Bump the version number to 5.1.4beta.

Note that this slightly changes how lzma_block_header_decode()
has been documented. Earlier it said that the .version is set
to the lowest required value, but now it says that the .version
field is kept unchanged if possible. In practice this doesn't
affect any old code, because before this commit the only
possible .version was 0.

COPYING.GPLv2

@@ -1,12 +1,12 @@
-		    GNU GENERAL PUBLIC LICENSE
-		       Version 2, June 1991
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
 
  Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
-			    Preamble
+                            Preamble
 
   The licenses for most software are designed to take away your
 freedom to share and change it.  By contrast, the GNU General Public
@@ -56,7 +56,7 @@ patent must be licensed for everyone's free use or not licensed at all.
   The precise terms and conditions for copying, distribution and
 modification follow.
 
-		    GNU GENERAL PUBLIC LICENSE
+                    GNU GENERAL PUBLIC LICENSE
    TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
 
   0. This License applies to any program or other work which contains
@@ -255,7 +255,7 @@ make exceptions for this.  Our decision will be guided by the two goals
 of preserving the free status of all derivatives of our free software and
 of promoting the sharing and reuse of software generally.
 
-			    NO WARRANTY
+                            NO WARRANTY
 
   11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
@@ -277,9 +277,9 @@ YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGES.
 
-		     END OF TERMS AND CONDITIONS
+                     END OF TERMS AND CONDITIONS
 
-	    How to Apply These Terms to Your New Programs
+            How to Apply These Terms to Your New Programs
 
   If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it

COPYING.LGPLv2.1

@@ -1,5 +1,5 @@
-		  GNU LESSER GENERAL PUBLIC LICENSE
-		       Version 2.1, February 1999
+                  GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 2.1, February 1999
 
  Copyright (C) 1991, 1999 Free Software Foundation, Inc.
  51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
@@ -10,7 +10,7 @@
  as the successor of the GNU Library Public License, version 2, hence
  the version number 2.1.]
 
-			    Preamble
+                            Preamble
 
   The licenses for most software are designed to take away your
 freedom to share and change it.  By contrast, the GNU General Public
@@ -112,7 +112,7 @@ modification follow.  Pay close attention to the difference between a
 former contains code derived from the library, whereas the latter must
 be combined with the library in order to run.
 
-		  GNU LESSER GENERAL PUBLIC LICENSE
+                  GNU LESSER GENERAL PUBLIC LICENSE
    TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
 
   0. This License Agreement applies to any software library or other
@@ -146,7 +146,7 @@ such a program is covered only if its contents constitute a work based
 on the Library (independent of the use of the Library in a tool for
 writing it).  Whether that is true depends on what the Library does
 and what the program that uses the Library does.
-  
+
   1. You may copy and distribute verbatim copies of the Library's
 complete source code as you receive it, in any medium, provided that
 you conspicuously and appropriately publish on each copy an
@@ -432,7 +432,7 @@ decision will be guided by the two goals of preserving the free status
 of all derivatives of our free software and of promoting the sharing
 and reuse of software generally.
 
-			    NO WARRANTY
+                            NO WARRANTY
 
   15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
 WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
@@ -455,7 +455,7 @@ FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
 SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
 DAMAGES.
 
-		     END OF TERMS AND CONDITIONS
+                     END OF TERMS AND CONDITIONS
 
            How to Apply These Terms to Your New Libraries
 
@@ -500,5 +500,3 @@ necessary.  Here is a sample; alter the names:
   Ty Coon, President of Vice
 
 That's all there is to it!
-
-

INSTALL

@@ -315,16 +315,42 @@ XZ Utils Installation
                 the amount of RAM on the operating system you use. See
                 src/common/tuklib_physmem.c for details.
 
-    --disable-threads
-                Disable threading support. This makes some things
-                thread-unsafe, meaning that if multithreaded application
-                calls liblzma functions from more than one thread,
-                something bad may happen.
+    --enable-threads=METHOD
+                Threading support is enabled by default so normally there
+                is no need to specify this option.
 
-                Use this option if threading support causes you trouble,
-                or if you know that you will use liblzma only from
-                single-threaded applications and want to avoid dependency
-                on libpthread.
+                Supported values for METHOD:
+
+                        yes     Autodetect the threading method. If none
+                                is found, configure will give an error.
+
+                        posix   Use POSIX pthreads. This is the default
+                                except on Windows outside Cygwin.
+
+                        win95   Use Windows 95 compatible threads. This
+                                is compatible with Windows XP and later
+                                too. This is the default for 32-bit x86
+                                Windows builds. The `win95' threading is
+                                incompatible with --enable-small.
+
+                        vista   Use Windows Vista compatible threads. The
+                                resulting binaries won't run on Windows XP
+                                or older. This is the default for Windows
+                                excluding 32-bit x86 builds (that is, on
+                                x86-64 the default is `vista').
+
+                        no      Disable threading support. This is the
+                                same as using --disable-threads.
+                                NOTE: If combined with --enable-small, the
+                                resulting liblzma won't be thread safe,
+                                that is, if a multi-threaded application
+                                calls any liblzma functions from more than
+                                one thread, something bad may happen.
+
+    --enable-symbol-versions
+                Use symbol versioning for liblzma. This is enabled by
+                default on GNU/Linux, other GNU-based systems, and
+                FreeBSD.
 
     --enable-debug
                 This enables the assert() macro and possibly some other

Makefile.am

@@ -98,6 +98,7 @@ dist-hook:
 
 # This works with GNU tar and gives cleaner package than normal 'make dist'.
 mydist:
+	sh "$(srcdir)/src/liblzma/validate_map.sh"
 	VERSION=$(VERSION); \
 	if test -d "$(srcdir)/.git" && type git > /dev/null 2>&1; then \
 		SNAPSHOT=`cd "$(srcdir)" && git describe --abbrev=4 | cut -b2-`; \

NEWS

@@ -2,15 +2,166 @@
 XZ Utils Release Notes
 ======================
 
-5.0.7 (2014-09-20)
+5.1.4beta (2014-09-14)
 
-    * Fix regressions introduced in 5.0.6:
+    * All fixes from 5.0.6
 
-        - Fix building with non-GNU make.
+    * liblzma: Fixed the use of presets in threaded encoder
+      initialization.
 
-        - Fix invalid Libs.private value in liblzma.pc which broke
-          static linking against liblzma if the linker flags were
-          taken from pkg-config.
+    * xz --block-list and --block-size can now be used together
+      in single-threaded mode. Previously the combination only
+      worked in multi-threaded mode.
+
+    * Added support for LZMA_IGNORE_CHECK to liblzma and made it
+      available in xz as --ignore-check.
+
+    * liblzma speed optimizations:
+
+        - Initialization of a new LZMA1 or LZMA2 encoder has been
+          optimized. (The speed of reinitializing an already-allocated
+          encoder isn't affected.) This helps when compressing many
+          small buffers with lzma_stream_buffer_encode() and other
+          similar situations where an already-allocated encoder state
+          isn't reused. This speed-up is visible in xz too if one
+          compresses many small files one at a time instead running xz
+          once and giving all files as command-line arguments.
+
+        - Buffer comparisons are now much faster when unaligned access
+          is allowed (configured with --enable-unaligned-access). This
+          speeds up encoding significantly. There is arch-specific code
+          for 32-bit and 64-bit x86 (32-bit needs SSE2 for the best
+          results and there's no run-time CPU detection for now).
+          For other archs there is only generic code which probably
+          isn't as optimal as arch-specific solutions could be.
+
+        - A few speed optimizations were made to the SHA-256 code.
+          (Note that the builtin SHA-256 code isn't used on all
+          operating systems.)
+
+    * liblzma can now be built with MSVC 2013 update 2 or later
+      using windows/config.h.
+
+    * Vietnamese translation was added.
+
+
+5.1.3alpha (2013-10-26)
+
+    * All fixes from 5.0.5
+
+    * liblzma:
+
+        - Fixed a deadlock in the threaded encoder.
+
+        - Made the uses of lzma_allocator const correct.
+
+        - Added lzma_block_uncomp_encode() to create uncompressed
+          .xz Blocks using LZMA2 uncompressed chunks.
+
+        - Added support for native threads on Windows and the ability
+          to detect the number of CPU cores.
+
+    * xz:
+
+        - Fixed a race condition in the signal handling. It was
+          possible that e.g. the first SIGINT didn't make xz exit
+          if reading or writing blocked and one had bad luck. The fix
+          is non-trivial, so as of writing it is unknown if it will be
+          backported to the v5.0 branch.
+
+        - Made the progress indicator work correctly in threaded mode.
+
+        - Threaded encoder now works together with --block-list=SIZES.
+
+        - Added preliminary support for --flush-timeout=TIMEOUT.
+          It can be useful for (somewhat) real-time streaming. For
+          now the decompression side has to be done with something
+          else than the xz tool due to how xz does buffering, but this
+          should be fixed.
+
+
+5.1.2alpha (2012-07-04)
+
+    * All fixes from 5.0.3 and 5.0.4
+
+    * liblzma:
+
+        - Fixed a deadlock and an invalid free() in the threaded encoder.
+
+        - Added support for symbol versioning. It is enabled by default
+          on GNU/Linux, other GNU-based systems, and FreeBSD.
+
+        - Use SHA-256 implementation from the operating system if one is
+          available in libc, libmd, or libutil. liblzma won't use e.g.
+          OpenSSL or libgcrypt to avoid introducing new dependencies.
+
+        - Fixed liblzma.pc for static linking.
+
+        - Fixed a few portability bugs.
+
+    * xz --decompress --single-stream now fixes the input position after
+      successful decompression. Now the following works:
+
+          echo foo | xz > foo.xz
+          echo bar | xz >> foo.xz
+          ( xz -dc --single-stream ; xz -dc --single-stream ) < foo.xz
+
+      Note that it doesn't work if the input is not seekable
+      or if there is Stream Padding between the concatenated
+      .xz Streams.
+
+    * xz -lvv now shows the minimum xz version that is required to
+      decompress the file. Currently it is 5.0.0 for all supported .xz
+      files except files with empty LZMA2 streams require 5.0.2.
+
+    * Added an *incomplete* implementation of --block-list=SIZES to xz.
+      It only works correctly in single-threaded mode and when
+      --block-size isn't used at the same time. --block-list allows
+      specifying the sizes of Blocks which can be useful e.g. when
+      creating files for random-access reading.
+
+
+5.1.1alpha (2011-04-12)
+
+    * All fixes from 5.0.2
+
+    * liblzma fixes that will also be included in 5.0.3:
+
+        - A memory leak was fixed.
+
+        - lzma_stream_buffer_encode() no longer creates an empty .xz
+          Block if encoding an empty buffer. Such an empty Block with
+          LZMA2 data would trigger a bug in 5.0.1 and older (see the
+          first bullet point in 5.0.2 notes). When releasing 5.0.2,
+          I thought that no encoder creates this kind of files but
+          I was wrong.
+
+        - Validate function arguments better in a few functions. Most
+          importantly, specifying an unsupported integrity check to
+          lzma_stream_buffer_encode() no longer creates a corrupt .xz
+          file. Probably no application tries to do that, so this
+          shouldn't be a big problem in practice.
+
+        - Document that lzma_block_buffer_encode(),
+          lzma_easy_buffer_encode(), lzma_stream_encoder(), and
+          lzma_stream_buffer_encode() may return LZMA_UNSUPPORTED_CHECK.
+
+        - The return values of the _memusage() functions are now
+          documented better.
+
+    * Support for multithreaded compression was added using the simplest
+      method, which splits the input data into blocks and compresses
+      them independently. Other methods will be added in the future.
+      The current method has room for improvement, e.g. it is possible
+      to reduce the memory usage.
+
+    * Added the options --single-stream and --block-size=SIZE to xz.
+
+    * xzdiff and xzgrep now support .lzo files if lzop is installed.
+      The .tzo suffix is also recognized as a shorthand for .tar.lzo.
+
+    * Support for short 8.3 filenames under DOS was added to xz. It is
+      experimental and may change before it gets into a stable release.
 
 
 5.0.6 (2014-09-14)

THANKS

@@ -30,17 +30,25 @@ has been important. :-) In alphabetical order:
   - Denis Excoffier
   - Michael Felt
   - Mike Frysinger
+  - Bill Glessner
   - Jason Gorski
   - Juan Manuel Guerrero
+  - Diederik de Haas
   - Joachim Henke
+  - Christian Hesse
+  - Vincenzo Innocente
   - Peter Ivanov
   - Jouk Jansen
+  - Jun I Jin
   - Per Øyvind Karlsen
   - Thomas Klausner
   - Richard Koch
   - Ville Koskinen
+  - Jan Kratochvil
+  - Christian Kujau
   - Stephan Kulow
   - Peter Lawler
+  - James M Leddy
   - Hin-Tak Leung
   - Andraž 'ruskie' Levstik
   - Cary Lewis
@@ -49,6 +57,7 @@ has been important. :-) In alphabetical order:
   - Bela Lubkin
   - Gregory Margo
   - Jim Meyering
+  - Arkadiusz Miskiewicz
   - Conley Moorhous
   - Rafał Mużyło
   - Adrien Nader
@@ -61,6 +70,7 @@ has been important. :-) In alphabetical order:
   - Diego Elio Pettenò
   - Elbert Pol
   - Mikko Pouru
+  - Trần Ngọc Quân
   - Pavel Raiskup
   - Robert Readman
   - Bernhard Reutner-Fischer
@@ -75,6 +85,7 @@ has been important. :-) In alphabetical order:
   - Stuart Shelton
   - Jonathan Stott
   - Dan Stromberg
+  - Vincent Torri
   - Paul Townsend
   - Mohammed Adnène Trojette
   - Alexey Tourbin

TODO

@@ -28,14 +28,36 @@ Known bugs
     time and calculated (de)compression speed won't make sense in the
     progress indicator (xz --verbose).
 
+    If liblzma has created threads and fork() gets called, liblzma
+    code will break in the child process unless it calls exec() and
+    doesn't touch liblzma.
+
 
 Missing features
 ----------------
 
+    Add support for storing metadata in .xz files. A preliminary
+    idea is to create a new Stream type for metadata. When both
+    metadata and data are wanted in the same .xz file, two or more
+    Streams would be concatenated.
+
+    The state stored in lzma_stream should be cloneable, which would
+    be mostly useful when using a preset dictionary in LZMA2, but
+    it may have other uses too. Compare to deflateCopy() in zlib.
+
+    Support LZMA_FINISH in raw decoder to indicate end of LZMA1 and
+    other streams that don't have an end of payload marker.
+
+    Adjust dictionary size when the input file size is known.
+    Maybe do this only if an option is given.
+
     xz doesn't support copying extended attributes, access control
     lists etc. from source to target file.
 
-    Multithreaded compression
+    Multithreaded compression:
+      - Reduce memory usage of the current method.
+      - Implement threaded match finders.
+      - Implement pigz-style threading in LZMA2.
 
     Multithreaded decompression
 
@@ -46,18 +68,44 @@ Missing features
     It will be a separate library that supports uncompressed, .gz,
     .bz2, .lzma, and .xz files.
 
+    Support changing lzma_options_lzma.mode with lzma_filters_update().
+
+    Support LZMA_FULL_FLUSH for lzma_stream_decoder() to stop at
+    Block and Stream boundaries.
+
     lzma_strerror() to convert lzma_ret to human readable form?
     This is tricky, because the same error codes are used with
     slightly different meanings, and this cannot be fixed anymore.
 
+    Make it possible to adjust LZMA2 options in the middle of a Block
+    so that the encoding speed vs. compression ratio can be optimized
+    when the compressed data is streamed over network.
+
+    Improved BCJ filters. The current filters are small but they aren't
+    so great when compressing binary packages that contain various file
+    types. Specifically, they make things worse if there are static
+    libraries or Linux kernel modules. The filtering could also be
+    more effective (without getting overly complex), for example,
+    streamable variant BCJ2 from 7-Zip could be implemented.
+
+    Filter that autodetects specific data types in the input stream
+    and applies appropriate filters for the corrects parts of the input.
+    Perhaps combine this with the BCJ filter improvement point above.
+
+    Long-range LZ77 method as a separate filter or as a new LZMA2
+    match finder.
+
 
 Documentation
 -------------
 
-    Some tutorial is needed for liblzma. I have planned to write some
-    extremely well commented example programs, which would work as
-    a tutorial. I suppose the Doxygen tags are quite OK as a quick
-    reference once one is familiar with the liblzma API.
+    More tutorial programs are needed for liblzma.
 
     Document the LZMA1 and LZMA2 algorithms.
 
+
+Miscellaneous
+------------
+
+    Try to get the media type for .xz registered at IANA.
+

configure.ac

@@ -328,15 +328,48 @@ AM_CONDITIONAL(COND_SMALL, test "x$enable_small" = xyes)
 #############
 
 AC_MSG_CHECKING([if threading support is wanted])
-AC_ARG_ENABLE([threads], AC_HELP_STRING([--disable-threads],
-		[Disable threading support.
-		This makes some things thread-unsafe.]),
+AC_ARG_ENABLE([threads], AC_HELP_STRING([--enable-threads=METHOD],
+		[Supported METHODS are `yes', `no', `posix', `win95', and
+		`vista'. The default is `yes'. Using `no' together with
+		--enable-small makes liblzma thread unsafe.]),
 	[], [enable_threads=yes])
-if test "x$enable_threads" != xyes && test "x$enable_threads" != xno; then
-	AC_MSG_RESULT([])
-	AC_MSG_ERROR([--enable-threads accepts only \`yes' or \`no'])
+
+if test "x$enable_threads" = xyes; then
+	case $host_os in
+		mingw*)
+			case $host_cpu in
+				i?86)   enable_threads=win95 ;;
+				*)      enable_threads=vista ;;
+			esac
+			;;
+		*)
+			enable_threads=posix
+			;;
+	esac
 fi
-AC_MSG_RESULT([$enable_threads])
+
+case $enable_threads in
+	posix | win95 | vista)
+		AC_MSG_RESULT([yes, $enable_threads])
+		;;
+	no)
+		AC_MSG_RESULT([no])
+		;;
+	*)
+		AC_MSG_RESULT([])
+		AC_MSG_ERROR([--enable-threads only accepts
+			\`yes', \`no', \`posix', \`win95', or \`vista'])
+		;;
+esac
+
+# The Win95 threading lacks thread-safe one-time initialization function.
+# It's better to disallow it instead of allowing threaded but thread-unsafe
+# build.
+if test "x$enable_small$enable_threads" = xyeswin95; then
+	AC_MSG_ERROR([--enable-threads=win95 and --enable-small cannot be
+		used at the same time])
+fi
+
 # We use the actual result a little later.
 
 
@@ -409,6 +442,33 @@ AC_ARG_ENABLE([doc], [AC_HELP_STRING([--disable-doc],
 AM_CONDITIONAL([COND_DOC], [test x$enable_doc != xno])
 
 
+#####################
+# Symbol versioning #
+#####################
+
+AC_MSG_CHECKING([if library symbol versioning should be used])
+AC_ARG_ENABLE([symbol-versions], [AC_HELP_STRING([--enable-symbol-versions],
+		[Use symbol versioning for liblzma. Enabled by default on
+		GNU/Linux, other GNU-based systems, and FreeBSD.])],
+	[], [enable_symbol_versions=auto])
+if test "x$enable_symbol_versions" = xauto; then
+	case $host_os in
+		# NOTE: Even if one omits -gnu on GNU/Linux (e.g.
+		# i486-slackware-linux), configure will (via config.sub)
+		# append -gnu (e.g. i486-slackware-linux-gnu), and this
+		# test will work correctly.
+		gnu* | *-gnu* | freebsd*)
+			enable_symbol_versions=yes
+			;;
+		*)
+			enable_symbol_versions=no
+			;;
+	esac
+fi
+AC_MSG_RESULT([$enable_symbol_versions])
+AM_CONDITIONAL([COND_SYMVERS], [test "x$enable_symbol_versions" = xyes])
+
+
 ###############################################################################
 # Checks for programs.
 ###############################################################################
@@ -434,18 +494,49 @@ AM_PROG_CC_C_O
 AM_PROG_AS
 AC_USE_SYSTEM_EXTENSIONS
 
-if test "x$enable_threads" = xyes; then
-	echo
-	echo "Threading support:"
-	AX_PTHREAD
-	LIBS="$LIBS $PTHREAD_LIBS"
-	AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS"
+case $enable_threads in
+	posix)
+		echo
+		echo "POSIX threading support:"
+		AX_PTHREAD([:]) dnl We don't need the HAVE_PTHREAD macro.
+		LIBS="$LIBS $PTHREAD_LIBS"
+		AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS"
 
-	dnl NOTE: PTHREAD_CC is ignored. It would be useful on AIX, but
-	dnl it's tricky to get it right together with AC_PROG_CC_C99.
-	dnl Thus, this is handled by telling the user in INSTALL to set
-	dnl the correct CC manually.
-fi
+		dnl NOTE: PTHREAD_CC is ignored. It would be useful on AIX,
+		dnl but it's tricky to get it right together with
+		dnl AC_PROG_CC_C99. Thus, this is handled by telling the
+		dnl user in INSTALL to set the correct CC manually.
+
+		AC_DEFINE([MYTHREAD_POSIX], [1],
+			[Define to 1 when using POSIX threads (pthreads).])
+
+		# These are nice to have but not mandatory.
+		#
+		# FIXME: xz uses clock_gettime if it is available and can do
+		# it even when threading is disabled. Moving this outside
+		# of pthread detection may be undesirable because then
+		# liblzma may get linked against librt even when librt isn't
+		# needed by liblzma.
+		OLD_CFLAGS=$CFLAGS
+		CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+		AC_SEARCH_LIBS([clock_gettime], [rt])
+		AC_CHECK_FUNCS([clock_gettime pthread_condattr_setclock])
+		AC_CHECK_DECLS([CLOCK_MONOTONIC], [], [], [[#include <time.h>]])
+		CFLAGS=$OLD_CFLAGS
+		;;
+	win95)
+		AC_DEFINE([MYTHREAD_WIN95], [1], [Define to 1 when using
+			Windows 95 (and thus XP) compatible threads.
+			This avoids use of features that were added in
+			Windows Vista.])
+		;;
+	vista)
+		AC_DEFINE([MYTHREAD_VISTA], [1], [Define to 1 when using
+			Windows Vista compatible threads. This uses
+			features that are not available on Windows XP.])
+		;;
+esac
+AM_CONDITIONAL([COND_THREADS], [test "x$enable_threads" != xno])
 
 echo
 echo "Initializing Libtool:"
@@ -469,6 +560,7 @@ echo "Initializing gettext:"
 AM_GNU_GETTEXT_VERSION([0.18])
 AM_GNU_GETTEXT([external])
 
+
 ###############################################################################
 # Checks for header files.
 ###############################################################################
@@ -482,6 +574,9 @@ AC_CHECK_HEADERS([fcntl.h limits.h sys/time.h],
 	[],
 	[AC_MSG_ERROR([Required header file(s) are missing.])])
 
+# This allows the use of the intrinsic functions if they are available.
+AC_CHECK_HEADERS([immintrin.h])
+
 
 ###############################################################################
 # Checks for typedefs, structures, and compiler characteristics.
@@ -527,12 +622,78 @@ gl_GETOPT
 # Find the best function to set timestamps.
 AC_CHECK_FUNCS([futimens futimes futimesat utimes utime], [break])
 
+# This is nice to have but not mandatory.
+AC_CHECK_FUNCS([posix_fadvise])
+
 TUKLIB_PROGNAME
 TUKLIB_INTEGER
 TUKLIB_PHYSMEM
 TUKLIB_CPUCORES
 TUKLIB_MBSTR
 
+# Check for system-provided SHA-256. At least the following is supported:
+#
+# OS       Headers                     Library  Type           Function
+# FreeBSD  sys/types.h + sha256.h      libmd    SHA256_CTX     SHA256_Init
+# NetBSD   sys/types.h + sha2.h                 SHA256_CTX     SHA256_Init
+# OpenBSD  sys/types.h + sha2.h                 SHA2_CTX       SHA256Init
+# Solaris  sys/types.h + sha2.h        libmd    SHA256_CTX     SHA256Init
+# MINIX 3  sys/types.h + minix/sha2.h  libutil  SHA256_CTX     SHA256_Init
+# Darwin   CommonCrypto/CommonDigest.h          CC_SHA256_CTX  CC_SHA256_Init
+#
+# Note that Darwin's CC_SHA256_Update takes buffer size as uint32_t instead
+# of size_t.
+#
+# We don't check for e.g. OpenSSL or libgcrypt because we don't want
+# to introduce dependencies to other packages by default. Maybe such
+# libraries could be supported via additional configure options though.
+#
+if test "x$enable_check_sha256" = "xyes"; then
+	# Test for Common Crypto before others, because Darwin has sha256.h
+	# too and we don't want to use that, because on older versions it
+	# uses OpenSSL functions, whose SHA256_Init is not guaranteed to
+	# succeed.
+	sha256_header_found=no
+	AC_CHECK_HEADERS(
+		[CommonCrypto/CommonDigest.h sha256.h sha2.h minix/sha2.h],
+		[sha256_header_found=yes ; break])
+	if test "x$sha256_header_found" = xyes; then
+		AC_CHECK_TYPES([CC_SHA256_CTX, SHA256_CTX, SHA2_CTX], [], [],
+			[[#ifdef HAVE_SYS_TYPES_H
+			  # include <sys/types.h>
+			  #endif
+			  #ifdef HAVE_COMMONCRYPTO_COMMONDIGEST_H
+			  # include <CommonCrypto/CommonDigest.h>
+			  #endif
+			  #ifdef HAVE_SHA256_H
+			  # include <sha256.h>
+			  #endif
+			  #ifdef HAVE_SHA2_H
+			  # include <sha2.h>
+			  #endif
+			  #ifdef HAVE_MINIX_SHA2_H
+			  # include <minix/sha2.h>
+			  #endif]])
+		AC_SEARCH_LIBS([SHA256_Init], [md util])
+		AC_SEARCH_LIBS([SHA256Init], [md])
+		AC_CHECK_FUNCS([CC_SHA256_Init SHA256_Init SHA256Init],
+			[break])
+	fi
+fi
+AM_CONDITIONAL([COND_INTERNAL_SHA256],
+	[test "x$ac_cv_func_SHA256_Init" != xyes \
+		&& test "x$ac_cv_func_SHA256Init" != xyes \
+		&& test "x$ac_cv_func_CC_SHA256_Init" != xyes])
+
+# Check for SSE2 intrinsics.
+AC_CHECK_DECL([_mm_movemask_epi8],
+	[AC_DEFINE([HAVE__MM_MOVEMASK_EPI8], [1],
+		[Define to 1 if _mm_movemask_epi8 is available.])],
+	[],
+[#ifdef HAVE_IMMINTRIN_H
+#include <immintrin.h>
+#endif])
+
 
 ###############################################################################
 # If using GCC, set some additional AM_CFLAGS:
@@ -656,9 +817,15 @@ if test x$tuklib_cv_physmem_method = xunknown; then
 	echo "or make a patch to add support for this operating system."
 fi
 
-# Not threading yet so don't warn.
-#if test x$tuklib_cv_cpucores_method = xunknown; then
-#	echo
-#	echo "WARNING:"
-#	echo "No supported method to detect the number of CPU cores."
-#fi
+if test x$tuklib_cv_cpucores_method = xunknown; then
+	echo
+	echo "WARNING:"
+	echo "No supported method to detect the number of CPU cores."
+fi
+
+if test "x$enable_threads$enable_small" = xnoyes; then
+	echo
+	echo "NOTE:"
+	echo "liblzma will be thread unsafe due the combination"
+	echo "of --disable-threads --enable-small."
+fi

doc/examples/03_compress_custom.c

@@ -28,8 +28,8 @@ init_encoder(lzma_stream *strm)
 	// Use the default preset (6) for LZMA2.
 	//
 	// The lzma_options_lzma structure and the lzma_lzma_preset() function
-	// are declared in lzma/lzma.h (src/liblzma/api/lzma/lzma.h in the
-	// source package or e.g. /usr/include/lzma/lzma.h depending on
+	// are declared in lzma/lzma12.h (src/liblzma/api/lzma/lzma12.h in the
+	// source package or e.g. /usr/include/lzma/lzma12.h depending on
 	// the install prefix).
 	lzma_options_lzma opt_lzma2;
 	if (lzma_lzma_preset(&opt_lzma2, LZMA_PRESET_DEFAULT)) {
@@ -48,7 +48,7 @@ init_encoder(lzma_stream *strm)
 	// Now we could customize the LZMA2 options if we wanted. For example,
 	// we could set the the dictionary size (opt_lzma2.dict_size) to
 	// something else than the default (8 MiB) of the default preset.
-	// See lzma/lzma.h for details of all LZMA2 options.
+	// See lzma/lzma12.h for details of all LZMA2 options.
 	//
 	// The x86 BCJ filter will try to modify the x86 instruction stream so
 	// that LZMA2 can compress it better. The x86 BCJ filter doesn't need

doc/examples/04_compress_easy_mt.c

@@ -0,0 +1,184 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       04_compress_easy_mt.c
+/// \brief      Compress in multi-call mode using LZMA2 in multi-threaded mode
+///
+/// Usage:      ./04_compress_easy_mt < INFILE > OUTFILE
+///
+/// Example:    ./04_compress_easy_mt < foo > foo.xz
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include <stdbool.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <lzma.h>
+
+
+static bool
+init_encoder(lzma_stream *strm)
+{
+	// The threaded encoder takes the options as pointer to
+	// a lzma_mt structure.
+	lzma_mt mt = {
+		// No flags are needed.
+		.flags = 0,
+
+		// Set the number of threads to use.
+		// FIXME: Add how to autodetect a reasonable number.
+		.threads = 4,
+
+		// Let liblzma determine a sane block size.
+		.block_size = 0,
+
+		// Use no timeout for lzma_code() calls by setting timeout
+		// to zero. That is, sometimes lzma_code() might block for
+		// a long time (from several seconds to even minutes).
+		// If this is not OK, for example due to progress indicator
+		// needing updates, specify a timeout in milliseconds here.
+		// See the documentation of lzma_mt in lzma/container.h for
+		// information how to choose a reasonable timeout.
+		.timeout = 0,
+
+		// Use the default preset (6) for LZMA2.
+		// To use a preset, filters must be set to NULL.
+		.preset = LZMA_PRESET_DEFAULT,
+		.filters = NULL,
+
+		// Use CRC64 for integrity checking. See also
+		// 01_compress_easy.c about choosing the integrity check.
+		.check = LZMA_CHECK_CRC64,
+	};
+
+	// Initialize the threaded encoder.
+	lzma_ret ret = lzma_stream_encoder_mt(strm, &mt);
+
+	if (ret == LZMA_OK)
+		return true;
+
+	const char *msg;
+	switch (ret) {
+	case LZMA_MEM_ERROR:
+		msg = "Memory allocation failed";
+		break;
+
+	case LZMA_OPTIONS_ERROR:
+		// We are no longer using a plain preset so this error
+		// message has been edited accordingly compared to
+		// 01_compress_easy.c.
+		msg = "Specified filter chain is not supported";
+		break;
+
+	case LZMA_UNSUPPORTED_CHECK:
+		msg = "Specified integrity check is not supported";
+		break;
+
+	default:
+		msg = "Unknown error, possibly a bug";
+		break;
+	}
+
+	fprintf(stderr, "Error initializing the encoder: %s (error code %u)\n",
+			msg, ret);
+	return false;
+}
+
+
+// This function is identical to the one in 01_compress_easy.c.
+static bool
+compress(lzma_stream *strm, FILE *infile, FILE *outfile)
+{
+	lzma_action action = LZMA_RUN;
+
+	uint8_t inbuf[BUFSIZ];
+	uint8_t outbuf[BUFSIZ];
+
+	strm->next_in = NULL;
+	strm->avail_in = 0;
+	strm->next_out = outbuf;
+	strm->avail_out = sizeof(outbuf);
+
+	while (true) {
+		if (strm->avail_in == 0 && !feof(infile)) {
+			strm->next_in = inbuf;
+			strm->avail_in = fread(inbuf, 1, sizeof(inbuf),
+					infile);
+
+			if (ferror(infile)) {
+				fprintf(stderr, "Read error: %s\n",
+						strerror(errno));
+				return false;
+			}
+
+			if (feof(infile))
+				action = LZMA_FINISH;
+		}
+
+		lzma_ret ret = lzma_code(strm, action);
+
+		if (strm->avail_out == 0 || ret == LZMA_STREAM_END) {
+			size_t write_size = sizeof(outbuf) - strm->avail_out;
+
+			if (fwrite(outbuf, 1, write_size, outfile)
+					!= write_size) {
+				fprintf(stderr, "Write error: %s\n",
+						strerror(errno));
+				return false;
+			}
+
+			strm->next_out = outbuf;
+			strm->avail_out = sizeof(outbuf);
+		}
+
+		if (ret != LZMA_OK) {
+			if (ret == LZMA_STREAM_END)
+				return true;
+
+			const char *msg;
+			switch (ret) {
+			case LZMA_MEM_ERROR:
+				msg = "Memory allocation failed";
+				break;
+
+			case LZMA_DATA_ERROR:
+				msg = "File size limits exceeded";
+				break;
+
+			default:
+				msg = "Unknown error, possibly a bug";
+				break;
+			}
+
+			fprintf(stderr, "Encoder error: %s (error code %u)\n",
+					msg, ret);
+			return false;
+		}
+	}
+}
+
+
+extern int
+main(void)
+{
+	lzma_stream strm = LZMA_STREAM_INIT;
+
+	bool success = init_encoder(&strm);
+	if (success)
+		success = compress(&strm, stdin, stdout);
+
+	lzma_end(&strm);
+
+	if (fclose(stdout)) {
+		fprintf(stderr, "Write error: %s\n", strerror(errno));
+		success = false;
+	}
+
+	return success ? EXIT_SUCCESS : EXIT_FAILURE;
+}

doc/examples/Makefile

@@ -12,7 +12,8 @@ LDFLAGS = -llzma
 PROGS = \
 	01_compress_easy \
 	02_decompress \
-	03_compress_custom
+	03_compress_custom \
+	04_compress_easy_mt
 
 all: $(PROGS)
 

dos/INSTALL.txt

@@ -1,6 +1,6 @@
 
-XZ Utils on DOS
-===============
+Building XZ Utils for DOS
+=========================
 
 Introduction
 
@@ -77,12 +77,3 @@ Building
     are not built. Having e.g. xzdec.exe doesn't save much space compared
     to xz.exe, because the DJGPP runtime makes the .exe quite big anyway.
 
-
-Bugs
-
-    xz doesn't necessarily work in Dosbox. It should work in DOSEMU.
-
-    Pressing Ctrl-c or Ctrl-Break won't remove the incomplete target file
-    when running under Windows XP Command Prompt (something goes wrong
-    with SIGINT handling). It works correctly under Windows 95/98/98SE/ME.
-

dos/README.txt

@@ -0,0 +1,123 @@
+
+XZ Utils on DOS
+===============
+
+DOS-specific filename handling
+
+    xz detects at runtime if long filename (LFN) support is
+    available and will use it by default. It can be disabled by
+    setting an environment variable:
+
+        set lfn=n
+
+    When xz is in LFN mode, it behaves pretty much the same as it
+    does on other operating systems. Examples:
+
+        xz foo.tar          -> foo.tar.xz
+        xz -d foo.tar.xz    -> foo.tar
+
+        xz -F lzma foo.tar  -> foo.tar.lzma
+        xz -d foo.tar.lzma  -> foo.tar
+
+    When LFN support isn't available or it is disabled with LFN=n
+    environment setting, xz works in short filename (SFN) mode. This
+    affects filename suffix handling when compressing.
+
+    When compressing to the .xz format in SFN mode:
+
+      - Files without an extension get .xz just like on LFN systems.
+
+      - *.tar files become *.txz (shorthand for *.tar.xz). *.txz
+        is recognized by xz on all supported operating systems.
+        (Try to avoid confusing this with gzipped .txt files.)
+
+      - Files with 1-3 character extension have their extension modified
+        so that the last character is a dash ("-"). If the extension
+        is already three characters, the last character is lost. The
+        resulting *.?- or *.??- filename is recognized in LFN mode, but
+        it isn't recognized by xz on other operating systems.
+
+    Examples:
+
+        xz foo              -> foo.xz     |   xz -d foo.xz    -> foo
+        xz foo.tar          -> foo.txz    |   xz -d foo.txz   -> foo.tar
+        xz foo.c            -> foo.c-     |   xz -d foo.c-    -> foo.c
+        xz read.me          -> read.me-   |   xz -d read.me-  -> read.me
+        xz foo.txt          -> foo.tx-    |   xz -d foo.tx-   -> foo.tx   !
+
+    Note that in the last example above, the third character of the
+    filename extension is lost.
+
+    When compressing to the legacy .lzma format in SFN mode:
+
+      - *.tar files become *.tlz (shorthand for *.tar.lzma). *.tlz
+        is recognized by xz on all supported operating systems.
+
+      - Other files become *.lzm. The original filename extension
+        is lost. *.lzm is recognized also in LFN mode, but it is not
+        recognized by xz on other operating systems.
+
+    Examples:
+
+        xz -F lzma foo      -> foo.lzm    |   xz -d foo.lzm   -> foo
+        xz -F lzma foo.tar  -> foo.tlz    |   xz -d foo.tlz   -> foo.tar
+        xz -F lzma foo.c    -> foo.lzm    |   xz -d foo.lzm   -> foo      !
+        xz -F lzma read.me  -> read.lzm   |   xz -d read.lzm  -> read     !
+        xz -F lzma foo.txt  -> foo.lzm    |   xz -d foo.lzm   -> foo      !
+
+    When compressing with a custom suffix (-S .SUF, --suffix=.SUF) to
+    any file format:
+
+      - If the suffix begins with a dot, the filename extension is
+        replaced with the new suffix. The original extension is lost.
+
+      - If the suffix doesn't begin with a dot and the filename has no
+        extension and the filename given on the command line doesn't
+        have a dot at the end, the custom suffix is appended just like
+        on LFN systems.
+
+      - If the suffix doesn't begin with a dot and the filename has
+        an extension (or an extension-less filename is given with a dot
+        at the end), the last 1-3 characters of the filename extension
+        may get overwritten to fit the given custom suffix.
+
+    Examples:
+
+        xz -S x foo        -> foox      |  xz -dS x foox      -> foo
+        xz -S x foo.       -> foo.x     |  xz -dS x foo.x     -> foo
+        xz -S .x foo       -> foo.x     |  xz -dS .x foo.x    -> foo
+        xz -S .x foo.      -> foo.x     |  xz -dS .x foo.x    -> foo
+        xz -S x.y foo      -> foox.y    |  xz -dS x.y foox.y  -> foo
+        xz -S .a foo.c     -> foo.a     |  xz -dS .a foo.a    -> foo      !
+        xz -S a  foo.c     -> foo.ca    |  xz -dS a foo.ca    -> foo.c
+        xz -S ab foo.c     -> foo.cab   |  xz -dS ab foo.cab  -> foo.c
+        xz -S ab read.me   -> read.mab  |  xz -dS ab read.mab -> read.m   !
+        xz -S ab foo.txt   -> foo.tab   |  xz -dS ab foo.tab  -> foo.t    !
+        xz -S abc foo.txt  -> foo.abc   |  xz -dS abc foo.abc -> foo      !
+
+    When decompressing, the suffix handling in SFN mode is the same as
+    in LFN mode. The DOS-specific filenames *.lzm, *.?-, and *.??- are
+    recognized also in LFN mode.
+
+    xz handles certain uncommon situations safely:
+
+      - If the generated output filename refers to the same file as
+        the input file, xz detects this and refuses to compress or
+        decompress the input file even if --force is used. This can
+        happen when giving an overlong filename in SFN mode. E.g.
+        "xz -S x foo.texinfo" would try to write to foo.tex which on
+        SFN system is the same file as foo.texinfo.
+
+      - If the generated output filename is a special file like "con"
+        or "prn", xz detects this and refuses to compress or decompress
+        the input file even if --force is used.
+
+
+Bugs
+
+    xz doesn't necessarily work in Dosbox. It should work in DOSEMU.
+
+    Pressing Ctrl-c or Ctrl-Break won't remove the incomplete target file
+    when running under Windows XP Command Prompt (something goes wrong
+    with SIGINT handling). It works correctly under Windows 95/98/98SE/ME.
+

m4/tuklib_cpucores.m4

@@ -9,8 +9,10 @@
 #   This information is used by tuklib_cpucores.c.
 #
 #   Supported methods:
+#     - GetSystemInfo(): Windows (including Cygwin)
 #     - sysctl(): BSDs, OS/2
-#     - sysconf(): GNU/Linux, Solaris, Tru64, IRIX, AIX, Cygwin
+#     - sysconf(): GNU/Linux, Solaris, Tru64, IRIX, AIX, Cygwin (but
+#       GetSystemInfo() is used on Cygwin)
 #     - pstat_getdynamic(): HP-UX
 #
 # COPYING
@@ -30,6 +32,19 @@ AC_CHECK_HEADERS([sys/param.h])
 AC_CACHE_CHECK([how to detect the number of available CPU cores],
 	[tuklib_cv_cpucores_method], [
 
+# Maybe checking $host_os would be enough but this matches what
+# tuklib_cpucores.c does.
+#
+# NOTE: IRIX has a compiler that doesn't error out with #error, so use
+# a non-compilable text instead of #error to generate an error.
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+#if defined(_WIN32) || defined(__CYGWIN__)
+int main(void) { return 0; }
+#else
+compile error
+#endif
+]])], [tuklib_cv_cpucores_method=special], [
+
 # Look for sysctl() solution first, because on OS/2, both sysconf()
 # and sysctl() pass the tests in this file, but only sysctl()
 # actually works.
@@ -82,7 +97,7 @@ main(void)
 ]])], [tuklib_cv_cpucores_method=pstat_getdynamic], [
 
 	tuklib_cv_cpucores_method=unknown
-])])])])
+])])])])])
 
 case $tuklib_cv_cpucores_method in
 	sysctl)

po/LINGUAS

@@ -3,3 +3,4 @@ de
 fr
 it
 pl
+vi

po/de.po

@@ -6,7 +6,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: XZ Utils 4.999.9beta\n"
 "Report-Msgid-Bugs-To: lasse.collin@tukaani.org\n"
-"POT-Creation-Date: 2012-05-29 17:20+0200\n"
+"POT-Creation-Date: 2012-05-29 21:55+0200\n"
 "PO-Revision-Date: 2010-09-07 20:27+0200\n"
 "Last-Translator:  <maan@systemlinux.org>\n"
 "Language-Team: German\n"
@@ -15,63 +15,75 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 
-#: src/xz/args.c:333
+#: src/xz/args.c:338
 #, c-format
 msgid "%s: Unknown file format type"
 msgstr "%s: Unbekanntes file format"
 
-#: src/xz/args.c:356 src/xz/args.c:364
+#: src/xz/args.c:361 src/xz/args.c:369
 #, c-format
 msgid "%s: Unsupported integrity check type"
 msgstr "%s: Integritäts-Check Typ nicht unterstützt"
 
-#: src/xz/args.c:382
+#: src/xz/args.c:396
 msgid "Only one file can be specified with `--files' or `--files0'."
 msgstr ""
 "Nur ein file kann als Argument für --files oder --files0 angegeben werden."
 
-#: src/xz/args.c:445
+#: src/xz/args.c:459
 #, c-format
 msgid "The environment variable %s contains too many arguments"
 msgstr "Die Umgebungsvariable %s enthält zu viele Argumente"
 
-#: src/xz/coder.c:95
+#: src/xz/coder.c:105
 msgid "Maximum number of filters is four"
 msgstr "Maximal vier Filter möglich"
 
-#: src/xz/coder.c:108
+#: src/xz/coder.c:118
 msgid "Memory usage limit is too low for the given filter setup."
 msgstr ""
 "Das Speicher Limit ist zu niedrig für die gegebene Filter Konfiguration."
 
-#: src/xz/coder.c:129
+#: src/xz/coder.c:148
 msgid "Using a preset in raw mode is discouraged."
 msgstr "Verwendung der Voreinstellung im raw Modus wird nicht empfohlen."
 
-#: src/xz/coder.c:131
+#: src/xz/coder.c:150
 msgid "The exact options of the presets may vary between software versions."
 msgstr ""
 "Die genauen Optionen der Voreinstellung können zwischen Software Versionen "
 "variieren."
 
-#: src/xz/coder.c:157
+#: src/xz/coder.c:176
 msgid "The .lzma format supports only the LZMA1 filter"
 msgstr "Das .lzma Format unterstützt nur den LZMA1 Filter"
 
-#: src/xz/coder.c:165
+#: src/xz/coder.c:184
 msgid "LZMA1 cannot be used with the .xz format"
 msgstr "LZMA1 kann nicht mit dem .xz Format verwendet werden"
 
-#: src/xz/coder.c:182
+#: src/xz/coder.c:203
+msgid "Using up to %<PRIu32> threads."
+msgstr "Benutze bis zu %<PRIu32> Threads."
+
+#: src/xz/coder.c:216
 msgid "Unsupported filter chain or filter options"
 msgstr "Optionen nicht unterstützt"
 
-#: src/xz/coder.c:190
+#: src/xz/coder.c:224
 #, c-format
 msgid "Decompression will need %s MiB of memory."
 msgstr "Dekompression wird %s MiB Speicher brauchen."
 
-#: src/xz/coder.c:247
+#: src/xz/coder.c:259
+msgid ""
+"Adjusted the number of threads from %s to %s to not exceed the memory usage "
+"limit of %s MiB"
+msgstr ""
+"Passte die Anzahl Threads von %s auf %s an um nicht das Speicher "
+"Nutzungslimit von %s MiB zu übersteigen"
+
+#: src/xz/coder.c:313
 #, c-format
 msgid ""
 "Adjusted LZMA%c dictionary size from %s MiB to %s MiB to not exceed the "
@@ -90,121 +102,121 @@ msgstr ""
 #. it is possible that the user has put a new file in place
 #. of the original file, and in that case it obviously
 #. shouldn't be removed.
-#: src/xz/file_io.c:137
+#: src/xz/file_io.c:136
 #, c-format
 msgid "%s: File seems to have been moved, not removing"
 msgstr ""
 "%s: Datei scheint umbenannt worden zu sein, daher wird sie nicht gelöscht"
 
-#: src/xz/file_io.c:144 src/xz/file_io.c:589
+#: src/xz/file_io.c:143 src/xz/file_io.c:635
 #, c-format
 msgid "%s: Cannot remove: %s"
 msgstr "%s: Kann nicht löschen: %s"
 
-#: src/xz/file_io.c:169
+#: src/xz/file_io.c:168
 #, c-format
 msgid "%s: Cannot set the file owner: %s"
 msgstr "%s: Kann Datei Eigentümer nicht setzen: %s"
 
-#: src/xz/file_io.c:175
+#: src/xz/file_io.c:174
 #, c-format
 msgid "%s: Cannot set the file group: %s"
 msgstr "%s: Kann Datei Gruppe nicht setzen: %s"
 
-#: src/xz/file_io.c:194
+#: src/xz/file_io.c:193
 #, c-format
 msgid "%s: Cannot set the file permissions: %s"
 msgstr "%s: Kann Zugriffsrechte nicht setzen: %s"
 
-#: src/xz/file_io.c:337 src/xz/file_io.c:420
+#: src/xz/file_io.c:340 src/xz/file_io.c:423
 #, c-format
 msgid "%s: Is a symbolic link, skipping"
 msgstr "%s: Überspringe symbolischen Verweis"
 
-#: src/xz/file_io.c:455
+#: src/xz/file_io.c:468
 #, c-format
 msgid "%s: Is a directory, skipping"
 msgstr "%s: Überspringe Verzeichnis"
 
-#: src/xz/file_io.c:461
+#: src/xz/file_io.c:474
 #, c-format
 msgid "%s: Not a regular file, skipping"
 msgstr "%s: Keine reguläre Datei, überspringe"
 
-#: src/xz/file_io.c:478
+#: src/xz/file_io.c:491
 #, c-format
 msgid "%s: File has setuid or setgid bit set, skipping"
 msgstr "%s: Datei hat das setuid oder setgid Bit gesetzt, überspringe"
 
-#: src/xz/file_io.c:485
+#: src/xz/file_io.c:498
 #, c-format
 msgid "%s: File has sticky bit set, skipping"
 msgstr "%s: Datei hat sticky Bit gesetzt, überspringe"
 
-#: src/xz/file_io.c:492
+#: src/xz/file_io.c:505
 #, c-format
 msgid "%s: Input file has more than one hard link, skipping"
 msgstr "%s: Eingabedatei hat mehr als einen hard link, überspringe"
 
-#: src/xz/file_io.c:713
+#: src/xz/file_io.c:761
 #, c-format
 msgid "Error restoring the O_APPEND flag to standard output: %s"
 msgstr ""
 "Fehler beim Wiederherstellen des O_APPEND flags bei Standard Output: %s"
 
-#: src/xz/file_io.c:725
+#: src/xz/file_io.c:773
 #, c-format
 msgid "%s: Closing the file failed: %s"
 msgstr "%s: Fehler beim Schießen der Datei: %s"
 
-#: src/xz/file_io.c:761 src/xz/file_io.c:945
+#: src/xz/file_io.c:809 src/xz/file_io.c:1008
 #, c-format
 msgid "%s: Seeking failed when trying to create a sparse file: %s"
 msgstr ""
 "%s: Positionierungsfehler beim Versuch eine sparse Datei zu erzeugen: %s"
 
-#: src/xz/file_io.c:820
+#: src/xz/file_io.c:883
 #, c-format
 msgid "%s: Read error: %s"
 msgstr "%s: Lesefehler: %s"
 
-#: src/xz/file_io.c:843
+#: src/xz/file_io.c:906
 #, c-format
 msgid "%s: Error seeking the file: %s"
 msgstr "%s: Fehler beim Lesen der Dateinamen: %s"
 
-#: src/xz/file_io.c:853
+#: src/xz/file_io.c:916
 #, c-format
 msgid "%s: Unexpected end of file"
 msgstr "%s: Unerwartetes Ende der Datei"
 
-#: src/xz/file_io.c:903
+#: src/xz/file_io.c:966
 #, c-format
 msgid "%s: Write error: %s"
 msgstr "%s: Schreibfehler: %s"
 
-#: src/xz/hardware.c:100
+#: src/xz/hardware.c:101
 msgid "Disabled"
 msgstr "Deaktiviert"
 
 #. TRANSLATORS: Test with "xz --info-memory" to see if
 #. the alignment looks nice.
-#: src/xz/hardware.c:119
+#: src/xz/hardware.c:120
 msgid "Total amount of physical memory (RAM): "
 msgstr "Gesamtmenge physikalischer Speicher (RAM): "
 
-#: src/xz/hardware.c:121
+#: src/xz/hardware.c:122
 msgid "Memory usage limit for compression:    "
 msgstr "Speicher Nutzungslimit für Kompression:    "
 
-#: src/xz/hardware.c:123
+#: src/xz/hardware.c:124
 msgid "Memory usage limit for decompression:  "
 msgstr "Speicher Nutzungslimit für Dekompression:  "
 
 #. TRANSLATORS: Indicates that there is no integrity check.
 #. This string is used in tables, so the width must not
 #. exceed ten columns with a fixed-width font.
-#: src/xz/list.c:62
+#: src/xz/list.c:65
 msgid "None"
 msgstr "Kein"
 
@@ -213,60 +225,60 @@ msgstr "Kein"
 #. strings are used in tables, so the width must not exceed ten
 #. columns with a fixed-width font. It's OK to omit the dash if
 #. you need space for one extra letter, but don't use spaces.
-#: src/xz/list.c:69
+#: src/xz/list.c:72
 msgid "Unknown-2"
 msgstr "Unbek.2"
 
-#: src/xz/list.c:70
+#: src/xz/list.c:73
 msgid "Unknown-3"
 msgstr "Unbek.3"
 
-#: src/xz/list.c:72
+#: src/xz/list.c:75
 msgid "Unknown-5"
 msgstr "Unbek.5"
 
-#: src/xz/list.c:73
+#: src/xz/list.c:76
 msgid "Unknown-6"
 msgstr "Unbek.6"
 
-#: src/xz/list.c:74
+#: src/xz/list.c:77
 msgid "Unknown-7"
 msgstr "Unbek.7"
 
-#: src/xz/list.c:75
+#: src/xz/list.c:78
 msgid "Unknown-8"
 msgstr "Unbek.8"
 
-#: src/xz/list.c:76
+#: src/xz/list.c:79
 msgid "Unknown-9"
 msgstr "Unbek.9"
 
-#: src/xz/list.c:78
+#: src/xz/list.c:81
 msgid "Unknown-11"
 msgstr "Unbek.11"
 
-#: src/xz/list.c:79
+#: src/xz/list.c:82
 msgid "Unknown-12"
 msgstr "Unbek.12"
 
-#: src/xz/list.c:80
+#: src/xz/list.c:83
 msgid "Unknown-13"
 msgstr "Unbek.13"
 
-#: src/xz/list.c:81
+#: src/xz/list.c:84
 msgid "Unknown-14"
 msgstr "Unbek.14"
 
-#: src/xz/list.c:82
+#: src/xz/list.c:85
 msgid "Unknown-15"
 msgstr "Unbek.15"
 
-#: src/xz/list.c:126
+#: src/xz/list.c:153
 #, c-format
 msgid "%s: File is empty"
 msgstr "%s: Datei ist leer"
 
-#: src/xz/list.c:131
+#: src/xz/list.c:158
 #, c-format
 msgid "%s: Too small to be a valid .xz file"
 msgstr "%s: Zu klein um ein gültiges .xz file zu sein"
@@ -275,41 +287,41 @@ msgstr "%s: Zu klein um ein gültiges .xz file zu sein"
 #. to Ratio, the columns are right aligned. Check and Filename
 #. are left aligned. If you need longer words, it's OK to
 #. use two lines here. Test with "xz -l foo.xz".
-#: src/xz/list.c:603
+#: src/xz/list.c:645
 msgid "Strms  Blocks   Compressed Uncompressed  Ratio  Check   Filename"
 msgstr " Str.  Blöcke       Kompr.     Unkompr.  Verh.  Check   Dateiname"
 
-#: src/xz/list.c:643
+#: src/xz/list.c:685
 #, c-format
 msgid "  Streams:            %s\n"
 msgstr "  Ströme:              %s\n"
 
-#: src/xz/list.c:645
+#: src/xz/list.c:687
 #, c-format
 msgid "  Blocks:             %s\n"
 msgstr "  Blöcke:              %s\n"
 
-#: src/xz/list.c:647
+#: src/xz/list.c:689
 #, c-format
 msgid "  Compressed size:    %s\n"
 msgstr "  Größe komprimiert:   %s\n"
 
-#: src/xz/list.c:650
+#: src/xz/list.c:692
 #, c-format
 msgid "  Uncompressed size:  %s\n"
 msgstr "  Größe unkomprimiert: %s\n"
 
-#: src/xz/list.c:653
+#: src/xz/list.c:695
 #, c-format
 msgid "  Ratio:              %s\n"
 msgstr "  Verhältnis:          %s\n"
 
-#: src/xz/list.c:655
+#: src/xz/list.c:697
 #, c-format
 msgid "  Check:              %s\n"
 msgstr "  Check:               %s\n"
 
-#: src/xz/list.c:656
+#: src/xz/list.c:698
 #, c-format
 msgid "  Stream padding:     %s\n"
 msgstr "  Strom Auffüllung:    %s\n"
@@ -317,7 +329,7 @@ msgstr "  Strom Auffüllung:    %s\n"
 #. TRANSLATORS: The second line is column headings. All except
 #. Check are right aligned; Check is left aligned. Test with
 #. "xz -lv foo.xz".
-#: src/xz/list.c:684
+#: src/xz/list.c:726
 msgid ""
 "  Streams:\n"
 "    Stream    Blocks      CompOffset    UncompOffset        CompSize      "
@@ -329,7 +341,7 @@ msgstr ""
 
 #. TRANSLATORS: The second line is column headings. All
 #. except Check are right aligned; Check is left aligned.
-#: src/xz/list.c:739
+#: src/xz/list.c:781
 #, c-format
 msgid ""
 "  Blocks:\n"
@@ -347,53 +359,58 @@ msgstr ""
 #. are right aligned. %*s is replaced with 0-120
 #. spaces to make the CheckVal column wide enough.
 #. Test with "xz -lvv foo.xz".
-#: src/xz/list.c:751
+#: src/xz/list.c:793
 #, c-format
 msgid "      CheckVal %*s Header  Flags        CompSize    MemUsage  Filters"
 msgstr "      CheckWert %*s  Kopf  Schalter    KompGröße    Speicher  Filter"
 
-#: src/xz/list.c:829 src/xz/list.c:998
+#: src/xz/list.c:871 src/xz/list.c:1046
 #, c-format
 msgid "  Memory needed:      %s MiB\n"
 msgstr "  Benötigter Speicher: %s MiB\n"
 
-#: src/xz/list.c:831 src/xz/list.c:1000
+#: src/xz/list.c:873 src/xz/list.c:1048
 #, c-format
 msgid "  Sizes in headers:   %s\n"
 msgstr "  Größe in Köpfen:     %s\n"
 
-#: src/xz/list.c:832 src/xz/list.c:1001
+#: src/xz/list.c:874 src/xz/list.c:1049
 msgid "Yes"
 msgstr "Ja"
 
-#: src/xz/list.c:832 src/xz/list.c:1001
+#: src/xz/list.c:874 src/xz/list.c:1049
 msgid "No"
 msgstr "Nein"
 
+#: src/xz/list.c:875 src/xz/list.c:1050
+#, c-format
+msgid "  Minimum XZ Utils version: %s\n"
+msgstr "  Kleinste XZ Utils version: %s\n"
+
 #. TRANSLATORS: %s is an integer. Only the plural form of this
 #. message is used (e.g. "2 files"). Test with "xz -l foo.xz bar.xz".
-#: src/xz/list.c:977
+#: src/xz/list.c:1025
 #, c-format
 msgid "%s file\n"
 msgid_plural "%s files\n"
 msgstr[0] "%s Datei\n"
 msgstr[1] "%s Dateien\n"
 
-#: src/xz/list.c:990
+#: src/xz/list.c:1038
 msgid "Totals:"
 msgstr "Gesamt:"
 
-#: src/xz/list.c:991
+#: src/xz/list.c:1039
 #, c-format
 msgid "  Number of files:    %s\n"
 msgstr "   Anzahl Dateien:     %s\n"
 
-#: src/xz/list.c:1063
+#: src/xz/list.c:1114
 msgid "--list works only on .xz files (--format=xz or --format=auto)"
 msgstr ""
 "--list funktioniert nur mit .xz Dateien (--format=xz oder --format=auto)"
 
-#: src/xz/list.c:1069
+#: src/xz/list.c:1120
 msgid "--list does not support reading from standard input"
 msgstr "--list unterstützt kein Lesen der Standardeingabe"
 
@@ -476,6 +493,7 @@ msgid "Unexpected end of input"
 msgstr "Unerwartetes Eingabe Ende"
 
 #: src/xz/message.c:867
+#, c-format
 msgid "%s MiB of memory is required. The limiter is disabled."
 msgstr "%s MiB Speicher wird benötigt. Der Begrenzer ist deaktiviert."
 
@@ -550,6 +568,14 @@ msgstr ""
 
 #: src/xz/message.c:1127
 msgid ""
+"      --single-stream decompress only the first stream, and silently\n"
+"                      ignore possible remaining input data"
+msgstr ""
+"      --single-stream dekomprimiere nur den ersten Datenstrom und ignoriere\n"
+"                      stillschweigend mögliche weitere Eingabedaten"
+
+#: src/xz/message.c:1130
+msgid ""
 "      --no-sparse     do not create sparse files when decompressing\n"
 "  -S, --suffix=.SUF   use the suffix `.SUF' on compressed files\n"
 "      --files[=FILE]  read filenames to process from FILE; if FILE is\n"
@@ -567,7 +593,7 @@ msgstr ""
 "      --files0=[DATEI]  wie --files, aber benutze den Null Charakter als "
 "Trenner"
 
-#: src/xz/message.c:1135
+#: src/xz/message.c:1139
 msgid ""
 "\n"
 " Basic file format and compression options:\n"
@@ -575,7 +601,7 @@ msgstr ""
 "\n"
 " Grundlegende Optionen für Dateiformat und Kompression:\n"
 
-#: src/xz/message.c:1137
+#: src/xz/message.c:1141
 msgid ""
 "  -F, --format=FMT    file format to encode or decode; possible values are\n"
 "                      `auto' (default), `xz', `lzma', and `raw'\n"
@@ -591,7 +617,7 @@ msgstr ""
 "`crc32',\n"
 "                        `crc64' (Voreinstellung), oder `sha256'"
 
-#: src/xz/message.c:1144
+#: src/xz/message.c:1148
 msgid ""
 "  -0 ... -9           compression preset; default is 6; take compressor "
 "*and*\n"
@@ -604,7 +630,7 @@ msgstr ""
 "des\n"
 "                        Dekomprimierers, wenn Sie 7-9 benutzen!"
 
-#: src/xz/message.c:1148
+#: src/xz/message.c:1152
 msgid ""
 "  -e, --extreme       try to improve compression ratio by using more CPU "
 "time;\n"
@@ -615,7 +641,18 @@ msgstr ""
 "                        verhältnis zu verbessern. Das beeinflusst nicht den\n"
 "                        Speicherbedarf des Dekomprimierers."
 
-#: src/xz/message.c:1153
+#: src/xz/message.c:1157
+msgid ""
+"      --block-size=SIZE\n"
+"                      when compressing to the .xz format, start a new block\n"
+"                      after every SIZE Eingabe Bytes; 0=disabled (default)"
+msgstr ""
+"      --block-size=SIZE\n"
+"                      beim Komprimieren ins .xz Format, starte einen neuen\n"
+"                      Block nach jeweils SIZE Eingabe Bytes; 0=deaktiviert\n"
+"                      (Grundeinstellung)"
+
+#: src/xz/message.c:1161
 #, no-c-format
 msgid ""
 "      --memlimit-compress=LIMIT\n"
@@ -632,7 +669,7 @@ msgstr ""
 "RAM,\n"
 "                        oder 0 für Grundeinstellungen."
 
-#: src/xz/message.c:1160
+#: src/xz/message.c:1168
 msgid ""
 "      --no-adjust     if compression settings exceed the memory usage "
 "limit,\n"
@@ -644,7 +681,7 @@ msgstr ""
 "statt\n"
 "                        die Einstellungen nach unten anzupassen."
 
-#: src/xz/message.c:1166
+#: src/xz/message.c:1174
 msgid ""
 "\n"
 " Custom filter chain for compression (alternative for using presets):"
@@ -652,7 +689,7 @@ msgstr ""
 "\n"
 " User-definierte Filter Kette für Kompression (alternativ zu Voreinstellung):"
 
-#: src/xz/message.c:1175
+#: src/xz/message.c:1183
 msgid ""
 "\n"
 "  --lzma1[=OPTS]      LZMA1 or LZMA2; OPTS is a comma-separated list of zero "
@@ -696,7 +733,7 @@ msgstr ""
 "                          depth=NUM  Maximale Suchtiefe; 0=automatisch\n"
 "                                     (Voreinstellung)"
 
-#: src/xz/message.c:1190
+#: src/xz/message.c:1198
 msgid ""
 "\n"
 "  --x86[=OPTS]        x86 BCJ filter (32-bit and 64-bit)\n"
@@ -719,7 +756,7 @@ msgstr ""
 "                          start=NUM  Start-Offset für Konversion\n"
 "                          (Voreinstellung=0)"
 
-#: src/xz/message.c:1202
+#: src/xz/message.c:1210
 msgid ""
 "\n"
 "  --delta[=OPTS]      Delta filter; valid OPTS (valid values; default):\n"
@@ -733,7 +770,7 @@ msgstr ""
 "voneinander\n"
 "                                    subtrahiert werden (1-256; 1)"
 
-#: src/xz/message.c:1210
+#: src/xz/message.c:1218
 msgid ""
 "\n"
 " Other options:\n"
@@ -741,7 +778,7 @@ msgstr ""
 "\n"
 " Andere Optionen:\n"
 
-#: src/xz/message.c:1213
+#: src/xz/message.c:1221
 msgid ""
 "  -q, --quiet         suppress warnings; specify twice to suppress errors "
 "too\n"
@@ -753,25 +790,25 @@ msgstr ""
 "noch\n"
 "                        gesprächiger zu sein"
 
-#: src/xz/message.c:1218
+#: src/xz/message.c:1226
 msgid "  -Q, --no-warn       make warnings not affect the exit status"
 msgstr "  -Q, --no-warn         Warnungen verändern nicht den exit status"
 
-#: src/xz/message.c:1220
+#: src/xz/message.c:1228
 msgid ""
 "      --robot         use machine-parsable messages (useful for scripts)"
 msgstr ""
 "      --robot           benutze Maschinen-lesbare Meldungen (nützlich für\n"
 "                        Skripte)"
 
-#: src/xz/message.c:1223
+#: src/xz/message.c:1231
 msgid ""
 "      --info-memory   display the total amount of RAM and the currently "
 "active\n"
 "                      memory usage limits, and exit"
 msgstr "      --info-memory     zeige Speicherlimit an und terminiere"
 
-#: src/xz/message.c:1226
+#: src/xz/message.c:1234
 msgid ""
 "  -h, --help          display the short help (lists only the basic options)\n"
 "  -H, --long-help     display this long help and exit"
@@ -780,7 +817,7 @@ msgstr ""
 "                        Optionen)\n"
 "  -H, --long-help       zeige diese lange Hilfe an und terminiere"
 
-#: src/xz/message.c:1230
+#: src/xz/message.c:1238
 msgid ""
 "  -h, --help          display this short help and exit\n"
 "  -H, --long-help     display the long help (lists also the advanced options)"
@@ -790,11 +827,11 @@ msgstr ""
 "fortgeschrittene\n"
 "                        Optionen an)"
 
-#: src/xz/message.c:1235
+#: src/xz/message.c:1243
 msgid "  -V, --version       display the version number and exit"
 msgstr "  -V, --version         zeige Versionsnummer an und terminiere"
 
-#: src/xz/message.c:1237
+#: src/xz/message.c:1245
 msgid ""
 "\n"
 "With no FILE, or when FILE is -, read standard input.\n"
@@ -807,7 +844,7 @@ msgstr ""
 #. for this package. Please add _another line_ saying
 #. "Report translation bugs to <...>\n" with the email or WWW
 #. address for translation bugs. Thanks.
-#: src/xz/message.c:1243
+#: src/xz/message.c:1251
 #, c-format
 msgid "Report bugs to <%s> (in English or Finnish).\n"
 msgstr ""
@@ -815,7 +852,7 @@ msgstr ""
 "Melde Übersetzungsfehler an <maan@systemlinux.org> (in englisch oder "
 "deutsch).\n"
 
-#: src/xz/message.c:1245
+#: src/xz/message.c:1253
 #, c-format
 msgid "%s home page: <%s>\n"
 msgstr "%s Homepage: <%s>\n"
@@ -853,7 +890,7 @@ msgstr ""
 "Der ausgewählte Algorithmus zum Auffinden von Übereinstimmungen braucht "
 "mindestens nice=%<PRIu32>"
 
-#: src/xz/suffix.c:101 src/xz/suffix.c:194
+#: src/xz/suffix.c:133 src/xz/suffix.c:258
 #, c-format
 msgid ""
 "%s: With --format=raw, --suffix=.SUF is required unless writing to stdout"
@@ -861,17 +898,17 @@ msgstr ""
 "%s: Mit --format=raw ist --sufix=.SUF notwendig, falls nicht nach stdout "
 "geschrieben wird"
 
-#: src/xz/suffix.c:121
+#: src/xz/suffix.c:164
 #, c-format
 msgid "%s: Filename has an unknown suffix, skipping"
 msgstr "%s: Dateiname hat unbekannte Endung, überspringe"
 
-#: src/xz/suffix.c:175 src/xz/suffix.c:184
+#: src/xz/suffix.c:185
 #, c-format
 msgid "%s: File already has `%s' suffix, skipping"
 msgstr "%s: Datei hat bereits `%s' Endung, überspringe"
 
-#: src/xz/suffix.c:235
+#: src/xz/suffix.c:393
 #, c-format
 msgid "%s: Invalid filename suffix"
 msgstr "%s: Ungültige Datei Endung"

po/fr.po

@@ -6,7 +6,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: xz-utils\n"
 "Report-Msgid-Bugs-To: lasse.collin@tukaani.org\n"
-"POT-Creation-Date: 2012-05-30 22:10+0200\n"
+"POT-Creation-Date: 2012-05-30 20:40+0200\n"
 "PO-Revision-Date: 2010-09-24 21;12+0200\n"
 "Last-Translator: Adrien Nader <camaradetux@gmail.com>\n"
 "Language-Team: None\n"
@@ -16,59 +16,69 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=(n==1) ? 0 : 1;\n"
 
-#: src/xz/args.c:333
+#: src/xz/args.c:338
 #, c-format
 msgid "%s: Unknown file format type"
 msgstr "%s : Format de fichier inconnu"
 
-#: src/xz/args.c:356 src/xz/args.c:364
+#: src/xz/args.c:361 src/xz/args.c:369
 #, c-format
 msgid "%s: Unsupported integrity check type"
 msgstr "%s : Type de vérification d'intégrité inconnu"
 
-#: src/xz/args.c:382
+#: src/xz/args.c:396
 msgid "Only one file can be specified with `--files' or `--files0'."
 msgstr "Un seul fichier peut être spécifié avec `--files' ou `--files0'."
 
-#: src/xz/args.c:445
+#: src/xz/args.c:459
 #, c-format
 msgid "The environment variable %s contains too many arguments"
 msgstr "La variable d'environnement %s contient trop d'arguments"
 
-#: src/xz/coder.c:95
+#: src/xz/coder.c:105
 msgid "Maximum number of filters is four"
 msgstr "Le nombre maximal de filtres est quatre"
 
-#: src/xz/coder.c:108
+#: src/xz/coder.c:118
 msgid "Memory usage limit is too low for the given filter setup."
 msgstr "La limite d'utilisation mémoire est trop basse pour la configuration de filtres donnée."
 
-#: src/xz/coder.c:129
+#: src/xz/coder.c:148
 msgid "Using a preset in raw mode is discouraged."
 msgstr "Utiliser un préréglage en mode `raw' est déconseillé."
 
-#: src/xz/coder.c:131
+#: src/xz/coder.c:150
 msgid "The exact options of the presets may vary between software versions."
 msgstr "Le détail des préréglages peut varier entre différentes versions du logiciel."
 
-#: src/xz/coder.c:157
+#: src/xz/coder.c:176
 msgid "The .lzma format supports only the LZMA1 filter"
 msgstr "Le format .lzma ne prend en charge que le filtre LZMA1"
 
-#: src/xz/coder.c:165
+#: src/xz/coder.c:184
 msgid "LZMA1 cannot be used with the .xz format"
 msgstr "Le filtre LZMA1 ne peut être utilisé avec le format .xz"
 
-#: src/xz/coder.c:182
+#: src/xz/coder.c:203
+#, c-format
+msgid "Using up to %<PRIu32> threads."
+msgstr "Jusqu'à %<PRIu32> threads seront utilisés."
+
+#: src/xz/coder.c:216
 msgid "Unsupported filter chain or filter options"
 msgstr "Enchaînement ou options de filtres non pris en charge"
 
-#: src/xz/coder.c:190
+#: src/xz/coder.c:224
 #, c-format
 msgid "Decompression will need %s MiB of memory."
 msgstr "La décompression nécessitera %s MiB de mémoire."
 
-#: src/xz/coder.c:247
+#: src/xz/coder.c:259
+#, c-format
+msgid "Adjusted the number of threads from %s to %s to not exceed the memory usage limit of %s MiB"
+msgstr "Nombre de threads réduit de %s à %s pour ne pas dépasser la limite d'utilisation mémoire de %s MiB"
+
+#: src/xz/coder.c:313
 #, c-format
 msgid "Adjusted LZMA%c dictionary size from %s MiB to %s MiB to not exceed the memory usage limit of %s MiB"
 msgstr "Taille du dictionnaire LZMA%c réduite de %s MiB à %s MiB pour ne pas dépasser la limite d'utilisation mémoire de %s MiB"
@@ -83,118 +93,118 @@ msgstr "Taille du dictionnaire LZMA%c réduite de %s MiB à %s MiB pour ne pas d
 #. it is possible that the user has put a new file in place
 #. of the original file, and in that case it obviously
 #. shouldn't be removed.
-#: src/xz/file_io.c:137
+#: src/xz/file_io.c:136
 #, c-format
 msgid "%s: File seems to have been moved, not removing"
 msgstr "%s : Le fichier a apparemment été déplacé, suppression annulée"
 
-#: src/xz/file_io.c:144 src/xz/file_io.c:589
+#: src/xz/file_io.c:143 src/xz/file_io.c:635
 #, c-format
 msgid "%s: Cannot remove: %s"
 msgstr "%s : Impossible de supprimer : %s"
 
-#: src/xz/file_io.c:169
+#: src/xz/file_io.c:168
 #, c-format
 msgid "%s: Cannot set the file owner: %s"
 msgstr "%s : Impossible de modifier le propriétaire du fichier : %s"
 
-#: src/xz/file_io.c:175
+#: src/xz/file_io.c:174
 #, c-format
 msgid "%s: Cannot set the file group: %s"
 msgstr "%s : Impossible de modifier le groupe propriétaire du fichier : %s"
 
-#: src/xz/file_io.c:194
+#: src/xz/file_io.c:193
 #, c-format
 msgid "%s: Cannot set the file permissions: %s"
 msgstr "%s : Impossible de modifier les permissions du fichier : %s"
 
-#: src/xz/file_io.c:337 src/xz/file_io.c:420
+#: src/xz/file_io.c:340 src/xz/file_io.c:423
 #, c-format
 msgid "%s: Is a symbolic link, skipping"
 msgstr "%s est un lien symbolique : ignoré"
 
-#: src/xz/file_io.c:455
+#: src/xz/file_io.c:468
 #, c-format
 msgid "%s: Is a directory, skipping"
 msgstr "%s est un répertoire : ignoré"
 
-#: src/xz/file_io.c:461
+#: src/xz/file_io.c:474
 #, c-format
 msgid "%s: Not a regular file, skipping"
 msgstr "%s n'est pas un fichier régulier : ignoré"
 
-#: src/xz/file_io.c:478
+#: src/xz/file_io.c:491
 #, c-format
 msgid "%s: File has setuid or setgid bit set, skipping"
 msgstr "%s : Le fichier possède les bits `setuid' ou `setgid' : ignoré"
 
-#: src/xz/file_io.c:485
+#: src/xz/file_io.c:498
 #, c-format
 msgid "%s: File has sticky bit set, skipping"
 msgstr "%s : Le fichier possède le bit `sticky' : ignoré"
 
-#: src/xz/file_io.c:492
+#: src/xz/file_io.c:505
 #, c-format
 msgid "%s: Input file has more than one hard link, skipping"
 msgstr "%s : Le fichier d'entrée a plus d'un lien matériel : ignoré"
 
-#: src/xz/file_io.c:713
+#: src/xz/file_io.c:761
 #, c-format
 msgid "Error restoring the O_APPEND flag to standard output: %s"
 msgstr "Impossible de rétablir le drapeau O_APPEND sur la sortie standard : %s"
 
-#: src/xz/file_io.c:725
+#: src/xz/file_io.c:773
 #, c-format
 msgid "%s: Closing the file failed: %s"
 msgstr "%s : Impossible de fermer le fichier : %s"
 
-#: src/xz/file_io.c:761 src/xz/file_io.c:945
+#: src/xz/file_io.c:809 src/xz/file_io.c:1008
 #, c-format
 msgid "%s: Seeking failed when trying to create a sparse file: %s"
 msgstr "%s : Impossible de se déplacer dans le fichier pour créer un 'sparse file' : %s"
 
-#: src/xz/file_io.c:820
+#: src/xz/file_io.c:883
 #, c-format
 msgid "%s: Read error: %s"
 msgstr "%s : Erreur d'écriture : %s"
 
-#: src/xz/file_io.c:843
+#: src/xz/file_io.c:906
 #, c-format
 msgid "%s: Error seeking the file: %s"
 msgstr "%s : Impossible de se déplacer dans le fichier : %s"
 
-#: src/xz/file_io.c:853
+#: src/xz/file_io.c:916
 #, c-format
 msgid "%s: Unexpected end of file"
 msgstr "%s : Fin de fichier inattendue"
 
-#: src/xz/file_io.c:903
+#: src/xz/file_io.c:966
 #, c-format
 msgid "%s: Write error: %s"
 msgstr "%s : Erreur d'écriture : %s"
 
-#: src/xz/hardware.c:100
+#: src/xz/hardware.c:101
 msgid "Disabled"
 msgstr "Désactivé"
 
 #. TRANSLATORS: Test with "xz --info-memory" to see if
 #. the alignment looks nice.
-#: src/xz/hardware.c:119
+#: src/xz/hardware.c:120
 msgid "Total amount of physical memory (RAM): "
 msgstr "Quantité totale de mémoire physique (RAM) :  "
 
-#: src/xz/hardware.c:121
+#: src/xz/hardware.c:122
 msgid "Memory usage limit for compression:    "
 msgstr "Limite d'utilisation pour la compression :   "
 
-#: src/xz/hardware.c:123
+#: src/xz/hardware.c:124
 msgid "Memory usage limit for decompression:  "
 msgstr "Limite d'utilisation pour la décompression : "
 
 #. TRANSLATORS: Indicates that there is no integrity check.
 #. This string is used in tables, so the width must not
 #. exceed ten columns with a fixed-width font.
-#: src/xz/list.c:62
+#: src/xz/list.c:65
 msgid "None"
 msgstr "Aucune"
 
@@ -203,60 +213,60 @@ msgstr "Aucune"
 #. strings are used in tables, so the width must not exceed ten
 #. columns with a fixed-width font. It's OK to omit the dash if
 #. you need space for one extra letter, but don't use spaces.
-#: src/xz/list.c:69
+#: src/xz/list.c:72
 msgid "Unknown-2"
 msgstr "Inconnue-2"
 
-#: src/xz/list.c:70
+#: src/xz/list.c:73
 msgid "Unknown-3"
 msgstr "Inconnue-3"
 
-#: src/xz/list.c:72
+#: src/xz/list.c:75
 msgid "Unknown-5"
 msgstr "Inconnue-5"
 
-#: src/xz/list.c:73
+#: src/xz/list.c:76
 msgid "Unknown-6"
 msgstr "Inconnue-6"
 
-#: src/xz/list.c:74
+#: src/xz/list.c:77
 msgid "Unknown-7"
 msgstr "Inconnue-7"
 
-#: src/xz/list.c:75
+#: src/xz/list.c:78
 msgid "Unknown-8"
 msgstr "Inconnue-8"
 
-#: src/xz/list.c:76
+#: src/xz/list.c:79
 msgid "Unknown-9"
 msgstr "Inconnue-9"
 
-#: src/xz/list.c:78
+#: src/xz/list.c:81
 msgid "Unknown-11"
 msgstr "Inconnue-11"
 
-#: src/xz/list.c:79
+#: src/xz/list.c:82
 msgid "Unknown-12"
 msgstr "Inconnue-12"
 
-#: src/xz/list.c:80
+#: src/xz/list.c:83
 msgid "Unknown-13"
 msgstr "Inconnue-13"
 
-#: src/xz/list.c:81
+#: src/xz/list.c:84
 msgid "Unknown-14"
 msgstr "Inconnue-14"
 
-#: src/xz/list.c:82
+#: src/xz/list.c:85
 msgid "Unknown-15"
 msgstr "Inconnue-15"
 
-#: src/xz/list.c:126
+#: src/xz/list.c:153
 #, c-format
 msgid "%s: File is empty"
 msgstr "%s : Le fichier est vide"
 
-#: src/xz/list.c:131
+#: src/xz/list.c:158
 #, c-format
 msgid "%s: Too small to be a valid .xz file"
 msgstr "%s : Trop petit pour être un fichier xz valide."
@@ -265,41 +275,41 @@ msgstr "%s : Trop petit pour être un fichier xz valide."
 #. to Ratio, the columns are right aligned. Check and Filename
 #. are left aligned. If you need longer words, it's OK to
 #. use two lines here. Test with "xz -l foo.xz".
-#: src/xz/list.c:603
+#: src/xz/list.c:645
 msgid "Strms  Blocks   Compressed Uncompressed  Ratio  Check   Filename"
 msgstr "Flux    Blocs    Compressé  Décompressé  Ratio  Vérif   Nom de fichier"
 
-#: src/xz/list.c:643
+#: src/xz/list.c:685
 #, c-format
 msgid "  Streams:            %s\n"
 msgstr "  Flux :                            %s\n"
 
-#: src/xz/list.c:645
+#: src/xz/list.c:687
 #, c-format
 msgid "  Blocks:             %s\n"
 msgstr "  Blocs :                           %s\n"
 
-#: src/xz/list.c:647
+#: src/xz/list.c:689
 #, c-format
 msgid "  Compressed size:    %s\n"
 msgstr "  Taille compressé :                %s\n"
 
-#: src/xz/list.c:650
+#: src/xz/list.c:692
 #, c-format
 msgid "  Uncompressed size:  %s\n"
 msgstr "  Taille décompressé :              %s\n"
 
-#: src/xz/list.c:653
+#: src/xz/list.c:695
 #, c-format
 msgid "  Ratio:              %s\n"
 msgstr "  Ratio :                           %s\n"
 
-#: src/xz/list.c:655
+#: src/xz/list.c:697
 #, c-format
 msgid "  Check:              %s\n"
 msgstr "  Vérification :                    %s\n"
 
-#: src/xz/list.c:656
+#: src/xz/list.c:698
 #, c-format
 msgid "  Stream padding:     %s\n"
 msgstr "  Octets de rembourrage du flux :   %s\n"
@@ -307,7 +317,7 @@ msgstr "  Octets de rembourrage du flux :   %s\n"
 #. TRANSLATORS: The second line is column headings. All except
 #. Check are right aligned; Check is left aligned. Test with
 #. "xz -lv foo.xz".
-#: src/xz/list.c:684
+#: src/xz/list.c:726
 msgid ""
 "  Streams:\n"
 "    Stream    Blocks      CompOffset    UncompOffset        CompSize      UncompSize  Ratio  Check      Padding"
@@ -317,7 +327,7 @@ msgstr ""
 
 #. TRANSLATORS: The second line is column headings. All
 #. except Check are right aligned; Check is left aligned.
-#: src/xz/list.c:739
+#: src/xz/list.c:781
 #, c-format
 msgid ""
 "  Blocks:\n"
@@ -333,52 +343,57 @@ msgstr ""
 #. are right aligned. %*s is replaced with 0-120
 #. spaces to make the CheckVal column wide enough.
 #. Test with "xz -lvv foo.xz".
-#: src/xz/list.c:751
+#: src/xz/list.c:793
 #, c-format
 msgid "      CheckVal %*s Header  Flags        CompSize    MemUsage  Filters"
 msgstr "     ValVérif %*sEn-tête  Drapeaux   TailleComp     UtilMém  Filtres"
 
-#: src/xz/list.c:829 src/xz/list.c:998
+#: src/xz/list.c:871 src/xz/list.c:1046
 #, c-format
 msgid "  Memory needed:      %s MiB\n"
 msgstr "  Mémoire nécessaire :              %s MiB\n"
 
-#: src/xz/list.c:831 src/xz/list.c:1000
+#: src/xz/list.c:873 src/xz/list.c:1048
 #, c-format
 msgid "  Sizes in headers:   %s\n"
 msgstr "  Tailles stockées dans l'en-tête : %s\n"
 
-#: src/xz/list.c:832 src/xz/list.c:1001
+#: src/xz/list.c:874 src/xz/list.c:1049
 msgid "Yes"
 msgstr "Oui"
 
-#: src/xz/list.c:832 src/xz/list.c:1001
+#: src/xz/list.c:874 src/xz/list.c:1049
 msgid "No"
 msgstr "Non"
 
+#: src/xz/list.c:875 src/xz/list.c:1050
+#, c-format
+msgid "  Minimum XZ Utils version: %s\n"
+msgstr "  Version minimale de XZ Utils : %s\n"
+
 #. TRANSLATORS: %s is an integer. Only the plural form of this
 #. message is used (e.g. "2 files"). Test with "xz -l foo.xz bar.xz".
-#: src/xz/list.c:977
+#: src/xz/list.c:1025
 #, c-format
 msgid "%s file\n"
 msgid_plural "%s files\n"
 msgstr[0] "%s fichier\n"
 msgstr[1] "%s fichiers\n"
 
-#: src/xz/list.c:990
+#: src/xz/list.c:1038
 msgid "Totals:"
 msgstr "Totaux :"
 
-#: src/xz/list.c:991
+#: src/xz/list.c:1039
 #, c-format
 msgid "  Number of files:    %s\n"
 msgstr "  Nombre de fichiers : %s\n"
 
-#: src/xz/list.c:1063
+#: src/xz/list.c:1114
 msgid "--list works only on .xz files (--format=xz or --format=auto)"
 msgstr "--list ne marche que sur les fichiers .xz (--format=xz ou --format=auto)"
 
-#: src/xz/list.c:1069
+#: src/xz/list.c:1120
 msgid "--list does not support reading from standard input"
 msgstr "--list est incompatible avec la lecture sur l'entrée standard"
 
@@ -525,6 +540,14 @@ msgstr ""
 
 #: src/xz/message.c:1127
 msgid ""
+"      --single-stream decompress only the first stream, and silently\n"
+"                      ignore possible remaining input data"
+msgstr ""
+"      --single-stream décompresser uniquement le premier flux et ignorer\n"
+"                      silenciseusement les données éventuellement restantes"
+
+#: src/xz/message.c:1130
+msgid ""
 "      --no-sparse     do not create sparse files when decompressing\n"
 "  -S, --suffix=.SUF   use the suffix `.SUF' on compressed files\n"
 "      --files[=FILE]  read filenames to process from FILE; if FILE is\n"
@@ -539,7 +562,7 @@ msgstr ""
 "                      et doivent être suivis d'un caractère de retour à la ligne\n"
 "      --files0[=FILE] comme --files mais avec un caractère null comme séparateur"
 
-#: src/xz/message.c:1135
+#: src/xz/message.c:1139
 msgid ""
 "\n"
 " Basic file format and compression options:\n"
@@ -547,7 +570,7 @@ msgstr ""
 "\n"
 " Options basiques de format de fichier et de compression :\n"
 
-#: src/xz/message.c:1137
+#: src/xz/message.c:1141
 msgid ""
 "  -F, --format=FMT    file format to encode or decode; possible values are\n"
 "                      `auto' (default), `xz', `lzma', and `raw'\n"
@@ -559,7 +582,7 @@ msgstr ""
 "  -C, --check=CHECK   type de vérification d'intégrité : `none' (à utiliser avec\n"
 "                      précaution), `crc32', `crc64' (par défaut) ou `sha256'"
 
-#: src/xz/message.c:1144
+#: src/xz/message.c:1148
 msgid ""
 "  -0 ... -9           compression preset; default is 6; take compressor *and*\n"
 "                      decompressor memory usage into account before using 7-9!"
@@ -568,7 +591,7 @@ msgstr ""
 "                      l'utilisation mémoire du compresseur *et* du décompresseur\n"
 "                      avant d'utiliser 7, 8 ou 9 !"
 
-#: src/xz/message.c:1148
+#: src/xz/message.c:1152
 msgid ""
 "  -e, --extreme       try to improve compression ratio by using more CPU time;\n"
 "                      does not affect decompressor memory requirements"
@@ -577,7 +600,17 @@ msgstr ""
 "                      de temps processeur sans affecter les besoins mémoire du\n"
 "                      décompresseur"
 
-#: src/xz/message.c:1153
+#: src/xz/message.c:1157
+msgid ""
+"      --block-size=SIZE\n"
+"                      when compressing to the .xz format, start a new block\n"
+"                      after every SIZE bytes of input; 0=disabled (default)"
+msgstr ""
+"      --block-size=SIZE\n"
+"                      pour une compression au format .xz, entamer un nouveau\n"
+"                      bloc après SIZE octets d'entrée ; 0=désactivé (par défaut)"
+
+#: src/xz/message.c:1161
 #, no-c-format
 msgid ""
 "      --memlimit-compress=LIMIT\n"
@@ -593,7 +626,7 @@ msgstr ""
 "                      décompression ou les deux ; LIMIT est en octets, % de\n"
 "                      RAM, ou 0 pour les valeurs par défaut"
 
-#: src/xz/message.c:1160
+#: src/xz/message.c:1168
 msgid ""
 "      --no-adjust     if compression settings exceed the memory usage limit,\n"
 "                      give an error instead of adjusting the settings downwards"
@@ -602,7 +635,7 @@ msgstr ""
 "                      d'utilisation mémoire, renvoyer une erreur plutôt que de\n"
 "                      diminuer les réglages"
 
-#: src/xz/message.c:1166
+#: src/xz/message.c:1174
 msgid ""
 "\n"
 " Custom filter chain for compression (alternative for using presets):"
@@ -610,7 +643,7 @@ msgstr ""
 "\n"
 " Enchaînement de filtres de compression personnalisé (au lieu des préréglages) :"
 
-#: src/xz/message.c:1175
+#: src/xz/message.c:1183
 msgid ""
 "\n"
 "  --lzma1[=OPTS]      LZMA1 or LZMA2; OPTS is a comma-separated list of zero or\n"
@@ -639,7 +672,7 @@ msgstr ""
 "                        depth=NUM  profondeur de recherche maximale ;\n"
 "                                      0=automatique (par défaut)"
 
-#: src/xz/message.c:1190
+#: src/xz/message.c:1198
 msgid ""
 "\n"
 "  --x86[=OPTS]        x86 BCJ filter (32-bit and 64-bit)\n"
@@ -661,7 +694,7 @@ msgstr ""
 "                      OPTS valides pour tous les filtres BCJ :\n"
 "                        start=NUM  start offset for conversions (default=0)"
 
-#: src/xz/message.c:1202
+#: src/xz/message.c:1210
 msgid ""
 "\n"
 "  --delta[=OPTS]      Delta filter; valid OPTS (valid values; default):\n"
@@ -673,7 +706,7 @@ msgstr ""
 "                        dist=NUM   distance entre les octets soustraits\n"
 "                                   les uns aux autres (1-256 ; 1)"
 
-#: src/xz/message.c:1210
+#: src/xz/message.c:1218
 msgid ""
 "\n"
 " Other options:\n"
@@ -681,7 +714,7 @@ msgstr ""
 "\n"
 " Autres options :\n"
 
-#: src/xz/message.c:1213
+#: src/xz/message.c:1221
 msgid ""
 "  -q, --quiet         suppress warnings; specify twice to suppress errors too\n"
 "  -v, --verbose       be verbose; specify twice for even more verbose"
@@ -690,17 +723,17 @@ msgstr ""
 "                      aussi supprimer les erreur\n"
 "  -v, --verbose       être bavard ; spécifier deux fois pour l'être davantage"
 
-#: src/xz/message.c:1218
+#: src/xz/message.c:1226
 msgid "  -Q, --no-warn       make warnings not affect the exit status"
 msgstr "  -Q, --no-warn       les avertissements ne modifient pas le code de sortie"
 
-#: src/xz/message.c:1220
+#: src/xz/message.c:1228
 msgid "      --robot         use machine-parsable messages (useful for scripts)"
 msgstr ""
 "      --robot         utiliser des messages lisibles par un programme\n"
 "                      (utile pour les scripts)"
 
-#: src/xz/message.c:1223
+#: src/xz/message.c:1231
 msgid ""
 "      --info-memory   display the total amount of RAM and the currently active\n"
 "                      memory usage limits, and exit"
@@ -708,7 +741,7 @@ msgstr ""
 "      --info-memory   affiche la quantité totale de RAM et la limite actuelle\n"
 "                      en mémoire puis quitte"
 
-#: src/xz/message.c:1226
+#: src/xz/message.c:1234
 msgid ""
 "  -h, --help          display the short help (lists only the basic options)\n"
 "  -H, --long-help     display this long help and exit"
@@ -716,7 +749,7 @@ msgstr ""
 "  -h, --help          affiche l'aide courte (ne liste que les options de base)\n"
 "  -H, --long-help     affiche l'aide longue (ceci) puis quitte"
 
-#: src/xz/message.c:1230
+#: src/xz/message.c:1238
 msgid ""
 "  -h, --help          display this short help and exit\n"
 "  -H, --long-help     display the long help (lists also the advanced options)"
@@ -724,11 +757,11 @@ msgstr ""
 "  -h, --help          affiche l'aide courte (ceci) puis quitte\n"
 "  -H, --long-help     affiche l'aide longue (liste aussi les options avancées)"
 
-#: src/xz/message.c:1235
+#: src/xz/message.c:1243
 msgid "  -V, --version       display the version number and exit"
 msgstr "  -V, --version       affiche le numéro de version puis quitte"
 
-#: src/xz/message.c:1237
+#: src/xz/message.c:1245
 msgid ""
 "\n"
 "With no FILE, or when FILE is -, read standard input.\n"
@@ -740,14 +773,14 @@ msgstr ""
 #. for this package. Please add _another line_ saying
 #. "Report translation bugs to <...>\n" with the email or WWW
 #. address for translation bugs. Thanks.
-#: src/xz/message.c:1243
+#: src/xz/message.c:1251
 #, c-format
 msgid "Report bugs to <%s> (in English or Finnish).\n"
 msgstr ""
 "Signaler les bogues à <%s> (en anglais ou en finlandais).\n"
 "Signaler les bogues de traduction à <camaradetux@gmail.com>.\n"
 
-#: src/xz/message.c:1245
+#: src/xz/message.c:1253
 #, c-format
 msgid "%s home page: <%s>\n"
 msgstr "%s page du projet : <%s>\n"
@@ -781,22 +814,22 @@ msgstr "La somme de lc et lp ne doit pas dépasser 4"
 msgid "The selected match finder requires at least nice=%<PRIu32>"
 msgstr "Le `match finder' choisi nécessite au moins nice=%<PRIu32>"
 
-#: src/xz/suffix.c:101 src/xz/suffix.c:194
+#: src/xz/suffix.c:133 src/xz/suffix.c:258
 #, c-format
 msgid "%s: With --format=raw, --suffix=.SUF is required unless writing to stdout"
 msgstr "%s : Avec --format=raw, --suffix=.SUF est nécessaire sauf lors de l'écriture vers stdout"
 
-#: src/xz/suffix.c:121
+#: src/xz/suffix.c:164
 #, c-format
 msgid "%s: Filename has an unknown suffix, skipping"
 msgstr "%s : Le fichier a un suffixe inconnu, ignoré"
 
-#: src/xz/suffix.c:175 src/xz/suffix.c:184
+#: src/xz/suffix.c:185
 #, c-format
 msgid "%s: File already has `%s' suffix, skipping"
 msgstr "%s : Le fichier a déjà le suffixe '%s', ignoré"
 
-#: src/xz/suffix.c:235
+#: src/xz/suffix.c:393
 #, c-format
 msgid "%s: Invalid filename suffix"
 msgstr "%s: Suffixe de nom de fichier invalide"
@@ -839,25 +872,3 @@ msgstr "Impossible d'écrire vers la sortie standard"
 #: src/common/tuklib_exit.c:42
 msgid "Unknown error"
 msgstr "Erreur inconnue"
-
-#~ msgid "Using up to %<PRIu32> threads."
-#~ msgstr "Jusqu'à %<PRIu32> threads seront utilisés."
-
-#~ msgid "Adjusted the number of threads from %s to %s to not exceed the memory usage limit of %s MiB"
-#~ msgstr "Nombre de threads réduit de %s à %s pour ne pas dépasser la limite d'utilisation mémoire de %s MiB"
-
-#~ msgid ""
-#~ "      --single-stream decompress only the first stream, and silently\n"
-#~ "                      ignore possible remaining input data"
-#~ msgstr ""
-#~ "      --single-stream décompresser uniquement le premier flux et ignorer\n"
-#~ "                      silenciseusement les données éventuellement restantes"
-
-#~ msgid ""
-#~ "      --block-size=SIZE\n"
-#~ "                      when compressing to the .xz format, start a new block\n"
-#~ "                      after every SIZE bytes of input; 0=disabled (default)"
-#~ msgstr ""
-#~ "      --block-size=SIZE\n"
-#~ "                      pour une compression au format .xz, entamer un nouveau\n"
-#~ "                      bloc après SIZE octets d'entrée ; 0=désactivé (par défaut)"

po/it.po

@@ -2,80 +2,97 @@
 # This file is in the public domain
 # Gruppo traduzione italiano di Ubuntu-it <gruppo-traduzione@ubuntu-it.org>, 2009, 2010
 # Lorenzo De Liso <blackz@ubuntu.com>, 2010.
-# Milo Casagrande <milo@ubuntu.com>, 2009, 2010, 2011, 2012.
+# Milo Casagrande <milo@ubuntu.com>, 2009, 2010, 2011.
 #
 msgid ""
 msgstr ""
 "Project-Id-Version: xz-utils\n"
-"Report-Msgid-Bugs-To: lasse.collin@tukaani.org\n"
-"POT-Creation-Date: 2012-05-29 13:50+0300\n"
-"PO-Revision-Date: 2012-05-31 09:57+0800\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2011-05-27 11:59+0200\n"
+"PO-Revision-Date: 2011-05-27 11:59+0200\n"
 "Last-Translator: Milo Casagrande <milo@ubuntu.com>\n"
 "Language-Team: Italian <tp@lists.linux.it>\n"
 "Language: it\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
-"Content-Transfer-Encoding: 8-bit\n"
+"Content-Transfer-Encoding: 8bit\n"
 "X-Launchpad-Export-Date: 2010-08-16 19:16+0000\n"
 "X-Generator: Launchpad (build Unknown)\n"
-"Plural-Forms: nplurals=2; plural=(n!=1);\n"
+"Plural-Forms: nplurals=2; plural=(n != 1)\n"
 
-#: src/xz/args.c:333
+#: ../src/xz/args.c:338
 #, c-format
 msgid "%s: Unknown file format type"
 msgstr "%s: tipo di formato del file sconosciuto"
 
-#: src/xz/args.c:356 src/xz/args.c:364
+#: ../src/xz/args.c:361 ../src/xz/args.c:369
 #, c-format
 msgid "%s: Unsupported integrity check type"
 msgstr "%s: tipo di controllo integrità non supportato"
 
-#: src/xz/args.c:382
+#: ../src/xz/args.c:396
 msgid "Only one file can be specified with `--files' or `--files0'."
 msgstr "Solo un file può essere specificato con \"--files\" o \"--files0\"."
 
-#: src/xz/args.c:445
+#: ../src/xz/args.c:459
 #, c-format
 msgid "The environment variable %s contains too many arguments"
 msgstr "La variabile d'ambiente %s contiene troppi argomenti"
 
-#: src/xz/coder.c:95
+#: ../src/xz/coder.c:105
 msgid "Maximum number of filters is four"
 msgstr "Il numero massimo di filtri è quattro"
 
-#: src/xz/coder.c:108
+#: ../src/xz/coder.c:118
 msgid "Memory usage limit is too low for the given filter setup."
 msgstr ""
 "Il limite dell'uso della memoria è troppo basso per l'impostazione del "
 "filtro dato."
 
-#: src/xz/coder.c:129
+#. The message is shown only if warnings are allowed
+#. but the exit status isn't changed.
+#: ../src/xz/coder.c:148
 msgid "Using a preset in raw mode is discouraged."
 msgstr "Non è consigliato usare un preset nella modalità raw."
 
-#: src/xz/coder.c:131
+#: ../src/xz/coder.c:150
 msgid "The exact options of the presets may vary between software versions."
 msgstr ""
 "Le opzioni esatte per i preset possono variare tra le versioni del software."
 
-#: src/xz/coder.c:157
+#: ../src/xz/coder.c:176
 msgid "The .lzma format supports only the LZMA1 filter"
 msgstr "Il formato .lzma supporta solo il filtro LZMA1"
 
-#: src/xz/coder.c:165
+#: ../src/xz/coder.c:184
 msgid "LZMA1 cannot be used with the .xz format"
 msgstr "LZMA1 non può essere usato con il formato .xz"
 
-#: src/xz/coder.c:182
+#: ../src/xz/coder.c:203
+#, c-format
+msgid "Using up to %<PRIu32> threads."
+msgstr "Vengono usati circa %<PRIu32> thread."
+
+#: ../src/xz/coder.c:216
 msgid "Unsupported filter chain or filter options"
 msgstr "Catena di filtri od opzioni del filtro non supportata"
 
-#: src/xz/coder.c:190
+#: ../src/xz/coder.c:224
 #, c-format
 msgid "Decompression will need %s MiB of memory."
 msgstr "L'estrazione necessita di %s MiB di memoria."
 
-#: src/xz/coder.c:247
+#: ../src/xz/coder.c:259
+#, c-format
+msgid ""
+"Adjusted the number of threads from %s to %s to not exceed the memory usage "
+"limit of %s MiB"
+msgstr ""
+"Regolato il numero di thread da %s a %s per non eccedere il limite di "
+"utilizzo della memoria di %s MiB"
+
+#. Tell the user that we decreased the dictionary size.
+#: ../src/xz/coder.c:313
 #, c-format
 msgid ""
 "Adjusted LZMA%c dictionary size from %s MiB to %s MiB to not exceed the "
@@ -94,119 +111,128 @@ msgstr ""
 #. it is possible that the user has put a new file in place
 #. of the original file, and in that case it obviously
 #. shouldn't be removed.
-#: src/xz/file_io.c:137
+#: ../src/xz/file_io.c:136
 #, c-format
 msgid "%s: File seems to have been moved, not removing"
 msgstr "%s: sembra che il file sia stato spostato, non viene rimosso"
 
-#: src/xz/file_io.c:144 src/xz/file_io.c:589
+#: ../src/xz/file_io.c:143 ../src/xz/file_io.c:635
 #, c-format
 msgid "%s: Cannot remove: %s"
 msgstr "%s: impossibile rimuovere: %s"
 
-#: src/xz/file_io.c:169
+#: ../src/xz/file_io.c:168
 #, c-format
 msgid "%s: Cannot set the file owner: %s"
 msgstr "%s: impossibile impostare il proprietario del file: %s"
 
-#: src/xz/file_io.c:175
+#: ../src/xz/file_io.c:174
 #, c-format
 msgid "%s: Cannot set the file group: %s"
 msgstr "%s: impossibile impostare il gruppo del file: %s"
 
-#: src/xz/file_io.c:194
+#: ../src/xz/file_io.c:193
 #, c-format
 msgid "%s: Cannot set the file permissions: %s"
 msgstr "%s: impossibile impostare i permessi del file: %s"
 
-#: src/xz/file_io.c:337 src/xz/file_io.c:420
+#: ../src/xz/file_io.c:340 ../src/xz/file_io.c:423
 #, c-format
 msgid "%s: Is a symbolic link, skipping"
 msgstr "%s: è un collegamento simbolico, viene saltato"
 
-#: src/xz/file_io.c:455
+#: ../src/xz/file_io.c:468
 #, c-format
 msgid "%s: Is a directory, skipping"
 msgstr "%s: è una directory, viene saltata"
 
-#: src/xz/file_io.c:461
+#: ../src/xz/file_io.c:474
 #, c-format
 msgid "%s: Not a regular file, skipping"
 msgstr "%s: non è un file regolare, viene saltato"
 
-#: src/xz/file_io.c:478
+#. gzip rejects setuid and setgid files even
+#. when --force was used. bzip2 doesn't check
+#. for them, but calls fchown() after fchmod(),
+#. and many systems automatically drop setuid
+#. and setgid bits there.
+#.
+#. We accept setuid and setgid files if
+#. --force was used. We drop these bits
+#. explicitly in io_copy_attr().
+#: ../src/xz/file_io.c:491
 #, c-format
 msgid "%s: File has setuid or setgid bit set, skipping"
 msgstr "%s: il file ha il bit setuid o setgid impostato, viene saltato"
 
-#: src/xz/file_io.c:485
+#: ../src/xz/file_io.c:498
 #, c-format
 msgid "%s: File has sticky bit set, skipping"
 msgstr "%s: il file ha lo sticky bit impostato, viene saltato"
 
-#: src/xz/file_io.c:492
+#: ../src/xz/file_io.c:505
 #, c-format
 msgid "%s: Input file has more than one hard link, skipping"
 msgstr "%s: il file di input ha più di un collegamento fisico, viene saltato"
 
-#: src/xz/file_io.c:713
+#: ../src/xz/file_io.c:761
 #, c-format
 msgid "Error restoring the O_APPEND flag to standard output: %s"
 msgstr "Errore nel ripristinare la flag O_APPEND sullo standard output: %s"
 
-#: src/xz/file_io.c:725
+#: ../src/xz/file_io.c:773
 #, c-format
 msgid "%s: Closing the file failed: %s"
 msgstr "%s: chiusura del file non riuscita: %s"
 
-#: src/xz/file_io.c:761 src/xz/file_io.c:945
+#: ../src/xz/file_io.c:809 ../src/xz/file_io.c:1008
 #, c-format
 msgid "%s: Seeking failed when trying to create a sparse file: %s"
 msgstr ""
 "%s: posizionamento non riuscito nel tentativo di creare un file sparso: %s"
 
-#: src/xz/file_io.c:820
+#: ../src/xz/file_io.c:883
 #, c-format
 msgid "%s: Read error: %s"
 msgstr "%s: errore di lettura: %s"
 
-#: src/xz/file_io.c:843
+#: ../src/xz/file_io.c:906
 #, c-format
 msgid "%s: Error seeking the file: %s"
 msgstr "%s: errore nel cercare il file: %s"
 
-#: src/xz/file_io.c:853
+#: ../src/xz/file_io.c:916
 #, c-format
 msgid "%s: Unexpected end of file"
 msgstr "%s: fine del file inaspettata"
 
-#: src/xz/file_io.c:903
+#: ../src/xz/file_io.c:966
 #, c-format
 msgid "%s: Write error: %s"
 msgstr "%s: errore di scrittura: %s"
 
-#: src/xz/hardware.c:100
+#: ../src/xz/hardware.c:101
 msgid "Disabled"
 msgstr "Disabilitato"
 
 #. TRANSLATORS: Test with "xz --info-memory" to see if
 #. the alignment looks nice.
-#: src/xz/hardware.c:119
+#: ../src/xz/hardware.c:120
 msgid "Total amount of physical memory (RAM): "
 msgstr "Quantità totale di memoria fisica (RAM):     "
 
-#: src/xz/hardware.c:121
+#: ../src/xz/hardware.c:122
 msgid "Memory usage limit for compression:    "
 msgstr "Limite utilizzo memoria per la compressione: "
 
-#: src/xz/hardware.c:123
+#: ../src/xz/hardware.c:124
 msgid "Memory usage limit for decompression:  "
 msgstr "Limite utilizzo memoria per l'estrazione:    "
 
 #. TRANSLATORS: Indicates that there is no integrity check.
 #. This string is used in tables, so the width must not
 #. exceed ten columns with a fixed-width font.
-#: src/xz/list.c:62
+#: ../src/xz/list.c:62
 msgid "None"
 msgstr "Nessuno"
 
@@ -215,60 +241,60 @@ msgstr "Nessuno"
 #. strings are used in tables, so the width must not exceed ten
 #. columns with a fixed-width font. It's OK to omit the dash if
 #. you need space for one extra letter, but don't use spaces.
-#: src/xz/list.c:69
+#: ../src/xz/list.c:69
 msgid "Unknown-2"
 msgstr "Sconosc2"
 
-#: src/xz/list.c:70
+#: ../src/xz/list.c:70
 msgid "Unknown-3"
 msgstr "Sconosc3"
 
-#: src/xz/list.c:72
+#: ../src/xz/list.c:72
 msgid "Unknown-5"
 msgstr "Sconosc5"
 
-#: src/xz/list.c:73
+#: ../src/xz/list.c:73
 msgid "Unknown-6"
 msgstr "Sconosc6"
 
-#: src/xz/list.c:74
+#: ../src/xz/list.c:74
 msgid "Unknown-7"
 msgstr "Sconosc7"
 
-#: src/xz/list.c:75
+#: ../src/xz/list.c:75
 msgid "Unknown-8"
 msgstr "Sconosc8"
 
-#: src/xz/list.c:76
+#: ../src/xz/list.c:76
 msgid "Unknown-9"
 msgstr "Sconosc9"
 
-#: src/xz/list.c:78
+#: ../src/xz/list.c:78
 msgid "Unknown-11"
 msgstr "Sconosc11"
 
-#: src/xz/list.c:79
+#: ../src/xz/list.c:79
 msgid "Unknown-12"
 msgstr "Sconosc12"
 
-#: src/xz/list.c:80
+#: ../src/xz/list.c:80
 msgid "Unknown-13"
 msgstr "Sconosc13"
 
-#: src/xz/list.c:81
+#: ../src/xz/list.c:81
 msgid "Unknown-14"
 msgstr "Sconosc14"
 
-#: src/xz/list.c:82
+#: ../src/xz/list.c:82
 msgid "Unknown-15"
 msgstr "Sconosc15"
 
-#: src/xz/list.c:126
+#: ../src/xz/list.c:126
 #, c-format
 msgid "%s: File is empty"
 msgstr "%s: il file è vuoto"
 
-#: src/xz/list.c:131
+#: ../src/xz/list.c:131
 #, c-format
 msgid "%s: Too small to be a valid .xz file"
 msgstr "%s: troppo piccolo per essere un file .xz valido"
@@ -277,49 +303,51 @@ msgstr "%s: troppo piccolo per essere un file .xz valido"
 #. to Ratio, the columns are right aligned. Check and Filename
 #. are left aligned. If you need longer words, it's OK to
 #. use two lines here. Test with "xz -l foo.xz".
-#: src/xz/list.c:603
+#: ../src/xz/list.c:612
 msgid "Strms  Blocks   Compressed Uncompressed  Ratio  Check   Filename"
 msgstr " Strm  Blocc.    Compresso     Estratto  Rapp.  Contr   Nome file"
 
-#: src/xz/list.c:643
+#: ../src/xz/list.c:652
 #, c-format
 msgid "  Streams:            %s\n"
 msgstr "  Stream:               %s\n"
 
-#: src/xz/list.c:645
+#: ../src/xz/list.c:654
 #, c-format
 msgid "  Blocks:             %s\n"
 msgstr "  Blocchi:              %s\n"
 
-#: src/xz/list.c:647
+#: ../src/xz/list.c:656
 #, c-format
 msgid "  Compressed size:    %s\n"
 msgstr "  Dim. compresso:       %s\n"
 
-#: src/xz/list.c:650
+#: ../src/xz/list.c:659
 #, c-format
 msgid "  Uncompressed size:  %s\n"
 msgstr "  Dim. estratto:        %s\n"
 
-#: src/xz/list.c:653
+#: ../src/xz/list.c:662
 #, c-format
 msgid "  Ratio:              %s\n"
 msgstr "  Rapporto:             %s\n"
 
-#: src/xz/list.c:655
+#: ../src/xz/list.c:664
 #, c-format
 msgid "  Check:              %s\n"
 msgstr "  Controllo:            %s\n"
 
-#: src/xz/list.c:656
+#: ../src/xz/list.c:665
 #, c-format
 msgid "  Stream padding:     %s\n"
 msgstr "  Padding dello stream: %s\n"
 
+#. Print information about the Streams.
+#.
 #. TRANSLATORS: The second line is column headings. All except
 #. Check are right aligned; Check is left aligned. Test with
 #. "xz -lv foo.xz".
-#: src/xz/list.c:684
+#: ../src/xz/list.c:693
 msgid ""
 "  Streams:\n"
 "    Stream    Blocks      CompOffset    UncompOffset        CompSize      "
@@ -331,7 +359,7 @@ msgstr ""
 
 #. TRANSLATORS: The second line is column headings. All
 #. except Check are right aligned; Check is left aligned.
-#: src/xz/list.c:739
+#: ../src/xz/list.c:748
 #, c-format
 msgid ""
 "  Blocks:\n"
@@ -349,66 +377,74 @@ msgstr ""
 #. are right aligned. %*s is replaced with 0-120
 #. spaces to make the CheckVal column wide enough.
 #. Test with "xz -lvv foo.xz".
-#: src/xz/list.c:751
+#: ../src/xz/list.c:760
 #, c-format
 msgid "      CheckVal %*s Header  Flags        CompSize    MemUsage  Filters"
 msgstr "      Val.cont %*s Header  Flag       Dim.compr.    Uso mem.  Filtri"
 
-#: src/xz/list.c:829 src/xz/list.c:998
+#: ../src/xz/list.c:838 ../src/xz/list.c:1007
 #, c-format
 msgid "  Memory needed:      %s MiB\n"
 msgstr "  Memoria necessaria:   %s MiB\n"
 
-#: src/xz/list.c:831 src/xz/list.c:1000
+#: ../src/xz/list.c:840 ../src/xz/list.c:1009
 #, c-format
 msgid "  Sizes in headers:   %s\n"
 msgstr "  Dim. negli header:    %s\n"
 
-#: src/xz/list.c:832 src/xz/list.c:1001
+#: ../src/xz/list.c:841 ../src/xz/list.c:1010
 msgid "Yes"
 msgstr "Sì"
 
-#: src/xz/list.c:832 src/xz/list.c:1001
+#: ../src/xz/list.c:841 ../src/xz/list.c:1010
 msgid "No"
 msgstr "No"
 
+#. Since we print totals only when there are at least two files,
+#. the English message will always use "%s files". But some other
+#. languages need different forms for different plurals so we
+#. have to translate this with ngettext().
+#.
 #. TRANSLATORS: %s is an integer. Only the plural form of this
 #. message is used (e.g. "2 files"). Test with "xz -l foo.xz bar.xz".
-#: src/xz/list.c:977
+#: ../src/xz/list.c:986
 #, c-format
 msgid "%s file\n"
 msgid_plural "%s files\n"
 msgstr[0] "%s file\n"
 msgstr[1] "%s file\n"
 
-#: src/xz/list.c:990
+#: ../src/xz/list.c:999
 msgid "Totals:"
 msgstr "Totali:"
 
-#: src/xz/list.c:991
+#: ../src/xz/list.c:1000
 #, c-format
 msgid "  Number of files:    %s\n"
 msgstr "  Numero di file:       %s\n"
 
-#: src/xz/list.c:1063
+#: ../src/xz/list.c:1072
 msgid "--list works only on .xz files (--format=xz or --format=auto)"
 msgstr "--list funziona solamente con file .xz (--format=xz o --format=auto)"
 
-#: src/xz/list.c:1069
+#: ../src/xz/list.c:1078
 msgid "--list does not support reading from standard input"
 msgstr "--list non è in grado di leggere dallo standard input"
 
-#: src/xz/main.c:89
+#: ../src/xz/main.c:89
 #, c-format
 msgid "%s: Error reading filenames: %s"
 msgstr "%s: errore nel leggere i nomi dei file: %s"
 
-#: src/xz/main.c:96
+#: ../src/xz/main.c:96
 #, c-format
 msgid "%s: Unexpected end of input when reading filenames"
 msgstr "%s: fine dell'input durante la lettura dei nomi dei file non attesa"
 
-#: src/xz/main.c:120
+#. A null character was found when using --files,
+#. which expects plain text input separated with
+#. newlines.
+#: ../src/xz/main.c:120
 #, c-format
 msgid ""
 "%s: Null character found when reading filenames; maybe you meant to use `--"
@@ -417,11 +453,11 @@ msgstr ""
 "%s: nessun carattere trovato durante la lettura dei nomi dei file; forse si "
 "intendeva usare \"--files0\" invece di \"--files\"?"
 
-#: src/xz/main.c:174
+#: ../src/xz/main.c:174
 msgid "Compression and decompression with --robot are not supported yet."
 msgstr "La compressione e l'estrazione con --robot non sono ancora supportate."
 
-#: src/xz/main.c:231
+#: ../src/xz/main.c:231
 msgid ""
 "Cannot read data from standard input when reading filenames from standard "
 "input"
@@ -433,71 +469,68 @@ msgstr ""
 #. of the line in messages. Usually it becomes "xz: ".
 #. This is a translatable string because French needs
 #. a space before a colon.
-#: src/xz/message.c:733
+#: ../src/xz/message.c:733
 #, c-format
 msgid "%s: "
 msgstr "%s: "
 
-#: src/xz/message.c:796 src/xz/message.c:846
+#: ../src/xz/message.c:796 ../src/xz/message.c:846
 msgid "Internal error (bug)"
 msgstr "Errore interno (bug)"
 
-#: src/xz/message.c:803
+#: ../src/xz/message.c:803
 msgid "Cannot establish signal handlers"
 msgstr "Impossibile stabilire i gestori dei segnali"
 
-#: src/xz/message.c:812
+#: ../src/xz/message.c:812
 msgid "No integrity check; not verifying file integrity"
 msgstr ""
 "Nessun controllo d'integrità; l'integrità del file non viene verificata"
 
-#: src/xz/message.c:815
+#: ../src/xz/message.c:815
 msgid "Unsupported type of integrity check; not verifying file integrity"
 msgstr ""
 "Tipo di controllo di integrità non supportato; l'integrità del file non "
 "viene verificata"
 
-#: src/xz/message.c:822
+#: ../src/xz/message.c:822
 msgid "Memory usage limit reached"
 msgstr "Limite di utilizzo della memoria raggiunto"
 
-#: src/xz/message.c:825
+#: ../src/xz/message.c:825
 msgid "File format not recognized"
 msgstr "Formato di file non riconosciuto"
 
-#: src/xz/message.c:828
+#: ../src/xz/message.c:828
 msgid "Unsupported options"
 msgstr "Opzioni non supportate"
 
-#: src/xz/message.c:831
+#: ../src/xz/message.c:831
 msgid "Compressed data is corrupt"
 msgstr "I dati compressi sono danneggiati"
 
-#: src/xz/message.c:834
+#: ../src/xz/message.c:834
 msgid "Unexpected end of input"
 msgstr "Fine dell'input non attesa"
 
-#: src/xz/message.c:867
-#, c-format
-msgid "%s MiB of memory is required. The limiter is disabled."
-msgstr "%s MiB di memoria sono richiesti. Alcun limite impostato."
-
-#: src/xz/message.c:895
+#: ../src/xz/message.c:885
 #, c-format
 msgid "%s MiB of memory is required. The limit is %s."
 msgstr "%s MiB di memoria sono richiesti. Il limite è %s."
 
-#: src/xz/message.c:1062
+#: ../src/xz/message.c:1052
 #, c-format
 msgid "%s: Filter chain: %s\n"
 msgstr "%s: catena di filtri: %s\n"
 
-#: src/xz/message.c:1072
+#. Print this with V_WARNING instead of V_ERROR to prevent it from
+#. showing up when --quiet has been specified.
+#: ../src/xz/message.c:1062
 #, c-format
 msgid "Try `%s --help' for more information."
 msgstr "Provare \"%s --help\" per maggiori informazioni."
 
-#: src/xz/message.c:1098
+#: ../src/xz/message.c:1088
 #, c-format
 msgid ""
 "Usage: %s [OPTION]... [FILE]...\n"
@@ -508,18 +541,18 @@ msgstr ""
 "Comprime o estrae i FILE nel formato .xz.\n"
 "\n"
 
-#: src/xz/message.c:1105
+#: ../src/xz/message.c:1095
 msgid ""
 "Mandatory arguments to long options are mandatory for short options too.\n"
 msgstr ""
 "Gli argomenti obbligatori per le opzioni lunghe lo sono anche per quelle "
 "brevi.\n"
 
-#: src/xz/message.c:1109
+#: ../src/xz/message.c:1099
 msgid " Operation mode:\n"
 msgstr " Modalità di operazione:\n"
 
-#: src/xz/message.c:1112
+#: ../src/xz/message.c:1102
 msgid ""
 "  -z, --compress      force compression\n"
 "  -d, --decompress    force decompression\n"
@@ -531,7 +564,7 @@ msgstr ""
 "  -t, --test          Verifica l'integrità dei file compressi\n"
 "  -l, --list          Elenca informazioni sui file .xz"
 
-#: src/xz/message.c:1118
+#: ../src/xz/message.c:1108
 msgid ""
 "\n"
 " Operation modifiers:\n"
@@ -539,7 +572,7 @@ msgstr ""
 "\n"
 " Modificatori di operazioni:\n"
 
-#: src/xz/message.c:1121
+#: ../src/xz/message.c:1111
 msgid ""
 "  -k, --keep          keep (don't delete) input files\n"
 "  -f, --force         force overwrite of output file and (de)compress links\n"
@@ -552,7 +585,15 @@ msgstr ""
 "  -c, --stdout        Scrive sullo standard output e non elimina i file di "
 "input"
 
-#: src/xz/message.c:1127
+#: ../src/xz/message.c:1117
+msgid ""
+"      --single-stream decompress only the first stream, and silently\n"
+"                      ignore possible remaining input data"
+msgstr ""
+"      --single-stream Decomprime solamente il primo stream e ignora\n"
+"                      silenziosamente i restanti dati di input"
+
+#: ../src/xz/message.c:1120
 msgid ""
 "      --no-sparse     do not create sparse files when decompressing\n"
 "  -S, --suffix=.SUF   use the suffix `.SUF' on compressed files\n"
@@ -572,7 +613,7 @@ msgstr ""
 "                      di newline\n"
 "      --files0=[FILE] Come --files ma usa il carattere null come terminatore"
 
-#: src/xz/message.c:1135
+#: ../src/xz/message.c:1129
 msgid ""
 "\n"
 " Basic file format and compression options:\n"
@@ -580,7 +621,7 @@ msgstr ""
 "\n"
 " Formato file di base e opzioni di compressione:\n"
 
-#: src/xz/message.c:1137
+#: ../src/xz/message.c:1131
 msgid ""
 "  -F, --format=FMT    file format to encode or decode; possible values are\n"
 "                      `auto' (default), `xz', `lzma', and `raw'\n"
@@ -595,7 +636,7 @@ msgstr ""
 "attenzione),\n"
 "                      \"crc32\", \"crc64\" (predefinito) o \"sha256\""
 
-#: src/xz/message.c:1144
+#: ../src/xz/message.c:1138
 msgid ""
 "  -0 ... -9           compression preset; default is 6; take compressor "
 "*and*\n"
@@ -608,7 +649,7 @@ msgstr ""
 "prima\n"
 "                      di usare 7-9"
 
-#: src/xz/message.c:1148
+#: ../src/xz/message.c:1142
 msgid ""
 "  -e, --extreme       try to improve compression ratio by using more CPU "
 "time;\n"
@@ -619,7 +660,17 @@ msgstr ""
 "di\n"
 "                      memoria in fase di estrazione"
 
-#: src/xz/message.c:1153
+#: ../src/xz/message.c:1147
+msgid ""
+"      --block-size=SIZE\n"
+"                      when compressing to the .xz format, start a new block\n"
+"                      after every SIZE bytes of input; 0=disabled (default)"
+msgstr ""
+"      --block-size=DIM \n"
+"                      Comprimendo nel formato .zx, comincia un nuovo blocco\n"
+"                      dopo DIM byte di input; 0=disabilitato (predefinito)"
+
+#: ../src/xz/message.c:1151
 #, no-c-format
 msgid ""
 "      --memlimit-compress=LIMIT\n"
@@ -637,7 +688,7 @@ msgstr ""
 "byte,\n"
 "                      % della memoria RAM oppure 0 per il valore predefinito"
 
-#: src/xz/message.c:1160
+#: ../src/xz/message.c:1158
 msgid ""
 "      --no-adjust     if compression settings exceed the memory usage "
 "limit,\n"
@@ -649,7 +700,7 @@ msgstr ""
 "                      utilizzo della memoria, lancia un errore invece di\n"
 "                      utilizzare valori più piccoli"
 
-#: src/xz/message.c:1166
+#: ../src/xz/message.c:1164
 msgid ""
 "\n"
 " Custom filter chain for compression (alternative for using presets):"
@@ -658,7 +709,7 @@ msgstr ""
 " Catena di filtri personalizzati per la compressione (alternative per\n"
 " l'utilizzo di preset):"
 
-#: src/xz/message.c:1175
+#: ../src/xz/message.c:1173
 msgid ""
 "\n"
 "  --lzma1[=OPTS]      LZMA1 or LZMA2; OPTS is a comma-separated list of zero "
@@ -701,7 +752,7 @@ msgstr ""
 "0=automatica\n"
 "                                   (predefinito)"
 
-#: src/xz/message.c:1190
+#: ../src/xz/message.c:1188
 msgid ""
 "\n"
 "  --x86[=OPTS]        x86 BCJ filter (32-bit and 64-bit)\n"
@@ -724,7 +775,7 @@ msgstr ""
 "                      start=NUM Offset iniziale per le conversioni\n"
 "                                (predefinito=0)"
 
-#: src/xz/message.c:1202
+#: ../src/xz/message.c:1200
 msgid ""
 "\n"
 "  --delta[=OPTS]      Delta filter; valid OPTS (valid values; default):\n"
@@ -736,7 +787,7 @@ msgstr ""
 "                      dist=NUM   Distanza tra byte sottratti\n"
 "                                 gli uni dagli altri (1-256; 1)"
 
-#: src/xz/message.c:1210
+#: ../src/xz/message.c:1208
 msgid ""
 "\n"
 " Other options:\n"
@@ -744,7 +795,7 @@ msgstr ""
 "\n"
 " Altre opzioni:\n"
 
-#: src/xz/message.c:1213
+#: ../src/xz/message.c:1211
 msgid ""
 "  -q, --quiet         suppress warnings; specify twice to suppress errors "
 "too\n"
@@ -757,16 +808,16 @@ msgstr ""
 "ancora\n"
 "                      più prolisso"
 
-#: src/xz/message.c:1218
+#: ../src/xz/message.c:1216
 msgid "  -Q, --no-warn       make warnings not affect the exit status"
 msgstr "  -Q, --no-warn       Gli avvisi non influenzano lo stato d'uscita"
 
-#: src/xz/message.c:1220
+#: ../src/xz/message.c:1218
 msgid ""
 "      --robot         use machine-parsable messages (useful for scripts)"
 msgstr "      --robot         Usa messaggi analizzabili (utile per gli script)"
 
-#: src/xz/message.c:1223
+#: ../src/xz/message.c:1221
 msgid ""
 "      --info-memory   display the total amount of RAM and the currently "
 "active\n"
@@ -776,7 +827,7 @@ msgstr ""
 "attuale\n"
 "                      attivo di utilizzo della memore ed esce"
 
-#: src/xz/message.c:1226
+#: ../src/xz/message.c:1224
 msgid ""
 "  -h, --help          display the short help (lists only the basic options)\n"
 "  -H, --long-help     display this long help and exit"
@@ -784,7 +835,7 @@ msgstr ""
 "  -h, --help          Stampa l'aiuto breve (elenca solo le opzioni di base)\n"
 "  -H, --long-help     Stampa questo lungo aiuto ed esce"
 
-#: src/xz/message.c:1230
+#: ../src/xz/message.c:1228
 msgid ""
 "  -h, --help          display this short help and exit\n"
 "  -H, --long-help     display the long help (lists also the advanced options)"
@@ -792,11 +843,11 @@ msgstr ""
 "  -h, --help          Stampa questo breve aiuto ed esce\n"
 "  -H, --long-help     Stampa l'aiuto lungo (elenca anche le opzioni avanzate)"
 
-#: src/xz/message.c:1235
+#: ../src/xz/message.c:1233
 msgid "  -V, --version       display the version number and exit"
 msgstr "  -V, --version       Stampa il numero della versione ed esce"
 
-#: src/xz/message.c:1237
+#: ../src/xz/message.c:1235
 msgid ""
 "\n"
 "With no FILE, or when FILE is -, read standard input.\n"
@@ -808,51 +859,51 @@ msgstr ""
 #. for this package. Please add _another line_ saying
 #. "Report translation bugs to <...>\n" with the email or WWW
 #. address for translation bugs. Thanks.
-#: src/xz/message.c:1243
+#: ../src/xz/message.c:1241
 #, c-format
 msgid "Report bugs to <%s> (in English or Finnish).\n"
 msgstr ""
 "Segnalare i bug a <%s> (in inglese o finlandese).\n"
 "Segnalare i bug di traduzione a <tp@lists.linux.it>.\n"
 
-#: src/xz/message.c:1245
+#: ../src/xz/message.c:1243
 #, c-format
 msgid "%s home page: <%s>\n"
 msgstr "Sito web di %s: <%s>\n"
 
-#: src/xz/options.c:86
+#: ../src/xz/options.c:86
 #, c-format
 msgid "%s: Options must be `name=value' pairs separated with commas"
 msgstr ""
 "%s: le opzioni devono essere coppie \"nome=valore\" separate da virgole"
 
-#: src/xz/options.c:93
+#: ../src/xz/options.c:93
 #, c-format
 msgid "%s: Invalid option name"
 msgstr "%s: nome opzione non valido"
 
-#: src/xz/options.c:113
+#: ../src/xz/options.c:113
 #, c-format
 msgid "%s: Invalid option value"
 msgstr "%s: valore dell'opzione non valido"
 
-#: src/xz/options.c:247
+#: ../src/xz/options.c:247
 #, c-format
 msgid "Unsupported LZMA1/LZMA2 preset: %s"
 msgstr "Preset LZMA/LZMA2 non supportato: %s"
 
-#: src/xz/options.c:355
+#: ../src/xz/options.c:355
 msgid "The sum of lc and lp must not exceed 4"
 msgstr "La somma di lc e lp non deve superare 4"
 
-#: src/xz/options.c:359
+#: ../src/xz/options.c:359
 #, c-format
 msgid "The selected match finder requires at least nice=%<PRIu32>"
 msgstr ""
 "Lo strumento per cercare corrispondenze selezionato richiede almeno nice="
 "%<PRIu32>"
 
-#: src/xz/suffix.c:101 src/xz/suffix.c:194
+#: ../src/xz/suffix.c:133 ../src/xz/suffix.c:258
 #, c-format
 msgid ""
 "%s: With --format=raw, --suffix=.SUF is required unless writing to stdout"
@@ -860,59 +911,59 @@ msgstr ""
 "%s: con --format=raw, --suffix=.SUF è richiesto a meno che non si scriva "
 "sullo stdout"
 
-#: src/xz/suffix.c:121
+#: ../src/xz/suffix.c:164
 #, c-format
 msgid "%s: Filename has an unknown suffix, skipping"
 msgstr "%s: il nome del file ha un suffisso sconosciuto, viene saltato"
 
-#: src/xz/suffix.c:175 src/xz/suffix.c:184
+#: ../src/xz/suffix.c:185
 #, c-format
 msgid "%s: File already has `%s' suffix, skipping"
 msgstr "%s: il file ha già il suffisso \"%s\", viene saltato"
 
-#: src/xz/suffix.c:235
+#: ../src/xz/suffix.c:393
 #, c-format
 msgid "%s: Invalid filename suffix"
 msgstr "%s: suffisso del nome del file non valido"
 
-#: src/xz/util.c:61
+#: ../src/xz/util.c:61
 #, c-format
 msgid "%s: Value is not a non-negative decimal integer"
 msgstr "%s: il valore non è un numero intero decimale non-negativo"
 
-#: src/xz/util.c:103
+#: ../src/xz/util.c:103
 #, c-format
 msgid "%s: Invalid multiplier suffix"
 msgstr "%s: suffisso del moltiplicatore non valido"
 
-#: src/xz/util.c:105
+#: ../src/xz/util.c:105
 msgid "Valid suffixes are `KiB' (2^10), `MiB' (2^20), and `GiB' (2^30)."
 msgstr ""
 "I suffissi validi sono \"KiB\" (2^10), \"MiB\" (2^20), e \"GiB\" (2^30)."
 
-#: src/xz/util.c:122
+#: ../src/xz/util.c:122
 #, c-format
 msgid "Value of the option `%s' must be in the range [%<PRIu64>, %<PRIu64>]"
 msgstr ""
 "Il valore dell'opzione \"%s\" deve essere nell'intervallo [%<PRIu64>, "
 "%<PRIu64>]"
 
-#: src/xz/util.c:247
+#: ../src/xz/util.c:247
 msgid "Empty filename, skipping"
 msgstr "Nome file vuoto, viene saltato"
 
-#: src/xz/util.c:261
+#: ../src/xz/util.c:261
 msgid "Compressed data cannot be read from a terminal"
 msgstr "I dati compressi non possono essere letti da un terminale"
 
-#: src/xz/util.c:274
+#: ../src/xz/util.c:274
 msgid "Compressed data cannot be written to a terminal"
 msgstr "I dati compressi non possono essere scritti ad un terminale"
 
-#: src/common/tuklib_exit.c:39
+#: ../src/common/tuklib_exit.c:39
 msgid "Writing to standard output failed"
 msgstr "Scrittura sullo standard ouput non riuscita"
 
-#: src/common/tuklib_exit.c:42
+#: ../src/common/tuklib_exit.c:42
 msgid "Unknown error"
 msgstr "Errore sconosciuto"

po/pl.po

@@ -4,9 +4,9 @@
 #
 msgid ""
 msgstr ""
-"Project-Id-Version: xz 5.0.2\n"
+"Project-Id-Version: xz 5.1.1\n"
 "Report-Msgid-Bugs-To: lasse.collin@tukaani.org\n"
-"POT-Creation-Date: 2012-05-29 13:50+0300\n"
+"POT-Creation-Date: 2012-05-29 13:59+0300\n"
 "PO-Revision-Date: 2012-05-29 18:15+0200\n"
 "Last-Translator: Jakub Bogusz <qboosh@pld-linux.org>\n"
 "Language-Team: Polish <translation-team-pl@lists.sourceforge.net>\n"
@@ -16,59 +16,69 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=3; plural=n==1 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2;\n"
 
-#: src/xz/args.c:333
+#: src/xz/args.c:338
 #, c-format
 msgid "%s: Unknown file format type"
 msgstr "%s: Nieznany typ formatu pliku"
 
-#: src/xz/args.c:356 src/xz/args.c:364
+#: src/xz/args.c:361 src/xz/args.c:369
 #, c-format
 msgid "%s: Unsupported integrity check type"
 msgstr "%s: Nieobsługiwany typ kontroli spójności"
 
-#: src/xz/args.c:382
+#: src/xz/args.c:396
 msgid "Only one file can be specified with `--files' or `--files0'."
 msgstr "Wraz z opcją `--files' lub `--files0' można podać tylko jeden plik."
 
-#: src/xz/args.c:445
+#: src/xz/args.c:459
 #, c-format
 msgid "The environment variable %s contains too many arguments"
 msgstr "Zmienna środowiskowa %s zawiera zbyt dużo argumentów"
 
-#: src/xz/coder.c:95
+#: src/xz/coder.c:105
 msgid "Maximum number of filters is four"
 msgstr "Maksymalna liczba filtrów to cztery"
 
-#: src/xz/coder.c:108
+#: src/xz/coder.c:118
 msgid "Memory usage limit is too low for the given filter setup."
 msgstr "Limit użycia pamięci jest zbyt mały dla podanej konfiguracji filtra."
 
-#: src/xz/coder.c:129
+#: src/xz/coder.c:148
 msgid "Using a preset in raw mode is discouraged."
 msgstr "Użycie ustawień predefiniowanych w trybie surowym jest odradzane."
 
-#: src/xz/coder.c:131
+#: src/xz/coder.c:150
 msgid "The exact options of the presets may vary between software versions."
 msgstr "Dokładne opcje ustawień predefiniowanych mogą różnić się między wersjami oprogramowania."
 
-#: src/xz/coder.c:157
+#: src/xz/coder.c:176
 msgid "The .lzma format supports only the LZMA1 filter"
 msgstr "Format .lzma obsługuje tylko filtr LZMA1"
 
-#: src/xz/coder.c:165
+#: src/xz/coder.c:184
 msgid "LZMA1 cannot be used with the .xz format"
 msgstr "LZMA1 nie może być używany z formatem .xz"
 
-#: src/xz/coder.c:182
+#: src/xz/coder.c:203
+#, c-format
+msgid "Using up to %<PRIu32> threads."
+msgstr "Maksymalna liczba używanych wątków: %<PRIu32>."
+
+#: src/xz/coder.c:216
 msgid "Unsupported filter chain or filter options"
 msgstr "Nieobsługiwany łańcuch filtrów lub opcje filtra"
 
-#: src/xz/coder.c:190
+#: src/xz/coder.c:224
 #, c-format
 msgid "Decompression will need %s MiB of memory."
 msgstr "Dekompresja będzie wymagała %s MiB pamięci."
 
-#: src/xz/coder.c:247
+#: src/xz/coder.c:259
+#, c-format
+msgid "Adjusted the number of threads from %s to %s to not exceed the memory usage limit of %s MiB"
+msgstr "Skorygowano liczbę wątków z %s do %s, aby nie przekroczyć limitu użycia pamięci %s MiB"
+
+#: src/xz/coder.c:313
 #, c-format
 msgid "Adjusted LZMA%c dictionary size from %s MiB to %s MiB to not exceed the memory usage limit of %s MiB"
 msgstr "Skorygowano rozmiar słownika LZMA%c z %s MiB do %s MiB aby nie przekroczyć limitu użycia pamięci %s MiB"
@@ -83,118 +93,118 @@ msgstr "Skorygowano rozmiar słownika LZMA%c z %s MiB do %s MiB aby nie przekroc
 #. it is possible that the user has put a new file in place
 #. of the original file, and in that case it obviously
 #. shouldn't be removed.
-#: src/xz/file_io.c:137
+#: src/xz/file_io.c:136
 #, c-format
 msgid "%s: File seems to have been moved, not removing"
 msgstr "%s: Plik wygląda na przeniesiony, nie zostanie usunięty"
 
-#: src/xz/file_io.c:144 src/xz/file_io.c:589
+#: src/xz/file_io.c:143 src/xz/file_io.c:635
 #, c-format
 msgid "%s: Cannot remove: %s"
 msgstr "%s: Nie można usunąć: %s"
 
-#: src/xz/file_io.c:169
+#: src/xz/file_io.c:168
 #, c-format
 msgid "%s: Cannot set the file owner: %s"
 msgstr "%s: Nie można ustawić właściciela pliku: %s"
 
-#: src/xz/file_io.c:175
+#: src/xz/file_io.c:174
 #, c-format
 msgid "%s: Cannot set the file group: %s"
 msgstr "%s: Nie można ustawić grupy pliku: %s"
 
-#: src/xz/file_io.c:194
+#: src/xz/file_io.c:193
 #, c-format
 msgid "%s: Cannot set the file permissions: %s"
 msgstr "%s: Nie można ustawić uprawnień pliku: %s"
 
-#: src/xz/file_io.c:337 src/xz/file_io.c:420
+#: src/xz/file_io.c:340 src/xz/file_io.c:423
 #, c-format
 msgid "%s: Is a symbolic link, skipping"
 msgstr "%s: Jest dowiązaniem symbolicznym, pominięto"
 
-#: src/xz/file_io.c:455
+#: src/xz/file_io.c:468
 #, c-format
 msgid "%s: Is a directory, skipping"
 msgstr "%s: Jest katalogiem, pominięto"
 
-#: src/xz/file_io.c:461
+#: src/xz/file_io.c:474
 #, c-format
 msgid "%s: Not a regular file, skipping"
 msgstr "%s: Nie jest zwykłym plikiem, pominięto"
 
-#: src/xz/file_io.c:478
+#: src/xz/file_io.c:491
 #, c-format
 msgid "%s: File has setuid or setgid bit set, skipping"
 msgstr "%s: Plik ma ustawiony bit setuid lub setgid, pominięto"
 
-#: src/xz/file_io.c:485
+#: src/xz/file_io.c:498
 #, c-format
 msgid "%s: File has sticky bit set, skipping"
 msgstr "%s: Plik ma ustawiony bit sticky, pominięto"
 
-#: src/xz/file_io.c:492
+#: src/xz/file_io.c:505
 #, c-format
 msgid "%s: Input file has more than one hard link, skipping"
 msgstr "%s: Plik wejściowy ma więcej niż jedno dowiązanie zwykłe, pominięto"
 
-#: src/xz/file_io.c:713
+#: src/xz/file_io.c:761
 #, c-format
 msgid "Error restoring the O_APPEND flag to standard output: %s"
 msgstr "Błąd podczas odtwarzania flagi O_APPEND dla standardowego wyjścia: %s"
 
-#: src/xz/file_io.c:725
+#: src/xz/file_io.c:773
 #, c-format
 msgid "%s: Closing the file failed: %s"
 msgstr "%s: Zamknięcie pliku nie powiodło się: %s"
 
-#: src/xz/file_io.c:761 src/xz/file_io.c:945
+#: src/xz/file_io.c:809 src/xz/file_io.c:1008
 #, c-format
 msgid "%s: Seeking failed when trying to create a sparse file: %s"
 msgstr "%s: Zmiana pozycji nie powiodła się podczas próby utworzenia pliku rzadkiego: %s"
 
-#: src/xz/file_io.c:820
+#: src/xz/file_io.c:883
 #, c-format
 msgid "%s: Read error: %s"
 msgstr "%s: Błąd odczytu: %s"
 
-#: src/xz/file_io.c:843
+#: src/xz/file_io.c:906
 #, c-format
 msgid "%s: Error seeking the file: %s"
 msgstr "%s: Błąd podczas zmiany pozycji w pliku: %s"
 
-#: src/xz/file_io.c:853
+#: src/xz/file_io.c:916
 #, c-format
 msgid "%s: Unexpected end of file"
 msgstr "%s: Nieoczekiwany koniec pliku"
 
-#: src/xz/file_io.c:903
+#: src/xz/file_io.c:966
 #, c-format
 msgid "%s: Write error: %s"
 msgstr "%s: Błąd zapisu: %s"
 
-#: src/xz/hardware.c:100
+#: src/xz/hardware.c:101
 msgid "Disabled"
 msgstr "Wyłączony"
 
 #. TRANSLATORS: Test with "xz --info-memory" to see if
 #. the alignment looks nice.
-#: src/xz/hardware.c:119
+#: src/xz/hardware.c:120
 msgid "Total amount of physical memory (RAM): "
 msgstr "Całkowita ilość pamięci fizycznej (RAM): "
 
-#: src/xz/hardware.c:121
+#: src/xz/hardware.c:122
 msgid "Memory usage limit for compression:    "
 msgstr "Limit użycia pamięci dla kompresji:      "
 
-#: src/xz/hardware.c:123
+#: src/xz/hardware.c:124
 msgid "Memory usage limit for decompression:  "
 msgstr "Limit użycia pamięci dla dekompresji:    "
 
 #. TRANSLATORS: Indicates that there is no integrity check.
 #. This string is used in tables, so the width must not
 #. exceed ten columns with a fixed-width font.
-#: src/xz/list.c:62
+#: src/xz/list.c:65
 msgid "None"
 msgstr "Brak"
 
@@ -203,60 +213,60 @@ msgstr "Brak"
 #. strings are used in tables, so the width must not exceed ten
 #. columns with a fixed-width font. It's OK to omit the dash if
 #. you need space for one extra letter, but don't use spaces.
-#: src/xz/list.c:69
+#: src/xz/list.c:72
 msgid "Unknown-2"
 msgstr "Nieznany-2"
 
-#: src/xz/list.c:70
+#: src/xz/list.c:73
 msgid "Unknown-3"
 msgstr "Nieznany-3"
 
-#: src/xz/list.c:72
+#: src/xz/list.c:75
 msgid "Unknown-5"
 msgstr "Nieznany-5"
 
-#: src/xz/list.c:73
+#: src/xz/list.c:76
 msgid "Unknown-6"
 msgstr "Nieznany-6"
 
-#: src/xz/list.c:74
+#: src/xz/list.c:77
 msgid "Unknown-7"
 msgstr "Nieznany-7"
 
-#: src/xz/list.c:75
+#: src/xz/list.c:78
 msgid "Unknown-8"
 msgstr "Nieznany-8"
 
-#: src/xz/list.c:76
+#: src/xz/list.c:79
 msgid "Unknown-9"
 msgstr "Nieznany-9"
 
-#: src/xz/list.c:78
+#: src/xz/list.c:81
 msgid "Unknown-11"
 msgstr "Nieznany11"
 
-#: src/xz/list.c:79
+#: src/xz/list.c:82
 msgid "Unknown-12"
 msgstr "Nieznany12"
 
-#: src/xz/list.c:80
+#: src/xz/list.c:83
 msgid "Unknown-13"
 msgstr "Nieznany13"
 
-#: src/xz/list.c:81
+#: src/xz/list.c:84
 msgid "Unknown-14"
 msgstr "Nieznany14"
 
-#: src/xz/list.c:82
+#: src/xz/list.c:85
 msgid "Unknown-15"
 msgstr "Nieznany15"
 
-#: src/xz/list.c:126
+#: src/xz/list.c:153
 #, c-format
 msgid "%s: File is empty"
 msgstr "%s: Plik jest pusty"
 
-#: src/xz/list.c:131
+#: src/xz/list.c:158
 #, c-format
 msgid "%s: Too small to be a valid .xz file"
 msgstr "%s: Za mały na poprawny plik .xz"
@@ -265,41 +275,41 @@ msgstr "%s: Za mały na poprawny plik .xz"
 #. to Ratio, the columns are right aligned. Check and Filename
 #. are left aligned. If you need longer words, it's OK to
 #. use two lines here. Test with "xz -l foo.xz".
-#: src/xz/list.c:603
+#: src/xz/list.c:645
 msgid "Strms  Blocks   Compressed Uncompressed  Ratio  Check   Filename"
 msgstr "Strum.  Bloki    Spakowany  Rozpakowany  Wsp.  Kontrola Nazwa pliku"
 
-#: src/xz/list.c:643
+#: src/xz/list.c:685
 #, c-format
 msgid "  Streams:            %s\n"
 msgstr "  Strumienie:            %s\n"
 
-#: src/xz/list.c:645
+#: src/xz/list.c:687
 #, c-format
 msgid "  Blocks:             %s\n"
 msgstr "  Bloki:                 %s\n"
 
-#: src/xz/list.c:647
+#: src/xz/list.c:689
 #, c-format
 msgid "  Compressed size:    %s\n"
 msgstr "  Rozmiar spakowany:     %s\n"
 
-#: src/xz/list.c:650
+#: src/xz/list.c:692
 #, c-format
 msgid "  Uncompressed size:  %s\n"
 msgstr "  Rozmiar rozpakowany:   %s\n"
 
-#: src/xz/list.c:653
+#: src/xz/list.c:695
 #, c-format
 msgid "  Ratio:              %s\n"
 msgstr "  Współczynnik:          %s\n"
 
-#: src/xz/list.c:655
+#: src/xz/list.c:697
 #, c-format
 msgid "  Check:              %s\n"
 msgstr "  Kontrola spójności:    %s\n"
 
-#: src/xz/list.c:656
+#: src/xz/list.c:698
 #, c-format
 msgid "  Stream padding:     %s\n"
 msgstr "  Wyrównanie strumienia: %s\n"
@@ -307,7 +317,7 @@ msgstr "  Wyrównanie strumienia: %s\n"
 #. TRANSLATORS: The second line is column headings. All except
 #. Check are right aligned; Check is left aligned. Test with
 #. "xz -lv foo.xz".
-#: src/xz/list.c:684
+#: src/xz/list.c:726
 msgid ""
 "  Streams:\n"
 "    Stream    Blocks      CompOffset    UncompOffset        CompSize      UncompSize  Ratio  Check      Padding"
@@ -317,7 +327,7 @@ msgstr ""
 
 #. TRANSLATORS: The second line is column headings. All
 #. except Check are right aligned; Check is left aligned.
-#: src/xz/list.c:739
+#: src/xz/list.c:781
 #, c-format
 msgid ""
 "  Blocks:\n"
@@ -333,32 +343,37 @@ msgstr ""
 #. are right aligned. %*s is replaced with 0-120
 #. spaces to make the CheckVal column wide enough.
 #. Test with "xz -lvv foo.xz".
-#: src/xz/list.c:751
+#: src/xz/list.c:793
 #, c-format
 msgid "      CheckVal %*s Header  Flags        CompSize    MemUsage  Filters"
 msgstr "   S.kontr. %*sNagłówek Flagi     Rozm. spak.  Uż.pamięci  Filtry"
 
-#: src/xz/list.c:829 src/xz/list.c:998
+#: src/xz/list.c:871 src/xz/list.c:1046
 #, c-format
 msgid "  Memory needed:      %s MiB\n"
 msgstr "  Wymagana pamięć:       %s MiB\n"
 
-#: src/xz/list.c:831 src/xz/list.c:1000
+#: src/xz/list.c:873 src/xz/list.c:1048
 #, c-format
 msgid "  Sizes in headers:   %s\n"
 msgstr "  Rozmiar w nagłówkach:  %s\n"
 
-#: src/xz/list.c:832 src/xz/list.c:1001
+#: src/xz/list.c:874 src/xz/list.c:1049
 msgid "Yes"
 msgstr "Tak"
 
-#: src/xz/list.c:832 src/xz/list.c:1001
+#: src/xz/list.c:874 src/xz/list.c:1049
 msgid "No"
 msgstr "Nie"
 
+#: src/xz/list.c:875 src/xz/list.c:1050
+#, c-format
+msgid "  Minimum XZ Utils version: %s\n"
+msgstr "  Minimalna wersja XZ Utils: %s\n"
+
 #. TRANSLATORS: %s is an integer. Only the plural form of this
 #. message is used (e.g. "2 files"). Test with "xz -l foo.xz bar.xz".
-#: src/xz/list.c:977
+#: src/xz/list.c:1025
 #, c-format
 msgid "%s file\n"
 msgid_plural "%s files\n"
@@ -366,20 +381,20 @@ msgstr[0] "%s plik\n"
 msgstr[1] "%s pliki\n"
 msgstr[2] "%s plików\n"
 
-#: src/xz/list.c:990
+#: src/xz/list.c:1038
 msgid "Totals:"
 msgstr "Sumarycznie:"
 
-#: src/xz/list.c:991
+#: src/xz/list.c:1039
 #, c-format
 msgid "  Number of files:    %s\n"
 msgstr "  Liczba plików:         %s\n"
 
-#: src/xz/list.c:1063
+#: src/xz/list.c:1114
 msgid "--list works only on .xz files (--format=xz or --format=auto)"
 msgstr "--list działa tylko z plikami .xz (--format=xz lub --format=auto)"
 
-#: src/xz/list.c:1069
+#: src/xz/list.c:1120
 msgid "--list does not support reading from standard input"
 msgstr "--list nie obsługuje odczytu ze standardowego wejścia"
 
@@ -524,6 +539,14 @@ msgstr ""
 
 #: src/xz/message.c:1127
 msgid ""
+"      --single-stream decompress only the first stream, and silently\n"
+"                      ignore possible remaining input data"
+msgstr ""
+"      --single-stream dekompresja tylko pierwszego strumienia, ciche\n"
+"                      zignorowanie pozostałych danych wejściowych"
+
+#: src/xz/message.c:1130
+msgid ""
 "      --no-sparse     do not create sparse files when decompressing\n"
 "  -S, --suffix=.SUF   use the suffix `.SUF' on compressed files\n"
 "      --files[=FILE]  read filenames to process from FILE; if FILE is\n"
@@ -538,7 +561,7 @@ msgstr ""
 "                      wejścia; muszą być zakończone znakiem nowej linii\n"
 "      --files0[=PLIK] podobnie do --files, ale znakiem kończącym musi być NUL"
 
-#: src/xz/message.c:1135
+#: src/xz/message.c:1139
 msgid ""
 "\n"
 " Basic file format and compression options:\n"
@@ -546,7 +569,7 @@ msgstr ""
 "\n"
 " Podstawowe opcje formatu pliku i kompresji:\n"
 
-#: src/xz/message.c:1137
+#: src/xz/message.c:1141
 msgid ""
 "  -F, --format=FMT    file format to encode or decode; possible values are\n"
 "                      `auto' (default), `xz', `lzma', and `raw'\n"
@@ -558,7 +581,7 @@ msgstr ""
 "  -C, --check=TEST    typ kontroli spójności: `none' (ostrożnie!),\n"
 "                      `crc32', `crc64' (domyślny) lub `sha256'"
 
-#: src/xz/message.c:1144
+#: src/xz/message.c:1148
 msgid ""
 "  -0 ... -9           compression preset; default is 6; take compressor *and*\n"
 "                      decompressor memory usage into account before using 7-9!"
@@ -567,7 +590,7 @@ msgstr ""
 "                      użyciem wartości 7-9 należy wziąć pod uwagę wykorzystanie\n"
 "                      pamięci przy kompresji *oraz* dekompresji!"
 
-#: src/xz/message.c:1148
+#: src/xz/message.c:1152
 msgid ""
 "  -e, --extreme       try to improve compression ratio by using more CPU time;\n"
 "                      does not affect decompressor memory requirements"
@@ -576,7 +599,17 @@ msgstr ""
 "                      ilości czasu procesora; nie wpływa na wymagania\n"
 "                      pamięciowe dekompresora"
 
-#: src/xz/message.c:1153
+#: src/xz/message.c:1157
+msgid ""
+"      --block-size=SIZE\n"
+"                      when compressing to the .xz format, start a new block\n"
+"                      after every SIZE bytes of input; 0=disabled (default)"
+msgstr ""
+"      --block-size=LICZBA\n"
+"                      przy kompresji do formatu .xz: rozpoczynanie nowego bloku\n"
+"                      po każdej LICZBIE bajtów wejścia; 0=wyłączone (domyślne)"
+
+#: src/xz/message.c:1161
 #, no-c-format
 msgid ""
 "      --memlimit-compress=LIMIT\n"
@@ -592,7 +625,7 @@ msgstr ""
 "                      dekompresji lub obu; LIMIT jest w bajtach, % RAM lub 0\n"
 "                      dla limitów domyślnych"
 
-#: src/xz/message.c:1160
+#: src/xz/message.c:1168
 msgid ""
 "      --no-adjust     if compression settings exceed the memory usage limit,\n"
 "                      give an error instead of adjusting the settings downwards"
@@ -601,7 +634,7 @@ msgstr ""
 "                      pamięci, zostanie zgłoszony błąd zamiast zmniejszania\n"
 "                      ustawień"
 
-#: src/xz/message.c:1166
+#: src/xz/message.c:1174
 msgid ""
 "\n"
 " Custom filter chain for compression (alternative for using presets):"
@@ -609,7 +642,7 @@ msgstr ""
 "\n"
 " Łańcuch własnych filtrów do kompresji (alternatywa do używania -0 .. -9):"
 
-#: src/xz/message.c:1175
+#: src/xz/message.c:1183
 msgid ""
 "\n"
 "  --lzma1[=OPTS]      LZMA1 or LZMA2; OPTS is a comma-separated list of zero or\n"
@@ -638,7 +671,7 @@ msgstr ""
 "                        mf=NAZWA   dopasowywacz (hc3, hc4, bt2, bt3, bt4; bt4)\n"
 "                        depth=ILE  maks. głębokość szukania; 0=auto (domyślne)"
 
-#: src/xz/message.c:1190
+#: src/xz/message.c:1198
 msgid ""
 "\n"
 "  --x86[=OPTS]        x86 BCJ filter (32-bit and 64-bit)\n"
@@ -660,7 +693,7 @@ msgstr ""
 "                      Poprawne OPCJE dla wszystkich filtrów BCJ:\n"
 "                        start=ILE  offset początku konwersji (domyślnie=0)"
 
-#: src/xz/message.c:1202
+#: src/xz/message.c:1210
 msgid ""
 "\n"
 "  --delta[=OPTS]      Delta filter; valid OPTS (valid values; default):\n"
@@ -672,7 +705,7 @@ msgstr ""
 "                        dist=ILE   odległość między bajtami odejmowanymi od\n"
 "                                   siebie (1-256; 1)"
 
-#: src/xz/message.c:1210
+#: src/xz/message.c:1218
 msgid ""
 "\n"
 " Other options:\n"
@@ -680,7 +713,7 @@ msgstr ""
 "\n"
 " Inne opcje:\n"
 
-#: src/xz/message.c:1213
+#: src/xz/message.c:1221
 msgid ""
 "  -q, --quiet         suppress warnings; specify twice to suppress errors too\n"
 "  -v, --verbose       be verbose; specify twice for even more verbose"
@@ -688,15 +721,15 @@ msgstr ""
 "  -q, --quiet         pominięcie ostrzeżeń; dwukrotne podanie pomija też błędy\n"
 "  -v, --verbose       więcej informacji; dwukrotne podanie to jeszcze więcej"
 
-#: src/xz/message.c:1218
+#: src/xz/message.c:1226
 msgid "  -Q, --no-warn       make warnings not affect the exit status"
 msgstr "  -Q, --no-warn       ostrzeżenia nie mają wpływu na status zakończenia"
 
-#: src/xz/message.c:1220
+#: src/xz/message.c:1228
 msgid "      --robot         use machine-parsable messages (useful for scripts)"
 msgstr "      --robot         komunikaty w formacie dla maszyny (do skryptów)"
 
-#: src/xz/message.c:1223
+#: src/xz/message.c:1231
 msgid ""
 "      --info-memory   display the total amount of RAM and the currently active\n"
 "                      memory usage limits, and exit"
@@ -704,7 +737,7 @@ msgstr ""
 "      --info-memory   wyświetlenie całkowitej ilości pamięci RAM oraz aktualnie\n"
 "                      aktywnych limitów pamięci i zakończenie pracy"
 
-#: src/xz/message.c:1226
+#: src/xz/message.c:1234
 msgid ""
 "  -h, --help          display the short help (lists only the basic options)\n"
 "  -H, --long-help     display this long help and exit"
@@ -712,7 +745,7 @@ msgstr ""
 "  -h, --help          wyświetlenie krótkiego opisu (tylko podstawowe opcje)\n"
 "  -H, --long-help     wyświetlenie tego długiego opisu i zakończenie"
 
-#: src/xz/message.c:1230
+#: src/xz/message.c:1238
 msgid ""
 "  -h, --help          display this short help and exit\n"
 "  -H, --long-help     display the long help (lists also the advanced options)"
@@ -720,11 +753,11 @@ msgstr ""
 "  -h, --help          wyświetlenie tego krótkiego opisu i zakończenie\n"
 "  -H, --long-help     wyświetlenie długiego opisu (także opcje zaawansowane)"
 
-#: src/xz/message.c:1235
+#: src/xz/message.c:1243
 msgid "  -V, --version       display the version number and exit"
 msgstr "  -V, --version       wyświetlenie informacji o wersji i zakończenie"
 
-#: src/xz/message.c:1237
+#: src/xz/message.c:1245
 msgid ""
 "\n"
 "With no FILE, or when FILE is -, read standard input.\n"
@@ -736,7 +769,7 @@ msgstr ""
 #. for this package. Please add _another line_ saying
 #. "Report translation bugs to <...>\n" with the email or WWW
 #. address for translation bugs. Thanks.
-#: src/xz/message.c:1243
+#: src/xz/message.c:1251
 #, c-format
 msgid "Report bugs to <%s> (in English or Finnish).\n"
 msgstr ""
@@ -745,7 +778,7 @@ msgstr ""
 "Błędy w tłumaczeniu prosimy zgłaszać na adres\n"
 "<translation-team-pl@lists.sourceforge.net>.\n"
 
-#: src/xz/message.c:1245
+#: src/xz/message.c:1253
 #, c-format
 msgid "%s home page: <%s>\n"
 msgstr "Strona domowa %s: <%s>\n"
@@ -779,22 +812,22 @@ msgstr "Suma lc i lp nie może przekroczyć 4"
 msgid "The selected match finder requires at least nice=%<PRIu32>"
 msgstr "Wybrany dopasowywacz wymaga przynajmniej nice=%<PRIu32>"
 
-#: src/xz/suffix.c:101 src/xz/suffix.c:194
+#: src/xz/suffix.c:133 src/xz/suffix.c:258
 #, c-format
 msgid "%s: With --format=raw, --suffix=.SUF is required unless writing to stdout"
 msgstr "%s: Przy --format=raw i zapisie do pliku wymagana jest opcja --suffix=.ROZ"
 
-#: src/xz/suffix.c:121
+#: src/xz/suffix.c:164
 #, c-format
 msgid "%s: Filename has an unknown suffix, skipping"
 msgstr "%s: Nazwa pliku ma nieznane rozszerzenie, pominięto"
 
-#: src/xz/suffix.c:175 src/xz/suffix.c:184
+#: src/xz/suffix.c:185
 #, c-format
 msgid "%s: File already has `%s' suffix, skipping"
 msgstr "%s: Plik już ma rozszerzenie `%s', pominięto"
 
-#: src/xz/suffix.c:235
+#: src/xz/suffix.c:393
 #, c-format
 msgid "%s: Invalid filename suffix"
 msgstr "%s: Błędne rozszerzenie nazwy pliku"

src/common/mythread.h

@@ -1,7 +1,7 @@
 ///////////////////////////////////////////////////////////////////////////////
 //
 /// \file       mythread.h
-/// \brief      Wrappers for threads
+/// \brief      Some threading related helper macros and functions
 //
 //  Author:     Lasse Collin
 //
@@ -10,33 +10,510 @@
 //
 ///////////////////////////////////////////////////////////////////////////////
 
+#ifndef MYTHREAD_H
+#define MYTHREAD_H
+
 #include "sysdefs.h"
 
+// If any type of threading is enabled, #define MYTHREAD_ENABLED.
+#if defined(MYTHREAD_POSIX) || defined(MYTHREAD_WIN95) \
+		|| defined(MYTHREAD_VISTA)
+#	define MYTHREAD_ENABLED 1
+#endif
 
-#ifdef HAVE_PTHREAD
-#	include <pthread.h>
 
-#	define mythread_once(func) \
+#ifdef MYTHREAD_ENABLED
+
+////////////////////////////////////////
+// Shared between all threading types //
+////////////////////////////////////////
+
+// Locks a mutex for a duration of a block.
+//
+// Perform mythread_mutex_lock(&mutex) in the beginning of a block
+// and mythread_mutex_unlock(&mutex) at the end of the block. "break"
+// may be used to unlock the mutex and jump out of the block.
+// mythread_sync blocks may be nested.
+//
+// Example:
+//
+//     mythread_sync(mutex) {
+//         foo();
+//         if (some_error)
+//             break; // Skips bar()
+//         bar();
+//     }
+//
+// At least GCC optimizes the loops completely away so it doesn't slow
+// things down at all compared to plain mythread_mutex_lock(&mutex)
+// and mythread_mutex_unlock(&mutex) calls.
+//
+#define mythread_sync(mutex) mythread_sync_helper1(mutex, __LINE__)
+#define mythread_sync_helper1(mutex, line) mythread_sync_helper2(mutex, line)
+#define mythread_sync_helper2(mutex, line) \
+	for (unsigned int mythread_i_ ## line = 0; \
+			mythread_i_ ## line \
+				? (mythread_mutex_unlock(&(mutex)), 0) \
+				: (mythread_mutex_lock(&(mutex)), 1); \
+			mythread_i_ ## line = 1) \
+		for (unsigned int mythread_j_ ## line = 0; \
+				!mythread_j_ ## line; \
+				mythread_j_ ## line = 1)
+#endif
+
+
+#if !defined(MYTHREAD_ENABLED)
+
+//////////////////
+// No threading //
+//////////////////
+
+// Calls the given function once. This isn't thread safe.
+#define mythread_once(func) \
+do { \
+	static bool once_ = false; \
+	if (!once_) { \
+		func(); \
+		once_ = true; \
+	} \
+} while (0)
+
+
+#if !(defined(_WIN32) && !defined(__CYGWIN__))
+// Use sigprocmask() to set the signal mask in single-threaded programs.
+static inline void
+mythread_sigmask(int how, const sigset_t *restrict set,
+		sigset_t *restrict oset)
+{
+	int ret = sigprocmask(how, set, oset);
+	assert(ret == 0);
+	(void)ret;
+}
+#endif
+
+
+#elif defined(MYTHREAD_POSIX)
+
+////////////////////
+// Using pthreads //
+////////////////////
+
+#include <sys/time.h>
+#include <pthread.h>
+#include <signal.h>
+#include <time.h>
+#include <errno.h>
+
+#define MYTHREAD_RET_TYPE void *
+#define MYTHREAD_RET_VALUE NULL
+
+typedef pthread_t mythread;
+typedef pthread_mutex_t mythread_mutex;
+
+typedef struct {
+	pthread_cond_t cond;
+#ifdef HAVE_CLOCK_GETTIME
+	// Clock ID (CLOCK_REALTIME or CLOCK_MONOTONIC) associated with
+	// the condition variable.
+	clockid_t clk_id;
+#endif
+} mythread_cond;
+
+typedef struct timespec mythread_condtime;
+
+
+// Calls the given function once in a thread-safe way.
+#define mythread_once(func) \
 	do { \
 		static pthread_once_t once_ = PTHREAD_ONCE_INIT; \
 		pthread_once(&once_, &func); \
 	} while (0)
 
-#	define mythread_sigmask(how, set, oset) \
-		pthread_sigmask(how, set, oset)
 
+// Use pthread_sigmask() to set the signal mask in multi-threaded programs.
+// Do nothing on OpenVMS since it lacks pthread_sigmask().
+static inline void
+mythread_sigmask(int how, const sigset_t *restrict set,
+		sigset_t *restrict oset)
+{
+#ifdef __VMS
+	(void)how;
+	(void)set;
+	(void)oset;
 #else
+	int ret = pthread_sigmask(how, set, oset);
+	assert(ret == 0);
+	(void)ret;
+#endif
+}
 
-#	define mythread_once(func) \
+
+// Creates a new thread with all signals blocked. Returns zero on success
+// and non-zero on error.
+static inline int
+mythread_create(mythread *thread, void *(*func)(void *arg), void *arg)
+{
+	sigset_t old;
+	sigset_t all;
+	sigfillset(&all);
+
+	mythread_sigmask(SIG_SETMASK, &all, &old);
+	const int ret = pthread_create(thread, NULL, func, arg);
+	mythread_sigmask(SIG_SETMASK, &old, NULL);
+
+	return ret;
+}
+
+// Joins a thread. Returns zero on success and non-zero on error.
+static inline int
+mythread_join(mythread thread)
+{
+	return pthread_join(thread, NULL);
+}
+
+
+// Initiatlizes a mutex. Returns zero on success and non-zero on error.
+static inline int
+mythread_mutex_init(mythread_mutex *mutex)
+{
+	return pthread_mutex_init(mutex, NULL);
+}
+
+static inline void
+mythread_mutex_destroy(mythread_mutex *mutex)
+{
+	int ret = pthread_mutex_destroy(mutex);
+	assert(ret == 0);
+	(void)ret;
+}
+
+static inline void
+mythread_mutex_lock(mythread_mutex *mutex)
+{
+	int ret = pthread_mutex_lock(mutex);
+	assert(ret == 0);
+	(void)ret;
+}
+
+static inline void
+mythread_mutex_unlock(mythread_mutex *mutex)
+{
+	int ret = pthread_mutex_unlock(mutex);
+	assert(ret == 0);
+	(void)ret;
+}
+
+
+// Initializes a condition variable.
+//
+// Using CLOCK_MONOTONIC instead of the default CLOCK_REALTIME makes the
+// timeout in pthread_cond_timedwait() work correctly also if system time
+// is suddenly changed. Unfortunately CLOCK_MONOTONIC isn't available
+// everywhere while the default CLOCK_REALTIME is, so the default is
+// used if CLOCK_MONOTONIC isn't available.
+//
+// If clock_gettime() isn't available at all, gettimeofday() will be used.
+static inline int
+mythread_cond_init(mythread_cond *mycond)
+{
+#ifdef HAVE_CLOCK_GETTIME
+	// NOTE: HAVE_DECL_CLOCK_MONOTONIC is always defined to 0 or 1.
+#	if defined(HAVE_PTHREAD_CONDATTR_SETCLOCK) && HAVE_DECL_CLOCK_MONOTONIC
+	struct timespec ts;
+	pthread_condattr_t condattr;
+
+	// POSIX doesn't seem to *require* that pthread_condattr_setclock()
+	// will fail if given an unsupported clock ID. Test that
+	// CLOCK_MONOTONIC really is supported using clock_gettime().
+	if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0
+			&& pthread_condattr_init(&condattr) == 0) {
+		int ret = pthread_condattr_setclock(
+				&condattr, CLOCK_MONOTONIC);
+		if (ret == 0)
+			ret = pthread_cond_init(&mycond->cond, &condattr);
+
+		pthread_condattr_destroy(&condattr);
+
+		if (ret == 0) {
+			mycond->clk_id = CLOCK_MONOTONIC;
+			return 0;
+		}
+	}
+
+	// If anything above fails, fall back to the default CLOCK_REALTIME.
+	// POSIX requires that all implementations of clock_gettime() must
+	// support at least CLOCK_REALTIME.
+#	endif
+
+	mycond->clk_id = CLOCK_REALTIME;
+#endif
+
+	return pthread_cond_init(&mycond->cond, NULL);
+}
+
+static inline void
+mythread_cond_destroy(mythread_cond *cond)
+{
+	int ret = pthread_cond_destroy(&cond->cond);
+	assert(ret == 0);
+	(void)ret;
+}
+
+static inline void
+mythread_cond_signal(mythread_cond *cond)
+{
+	int ret = pthread_cond_signal(&cond->cond);
+	assert(ret == 0);
+	(void)ret;
+}
+
+static inline void
+mythread_cond_wait(mythread_cond *cond, mythread_mutex *mutex)
+{
+	int ret = pthread_cond_wait(&cond->cond, mutex);
+	assert(ret == 0);
+	(void)ret;
+}
+
+// Waits on a condition or until a timeout expires. If the timeout expires,
+// non-zero is returned, otherwise zero is returned.
+static inline int
+mythread_cond_timedwait(mythread_cond *cond, mythread_mutex *mutex,
+		const mythread_condtime *condtime)
+{
+	int ret = pthread_cond_timedwait(&cond->cond, mutex, condtime);
+	assert(ret == 0 || ret == ETIMEDOUT);
+	return ret;
+}
+
+// Sets condtime to the absolute time that is timeout_ms milliseconds
+// in the future. The type of the clock to use is taken from cond.
+static inline void
+mythread_condtime_set(mythread_condtime *condtime, const mythread_cond *cond,
+		uint32_t timeout_ms)
+{
+	condtime->tv_sec = timeout_ms / 1000;
+	condtime->tv_nsec = (timeout_ms % 1000) * 1000000;
+
+#ifdef HAVE_CLOCK_GETTIME
+	struct timespec now;
+	int ret = clock_gettime(cond->clk_id, &now);
+	assert(ret == 0);
+	(void)ret;
+
+	condtime->tv_sec += now.tv_sec;
+	condtime->tv_nsec += now.tv_nsec;
+#else
+	(void)cond;
+
+	struct timeval now;
+	gettimeofday(&now, NULL);
+
+	condtime->tv_sec += now.tv_sec;
+	condtime->tv_nsec += now.tv_usec * 1000L;
+#endif
+
+	// tv_nsec must stay in the range [0, 999_999_999].
+	if (condtime->tv_nsec >= 1000000000L) {
+		condtime->tv_nsec -= 1000000000L;
+		++condtime->tv_sec;
+	}
+}
+
+
+#elif defined(MYTHREAD_WIN95) || defined(MYTHREAD_VISTA)
+
+/////////////////////
+// Windows threads //
+/////////////////////
+
+#define WIN32_LEAN_AND_MEAN
+#ifdef MYTHREAD_VISTA
+#	undef _WIN32_WINNT
+#	define _WIN32_WINNT 0x0600
+#endif
+#include <windows.h>
+#include <process.h>
+
+#define MYTHREAD_RET_TYPE unsigned int __stdcall
+#define MYTHREAD_RET_VALUE 0
+
+typedef HANDLE mythread;
+typedef CRITICAL_SECTION mythread_mutex;
+
+#ifdef MYTHREAD_WIN95
+typedef HANDLE mythread_cond;
+#else
+typedef CONDITION_VARIABLE mythread_cond;
+#endif
+
+typedef struct {
+	// Tick count (milliseconds) in the beginning of the timeout.
+	// NOTE: This is 32 bits so it wraps around after 49.7 days.
+	// Multi-day timeouts may not work as expected.
+	DWORD start;
+
+	// Length of the timeout in milliseconds. The timeout expires
+	// when the current tick count minus "start" is equal or greater
+	// than "timeout".
+	DWORD timeout;
+} mythread_condtime;
+
+
+// mythread_once() is only available with Vista threads.
+#ifdef MYTHREAD_VISTA
+#define mythread_once(func) \
 	do { \
-		static bool once_ = false; \
-		if (!once_) { \
+		static INIT_ONCE once_ = INIT_ONCE_STATIC_INIT; \
+		BOOL pending_; \
+		if (!InitOnceBeginInitialize(&once_, 0, &pending_, NULL)) \
+			abort(); \
+		if (pending_) \
 			func(); \
-			once_ = true; \
-		} \
+		if (!InitOnceComplete(&once, 0, NULL)) \
+			abort(); \
 	} while (0)
+#endif
 
-#	define mythread_sigmask(how, set, oset) \
-		sigprocmask(how, set, oset)
+
+// mythread_sigmask() isn't available on Windows. Even a dummy version would
+// make no sense because the other POSIX signal functions are missing anyway.
+
+
+static inline int
+mythread_create(mythread *thread,
+		unsigned int (__stdcall *func)(void *arg), void *arg)
+{
+	uintptr_t ret = _beginthreadex(NULL, 0, func, arg, 0, NULL);
+	if (ret == 0)
+		return -1;
+
+	*thread = (HANDLE)ret;
+	return 0;
+}
+
+static inline int
+mythread_join(mythread thread)
+{
+	int ret = 0;
+
+	if (WaitForSingleObject(thread, INFINITE) != WAIT_OBJECT_0)
+		ret = -1;
+
+	if (!CloseHandle(thread))
+		ret = -1;
+
+	return ret;
+}
+
+
+static inline int
+mythread_mutex_init(mythread_mutex *mutex)
+{
+	InitializeCriticalSection(mutex);
+	return 0;
+}
+
+static inline void
+mythread_mutex_destroy(mythread_mutex *mutex)
+{
+	DeleteCriticalSection(mutex);
+}
+
+static inline void
+mythread_mutex_lock(mythread_mutex *mutex)
+{
+	EnterCriticalSection(mutex);
+}
+
+static inline void
+mythread_mutex_unlock(mythread_mutex *mutex)
+{
+	LeaveCriticalSection(mutex);
+}
+
+
+static inline int
+mythread_cond_init(mythread_cond *cond)
+{
+#ifdef MYTHREAD_WIN95
+	*cond = CreateEvent(NULL, FALSE, FALSE, NULL);
+	return *cond == NULL ? -1 : 0;
+#else
+	InitializeConditionVariable(cond);
+	return 0;
+#endif
+}
+
+static inline void
+mythread_cond_destroy(mythread_cond *cond)
+{
+#ifdef MYTHREAD_WIN95
+	CloseHandle(*cond);
+#else
+	(void)cond;
+#endif
+}
+
+static inline void
+mythread_cond_signal(mythread_cond *cond)
+{
+#ifdef MYTHREAD_WIN95
+	SetEvent(*cond);
+#else
+	WakeConditionVariable(cond);
+#endif
+}
+
+static inline void
+mythread_cond_wait(mythread_cond *cond, mythread_mutex *mutex)
+{
+#ifdef MYTHREAD_WIN95
+	LeaveCriticalSection(mutex);
+	WaitForSingleObject(*cond, INFINITE);
+	EnterCriticalSection(mutex);
+#else
+	BOOL ret = SleepConditionVariableCS(cond, mutex, INFINITE);
+	assert(ret);
+	(void)ret;
+#endif
+}
+
+static inline int
+mythread_cond_timedwait(mythread_cond *cond, mythread_mutex *mutex,
+		const mythread_condtime *condtime)
+{
+#ifdef MYTHREAD_WIN95
+	LeaveCriticalSection(mutex);
+#endif
+
+	DWORD elapsed = GetTickCount() - condtime->start;
+	DWORD timeout = elapsed >= condtime->timeout
+			? 0 : condtime->timeout - elapsed;
+
+#ifdef MYTHREAD_WIN95
+	DWORD ret = WaitForSingleObject(*cond, timeout);
+	assert(ret == WAIT_OBJECT_0 || ret == WAIT_TIMEOUT);
+
+	EnterCriticalSection(mutex);
+
+	return ret == WAIT_TIMEOUT;
+#else
+	BOOL ret = SleepConditionVariableCS(cond, mutex, timeout);
+	assert(ret || GetLastError() == ERROR_TIMEOUT);
+	return !ret;
+#endif
+}
+
+static inline void
+mythread_condtime_set(mythread_condtime *condtime, const mythread_cond *cond,
+		uint32_t timeout)
+{
+	(void)cond;
+	condtime->start = GetTickCount();
+	condtime->timeout = timeout;
+}
+
+#endif
 
 #endif

src/common/sysdefs.h

@@ -165,6 +165,16 @@ typedef unsigned char _Bool;
 #	include <memory.h>
 #endif
 
+// As of MSVC 2013, inline and restrict are supported with
+// non-standard keywords.
+#if defined(_WIN32) && defined(_MSC_VER)
+#	ifndef inline
+#		define inline __inline
+#	endif
+#	ifndef restrict
+#		define restrict __restrict
+#	endif
+#endif
 
 ////////////
 // Macros //

src/common/tuklib_cpucores.c

@@ -12,7 +12,13 @@
 
 #include "tuklib_cpucores.h"
 
-#if defined(TUKLIB_CPUCORES_SYSCTL)
+#if defined(_WIN32) || defined(__CYGWIN__)
+#	ifndef _WIN32_WINNT
+#		define _WIN32_WINNT 0x0500
+#	endif
+#	include <windows.h>
+
+#elif defined(TUKLIB_CPUCORES_SYSCTL)
 #	ifdef HAVE_SYS_PARAM_H
 #		include <sys/param.h>
 #	endif
@@ -33,7 +39,12 @@ tuklib_cpucores(void)
 {
 	uint32_t ret = 0;
 
-#if defined(TUKLIB_CPUCORES_SYSCTL)
+#if defined(_WIN32) || defined(__CYGWIN__)
+	SYSTEM_INFO sysinfo;
+	GetSystemInfo(&sysinfo);
+	ret = sysinfo.dwNumberOfProcessors;
+
+#elif defined(TUKLIB_CPUCORES_SYSCTL)
 	int name[2] = { CTL_HW, HW_NCPU };
 	int cpus;
 	size_t cpus_size = sizeof(cpus);

src/liblzma/Makefile.am

@@ -12,7 +12,7 @@ CLEANFILES =
 doc_DATA =
 
 lib_LTLIBRARIES = liblzma.la
-liblzma_la_SOURCES = $(top_srcdir)/src/common/tuklib_physmem.c
+liblzma_la_SOURCES =
 liblzma_la_CPPFLAGS = \
 	-I$(top_srcdir)/src/liblzma/api \
 	-I$(top_srcdir)/src/liblzma/common \
@@ -24,7 +24,19 @@ liblzma_la_CPPFLAGS = \
 	-I$(top_srcdir)/src/liblzma/simple \
 	-I$(top_srcdir)/src/common \
 	-DTUKLIB_SYMBOL_PREFIX=lzma_
-liblzma_la_LDFLAGS = -no-undefined -version-info 5:7:0
+liblzma_la_LDFLAGS = -no-undefined -version-info 5:99:0
+
+EXTRA_DIST += liblzma.map validate_map.sh
+if COND_SYMVERS
+liblzma_la_LDFLAGS += \
+	-Wl,--version-script=$(top_srcdir)/src/liblzma/liblzma.map
+endif
+
+liblzma_la_SOURCES += $(top_srcdir)/src/common/tuklib_physmem.c
+
+if COND_THREADS
+liblzma_la_SOURCES += $(top_srcdir)/src/common/tuklib_cpucores.c
+endif
 
 include $(srcdir)/common/Makefile.inc
 include $(srcdir)/check/Makefile.inc
@@ -103,8 +115,8 @@ liblzma.pc: $(srcdir)/liblzma.pc.in
 		-e 's,@PACKAGE_URL[@],$(PACKAGE_URL),g' \
 		-e 's,@PACKAGE_VERSION[@],$(PACKAGE_VERSION),g' \
 		-e 's,@PTHREAD_CFLAGS[@],$(PTHREAD_CFLAGS),g' \
-		-e 's,@PTHREAD_LIBS[@],$(PTHREAD_LIBS),g' \
-		< $(srcdir)/liblzma.pc.in > $@ || { rm -f $@; exit 1; }
+		-e 's,@LIBS[@],$(LIBS),g' \
+		< $< > $@ || { rm -f $@; exit 1; }
 
 clean-local:
 	rm -f liblzma.pc

src/liblzma/api/Makefile.am

@@ -17,7 +17,7 @@ nobase_include_HEADERS = \
 	lzma/hardware.h \
 	lzma/index.h \
 	lzma/index_hash.h \
-	lzma/lzma.h \
+	lzma/lzma12.h \
 	lzma/stream_flags.h \
 	lzma/version.h \
 	lzma/vli.h

src/liblzma/api/lzma.h

@@ -286,7 +286,7 @@ extern "C" {
 #include "lzma/filter.h"
 #include "lzma/bcj.h"
 #include "lzma/delta.h"
-#include "lzma/lzma.h"
+#include "lzma/lzma12.h"
 
 /* Container formats */
 #include "lzma/container.h"

src/liblzma/api/lzma/base.h

@@ -240,12 +240,12 @@ typedef enum {
 /**
  * \brief       The `action' argument for lzma_code()
  *
- * After the first use of LZMA_SYNC_FLUSH, LZMA_FULL_FLUSH, or LZMA_FINISH,
- * the same `action' must is used until lzma_code() returns LZMA_STREAM_END.
- * Also, the amount of input (that is, strm->avail_in) must not be modified
- * by the application until lzma_code() returns LZMA_STREAM_END. Changing the
- * `action' or modifying the amount of input will make lzma_code() return
- * LZMA_PROG_ERROR.
+ * After the first use of LZMA_SYNC_FLUSH, LZMA_FULL_FLUSH, LZMA_FULL_BARRIER,
+ * or LZMA_FINISH, the same `action' must is used until lzma_code() returns
+ * LZMA_STREAM_END. Also, the amount of input (that is, strm->avail_in) must
+ * not be modified by the application until lzma_code() returns
+ * LZMA_STREAM_END. Changing the `action' or modifying the amount of input
+ * will make lzma_code() return LZMA_PROG_ERROR.
  */
 typedef enum {
 	LZMA_RUN = 0,
@@ -293,7 +293,7 @@ typedef enum {
 		 *
 		 * All the input data going to the current Block must have
 		 * been given to the encoder (the last bytes can still be
-		 * pending in* next_in). Call lzma_code() with LZMA_FULL_FLUSH
+		 * pending in *next_in). Call lzma_code() with LZMA_FULL_FLUSH
 		 * until it returns LZMA_STREAM_END. Then continue normally
 		 * with LZMA_RUN or finish the Stream with LZMA_FINISH.
 		 *
@@ -302,6 +302,29 @@ typedef enum {
 		 * no unfinished Block, no empty Block is created.
 		 */
 
+	LZMA_FULL_BARRIER = 4,
+		/**<
+		 * \brief       Finish encoding of the current Block
+		 *
+		 * This is like LZMA_FULL_FLUSH except that this doesn't
+		 * necessarily wait until all the input has been made
+		 * available via the output buffer. That is, lzma_code()
+		 * might return LZMA_STREAM_END as soon as all the input
+		 * has been consumed (avail_in == 0).
+		 *
+		 * LZMA_FULL_BARRIER is useful with a threaded encoder if
+		 * one wants to split the .xz Stream into Blocks at specific
+		 * offsets but doesn't care if the output isn't flushed
+		 * immediately. Using LZMA_FULL_BARRIER allows keeping
+		 * the threads busy while LZMA_FULL_FLUSH would make
+		 * lzma_code() wait until all the threads have finished
+		 * until more data could be passed to the encoder.
+		 *
+		 * With a lzma_stream initialized with the single-threaded
+		 * lzma_stream_encoder() or lzma_easy_encoder(),
+		 * LZMA_FULL_BARRIER is an alias for LZMA_FULL_FLUSH.
+		 */
+
 	LZMA_FINISH = 3
 		/**<
 		 * \brief       Finish the coding operation
@@ -332,11 +355,19 @@ typedef enum {
  * malloc() and free(). C++ users should note that the custom memory
  * handling functions must not throw exceptions.
  *
- * liblzma doesn't make an internal copy of lzma_allocator. Thus, it is
- * OK to change these function pointers in the middle of the coding
- * process, but obviously it must be done carefully to make sure that the
- * replacement `free' can deallocate memory allocated by the earlier
- * `alloc' function(s).
+ * Single-threaded mode only: liblzma doesn't make an internal copy of
+ * lzma_allocator. Thus, it is OK to change these function pointers in
+ * the middle of the coding process, but obviously it must be done
+ * carefully to make sure that the replacement `free' can deallocate
+ * memory allocated by the earlier `alloc' function(s).
+ *
+ * Multithreaded mode: liblzma might internally store pointers to the
+ * lzma_allocator given via the lzma_stream structure. The application
+ * must not change the allocator pointer in lzma_stream or the contents
+ * of the pointed lzma_allocator structure until lzma_end() has been used
+ * to free the memory associated with that lzma_stream. The allocation
+ * functions might be called simultaneously from multiple threads, and
+ * thus they must be thread safe.
  */
 typedef struct {
 	/**
@@ -448,7 +479,8 @@ typedef struct lzma_internal_s lzma_internal;
  *
  * Application may modify the values of total_in and total_out as it wants.
  * They are updated by liblzma to match the amount of data read and
- * written, but aren't used for anything else.
+ * written but aren't used for anything else except as a possible return
+ * values from lzma_get_progress().
  */
 typedef struct {
 	const uint8_t *next_in; /**< Pointer to the next input byte. */
@@ -464,8 +496,10 @@ typedef struct {
 	 *
 	 * In most cases this is NULL which makes liblzma use
 	 * the standard malloc() and free().
+	 *
+	 * \note        In 5.0.x this is not a const pointer.
 	 */
-	lzma_allocator *allocator;
+	const lzma_allocator *allocator;
 
 	/** Internal state is not visible to applications. */
 	lzma_internal *internal;
@@ -546,6 +580,25 @@ extern LZMA_API(lzma_ret) lzma_code(lzma_stream *strm, lzma_action action)
 extern LZMA_API(void) lzma_end(lzma_stream *strm) lzma_nothrow;
 
 
+/**
+ * \brief       Get progress information
+ *
+ * In single-threaded mode, applications can get progress information from
+ * strm->total_in and strm->total_out. In multi-threaded mode this is less
+ * useful because a significant amount of both input and output data gets
+ * buffered internally by liblzma. This makes total_in and total_out give
+ * misleading information and also makes the progress indicator updates
+ * non-smooth.
+ *
+ * This function gives realistic progress information also in multi-threaded
+ * mode by taking into account the progress made by each thread. In
+ * single-threaded mode *progress_in and *progress_out are set to
+ * strm->total_in and strm->total_out, respectively.
+ */
+extern LZMA_API(void) lzma_get_progress(lzma_stream *strm,
+		uint64_t *progress_in, uint64_t *progress_out) lzma_nothrow;
+
+
 /**
  * \brief       Get the memory usage of decoder filter chain
  *

src/liblzma/api/lzma/block.h

@@ -31,11 +31,16 @@ typedef struct {
 	/**
 	 * \brief       Block format version
 	 *
-	 * To prevent API and ABI breakages if new features are needed in
-	 * the Block field, a version number is used to indicate which
-	 * fields in this structure are in use. For now, version must always
-	 * be zero. With non-zero version, most Block related functions will
-	 * return LZMA_OPTIONS_ERROR.
+	 * To prevent API and ABI breakages when new features are needed,
+	 * a version number is used to indicate which fields in this
+	 * structure are in use:
+	 *   - liblzma >= 5.0.0: version = 0 is supported.
+	 *   - liblzma >= 5.1.4beta: Support for version = 1 was added,
+	 *     which adds the ignore_check field.
+	 *
+	 * If version is greater than one, most Block related functions
+	 * will return LZMA_OPTIONS_ERROR (lzma_block_header_decode() works
+	 * with any version value).
 	 *
 	 * Read by:
 	 *  - All functions that take pointer to lzma_block as argument,
@@ -233,7 +238,28 @@ typedef struct {
 	lzma_reserved_enum reserved_enum2;
 	lzma_reserved_enum reserved_enum3;
 	lzma_reserved_enum reserved_enum4;
-	lzma_bool reserved_bool1;
+
+	/**
+	 * \brief       A flag to Block decoder to not verify the Check field
+	 *
+	 * This field is supported by liblzma >= 5.1.4beta if .version >= 1.
+	 *
+	 * If this is set to true, the integrity check won't be calculated
+	 * and verified. Unless you know what you are doing, you should
+	 * leave this to false. (A reason to set this to true is when the
+	 * file integrity is verified externally anyway and you want to
+	 * speed up the decompression, which matters mostly when using
+	 * SHA-256 as the integrity check.)
+	 *
+	 * If .version >= 1, read by:
+	 *   - lzma_block_decoder()
+	 *   - lzma_block_buffer_decode()
+	 *
+	 * Written by (.version is ignored):
+	 *   - lzma_block_header_decode() always sets this to false
+	 */
+	lzma_bool ignore_check;
+
 	lzma_bool reserved_bool2;
 	lzma_bool reserved_bool3;
 	lzma_bool reserved_bool4;
@@ -310,10 +336,14 @@ extern LZMA_API(lzma_ret) lzma_block_header_encode(
 /**
  * \brief       Decode Block Header
  *
- * block->version should be set to the highest value supported by the
- * application; currently the only possible version is zero. This function
- * will set version to the lowest value that still supports all the features
- * required by the Block Header.
+ * block->version should (usually) be set to the highest value supported
+ * by the application. If the application sets block->version to a value
+ * higher than supported by the current liblzma version, this function will
+ * downgrade block->version to the highest value supported by it. Thus one
+ * should check the value of block->version after calling this function if
+ * block->version was set to a non-zero value and the application doesn't
+ * otherwise know that the liblzma version being used is new enough to
+ * support the specified block->version.
  *
  * The size of the Block Header must have already been decoded with
  * lzma_block_header_size_decode() macro and stored to block->header_size.
@@ -344,7 +374,7 @@ extern LZMA_API(lzma_ret) lzma_block_header_encode(
  *                block->header_size is invalid or block->filters is NULL.
  */
 extern LZMA_API(lzma_ret) lzma_block_header_decode(lzma_block *block,
-		lzma_allocator *allocator, const uint8_t *in)
+		const lzma_allocator *allocator, const uint8_t *in)
 		lzma_nothrow lzma_attr_warn_unused_result;
 
 
@@ -493,7 +523,25 @@ extern LZMA_API(size_t) lzma_block_buffer_bound(size_t uncompressed_size)
  *              - LZMA_PROG_ERROR
  */
 extern LZMA_API(lzma_ret) lzma_block_buffer_encode(
-		lzma_block *block, lzma_allocator *allocator,
+		lzma_block *block, const lzma_allocator *allocator,
+		const uint8_t *in, size_t in_size,
+		uint8_t *out, size_t *out_pos, size_t out_size)
+		lzma_nothrow lzma_attr_warn_unused_result;
+
+
+/**
+ * \brief       Single-call uncompressed .xz Block encoder
+ *
+ * This is like lzma_block_buffer_encode() except this doesn't try to
+ * compress the data and instead encodes the data using LZMA2 uncompressed
+ * chunks. The required output buffer size can be determined with
+ * lzma_block_buffer_bound().
+ *
+ * Since the data won't be compressed, this function ignores block->filters.
+ * This function doesn't take lzma_allocator because this function doesn't
+ * allocate any memory from the heap.
+ */
+extern LZMA_API(lzma_ret) lzma_block_uncomp_encode(lzma_block *block,
 		const uint8_t *in, size_t in_size,
 		uint8_t *out, size_t *out_pos, size_t out_size)
 		lzma_nothrow lzma_attr_warn_unused_result;
@@ -527,7 +575,7 @@ extern LZMA_API(lzma_ret) lzma_block_buffer_encode(
  *              - LZMA_PROG_ERROR
  */
 extern LZMA_API(lzma_ret) lzma_block_buffer_decode(
-		lzma_block *block, lzma_allocator *allocator,
+		lzma_block *block, const lzma_allocator *allocator,
 		const uint8_t *in, size_t *in_pos, size_t in_size,
 		uint8_t *out, size_t *out_pos, size_t out_size)
 		lzma_nothrow;

src/liblzma/api/lzma/container.h

@@ -60,6 +60,129 @@
 #define LZMA_PRESET_EXTREME       (UINT32_C(1) << 31)
 
 
+#ifdef LZMA_UNSTABLE /* Unstable API that may change. Use only for testing. */
+/**
+ * \brief       Multithreading options
+ */
+typedef struct {
+	/**
+	 * \brief       Flags
+	 *
+	 * Set this to zero if no flags are wanted.
+	 *
+	 * No flags are currently supported.
+	 */
+	uint32_t flags;
+
+	/**
+	 * \brief       Number of worker threads to use
+	 */
+	uint32_t threads;
+
+	/**
+	 * \brief       Maximum uncompressed size of a Block
+	 *
+	 * The encoder will start a new .xz Block every block_size bytes.
+	 * Using LZMA_FULL_FLUSH or LZMA_FULL_BARRIER with lzma_code()
+	 * the caller may tell liblzma to start a new Block earlier.
+	 *
+	 * With LZMA2, a recommended block size is 2-4 times the LZMA2
+	 * dictionary size. With very small dictionaries, it is recommended
+	 * to use at least 1 MiB block size for good compression ratio, even
+	 * if this is more than four times the dictionary size. Note that
+	 * these are only recommendations for typical use cases; feel free
+	 * to use other values. Just keep in mind that using a block size
+	 * less than the LZMA2 dictionary size is waste of RAM.
+	 *
+	 * Set this to 0 to let liblzma choose the block size depending
+	 * on the compression options. For LZMA2 it will be 3*dict_size
+	 * or 1 MiB, whichever is more.
+	 */
+	uint64_t block_size;
+
+	/**
+	 * \brief       Timeout to allow lzma_code() to return early
+	 *
+	 * Multithreading can make liblzma to consume input and produce
+	 * output in a very bursty way: it may first read a lot of input
+	 * to fill internal buffers, then no input or output occurs for
+	 * a while.
+	 *
+	 * In single-threaded mode, lzma_code() won't return until it has
+	 * either consumed all the input or filled the output buffer. If
+	 * this is done in multithreaded mode, it may cause a call
+	 * lzma_code() to take even tens of seconds, which isn't acceptable
+	 * in all applications.
+	 *
+	 * To avoid very long blocking times in lzma_code(), a timeout
+	 * (in milliseconds) may be set here. If lzma_code() would block
+	 * longer than this number of milliseconds, it will return with
+	 * LZMA_OK. Reasonable values are 100 ms or more. The xz command
+	 * line tool uses 300 ms.
+	 *
+	 * If long blocking times are fine for you, set timeout to a special
+	 * value of 0, which will disable the timeout mechanism and will make
+	 * lzma_code() block until all the input is consumed or the output
+	 * buffer has been filled.
+	 *
+	 * \note        Even with a timeout, lzma_code() might sometimes take
+	 *              somewhat long time to return. No timing guarantees
+	 *              are made.
+	 */
+	uint32_t timeout;
+
+	/**
+	 * \brief       Compression preset (level and possible flags)
+	 *
+	 * The preset is set just like with lzma_easy_encoder().
+	 * The preset is ignored if filters below is non-NULL.
+	 */
+	uint32_t preset;
+
+	/**
+	 * \brief       Filter chain (alternative to a preset)
+	 *
+	 * If this is NULL, the preset above is used. Otherwise the preset
+	 * is ignored and the filter chain specified here is used.
+	 */
+	const lzma_filter *filters;
+
+	/**
+	 * \brief       Integrity check type
+	 *
+	 * See check.h for available checks. The xz command line tool
+	 * defaults to LZMA_CHECK_CRC64, which is a good choice if you
+	 * are unsure.
+	 */
+	lzma_check check;
+
+	/*
+	 * Reserved space to allow possible future extensions without
+	 * breaking the ABI. You should not touch these, because the names
+	 * of these variables may change. These are and will never be used
+	 * with the currently supported options, so it is safe to leave these
+	 * uninitialized.
+	 */
+	lzma_reserved_enum reserved_enum1;
+	lzma_reserved_enum reserved_enum2;
+	lzma_reserved_enum reserved_enum3;
+	uint32_t reserved_int1;
+	uint32_t reserved_int2;
+	uint32_t reserved_int3;
+	uint32_t reserved_int4;
+	uint64_t reserved_int5;
+	uint64_t reserved_int6;
+	uint64_t reserved_int7;
+	uint64_t reserved_int8;
+	void *reserved_ptr1;
+	void *reserved_ptr2;
+	void *reserved_ptr3;
+	void *reserved_ptr4;
+
+} lzma_mt;
+#endif
+
+
 /**
  * \brief       Calculate approximate memory usage of easy encoder
  *
@@ -165,7 +288,8 @@ extern LZMA_API(lzma_ret) lzma_easy_encoder(
  */
 extern LZMA_API(lzma_ret) lzma_easy_buffer_encode(
 		uint32_t preset, lzma_check check,
-		lzma_allocator *allocator, const uint8_t *in, size_t in_size,
+		const lzma_allocator *allocator,
+		const uint8_t *in, size_t in_size,
 		uint8_t *out, size_t *out_pos, size_t out_size) lzma_nothrow;
 
 
@@ -190,6 +314,50 @@ extern LZMA_API(lzma_ret) lzma_stream_encoder(lzma_stream *strm,
 		lzma_nothrow lzma_attr_warn_unused_result;
 
 
+#ifdef LZMA_UNSTABLE /* Unstable API that may change. Use only for testing. */
+/**
+ * \brief       Calculate approximate memory usage of multithreaded .xz encoder
+ *
+ * Since doing the encoding in threaded mode doesn't affect the memory
+ * requirements of single-threaded decompressor, you can use
+ * lzma_easy_decoder_memusage(options->preset) or
+ * lzma_raw_decoder_memusage(options->filters) to calculate
+ * the decompressor memory requirements.
+ *
+ * \param       options Compression options
+ *
+ * \return      Number of bytes of memory required for encoding with the
+ *              given options. If an error occurs, for example due to
+ *              unsupported preset or filter chain, UINT64_MAX is returned.
+ */
+extern LZMA_API(uint64_t) lzma_stream_encoder_mt_memusage(
+		const lzma_mt *options) lzma_nothrow lzma_attr_pure;
+
+
+/**
+ * \brief       Initialize multithreaded .xz Stream encoder
+ *
+ * This provides the functionality of lzma_easy_encoder() and
+ * lzma_stream_encoder() as a single function for multithreaded use.
+ *
+ * TODO: For lzma_code(), only LZMA_RUN and LZMA_FINISH are currently
+ * supported. Support for other actions has been planned.
+ *
+ * \param       strm    Pointer to properly prepared lzma_stream
+ * \param       options Pointer to multithreaded compression options
+ *
+ * \return      - LZMA_OK
+ *              - LZMA_MEM_ERROR
+ *              - LZMA_UNSUPPORTED_CHECK
+ *              - LZMA_OPTIONS_ERROR
+ *              - LZMA_PROG_ERROR
+ */
+extern LZMA_API(lzma_ret) lzma_stream_encoder_mt(
+		lzma_stream *strm, const lzma_mt *options)
+		lzma_nothrow lzma_attr_warn_unused_result;
+#endif
+
+
 /**
  * \brief       Initialize .lzma encoder (legacy file format)
  *
@@ -269,7 +437,8 @@ extern LZMA_API(size_t) lzma_stream_buffer_bound(size_t uncompressed_size)
  */
 extern LZMA_API(lzma_ret) lzma_stream_buffer_encode(
 		lzma_filter *filters, lzma_check check,
-		lzma_allocator *allocator, const uint8_t *in, size_t in_size,
+		const lzma_allocator *allocator,
+		const uint8_t *in, size_t in_size,
 		uint8_t *out, size_t *out_pos, size_t out_size)
 		lzma_nothrow lzma_attr_warn_unused_result;
 
@@ -304,6 +473,30 @@ extern LZMA_API(lzma_ret) lzma_stream_buffer_encode(
 #define LZMA_TELL_ANY_CHECK             UINT32_C(0x04)
 
 
+/**
+ * This flag makes lzma_code() not calculate and verify the integrity check
+ * of the compressed data in .xz files. This means that invalid integrity
+ * check values won't be detected and LZMA_DATA_ERROR won't be returned in
+ * such cases.
+ *
+ * This flag only affects the checks of the compressed data itself; the CRC32
+ * values in the .xz headers will still be verified normally.
+ *
+ * Don't use this flag unless you know what you are doing. Possible reasons
+ * to use this flag:
+ *
+ *   - Trying to recover data from a corrupt .xz file.
+ *
+ *   - Speeding up decompression, which matters mostly with SHA-256
+ *     or with files that have compressed extremely well. It's recommended
+ *     to not use this flag for this purpose unless the file integrity is
+ *     verified externally in some other way.
+ *
+ * Support for this flag was added in liblzma 5.1.4beta.
+ */
+#define LZMA_IGNORE_CHECK               UINT32_C(0x10)
+
+
 /**
  * This flag enables decoding of concatenated files with file formats that
  * allow concatenating compressed files as is. From the formats currently
@@ -418,7 +611,8 @@ extern LZMA_API(lzma_ret) lzma_alone_decoder(
  *              - LZMA_PROG_ERROR
  */
 extern LZMA_API(lzma_ret) lzma_stream_buffer_decode(
-		uint64_t *memlimit, uint32_t flags, lzma_allocator *allocator,
+		uint64_t *memlimit, uint32_t flags,
+		const lzma_allocator *allocator,
 		const uint8_t *in, size_t *in_pos, size_t in_size,
 		uint8_t *out, size_t *out_pos, size_t out_size)
 		lzma_nothrow lzma_attr_warn_unused_result;

src/liblzma/api/lzma/filter.h

@@ -116,8 +116,9 @@ extern LZMA_API(lzma_bool) lzma_filter_decoder_is_supported(lzma_vli id)
  *                is not NULL.
  *              - LZMA_PROG_ERROR: src or dest is NULL.
  */
-extern LZMA_API(lzma_ret) lzma_filters_copy(const lzma_filter *src,
-		lzma_filter *dest, lzma_allocator *allocator) lzma_nothrow;
+extern LZMA_API(lzma_ret) lzma_filters_copy(
+		const lzma_filter *src, lzma_filter *dest,
+		const lzma_allocator *allocator) lzma_nothrow;
 
 
 /**
@@ -256,7 +257,7 @@ extern LZMA_API(lzma_ret) lzma_filters_update(
  *              won't necessarily meet that bound.)
  */
 extern LZMA_API(lzma_ret) lzma_raw_buffer_encode(
-		const lzma_filter *filters, lzma_allocator *allocator,
+		const lzma_filter *filters, const lzma_allocator *allocator,
 		const uint8_t *in, size_t in_size, uint8_t *out,
 		size_t *out_pos, size_t out_size) lzma_nothrow;
 
@@ -280,7 +281,7 @@ extern LZMA_API(lzma_ret) lzma_raw_buffer_encode(
  *                          which no data is written to is out[out_size].
  */
 extern LZMA_API(lzma_ret) lzma_raw_buffer_decode(
-		const lzma_filter *filters, lzma_allocator *allocator,
+		const lzma_filter *filters, const lzma_allocator *allocator,
 		const uint8_t *in, size_t *in_pos, size_t in_size,
 		uint8_t *out, size_t *out_pos, size_t out_size) lzma_nothrow;
 
@@ -356,7 +357,7 @@ extern LZMA_API(lzma_ret) lzma_properties_encode(
  *              - LZMA_MEM_ERROR
  */
 extern LZMA_API(lzma_ret) lzma_properties_decode(
-		lzma_filter *filter, lzma_allocator *allocator,
+		lzma_filter *filter, const lzma_allocator *allocator,
 		const uint8_t *props, size_t props_size) lzma_nothrow;
 
 
@@ -419,6 +420,6 @@ extern LZMA_API(lzma_ret) lzma_filter_flags_encode(const lzma_filter *filter,
  *              - LZMA_PROG_ERROR
  */
 extern LZMA_API(lzma_ret) lzma_filter_flags_decode(
-		lzma_filter *filter, lzma_allocator *allocator,
+		lzma_filter *filter, const lzma_allocator *allocator,
 		const uint8_t *in, size_t *in_pos, size_t in_size)
 		lzma_nothrow lzma_attr_warn_unused_result;

src/liblzma/api/lzma/hardware.h

@@ -48,3 +48,17 @@
  *              of RAM on the specific operating system.
  */
 extern LZMA_API(uint64_t) lzma_physmem(void) lzma_nothrow;
+
+
+/**
+ * \brief       Get the number of processor cores or threads
+ *
+ * This function may be useful when determining how many threads to use.
+ * If the hardware supports more than one thread per CPU core, the number
+ * of hardware threads is returned if that information is available.
+ *
+ * \brief       On success, the number of available CPU threads or cores is
+ *              returned. If this information isn't available or an error
+ *              occurs, zero is returned.
+ */
+extern LZMA_API(uint32_t) lzma_cputhreads(void) lzma_nothrow;

src/liblzma/api/lzma/index.h

@@ -303,7 +303,7 @@ extern LZMA_API(uint64_t) lzma_index_memused(const lzma_index *i)
  * \return      On success, a pointer to an empty initialized lzma_index is
  *              returned. If allocation fails, NULL is returned.
  */
-extern LZMA_API(lzma_index *) lzma_index_init(lzma_allocator *allocator)
+extern LZMA_API(lzma_index *) lzma_index_init(const lzma_allocator *allocator)
 		lzma_nothrow;
 
 
@@ -312,8 +312,8 @@ extern LZMA_API(lzma_index *) lzma_index_init(lzma_allocator *allocator)
  *
  * If i is NULL, this does nothing.
  */
-extern LZMA_API(void) lzma_index_end(lzma_index *i, lzma_allocator *allocator)
-		lzma_nothrow;
+extern LZMA_API(void) lzma_index_end(
+		lzma_index *i, const lzma_allocator *allocator) lzma_nothrow;
 
 
 /**
@@ -341,7 +341,7 @@ extern LZMA_API(void) lzma_index_end(lzma_index *i, lzma_allocator *allocator)
  *              - LZMA_PROG_ERROR
  */
 extern LZMA_API(lzma_ret) lzma_index_append(
-		lzma_index *i, lzma_allocator *allocator,
+		lzma_index *i, const lzma_allocator *allocator,
 		lzma_vli unpadded_size, lzma_vli uncompressed_size)
 		lzma_nothrow lzma_attr_warn_unused_result;
 
@@ -564,8 +564,8 @@ extern LZMA_API(lzma_bool) lzma_index_iter_locate(
  *              - LZMA_MEM_ERROR
  *              - LZMA_PROG_ERROR
  */
-extern LZMA_API(lzma_ret) lzma_index_cat(
-		lzma_index *dest, lzma_index *src, lzma_allocator *allocator)
+extern LZMA_API(lzma_ret) lzma_index_cat(lzma_index *dest, lzma_index *src,
+		const lzma_allocator *allocator)
 		lzma_nothrow lzma_attr_warn_unused_result;
 
 
@@ -575,7 +575,7 @@ extern LZMA_API(lzma_ret) lzma_index_cat(
  * \return      A copy of the lzma_index, or NULL if memory allocation failed.
  */
 extern LZMA_API(lzma_index *) lzma_index_dup(
-		const lzma_index *i, lzma_allocator *allocator)
+		const lzma_index *i, const lzma_allocator *allocator)
 		lzma_nothrow lzma_attr_warn_unused_result;
 
 
@@ -677,6 +677,6 @@ extern LZMA_API(lzma_ret) lzma_index_buffer_encode(const lzma_index *i,
  *              - LZMA_PROG_ERROR
  */
 extern LZMA_API(lzma_ret) lzma_index_buffer_decode(lzma_index **i,
-		uint64_t *memlimit, lzma_allocator *allocator,
+		uint64_t *memlimit, const lzma_allocator *allocator,
 		const uint8_t *in, size_t *in_pos, size_t in_size)
 		lzma_nothrow;

src/liblzma/api/lzma/index_hash.h

@@ -37,7 +37,7 @@ typedef struct lzma_index_hash_s lzma_index_hash;
  * pointer than the index_hash that was given as an argument.
  */
 extern LZMA_API(lzma_index_hash *) lzma_index_hash_init(
-		lzma_index_hash *index_hash, lzma_allocator *allocator)
+		lzma_index_hash *index_hash, const lzma_allocator *allocator)
 		lzma_nothrow lzma_attr_warn_unused_result;
 
 
@@ -45,7 +45,7 @@ extern LZMA_API(lzma_index_hash *) lzma_index_hash_init(
  * \brief       Deallocate lzma_index_hash structure
  */
 extern LZMA_API(void) lzma_index_hash_end(
-		lzma_index_hash *index_hash, lzma_allocator *allocator)
+		lzma_index_hash *index_hash, const lzma_allocator *allocator)
 		lzma_nothrow;
 
 

src/liblzma/api/lzma/lzma12.h

@@ -1,5 +1,5 @@
 /**
- * \file        lzma/lzma.h
+ * \file        lzma/lzma12.h
  * \brief       LZMA1 and LZMA2 filters
  */
 

src/liblzma/api/lzma/version.h

@@ -21,9 +21,9 @@
  * Version number split into components
  */
 #define LZMA_VERSION_MAJOR 5
-#define LZMA_VERSION_MINOR 0
-#define LZMA_VERSION_PATCH 7
-#define LZMA_VERSION_STABILITY LZMA_VERSION_STABILITY_STABLE
+#define LZMA_VERSION_MINOR 1
+#define LZMA_VERSION_PATCH 4
+#define LZMA_VERSION_STABILITY LZMA_VERSION_STABILITY_BETA
 
 #ifndef LZMA_VERSION_COMMIT
 #	define LZMA_VERSION_COMMIT ""

src/liblzma/check/Makefile.inc

@@ -47,5 +47,7 @@ endif
 endif
 
 if COND_CHECK_SHA256
+if COND_INTERNAL_SHA256
 liblzma_la_SOURCES += check/sha256.c
 endif
+endif

src/liblzma/check/check.h

@@ -15,6 +15,43 @@
 
 #include "common.h"
 
+#if defined(HAVE_COMMONCRYPTO_COMMONDIGEST_H)
+#	include <CommonCrypto/CommonDigest.h>
+#elif defined(HAVE_SHA256_H)
+#	include <sys/types.h>
+#	include <sha256.h>
+#elif defined(HAVE_SHA2_H)
+#	include <sys/types.h>
+#	include <sha2.h>
+#elif defined(HAVE_MINIX_SHA2_H)
+#	include <sys/types.h>
+#	include <minix/sha2.h>
+#endif
+
+#if defined(HAVE_CC_SHA256_CTX)
+typedef CC_SHA256_CTX lzma_sha256_state;
+#elif defined(HAVE_SHA256_CTX)
+typedef SHA256_CTX lzma_sha256_state;
+#elif defined(HAVE_SHA2_CTX)
+typedef SHA2_CTX lzma_sha256_state;
+#else
+/// State for the internal SHA-256 implementation
+typedef struct {
+	/// Internal state
+	uint32_t state[8];
+
+	/// Size of the message excluding padding
+	uint64_t size;
+} lzma_sha256_state;
+#endif
+
+#if defined(HAVE_CC_SHA256_INIT)
+#	define LZMA_SHA256FUNC(x) CC_SHA256_ ## x
+#elif defined(HAVE_SHA256_INIT)
+#	define LZMA_SHA256FUNC(x) SHA256_ ## x
+#elif defined(HAVE_SHA256INIT)
+#	define LZMA_SHA256FUNC(x) SHA256 ## x
+#endif
 
 // Index hashing needs the best possible hash function (preferably
 // a cryptographic hash) for maximum reliability.
@@ -43,14 +80,7 @@ typedef struct {
 	union {
 		uint32_t crc32;
 		uint64_t crc64;
-
-		struct {
-			/// Internal state
-			uint32_t state[8];
-
-			/// Size of the message excluding padding
-			uint64_t size;
-		} sha256;
+		lzma_sha256_state sha256;
 	} state;
 
 } lzma_check_state;
@@ -82,6 +112,8 @@ extern void lzma_check_update(lzma_check_state *check, lzma_check type,
 extern void lzma_check_finish(lzma_check_state *check, lzma_check type);
 
 
+#ifndef LZMA_SHA256FUNC
+
 /// Prepare SHA-256 state for new input.
 extern void lzma_sha256_init(lzma_check_state *check);
 
@@ -92,4 +124,39 @@ extern void lzma_sha256_update(
 /// Finish the SHA-256 calculation and store the result to check->buffer.u8.
 extern void lzma_sha256_finish(lzma_check_state *check);
 
+
+#else
+
+static inline void
+lzma_sha256_init(lzma_check_state *check)
+{
+	LZMA_SHA256FUNC(Init)(&check->state.sha256);
+}
+
+
+static inline void
+lzma_sha256_update(const uint8_t *buf, size_t size, lzma_check_state *check)
+{
+#if defined(HAVE_CC_SHA256_INIT) && SIZE_MAX > UINT32_MAX
+	// Darwin's CC_SHA256_Update takes uint32_t as the buffer size,
+	// so use a loop to support size_t.
+	while (size > UINT32_MAX) {
+		LZMA_SHA256FUNC(Update)(&check->state.sha256, buf, UINT32_MAX);
+		buf += UINT32_MAX;
+		size -= UINT32_MAX;
+	}
+#endif
+
+	LZMA_SHA256FUNC(Update)(&check->state.sha256, buf, size);
+}
+
+
+static inline void
+lzma_sha256_finish(lzma_check_state *check)
+{
+	LZMA_SHA256FUNC(Final)(check->buffer.u8, &check->state.sha256);
+}
+
+#endif
+
 #endif

src/liblzma/check/sha256.c

@@ -21,22 +21,22 @@
 //
 ///////////////////////////////////////////////////////////////////////////////
 
-// Avoid bogus warnings in transform().
-#if (__GNUC__ == 4 && __GNUC_MINOR__ >= 2) || __GNUC__ > 4
-#	pragma GCC diagnostic ignored "-Wuninitialized"
-#endif
-
 #include "check.h"
 
-// At least on x86, GCC is able to optimize this to a rotate instruction.
-#define rotr_32(num, amount) ((num) >> (amount) | (num) << (32 - (amount)))
+// Rotate a uint32_t. GCC can optimize this to a rotate instruction
+// at least on x86.
+static inline uint32_t
+rotr_32(uint32_t num, unsigned amount)
+{
+        return (num >> amount) | (num << (32 - amount));
+}
 
-#define blk0(i) (W[i] = data[i])
+#define blk0(i) (W[i] = conv32be(data[i]))
 #define blk2(i) (W[i & 15] += s1(W[(i - 2) & 15]) + W[(i - 7) & 15] \
 		+ s0(W[(i - 15) & 15]))
 
 #define Ch(x, y, z) (z ^ (x & (y ^ z)))
-#define Maj(x, y, z) ((x & y) | (z & (x | y)))
+#define Maj(x, y, z) ((x & (y ^ z)) + (y & z))
 
 #define a(i) T[(0 - i) & 7]
 #define b(i) T[(1 - i) & 7]
@@ -47,16 +47,17 @@
 #define g(i) T[(6 - i) & 7]
 #define h(i) T[(7 - i) & 7]
 
-#define R(i) \
-	h(i) += S1(e(i)) + Ch(e(i), f(i), g(i)) + SHA256_K[i + j] \
-		+ (j ? blk2(i) : blk0(i)); \
+#define R(i, j, blk) \
+	h(i) += S1(e(i)) + Ch(e(i), f(i), g(i)) + SHA256_K[i + j] + blk; \
 	d(i) += h(i); \
 	h(i) += S0(a(i)) + Maj(a(i), b(i), c(i))
+#define R0(i) R(i, 0, blk0(i))
+#define R2(i) R(i, j, blk2(i))
 
-#define S0(x) (rotr_32(x, 2) ^ rotr_32(x, 13) ^ rotr_32(x, 22))
-#define S1(x) (rotr_32(x, 6) ^ rotr_32(x, 11) ^ rotr_32(x, 25))
-#define s0(x) (rotr_32(x, 7) ^ rotr_32(x, 18) ^ (x >> 3))
-#define s1(x) (rotr_32(x, 17) ^ rotr_32(x, 19) ^ (x >> 10))
+#define S0(x) rotr_32(x ^ rotr_32(x ^ rotr_32(x, 9), 11), 2)
+#define S1(x) rotr_32(x ^ rotr_32(x ^ rotr_32(x, 14), 5), 6)
+#define s0(x) (rotr_32(x ^ rotr_32(x, 11), 7) ^ (x >> 3))
+#define s1(x) (rotr_32(x ^ rotr_32(x, 2), 17) ^ (x >> 10))
 
 
 static const uint32_t SHA256_K[64] = {
@@ -88,12 +89,18 @@ transform(uint32_t state[8], const uint32_t data[16])
 	// Copy state[] to working vars.
 	memcpy(T, state, sizeof(T));
 
-	// 64 operations, partially loop unrolled
-	for (unsigned int j = 0; j < 64; j += 16) {
-		R( 0); R( 1); R( 2); R( 3);
-		R( 4); R( 5); R( 6); R( 7);
-		R( 8); R( 9); R(10); R(11);
-		R(12); R(13); R(14); R(15);
+	// The first 16 operations unrolled
+	R0( 0); R0( 1); R0( 2); R0( 3);
+	R0( 4); R0( 5); R0( 6); R0( 7);
+	R0( 8); R0( 9); R0(10); R0(11);
+	R0(12); R0(13); R0(14); R0(15);
+
+	// The remaining 48 operations partially unrolled
+	for (unsigned int j = 16; j < 64; j += 16) {
+		R2( 0); R2( 1); R2( 2); R2( 3);
+		R2( 4); R2( 5); R2( 6); R2( 7);
+		R2( 8); R2( 9); R2(10); R2(11);
+		R2(12); R2(13); R2(14); R2(15);
 	}
 
 	// Add the working vars back into state[].
@@ -111,18 +118,7 @@ transform(uint32_t state[8], const uint32_t data[16])
 static void
 process(lzma_check_state *check)
 {
-#ifdef WORDS_BIGENDIAN
 	transform(check->state.sha256.state, check->buffer.u32);
-
-#else
-	uint32_t data[16];
-
-	for (size_t i = 0; i < 16; ++i)
-		data[i] = bswap32(check->buffer.u32[i]);
-
-	transform(check->state.sha256.state, data);
-#endif
-
 	return;
 }
 

src/liblzma/common/Makefile.inc

@@ -8,6 +8,7 @@
 liblzma_la_SOURCES += \
 	common/common.c \
 	common/common.h \
+	common/memcmplen.h \
 	common/block_util.c \
 	common/easy_preset.c \
 	common/easy_preset.h \
@@ -24,6 +25,7 @@ if COND_MAIN_ENCODER
 liblzma_la_SOURCES += \
 	common/alone_encoder.c \
 	common/block_buffer_encoder.c \
+	common/block_buffer_encoder.h \
 	common/block_encoder.c \
 	common/block_encoder.h \
 	common/block_header_encoder.c \
@@ -38,9 +40,16 @@ liblzma_la_SOURCES += \
 	common/index_encoder.h \
 	common/stream_buffer_encoder.c \
 	common/stream_encoder.c \
-	common/stream_encoder.h \
 	common/stream_flags_encoder.c \
 	common/vli_encoder.c
+
+if COND_THREADS
+liblzma_la_SOURCES += \
+	common/hardware_cputhreads.c \
+	common/outqueue.c \
+	common/outqueue.h \
+	common/stream_encoder_mt.c
+endif
 endif
 
 if COND_MAIN_DECODER

src/liblzma/common/alone_decoder.c

@@ -51,7 +51,7 @@ struct lzma_coder_s {
 
 static lzma_ret
 alone_decode(lzma_coder *coder,
-		lzma_allocator *allocator lzma_attribute((__unused__)),
+		const lzma_allocator *allocator lzma_attribute((__unused__)),
 		const uint8_t *restrict in, size_t *restrict in_pos,
 		size_t in_size, uint8_t *restrict out,
 		size_t *restrict out_pos, size_t out_size,
@@ -166,7 +166,7 @@ alone_decode(lzma_coder *coder,
 
 
 static void
-alone_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
+alone_decoder_end(lzma_coder *coder, const lzma_allocator *allocator)
 {
 	lzma_next_end(&coder->next, allocator);
 	lzma_free(coder, allocator);
@@ -193,7 +193,7 @@ alone_decoder_memconfig(lzma_coder *coder, uint64_t *memusage,
 
 
 extern lzma_ret
-lzma_alone_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+lzma_alone_decoder_init(lzma_next_coder *next, const lzma_allocator *allocator,
 		uint64_t memlimit, bool picky)
 {
 	lzma_next_coder_init(&lzma_alone_decoder_init, next, allocator);

src/liblzma/common/alone_decoder.h

@@ -17,7 +17,7 @@
 
 
 extern lzma_ret lzma_alone_decoder_init(
-		lzma_next_coder *next, lzma_allocator *allocator,
+		lzma_next_coder *next, const lzma_allocator *allocator,
 		uint64_t memlimit, bool picky);
 
 #endif

src/liblzma/common/alone_encoder.c

@@ -32,7 +32,7 @@ struct lzma_coder_s {
 
 static lzma_ret
 alone_encode(lzma_coder *coder,
-		lzma_allocator *allocator lzma_attribute((__unused__)),
+		const lzma_allocator *allocator lzma_attribute((__unused__)),
 		const uint8_t *restrict in, size_t *restrict in_pos,
 		size_t in_size, uint8_t *restrict out,
 		size_t *restrict out_pos, size_t out_size,
@@ -65,7 +65,7 @@ alone_encode(lzma_coder *coder,
 
 
 static void
-alone_encoder_end(lzma_coder *coder, lzma_allocator *allocator)
+alone_encoder_end(lzma_coder *coder, const lzma_allocator *allocator)
 {
 	lzma_next_end(&coder->next, allocator);
 	lzma_free(coder, allocator);
@@ -75,7 +75,7 @@ alone_encoder_end(lzma_coder *coder, lzma_allocator *allocator)
 
 // At least for now, this is not used by any internal function.
 static lzma_ret
-alone_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+alone_encoder_init(lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_options_lzma *options)
 {
 	lzma_next_coder_init(&alone_encoder_init, next, allocator);
@@ -137,7 +137,7 @@ alone_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
 
 /*
 extern lzma_ret
-lzma_alone_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+lzma_alone_encoder_init(lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_options_alone *options)
 {
 	lzma_next_coder_init(&alone_encoder_init, next, allocator, options);

src/liblzma/common/auto_decoder.c

@@ -30,7 +30,7 @@ struct lzma_coder_s {
 
 
 static lzma_ret
-auto_decode(lzma_coder *coder, lzma_allocator *allocator,
+auto_decode(lzma_coder *coder, const lzma_allocator *allocator,
 		const uint8_t *restrict in, size_t *restrict in_pos,
 		size_t in_size, uint8_t *restrict out,
 		size_t *restrict out_pos, size_t out_size, lzma_action action)
@@ -100,7 +100,7 @@ auto_decode(lzma_coder *coder, lzma_allocator *allocator,
 
 
 static void
-auto_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
+auto_decoder_end(lzma_coder *coder, const lzma_allocator *allocator)
 {
 	lzma_next_end(&coder->next, allocator);
 	lzma_free(coder, allocator);
@@ -143,7 +143,7 @@ auto_decoder_memconfig(lzma_coder *coder, uint64_t *memusage,
 
 
 static lzma_ret
-auto_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+auto_decoder_init(lzma_next_coder *next, const lzma_allocator *allocator,
 		uint64_t memlimit, uint32_t flags)
 {
 	lzma_next_coder_init(&auto_decoder_init, next, allocator);

src/liblzma/common/block_buffer_decoder.c

@@ -14,7 +14,7 @@
 
 
 extern LZMA_API(lzma_ret)
-lzma_block_buffer_decode(lzma_block *block, lzma_allocator *allocator,
+lzma_block_buffer_decode(lzma_block *block, const lzma_allocator *allocator,
 		const uint8_t *in, size_t *in_pos, size_t in_size,
 		uint8_t *out, size_t *out_pos, size_t out_size)
 {

src/liblzma/common/block_buffer_encoder.c

@@ -10,6 +10,7 @@
 //
 ///////////////////////////////////////////////////////////////////////////////
 
+#include "block_buffer_encoder.h"
 #include "block_encoder.h"
 #include "filter_encoder.h"
 #include "lzma2_encoder.h"
@@ -28,8 +29,8 @@
 		+ LZMA_CHECK_SIZE_MAX + 3) & ~3)
 
 
-static lzma_vli
-lzma2_bound(lzma_vli uncompressed_size)
+static uint64_t
+lzma2_bound(uint64_t uncompressed_size)
 {
 	// Prevent integer overflow in overhead calculation.
 	if (uncompressed_size > COMPRESSED_SIZE_MAX)
@@ -39,7 +40,7 @@ lzma2_bound(lzma_vli uncompressed_size)
 	// uncompressed_size up to the next multiple of LZMA2_CHUNK_MAX,
 	// multiply by the size of per-chunk header, and add one byte for
 	// the end marker.
-	const lzma_vli overhead = ((uncompressed_size + LZMA2_CHUNK_MAX - 1)
+	const uint64_t overhead = ((uncompressed_size + LZMA2_CHUNK_MAX - 1)
 				/ LZMA2_CHUNK_MAX)
 			* LZMA2_HEADER_UNCOMPRESSED + 1;
 
@@ -51,30 +52,36 @@ lzma2_bound(lzma_vli uncompressed_size)
 }
 
 
-extern LZMA_API(size_t)
-lzma_block_buffer_bound(size_t uncompressed_size)
+extern uint64_t
+lzma_block_buffer_bound64(uint64_t uncompressed_size)
 {
-	// For now, if the data doesn't compress, we always use uncompressed
-	// chunks of LZMA2. In future we may use Subblock filter too, but
-	// but for simplicity we probably will still use the same bound
-	// calculation even though Subblock filter would have slightly less
-	// overhead.
-	lzma_vli lzma2_size = lzma2_bound(uncompressed_size);
+	// If the data doesn't compress, we always use uncompressed
+	// LZMA2 chunks.
+	uint64_t lzma2_size = lzma2_bound(uncompressed_size);
 	if (lzma2_size == 0)
 		return 0;
 
 	// Take Block Padding into account.
-	lzma2_size = (lzma2_size + 3) & ~LZMA_VLI_C(3);
+	lzma2_size = (lzma2_size + 3) & ~UINT64_C(3);
 
-#if SIZE_MAX < LZMA_VLI_MAX
-	// Catch the possible integer overflow on 32-bit systems. There's no
-	// overflow on 64-bit systems, because lzma2_bound() already takes
+	// No risk of integer overflow because lzma2_bound() already takes
 	// into account the size of the headers in the Block.
-	if (SIZE_MAX - HEADERS_BOUND < lzma2_size)
+	return HEADERS_BOUND + lzma2_size;
+}
+
+
+extern LZMA_API(size_t)
+lzma_block_buffer_bound(size_t uncompressed_size)
+{
+	uint64_t ret = lzma_block_buffer_bound64(uncompressed_size);
+
+#if SIZE_MAX < UINT64_MAX
+	// Catch the possible integer overflow on 32-bit systems.
+	if (ret > SIZE_MAX)
 		return 0;
 #endif
 
-	return HEADERS_BOUND + lzma2_size;
+	return ret;
 }
 
 
@@ -82,9 +89,6 @@ static lzma_ret
 block_encode_uncompressed(lzma_block *block, const uint8_t *in, size_t in_size,
 		uint8_t *out, size_t *out_pos, size_t out_size)
 {
-	// TODO: Figure out if the last filter is LZMA2 or Subblock and use
-	// that filter to encode the uncompressed chunks.
-
 	// Use LZMA2 uncompressed chunks. We wouldn't need a dictionary at
 	// all, but LZMA2 always requires a dictionary, so use the minimum
 	// value to minimize memory usage of the decoder.
@@ -160,16 +164,11 @@ block_encode_uncompressed(lzma_block *block, const uint8_t *in, size_t in_size,
 
 
 static lzma_ret
-block_encode_normal(lzma_block *block, lzma_allocator *allocator,
+block_encode_normal(lzma_block *block, const lzma_allocator *allocator,
 		const uint8_t *in, size_t in_size,
 		uint8_t *out, size_t *out_pos, size_t out_size)
 {
 	// Find out the size of the Block Header.
-	block->compressed_size = lzma2_bound(in_size);
-	if (block->compressed_size == 0)
-		return LZMA_DATA_ERROR;
-
-	block->uncompressed_size = in_size;
 	return_if_error(lzma_block_header_size(block));
 
 	// Reserve space for the Block Header and skip it for now.
@@ -221,10 +220,11 @@ block_encode_normal(lzma_block *block, lzma_allocator *allocator,
 }
 
 
-extern LZMA_API(lzma_ret)
-lzma_block_buffer_encode(lzma_block *block, lzma_allocator *allocator,
+static lzma_ret
+block_buffer_encode(lzma_block *block, const lzma_allocator *allocator,
 		const uint8_t *in, size_t in_size,
-		uint8_t *out, size_t *out_pos, size_t out_size)
+		uint8_t *out, size_t *out_pos, size_t out_size,
+		bool try_to_compress)
 {
 	// Validate the arguments.
 	if (block == NULL || (in == NULL && in_size != 0) || out == NULL
@@ -233,11 +233,11 @@ lzma_block_buffer_encode(lzma_block *block, lzma_allocator *allocator,
 
 	// The contents of the structure may depend on the version so
 	// check the version before validating the contents of *block.
-	if (block->version != 0)
+	if (block->version > 1)
 		return LZMA_OPTIONS_ERROR;
 
 	if ((unsigned int)(block->check) > LZMA_CHECK_ID_MAX
-			|| block->filters == NULL)
+			|| (try_to_compress && block->filters == NULL))
 		return LZMA_PROG_ERROR;
 
 	if (!lzma_check_is_supported(block->check))
@@ -258,9 +258,19 @@ lzma_block_buffer_encode(lzma_block *block, lzma_allocator *allocator,
 
 	out_size -= check_size;
 
+	// Initialize block->uncompressed_size and calculate the worst-case
+	// value for block->compressed_size.
+	block->uncompressed_size = in_size;
+	block->compressed_size = lzma2_bound(in_size);
+	if (block->compressed_size == 0)
+		return LZMA_DATA_ERROR;
+
 	// Do the actual compression.
-	const lzma_ret ret = block_encode_normal(block, allocator,
-			in, in_size, out, out_pos, out_size);
+	lzma_ret ret = LZMA_BUF_ERROR;
+	if (try_to_compress)
+		ret = block_encode_normal(block, allocator,
+				in, in_size, out, out_pos, out_size);
+
 	if (ret != LZMA_OK) {
 		// If the error was something else than output buffer
 		// becoming full, return the error now.
@@ -303,3 +313,25 @@ lzma_block_buffer_encode(lzma_block *block, lzma_allocator *allocator,
 
 	return LZMA_OK;
 }
+
+
+extern LZMA_API(lzma_ret)
+lzma_block_buffer_encode(lzma_block *block, const lzma_allocator *allocator,
+		const uint8_t *in, size_t in_size,
+		uint8_t *out, size_t *out_pos, size_t out_size)
+{
+	return block_buffer_encode(block, allocator,
+			in, in_size, out, out_pos, out_size, true);
+}
+
+
+extern LZMA_API(lzma_ret)
+lzma_block_uncomp_encode(lzma_block *block,
+		const uint8_t *in, size_t in_size,
+		uint8_t *out, size_t *out_pos, size_t out_size)
+{
+	// It won't allocate any memory from heap so no need
+	// for lzma_allocator.
+	return block_buffer_encode(block, NULL,
+			in, in_size, out, out_pos, out_size, false);
+}

src/liblzma/common/block_buffer_encoder.h

@@ -0,0 +1,24 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       block_buffer_encoder.h
+/// \brief      Single-call .xz Block encoder
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_BLOCK_BUFFER_ENCODER_H
+#define LZMA_BLOCK_BUFFER_ENCODER_H
+
+#include "common.h"
+
+
+/// uint64_t version of lzma_block_buffer_bound(). It is used by
+/// stream_encoder_mt.c. Probably the original lzma_block_buffer_bound()
+/// should have been 64-bit, but fixing it would break the ABI.
+extern uint64_t lzma_block_buffer_bound64(uint64_t uncompressed_size);
+
+#endif

src/liblzma/common/block_decoder.c

@@ -45,6 +45,9 @@ struct lzma_coder_s {
 
 	/// Check of the uncompressed data
 	lzma_check_state check;
+
+	/// True if the integrity check won't be calculated and verified.
+	bool ignore_check;
 };
 
 
@@ -71,7 +74,7 @@ is_size_valid(lzma_vli size, lzma_vli reference)
 
 
 static lzma_ret
-block_decode(lzma_coder *coder, lzma_allocator *allocator,
+block_decode(lzma_coder *coder, const lzma_allocator *allocator,
 		const uint8_t *restrict in, size_t *restrict in_pos,
 		size_t in_size, uint8_t *restrict out,
 		size_t *restrict out_pos, size_t out_size, lzma_action action)
@@ -97,8 +100,9 @@ block_decode(lzma_coder *coder, lzma_allocator *allocator,
 					coder->block->uncompressed_size))
 			return LZMA_DATA_ERROR;
 
-		lzma_check_update(&coder->check, coder->block->check,
-				out + out_start, out_used);
+		if (!coder->ignore_check)
+			lzma_check_update(&coder->check, coder->block->check,
+					out + out_start, out_used);
 
 		if (ret != LZMA_STREAM_END)
 			return ret;
@@ -140,7 +144,9 @@ block_decode(lzma_coder *coder, lzma_allocator *allocator,
 		if (coder->block->check == LZMA_CHECK_NONE)
 			return LZMA_STREAM_END;
 
-		lzma_check_finish(&coder->check, coder->block->check);
+		if (!coder->ignore_check)
+			lzma_check_finish(&coder->check, coder->block->check);
+
 		coder->sequence = SEQ_CHECK;
 
 	// Fall through
@@ -155,7 +161,8 @@ block_decode(lzma_coder *coder, lzma_allocator *allocator,
 		// Validate the Check only if we support it.
 		// coder->check.buffer may be uninitialized
 		// when the Check ID is not supported.
-		if (lzma_check_is_supported(coder->block->check)
+		if (!coder->ignore_check
+				&& lzma_check_is_supported(coder->block->check)
 				&& memcmp(coder->block->raw_check,
 					coder->check.buffer.u8,
 					check_size) != 0)
@@ -170,7 +177,7 @@ block_decode(lzma_coder *coder, lzma_allocator *allocator,
 
 
 static void
-block_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
+block_decoder_end(lzma_coder *coder, const lzma_allocator *allocator)
 {
 	lzma_next_end(&coder->next, allocator);
 	lzma_free(coder, allocator);
@@ -179,7 +186,7 @@ block_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
 
 
 extern lzma_ret
-lzma_block_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+lzma_block_decoder_init(lzma_next_coder *next, const lzma_allocator *allocator,
 		lzma_block *block)
 {
 	lzma_next_coder_init(&lzma_block_decoder_init, next, allocator);
@@ -224,6 +231,9 @@ lzma_block_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
 	next->coder->check_pos = 0;
 	lzma_check_init(&next->coder->check, block->check);
 
+	next->coder->ignore_check = block->version >= 1
+			? block->ignore_check : false;
+
 	// Initialize the filter chain.
 	return lzma_raw_decoder_init(&next->coder->next, allocator,
 			block->filters);

src/liblzma/common/block_decoder.h

@@ -17,6 +17,6 @@
 
 
 extern lzma_ret lzma_block_decoder_init(lzma_next_coder *next,
-		lzma_allocator *allocator, lzma_block *block);
+		const lzma_allocator *allocator, lzma_block *block);
 
 #endif

src/liblzma/common/block_encoder.c

@@ -45,7 +45,7 @@ struct lzma_coder_s {
 
 
 static lzma_ret
-block_encode(lzma_coder *coder, lzma_allocator *allocator,
+block_encode(lzma_coder *coder, const lzma_allocator *allocator,
 		const uint8_t *restrict in, size_t *restrict in_pos,
 		size_t in_size, uint8_t *restrict out,
 		size_t *restrict out_pos, size_t out_size, lzma_action action)
@@ -134,7 +134,7 @@ block_encode(lzma_coder *coder, lzma_allocator *allocator,
 
 
 static void
-block_encoder_end(lzma_coder *coder, lzma_allocator *allocator)
+block_encoder_end(lzma_coder *coder, const lzma_allocator *allocator)
 {
 	lzma_next_end(&coder->next, allocator);
 	lzma_free(coder, allocator);
@@ -143,7 +143,7 @@ block_encoder_end(lzma_coder *coder, lzma_allocator *allocator)
 
 
 static lzma_ret
-block_encoder_update(lzma_coder *coder, lzma_allocator *allocator,
+block_encoder_update(lzma_coder *coder, const lzma_allocator *allocator,
 		const lzma_filter *filters lzma_attribute((__unused__)),
 		const lzma_filter *reversed_filters)
 {
@@ -156,7 +156,7 @@ block_encoder_update(lzma_coder *coder, lzma_allocator *allocator,
 
 
 extern lzma_ret
-lzma_block_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+lzma_block_encoder_init(lzma_next_coder *next, const lzma_allocator *allocator,
 		lzma_block *block)
 {
 	lzma_next_coder_init(&lzma_block_encoder_init, next, allocator);
@@ -166,7 +166,7 @@ lzma_block_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
 
 	// The contents of the structure may depend on the version so
 	// check the version first.
-	if (block->version != 0)
+	if (block->version > 1)
 		return LZMA_OPTIONS_ERROR;
 
 	// If the Check ID is not supported, we cannot calculate the check and

src/liblzma/common/block_encoder.h

@@ -42,6 +42,6 @@
 
 
 extern lzma_ret lzma_block_encoder_init(lzma_next_coder *next,
-		lzma_allocator *allocator, lzma_block *block);
+		const lzma_allocator *allocator, lzma_block *block);
 
 #endif

src/liblzma/common/block_header_decoder.c

@@ -15,7 +15,7 @@
 
 
 static void
-free_properties(lzma_block *block, lzma_allocator *allocator)
+free_properties(lzma_block *block, const lzma_allocator *allocator)
 {
 	// Free allocated filter options. The last array member is not
 	// touched after the initialization in the beginning of
@@ -32,7 +32,7 @@ free_properties(lzma_block *block, lzma_allocator *allocator)
 
 extern LZMA_API(lzma_ret)
 lzma_block_header_decode(lzma_block *block,
-		lzma_allocator *allocator, const uint8_t *in)
+		const lzma_allocator *allocator, const uint8_t *in)
 {
 	// NOTE: We consider the header to be corrupt not only when the
 	// CRC32 doesn't match, but also when variable-length integers
@@ -46,8 +46,16 @@ lzma_block_header_decode(lzma_block *block,
 		block->filters[i].options = NULL;
 	}
 
-	// Always zero for now.
-	block->version = 0;
+	// Versions 0 and 1 are supported. If a newer version was specified,
+	// we need to downgrade it.
+	if (block->version > 1)
+		block->version = 1;
+
+	// This isn't a Block Header option, but since the decompressor will
+	// read it if version >= 1, it's better to initialize it here than
+	// to expect the caller to do it since in almost all cases this
+	// should be false.
+	block->ignore_check = false;
 
 	// Validate Block Header Size and Check type. The caller must have
 	// already set these, so it is a programming error if this test fails.

src/liblzma/common/block_header_encoder.c

@@ -17,7 +17,7 @@
 extern LZMA_API(lzma_ret)
 lzma_block_header_size(lzma_block *block)
 {
-	if (block->version != 0)
+	if (block->version > 1)
 		return LZMA_OPTIONS_ERROR;
 
 	// Block Header Size + Block Flags + CRC32.

src/liblzma/common/block_util.c

@@ -51,7 +51,7 @@ lzma_block_unpadded_size(const lzma_block *block)
 	// NOTE: This function is used for validation too, so it is
 	// essential that these checks are always done even if
 	// Compressed Size is unknown.
-	if (block == NULL || block->version != 0
+	if (block == NULL || block->version > 1
 			|| block->header_size < LZMA_BLOCK_HEADER_SIZE_MIN
 			|| block->header_size > LZMA_BLOCK_HEADER_SIZE_MAX
 			|| (block->header_size & 3)

src/liblzma/common/common.c

@@ -36,7 +36,7 @@ lzma_version_string(void)
 ///////////////////////
 
 extern void * lzma_attribute((__malloc__)) lzma_attr_alloc_size(1)
-lzma_alloc(size_t size, lzma_allocator *allocator)
+lzma_alloc(size_t size, const lzma_allocator *allocator)
 {
 	// Some malloc() variants return NULL if called with size == 0.
 	if (size == 0)
@@ -53,8 +53,29 @@ lzma_alloc(size_t size, lzma_allocator *allocator)
 }
 
 
+extern void * lzma_attribute((__malloc__)) lzma_attr_alloc_size(1)
+lzma_alloc_zero(size_t size, const lzma_allocator *allocator)
+{
+	// Some calloc() variants return NULL if called with size == 0.
+	if (size == 0)
+		size = 1;
+
+	void *ptr;
+
+	if (allocator != NULL && allocator->alloc != NULL) {
+		ptr = allocator->alloc(allocator->opaque, 1, size);
+		if (ptr != NULL)
+			memzero(ptr, size);
+	} else {
+		ptr = calloc(1, size);
+	}
+
+	return ptr;
+}
+
+
 extern void
-lzma_free(void *ptr, lzma_allocator *allocator)
+lzma_free(void *ptr, const lzma_allocator *allocator)
 {
 	if (allocator != NULL && allocator->free != NULL)
 		allocator->free(allocator->opaque, ptr);
@@ -88,7 +109,7 @@ lzma_bufcpy(const uint8_t *restrict in, size_t *restrict in_pos,
 
 
 extern lzma_ret
-lzma_next_filter_init(lzma_next_coder *next, lzma_allocator *allocator,
+lzma_next_filter_init(lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter_info *filters)
 {
 	lzma_next_coder_init(filters[0].init, next, allocator);
@@ -99,7 +120,7 @@ lzma_next_filter_init(lzma_next_coder *next, lzma_allocator *allocator,
 
 
 extern lzma_ret
-lzma_next_filter_update(lzma_next_coder *next, lzma_allocator *allocator,
+lzma_next_filter_update(lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter *reversed_filters)
 {
 	// Check that the application isn't trying to change the Filter ID.
@@ -117,7 +138,7 @@ lzma_next_filter_update(lzma_next_coder *next, lzma_allocator *allocator,
 
 
 extern void
-lzma_next_end(lzma_next_coder *next, lzma_allocator *allocator)
+lzma_next_end(lzma_next_coder *next, const lzma_allocator *allocator)
 {
 	if (next->init != (uintptr_t)(NULL)) {
 		// To avoid tiny end functions that simply call
@@ -156,10 +177,8 @@ lzma_strm_init(lzma_stream *strm)
 		strm->internal->next = LZMA_NEXT_CODER_INIT;
 	}
 
-	strm->internal->supported_actions[LZMA_RUN] = false;
-	strm->internal->supported_actions[LZMA_SYNC_FLUSH] = false;
-	strm->internal->supported_actions[LZMA_FULL_FLUSH] = false;
-	strm->internal->supported_actions[LZMA_FINISH] = false;
+	memzero(strm->internal->supported_actions,
+			sizeof(strm->internal->supported_actions));
 	strm->internal->sequence = ISEQ_RUN;
 	strm->internal->allow_buf_error = false;
 
@@ -178,7 +197,7 @@ lzma_code(lzma_stream *strm, lzma_action action)
 			|| (strm->next_out == NULL && strm->avail_out != 0)
 			|| strm->internal == NULL
 			|| strm->internal->next.code == NULL
-			|| (unsigned int)(action) > LZMA_FINISH
+			|| (unsigned int)(action) > LZMA_ACTION_MAX
 			|| !strm->internal->supported_actions[action])
 		return LZMA_PROG_ERROR;
 
@@ -213,6 +232,10 @@ lzma_code(lzma_stream *strm, lzma_action action)
 		case LZMA_FINISH:
 			strm->internal->sequence = ISEQ_FINISH;
 			break;
+
+		case LZMA_FULL_BARRIER:
+			strm->internal->sequence = ISEQ_FULL_BARRIER;
+			break;
 		}
 
 		break;
@@ -240,6 +263,13 @@ lzma_code(lzma_stream *strm, lzma_action action)
 
 		break;
 
+	case ISEQ_FULL_BARRIER:
+		if (action != LZMA_FULL_BARRIER
+				|| strm->internal->avail_in != strm->avail_in)
+			return LZMA_PROG_ERROR;
+
+		break;
+
 	case ISEQ_END:
 		return LZMA_STREAM_END;
 
@@ -265,7 +295,9 @@ lzma_code(lzma_stream *strm, lzma_action action)
 
 	strm->internal->avail_in = strm->avail_in;
 
-	switch (ret) {
+	// Cast is needed to silence a warning about LZMA_TIMED_OUT, which
+	// isn't part of lzma_ret enumeration.
+	switch ((unsigned int)(ret)) {
 	case LZMA_OK:
 		// Don't return LZMA_BUF_ERROR when it happens the first time.
 		// This is to avoid returning LZMA_BUF_ERROR when avail_out
@@ -281,9 +313,16 @@ lzma_code(lzma_stream *strm, lzma_action action)
 		}
 		break;
 
+	case LZMA_TIMED_OUT:
+		strm->internal->allow_buf_error = false;
+		ret = LZMA_OK;
+		break;
+
 	case LZMA_STREAM_END:
 		if (strm->internal->sequence == ISEQ_SYNC_FLUSH
-				|| strm->internal->sequence == ISEQ_FULL_FLUSH)
+				|| strm->internal->sequence == ISEQ_FULL_FLUSH
+				|| strm->internal->sequence
+					== ISEQ_FULL_BARRIER)
 			strm->internal->sequence = ISEQ_RUN;
 		else
 			strm->internal->sequence = ISEQ_END;
@@ -323,6 +362,22 @@ lzma_end(lzma_stream *strm)
 }
 
 
+extern LZMA_API(void)
+lzma_get_progress(lzma_stream *strm,
+		uint64_t *progress_in, uint64_t *progress_out)
+{
+	if (strm->internal->next.get_progress != NULL) {
+		strm->internal->next.get_progress(strm->internal->next.coder,
+				progress_in, progress_out);
+	} else {
+		*progress_in = strm->total_in;
+		*progress_out = strm->total_out;
+	}
+
+	return;
+}
+
+
 extern LZMA_API(lzma_check)
 lzma_get_check(const lzma_stream *strm)
 {

src/liblzma/common/common.h

@@ -32,6 +32,8 @@
 
 #define LZMA_API(type) LZMA_API_EXPORT type LZMA_API_CALL
 
+#define LZMA_UNSTABLE
+
 #include "lzma.h"
 
 // These allow helping the compiler in some often-executed branches, whose
@@ -49,6 +51,13 @@
 #define LZMA_BUFFER_SIZE 4096
 
 
+/// Maximum number of worker threads within one multithreaded component.
+/// The limit exists solely to make it simpler to prevent integer overflows
+/// when allocating structures etc. This should be big enough for now...
+/// the code won't scale anywhere close to this number anyway.
+#define LZMA_THREADS_MAX 16384
+
+
 /// Starting value for memory usage estimates. Instead of calculating size
 /// of _every_ structure and taking into account malloc() overhead etc., we
 /// add a base size to all memory usage estimates. It's not very accurate
@@ -66,9 +75,21 @@
 	( LZMA_TELL_NO_CHECK \
 	| LZMA_TELL_UNSUPPORTED_CHECK \
 	| LZMA_TELL_ANY_CHECK \
+	| LZMA_IGNORE_CHECK \
 	| LZMA_CONCATENATED )
 
 
+/// Largest valid lzma_action value as unsigned integer.
+#define LZMA_ACTION_MAX ((unsigned int)(LZMA_FULL_BARRIER))
+
+
+/// Special return value (lzma_ret) to indicate that a timeout was reached
+/// and lzma_code() must not return LZMA_BUF_ERROR. This is converted to
+/// LZMA_OK in lzma_code(). This is not in the lzma_ret enumeration because
+/// there's no need to have it in the public API.
+#define LZMA_TIMED_OUT 32
+
+
 /// Type of encoder/decoder specific data; the actual structure is defined
 /// differently in different coders.
 typedef struct lzma_coder_s lzma_coder;
@@ -80,7 +101,7 @@ typedef struct lzma_filter_info_s lzma_filter_info;
 
 /// Type of a function used to initialize a filter encoder or decoder
 typedef lzma_ret (*lzma_init_function)(
-		lzma_next_coder *next, lzma_allocator *allocator,
+		lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter_info *filters);
 
 /// Type of a function to do some kind of coding work (filters, Stream,
@@ -88,7 +109,7 @@ typedef lzma_ret (*lzma_init_function)(
 /// input and output buffers, but for simplicity they still use this same
 /// function prototype.
 typedef lzma_ret (*lzma_code_function)(
-		lzma_coder *coder, lzma_allocator *allocator,
+		lzma_coder *coder, const lzma_allocator *allocator,
 		const uint8_t *restrict in, size_t *restrict in_pos,
 		size_t in_size, uint8_t *restrict out,
 		size_t *restrict out_pos, size_t out_size,
@@ -96,7 +117,7 @@ typedef lzma_ret (*lzma_code_function)(
 
 /// Type of a function to free the memory allocated for the coder
 typedef void (*lzma_end_function)(
-		lzma_coder *coder, lzma_allocator *allocator);
+		lzma_coder *coder, const lzma_allocator *allocator);
 
 
 /// Raw coder validates and converts an array of lzma_filter structures to
@@ -139,6 +160,11 @@ struct lzma_next_coder_s {
 	/// lzma_next_coder.coder.
 	lzma_end_function end;
 
+	/// Pointer to a function to get progress information. If this is NULL,
+	/// lzma_stream.total_in and .total_out are used instead.
+	void (*get_progress)(lzma_coder *coder,
+			uint64_t *progress_in, uint64_t *progress_out);
+
 	/// Pointer to function to return the type of the integrity check.
 	/// Most coders won't support this.
 	lzma_check (*get_check)(const lzma_coder *coder);
@@ -150,7 +176,7 @@ struct lzma_next_coder_s {
 
 	/// Update the filter-specific options or the whole filter chain
 	/// in the encoder.
-	lzma_ret (*update)(lzma_coder *coder, lzma_allocator *allocator,
+	lzma_ret (*update)(lzma_coder *coder, const lzma_allocator *allocator,
 			const lzma_filter *filters,
 			const lzma_filter *reversed_filters);
 };
@@ -164,6 +190,7 @@ struct lzma_next_coder_s {
 		.id = LZMA_VLI_UNKNOWN, \
 		.code = NULL, \
 		.end = NULL, \
+		.get_progress = NULL, \
 		.get_check = NULL, \
 		.memconfig = NULL, \
 		.update = NULL, \
@@ -185,6 +212,7 @@ struct lzma_internal_s {
 		ISEQ_SYNC_FLUSH,
 		ISEQ_FULL_FLUSH,
 		ISEQ_FINISH,
+		ISEQ_FULL_BARRIER,
 		ISEQ_END,
 		ISEQ_ERROR,
 	} sequence;
@@ -195,7 +223,7 @@ struct lzma_internal_s {
 	size_t avail_in;
 
 	/// Indicates which lzma_action values are allowed by next.code.
-	bool supported_actions[4];
+	bool supported_actions[LZMA_ACTION_MAX + 1];
 
 	/// If true, lzma_code will return LZMA_BUF_ERROR if no progress was
 	/// made (no input consumed and no output produced by next.code).
@@ -204,11 +232,17 @@ struct lzma_internal_s {
 
 
 /// Allocates memory
-extern void *lzma_alloc(size_t size, lzma_allocator *allocator)
+extern void *lzma_alloc(size_t size, const lzma_allocator *allocator)
 		lzma_attribute((__malloc__)) lzma_attr_alloc_size(1);
 
+/// Allocates memory and zeroes it (like calloc()). This can be faster
+/// than lzma_alloc() + memzero() while being backward compatible with
+/// custom allocators.
+extern void * lzma_attribute((__malloc__)) lzma_attr_alloc_size(1)
+		lzma_alloc_zero(size_t size, const lzma_allocator *allocator);
+
 /// Frees memory
-extern void lzma_free(void *ptr, lzma_allocator *allocator);
+extern void lzma_free(void *ptr, const lzma_allocator *allocator);
 
 
 /// Allocates strm->internal if it is NULL, and initializes *strm and
@@ -220,17 +254,19 @@ extern lzma_ret lzma_strm_init(lzma_stream *strm);
 /// than the filter being initialized now. This way the actual filter
 /// initialization functions don't need to use lzma_next_coder_init macro.
 extern lzma_ret lzma_next_filter_init(lzma_next_coder *next,
-		lzma_allocator *allocator, const lzma_filter_info *filters);
+		const lzma_allocator *allocator,
+		const lzma_filter_info *filters);
 
 /// Update the next filter in the chain, if any. This checks that
 /// the application is not trying to change the Filter IDs.
 extern lzma_ret lzma_next_filter_update(
-		lzma_next_coder *next, lzma_allocator *allocator,
+		lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter *reversed_filters);
 
 /// Frees the memory allocated for next->coder either using next->end or,
 /// if next->end is NULL, using lzma_free.
-extern void lzma_next_end(lzma_next_coder *next, lzma_allocator *allocator);
+extern void lzma_next_end(lzma_next_coder *next,
+		const lzma_allocator *allocator);
 
 
 /// Copy as much data as possible from in[] to out[] and update *in_pos

src/liblzma/common/easy_buffer_encoder.c

@@ -15,8 +15,8 @@
 
 extern LZMA_API(lzma_ret)
 lzma_easy_buffer_encode(uint32_t preset, lzma_check check,
-		lzma_allocator *allocator, const uint8_t *in, size_t in_size,
-		uint8_t *out, size_t *out_pos, size_t out_size)
+		const lzma_allocator *allocator, const uint8_t *in,
+		size_t in_size, uint8_t *out, size_t *out_pos, size_t out_size)
 {
 	lzma_options_easy opt_easy;
 	if (lzma_easy_preset(&opt_easy, preset))

src/liblzma/common/easy_encoder.c

@@ -11,7 +11,6 @@
 ///////////////////////////////////////////////////////////////////////////////
 
 #include "easy_preset.h"
-#include "stream_encoder.h"
 
 
 extern LZMA_API(lzma_ret)

src/liblzma/common/filter_buffer_decoder.c

@@ -14,7 +14,8 @@
 
 
 extern LZMA_API(lzma_ret)
-lzma_raw_buffer_decode(const lzma_filter *filters, lzma_allocator *allocator,
+lzma_raw_buffer_decode(
+		const lzma_filter *filters, const lzma_allocator *allocator,
 		const uint8_t *in, size_t *in_pos, size_t in_size,
 		uint8_t *out, size_t *out_pos, size_t out_size)
 {

src/liblzma/common/filter_buffer_encoder.c

@@ -14,9 +14,10 @@
 
 
 extern LZMA_API(lzma_ret)
-lzma_raw_buffer_encode(const lzma_filter *filters, lzma_allocator *allocator,
-		const uint8_t *in, size_t in_size, uint8_t *out,
-		size_t *out_pos, size_t out_size)
+lzma_raw_buffer_encode(
+		const lzma_filter *filters, const lzma_allocator *allocator,
+		const uint8_t *in, size_t in_size,
+		uint8_t *out, size_t *out_pos, size_t out_size)
 {
 	// Validate what isn't validated later in filter_common.c.
 	if ((in == NULL && in_size != 0) || out == NULL

src/liblzma/common/filter_common.c

@@ -123,7 +123,7 @@ static const struct {
 
 extern LZMA_API(lzma_ret)
 lzma_filters_copy(const lzma_filter *src, lzma_filter *dest,
-		lzma_allocator *allocator)
+		const lzma_allocator *allocator)
 {
 	if (src == NULL || dest == NULL)
 		return LZMA_PROG_ERROR;
@@ -239,7 +239,7 @@ validate_chain(const lzma_filter *filters, size_t *count)
 
 
 extern lzma_ret
-lzma_raw_coder_init(lzma_next_coder *next, lzma_allocator *allocator,
+lzma_raw_coder_init(lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter *options,
 		lzma_filter_find coder_find, bool is_encoder)
 {

src/liblzma/common/filter_common.h

@@ -36,7 +36,7 @@ typedef const lzma_filter_coder *(*lzma_filter_find)(lzma_vli id);
 
 
 extern lzma_ret lzma_raw_coder_init(
-		lzma_next_coder *next, lzma_allocator *allocator,
+		lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter *filters,
 		lzma_filter_find coder_find, bool is_encoder);
 

src/liblzma/common/filter_decoder.c

@@ -35,7 +35,8 @@ typedef struct {
 	/// \return     - LZMA_OK: Properties decoded successfully.
 	///             - LZMA_OPTIONS_ERROR: Unsupported properties
 	///             - LZMA_MEM_ERROR: Memory allocation failed.
-	lzma_ret (*props_decode)(void **options, lzma_allocator *allocator,
+	lzma_ret (*props_decode)(
+			void **options, const lzma_allocator *allocator,
 			const uint8_t *props, size_t props_size);
 
 } lzma_filter_decoder;
@@ -136,7 +137,7 @@ lzma_filter_decoder_is_supported(lzma_vli id)
 
 
 extern lzma_ret
-lzma_raw_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+lzma_raw_decoder_init(lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter *options)
 {
 	return lzma_raw_coder_init(next, allocator,
@@ -165,7 +166,7 @@ lzma_raw_decoder_memusage(const lzma_filter *filters)
 
 
 extern LZMA_API(lzma_ret)
-lzma_properties_decode(lzma_filter *filter, lzma_allocator *allocator,
+lzma_properties_decode(lzma_filter *filter, const lzma_allocator *allocator,
 		const uint8_t *props, size_t props_size)
 {
 	// Make it always NULL so that the caller can always safely free() it.

src/liblzma/common/filter_decoder.h

@@ -17,7 +17,7 @@
 
 
 extern lzma_ret lzma_raw_decoder_init(
-		lzma_next_coder *next, lzma_allocator *allocator,
+		lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter *options);
 
 #endif

src/liblzma/common/filter_encoder.c

@@ -30,11 +30,11 @@ typedef struct {
 	/// invalid, UINT64_MAX is returned.
 	uint64_t (*memusage)(const void *options);
 
-	/// Calculates the minimum sane size for Blocks (or other types of
-	/// chunks) to which the input data can be split to make
-	/// multithreaded encoding possible. If this is NULL, it is assumed
-	/// that the encoder is fast enough with single thread.
-	lzma_vli (*chunk_size)(const void *options);
+	/// Calculates the recommended Uncompressed Size for .xz Blocks to
+	/// which the input data can be split to make multithreaded
+	/// encoding possible. If this is NULL, it is assumed that
+	/// the encoder is fast enough with single thread.
+	uint64_t (*block_size)(const void *options);
 
 	/// Tells the size of the Filter Properties field. If options are
 	/// invalid, UINT32_MAX is returned. If this is NULL, props_size_fixed
@@ -59,7 +59,7 @@ static const lzma_filter_encoder encoders[] = {
 		.id = LZMA_FILTER_LZMA1,
 		.init = &lzma_lzma_encoder_init,
 		.memusage = &lzma_lzma_encoder_memusage,
-		.chunk_size = NULL, // FIXME
+		.block_size = NULL, // FIXME
 		.props_size_get = NULL,
 		.props_size_fixed = 5,
 		.props_encode = &lzma_lzma_props_encode,
@@ -70,7 +70,7 @@ static const lzma_filter_encoder encoders[] = {
 		.id = LZMA_FILTER_LZMA2,
 		.init = &lzma_lzma2_encoder_init,
 		.memusage = &lzma_lzma2_encoder_memusage,
-		.chunk_size = NULL, // FIXME
+		.block_size = &lzma_lzma2_block_size, // FIXME
 		.props_size_get = NULL,
 		.props_size_fixed = 1,
 		.props_encode = &lzma_lzma2_props_encode,
@@ -81,7 +81,7 @@ static const lzma_filter_encoder encoders[] = {
 		.id = LZMA_FILTER_X86,
 		.init = &lzma_simple_x86_encoder_init,
 		.memusage = NULL,
-		.chunk_size = NULL,
+		.block_size = NULL,
 		.props_size_get = &lzma_simple_props_size,
 		.props_encode = &lzma_simple_props_encode,
 	},
@@ -91,7 +91,7 @@ static const lzma_filter_encoder encoders[] = {
 		.id = LZMA_FILTER_POWERPC,
 		.init = &lzma_simple_powerpc_encoder_init,
 		.memusage = NULL,
-		.chunk_size = NULL,
+		.block_size = NULL,
 		.props_size_get = &lzma_simple_props_size,
 		.props_encode = &lzma_simple_props_encode,
 	},
@@ -101,7 +101,7 @@ static const lzma_filter_encoder encoders[] = {
 		.id = LZMA_FILTER_IA64,
 		.init = &lzma_simple_ia64_encoder_init,
 		.memusage = NULL,
-		.chunk_size = NULL,
+		.block_size = NULL,
 		.props_size_get = &lzma_simple_props_size,
 		.props_encode = &lzma_simple_props_encode,
 	},
@@ -111,7 +111,7 @@ static const lzma_filter_encoder encoders[] = {
 		.id = LZMA_FILTER_ARM,
 		.init = &lzma_simple_arm_encoder_init,
 		.memusage = NULL,
-		.chunk_size = NULL,
+		.block_size = NULL,
 		.props_size_get = &lzma_simple_props_size,
 		.props_encode = &lzma_simple_props_encode,
 	},
@@ -121,7 +121,7 @@ static const lzma_filter_encoder encoders[] = {
 		.id = LZMA_FILTER_ARMTHUMB,
 		.init = &lzma_simple_armthumb_encoder_init,
 		.memusage = NULL,
-		.chunk_size = NULL,
+		.block_size = NULL,
 		.props_size_get = &lzma_simple_props_size,
 		.props_encode = &lzma_simple_props_encode,
 	},
@@ -131,7 +131,7 @@ static const lzma_filter_encoder encoders[] = {
 		.id = LZMA_FILTER_SPARC,
 		.init = &lzma_simple_sparc_encoder_init,
 		.memusage = NULL,
-		.chunk_size = NULL,
+		.block_size = NULL,
 		.props_size_get = &lzma_simple_props_size,
 		.props_encode = &lzma_simple_props_encode,
 	},
@@ -141,7 +141,7 @@ static const lzma_filter_encoder encoders[] = {
 		.id = LZMA_FILTER_DELTA,
 		.init = &lzma_delta_encoder_init,
 		.memusage = &lzma_delta_coder_memusage,
-		.chunk_size = NULL,
+		.block_size = NULL,
 		.props_size_get = NULL,
 		.props_size_fixed = 1,
 		.props_encode = &lzma_delta_props_encode,
@@ -196,7 +196,7 @@ lzma_filters_update(lzma_stream *strm, const lzma_filter *filters)
 
 
 extern lzma_ret
-lzma_raw_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+lzma_raw_encoder_init(lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter *options)
 {
 	return lzma_raw_coder_init(next, allocator,
@@ -226,20 +226,19 @@ lzma_raw_encoder_memusage(const lzma_filter *filters)
 }
 
 
-/*
-extern LZMA_API(lzma_vli)
-lzma_chunk_size(const lzma_filter *filters)
+extern uint64_t
+lzma_mt_block_size(const lzma_filter *filters)
 {
-	lzma_vli max = 0;
+	uint64_t max = 0;
 
 	for (size_t i = 0; filters[i].id != LZMA_VLI_UNKNOWN; ++i) {
 		const lzma_filter_encoder *const fe
 				= encoder_find(filters[i].id);
-		if (fe->chunk_size != NULL) {
-			const lzma_vli size
-					= fe->chunk_size(filters[i].options);
-			if (size == LZMA_VLI_UNKNOWN)
-				return LZMA_VLI_UNKNOWN;
+		if (fe->block_size != NULL) {
+			const uint64_t size
+					= fe->block_size(filters[i].options);
+			if (size == 0)
+				return 0;
 
 			if (size > max)
 				max = size;
@@ -248,7 +247,6 @@ lzma_chunk_size(const lzma_filter *filters)
 
 	return max;
 }
-*/
 
 
 extern LZMA_API(lzma_ret)

src/liblzma/common/filter_encoder.h

@@ -16,12 +16,12 @@
 #include "common.h"
 
 
-// FIXME: Might become a part of the public API once finished.
-// extern lzma_vli lzma_chunk_size(const lzma_filter *filters);
+// FIXME: Might become a part of the public API.
+extern uint64_t lzma_mt_block_size(const lzma_filter *filters);
 
 
 extern lzma_ret lzma_raw_encoder_init(
-		lzma_next_coder *next, lzma_allocator *allocator,
+		lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter *filters);
 
 #endif

src/liblzma/common/filter_flags_decoder.c

@@ -15,7 +15,7 @@
 
 extern LZMA_API(lzma_ret)
 lzma_filter_flags_decode(
-		lzma_filter *filter, lzma_allocator *allocator,
+		lzma_filter *filter, const lzma_allocator *allocator,
 		const uint8_t *in, size_t *in_pos, size_t in_size)
 {
 	// Set the pointer to NULL so the caller can always safely free it.

src/liblzma/common/hardware_cputhreads.c

@@ -1,7 +1,7 @@
 ///////////////////////////////////////////////////////////////////////////////
 //
-/// \file       stream_encoder.h
-/// \brief      Encodes .xz Streams
+/// \file       hardware_cputhreads.c
+/// \brief      Get the number of CPU threads or cores
 //
 //  Author:     Lasse Collin
 //
@@ -10,14 +10,13 @@
 //
 ///////////////////////////////////////////////////////////////////////////////
 
-#ifndef LZMA_STREAM_ENCODER_H
-#define LZMA_STREAM_ENCODER_H
-
 #include "common.h"
 
+#include "tuklib_cpucores.h"
 
-extern lzma_ret lzma_stream_encoder_init(
-		lzma_next_coder *next, lzma_allocator *allocator,
-		const lzma_filter *filters, lzma_check check);
 
-#endif
+extern LZMA_API(uint32_t)
+lzma_cputhreads(void)
+{
+	return tuklib_cpucores();
+}

src/liblzma/common/index.c

@@ -191,8 +191,8 @@ index_tree_init(index_tree *tree)
 
 /// Helper for index_tree_end()
 static void
-index_tree_node_end(index_tree_node *node, lzma_allocator *allocator,
-		void (*free_func)(void *node, lzma_allocator *allocator))
+index_tree_node_end(index_tree_node *node, const lzma_allocator *allocator,
+		void (*free_func)(void *node, const lzma_allocator *allocator))
 {
 	// The tree won't ever be very huge, so recursion should be fine.
 	// 20 levels in the tree is likely quite a lot already in practice.
@@ -215,8 +215,8 @@ index_tree_node_end(index_tree_node *node, lzma_allocator *allocator,
 /// to free the Record groups from each index_stream before freeing
 /// the index_stream itself.
 static void
-index_tree_end(index_tree *tree, lzma_allocator *allocator,
-		void (*free_func)(void *node, lzma_allocator *allocator))
+index_tree_end(index_tree *tree, const lzma_allocator *allocator,
+		void (*free_func)(void *node, const lzma_allocator *allocator))
 {
 	if (tree->root != NULL)
 		index_tree_node_end(tree->root, allocator, free_func);
@@ -340,7 +340,7 @@ index_tree_locate(const index_tree *tree, lzma_vli target)
 static index_stream *
 index_stream_init(lzma_vli compressed_base, lzma_vli uncompressed_base,
 		lzma_vli stream_number, lzma_vli block_number_base,
-		lzma_allocator *allocator)
+		const lzma_allocator *allocator)
 {
 	index_stream *s = lzma_alloc(sizeof(index_stream), allocator);
 	if (s == NULL)
@@ -368,7 +368,7 @@ index_stream_init(lzma_vli compressed_base, lzma_vli uncompressed_base,
 
 /// Free the memory allocated for a Stream and its Record groups.
 static void
-index_stream_end(void *node, lzma_allocator *allocator)
+index_stream_end(void *node, const lzma_allocator *allocator)
 {
 	index_stream *s = node;
 	index_tree_end(&s->groups, allocator, NULL);
@@ -377,7 +377,7 @@ index_stream_end(void *node, lzma_allocator *allocator)
 
 
 static lzma_index *
-index_init_plain(lzma_allocator *allocator)
+index_init_plain(const lzma_allocator *allocator)
 {
 	lzma_index *i = lzma_alloc(sizeof(lzma_index), allocator);
 	if (i != NULL) {
@@ -395,7 +395,7 @@ index_init_plain(lzma_allocator *allocator)
 
 
 extern LZMA_API(lzma_index *)
-lzma_index_init(lzma_allocator *allocator)
+lzma_index_init(const lzma_allocator *allocator)
 {
 	lzma_index *i = index_init_plain(allocator);
 	if (i == NULL)
@@ -414,7 +414,7 @@ lzma_index_init(lzma_allocator *allocator)
 
 
 extern LZMA_API(void)
-lzma_index_end(lzma_index *i, lzma_allocator *allocator)
+lzma_index_end(lzma_index *i, const lzma_allocator *allocator)
 {
 	// NOTE: If you modify this function, check also the bottom
 	// of lzma_index_cat().
@@ -637,7 +637,7 @@ lzma_index_stream_padding(lzma_index *i, lzma_vli stream_padding)
 
 
 extern LZMA_API(lzma_ret)
-lzma_index_append(lzma_index *i, lzma_allocator *allocator,
+lzma_index_append(lzma_index *i, const lzma_allocator *allocator,
 		lzma_vli unpadded_size, lzma_vli uncompressed_size)
 {
 	// Validate.
@@ -765,7 +765,7 @@ index_cat_helper(const index_cat_info *info, index_stream *this)
 
 extern LZMA_API(lzma_ret)
 lzma_index_cat(lzma_index *restrict dest, lzma_index *restrict src,
-		lzma_allocator *allocator)
+		const lzma_allocator *allocator)
 {
 	const lzma_vli dest_file_size = lzma_index_file_size(dest);
 
@@ -859,7 +859,7 @@ lzma_index_cat(lzma_index *restrict dest, lzma_index *restrict src,
 
 /// Duplicate an index_stream.
 static index_stream *
-index_dup_stream(const index_stream *src, lzma_allocator *allocator)
+index_dup_stream(const index_stream *src, const lzma_allocator *allocator)
 {
 	// Catch a somewhat theoretical integer overflow.
 	if (src->record_count > PREALLOC_MAX)
@@ -919,7 +919,7 @@ index_dup_stream(const index_stream *src, lzma_allocator *allocator)
 
 
 extern LZMA_API(lzma_index *)
-lzma_index_dup(const lzma_index *src, lzma_allocator *allocator)
+lzma_index_dup(const lzma_index *src, const lzma_allocator *allocator)
 {
 	// Allocate the base structure (no initial Stream).
 	lzma_index *dest = index_init_plain(allocator);

src/liblzma/common/index_decoder.c

@@ -54,7 +54,7 @@ struct lzma_coder_s {
 
 
 static lzma_ret
-index_decode(lzma_coder *coder, lzma_allocator *allocator,
+index_decode(lzma_coder *coder, const lzma_allocator *allocator,
 		const uint8_t *restrict in, size_t *restrict in_pos,
 		size_t in_size,
 		uint8_t *restrict out lzma_attribute((__unused__)),
@@ -207,7 +207,7 @@ out:
 
 
 static void
-index_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
+index_decoder_end(lzma_coder *coder, const lzma_allocator *allocator)
 {
 	lzma_index_end(coder->index, allocator);
 	lzma_free(coder, allocator);
@@ -234,7 +234,7 @@ index_decoder_memconfig(lzma_coder *coder, uint64_t *memusage,
 
 
 static lzma_ret
-index_decoder_reset(lzma_coder *coder, lzma_allocator *allocator,
+index_decoder_reset(lzma_coder *coder, const lzma_allocator *allocator,
 		lzma_index **i, uint64_t memlimit)
 {
 	// Remember the pointer given by the application. We will set it
@@ -261,7 +261,7 @@ index_decoder_reset(lzma_coder *coder, lzma_allocator *allocator,
 
 
 static lzma_ret
-index_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+index_decoder_init(lzma_next_coder *next, const lzma_allocator *allocator,
 		lzma_index **i, uint64_t memlimit)
 {
 	lzma_next_coder_init(&index_decoder_init, next, allocator);
@@ -299,8 +299,8 @@ lzma_index_decoder(lzma_stream *strm, lzma_index **i, uint64_t memlimit)
 
 
 extern LZMA_API(lzma_ret)
-lzma_index_buffer_decode(
-		lzma_index **i, uint64_t *memlimit, lzma_allocator *allocator,
+lzma_index_buffer_decode(lzma_index **i, uint64_t *memlimit,
+		const lzma_allocator *allocator,
 		const uint8_t *in, size_t *in_pos, size_t in_size)
 {
 	// Sanity checks

src/liblzma/common/index_encoder.c

@@ -42,7 +42,7 @@ struct lzma_coder_s {
 
 static lzma_ret
 index_encode(lzma_coder *coder,
-		lzma_allocator *allocator lzma_attribute((__unused__)),
+		const lzma_allocator *allocator lzma_attribute((__unused__)),
 		const uint8_t *restrict in lzma_attribute((__unused__)),
 		size_t *restrict in_pos lzma_attribute((__unused__)),
 		size_t in_size lzma_attribute((__unused__)),
@@ -159,7 +159,7 @@ out:
 
 
 static void
-index_encoder_end(lzma_coder *coder, lzma_allocator *allocator)
+index_encoder_end(lzma_coder *coder, const lzma_allocator *allocator)
 {
 	lzma_free(coder, allocator);
 	return;
@@ -181,7 +181,7 @@ index_encoder_reset(lzma_coder *coder, const lzma_index *i)
 
 
 extern lzma_ret
-lzma_index_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+lzma_index_encoder_init(lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_index *i)
 {
 	lzma_next_coder_init(&lzma_index_encoder_init, next, allocator);

src/liblzma/common/index_encoder.h

@@ -17,7 +17,7 @@
 
 
 extern lzma_ret lzma_index_encoder_init(lzma_next_coder *next,
-		lzma_allocator *allocator, const lzma_index *i);
+		const lzma_allocator *allocator, const lzma_index *i);
 
 
 #endif

src/liblzma/common/index_hash.c

@@ -70,7 +70,8 @@ struct lzma_index_hash_s {
 
 
 extern LZMA_API(lzma_index_hash *)
-lzma_index_hash_init(lzma_index_hash *index_hash, lzma_allocator *allocator)
+lzma_index_hash_init(lzma_index_hash *index_hash,
+		const lzma_allocator *allocator)
 {
 	if (index_hash == NULL) {
 		index_hash = lzma_alloc(sizeof(lzma_index_hash), allocator);
@@ -101,7 +102,8 @@ lzma_index_hash_init(lzma_index_hash *index_hash, lzma_allocator *allocator)
 
 
 extern LZMA_API(void)
-lzma_index_hash_end(lzma_index_hash *index_hash, lzma_allocator *allocator)
+lzma_index_hash_end(lzma_index_hash *index_hash,
+		const lzma_allocator *allocator)
 {
 	lzma_free(index_hash, allocator);
 	return;

src/liblzma/common/memcmplen.h

@@ -0,0 +1,170 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       memcmplen.h
+/// \brief      Optimized comparison of two buffers
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_MEMCMPLEN_H
+#define LZMA_MEMCMPLEN_H
+
+#include "common.h"
+
+#ifdef HAVE_IMMINTRIN_H
+#	include <immintrin.h>
+#endif
+
+/// How many extra bytes lzma_memcmplen() may read. This depends on
+/// the method but since it is just a few bytes the biggest possible
+/// value is used here.
+#define LZMA_MEMCMPLEN_EXTRA 16
+
+
+/// Find out how many equal bytes the two buffers have.
+///
+/// \param      buf1    First buffer
+/// \param      buf2    Second buffer
+/// \param      len     How many bytes have already been compared and will
+///                     be assumed to match
+/// \param      limit   How many bytes to compare at most, including the
+///                     already-compared bytes. This must be significantly
+///                     smaller than UINT32_MAX to avoid integer overflows.
+///                     Up to LZMA_MEMCMPLEN_EXTRA bytes may be read past
+///                     the specified limit from both buf1 and buf2.
+///
+/// \return     Number of equal bytes in the buffers is returned.
+///             This is always at least len and at most limit.
+static inline uint32_t lzma_attribute((__always_inline__))
+lzma_memcmplen(const uint8_t *buf1, const uint8_t *buf2,
+		uint32_t len, uint32_t limit)
+{
+	assert(len <= limit);
+	assert(limit <= UINT32_MAX / 2);
+
+#if defined(TUKLIB_FAST_UNALIGNED_ACCESS) \
+		&& ((TUKLIB_GNUC_REQ(3, 4) && defined(__x86_64__)) \
+			|| (defined(__INTEL_COMPILER) && defined(__x86_64__)) \
+			|| (defined(__INTEL_COMPILER) && defined(_M_X64)) \
+			|| (defined(_MSC_VER) && defined(_M_X64)))
+	// NOTE: This will use 64-bit unaligned access which
+	// TUKLIB_FAST_UNALIGNED_ACCESS wasn't meant to permit, but
+	// it's convenient here at least as long as it's x86-64 only.
+	//
+	// I keep this x86-64 only for now since that's where I know this
+	// to be a good method. This may be fine on other 64-bit CPUs too.
+	// On big endian one should use xor instead of subtraction and switch
+	// to __builtin_clzll().
+	while (len < limit) {
+		const uint64_t x = *(const uint64_t *)(buf1 + len)
+				- *(const uint64_t *)(buf2 + len);
+		if (x != 0) {
+#	if defined(_M_X64) // MSVC or Intel C compiler on Windows
+			unsigned long tmp;
+			_BitScanForward64(&tmp, x);
+			len += (uint32_t)tmp >> 3;
+#	else // GCC, clang, or Intel C compiler
+			len += (uint32_t)__builtin_ctzll(x) >> 3;
+#	endif
+			return my_min(len, limit);
+		}
+
+		len += 8;
+	}
+
+	return limit;
+
+#elif defined(TUKLIB_FAST_UNALIGNED_ACCESS) \
+		&& defined(HAVE__MM_MOVEMASK_EPI8) \
+		&& ((defined(__GNUC__) && defined(__SSE2_MATH__)) \
+			|| (defined(__INTEL_COMPILER) && defined(__SSE2__)) \
+			|| (defined(_MSC_VER) && defined(_M_IX86_FP) \
+				&& _M_IX86_FP >= 2))
+	// NOTE: Like above, this will use 128-bit unaligned access which
+	// TUKLIB_FAST_UNALIGNED_ACCESS wasn't meant to permit.
+	//
+	// SSE2 version for 32-bit and 64-bit x86. On x86-64 the above
+	// version is sometimes significantly faster and sometimes
+	// slightly slower than this SSE2 version, so this SSE2
+	// version isn't used on x86-64.
+	while (len < limit) {
+		const uint32_t x = 0xFFFF ^ _mm_movemask_epi8(_mm_cmpeq_epi8(
+			_mm_loadu_si128((const __m128i *)(buf1 + len)),
+			_mm_loadu_si128((const __m128i *)(buf2 + len))));
+
+		if (x != 0) {
+#	if defined(__INTEL_COMPILER)
+			len += _bit_scan_forward(x);
+#	elif defined(_MSC_VER)
+			unsigned long tmp;
+			_BitScanForward(&tmp, x);
+			len += tmp;
+#	else
+			len += __builtin_ctz(x);
+#	endif
+			return my_min(len, limit);
+		}
+
+		len += 16;
+	}
+
+	return limit;
+
+#elif defined(TUKLIB_FAST_UNALIGNED_ACCESS) && !defined(WORDS_BIGENDIAN)
+	// Generic 32-bit little endian method
+	while (len < limit) {
+		uint32_t x = *(const uint32_t *)(buf1 + len)
+				- *(const uint32_t *)(buf2 + len);
+		if (x != 0) {
+			if ((x & 0xFFFF) == 0) {
+				len += 2;
+				x >>= 16;
+			}
+
+			if ((x & 0xFF) == 0)
+				++len;
+
+			return my_min(len, limit);
+		}
+
+		len += 4;
+	}
+
+	return limit;
+
+#elif defined(TUKLIB_FAST_UNALIGNED_ACCESS) && defined(WORDS_BIGENDIAN)
+	// Generic 32-bit big endian method
+	while (len < limit) {
+		uint32_t x = *(const uint32_t *)(buf1 + len)
+				^ *(const uint32_t *)(buf2 + len);
+		if (x != 0) {
+			if ((x & 0xFFFF0000) == 0) {
+				len += 2;
+				x <<= 16;
+			}
+
+			if ((x & 0xFF000000) == 0)
+				++len;
+
+			return my_min(len, limit);
+		}
+
+		len += 4;
+	}
+
+	return limit;
+
+#else
+	// Simple portable version that doesn't use unaligned access.
+	while (len < limit && buf1[len] == buf2[len])
+		++len;
+
+	return len;
+#endif
+}
+
+#endif

src/liblzma/common/outqueue.c

@@ -0,0 +1,184 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       outqueue.c
+/// \brief      Output queue handling in multithreaded coding
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "outqueue.h"
+
+
+/// This is to ease integer overflow checking: We may allocate up to
+/// 2 * LZMA_THREADS_MAX buffers and we need some extra memory for other
+/// data structures (that's the second /2).
+#define BUF_SIZE_MAX (UINT64_MAX / LZMA_THREADS_MAX / 2 / 2)
+
+
+static lzma_ret
+get_options(uint64_t *bufs_alloc_size, uint32_t *bufs_count,
+		uint64_t buf_size_max, uint32_t threads)
+{
+	if (threads > LZMA_THREADS_MAX || buf_size_max > BUF_SIZE_MAX)
+		return LZMA_OPTIONS_ERROR;
+
+	// The number of buffers is twice the number of threads.
+	// This wastes RAM but keeps the threads busy when buffers
+	// finish out of order.
+	//
+	// NOTE: If this is changed, update BUF_SIZE_MAX too.
+	*bufs_count = threads * 2;
+	*bufs_alloc_size = *bufs_count * buf_size_max;
+
+	return LZMA_OK;
+}
+
+
+extern uint64_t
+lzma_outq_memusage(uint64_t buf_size_max, uint32_t threads)
+{
+	uint64_t bufs_alloc_size;
+	uint32_t bufs_count;
+
+	if (get_options(&bufs_alloc_size, &bufs_count, buf_size_max, threads)
+			!= LZMA_OK)
+		return UINT64_MAX;
+
+	return sizeof(lzma_outq) + bufs_count * sizeof(lzma_outbuf)
+			+ bufs_alloc_size;
+}
+
+
+extern lzma_ret
+lzma_outq_init(lzma_outq *outq, const lzma_allocator *allocator,
+		uint64_t buf_size_max, uint32_t threads)
+{
+	uint64_t bufs_alloc_size;
+	uint32_t bufs_count;
+
+	// Set bufs_count and bufs_alloc_size.
+	return_if_error(get_options(&bufs_alloc_size, &bufs_count,
+			buf_size_max, threads));
+
+	// Allocate memory if needed.
+	if (outq->buf_size_max != buf_size_max
+			|| outq->bufs_allocated != bufs_count) {
+		lzma_outq_end(outq, allocator);
+
+#if SIZE_MAX < UINT64_MAX
+		if (bufs_alloc_size > SIZE_MAX)
+			return LZMA_MEM_ERROR;
+#endif
+
+		outq->bufs = lzma_alloc(bufs_count * sizeof(lzma_outbuf),
+				allocator);
+		outq->bufs_mem = lzma_alloc((size_t)(bufs_alloc_size),
+				allocator);
+
+		if (outq->bufs == NULL || outq->bufs_mem == NULL) {
+			lzma_outq_end(outq, allocator);
+			return LZMA_MEM_ERROR;
+		}
+	}
+
+	// Initialize the rest of the main structure. Initialization of
+	// outq->bufs[] is done when they are actually needed.
+	outq->buf_size_max = (size_t)(buf_size_max);
+	outq->bufs_allocated = bufs_count;
+	outq->bufs_pos = 0;
+	outq->bufs_used = 0;
+	outq->read_pos = 0;
+
+	return LZMA_OK;
+}
+
+
+extern void
+lzma_outq_end(lzma_outq *outq, const lzma_allocator *allocator)
+{
+	lzma_free(outq->bufs, allocator);
+	outq->bufs = NULL;
+
+	lzma_free(outq->bufs_mem, allocator);
+	outq->bufs_mem = NULL;
+
+	return;
+}
+
+
+extern lzma_outbuf *
+lzma_outq_get_buf(lzma_outq *outq)
+{
+	// Caller must have checked it with lzma_outq_has_buf().
+	assert(outq->bufs_used < outq->bufs_allocated);
+
+	// Initialize the new buffer.
+	lzma_outbuf *buf = &outq->bufs[outq->bufs_pos];
+	buf->buf = outq->bufs_mem + outq->bufs_pos * outq->buf_size_max;
+	buf->size = 0;
+	buf->finished = false;
+
+	// Update the queue state.
+	if (++outq->bufs_pos == outq->bufs_allocated)
+		outq->bufs_pos = 0;
+
+	++outq->bufs_used;
+
+	return buf;
+}
+
+
+extern bool
+lzma_outq_is_readable(const lzma_outq *outq)
+{
+	uint32_t i = outq->bufs_pos - outq->bufs_used;
+	if (outq->bufs_pos < outq->bufs_used)
+		i += outq->bufs_allocated;
+
+	return outq->bufs[i].finished;
+}
+
+
+extern lzma_ret
+lzma_outq_read(lzma_outq *restrict outq, uint8_t *restrict out,
+		size_t *restrict out_pos, size_t out_size,
+		lzma_vli *restrict unpadded_size,
+		lzma_vli *restrict uncompressed_size)
+{
+	// There must be at least one buffer from which to read.
+	if (outq->bufs_used == 0)
+		return LZMA_OK;
+
+	// Get the buffer.
+	uint32_t i = outq->bufs_pos - outq->bufs_used;
+	if (outq->bufs_pos < outq->bufs_used)
+		i += outq->bufs_allocated;
+
+	lzma_outbuf *buf = &outq->bufs[i];
+
+	// If it isn't finished yet, we cannot read from it.
+	if (!buf->finished)
+		return LZMA_OK;
+
+	// Copy from the buffer to output.
+	lzma_bufcpy(buf->buf, &outq->read_pos, buf->size,
+			out, out_pos, out_size);
+
+	// Return if we didn't get all the data from the buffer.
+	if (outq->read_pos < buf->size)
+		return LZMA_OK;
+
+	// The buffer was finished. Tell the caller its size information.
+	*unpadded_size = buf->unpadded_size;
+	*uncompressed_size = buf->uncompressed_size;
+
+	// Free this buffer for further use.
+	--outq->bufs_used;
+	outq->read_pos = 0;
+
+	return LZMA_STREAM_END;
+}

src/liblzma/common/outqueue.h

@@ -0,0 +1,156 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       outqueue.h
+/// \brief      Output queue handling in multithreaded coding
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+
+/// Output buffer for a single thread
+typedef struct {
+	/// Pointer to the output buffer of lzma_outq.buf_size_max bytes
+	uint8_t *buf;
+
+	/// Amount of data written to buf
+	size_t size;
+
+	/// Additional size information
+	lzma_vli unpadded_size;
+	lzma_vli uncompressed_size;
+
+	/// True when no more data will be written into this buffer.
+	///
+	/// \note       This is read by another thread and thus access
+	///             to this variable needs a mutex.
+	bool finished;
+
+} lzma_outbuf;
+
+
+typedef struct {
+	/// Array of buffers that are used cyclically.
+	lzma_outbuf *bufs;
+
+	/// Memory allocated for all the buffers
+	uint8_t *bufs_mem;
+
+	/// Amount of buffer space available in each buffer
+	size_t buf_size_max;
+
+	/// Number of buffers allocated
+	uint32_t bufs_allocated;
+
+	/// Position in the bufs array. The next buffer to be taken
+	/// into use is bufs[bufs_pos].
+	uint32_t bufs_pos;
+
+	/// Number of buffers in use
+	uint32_t bufs_used;
+
+	/// Position in the buffer in lzma_outq_read()
+	size_t read_pos;
+
+} lzma_outq;
+
+
+/**
+ * \brief       Calculate the memory usage of an output queue
+ *
+ * \return      Approximate memory usage in bytes or UINT64_MAX on error.
+ */
+extern uint64_t lzma_outq_memusage(uint64_t buf_size_max, uint32_t threads);
+
+
+/// \brief      Initialize an output queue
+///
+/// \param      outq            Pointer to an output queue. Before calling
+///                             this function the first time, *outq should
+///                             have been zeroed with memzero() so that this
+///                             function knows that there are no previous
+///                             allocations to free.
+/// \param      allocator       Pointer to allocator or NULL
+/// \param      buf_size_max    Maximum amount of data that a single buffer
+///                             in the queue may need to store.
+/// \param      threads         Number of buffers that may be in use
+///                             concurrently. Note that more than this number
+///                             of buffers will actually get allocated to
+///                             improve performance when buffers finish
+///                             out of order.
+///
+/// \return     - LZMA_OK
+///             - LZMA_MEM_ERROR
+///
+extern lzma_ret lzma_outq_init(
+		lzma_outq *outq, const lzma_allocator *allocator,
+		uint64_t buf_size_max, uint32_t threads);
+
+
+/// \brief      Free the memory associated with the output queue
+extern void lzma_outq_end(lzma_outq *outq, const lzma_allocator *allocator);
+
+
+/// \brief      Get a new buffer
+///
+/// lzma_outq_has_buf() must be used to check that there is a buffer
+/// available before calling lzma_outq_get_buf().
+///
+extern lzma_outbuf *lzma_outq_get_buf(lzma_outq *outq);
+
+
+/// \brief      Test if there is data ready to be read
+///
+/// Call to this function must be protected with the same mutex that
+/// is used to protect lzma_outbuf.finished.
+///
+extern bool lzma_outq_is_readable(const lzma_outq *outq);
+
+
+/// \brief      Read finished data
+///
+/// \param      outq            Pointer to an output queue
+/// \param      out             Beginning of the output buffer
+/// \param      out_pos         The next byte will be written to
+///                             out[*out_pos].
+/// \param      out_size        Size of the out buffer; the first byte into
+///                             which no data is written to is out[out_size].
+/// \param      unpadded_size   Unpadded Size from the Block encoder
+/// \param      uncompressed_size Uncompressed Size from the Block encoder
+///
+/// \return     - LZMA: All OK. Either no data was available or the buffer
+///               being read didn't become empty yet.
+///             - LZMA_STREAM_END: The buffer being read was finished.
+///               *unpadded_size and *uncompressed_size were set.
+///
+/// \note       This reads lzma_outbuf.finished variables and thus call
+///             to this function needs to be protected with a mutex.
+///
+extern lzma_ret lzma_outq_read(lzma_outq *restrict outq,
+		uint8_t *restrict out, size_t *restrict out_pos,
+		size_t out_size, lzma_vli *restrict unpadded_size,
+		lzma_vli *restrict uncompressed_size);
+
+
+/// \brief      Test if there is at least one buffer free
+///
+/// This must be used before getting a new buffer with lzma_outq_get_buf().
+///
+static inline bool
+lzma_outq_has_buf(const lzma_outq *outq)
+{
+	return outq->bufs_used < outq->bufs_allocated;
+}
+
+
+/// \brief      Test if the queue is completely empty
+static inline bool
+lzma_outq_is_empty(const lzma_outq *outq)
+{
+	return outq->bufs_used == 0;
+}

src/liblzma/common/stream_buffer_decoder.c

@@ -15,7 +15,7 @@
 
 extern LZMA_API(lzma_ret)
 lzma_stream_buffer_decode(uint64_t *memlimit, uint32_t flags,
-		lzma_allocator *allocator,
+		const lzma_allocator *allocator,
 		const uint8_t *in, size_t *in_pos, size_t in_size,
 		uint8_t *out, size_t *out_pos, size_t out_size)
 {

src/liblzma/common/stream_buffer_encoder.c

@@ -42,7 +42,8 @@ lzma_stream_buffer_bound(size_t uncompressed_size)
 
 extern LZMA_API(lzma_ret)
 lzma_stream_buffer_encode(lzma_filter *filters, lzma_check check,
-		lzma_allocator *allocator, const uint8_t *in, size_t in_size,
+		const lzma_allocator *allocator,
+		const uint8_t *in, size_t in_size,
 		uint8_t *out, size_t *out_pos_ptr, size_t out_size)
 {
 	// Sanity checks

src/liblzma/common/stream_decoder.c

@@ -57,6 +57,10 @@ struct lzma_coder_s {
 	/// If true, LZMA_GET_CHECK is returned after decoding Stream Header.
 	bool tell_any_check;
 
+	/// If true, we will tell the Block decoder to skip calculating
+	/// and verifying the integrity check.
+	bool ignore_check;
+
 	/// If true, we will decode concatenated Streams that possibly have
 	/// Stream Padding between or after them. LZMA_STREAM_END is returned
 	/// once the application isn't giving us any new input, and we aren't
@@ -80,7 +84,7 @@ struct lzma_coder_s {
 
 
 static lzma_ret
-stream_decoder_reset(lzma_coder *coder, lzma_allocator *allocator)
+stream_decoder_reset(lzma_coder *coder, const lzma_allocator *allocator)
 {
 	// Initialize the Index hash used to verify the Index.
 	coder->index_hash = lzma_index_hash_init(coder->index_hash, allocator);
@@ -96,7 +100,7 @@ stream_decoder_reset(lzma_coder *coder, lzma_allocator *allocator)
 
 
 static lzma_ret
-stream_decode(lzma_coder *coder, lzma_allocator *allocator,
+stream_decode(lzma_coder *coder, const lzma_allocator *allocator,
 		const uint8_t *restrict in, size_t *restrict in_pos,
 		size_t in_size, uint8_t *restrict out,
 		size_t *restrict out_pos, size_t out_size, lzma_action action)
@@ -182,8 +186,8 @@ stream_decode(lzma_coder *coder, lzma_allocator *allocator,
 
 		coder->pos = 0;
 
-		// Version 0 is currently the only possible version.
-		coder->block_options.version = 0;
+		// Version 1 is needed to support the .ignore_check option.
+		coder->block_options.version = 1;
 
 		// Set up a buffer to hold the filter chain. Block Header
 		// decoder will initialize all members of this array so
@@ -195,6 +199,11 @@ stream_decode(lzma_coder *coder, lzma_allocator *allocator,
 		return_if_error(lzma_block_header_decode(&coder->block_options,
 				allocator, coder->buffer));
 
+		// If LZMA_IGNORE_CHECK was used, this flag needs to be set.
+		// It has to be set after lzma_block_header_decode() because
+		// it always resets this to false.
+		coder->block_options.ignore_check = coder->ignore_check;
+
 		// Check the memory usage limit.
 		const uint64_t memusage = lzma_raw_decoder_memusage(filters);
 		lzma_ret ret;
@@ -366,7 +375,7 @@ stream_decode(lzma_coder *coder, lzma_allocator *allocator,
 
 
 static void
-stream_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
+stream_decoder_end(lzma_coder *coder, const lzma_allocator *allocator)
 {
 	lzma_next_end(&coder->block_decoder, allocator);
 	lzma_index_hash_end(coder->index_hash, allocator);
@@ -401,7 +410,8 @@ stream_decoder_memconfig(lzma_coder *coder, uint64_t *memusage,
 
 
 extern lzma_ret
-lzma_stream_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+lzma_stream_decoder_init(
+		lzma_next_coder *next, const lzma_allocator *allocator,
 		uint64_t memlimit, uint32_t flags)
 {
 	lzma_next_coder_init(&lzma_stream_decoder_init, next, allocator);
@@ -432,6 +442,7 @@ lzma_stream_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
 	next->coder->tell_unsupported_check
 			= (flags & LZMA_TELL_UNSUPPORTED_CHECK) != 0;
 	next->coder->tell_any_check = (flags & LZMA_TELL_ANY_CHECK) != 0;
+	next->coder->ignore_check = (flags & LZMA_IGNORE_CHECK) != 0;
 	next->coder->concatenated = (flags & LZMA_CONCATENATED) != 0;
 	next->coder->first_stream = true;
 

src/liblzma/common/stream_decoder.h

@@ -15,7 +15,8 @@
 
 #include "common.h"
 
-extern lzma_ret lzma_stream_decoder_init(lzma_next_coder *next,
-		lzma_allocator *allocator, uint64_t memlimit, uint32_t flags);
+extern lzma_ret lzma_stream_decoder_init(
+		lzma_next_coder *next, const lzma_allocator *allocator,
+		uint64_t memlimit, uint32_t flags);
 
 #endif

src/liblzma/common/stream_encoder.c

@@ -10,7 +10,6 @@
 //
 ///////////////////////////////////////////////////////////////////////////////
 
-#include "stream_encoder.h"
 #include "block_encoder.h"
 #include "index_encoder.h"
 
@@ -26,7 +25,7 @@ struct lzma_coder_s {
 	} sequence;
 
 	/// True if Block encoder has been initialized by
-	/// lzma_stream_encoder_init() or stream_encoder_update()
+	/// stream_encoder_init() or stream_encoder_update()
 	/// and thus doesn't need to be initialized in stream_encode().
 	bool block_encoder_is_initialized;
 
@@ -60,7 +59,7 @@ struct lzma_coder_s {
 
 
 static lzma_ret
-block_encoder_init(lzma_coder *coder, lzma_allocator *allocator)
+block_encoder_init(lzma_coder *coder, const lzma_allocator *allocator)
 {
 	// Prepare the Block options. Even though Block encoder doesn't need
 	// compressed_size, uncompressed_size, and header_size to be
@@ -79,7 +78,7 @@ block_encoder_init(lzma_coder *coder, lzma_allocator *allocator)
 
 
 static lzma_ret
-stream_encode(lzma_coder *coder, lzma_allocator *allocator,
+stream_encode(lzma_coder *coder, const lzma_allocator *allocator,
 		const uint8_t *restrict in, size_t *restrict in_pos,
 		size_t in_size, uint8_t *restrict out,
 		size_t *restrict out_pos, size_t out_size, lzma_action action)
@@ -126,7 +125,7 @@ stream_encode(lzma_coder *coder, lzma_allocator *allocator,
 		}
 
 		// Initialize the Block encoder unless it was already
-		// initialized by lzma_stream_encoder_init() or
+		// initialized by stream_encoder_init() or
 		// stream_encoder_update().
 		if (!coder->block_encoder_is_initialized)
 			return_if_error(block_encoder_init(coder, allocator));
@@ -147,11 +146,12 @@ stream_encode(lzma_coder *coder, lzma_allocator *allocator,
 	}
 
 	case SEQ_BLOCK_ENCODE: {
-		static const lzma_action convert[4] = {
+		static const lzma_action convert[LZMA_ACTION_MAX + 1] = {
 			LZMA_RUN,
 			LZMA_SYNC_FLUSH,
 			LZMA_FINISH,
 			LZMA_FINISH,
+			LZMA_FINISH,
 		};
 
 		const lzma_ret ret = coder->block_encoder.code(
@@ -209,7 +209,7 @@ stream_encode(lzma_coder *coder, lzma_allocator *allocator,
 
 
 static void
-stream_encoder_end(lzma_coder *coder, lzma_allocator *allocator)
+stream_encoder_end(lzma_coder *coder, const lzma_allocator *allocator)
 {
 	lzma_next_end(&coder->block_encoder, allocator);
 	lzma_next_end(&coder->index_encoder, allocator);
@@ -224,7 +224,7 @@ stream_encoder_end(lzma_coder *coder, lzma_allocator *allocator)
 
 
 static lzma_ret
-stream_encoder_update(lzma_coder *coder, lzma_allocator *allocator,
+stream_encoder_update(lzma_coder *coder, const lzma_allocator *allocator,
 		const lzma_filter *filters,
 		const lzma_filter *reversed_filters)
 {
@@ -262,11 +262,11 @@ stream_encoder_update(lzma_coder *coder, lzma_allocator *allocator,
 }
 
 
-extern lzma_ret
-lzma_stream_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+static lzma_ret
+stream_encoder_init(lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter *filters, lzma_check check)
 {
-	lzma_next_coder_init(&lzma_stream_encoder_init, next, allocator);
+	lzma_next_coder_init(&stream_encoder_init, next, allocator);
 
 	if (filters == NULL)
 		return LZMA_PROG_ERROR;
@@ -320,11 +320,12 @@ extern LZMA_API(lzma_ret)
 lzma_stream_encoder(lzma_stream *strm,
 		const lzma_filter *filters, lzma_check check)
 {
-	lzma_next_strm_init(lzma_stream_encoder_init, strm, filters, check);
+	lzma_next_strm_init(stream_encoder_init, strm, filters, check);
 
 	strm->internal->supported_actions[LZMA_RUN] = true;
 	strm->internal->supported_actions[LZMA_SYNC_FLUSH] = true;
 	strm->internal->supported_actions[LZMA_FULL_FLUSH] = true;
+	strm->internal->supported_actions[LZMA_FULL_BARRIER] = true;
 	strm->internal->supported_actions[LZMA_FINISH] = true;
 
 	return LZMA_OK;

src/liblzma/delta/delta_common.c

@@ -15,7 +15,7 @@
 
 
 static void
-delta_coder_end(lzma_coder *coder, lzma_allocator *allocator)
+delta_coder_end(lzma_coder *coder, const lzma_allocator *allocator)
 {
 	lzma_next_end(&coder->next, allocator);
 	lzma_free(coder, allocator);
@@ -24,7 +24,7 @@ delta_coder_end(lzma_coder *coder, lzma_allocator *allocator)
 
 
 extern lzma_ret
-lzma_delta_coder_init(lzma_next_coder *next, lzma_allocator *allocator,
+lzma_delta_coder_init(lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter_info *filters)
 {
 	// Allocate memory for the decoder if needed.

src/liblzma/delta/delta_decoder.c

@@ -27,7 +27,7 @@ decode_buffer(lzma_coder *coder, uint8_t *buffer, size_t size)
 
 
 static lzma_ret
-delta_decode(lzma_coder *coder, lzma_allocator *allocator,
+delta_decode(lzma_coder *coder, const lzma_allocator *allocator,
 		const uint8_t *restrict in, size_t *restrict in_pos,
 		size_t in_size, uint8_t *restrict out,
 		size_t *restrict out_pos, size_t out_size, lzma_action action)
@@ -47,7 +47,7 @@ delta_decode(lzma_coder *coder, lzma_allocator *allocator,
 
 
 extern lzma_ret
-lzma_delta_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+lzma_delta_decoder_init(lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter_info *filters)
 {
 	next->code = &delta_decode;
@@ -56,7 +56,7 @@ lzma_delta_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
 
 
 extern lzma_ret
-lzma_delta_props_decode(void **options, lzma_allocator *allocator,
+lzma_delta_props_decode(void **options, const lzma_allocator *allocator,
 		const uint8_t *props, size_t props_size)
 {
 	if (props_size != 1)

src/liblzma/delta/delta_decoder.h

@@ -16,10 +16,11 @@
 #include "delta_common.h"
 
 extern lzma_ret lzma_delta_decoder_init(lzma_next_coder *next,
-		lzma_allocator *allocator, const lzma_filter_info *filters);
+		const lzma_allocator *allocator,
+		const lzma_filter_info *filters);
 
 extern lzma_ret lzma_delta_props_decode(
-		void **options, lzma_allocator *allocator,
+		void **options, const lzma_allocator *allocator,
 		const uint8_t *props, size_t props_size);
 
 #endif

src/liblzma/delta/delta_encoder.c

@@ -49,7 +49,7 @@ encode_in_place(lzma_coder *coder, uint8_t *buffer, size_t size)
 
 
 static lzma_ret
-delta_encode(lzma_coder *coder, lzma_allocator *allocator,
+delta_encode(lzma_coder *coder, const lzma_allocator *allocator,
 		const uint8_t *restrict in, size_t *restrict in_pos,
 		size_t in_size, uint8_t *restrict out,
 		size_t *restrict out_pos, size_t out_size, lzma_action action)
@@ -84,7 +84,7 @@ delta_encode(lzma_coder *coder, lzma_allocator *allocator,
 
 
 static lzma_ret
-delta_encoder_update(lzma_coder *coder, lzma_allocator *allocator,
+delta_encoder_update(lzma_coder *coder, const lzma_allocator *allocator,
 		const lzma_filter *filters_null lzma_attribute((__unused__)),
 		const lzma_filter *reversed_filters)
 {
@@ -97,7 +97,7 @@ delta_encoder_update(lzma_coder *coder, lzma_allocator *allocator,
 
 
 extern lzma_ret
-lzma_delta_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+lzma_delta_encoder_init(lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter_info *filters)
 {
 	next->code = &delta_encode;

src/liblzma/delta/delta_encoder.h

@@ -16,7 +16,8 @@
 #include "delta_common.h"
 
 extern lzma_ret lzma_delta_encoder_init(lzma_next_coder *next,
-		lzma_allocator *allocator, const lzma_filter_info *filters);
+		const lzma_allocator *allocator,
+		const lzma_filter_info *filters);
 
 extern lzma_ret lzma_delta_props_encode(const void *options, uint8_t *out);
 

src/liblzma/delta/delta_private.h

@@ -31,7 +31,7 @@ struct lzma_coder_s {
 
 
 extern lzma_ret lzma_delta_coder_init(
-		lzma_next_coder *next, lzma_allocator *allocator,
+		lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter_info *filters);
 
 #endif

src/liblzma/liblzma.map

@@ -0,0 +1,108 @@
+XZ_5.0 {
+global:
+	lzma_alone_decoder;
+	lzma_alone_encoder;
+	lzma_auto_decoder;
+	lzma_block_buffer_bound;
+	lzma_block_buffer_decode;
+	lzma_block_buffer_encode;
+	lzma_block_compressed_size;
+	lzma_block_decoder;
+	lzma_block_encoder;
+	lzma_block_header_decode;
+	lzma_block_header_encode;
+	lzma_block_header_size;
+	lzma_block_total_size;
+	lzma_block_unpadded_size;
+	lzma_check_is_supported;
+	lzma_check_size;
+	lzma_code;
+	lzma_crc32;
+	lzma_crc64;
+	lzma_easy_buffer_encode;
+	lzma_easy_decoder_memusage;
+	lzma_easy_encoder;
+	lzma_easy_encoder_memusage;
+	lzma_end;
+	lzma_filter_decoder_is_supported;
+	lzma_filter_encoder_is_supported;
+	lzma_filter_flags_decode;
+	lzma_filter_flags_encode;
+	lzma_filter_flags_size;
+	lzma_filters_copy;
+	lzma_filters_update;
+	lzma_get_check;
+	lzma_index_append;
+	lzma_index_block_count;
+	lzma_index_buffer_decode;
+	lzma_index_buffer_encode;
+	lzma_index_cat;
+	lzma_index_checks;
+	lzma_index_decoder;
+	lzma_index_dup;
+	lzma_index_encoder;
+	lzma_index_end;
+	lzma_index_file_size;
+	lzma_index_hash_append;
+	lzma_index_hash_decode;
+	lzma_index_hash_end;
+	lzma_index_hash_init;
+	lzma_index_hash_size;
+	lzma_index_init;
+	lzma_index_iter_init;
+	lzma_index_iter_locate;
+	lzma_index_iter_next;
+	lzma_index_iter_rewind;
+	lzma_index_memusage;
+	lzma_index_memused;
+	lzma_index_size;
+	lzma_index_stream_count;
+	lzma_index_stream_flags;
+	lzma_index_stream_padding;
+	lzma_index_stream_size;
+	lzma_index_total_size;
+	lzma_index_uncompressed_size;
+	lzma_lzma_preset;
+	lzma_memlimit_get;
+	lzma_memlimit_set;
+	lzma_memusage;
+	lzma_mf_is_supported;
+	lzma_mode_is_supported;
+	lzma_physmem;
+	lzma_properties_decode;
+	lzma_properties_encode;
+	lzma_properties_size;
+	lzma_raw_buffer_decode;
+	lzma_raw_buffer_encode;
+	lzma_raw_decoder;
+	lzma_raw_decoder_memusage;
+	lzma_raw_encoder;
+	lzma_raw_encoder_memusage;
+	lzma_stream_buffer_bound;
+	lzma_stream_buffer_decode;
+	lzma_stream_buffer_encode;
+	lzma_stream_decoder;
+	lzma_stream_encoder;
+	lzma_stream_flags_compare;
+	lzma_stream_footer_decode;
+	lzma_stream_footer_encode;
+	lzma_stream_header_decode;
+	lzma_stream_header_encode;
+	lzma_version_number;
+	lzma_version_string;
+	lzma_vli_decode;
+	lzma_vli_encode;
+	lzma_vli_size;
+};
+
+XZ_5.1.4beta {
+global:
+	lzma_block_uncomp_encode;
+	lzma_cputhreads;
+	lzma_get_progress;
+	lzma_stream_encoder_mt;
+	lzma_stream_encoder_mt_memusage;
+
+local:
+	*;
+} XZ_5.0;

src/liblzma/liblzma.pc.in

@@ -16,4 +16,4 @@ URL: @PACKAGE_URL@
 Version: @PACKAGE_VERSION@
 Cflags: -I${includedir}
 Libs: -L${libdir} -llzma
-Libs.private: @PTHREAD_CFLAGS@ @PTHREAD_LIBS@
+Libs.private: @PTHREAD_CFLAGS@ @LIBS@

src/liblzma/lz/lz_decoder.c

@@ -126,7 +126,7 @@ decode_buffer(lzma_coder *coder,
 
 static lzma_ret
 lz_decode(lzma_coder *coder,
-		lzma_allocator *allocator lzma_attribute((__unused__)),
+		const lzma_allocator *allocator lzma_attribute((__unused__)),
 		const uint8_t *restrict in, size_t *restrict in_pos,
 		size_t in_size, uint8_t *restrict out,
 		size_t *restrict out_pos, size_t out_size,
@@ -184,7 +184,7 @@ lz_decode(lzma_coder *coder,
 
 
 static void
-lz_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
+lz_decoder_end(lzma_coder *coder, const lzma_allocator *allocator)
 {
 	lzma_next_end(&coder->next, allocator);
 	lzma_free(coder->dict.buf, allocator);
@@ -200,10 +200,10 @@ lz_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
 
 
 extern lzma_ret
-lzma_lz_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+lzma_lz_decoder_init(lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter_info *filters,
 		lzma_ret (*lz_init)(lzma_lz_decoder *lz,
-			lzma_allocator *allocator, const void *options,
+			const lzma_allocator *allocator, const void *options,
 			lzma_lz_options *lz_options))
 {
 	// Allocate the base structure if it isn't already allocated.

src/liblzma/lz/lz_decoder.h

@@ -67,7 +67,7 @@ typedef struct {
 			lzma_vli uncompressed_size);
 
 	/// Free allocated resources
-	void (*end)(lzma_coder *coder, lzma_allocator *allocator);
+	void (*end)(lzma_coder *coder, const lzma_allocator *allocator);
 
 } lzma_lz_decoder;
 
@@ -83,9 +83,10 @@ typedef struct {
 
 
 extern lzma_ret lzma_lz_decoder_init(lzma_next_coder *next,
-		lzma_allocator *allocator, const lzma_filter_info *filters,
+		const lzma_allocator *allocator,
+		const lzma_filter_info *filters,
 		lzma_ret (*lz_init)(lzma_lz_decoder *lz,
-			lzma_allocator *allocator, const void *options,
+			const lzma_allocator *allocator, const void *options,
 			lzma_lz_options *lz_options));
 
 extern uint64_t lzma_lz_decoder_memusage(size_t dictionary_size);

src/liblzma/lz/lz_encoder.c

@@ -20,6 +20,8 @@
 #	include "lz_encoder_hash_table.h"
 #endif
 
+#include "memcmplen.h"
+
 
 struct lzma_coder_s {
 	/// LZ-based encoder e.g. LZMA
@@ -76,8 +78,9 @@ move_window(lzma_mf *mf)
 /// This function must not be called once it has returned LZMA_STREAM_END.
 ///
 static lzma_ret
-fill_window(lzma_coder *coder, lzma_allocator *allocator, const uint8_t *in,
-		size_t *in_pos, size_t in_size, lzma_action action)
+fill_window(lzma_coder *coder, const lzma_allocator *allocator,
+		const uint8_t *in, size_t *in_pos, size_t in_size,
+		lzma_action action)
 {
 	assert(coder->mf.read_pos <= coder->mf.write_pos);
 
@@ -148,7 +151,7 @@ fill_window(lzma_coder *coder, lzma_allocator *allocator, const uint8_t *in,
 
 
 static lzma_ret
-lz_encode(lzma_coder *coder, lzma_allocator *allocator,
+lz_encode(lzma_coder *coder, const lzma_allocator *allocator,
 		const uint8_t *restrict in, size_t *restrict in_pos,
 		size_t in_size,
 		uint8_t *restrict out, size_t *restrict out_pos,
@@ -179,7 +182,7 @@ lz_encode(lzma_coder *coder, lzma_allocator *allocator,
 
 
 static bool
-lz_encoder_prepare(lzma_mf *mf, lzma_allocator *allocator,
+lz_encoder_prepare(lzma_mf *mf, const lzma_allocator *allocator,
 		const lzma_lz_options *lz_options)
 {
 	// For now, the dictionary size is limited to 1.5 GiB. This may grow
@@ -325,25 +328,22 @@ lz_encoder_prepare(lzma_mf *mf, lzma_allocator *allocator,
 		hs += HASH_4_SIZE;
 */
 
-	// If the above code calculating hs is modified, make sure that
-	// this assertion stays valid (UINT32_MAX / 5 is not strictly the
-	// exact limit). If it doesn't, you need to calculate that
-	// hash_size_sum + sons_count cannot overflow.
-	assert(hs < UINT32_MAX / 5);
-
-	const uint32_t old_count = mf->hash_size_sum + mf->sons_count;
-	mf->hash_size_sum = hs;
+	const uint32_t old_hash_count = mf->hash_count;
+	const uint32_t old_sons_count = mf->sons_count;
+	mf->hash_count = hs;
 	mf->sons_count = mf->cyclic_size;
 	if (is_bt)
 		mf->sons_count *= 2;
 
-	const uint32_t new_count = mf->hash_size_sum + mf->sons_count;
-
 	// Deallocate the old hash array if it exists and has different size
 	// than what is needed now.
-	if (old_count != new_count) {
+	if (old_hash_count != mf->hash_count
+			|| old_sons_count != mf->sons_count) {
 		lzma_free(mf->hash, allocator);
 		mf->hash = NULL;
+
+		lzma_free(mf->son, allocator);
+		mf->son = NULL;
 	}
 
 	// Maximum number of match finder cycles
@@ -360,14 +360,23 @@ lz_encoder_prepare(lzma_mf *mf, lzma_allocator *allocator,
 
 
 static bool
-lz_encoder_init(lzma_mf *mf, lzma_allocator *allocator,
+lz_encoder_init(lzma_mf *mf, const lzma_allocator *allocator,
 		const lzma_lz_options *lz_options)
 {
 	// Allocate the history buffer.
 	if (mf->buffer == NULL) {
-		mf->buffer = lzma_alloc(mf->size, allocator);
+		// lzma_memcmplen() is used for the dictionary buffer
+		// so we need to allocate a few extra bytes to prevent
+		// it from reading past the end of the buffer.
+		mf->buffer = lzma_alloc(mf->size + LZMA_MEMCMPLEN_EXTRA,
+				allocator);
 		if (mf->buffer == NULL)
 			return true;
+
+		// Keep Valgrind happy with lzma_memcmplen() and initialize
+		// the extra bytes whose value may get read but which will
+		// effectively get ignored.
+		memzero(mf->buffer + mf->size, LZMA_MEMCMPLEN_EXTRA);
 	}
 
 	// Use cyclic_size as initial mf->offset. This allows
@@ -381,44 +390,49 @@ lz_encoder_init(lzma_mf *mf, lzma_allocator *allocator,
 	mf->write_pos = 0;
 	mf->pending = 0;
 
-	// Allocate match finder's hash array.
-	const size_t alloc_count = mf->hash_size_sum + mf->sons_count;
-
 #if UINT32_MAX >= SIZE_MAX / 4
 	// Check for integer overflow. (Huge dictionaries are not
 	// possible on 32-bit CPU.)
-	if (alloc_count > SIZE_MAX / sizeof(uint32_t))
+	if (mf->hash_count > SIZE_MAX / sizeof(uint32_t)
+			|| mf->sons_count > SIZE_MAX / sizeof(uint32_t))
 		return true;
 #endif
 
+	// Allocate and initialize the hash table. Since EMPTY_HASH_VALUE
+	// is zero, we can use lzma_alloc_zero() or memzero() for mf->hash.
+	//
+	// We don't need to initialize mf->son, but not doing that may
+	// make Valgrind complain in normalization (see normalize() in
+	// lz_encoder_mf.c). Skipping the initialization is *very* good
+	// when big dictionary is used but only small amount of data gets
+	// actually compressed: most of the mf->son won't get actually
+	// allocated by the kernel, so we avoid wasting RAM and improve
+	// initialization speed a lot.
 	if (mf->hash == NULL) {
-		mf->hash = lzma_alloc(alloc_count * sizeof(uint32_t),
+		mf->hash = lzma_alloc_zero(mf->hash_count * sizeof(uint32_t),
 				allocator);
-		if (mf->hash == NULL)
+		mf->son = lzma_alloc(mf->sons_count * sizeof(uint32_t),
+				allocator);
+
+		if (mf->hash == NULL || mf->son == NULL) {
+			lzma_free(mf->hash, allocator);
+			mf->hash = NULL;
+
+			lzma_free(mf->son, allocator);
+			mf->son = NULL;
+
 			return true;
+		}
+	} else {
+/*
+		for (uint32_t i = 0; i < mf->hash_count; ++i)
+			mf->hash[i] = EMPTY_HASH_VALUE;
+*/
+		memzero(mf->hash, mf->hash_count * sizeof(uint32_t));
 	}
 
-	mf->son = mf->hash + mf->hash_size_sum;
 	mf->cyclic_pos = 0;
 
-	// Initialize the hash table. Since EMPTY_HASH_VALUE is zero, we
-	// can use memset().
-/*
-	for (uint32_t i = 0; i < hash_size_sum; ++i)
-		mf->hash[i] = EMPTY_HASH_VALUE;
-*/
-	memzero(mf->hash, (size_t)(mf->hash_size_sum) * sizeof(uint32_t));
-
-	// We don't need to initialize mf->son, but not doing that will
-	// make Valgrind complain in normalization (see normalize() in
-	// lz_encoder_mf.c).
-	//
-	// Skipping this initialization is *very* good when big dictionary is
-	// used but only small amount of data gets actually compressed: most
-	// of the mf->hash won't get actually allocated by the kernel, so
-	// we avoid wasting RAM and improve initialization speed a lot.
-	//memzero(mf->son, (size_t)(mf->sons_count) * sizeof(uint32_t));
-
 	// Handle preset dictionary.
 	if (lz_options->preset_dict != NULL
 			&& lz_options->preset_dict_size > 0) {
@@ -445,7 +459,8 @@ lzma_lz_encoder_memusage(const lzma_lz_options *lz_options)
 	lzma_mf mf = {
 		.buffer = NULL,
 		.hash = NULL,
-		.hash_size_sum = 0,
+		.son = NULL,
+		.hash_count = 0,
 		.sons_count = 0,
 	};
 
@@ -454,17 +469,17 @@ lzma_lz_encoder_memusage(const lzma_lz_options *lz_options)
 		return UINT64_MAX;
 
 	// Calculate the memory usage.
-	return (uint64_t)(mf.hash_size_sum + mf.sons_count)
-				* sizeof(uint32_t)
-			+ (uint64_t)(mf.size) + sizeof(lzma_coder);
+	return ((uint64_t)(mf.hash_count) + mf.sons_count) * sizeof(uint32_t)
+			+ mf.size + sizeof(lzma_coder);
 }
 
 
 static void
-lz_encoder_end(lzma_coder *coder, lzma_allocator *allocator)
+lz_encoder_end(lzma_coder *coder, const lzma_allocator *allocator)
 {
 	lzma_next_end(&coder->next, allocator);
 
+	lzma_free(coder->mf.son, allocator);
 	lzma_free(coder->mf.hash, allocator);
 	lzma_free(coder->mf.buffer, allocator);
 
@@ -479,7 +494,7 @@ lz_encoder_end(lzma_coder *coder, lzma_allocator *allocator)
 
 
 static lzma_ret
-lz_encoder_update(lzma_coder *coder, lzma_allocator *allocator,
+lz_encoder_update(lzma_coder *coder, const lzma_allocator *allocator,
 		const lzma_filter *filters_null lzma_attribute((__unused__)),
 		const lzma_filter *reversed_filters)
 {
@@ -495,10 +510,10 @@ lz_encoder_update(lzma_coder *coder, lzma_allocator *allocator,
 
 
 extern lzma_ret
-lzma_lz_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+lzma_lz_encoder_init(lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter_info *filters,
 		lzma_ret (*lz_init)(lzma_lz_encoder *lz,
-			lzma_allocator *allocator, const void *options,
+			const lzma_allocator *allocator, const void *options,
 			lzma_lz_options *lz_options))
 {
 #ifdef HAVE_SMALL
@@ -522,7 +537,8 @@ lzma_lz_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
 
 		next->coder->mf.buffer = NULL;
 		next->coder->mf.hash = NULL;
-		next->coder->mf.hash_size_sum = 0;
+		next->coder->mf.son = NULL;
+		next->coder->mf.hash_count = 0;
 		next->coder->mf.sons_count = 0;
 
 		next->coder->next = LZMA_NEXT_CODER_INIT;

src/liblzma/lz/lz_encoder.h

@@ -119,7 +119,7 @@ struct lzma_mf_s {
 	lzma_action action;
 
 	/// Number of elements in hash[]
-	uint32_t hash_size_sum;
+	uint32_t hash_count;
 
 	/// Number of elements in son[]
 	uint32_t sons_count;
@@ -199,7 +199,7 @@ typedef struct {
 			size_t *restrict out_pos, size_t out_size);
 
 	/// Free allocated resources
-	void (*end)(lzma_coder *coder, lzma_allocator *allocator);
+	void (*end)(lzma_coder *coder, const lzma_allocator *allocator);
 
 	/// Update the options in the middle of the encoding.
 	lzma_ret (*options_update)(lzma_coder *coder,
@@ -296,10 +296,10 @@ mf_read(lzma_mf *mf, uint8_t *out, size_t *out_pos, size_t out_size,
 
 
 extern lzma_ret lzma_lz_encoder_init(
-		lzma_next_coder *next, lzma_allocator *allocator,
+		lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter_info *filters,
 		lzma_ret (*lz_init)(lzma_lz_encoder *lz,
-			lzma_allocator *allocator, const void *options,
+			const lzma_allocator *allocator, const void *options,
 			lzma_lz_options *lz_options));
 
 

src/liblzma/lz/lz_encoder_mf.c

@@ -13,6 +13,7 @@
 
 #include "lz_encoder.h"
 #include "lz_encoder_hash.h"
+#include "memcmplen.h"
 
 
 /// \brief      Find matches starting from the current byte
@@ -65,9 +66,7 @@ lzma_mf_find(lzma_mf *mf, uint32_t *count_ptr, lzma_match *matches)
 			// here because the match distances are zero based.
 			const uint8_t *p2 = p1 - matches[count - 1].dist - 1;
 
-			while (len_best < limit
-					&& p1[len_best] == p2[len_best])
-				++len_best;
+			len_best = lzma_memcmplen(p1, p2, len_best, limit);
 		}
 	}
 
@@ -116,24 +115,27 @@ normalize(lzma_mf *mf)
 			= (MUST_NORMALIZE_POS - mf->cyclic_size);
 				// & (~(UINT32_C(1) << 10) - 1);
 
-	const uint32_t count = mf->hash_size_sum + mf->sons_count;
-	uint32_t *hash = mf->hash;
-
-	for (uint32_t i = 0; i < count; ++i) {
+	for (uint32_t i = 0; i < mf->hash_count; ++i) {
 		// If the distance is greater than the dictionary size,
 		// we can simply mark the hash element as empty.
-		//
-		// NOTE: Only the first mf->hash_size_sum elements are
-		// initialized for sure. There may be uninitialized elements
-		// in mf->son. Since we go through both mf->hash and
-		// mf->son here in normalization, Valgrind may complain
-		// that the "if" below depends on uninitialized value. In
-		// this case it is safe to ignore the warning. See also the
-		// comments in lz_encoder_init() in lz_encoder.c.
-		if (hash[i] <= subvalue)
-			hash[i] = EMPTY_HASH_VALUE;
+		if (mf->hash[i] <= subvalue)
+			mf->hash[i] = EMPTY_HASH_VALUE;
 		else
-			hash[i] -= subvalue;
+			mf->hash[i] -= subvalue;
+	}
+
+	for (uint32_t i = 0; i < mf->sons_count; ++i) {
+		// Do the same for mf->son.
+		//
+		// NOTE: There may be uninitialized elements in mf->son.
+		// Valgrind may complain that the "if" below depends on
+		// an uninitialized value. In this case it is safe to ignore
+		// the warning. See also the comments in lz_encoder_init()
+		// in lz_encoder.c.
+		if (mf->son[i] <= subvalue)
+			mf->son[i] = EMPTY_HASH_VALUE;
+		else
+			mf->son[i] -= subvalue;
 	}
 
 	// Update offset to match the new locations.
@@ -269,10 +271,7 @@ hc_find_func(
 				+ (delta > cyclic_pos ? cyclic_size : 0)];
 
 		if (pb[len_best] == cur[len_best] && pb[0] == cur[0]) {
-			uint32_t len = 0;
-			while (++len != len_limit)
-				if (pb[len] != cur[len])
-					break;
+			uint32_t len = lzma_memcmplen(pb, cur, 1, len_limit);
 
 			if (len_best < len) {
 				len_best = len;
@@ -318,9 +317,8 @@ lzma_mf_hc3_find(lzma_mf *mf, lzma_match *matches)
 	uint32_t len_best = 2;
 
 	if (delta2 < mf->cyclic_size && *(cur - delta2) == *cur) {
-		for ( ; len_best != len_limit; ++len_best)
-			if (*(cur + len_best - delta2) != cur[len_best])
-				break;
+		len_best = lzma_memcmplen(cur - delta2, cur,
+				len_best, len_limit);
 
 		matches[0].len = len_best;
 		matches[0].dist = delta2 - 1;
@@ -397,9 +395,8 @@ lzma_mf_hc4_find(lzma_mf *mf, lzma_match *matches)
 	}
 
 	if (matches_count != 0) {
-		for ( ; len_best != len_limit; ++len_best)
-			if (*(cur + len_best - delta2) != cur[len_best])
-				break;
+		len_best = lzma_memcmplen(cur - delta2, cur,
+				len_best, len_limit);
 
 		matches[matches_count - 1].len = len_best;
 
@@ -484,9 +481,7 @@ bt_find_func(
 		uint32_t len = my_min(len0, len1);
 
 		if (pb[len] == cur[len]) {
-			while (++len != len_limit)
-				if (pb[len] != cur[len])
-					break;
+			len = lzma_memcmplen(pb, cur, len + 1, len_limit);
 
 			if (len_best < len) {
 				len_best = len;
@@ -549,9 +544,7 @@ bt_skip_func(
 		uint32_t len = my_min(len0, len1);
 
 		if (pb[len] == cur[len]) {
-			while (++len != len_limit)
-				if (pb[len] != cur[len])
-					break;
+			len = lzma_memcmplen(pb, cur, len + 1, len_limit);
 
 			if (len == len_limit) {
 				*ptr1 = pair[0];
@@ -639,9 +632,8 @@ lzma_mf_bt3_find(lzma_mf *mf, lzma_match *matches)
 	uint32_t len_best = 2;
 
 	if (delta2 < mf->cyclic_size && *(cur - delta2) == *cur) {
-		for ( ; len_best != len_limit; ++len_best)
-			if (*(cur + len_best - delta2) != cur[len_best])
-				break;
+		len_best = lzma_memcmplen(
+				cur, cur - delta2, len_best, len_limit);
 
 		matches[0].len = len_best;
 		matches[0].dist = delta2 - 1;
@@ -712,9 +704,8 @@ lzma_mf_bt4_find(lzma_mf *mf, lzma_match *matches)
 	}
 
 	if (matches_count != 0) {
-		for ( ; len_best != len_limit; ++len_best)
-			if (*(cur + len_best - delta2) != cur[len_best])
-				break;
+		len_best = lzma_memcmplen(
+				cur, cur - delta2, len_best, len_limit);
 
 		matches[matches_count - 1].len = len_best;
 

src/liblzma/lzma/fastpos.h

@@ -14,15 +14,15 @@
 #ifndef LZMA_FASTPOS_H
 #define LZMA_FASTPOS_H
 
-// LZMA encodes match distances (positions) by storing the highest two
-// bits using a six-bit value [0, 63], and then the missing lower bits.
-// Dictionary size is also stored using this encoding in the new .lzma
+// LZMA encodes match distances by storing the highest two bits using
+// a six-bit value [0, 63], and then the missing lower bits.
+// Dictionary size is also stored using this encoding in the .xz
 // file format header.
 //
 // fastpos.h provides a way to quickly find out the correct six-bit
 // values. The following table gives some examples of this encoding:
 //
-//      pos   return
+//     dist   return
 //       0       0
 //       1       1
 //       2       2
@@ -48,10 +48,10 @@
 // Provided functions or macros
 // ----------------------------
 //
-// get_pos_slot(pos) is the basic version. get_pos_slot_2(pos)
-// assumes that pos >= FULL_DISTANCES, thus the result is at least
-// FULL_DISTANCES_BITS * 2. Using get_pos_slot(pos) instead of
-// get_pos_slot_2(pos) would give the same result, but get_pos_slot_2(pos)
+// get_dist_slot(dist) is the basic version. get_dist_slot_2(dist)
+// assumes that dist >= FULL_DISTANCES, thus the result is at least
+// FULL_DISTANCES_BITS * 2. Using get_dist_slot(dist) instead of
+// get_dist_slot_2(dist) would give the same result, but get_dist_slot_2(dist)
 // should be tiny bit faster due to the assumption being made.
 //
 //
@@ -76,13 +76,14 @@
 // slightly faster, but sometimes it is a lot slower.
 
 #ifdef HAVE_SMALL
-#	define get_pos_slot(pos) ((pos) <= 4 ? (pos) : get_pos_slot_2(pos))
+#	define get_dist_slot(dist) \
+		((dist) <= 4 ? (dist) : get_dist_slot_2(dist))
 
 static inline uint32_t
-get_pos_slot_2(uint32_t pos)
+get_dist_slot_2(uint32_t dist)
 {
-	const uint32_t i = bsr32(pos);
-	return (i + i) + ((pos >> (i - 1)) & 1);
+	const uint32_t i = bsr32(dist);
+	return (i + i) + ((dist >> (i - 1)) & 1);
 }
 
 
@@ -99,39 +100,39 @@ extern const uint8_t lzma_fastpos[1 << FASTPOS_BITS];
 #define fastpos_limit(extra, n) \
 	(UINT32_C(1) << (FASTPOS_BITS + fastpos_shift(extra, n)))
 
-#define fastpos_result(pos, extra, n) \
-	lzma_fastpos[(pos) >> fastpos_shift(extra, n)] \
+#define fastpos_result(dist, extra, n) \
+	lzma_fastpos[(dist) >> fastpos_shift(extra, n)] \
 			+ 2 * fastpos_shift(extra, n)
 
 
 static inline uint32_t
-get_pos_slot(uint32_t pos)
+get_dist_slot(uint32_t dist)
 {
 	// If it is small enough, we can pick the result directly from
 	// the precalculated table.
-	if (pos < fastpos_limit(0, 0))
-		return lzma_fastpos[pos];
+	if (dist < fastpos_limit(0, 0))
+		return lzma_fastpos[dist];
 
-	if (pos < fastpos_limit(0, 1))
-		return fastpos_result(pos, 0, 1);
+	if (dist < fastpos_limit(0, 1))
+		return fastpos_result(dist, 0, 1);
 
-	return fastpos_result(pos, 0, 2);
+	return fastpos_result(dist, 0, 2);
 }
 
 
 #ifdef FULL_DISTANCES_BITS
 static inline uint32_t
-get_pos_slot_2(uint32_t pos)
+get_dist_slot_2(uint32_t dist)
 {
-	assert(pos >= FULL_DISTANCES);
+	assert(dist >= FULL_DISTANCES);
 
-	if (pos < fastpos_limit(FULL_DISTANCES_BITS - 1, 0))
-		return fastpos_result(pos, FULL_DISTANCES_BITS - 1, 0);
+	if (dist < fastpos_limit(FULL_DISTANCES_BITS - 1, 0))
+		return fastpos_result(dist, FULL_DISTANCES_BITS - 1, 0);
 
-	if (pos < fastpos_limit(FULL_DISTANCES_BITS - 1, 1))
-		return fastpos_result(pos, FULL_DISTANCES_BITS - 1, 1);
+	if (dist < fastpos_limit(FULL_DISTANCES_BITS - 1, 1))
+		return fastpos_result(dist, FULL_DISTANCES_BITS - 1, 1);
 
-	return fastpos_result(pos, FULL_DISTANCES_BITS - 1, 2);
+	return fastpos_result(dist, FULL_DISTANCES_BITS - 1, 2);
 }
 #endif
 

src/liblzma/lzma/lzma2_decoder.c

@@ -209,7 +209,7 @@ lzma2_decode(lzma_coder *restrict coder, lzma_dict *restrict dict,
 
 
 static void
-lzma2_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
+lzma2_decoder_end(lzma_coder *coder, const lzma_allocator *allocator)
 {
 	assert(coder->lzma.end == NULL);
 	lzma_free(coder->lzma.coder, allocator);
@@ -221,7 +221,7 @@ lzma2_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
 
 
 static lzma_ret
-lzma2_decoder_init(lzma_lz_decoder *lz, lzma_allocator *allocator,
+lzma2_decoder_init(lzma_lz_decoder *lz, const lzma_allocator *allocator,
 		const void *opt, lzma_lz_options *lz_options)
 {
 	if (lz->coder == NULL) {
@@ -248,7 +248,7 @@ lzma2_decoder_init(lzma_lz_decoder *lz, lzma_allocator *allocator,
 
 
 extern lzma_ret
-lzma_lzma2_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+lzma_lzma2_decoder_init(lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter_info *filters)
 {
 	// LZMA2 can only be the last filter in the chain. This is enforced
@@ -269,7 +269,7 @@ lzma_lzma2_decoder_memusage(const void *options)
 
 
 extern lzma_ret
-lzma_lzma2_props_decode(void **options, lzma_allocator *allocator,
+lzma_lzma2_props_decode(void **options, const lzma_allocator *allocator,
 		const uint8_t *props, size_t props_size)
 {
 	if (props_size != 1)

src/liblzma/lzma/lzma2_decoder.h

@@ -17,12 +17,13 @@
 #include "common.h"
 
 extern lzma_ret lzma_lzma2_decoder_init(lzma_next_coder *next,
-		lzma_allocator *allocator, const lzma_filter_info *filters);
+		const lzma_allocator *allocator,
+		const lzma_filter_info *filters);
 
 extern uint64_t lzma_lzma2_decoder_memusage(const void *options);
 
 extern lzma_ret lzma_lzma2_props_decode(
-		void **options, lzma_allocator *allocator,
+		void **options, const lzma_allocator *allocator,
 		const uint8_t *props, size_t props_size);
 
 #endif

src/liblzma/lzma/lzma2_encoder.c

@@ -262,7 +262,7 @@ lzma2_encode(lzma_coder *restrict coder, lzma_mf *restrict mf,
 
 
 static void
-lzma2_encoder_end(lzma_coder *coder, lzma_allocator *allocator)
+lzma2_encoder_end(lzma_coder *coder, const lzma_allocator *allocator)
 {
 	lzma_free(coder->lzma, allocator);
 	lzma_free(coder, allocator);
@@ -304,7 +304,7 @@ lzma2_encoder_options_update(lzma_coder *coder, const lzma_filter *filter)
 
 
 static lzma_ret
-lzma2_encoder_init(lzma_lz_encoder *lz, lzma_allocator *allocator,
+lzma2_encoder_init(lzma_lz_encoder *lz, const lzma_allocator *allocator,
 		const void *options, lzma_lz_options *lz_options)
 {
 	if (options == NULL)
@@ -349,7 +349,7 @@ lzma2_encoder_init(lzma_lz_encoder *lz, lzma_allocator *allocator,
 
 
 extern lzma_ret
-lzma_lzma2_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+lzma_lzma2_encoder_init(lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter_info *filters)
 {
 	return lzma_lz_encoder_init(
@@ -387,7 +387,17 @@ lzma_lzma2_props_encode(const void *options, uint8_t *out)
 	if (d == UINT32_MAX)
 		out[0] = 40;
 	else
-		out[0] = get_pos_slot(d + 1) - 24;
+		out[0] = get_dist_slot(d + 1) - 24;
 
 	return LZMA_OK;
 }
+
+
+extern uint64_t
+lzma_lzma2_block_size(const void *options)
+{
+	const lzma_options_lzma *const opt = options;
+
+	// Use at least 1 MiB to keep compression ratio better.
+	return my_max((uint64_t)(opt->dict_size) * 3, UINT64_C(1) << 20);
+}

src/liblzma/lzma/lzma2_encoder.h

@@ -31,11 +31,13 @@
 
 
 extern lzma_ret lzma_lzma2_encoder_init(
-		lzma_next_coder *next, lzma_allocator *allocator,
+		lzma_next_coder *next, const lzma_allocator *allocator,
 		const lzma_filter_info *filters);
 
 extern uint64_t lzma_lzma2_encoder_memusage(const void *options);
 
 extern lzma_ret lzma_lzma2_props_encode(const void *options, uint8_t *out);
 
+extern uint64_t lzma_lzma2_block_size(const void *options);
+
 #endif

src/liblzma/lzma/lzma_common.h

@@ -171,53 +171,54 @@ literal_init(probability (*probs)[LITERAL_CODER_SIZE],
 // Match distance //
 ////////////////////
 
-// Different set of probabilities is used for match distances that have very
+// Different sets of probabilities are used for match distances that have very
 // short match length: Lengths of 2, 3, and 4 bytes have a separate set of
 // probabilities for each length. The matches with longer length use a shared
 // set of probabilities.
-#define LEN_TO_POS_STATES 4
+#define DIST_STATES 4
 
 // Macro to get the index of the appropriate probability array.
-#define get_len_to_pos_state(len) \
-	((len) < LEN_TO_POS_STATES + MATCH_LEN_MIN \
+#define get_dist_state(len) \
+	((len) < DIST_STATES + MATCH_LEN_MIN \
 		? (len) - MATCH_LEN_MIN \
-		: LEN_TO_POS_STATES - 1)
+		: DIST_STATES - 1)
 
-// The highest two bits of a match distance (pos slot) are encoded using six
-// bits. See fastpos.h for more explanation.
-#define POS_SLOT_BITS 6
-#define POS_SLOTS (1 << POS_SLOT_BITS)
+// The highest two bits of a match distance (distance slot) are encoded
+// using six bits. See fastpos.h for more explanation.
+#define DIST_SLOT_BITS 6
+#define DIST_SLOTS (1 << DIST_SLOT_BITS)
 
 // Match distances up to 127 are fully encoded using probabilities. Since
-// the highest two bits (pos slot) are always encoded using six bits, the
-// distances 0-3 don't need any additional bits to encode, since the pos
-// slot itself is the same as the actual distance. START_POS_MODEL_INDEX
-// indicates the first pos slot where at least one additional bit is needed.
-#define START_POS_MODEL_INDEX 4
+// the highest two bits (distance slot) are always encoded using six bits,
+// the distances 0-3 don't need any additional bits to encode, since the
+// distance slot itself is the same as the actual distance. DIST_MODEL_START
+// indicates the first distance slot where at least one additional bit is
+// needed.
+#define DIST_MODEL_START 4
 
 // Match distances greater than 127 are encoded in three pieces:
-//   - pos slot: the highest two bits
+//   - distance slot: the highest two bits
 //   - direct bits: 2-26 bits below the highest two bits
 //   - alignment bits: four lowest bits
 //
 // Direct bits don't use any probabilities.
 //
-// The pos slot value of 14 is for distances 128-191 (see the table in
+// The distance slot value of 14 is for distances 128-191 (see the table in
 // fastpos.h to understand why).
-#define END_POS_MODEL_INDEX 14
+#define DIST_MODEL_END 14
 
-// Pos slots that indicate a distance <= 127.
-#define FULL_DISTANCES_BITS (END_POS_MODEL_INDEX / 2)
+// Distance slots that indicate a distance <= 127.
+#define FULL_DISTANCES_BITS (DIST_MODEL_END / 2)
 #define FULL_DISTANCES (1 << FULL_DISTANCES_BITS)
 
 // For match distances greater than 127, only the highest two bits and the
 // lowest four bits (alignment) is encoded using probabilities.
 #define ALIGN_BITS 4
-#define ALIGN_TABLE_SIZE (1 << ALIGN_BITS)
-#define ALIGN_MASK (ALIGN_TABLE_SIZE - 1)
+#define ALIGN_SIZE (1 << ALIGN_BITS)
+#define ALIGN_MASK (ALIGN_SIZE - 1)
 
 // LZMA remembers the four most recent match distances. Reusing these distances
 // tends to take less space than re-encoding the actual distance value.
-#define REP_DISTANCES 4
+#define REPS 4
 
 #endif