Bump the version number to 5.1.2alpha.

The decoder bug was fixed in 5.0.2 instead of 5.0.3.

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

@@ -318,6 +318,11 @@ XZ Utils Installation
                 single-threaded applications and want to avoid dependency
                 on libpthread.
 
+    --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
                 run-time consistency checks. It makes the code slower, so

Makefile.am

@@ -95,6 +95,7 @@ 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

@@ -2,6 +2,90 @@
 XZ Utils Release Notes
 ======================
 
+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.
+
+
 5.0.4 (2012-06-22)
 
     * liblzma:

THANKS

@@ -28,6 +28,7 @@ has been important. :-) In alphabetical order:
   - Denis Excoffier
   - Michael Felt
   - Mike Frysinger
+  - Bill Glessner
   - Jason Gorski
   - Juan Manuel Guerrero
   - Joachim Henke
@@ -47,6 +48,7 @@ has been important. :-) In alphabetical order:
   - Bela Lubkin
   - Gregory Margo
   - Jim Meyering
+  - Arkadiusz Miskiewicz
   - Rafał Mużyło
   - Adrien Nader
   - Hongbo Ni

TODO

@@ -32,14 +32,27 @@ 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
 ----------------
 
+    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
 
@@ -50,6 +63,11 @@ 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.

configure.ac

@@ -403,6 +403,33 @@ AC_ARG_ENABLE([scripts], [AC_HELP_STRING([--disable-scripts],
 AM_CONDITIONAL([COND_SCRIPTS], [test x$enable_scripts != 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$enable_symbol_versions" = xyes])
+
+
 ###############################################################################
 # Checks for programs.
 ###############################################################################
@@ -439,7 +466,16 @@ if test "x$enable_threads" = xyes; then
 	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.
+
+	# These are nice to have but not mandatory.
+	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
 fi
+AM_CONDITIONAL([COND_THREADS], [test "x$ax_pthread_ok" = xyes])
 
 echo
 echo "Initializing Libtool:"
@@ -521,12 +557,69 @@ 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])
+
 
 ###############################################################################
 # If using GCC, set some additional AM_CFLAGS:
@@ -650,9 +743,8 @@ 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

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.
+

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 +10,218 @@
 //
 ///////////////////////////////////////////////////////////////////////////////
 
+#ifndef MYTHREAD_H
+#define MYTHREAD_H
+
 #include "sysdefs.h"
 
 
 #ifdef HAVE_PTHREAD
-#	include <pthread.h>
 
-#	define mythread_once(func) \
-	do { \
-		static pthread_once_t once_ = PTHREAD_ONCE_INIT; \
-		pthread_once(&once_, &func); \
-	} while (0)
+////////////////////
+// Using pthreads //
+////////////////////
 
-#	define mythread_sigmask(how, set, oset) \
-		pthread_sigmask(how, set, oset)
+#include <sys/time.h>
+#include <pthread.h>
+#include <signal.h>
+#include <time.h>
+
+
+#ifdef __VMS
+// Do nothing on OpenVMS. It doesn't have pthread_sigmask().
+#define mythread_sigmask(how, set, oset) do { } while (0)
+#else
+/// \brief      Set the process signal mask
+///
+/// If threads are disabled, sigprocmask() is used instead
+/// of pthread_sigmask().
+#define mythread_sigmask(how, set, oset) \
+	pthread_sigmask(how, set, oset)
+#endif
+
+/// \brief      Call the given function once
+///
+/// If threads are disabled, a thread-unsafe version is used.
+#define mythread_once(func) \
+do { \
+	static pthread_once_t once_ = PTHREAD_ONCE_INIT; \
+	pthread_once(&once_, &func); \
+} while (0)
+
+
+/// \brief      Lock a mutex for a duration of a block
+///
+/// Perform pthread_mutex_lock(&mutex) in the beginning of a block
+/// and pthread_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 pthread_mutex_lock(&mutex)
+/// and pthread_mutex_unlock(&mutex) calls.
+///
+#define mythread_sync(mutex) mythread_sync_helper(mutex, __LINE__)
+#define mythread_sync_helper(mutex, line) \
+	for (unsigned int mythread_i_ ## line = 0; \
+			mythread_i_ ## line \
+				? (pthread_mutex_unlock(&(mutex)), 0) \
+				: (pthread_mutex_lock(&(mutex)), 1); \
+			mythread_i_ ## line = 1) \
+		for (unsigned int mythread_j_ ## line = 0; \
+				!mythread_j_ ## line; \
+				mythread_j_ ## line = 1)
+
+
+typedef struct {
+	/// Condition variable
+	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;
+
+
+/// \brief      Initialize a condition variable to use CLOCK_MONOTONIC
+///
+/// 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.
+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.
+#	endif
+
+	mycond->clk_id = CLOCK_REALTIME;
+#endif
+
+	return pthread_cond_init(&mycond->cond, NULL);
+}
+
+
+/// \brief      Convert relative time to absolute time for use with timed wait
+///
+/// The current time of the clock associated with the condition variable
+/// is added to the relative time in *ts.
+static inline void
+mythread_cond_abstime(const mythread_cond *mycond, struct timespec *ts)
+{
+#ifdef HAVE_CLOCK_GETTIME
+	struct timespec now;
+	clock_gettime(mycond->clk_id, &now);
+
+	ts->tv_sec += now.tv_sec;
+	ts->tv_nsec += now.tv_nsec;
+#else
+	(void)mycond;
+
+	struct timeval now;
+	gettimeofday(&now, NULL);
+
+	ts->tv_sec += now.tv_sec;
+	ts->tv_nsec += now.tv_usec * 1000L;
+#endif
+
+	// tv_nsec must stay in the range [0, 999_999_999].
+	if (ts->tv_nsec >= 1000000000L) {
+		ts->tv_nsec -= 1000000000L;
+		++ts->tv_sec;
+	}
+
+	return;
+}
+
+
+#define mythread_cond_wait(mycondptr, mutexptr) \
+	pthread_cond_wait(&(mycondptr)->cond, mutexptr)
+
+#define mythread_cond_timedwait(mycondptr, mutexptr, abstimeptr) \
+	pthread_cond_timedwait(&(mycondptr)->cond, mutexptr, abstimeptr)
+
+#define mythread_cond_signal(mycondptr) \
+	pthread_cond_signal(&(mycondptr)->cond)
+
+#define mythread_cond_broadcast(mycondptr) \
+	pthread_cond_broadcast(&(mycondptr)->cond)
+
+#define mythread_cond_destroy(mycondptr) \
+	pthread_cond_destroy(&(mycondptr)->cond)
+
+
+/// \brief      Create a thread with all signals blocked
+static inline int
+mythread_create(pthread_t *thread, void *(*func)(void *arg), void *arg)
+{
+	sigset_t old;
+	sigset_t all;
+	sigfillset(&all);
+
+	pthread_sigmask(SIG_SETMASK, &all, &old);
+	const int ret = pthread_create(thread, NULL, func, arg);
+	pthread_sigmask(SIG_SETMASK, &old, NULL);
+
+	return ret;
+}
 
 #else
 
-#	define mythread_once(func) \
-	do { \
-		static bool once_ = false; \
-		if (!once_) { \
-			func(); \
-			once_ = true; \
-		} \
-	} while (0)
+//////////////////
+// No threading //
+//////////////////
 
-#	define mythread_sigmask(how, set, oset) \
-		sigprocmask(how, set, oset)
+#define mythread_sigmask(how, set, oset) \
+	sigprocmask(how, set, oset)
+
+
+#define mythread_once(func) \
+do { \
+	static bool once_ = false; \
+	if (!once_) { \
+		func(); \
+		once_ = true; \
+	} \
+} while (0)
+
+#endif
 
 #endif

src/liblzma/Makefile.am

@@ -24,7 +24,13 @@ 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 5:4:0
+liblzma_la_LDFLAGS = -no-undefined -version-info 5:99:0
+
+if COND_SYMVERS
+EXTRA_DIST += liblzma.map
+liblzma_la_LDFLAGS += \
+	-Wl,--version-script=$(top_srcdir)/src/liblzma/liblzma.map
+endif
 
 include $(srcdir)/common/Makefile.inc
 include $(srcdir)/check/Makefile.inc

src/liblzma/api/lzma/base.h

@@ -332,11 +332,19 @@ 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 {
 	/**

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
  *
@@ -190,6 +313,50 @@ 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)
  *

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 4
-#define LZMA_VERSION_STABILITY LZMA_VERSION_STABILITY_STABLE
+#define LZMA_VERSION_MINOR 1
+#define LZMA_VERSION_PATCH 2
+#define LZMA_VERSION_STABILITY LZMA_VERSION_STABILITY_ALPHA
 
 #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

@@ -22,13 +22,13 @@
 //
 ///////////////////////////////////////////////////////////////////////////////
 
+#include "check.h"
+
 // Avoid bogus warnings in transform().
-#if (__GNUC__ == 4 && __GNUC_MINOR__ >= 2) || __GNUC__ > 4
+#if TUKLIB_GNUC_REQ(4, 2)
 #	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)))
 

src/liblzma/common/Makefile.inc

@@ -38,9 +38,15 @@ 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/outqueue.c \
+	common/outqueue.h \
+	common/stream_encoder_mt.c
+endif
 endif
 
 if COND_MAIN_DECODER

src/liblzma/common/common.c

@@ -156,10 +156,8 @@ 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;
 
@@ -265,7 +263,9 @@ 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
@@ -281,6 +281,11 @@ 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)

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
@@ -69,6 +78,13 @@
 	| LZMA_CONCATENATED )
 
 
+/// 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;

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_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,
@@ -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

@@ -16,8 +16,8 @@
 #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(

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, 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, 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 +1,155 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \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, 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, 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_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;
 
@@ -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));
@@ -262,11 +261,11 @@ 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, 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;
@@ -320,7 +319,7 @@ 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;

src/liblzma/common/stream_encoder.h

@@ -1,23 +0,0 @@
-///////////////////////////////////////////////////////////////////////////////
-//
-/// \file       stream_encoder.h
-/// \brief      Encodes .xz Streams
-//
-//  Author:     Lasse Collin
-//
-//  This file has been put into the public domain.
-//  You can do whatever you want with this file.
-//
-///////////////////////////////////////////////////////////////////////////////
-
-#ifndef LZMA_STREAM_ENCODER_H
-#define LZMA_STREAM_ENCODER_H
-
-#include "common.h"
-
-
-extern lzma_ret lzma_stream_encoder_init(
-		lzma_next_coder *next, lzma_allocator *allocator,
-		const lzma_filter *filters, lzma_check check);
-
-#endif

src/liblzma/liblzma.map

@@ -0,0 +1,105 @@
+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_5.1.2alpha {
+global:
+	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/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_encoder.c

@@ -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

@@ -38,4 +38,6 @@ 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

src/liblzma/lzma/lzma_decoder.c

@@ -193,15 +193,15 @@ struct lzma_coder_s {
 	/// Probability tree for the highest two bits of the match distance.
 	/// There is a separate probability tree for match lengths of
 	/// 2 (i.e. MATCH_LEN_MIN), 3, 4, and [5, 273].
-	probability pos_slot[LEN_TO_POS_STATES][POS_SLOTS];
+	probability dist_slot[DIST_STATES][DIST_SLOTS];
 
 	/// Probability trees for additional bits for match distance when the
 	/// distance is in the range [4, 127].
-	probability pos_special[FULL_DISTANCES - END_POS_MODEL_INDEX];
+	probability pos_special[FULL_DISTANCES - DIST_MODEL_END];
 
 	/// Probability tree for the lowest four bits of a match distance
 	/// that is equal to or greater than 128.
-	probability pos_align[ALIGN_TABLE_SIZE];
+	probability pos_align[ALIGN_SIZE];
 
 	/// Length of a normal match
 	lzma_length_decoder match_len_decoder;
@@ -245,8 +245,8 @@ struct lzma_coder_s {
 		SEQ_LITERAL_WRITE,
 		SEQ_IS_REP,
 		seq_len(SEQ_MATCH_LEN),
-		seq_6(SEQ_POS_SLOT),
-		SEQ_POS_MODEL,
+		seq_6(SEQ_DIST_SLOT),
+		SEQ_DIST_MODEL,
 		SEQ_DIRECT,
 		seq_4(SEQ_ALIGN),
 		SEQ_EOPM,
@@ -289,8 +289,12 @@ lzma_decode(lzma_coder *restrict coder, lzma_dict *restrict dictptr,
 	// Initialization //
 	////////////////////
 
-	if (!rc_read_init(&coder->rc, in, in_pos, in_size))
-		return LZMA_OK;
+	{
+		const lzma_ret ret = rc_read_init(
+				&coder->rc, in, in_pos, in_size);
+		if (ret != LZMA_STREAM_END)
+			return ret;
+	}
 
 	///////////////
 	// Variables //
@@ -502,28 +506,28 @@ lzma_decode(lzma_coder *restrict coder, lzma_dict *restrict dictptr,
 
 			// Prepare to decode the highest two bits of the
 			// match distance.
-			probs = coder->pos_slot[get_len_to_pos_state(len)];
+			probs = coder->dist_slot[get_dist_state(len)];
 			symbol = 1;
 
 #ifdef HAVE_SMALL
-	case SEQ_POS_SLOT:
+	case SEQ_DIST_SLOT:
 			do {
-				rc_bit(probs[symbol], , , SEQ_POS_SLOT);
-			} while (symbol < POS_SLOTS);
+				rc_bit(probs[symbol], , , SEQ_DIST_SLOT);
+			} while (symbol < DIST_SLOTS);
 #else
-			rc_bit_case(probs[symbol], , , SEQ_POS_SLOT0);
-			rc_bit_case(probs[symbol], , , SEQ_POS_SLOT1);
-			rc_bit_case(probs[symbol], , , SEQ_POS_SLOT2);
-			rc_bit_case(probs[symbol], , , SEQ_POS_SLOT3);
-			rc_bit_case(probs[symbol], , , SEQ_POS_SLOT4);
-			rc_bit_case(probs[symbol], , , SEQ_POS_SLOT5);
+			rc_bit_case(probs[symbol], , , SEQ_DIST_SLOT0);
+			rc_bit_case(probs[symbol], , , SEQ_DIST_SLOT1);
+			rc_bit_case(probs[symbol], , , SEQ_DIST_SLOT2);
+			rc_bit_case(probs[symbol], , , SEQ_DIST_SLOT3);
+			rc_bit_case(probs[symbol], , , SEQ_DIST_SLOT4);
+			rc_bit_case(probs[symbol], , , SEQ_DIST_SLOT5);
 #endif
 			// Get rid of the highest bit that was needed for
 			// indexing of the probability array.
-			symbol -= POS_SLOTS;
+			symbol -= DIST_SLOTS;
 			assert(symbol <= 63);
 
-			if (symbol < START_POS_MODEL_INDEX) {
+			if (symbol < DIST_MODEL_START) {
 				// Match distances [0, 3] have only two bits.
 				rep0 = symbol;
 			} else {
@@ -533,7 +537,7 @@ lzma_decode(lzma_coder *restrict coder, lzma_dict *restrict dictptr,
 				assert(limit >= 1 && limit <= 30);
 				rep0 = 2 + (symbol & 1);
 
-				if (symbol < END_POS_MODEL_INDEX) {
+				if (symbol < DIST_MODEL_END) {
 					// Prepare to decode the low bits for
 					// a distance of [4, 127].
 					assert(limit <= 5);
@@ -553,12 +557,12 @@ lzma_decode(lzma_coder *restrict coder, lzma_dict *restrict dictptr,
 							- symbol - 1;
 					symbol = 1;
 					offset = 0;
-	case SEQ_POS_MODEL:
+	case SEQ_DIST_MODEL:
 #ifdef HAVE_SMALL
 					do {
 						rc_bit(probs[symbol], ,
 							rep0 += 1 << offset,
-							SEQ_POS_MODEL);
+							SEQ_DIST_MODEL);
 					} while (++offset < limit);
 #else
 					switch (limit) {
@@ -566,25 +570,25 @@ lzma_decode(lzma_coder *restrict coder, lzma_dict *restrict dictptr,
 						assert(offset == 0);
 						rc_bit(probs[symbol], ,
 							rep0 += 1,
-							SEQ_POS_MODEL);
+							SEQ_DIST_MODEL);
 						++offset;
 						--limit;
 					case 4:
 						rc_bit(probs[symbol], ,
 							rep0 += 1 << offset,
-							SEQ_POS_MODEL);
+							SEQ_DIST_MODEL);
 						++offset;
 						--limit;
 					case 3:
 						rc_bit(probs[symbol], ,
 							rep0 += 1 << offset,
-							SEQ_POS_MODEL);
+							SEQ_DIST_MODEL);
 						++offset;
 						--limit;
 					case 2:
 						rc_bit(probs[symbol], ,
 							rep0 += 1 << offset,
-							SEQ_POS_MODEL);
+							SEQ_DIST_MODEL);
 						++offset;
 						--limit;
 					case 1:
@@ -596,7 +600,7 @@ lzma_decode(lzma_coder *restrict coder, lzma_dict *restrict dictptr,
 						// "symbol".
 						rc_bit_last(probs[symbol], ,
 							rep0 += 1 << offset,
-							SEQ_POS_MODEL);
+							SEQ_DIST_MODEL);
 					}
 #endif
 				} else {
@@ -637,7 +641,7 @@ lzma_decode(lzma_coder *restrict coder, lzma_dict *restrict dictptr,
 					rc_bit(coder->pos_align[symbol], ,
 							rep0 += 4, SEQ_ALIGN2);
 	case SEQ_ALIGN3:
-					// Like in SEQ_POS_MODEL, we don't
+					// Like in SEQ_DIST_MODEL, we don't
 					// need "symbol" for anything else
 					// than indexing the probability array.
 					rc_bit_last(coder->pos_align[symbol], ,
@@ -891,10 +895,10 @@ lzma_decoder_reset(lzma_coder *coder, const void *opt)
 		bit_reset(coder->is_rep2[i]);
 	}
 
-	for (uint32_t i = 0; i < LEN_TO_POS_STATES; ++i)
-		bittree_reset(coder->pos_slot[i], POS_SLOT_BITS);
+	for (uint32_t i = 0; i < DIST_STATES; ++i)
+		bittree_reset(coder->dist_slot[i], DIST_SLOT_BITS);
 
-	for (uint32_t i = 0; i < FULL_DISTANCES - END_POS_MODEL_INDEX; ++i)
+	for (uint32_t i = 0; i < FULL_DISTANCES - DIST_MODEL_END; ++i)
 		bit_reset(coder->pos_special[i]);
 
 	bittree_reset(coder->pos_align, ALIGN_BITS);

src/liblzma/lzma/lzma_encoder.c

@@ -148,28 +148,28 @@ match(lzma_coder *coder, const uint32_t pos_state,
 	length(&coder->rc, &coder->match_len_encoder, pos_state, len,
 			coder->fast_mode);
 
-	const uint32_t pos_slot = get_pos_slot(distance);
-	const uint32_t len_to_pos_state = get_len_to_pos_state(len);
-	rc_bittree(&coder->rc, coder->pos_slot[len_to_pos_state],
-			POS_SLOT_BITS, pos_slot);
+	const uint32_t dist_slot = get_dist_slot(distance);
+	const uint32_t dist_state = get_dist_state(len);
+	rc_bittree(&coder->rc, coder->dist_slot[dist_state],
+			DIST_SLOT_BITS, dist_slot);
 
-	if (pos_slot >= START_POS_MODEL_INDEX) {
-		const uint32_t footer_bits = (pos_slot >> 1) - 1;
-		const uint32_t base = (2 | (pos_slot & 1)) << footer_bits;
-		const uint32_t pos_reduced = distance - base;
+	if (dist_slot >= DIST_MODEL_START) {
+		const uint32_t footer_bits = (dist_slot >> 1) - 1;
+		const uint32_t base = (2 | (dist_slot & 1)) << footer_bits;
+		const uint32_t dist_reduced = distance - base;
 
-		if (pos_slot < END_POS_MODEL_INDEX) {
-			// Careful here: base - pos_slot - 1 can be -1, but
+		if (dist_slot < DIST_MODEL_END) {
+			// Careful here: base - dist_slot - 1 can be -1, but
 			// rc_bittree_reverse starts at probs[1], not probs[0].
 			rc_bittree_reverse(&coder->rc,
-				coder->pos_special + base - pos_slot - 1,
-				footer_bits, pos_reduced);
+				coder->dist_special + base - dist_slot - 1,
+				footer_bits, dist_reduced);
 		} else {
-			rc_direct(&coder->rc, pos_reduced >> ALIGN_BITS,
+			rc_direct(&coder->rc, dist_reduced >> ALIGN_BITS,
 					footer_bits - ALIGN_BITS);
 			rc_bittree_reverse(
-					&coder->rc, coder->pos_align,
-					ALIGN_BITS, pos_reduced & ALIGN_MASK);
+					&coder->rc, coder->dist_align,
+					ALIGN_BITS, dist_reduced & ALIGN_MASK);
 			++coder->align_price_count;
 		}
 	}
@@ -247,7 +247,7 @@ encode_symbol(lzma_coder *coder, lzma_mf *mf,
 		rc_bit(&coder->rc,
 			&coder->is_match[coder->state][pos_state], 1);
 
-		if (back < REP_DISTANCES) {
+		if (back < REPS) {
 			// It's a repeated match i.e. the same distance
 			// has been used earlier.
 			rc_bit(&coder->rc, &coder->is_rep[coder->state], 1);
@@ -255,7 +255,7 @@ encode_symbol(lzma_coder *coder, lzma_mf *mf,
 		} else {
 			// Normal match
 			rc_bit(&coder->rc, &coder->is_rep[coder->state], 0);
-			match(coder, pos_state, back - REP_DISTANCES, len);
+			match(coder, pos_state, back - REPS, len);
 		}
 	}
 
@@ -353,9 +353,9 @@ lzma_lzma_encode(lzma_coder *restrict coder, lzma_mf *restrict mf,
 
 		// Get optimal match (repeat position and length).
 		// Value ranges for pos:
-		//   - [0, REP_DISTANCES): repeated match
-		//   - [REP_DISTANCES, UINT32_MAX):
-		//     match at (pos - REP_DISTANCES)
+		//   - [0, REPS): repeated match
+		//   - [REPS, UINT32_MAX):
+		//     match at (pos - REPS)
 		//   - UINT32_MAX: not a match but a literal
 		// Value ranges for len:
 		//   - [MATCH_LEN_MIN, MATCH_LEN_MAX]
@@ -487,7 +487,7 @@ lzma_lzma_encoder_reset(lzma_coder *coder, const lzma_options_lzma *options)
 
 	// State
 	coder->state = STATE_LIT_LIT;
-	for (size_t i = 0; i < REP_DISTANCES; ++i)
+	for (size_t i = 0; i < REPS; ++i)
 		coder->reps[i] = 0;
 
 	literal_init(coder->literal, options->lc, options->lp);
@@ -505,14 +505,14 @@ lzma_lzma_encoder_reset(lzma_coder *coder, const lzma_options_lzma *options)
 		bit_reset(coder->is_rep2[i]);
 	}
 
-	for (size_t i = 0; i < FULL_DISTANCES - END_POS_MODEL_INDEX; ++i)
-		bit_reset(coder->pos_special[i]);
+	for (size_t i = 0; i < FULL_DISTANCES - DIST_MODEL_END; ++i)
+		bit_reset(coder->dist_special[i]);
 
 	// Bit tree encoders
-	for (size_t i = 0; i < LEN_TO_POS_STATES; ++i)
-		bittree_reset(coder->pos_slot[i], POS_SLOT_BITS);
+	for (size_t i = 0; i < DIST_STATES; ++i)
+		bittree_reset(coder->dist_slot[i], DIST_SLOT_BITS);
 
-	bittree_reset(coder->pos_align, ALIGN_BITS);
+	bittree_reset(coder->dist_align, ALIGN_BITS);
 
 	// Length encoders
 	length_encoder_reset(&coder->match_len_encoder,

src/liblzma/lzma/lzma_encoder_optimum_fast.c

@@ -46,7 +46,7 @@ lzma_lzma_optimum_fast(lzma_coder *restrict coder, lzma_mf *restrict mf,
 	uint32_t rep_len = 0;
 	uint32_t rep_index = 0;
 
-	for (uint32_t i = 0; i < REP_DISTANCES; ++i) {
+	for (uint32_t i = 0; i < REPS; ++i) {
 		// Pointer to the beginning of the match candidate
 		const uint8_t *const buf_back = buf - coder->reps[i] - 1;
 
@@ -79,8 +79,7 @@ lzma_lzma_optimum_fast(lzma_coder *restrict coder, lzma_mf *restrict mf,
 	// We didn't find a long enough repeated match. Encode it as a normal
 	// match if the match length is at least nice_len.
 	if (len_main >= nice_len) {
-		*back_res = coder->matches[matches_count - 1].dist
-				+ REP_DISTANCES;
+		*back_res = coder->matches[matches_count - 1].dist + REPS;
 		*len_res = len_main;
 		mf_skip(mf, len_main - 1);
 		return;
@@ -155,7 +154,7 @@ lzma_lzma_optimum_fast(lzma_coder *restrict coder, lzma_mf *restrict mf,
 
 	const uint32_t limit = len_main - 1;
 
-	for (uint32_t i = 0; i < REP_DISTANCES; ++i) {
+	for (uint32_t i = 0; i < REPS; ++i) {
 		const uint8_t *const buf_back = buf - coder->reps[i] - 1;
 
 		if (not_equal_16(buf, buf_back))
@@ -172,7 +171,7 @@ lzma_lzma_optimum_fast(lzma_coder *restrict coder, lzma_mf *restrict mf,
 		}
 	}
 
-	*back_res = back_main + REP_DISTANCES;
+	*back_res = back_main + REPS;
 	*len_res = len_main;
 	mf_skip(mf, len_main - 2);
 	return;

src/liblzma/lzma/lzma_encoder_optimum_normal.c

@@ -108,18 +108,18 @@ get_rep_price(const lzma_coder *const coder, const uint32_t rep_index,
 
 
 static inline uint32_t
-get_pos_len_price(const lzma_coder *const coder, const uint32_t pos,
+get_dist_len_price(const lzma_coder *const coder, const uint32_t dist,
 		const uint32_t len, const uint32_t pos_state)
 {
-	const uint32_t len_to_pos_state = get_len_to_pos_state(len);
+	const uint32_t dist_state = get_dist_state(len);
 	uint32_t price;
 
-	if (pos < FULL_DISTANCES) {
-		price = coder->distances_prices[len_to_pos_state][pos];
+	if (dist < FULL_DISTANCES) {
+		price = coder->dist_prices[dist_state][dist];
 	} else {
-		const uint32_t pos_slot = get_pos_slot_2(pos);
-		price = coder->pos_slot_prices[len_to_pos_state][pos_slot]
-				+ coder->align_prices[pos & ALIGN_MASK];
+		const uint32_t dist_slot = get_dist_slot_2(dist);
+		price = coder->dist_slot_prices[dist_state][dist_slot]
+				+ coder->align_prices[dist & ALIGN_MASK];
 	}
 
 	price += get_len_price(&coder->match_len_encoder, len, pos_state);
@@ -129,55 +129,53 @@ get_pos_len_price(const lzma_coder *const coder, const uint32_t pos,
 
 
 static void
-fill_distances_prices(lzma_coder *coder)
+fill_dist_prices(lzma_coder *coder)
 {
-	for (uint32_t len_to_pos_state = 0;
-			len_to_pos_state < LEN_TO_POS_STATES;
-			++len_to_pos_state) {
+	for (uint32_t dist_state = 0; dist_state < DIST_STATES; ++dist_state) {
 
-		uint32_t *const pos_slot_prices
-				= coder->pos_slot_prices[len_to_pos_state];
+		uint32_t *const dist_slot_prices
+				= coder->dist_slot_prices[dist_state];
 
-		// Price to encode the pos_slot.
-		for (uint32_t pos_slot = 0;
-				pos_slot < coder->dist_table_size; ++pos_slot)
-			pos_slot_prices[pos_slot] = rc_bittree_price(
-					coder->pos_slot[len_to_pos_state],
-					POS_SLOT_BITS, pos_slot);
+		// Price to encode the dist_slot.
+		for (uint32_t dist_slot = 0;
+				dist_slot < coder->dist_table_size; ++dist_slot)
+			dist_slot_prices[dist_slot] = rc_bittree_price(
+					coder->dist_slot[dist_state],
+					DIST_SLOT_BITS, dist_slot);
 
 		// For matches with distance >= FULL_DISTANCES, add the price
 		// of the direct bits part of the match distance. (Align bits
 		// are handled by fill_align_prices()).
-		for (uint32_t pos_slot = END_POS_MODEL_INDEX;
-				pos_slot < coder->dist_table_size; ++pos_slot)
-			pos_slot_prices[pos_slot] += rc_direct_price(
-					((pos_slot >> 1) - 1) - ALIGN_BITS);
+		for (uint32_t dist_slot = DIST_MODEL_END;
+				dist_slot < coder->dist_table_size;
+				++dist_slot)
+			dist_slot_prices[dist_slot] += rc_direct_price(
+					((dist_slot >> 1) - 1) - ALIGN_BITS);
 
 		// Distances in the range [0, 3] are fully encoded with
-		// pos_slot, so they are used for coder->distances_prices
+		// dist_slot, so they are used for coder->dist_prices
 		// as is.
-		for (uint32_t i = 0; i < START_POS_MODEL_INDEX; ++i)
-			coder->distances_prices[len_to_pos_state][i]
-					= pos_slot_prices[i];
+		for (uint32_t i = 0; i < DIST_MODEL_START; ++i)
+			coder->dist_prices[dist_state][i]
+					= dist_slot_prices[i];
 	}
 
-	// Distances in the range [4, 127] depend on pos_slot and pos_special.
-	// We do this in a loop separate from the above loop to avoid
-	// redundant calls to get_pos_slot().
-	for (uint32_t i = START_POS_MODEL_INDEX; i < FULL_DISTANCES; ++i) {
-		const uint32_t pos_slot = get_pos_slot(i);
-		const uint32_t footer_bits = ((pos_slot >> 1) - 1);
-		const uint32_t base = (2 | (pos_slot & 1)) << footer_bits;
+	// Distances in the range [4, 127] depend on dist_slot and
+	// dist_special. We do this in a loop separate from the above
+	// loop to avoid redundant calls to get_dist_slot().
+	for (uint32_t i = DIST_MODEL_START; i < FULL_DISTANCES; ++i) {
+		const uint32_t dist_slot = get_dist_slot(i);
+		const uint32_t footer_bits = ((dist_slot >> 1) - 1);
+		const uint32_t base = (2 | (dist_slot & 1)) << footer_bits;
 		const uint32_t price = rc_bittree_reverse_price(
-				coder->pos_special + base - pos_slot - 1,
+				coder->dist_special + base - dist_slot - 1,
 				footer_bits, i - base);
 
-		for (uint32_t len_to_pos_state = 0;
-				len_to_pos_state < LEN_TO_POS_STATES;
-				++len_to_pos_state)
-			coder->distances_prices[len_to_pos_state][i]
-					= price + coder->pos_slot_prices[
-						len_to_pos_state][pos_slot];
+		for (uint32_t dist_state = 0; dist_state < DIST_STATES;
+				++dist_state)
+			coder->dist_prices[dist_state][i]
+					= price + coder->dist_slot_prices[
+						dist_state][dist_slot];
 	}
 
 	coder->match_price_count = 0;
@@ -188,9 +186,9 @@ fill_distances_prices(lzma_coder *coder)
 static void
 fill_align_prices(lzma_coder *coder)
 {
-	for (uint32_t i = 0; i < ALIGN_TABLE_SIZE; ++i)
+	for (uint32_t i = 0; i < ALIGN_SIZE; ++i)
 		coder->align_prices[i] = rc_bittree_reverse_price(
-				coder->pos_align, ALIGN_BITS, i);
+				coder->dist_align, ALIGN_BITS, i);
 
 	coder->align_price_count = 0;
 	return;
@@ -296,10 +294,10 @@ helper1(lzma_coder *restrict coder, lzma_mf *restrict mf,
 
 	const uint8_t *const buf = mf_ptr(mf) - 1;
 
-	uint32_t rep_lens[REP_DISTANCES];
+	uint32_t rep_lens[REPS];
 	uint32_t rep_max_index = 0;
 
-	for (uint32_t i = 0; i < REP_DISTANCES; ++i) {
+	for (uint32_t i = 0; i < REPS; ++i) {
 		const uint8_t *const buf_back = buf - coder->reps[i] - 1;
 
 		if (not_equal_16(buf, buf_back)) {
@@ -326,8 +324,7 @@ helper1(lzma_coder *restrict coder, lzma_mf *restrict mf,
 
 
 	if (len_main >= nice_len) {
-		*back_res = coder->matches[matches_count - 1].dist
-				+ REP_DISTANCES;
+		*back_res = coder->matches[matches_count - 1].dist + REPS;
 		*len_res = len_main;
 		mf_skip(mf, len_main - 1);
 		return UINT32_MAX;
@@ -381,7 +378,7 @@ helper1(lzma_coder *restrict coder, lzma_mf *restrict mf,
 
 	coder->opts[1].pos_prev = 0;
 
-	for (uint32_t i = 0; i < REP_DISTANCES; ++i)
+	for (uint32_t i = 0; i < REPS; ++i)
 		coder->opts[0].backs[i] = coder->reps[i];
 
 	uint32_t len = len_end;
@@ -390,7 +387,7 @@ helper1(lzma_coder *restrict coder, lzma_mf *restrict mf,
 	} while (--len >= 2);
 
 
-	for (uint32_t i = 0; i < REP_DISTANCES; ++i) {
+	for (uint32_t i = 0; i < REPS; ++i) {
 		uint32_t rep_len = rep_lens[i];
 		if (rep_len < 2)
 			continue;
@@ -426,14 +423,13 @@ helper1(lzma_coder *restrict coder, lzma_mf *restrict mf,
 		for(; ; ++len) {
 			const uint32_t dist = coder->matches[i].dist;
 			const uint32_t cur_and_len_price = normal_match_price
-					+ get_pos_len_price(coder,
+					+ get_dist_len_price(coder,
 						dist, len, pos_state);
 
 			if (cur_and_len_price < coder->opts[len].price) {
 				coder->opts[len].price = cur_and_len_price;
 				coder->opts[len].pos_prev = 0;
-				coder->opts[len].back_prev
-						= dist + REP_DISTANCES;
+				coder->opts[len].back_prev = dist + REPS;
 				coder->opts[len].prev_1_is_literal = false;
 			}
 
@@ -463,7 +459,7 @@ helper2(lzma_coder *coder, uint32_t *reps, const uint8_t *buf,
 		if (coder->opts[cur].prev_2) {
 			state = coder->opts[coder->opts[cur].pos_prev_2].state;
 
-			if (coder->opts[cur].back_prev_2 < REP_DISTANCES)
+			if (coder->opts[cur].back_prev_2 < REPS)
 				update_long_rep(state);
 			else
 				update_match(state);
@@ -492,33 +488,33 @@ helper2(lzma_coder *coder, uint32_t *reps, const uint8_t *buf,
 			update_long_rep(state);
 		} else {
 			pos = coder->opts[cur].back_prev;
-			if (pos < REP_DISTANCES)
+			if (pos < REPS)
 				update_long_rep(state);
 			else
 				update_match(state);
 		}
 
-		if (pos < REP_DISTANCES) {
+		if (pos < REPS) {
 			reps[0] = coder->opts[pos_prev].backs[pos];
 
 			uint32_t i;
 			for (i = 1; i <= pos; ++i)
 				reps[i] = coder->opts[pos_prev].backs[i - 1];
 
-			for (; i < REP_DISTANCES; ++i)
+			for (; i < REPS; ++i)
 				reps[i] = coder->opts[pos_prev].backs[i];
 
 		} else {
-			reps[0] = pos - REP_DISTANCES;
+			reps[0] = pos - REPS;
 
-			for (uint32_t i = 1; i < REP_DISTANCES; ++i)
+			for (uint32_t i = 1; i < REPS; ++i)
 				reps[i] = coder->opts[pos_prev].backs[i - 1];
 		}
 	}
 
 	coder->opts[cur].state = state;
 
-	for (uint32_t i = 0; i < REP_DISTANCES; ++i)
+	for (uint32_t i = 0; i < REPS; ++i)
 		coder->opts[cur].backs[i] = reps[i];
 
 	const uint32_t cur_price = coder->opts[cur].price;
@@ -611,7 +607,7 @@ helper2(lzma_coder *coder, uint32_t *reps, const uint8_t *buf,
 
 	uint32_t start_len = 2; // speed optimization
 
-	for (uint32_t rep_index = 0; rep_index < REP_DISTANCES; ++rep_index) {
+	for (uint32_t rep_index = 0; rep_index < REPS; ++rep_index) {
 		const uint8_t *const buf_back = buf - reps[rep_index] - 1;
 		if (not_equal_16(buf, buf_back))
 			continue;
@@ -728,14 +724,14 @@ helper2(lzma_coder *coder, uint32_t *reps, const uint8_t *buf,
 		for (uint32_t len_test = start_len; ; ++len_test) {
 			const uint32_t cur_back = coder->matches[i].dist;
 			uint32_t cur_and_len_price = normal_match_price
-					+ get_pos_len_price(coder,
+					+ get_dist_len_price(coder,
 						cur_back, len_test, pos_state);
 
 			if (cur_and_len_price < coder->opts[cur + len_test].price) {
 				coder->opts[cur + len_test].price = cur_and_len_price;
 				coder->opts[cur + len_test].pos_prev = cur;
 				coder->opts[cur + len_test].back_prev
-						= cur_back + REP_DISTANCES;
+						= cur_back + REPS;
 				coder->opts[cur + len_test].prev_1_is_literal = false;
 			}
 
@@ -795,7 +791,7 @@ helper2(lzma_coder *coder, uint32_t *reps, const uint8_t *buf,
 						coder->opts[offset].prev_2 = true;
 						coder->opts[offset].pos_prev_2 = cur;
 						coder->opts[offset].back_prev_2
-								= cur_back + REP_DISTANCES;
+								= cur_back + REPS;
 					}
 					//}
 				}
@@ -831,9 +827,9 @@ lzma_lzma_optimum_normal(lzma_coder *restrict coder, lzma_mf *restrict mf,
 	// In liblzma they were moved into this single place.
 	if (mf->read_ahead == 0) {
 		if (coder->match_price_count >= (1 << 7))
-			fill_distances_prices(coder);
+			fill_dist_prices(coder);
 
-		if (coder->align_price_count >= ALIGN_TABLE_SIZE)
+		if (coder->align_price_count >= ALIGN_SIZE)
 			fill_align_prices(coder);
 	}
 
@@ -845,7 +841,7 @@ lzma_lzma_optimum_normal(lzma_coder *restrict coder, lzma_mf *restrict mf,
 	if (len_end == UINT32_MAX)
 		return;
 
-	uint32_t reps[REP_DISTANCES];
+	uint32_t reps[REPS];
 	memcpy(reps, coder->reps, sizeof(reps));
 
 	uint32_t cur;

src/liblzma/lzma/lzma_encoder_private.h

@@ -64,7 +64,7 @@ typedef struct {
 	uint32_t pos_prev;  // pos_next;
 	uint32_t back_prev;
 
-	uint32_t backs[REP_DISTANCES];
+	uint32_t backs[REPS];
 
 } lzma_optimal;
 
@@ -77,7 +77,7 @@ struct lzma_coder_s {
 	lzma_lzma_state state;
 
 	/// The four most recent match distances
-	uint32_t reps[REP_DISTANCES];
+	uint32_t reps[REPS];
 
 	/// Array of match candidates
 	lzma_match matches[MATCH_LEN_MAX + 1];
@@ -112,9 +112,9 @@ struct lzma_coder_s {
 	probability is_rep1[STATES];
 	probability is_rep2[STATES];
 	probability is_rep0_long[STATES][POS_STATES_MAX];
-	probability pos_slot[LEN_TO_POS_STATES][POS_SLOTS];
-	probability pos_special[FULL_DISTANCES - END_POS_MODEL_INDEX];
-	probability pos_align[ALIGN_TABLE_SIZE];
+	probability dist_slot[DIST_STATES][DIST_SLOTS];
+	probability dist_special[FULL_DISTANCES - DIST_MODEL_END];
+	probability dist_align[ALIGN_SIZE];
 
 	// These are the same as in lzma_decoder.c except that the encoders
 	// include also price tables.
@@ -122,12 +122,12 @@ struct lzma_coder_s {
 	lzma_length_encoder rep_len_encoder;
 
 	// Price tables
-	uint32_t pos_slot_prices[LEN_TO_POS_STATES][POS_SLOTS];
-	uint32_t distances_prices[LEN_TO_POS_STATES][FULL_DISTANCES];
+	uint32_t dist_slot_prices[DIST_STATES][DIST_SLOTS];
+	uint32_t dist_prices[DIST_STATES][FULL_DISTANCES];
 	uint32_t dist_table_size;
 	uint32_t match_price_count;
 
-	uint32_t align_prices[ALIGN_TABLE_SIZE];
+	uint32_t align_prices[ALIGN_SIZE];
 	uint32_t align_price_count;
 
 	// Optimal

src/liblzma/rangecoder/range_decoder.h

@@ -25,20 +25,26 @@ typedef struct {
 
 
 /// Reads the first five bytes to initialize the range decoder.
-static inline bool
+static inline lzma_ret
 rc_read_init(lzma_range_decoder *rc, const uint8_t *restrict in,
 		size_t *restrict in_pos, size_t in_size)
 {
 	while (rc->init_bytes_left > 0) {
 		if (*in_pos == in_size)
-			return false;
+			return LZMA_OK;
+
+		// The first byte is always 0x00. It could have been omitted
+		// in LZMA2 but it wasn't, so one byte is wasted in every
+		// LZMA2 chunk.
+		if (rc->init_bytes_left == 5 && in[*in_pos] != 0x00)
+			return LZMA_DATA_ERROR;
 
 		rc->code = (rc->code << 8) | in[*in_pos];
 		++*in_pos;
 		--rc->init_bytes_left;
 	}
 
-	return true;
+	return LZMA_STREAM_END;
 }
 
 

src/liblzma/validate_map.sh

@@ -0,0 +1,68 @@
+#!/bin/sh
+
+###############################################################################
+#
+# Check liblzma.map for certain types of errors
+#
+# Author: Lasse Collin
+#
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
+###############################################################################
+
+LC_ALL=C
+export LC_ALL
+
+STATUS=0
+
+cd "$(dirname "$0")"
+
+# Get the list of symbols that aren't defined in liblzma.map.
+SYMS=$(sed -n 's/^extern LZMA_API([^)]*) \([a-z0-9_]*\)(.*$/\1;/p' \
+		api/lzma/*.h \
+	| sort \
+	| grep -Fve "$(sed '/[{}:*]/d;/^$/d;s/^	//' liblzma.map)")
+
+# Check that there are no old alpha or beta versions listed.
+VER=$(cd ../.. && sh build-aux/version.sh)
+NAMES=
+case $VER in
+	*alpha | *beta)
+		NAMES=$(sed -n 's/^.*XZ_\([^ ]*\)\(alpha\|beta\) .*$/\1\2/p' \
+			liblzma.map | grep -Fv "$VER")
+		;;
+esac
+
+# Check for duplicate lines. It can catch missing dependencies.
+DUPS=$(sort liblzma.map | sed '/^$/d;/^global:$/d' | uniq -d)
+
+# Print error messages if needed.
+if test -n "$SYMS$NAMES$DUPS"; then
+	echo
+	echo 'validate_map.sh found problems from liblzma.map:'
+	echo
+
+	if test -n "$SYMS"; then
+		echo 'liblzma.map lacks the following symbols:'
+		echo "$SYMS"
+		echo
+	fi
+
+	if test -n "$NAMES"; then
+		echo 'Obsolete alpha or beta version names:'
+		echo "$NAMES"
+		echo
+	fi
+
+	if test -n "$DUPS"; then
+		echo 'Duplicate lines:'
+		echo "$DUPS"
+		echo
+	fi
+
+	STATUS=1
+fi
+
+# Exit status is 1 if problems were found, 0 otherwise.
+exit "$STATUS"

src/scripts/xzdiff.1

@@ -6,7 +6,7 @@
 .\"
 .\" License: GNU GPLv2+
 .\"
-.TH XZDIFF 1 "2010-09-27" "Tukaani" "XZ Utils"
+.TH XZDIFF 1 "2011-03-19" "Tukaani" "XZ Utils"
 .SH NAME
 xzcmp, xzdiff, lzcmp, lzdiff \- compare compressed files
 .SH SYNOPSIS
@@ -33,8 +33,9 @@ on files compressed with
 .BR xz (1),
 .BR lzma (1),
 .BR gzip (1),
+.BR bzip2 (1),
 or
-.BR bzip2 (1).
+.BR lzop (1).
 All options specified are passed directly to
 .BR cmp (1)
 or
@@ -66,6 +67,7 @@ are provided for backward compatibility with LZMA Utils.
 .BR xz (1),
 .BR gzip (1),
 .BR bzip2 (1),
+.BR lzop (1),
 .BR zdiff (1)
 .SH BUGS
 Messages from the

src/scripts/xzdiff.in

@@ -19,10 +19,10 @@
 
 # Instead of unsetting XZ_OPT, just make sure that xz will use file format
 # autodetection. This way memory usage limit and thread limit can be
-# specified via XZ_OPT. With gzip and bzip2 it's OK to just unset the
+# specified via XZ_OPT. With gzip, bzip2, and lzop it's OK to just unset the
 # environment variables.
 xz='@xz@ --format=auto'
-unset GZIP BZIP BZIP2
+unset GZIP BZIP BZIP2 LZOP
 
 case ${0##*/} in
   *cmp*) prog=xzcmp; cmp=${CMP:-cmp};;
@@ -77,17 +77,21 @@ if test $# -eq 1; then
       xz1=bzip2;;
     *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z)
       xz1=gzip;;
+    *[-.]lzo | *.tzo)
+      xz1=lzop;;
     *)
       echo >&2 "$0: $1: Unknown compressed file name suffix"
       exit 2;;
   esac
   case $1 in
-    *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma)
-      FILE=`expr "X$1" : 'X\(.*\)[-.][abglmxzZ2]*$'`;;
+    *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *[-.]lzo)
+      FILE=`expr "X$1" : 'X\(.*\)[-.][abglmoxzZ2]*$'`;;
     *.t[abglx]z)
       FILE=`expr "X$1" : 'X\(.*[-.]t\)[abglx]z$'`ar;;
     *.tbz2)
       FILE=`expr "X$1" : 'X\(.*[-.]t\)bz2$'`ar;;
+    *.tzo)
+      FILE=`expr "X$1" : 'X\(.*[-.]t\)zo$'`ar;;
   esac
   xz_status=$(
     exec 4>&1
@@ -97,15 +101,17 @@ elif test $# -eq 2; then
   case $1 in
     *[-.]bz2 | *.tbz | *.tbz2) xz1=bzip2;;
     *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) xz1=gzip;;
+    *[-.]lzo | *.tzo) xz1=lzop;;
   esac
   case $2 in
     *[-.]bz2 | *.tbz | *.tbz2) xz2=bzip2;;
     *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) xz2=gzip;;
+    *[-.]lzo | *.tzo) xz2=lzop;;
   esac
   case $1 in
-    *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *.t[abglx]z | *.tbz2 | -)
+    *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *.t[abglx]z | *.tbz2 | *[-.]lzo | *.tzo | -)
       case "$2" in
-        *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *.t[abglx]z | *.tbz2 | -)
+        *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *.t[abglx]z | *.tbz2 | *[-.]lzo | *.tzo | -)
           if test "$1$2" = --; then
             xz_status=$(
               exec 4>&1
@@ -127,7 +133,7 @@ elif test $# -eq 2; then
             esac
             (exit $cmp_status)
           else
-            F=`expr "/$2" : '.*/\(.*\)[-.][ablmtxz2]*$'` || F=$prog
+            F=`expr "/$2" : '.*/\(.*\)[-.][ablmotxz2]*$'` || F=$prog
             tmp=
             trap '
               test -n "$tmp" && rm -f "$tmp"
@@ -154,7 +160,7 @@ elif test $# -eq 2; then
     esac;;
   *)
     case "$2" in
-      *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *.t[abglx]z | *.tbz2 | -)
+      *[-.][zZ] | *_z | *[-.][gx]z | *[-.]bz2 | *[-.]lzma | *.t[abglx]z | *.tbz2 | *[-.]lzo | *.tzo | -)
         xz_status=$(
           exec 4>&1
           ($xz2 -cdfq -- "$2" 4>&-; echo $? >&4) 3>&- |

src/scripts/xzgrep.1

@@ -6,7 +6,7 @@
 .\"
 .\" License: GNU GPLv2+
 .\"
-.TH XZGREP 1 "2010-09-27" "Tukaani" "XZ Utils"
+.TH XZGREP 1 "2011-03-19" "Tukaani" "XZ Utils"
 .SH NAME
 xzgrep \- search compressed files for a regular expression
 .SH SYNOPSIS
@@ -40,8 +40,9 @@ which may be either uncompressed or compressed with
 .BR xz (1),
 .BR lzma (1),
 .BR gzip (1),
+.BR bzip2 (1),
 or
-.BR bzip2 (1).
+.BR lzop (1).
 All options specified are passed directly to
 .BR grep (1).
 .PP
@@ -51,9 +52,10 @@ is specified, then standard input is decompressed if necessary
 and fed to
 .BR grep (1).
 When reading from standard input,
-.BR gzip (1)
+.BR gzip (1),
+.BR bzip2 (1),
 and
-.BR bzip2 (1)
+.BR lzop (1)
 compressed files are not supported.
 .PP
 If
@@ -92,4 +94,5 @@ or
 .BR xz (1),
 .BR gzip (1),
 .BR bzip2 (1),
+.BR lzop (1),
 .BR zgrep (1)

src/scripts/xzgrep.in

@@ -22,10 +22,10 @@
 
 # Instead of unsetting XZ_OPT, just make sure that xz will use file format
 # autodetection. This way memory usage limit and thread limit can be
-# specified via XZ_OPT. With gzip and bzip2 it's OK to just unset the
+# specified via XZ_OPT. With gzip, bzip2, and lzop it's OK to just unset the
 # environment variables.
 xz='@xz@ --format=auto'
-unset GZIP BZIP BZIP2
+unset GZIP BZIP BZIP2 LZOP
 
 case ${0##*/} in
   *egrep*) prog=xzegrep; grep=${GREP:-egrep};;
@@ -153,6 +153,7 @@ for i; do
   case $i in
     *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) uncompress="gzip -cdfq";;
     *[-.]bz2 | *[-.]tbz | *.tbz2) uncompress="bzip2 -cdfq";;
+    *[-.]lzo | *[-.]tzo) uncompress="lzop -cdfq";;
     *) uncompress="$xz -cdfq";;
   esac
   # Fail if xz or grep (or sed) fails.

src/xz/args.c

@@ -54,6 +54,67 @@ parse_memlimit(const char *name, const char *name_percentage, char *str,
 }
 
 
+static void
+parse_block_list(char *str)
+{
+	// It must be non-empty and not begin with a comma.
+	if (str[0] == '\0' || str[0] == ',')
+		message_fatal(_("%s: Invalid argument to --block-list"), str);
+
+	// Count the number of comma-separated strings.
+	size_t count = 1;
+	for (size_t i = 0; str[i] != '\0'; ++i)
+		if (str[i] == ',')
+			++count;
+
+	// Prevent an unlikely integer overflow.
+	if (count > SIZE_MAX / sizeof(uint64_t) - 1)
+		message_fatal(_("%s: Too many arguments to --block-list"),
+				str);
+
+	// Allocate memory to hold all the sizes specified.
+	// If --block-list was specified already, its value is forgotten.
+	free(opt_block_list);
+	opt_block_list = xmalloc((count + 1) * sizeof(uint64_t));
+
+	for (size_t i = 0; i < count; ++i) {
+		// Locate the next comma and replace it with \0.
+		char *p = strchr(str, ',');
+		if (p != NULL)
+			*p = '\0';
+
+		if (str[0] == '\0') {
+			// There is no string, that is, a comma follows
+			// another comma. Use the previous value.
+			//
+			// NOTE: We checked earler that the first char
+			// of the whole list cannot be a comma.
+			assert(i > 0);
+			opt_block_list[i] = opt_block_list[i - 1];
+		} else {
+			opt_block_list[i] = str_to_uint64("block-list", str,
+					0, UINT64_MAX);
+
+			// Zero indicates no more new Blocks.
+			if (opt_block_list[i] == 0) {
+				if (i + 1 != count)
+					message_fatal(_("0 can only be used "
+							"as the last element "
+							"in --block-list"));
+
+				opt_block_list[i] = UINT64_MAX;
+			}
+		}
+
+		str = p + 1;
+	}
+
+	// Terminate the array.
+	opt_block_list[count] = 0;
+	return;
+}
+
+
 static void
 parse_real(args_info *args, int argc, char **argv)
 {
@@ -68,9 +129,12 @@ parse_real(args_info *args, int argc, char **argv)
 		OPT_LZMA1,
 		OPT_LZMA2,
 
+		OPT_SINGLE_STREAM,
 		OPT_NO_SPARSE,
 		OPT_FILES,
 		OPT_FILES0,
+		OPT_BLOCK_SIZE,
+		OPT_BLOCK_LIST,
 		OPT_MEM_COMPRESS,
 		OPT_MEM_DECOMPRESS,
 		OPT_NO_ADJUST,
@@ -94,6 +158,7 @@ parse_real(args_info *args, int argc, char **argv)
 		{ "force",        no_argument,       NULL,  'f' },
 		{ "stdout",       no_argument,       NULL,  'c' },
 		{ "to-stdout",    no_argument,       NULL,  'c' },
+		{ "single-stream", no_argument,      NULL,  OPT_SINGLE_STREAM },
 		{ "no-sparse",    no_argument,       NULL,  OPT_NO_SPARSE },
 		{ "suffix",       required_argument, NULL,  'S' },
 		// { "recursive",      no_argument,       NULL,  'r' }, // TODO
@@ -103,6 +168,8 @@ parse_real(args_info *args, int argc, char **argv)
 		// Basic compression settings
 		{ "format",       required_argument, NULL,  'F' },
 		{ "check",        required_argument, NULL,  'C' },
+		{ "block-size",   required_argument, NULL,  OPT_BLOCK_SIZE },
+		{ "block-list",  required_argument, NULL,  OPT_BLOCK_LIST },
 		{ "memlimit-compress",   required_argument, NULL, OPT_MEM_COMPRESS },
 		{ "memlimit-decompress", required_argument, NULL, OPT_MEM_DECOMPRESS },
 		{ "memlimit",     required_argument, NULL,  'M' },
@@ -175,8 +242,9 @@ parse_real(args_info *args, int argc, char **argv)
 			break;
 
 		case 'T':
-			hardware_threadlimit_set(str_to_uint64(
-					"threads", optarg, 0, UINT32_MAX));
+			// The max is from src/liblzma/common/common.h.
+			hardware_threads_set(str_to_uint64("threads",
+					optarg, 0, 16384));
 			break;
 
 		// --version
@@ -368,6 +436,20 @@ parse_real(args_info *args, int argc, char **argv)
 			break;
 		}
 
+		case OPT_BLOCK_SIZE:
+			opt_block_size = str_to_uint64("block-size", optarg,
+					0, LZMA_VLI_MAX);
+			break;
+
+		case OPT_BLOCK_LIST: {
+			parse_block_list(optarg);
+			break;
+		}
+
+		case OPT_SINGLE_STREAM:
+			opt_single_stream = true;
+			break;
+
 		case OPT_NO_SPARSE:
 			io_no_sparse();
 			break;
@@ -576,3 +658,13 @@ args_parse(args_info *args, int argc, char **argv)
 
 	return;
 }
+
+
+#ifndef NDEBUG
+extern void
+args_free(void)
+{
+	free(opt_block_list);
+	return;
+}
+#endif

src/xz/args.h

@@ -40,3 +40,4 @@ extern bool opt_robot;
 extern const char stdin_filename[];
 
 extern void args_parse(args_info *args, int argc, char **argv);
+extern void args_free(void);

src/xz/coder.c

@@ -24,6 +24,9 @@ enum coder_init_ret {
 enum operation_mode opt_mode = MODE_COMPRESS;
 enum format_type opt_format = FORMAT_AUTO;
 bool opt_auto_adjust = true;
+bool opt_single_stream = false;
+uint64_t opt_block_size = 0;
+uint64_t *opt_block_list = NULL;
 
 
 /// Stream used to communicate with liblzma
@@ -37,10 +40,10 @@ static io_buf in_buf;
 static io_buf out_buf;
 
 /// Number of filters. Zero indicates that we are using a preset.
-static size_t filters_count = 0;
+static uint32_t filters_count = 0;
 
 /// Number of the preset (0-9)
-static size_t preset_number = 6;
+static uint32_t preset_number = 6;
 
 /// If a preset is used (no custom filter chain) and preset_extreme is true,
 /// a significantly slower compression is used to achieve slightly better
@@ -53,6 +56,14 @@ static lzma_check check;
 /// This becomes false if the --check=CHECK option is used.
 static bool check_default = true;
 
+#ifdef HAVE_PTHREAD
+static lzma_mt mt_options = {
+	.flags = 0,
+	.timeout = 300,
+	.filters = filters,
+};
+#endif
+
 
 extern void
 coder_set_check(lzma_check new_check)
@@ -64,7 +75,7 @@ coder_set_check(lzma_check new_check)
 
 
 extern void
-coder_set_preset(size_t new_preset)
+coder_set_preset(uint32_t new_preset)
 {
 	preset_number = new_preset;
 
@@ -115,6 +126,15 @@ memlimit_too_small(uint64_t memory_usage)
 extern void
 coder_set_compression_settings(void)
 {
+	// The default check type is CRC64, but fallback to CRC32
+	// if CRC64 isn't supported by the copy of liblzma we are
+	// using. CRC32 is always supported.
+	if (check_default) {
+		check = LZMA_CHECK_CRC64;
+		if (!lzma_check_is_supported(check))
+			check = LZMA_CHECK_CRC32;
+	}
+
 	// Options for LZMA1 or LZMA2 in case we are using a preset.
 	static lzma_options_lzma opt_lzma;
 
@@ -168,15 +188,30 @@ coder_set_compression_settings(void)
 	// Print the selected filter chain.
 	message_filters_show(V_DEBUG, filters);
 
-	// If using --format=raw, we can be decoding. The memusage function
-	// also validates the filter chain and the options used for the
-	// filters.
+	// Get the memory usage. Note that if --format=raw was used,
+	// we can be decompressing.
 	const uint64_t memory_limit = hardware_memlimit_get(opt_mode);
 	uint64_t memory_usage;
-	if (opt_mode == MODE_COMPRESS)
-		memory_usage = lzma_raw_encoder_memusage(filters);
-	else
+	if (opt_mode == MODE_COMPRESS) {
+#ifdef HAVE_PTHREAD
+		if (opt_format == FORMAT_XZ && hardware_threads_get() > 1) {
+			mt_options.threads = hardware_threads_get();
+			mt_options.block_size = opt_block_size;
+			mt_options.check = check;
+			memory_usage = lzma_stream_encoder_mt_memusage(
+					&mt_options);
+			if (memory_usage != UINT64_MAX)
+				message(V_DEBUG, _("Using up to %" PRIu32
+						" threads."),
+						mt_options.threads);
+		} else
+#endif
+		{
+			memory_usage = lzma_raw_encoder_memusage(filters);
+		}
+	} else {
 		memory_usage = lzma_raw_decoder_memusage(filters);
+	}
 
 	if (memory_usage == UINT64_MAX)
 		message_fatal(_("Unsupported filter chain or filter options"));
@@ -192,90 +227,99 @@ coder_set_compression_settings(void)
 						round_up_to_mib(decmem), 0));
 	}
 
-	if (memory_usage > memory_limit) {
-		// If --no-auto-adjust was used or we didn't find LZMA1 or
-		// LZMA2 as the last filter, give an error immediately.
-		// --format=raw implies --no-auto-adjust.
-		if (!opt_auto_adjust || opt_format == FORMAT_RAW)
-			memlimit_too_small(memory_usage);
+	if (memory_usage <= memory_limit)
+		return;
 
-		assert(opt_mode == MODE_COMPRESS);
+	// If --no-auto-adjust was used or we didn't find LZMA1 or
+	// LZMA2 as the last filter, give an error immediately.
+	// --format=raw implies --no-auto-adjust.
+	if (!opt_auto_adjust || opt_format == FORMAT_RAW)
+		memlimit_too_small(memory_usage);
 
-		// Look for the last filter if it is LZMA2 or LZMA1, so
-		// we can make it use less RAM. With other filters we don't
-		// know what to do.
-		size_t i = 0;
-		while (filters[i].id != LZMA_FILTER_LZMA2
-				&& filters[i].id != LZMA_FILTER_LZMA1) {
-			if (filters[i].id == LZMA_VLI_UNKNOWN)
+	assert(opt_mode == MODE_COMPRESS);
+
+#ifdef HAVE_PTHREAD
+	if (opt_format == FORMAT_XZ && mt_options.threads > 1) {
+		// Try to reduce the number of threads before
+		// adjusting the compression settings down.
+		do {
+			// FIXME? The real single-threaded mode has
+			// lower memory usage, but it's not comparable
+			// because it doesn't write the size info
+			// into Block Headers.
+			if (--mt_options.threads == 0)
 				memlimit_too_small(memory_usage);
 
-			++i;
-		}
-
-		// Decrease the dictionary size until we meet the memory
-		// usage limit. First round down to full mebibytes.
-		lzma_options_lzma *opt = filters[i].options;
-		const uint32_t orig_dict_size = opt->dict_size;
-		opt->dict_size &= ~((UINT32_C(1) << 20) - 1);
-		while (true) {
-			// If it is below 1 MiB, auto-adjusting failed. We
-			// could be more sophisticated and scale it down even
-			// more, but let's see if many complain about this
-			// version.
-			//
-			// FIXME: Displays the scaled memory usage instead
-			// of the original.
-			if (opt->dict_size < (UINT32_C(1) << 20))
-				memlimit_too_small(memory_usage);
-
-			memory_usage = lzma_raw_encoder_memusage(filters);
+			memory_usage = lzma_stream_encoder_mt_memusage(
+					&mt_options);
 			if (memory_usage == UINT64_MAX)
 				message_bug();
 
-			// Accept it if it is low enough.
-			if (memory_usage <= memory_limit)
-				break;
+		} while (memory_usage > memory_limit);
 
-			// Otherwise 1 MiB down and try again. I hope this
-			// isn't too slow method for cases where the original
-			// dict_size is very big.
-			opt->dict_size -= UINT32_C(1) << 20;
-		}
+		message(V_WARNING, _("Adjusted the number of threads "
+			"from %s to %s to not exceed "
+			"the memory usage limit of %s MiB"),
+			uint64_to_str(hardware_threads_get(), 0),
+			uint64_to_str(mt_options.threads, 1),
+			uint64_to_str(round_up_to_mib(
+				memory_limit), 2));
+	}
+#endif
 
-		// Tell the user that we decreased the dictionary size.
-		message(V_WARNING, _("Adjusted LZMA%c dictionary size "
-				"from %s MiB to %s MiB to not exceed "
-				"the memory usage limit of %s MiB"),
-				filters[i].id == LZMA_FILTER_LZMA2
-					? '2' : '1',
-				uint64_to_str(orig_dict_size >> 20, 0),
-				uint64_to_str(opt->dict_size >> 20, 1),
-				uint64_to_str(round_up_to_mib(
-					memory_limit), 2));
+	if (memory_usage <= memory_limit)
+		return;
+
+	// Look for the last filter if it is LZMA2 or LZMA1, so we can make
+	// it use less RAM. With other filters we don't know what to do.
+	size_t i = 0;
+	while (filters[i].id != LZMA_FILTER_LZMA2
+			&& filters[i].id != LZMA_FILTER_LZMA1) {
+		if (filters[i].id == LZMA_VLI_UNKNOWN)
+			memlimit_too_small(memory_usage);
+
+		++i;
 	}
 
-/*
-	// Limit the number of worker threads so that memory usage
-	// limit isn't exceeded.
-	assert(memory_usage > 0);
-	size_t thread_limit = memory_limit / memory_usage;
-	if (thread_limit == 0)
-		thread_limit = 1;
+	// Decrease the dictionary size until we meet the memory
+	// usage limit. First round down to full mebibytes.
+	lzma_options_lzma *opt = filters[i].options;
+	const uint32_t orig_dict_size = opt->dict_size;
+	opt->dict_size &= ~((UINT32_C(1) << 20) - 1);
+	while (true) {
+		// If it is below 1 MiB, auto-adjusting failed. We could be
+		// more sophisticated and scale it down even more, but let's
+		// see if many complain about this version.
+		//
+		// FIXME: Displays the scaled memory usage instead
+		// of the original.
+		if (opt->dict_size < (UINT32_C(1) << 20))
+			memlimit_too_small(memory_usage);
 
-	if (opt_threads > thread_limit)
-		opt_threads = thread_limit;
-*/
+		memory_usage = lzma_raw_encoder_memusage(filters);
+		if (memory_usage == UINT64_MAX)
+			message_bug();
 
-	if (check_default) {
-		// The default check type is CRC64, but fallback to CRC32
-		// if CRC64 isn't supported by the copy of liblzma we are
-		// using. CRC32 is always supported.
-		check = LZMA_CHECK_CRC64;
-		if (!lzma_check_is_supported(check))
-			check = LZMA_CHECK_CRC32;
+		// Accept it if it is low enough.
+		if (memory_usage <= memory_limit)
+			break;
+
+		// Otherwise 1 MiB down and try again. I hope this
+		// isn't too slow method for cases where the original
+		// dict_size is very big.
+		opt->dict_size -= UINT32_C(1) << 20;
 	}
 
+	// Tell the user that we decreased the dictionary size.
+	message(V_WARNING, _("Adjusted LZMA%c dictionary size "
+			"from %s MiB to %s MiB to not exceed "
+			"the memory usage limit of %s MiB"),
+			filters[i].id == LZMA_FILTER_LZMA2
+				? '2' : '1',
+			uint64_to_str(orig_dict_size >> 20, 0),
+			uint64_to_str(opt->dict_size >> 20, 1),
+			uint64_to_str(round_up_to_mib(memory_limit), 2));
+
 	return;
 }
 
@@ -357,7 +401,14 @@ coder_init(file_pair *pair)
 			break;
 
 		case FORMAT_XZ:
-			ret = lzma_stream_encoder(&strm, filters, check);
+#ifdef HAVE_PTHREAD
+			if (hardware_threads_get() > 1)
+				ret = lzma_stream_encoder_mt(
+						&strm, &mt_options);
+			else
+#endif
+				ret = lzma_stream_encoder(
+						&strm, filters, check);
 			break;
 
 		case FORMAT_LZMA:
@@ -369,8 +420,9 @@ coder_init(file_pair *pair)
 			break;
 		}
 	} else {
-		const uint32_t flags = LZMA_TELL_UNSUPPORTED_CHECK
-				| LZMA_CONCATENATED;
+		uint32_t flags = LZMA_TELL_UNSUPPORTED_CHECK;
+		if (!opt_single_stream)
+			flags |= LZMA_CONCATENATED;
 
 		// We abuse FORMAT_AUTO to indicate unknown file format,
 		// for which we may consider passthru mode.
@@ -401,7 +453,7 @@ coder_init(file_pair *pair)
 
 		switch (init_format) {
 		case FORMAT_AUTO:
-			// Uknown file format. If --decompress --stdout
+			// Unknown file format. If --decompress --stdout
 			// --force have been given, then we copy the input
 			// as is to stdout. Checking for MODE_DECOMPRESS
 			// is needed, because we don't want to do use
@@ -462,8 +514,8 @@ coder_normal(file_pair *pair)
 	// Encoder needs to know when we have given all the input to it.
 	// The decoders need to know it too when we are using
 	// LZMA_CONCATENATED. We need to check for src_eof here, because
-	// the first input chunk has been already read, and that may
-	// have been the only chunk we will read.
+	// the first input chunk has been already read if decompressing,
+	// and that may have been the only chunk we will read.
 	lzma_action action = pair->src_eof ? LZMA_FINISH : LZMA_RUN;
 
 	lzma_ret ret;
@@ -471,6 +523,37 @@ coder_normal(file_pair *pair)
 	// Assume that something goes wrong.
 	bool success = false;
 
+	// block_remaining indicates how many input bytes to encode before
+	// finishing the current .xz Block. The Block size is set with
+	// --block-size=SIZE and --block-list. They have an effect only when
+	// compressing to the .xz format. If block_remaining == UINT64_MAX,
+	// only a single block is created.
+	uint64_t block_remaining = UINT64_MAX;
+
+	// Position in opt_block_list. Unused if --block-list wasn't used.
+	size_t list_pos = 0;
+
+	// Handle --block-size for single-threaded mode and the first step
+	// of --block-list.
+	if (opt_mode == MODE_COMPRESS && opt_format == FORMAT_XZ) {
+		// --block-size doesn't do anything here in threaded mode,
+		// because the threaded encoder will take care of splitting
+		// to fixed-sized Blocks.
+		if (hardware_threads_get() == 1 && opt_block_size > 0)
+			block_remaining = opt_block_size;
+
+		// If --block-list was used, start with the first size.
+		//
+		// FIXME: Currently this overrides --block-size but this isn't
+		// good. For threaded case, we want --block-size to specify
+		// how big Blocks the encoder needs to be prepared to create
+		// at maximum and --block-list will simultaneously cause new
+		// Blocks to be started at specified intervals. To keep things
+		// logical, the same should be done in single-threaded mode.
+		if (opt_block_list != NULL)
+			block_remaining = opt_block_list[list_pos];
+	}
+
 	strm.next_out = out_buf.u8;
 	strm.avail_out = IO_BUFFER_SIZE;
 
@@ -479,14 +562,23 @@ coder_normal(file_pair *pair)
 		// end of file yet.
 		if (strm.avail_in == 0 && !pair->src_eof) {
 			strm.next_in = in_buf.u8;
-			strm.avail_in = io_read(
-					pair, &in_buf, IO_BUFFER_SIZE);
+			strm.avail_in = io_read(pair, &in_buf,
+					my_min(block_remaining,
+						IO_BUFFER_SIZE));
 
 			if (strm.avail_in == SIZE_MAX)
 				break;
 
-			if (pair->src_eof)
+			if (pair->src_eof) {
 				action = LZMA_FINISH;
+
+			} else if (block_remaining != UINT64_MAX) {
+				// Start a new Block after every
+				// opt_block_size bytes of input.
+				block_remaining -= strm.avail_in;
+				if (block_remaining == 0)
+					action = LZMA_FULL_FLUSH;
+			}
 		}
 
 		// Let liblzma do the actual work.
@@ -502,7 +594,22 @@ coder_normal(file_pair *pair)
 			strm.avail_out = IO_BUFFER_SIZE;
 		}
 
-		if (ret != LZMA_OK) {
+		if (ret == LZMA_STREAM_END && action == LZMA_FULL_FLUSH) {
+			// Start a new Block.
+			action = LZMA_RUN;
+
+			if (opt_block_list == NULL) {
+				block_remaining = opt_block_size;
+			} else {
+				// FIXME: Make it work together with
+				// --block-size.
+				if (opt_block_list[list_pos + 1] != 0)
+					++list_pos;
+
+				block_remaining = opt_block_list[list_pos];
+			}
+
+		} else if (ret != LZMA_OK) {
 			// Determine if the return value indicates that we
 			// won't continue coding.
 			const bool stop = ret != LZMA_NO_CHECK
@@ -521,6 +628,12 @@ coder_normal(file_pair *pair)
 			}
 
 			if (ret == LZMA_STREAM_END) {
+				if (opt_single_stream) {
+					io_fix_src_pos(pair, strm.avail_in);
+					success = true;
+					break;
+				}
+
 				// Check that there is no trailing garbage.
 				// This is needed for LZMA_Alone and raw
 				// streams.
@@ -623,10 +736,15 @@ coder_run(const char *filename)
 	// Assume that something goes wrong.
 	bool success = false;
 
-	// Read the first chunk of input data. This is needed to detect
-	// the input file type (for now, only for decompression).
-	strm.next_in = in_buf.u8;
-	strm.avail_in = io_read(pair, &in_buf, IO_BUFFER_SIZE);
+	if (opt_mode == MODE_COMPRESS) {
+		strm.next_in = NULL;
+		strm.avail_in = 0;
+	} else {
+		// Read the first chunk of input data. This is needed
+		// to detect the input file type.
+		strm.next_in = in_buf.u8;
+		strm.avail_in = io_read(pair, &in_buf, IO_BUFFER_SIZE);
+	}
 
 	if (strm.avail_in != SIZE_MAX) {
 		// Initialize the coder. This will detect the file format
@@ -664,3 +782,13 @@ coder_run(const char *filename)
 
 	return;
 }
+
+
+#ifndef NDEBUG
+extern void
+coder_free(void)
+{
+	lzma_end(&strm);
+	return;
+}
+#endif

src/xz/coder.h

@@ -41,12 +41,22 @@ extern enum format_type opt_format;
 /// they exceed the memory usage limit.
 extern bool opt_auto_adjust;
 
+/// If true, stop after decoding the first stream.
+extern bool opt_single_stream;
+
+/// If non-zero, start a new .xz Block after every opt_block_size bytes
+/// of input. This has an effect only when compressing to the .xz format.
+extern uint64_t opt_block_size;
+
+/// This is non-NULL if --block-list was used. This contains the Block sizes
+/// as an array that is terminated with 0.
+extern uint64_t *opt_block_list;
 
 /// Set the integrity check type used when compressing
 extern void coder_set_check(lzma_check check);
 
 /// Set preset number
-extern void coder_set_preset(size_t new_preset);
+extern void coder_set_preset(uint32_t new_preset);
 
 /// Enable extreme mode
 extern void coder_set_extreme(void);
@@ -59,3 +69,8 @@ extern void coder_set_compression_settings(void);
 
 /// Compress or decompress the given file
 extern void coder_run(const char *filename);
+
+#ifndef NDEBUG
+/// Free the memory allocated for the coder and kill the worker threads.
+extern void coder_free(void);
+#endif

src/xz/file_io.c

@@ -68,8 +68,7 @@ io_init(void)
 #ifdef __DJGPP__
 	// Avoid doing useless things when statting files.
 	// This isn't important but doesn't hurt.
-	_djstat_flags = _STAT_INODE | _STAT_EXEC_EXT
-			| _STAT_EXEC_MAGIC | _STAT_DIRSIZE;
+	_djstat_flags = _STAT_EXEC_EXT | _STAT_EXEC_MAGIC | _STAT_DIRSIZE;
 #endif
 
 	return;
@@ -293,6 +292,10 @@ io_open_src_real(file_pair *pair)
 		pair->src_fd = STDIN_FILENO;
 #ifdef TUKLIB_DOSLIKE
 		setmode(STDIN_FILENO, O_BINARY);
+#endif
+#ifdef HAVE_POSIX_FADVISE
+		// It will fail if stdin is a pipe and that's fine.
+		(void)posix_fadvise(STDIN_FILENO, 0, 0, POSIX_FADV_SEQUENTIAL);
 #endif
 		return false;
 	}
@@ -448,8 +451,18 @@ io_open_src_real(file_pair *pair)
 
 	// Stat the source file. We need the result also when we copy
 	// the permissions, and when unlinking.
+	//
+	// NOTE: Use stat() instead of fstat() with DJGPP, because
+	// then we have a better chance to get st_ino value that can
+	// be used in io_open_dest_real() to prevent overwriting the
+	// source file.
+#ifdef __DJGPP__
+	if (stat(pair->src_name, &pair->src_st))
+		goto error_msg;
+#else
 	if (fstat(pair->src_fd, &pair->src_st))
 		goto error_msg;
+#endif
 
 	if (S_ISDIR(pair->src_st.st_mode)) {
 		message_warning(_("%s: Is a directory, skipping"),
@@ -497,6 +510,17 @@ io_open_src_real(file_pair *pair)
 	}
 #endif
 
+#ifdef HAVE_POSIX_FADVISE
+	const int fadvise_ret = posix_fadvise(
+			pair->src_fd, 0, 0, POSIX_FADV_SEQUENTIAL);
+
+	// It shouldn't fail, but if it does anyway, it doesn't matter.
+	// Check it with an assertion so that if something gets messed
+	// up in the future, it will get caught when debugging is enabled.
+	assert(fadvise_ret == 0);
+	(void)fadvise_ret;
+#endif
+
 	return false;
 
 error_msg:
@@ -584,6 +608,28 @@ io_open_dest_real(file_pair *pair)
 		if (pair->dest_name == NULL)
 			return true;
 
+#ifdef __DJGPP__
+		struct stat st;
+		if (stat(pair->dest_name, &st) == 0) {
+			// Check that it isn't a special file like "prn".
+			if (st.st_dev == -1) {
+				message_error("%s: Refusing to write to "
+						"a DOS special file",
+						pair->dest_name);
+				return true;
+			}
+
+			// Check that we aren't overwriting the source file.
+			if (st.st_dev == pair->src_st.st_dev
+					&& st.st_ino == pair->src_st.st_ino) {
+				message_error("%s: Output file is the same "
+						"as the input file",
+						pair->dest_name);
+				return true;
+			}
+		}
+#endif
+
 		// If --force was used, unlink the target file first.
 		if (opt_force && unlink(pair->dest_name) && errno != ENOENT) {
 			message_error(_("%s: Cannot remove: %s"),
@@ -606,17 +652,19 @@ io_open_dest_real(file_pair *pair)
 		}
 	}
 
-	// If this really fails... well, we have a safe fallback.
+#ifndef TUKLIB_DOSLIKE
+	// dest_st isn't used on DOS-like systems except as a dummy
+	// argument to io_unlink(), so don't fstat() on such systems.
 	if (fstat(pair->dest_fd, &pair->dest_st)) {
-#if defined(__VMS)
+		// If fstat() really fails, we have a safe fallback here.
+#	if defined(__VMS)
 		pair->dest_st.st_ino[0] = 0;
 		pair->dest_st.st_ino[1] = 0;
 		pair->dest_st.st_ino[2] = 0;
-#elif !defined(TUKLIB_DOSLIKE)
+#	else
 		pair->dest_st.st_dev = 0;
 		pair->dest_st.st_ino = 0;
-#endif
-#ifndef TUKLIB_DOSLIKE
+#	endif
 	} else if (try_sparse && opt_mode == MODE_DECOMPRESS) {
 		// When writing to standard output, we need to be extra
 		// careful:
@@ -674,8 +722,8 @@ io_open_dest_real(file_pair *pair)
 		}
 
 		pair->dest_try_sparse = true;
-#endif
 	}
+#endif
 
 	return false;
 }
@@ -792,6 +840,21 @@ io_close(file_pair *pair, bool success)
 }
 
 
+extern void
+io_fix_src_pos(file_pair *pair, size_t rewind_size)
+{
+	assert(rewind_size <= IO_BUFFER_SIZE);
+
+	if (rewind_size > 0) {
+		// This doesn't need to work on unseekable file descriptors,
+		// so just ignore possible errors.
+		(void)lseek(pair->src_fd, -(off_t)(rewind_size), SEEK_CUR);
+	}
+
+	return;
+}
+
+
 extern size_t
 io_read(file_pair *pair, io_buf *buf_union, size_t size)
 {

src/xz/file_io.h

@@ -102,6 +102,19 @@ extern void io_close(file_pair *pair, bool success);
 extern size_t io_read(file_pair *pair, io_buf *buf, size_t size);
 
 
+/// \brief      Fix the position in src_fd
+///
+/// This is used when --single-thream has been specified and decompression
+/// is successful. If the input file descriptor supports seeking, this
+/// function fixes the input position to point to the next byte after the
+/// decompressed stream.
+///
+/// \param      pair        File pair having the source file open for reading
+/// \param      rewind_size How many bytes of extra have been read i.e.
+///                         how much to seek backwards.
+extern void io_fix_src_pos(file_pair *pair, size_t rewind_size);
+
+
 /// \brief      Read from source file from given offset to a buffer
 ///
 /// This is remotely similar to standard pread(). This uses lseek() though,

src/xz/hardware.c

@@ -14,9 +14,9 @@
 #include "tuklib_cpucores.h"
 
 
-/// Maximum number of free *coder* threads. This can be set with
+/// Maximum number of worker threads. This can be set with
 /// the --threads=NUM command line option.
-static uint32_t threadlimit;
+static uint32_t threads_max = 1;
 
 /// Memory usage limit for compression
 static uint64_t memlimit_compress;
@@ -29,15 +29,16 @@ static uint64_t total_ram;
 
 
 extern void
-hardware_threadlimit_set(uint32_t new_threadlimit)
+hardware_threads_set(uint32_t n)
 {
-	if (new_threadlimit == 0) {
-		// The default is the number of available CPU cores.
-		threadlimit = tuklib_cpucores();
-		if (threadlimit == 0)
-			threadlimit = 1;
+	if (n == 0) {
+		// Automatic number of threads was requested.
+		// Use the number of available CPU cores.
+		threads_max = tuklib_cpucores();
+		if (threads_max == 0)
+			threads_max = 1;
 	} else {
-		threadlimit = new_threadlimit;
+		threads_max = n;
 	}
 
 	return;
@@ -45,9 +46,9 @@ hardware_threadlimit_set(uint32_t new_threadlimit)
 
 
 extern uint32_t
-hardware_threadlimit_get(void)
+hardware_threads_get(void)
 {
-	return threadlimit;
+	return threads_max;
 }
 
 
@@ -139,6 +140,5 @@ hardware_init(void)
 
 	// Set the defaults.
 	hardware_memlimit_set(0, true, true, false);
-	hardware_threadlimit_set(0);
 	return;
 }

src/xz/hardware.h

@@ -15,12 +15,11 @@
 extern void hardware_init(void);
 
 
-/// Set custom value for maximum number of coder threads.
-extern void hardware_threadlimit_set(uint32_t threadlimit);
+/// Set the maximum number of worker threads.
+extern void hardware_threads_set(uint32_t threadlimit);
 
-/// Get the maximum number of coder threads. Some additional helper threads
-/// are allowed on top of this).
-extern uint32_t hardware_threadlimit_get(void);
+/// Get the maximum number of worker threads.
+extern uint32_t hardware_threads_get(void);
 
 
 /// Set the memory usage limit. There are separate limits for compression

src/xz/list.c

@@ -29,9 +29,12 @@ typedef struct {
 	/// Uncompressed Size fields
 	bool all_have_sizes;
 
+	/// Oldest XZ Utils version that will decompress the file
+	uint32_t min_version;
+
 } xz_file_info;
 
-#define XZ_FILE_INFO_INIT { NULL, 0, 0, true }
+#define XZ_FILE_INFO_INIT { NULL, 0, 0, true, 50000002 }
 
 
 /// Information about a .xz Block
@@ -104,8 +107,32 @@ static struct {
 	uint64_t stream_padding;
 	uint64_t memusage_max;
 	uint32_t checks;
+	uint32_t min_version;
 	bool all_have_sizes;
-} totals = { 0, 0, 0, 0, 0, 0, 0, 0, true };
+} totals = { 0, 0, 0, 0, 0, 0, 0, 0, 0, true };
+
+
+/// Convert XZ Utils version number to a string.
+static const char *
+xz_ver_to_str(uint32_t ver)
+{
+	static char buf[32];
+
+	unsigned int major = ver / 10000000U;
+	ver -= major * 10000000U;
+
+	unsigned int minor = ver / 10000U;
+	ver -= minor * 10000U;
+
+	unsigned int patch = ver / 10U;
+	ver -= patch * 10U;
+
+	const char *stability = ver == 0 ? "alpha" : ver == 1 ? "beta" : "";
+
+	snprintf(buf, sizeof(buf), "%u.%u.%u%s",
+			major, minor, patch, stability);
+	return buf;
+}
 
 
 /// \brief      Parse the Index(es) from the given .xz file
@@ -452,6 +479,21 @@ parse_block_header(file_pair *pair, const lzma_index_iter *iter,
 	if (xfi->memusage_max < bhi->memusage)
 		xfi->memusage_max = bhi->memusage;
 
+	// Determine the minimum XZ Utils version that supports this Block.
+	//
+	// Currently the only thing that 5.0.0 doesn't support is empty
+	// LZMA2 Block. This decoder bug was fixed in 5.0.2.
+	{
+		size_t i = 0;
+		while (filters[i + 1].id != LZMA_VLI_UNKNOWN)
+			++i;
+
+		if (filters[i].id == LZMA_FILTER_LZMA2
+				&& iter->block.uncompressed_size == 0
+				&& xfi->min_version < 50000022U)
+			xfi->min_version = 50000022U;
+	}
+
 	// Convert the filter chain to human readable form.
 	message_filters_to_str(bhi->filter_chain, filters, false);
 
@@ -830,6 +872,8 @@ print_info_adv(xz_file_info *xfi, file_pair *pair)
 				round_up_to_mib(xfi->memusage_max), 0));
 		printf(_("  Sizes in headers:   %s\n"),
 				xfi->all_have_sizes ? _("Yes") : _("No"));
+		printf(_("  Minimum XZ Utils version: %s\n"),
+				xz_ver_to_str(xfi->min_version));
 	}
 
 	return false;
@@ -912,9 +956,10 @@ print_info_robot(xz_file_info *xfi, file_pair *pair)
 	}
 
 	if (message_verbosity_get() >= V_DEBUG)
-		printf("summary\t%" PRIu64 "\t%s\n",
+		printf("summary\t%" PRIu64 "\t%s\t%" PRIu32 "\n",
 				xfi->memusage_max,
-				xfi->all_have_sizes ? "yes" : "no");
+				xfi->all_have_sizes ? "yes" : "no",
+				xfi->min_version);
 
 	return false;
 }
@@ -935,6 +980,9 @@ update_totals(const xz_file_info *xfi)
 	if (totals.memusage_max < xfi->memusage_max)
 		totals.memusage_max = xfi->memusage_max;
 
+	if (totals.min_version < xfi->min_version)
+		totals.min_version = xfi->min_version;
+
 	totals.all_have_sizes &= xfi->all_have_sizes;
 
 	return;
@@ -999,6 +1047,8 @@ print_totals_adv(void)
 				round_up_to_mib(totals.memusage_max), 0));
 		printf(_("  Sizes in headers:   %s\n"),
 				totals.all_have_sizes ? _("Yes") : _("No"));
+		printf(_("  Minimum XZ Utils version: %s\n"),
+				xz_ver_to_str(totals.min_version));
 	}
 
 	return;
@@ -1024,9 +1074,10 @@ print_totals_robot(void)
 			totals.files);
 
 	if (message_verbosity_get() >= V_DEBUG)
-		printf("\t%" PRIu64 "\t%s",
+		printf("\t%" PRIu64 "\t%s\t%" PRIu32,
 				totals.memusage_max,
-				totals.all_have_sizes ? "yes" : "no");
+				totals.all_have_sizes ? "yes" : "no",
+				totals.min_version);
 
 	putchar('\n');
 

src/xz/main.c

@@ -275,6 +275,11 @@ main(int argc, char **argv)
 		list_totals();
 	}
 
+#ifndef NDEBUG
+	coder_free();
+	args_free();
+#endif
+
 	// If we have got a signal, raise it to kill the program instead
 	// of calling tuklib_exit().
 	signals_exit();

src/xz/message.c

@@ -1122,7 +1122,10 @@ message_help(bool long_help)
 "  -f, --force         force overwrite of output file and (de)compress links\n"
 "  -c, --stdout        write to standard output and don't delete input files"));
 
-	if (long_help)
+	if (long_help) {
+		puts(_(
+"      --single-stream decompress only the first stream, and silently\n"
+"                      ignore possible remaining input data"));
 		puts(_(
 "      --no-sparse     do not create sparse files when decompressing\n"
 "  -S, --suffix=.SUF   use the suffix `.SUF' on compressed files\n"
@@ -1130,6 +1133,7 @@ message_help(bool long_help)
 "                      omitted, filenames are read from the standard input;\n"
 "                      filenames must be terminated with the newline character\n"
 "      --files0[=FILE] like --files but use the null character as terminator"));
+	}
 
 	if (long_help) {
 		puts(_("\n Basic file format and compression options:\n"));
@@ -1149,6 +1153,16 @@ message_help(bool long_help)
 "                      does not affect decompressor memory requirements"));
 
 	if (long_help) {
+		// FIXME? Mention something about threading?
+		puts(_(
+"      --block-size=SIZE\n"
+"                      when compressing to the .xz format, start a new block\n"
+"                      after every SIZE bytes of input; 0=disabled (default)"));
+		// FIXME
+		puts(_(
+"      --block-list=SIZES\n"
+"                      when compressing to the .xz format, start a new block\n"
+"                      after the given intervals of uncompressed data"));
 		puts(_( // xgettext:no-c-format
 "      --memlimit-compress=LIMIT\n"
 "      --memlimit-decompress=LIMIT\n"

src/xz/private.h

@@ -12,6 +12,8 @@
 
 #include "sysdefs.h"
 #include "mythread.h"
+
+#define LZMA_UNSTABLE
 #include "lzma.h"
 
 #include <sys/types.h>

src/xz/suffix.c

@@ -12,6 +12,10 @@
 
 #include "private.h"
 
+#ifdef __DJGPP__
+#	include <fcntl.h>
+#endif
+
 // For case-insensitive filename suffix on case-insensitive systems
 #if defined(TUKLIB_DOSLIKE) || defined(__VMS)
 #	define strcmp strcasecmp
@@ -45,6 +49,31 @@ has_dir_sep(const char *str)
 }
 
 
+#ifdef __DJGPP__
+/// \brief      Test for special suffix used for 8.3 short filenames (SFN)
+///
+/// \return     If str matches *.?- or *.??-, true is returned. Otherwise
+///             false is returned.
+static bool
+has_sfn_suffix(const char *str, size_t len)
+{
+	if (len >= 4 && str[len - 1] == '-' && str[len - 2] != '.'
+			&& !is_dir_sep(str[len - 2])) {
+		// *.?-
+		if (str[len - 3] == '.')
+			return !is_dir_sep(str[len - 4]);
+
+		// *.??-
+		if (len >= 5 && !is_dir_sep(str[len - 3])
+				&& str[len - 4] == '.')
+			return !is_dir_sep(str[len - 5]);
+	}
+
+	return false;
+}
+#endif
+
+
 /// \brief      Checks if src_name has given compressed_suffix
 ///
 /// \param      suffix      Filename suffix to look for
@@ -87,6 +116,9 @@ uncompressed_name(const char *src_name, const size_t src_len)
 		{ ".xz",    "" },
 		{ ".txz",   ".tar" }, // .txz abbreviation for .txt.gz is rare.
 		{ ".lzma",  "" },
+#ifdef __DJGPP__
+		{ ".lzm",   "" },
+#endif
 		{ ".tlz",   ".tar" },
 		// { ".gz",    "" },
 		// { ".tgz",   ".tar" },
@@ -112,6 +144,17 @@ uncompressed_name(const char *src_name, const size_t src_len)
 				break;
 			}
 		}
+
+#ifdef __DJGPP__
+		// Support also *.?- -> *.? and *.??- -> *.?? on DOS.
+		// This is done also when long filenames are available
+		// to keep it easy to decompress files created when
+		// long filename support wasn't available.
+		if (new_len == 0 && has_sfn_suffix(src_name, src_len)) {
+			new_suffix = "";
+			new_len = src_len - 1;
+		}
+#endif
 	}
 
 	if (new_len == 0 && custom_suffix != NULL)
@@ -134,21 +177,35 @@ uncompressed_name(const char *src_name, const size_t src_len)
 }
 
 
+/// This message is needed in multiple places in compressed_name(),
+/// so the message has been put into its own function.
+static void
+msg_suffix(const char *src_name, const char *suffix)
+{
+	message_warning(_("%s: File already has `%s' suffix, skipping"),
+			src_name, suffix);
+	return;
+}
+
+
 /// \brief      Appends suffix to src_name
 ///
 /// In contrast to uncompressed_name(), we check only suffixes that are valid
 /// for the specified file format.
 static char *
-compressed_name(const char *src_name, const size_t src_len)
+compressed_name(const char *src_name, size_t src_len)
 {
 	// The order of these must match the order in args.h.
-	static const char *const all_suffixes[][3] = {
+	static const char *const all_suffixes[][4] = {
 		{
 			".xz",
 			".txz",
 			NULL
 		}, {
 			".lzma",
+#ifdef __DJGPP__
+			".lzm",
+#endif
 			".tlz",
 			NULL
 /*
@@ -170,20 +227,27 @@ compressed_name(const char *src_name, const size_t src_len)
 	const size_t format = opt_format - 1;
 	const char *const *suffixes = all_suffixes[format];
 
+	// Look for known filename suffixes and refuse to compress them.
 	for (size_t i = 0; suffixes[i] != NULL; ++i) {
 		if (test_suffix(suffixes[i], src_name, src_len) != 0) {
-			message_warning(_("%s: File already has `%s' "
-					"suffix, skipping"), src_name,
-					suffixes[i]);
+			msg_suffix(src_name, suffixes[i]);
 			return NULL;
 		}
 	}
 
+#ifdef __DJGPP__
+	// Recognize also the special suffix that is used when long
+	// filename (LFN) support isn't available. This suffix is
+	// recognized on LFN systems too.
+	if (opt_format == FORMAT_XZ && has_sfn_suffix(src_name, src_len)) {
+		msg_suffix(src_name, "-");
+		return NULL;
+	}
+#endif
+
 	if (custom_suffix != NULL) {
 		if (test_suffix(custom_suffix, src_name, src_len) != 0) {
-			message_warning(_("%s: File already has `%s' "
-					"suffix, skipping"), src_name,
-					custom_suffix);
+			msg_suffix(src_name, custom_suffix);
 			return NULL;
 		}
 	}
@@ -199,7 +263,101 @@ compressed_name(const char *src_name, const size_t src_len)
 
 	const char *suffix = custom_suffix != NULL
 			? custom_suffix : suffixes[0];
-	const size_t suffix_len = strlen(suffix);
+	size_t suffix_len = strlen(suffix);
+
+#ifdef __DJGPP__
+	if (!_use_lfn(src_name)) {
+		// Long filename (LFN) support isn't available and we are
+		// limited to 8.3 short filenames (SFN).
+		//
+		// Look for suffix separator from the filename, and make sure
+		// that it is in the filename, not in a directory name.
+		const char *sufsep = strrchr(src_name, '.');
+		if (sufsep == NULL || sufsep[1] == '\0'
+				|| has_dir_sep(sufsep)) {
+			// src_name has no filename extension.
+			//
+			// Examples:
+			// xz foo         -> foo.xz
+			// xz -F lzma foo -> foo.lzm
+			// xz -S x foo    -> foox
+			// xz -S x foo.   -> foo.x
+			// xz -S x.y foo  -> foox.y
+			// xz -S .x foo   -> foo.x
+			// xz -S .x foo.  -> foo.x
+			//
+			// Avoid double dots:
+			if (sufsep != NULL && sufsep[1] == '\0'
+					&& suffix[0] == '.')
+				--src_len;
+
+		} else if (custom_suffix == NULL
+				&& strcasecmp(sufsep, ".tar") == 0) {
+			// ".tar" is handled specially.
+			//
+			// Examples:
+			// xz foo.tar          -> foo.txz
+			// xz -F lzma foo.tar  -> foo.tlz
+			static const char *const tar_suffixes[] = {
+				".txz",
+				".tlz",
+				// ".tgz",
+			};
+			suffix = tar_suffixes[format];
+			suffix_len = 4;
+			src_len -= 4;
+
+		} else {
+			if (custom_suffix == NULL && opt_format == FORMAT_XZ) {
+				// Instead of the .xz suffix, use a single
+				// character at the end of the filename
+				// extension. This is to minimize name
+				// conflicts when compressing multiple files
+				// with the same basename. E.g. foo.txt and
+				// foo.exe become foo.tx- and foo.ex-. Dash
+				// is rare as the last character of the
+				// filename extension, so it seems to be
+				// quite safe choice and it stands out better
+				// in directory listings than e.g. x. For
+				// comparison, gzip uses z.
+				suffix = "-";
+				suffix_len = 1;
+			}
+
+			if (suffix[0] == '.') {
+				// The first character of the suffix is a dot.
+				// Throw away the original filename extension
+				// and replace it with the new suffix.
+				//
+				// Examples:
+				// xz -F lzma foo.txt  -> foo.lzm
+				// xz -S .x  foo.txt   -> foo.x
+				src_len = sufsep - src_name;
+
+			} else {
+				// The first character of the suffix is not
+				// a dot. Preserve the first 0-2 characters
+				// of the original filename extension.
+				//
+				// Examples:
+				// xz foo.txt         -> foo.tx-
+				// xz -S x  foo.c     -> foo.cx
+				// xz -S ab foo.c     -> foo.cab
+				// xz -S ab foo.txt   -> foo.tab
+				// xz -S abc foo.txt  -> foo.abc
+				//
+				// Truncate the suffix to three chars:
+				if (suffix_len > 3)
+					suffix_len = 3;
+
+				// If needed, overwrite 1-3 characters.
+				if (strlen(sufsep) > 4 - suffix_len)
+					src_len = sufsep - src_name
+							+ 4 - suffix_len;
+			}
+		}
+	}
+#endif
 
 	char *dest_name = xmalloc(src_len + suffix_len + 1);
 

src/xz/xz.1

@@ -5,7 +5,7 @@
 .\" This file has been put into the public domain.
 .\" You can do whatever you want with this file.
 .\"
-.TH XZ 1 "2012-05-27" "Tukaani" "XZ Utils"
+.TH XZ 1 "2012-07-03" "Tukaani" "XZ Utils"
 .
 .SH NAME
 xz, unxz, xzcat, lzma, unlzma, lzcat \- Compress or decompress .xz and .lzma files
@@ -434,6 +434,29 @@ standard output instead of a file.
 This implies
 .BR \-\-keep .
 .TP
+.B \-\-single\-stream
+Decompress only the first
+.B .xz
+stream, and
+silently ignore possible remaining input data following the stream.
+Normally such trailing garbage makes
+.B xz
+display an error.
+.IP ""
+.B xz
+never decompresses more than one stream from
+.B .lzma
+files or raw streams, but this option still makes
+.B xz
+ignore the possible trailing data after the
+.B .lzma
+file or raw stream.
+.IP ""
+This option has no effect if the operation mode is not
+.B \-\-decompress
+or
+.BR \-\-test .
+.TP
 .B \-\-no\-sparse
 Disable creation of sparse files.
 By default, if decompressing into a regular file,
@@ -777,6 +800,34 @@ These are provided only for backwards compatibility
 with LZMA Utils.
 Avoid using these options.
 .TP
+.BI \-\-block\-size= size
+When compressing to the
+.B .xz
+format, split the input data into blocks of
+.I size
+bytes.
+The blocks are compressed independently from each other.
+.\" FIXME: Explain how to these can be used for random access and threading.
+.TP
+.BI \-\-block\-list= sizes
+When compressing to the
+.B .xz
+format, start a new block after
+the given intervals of uncompressed data.
+.IP ""
+The uncompressed
+.I sizes
+of the blocks are specified as a comma-separated list.
+Omitting a size (two or more consecutive commas) is a shorthand
+to use the size of the previous block.
+A special value of
+.B 0
+may be used as the last value to indicate that
+the rest of the file should be encoded as a single block.
+.IP ""
+.B "Currently this option is badly broken if used together with"
+.B "\-\-block\-size or with multithreading."
+.TP
 .BI \-\-memlimit\-compress= limit
 Set a memory usage limit for compression.
 If this option is specified multiple times,
@@ -875,24 +926,30 @@ Automatic adjusting is always disabled when creating raw streams
 .TP
 \fB\-T\fR \fIthreads\fR, \fB\-\-threads=\fIthreads
 Specify the number of worker threads to use.
+Setting
+.I threads
+to a special value
+.B 0
+makes
+.B xz
+use as many threads as there are CPU cores on the system.
 The actual number of threads can be less than
 .I threads
+if the input file is not big enough
+for threading with the given settings or
 if using more threads would exceed the memory usage limit.
 .IP ""
-.B "Multithreaded compression and decompression are not"
-.B "implemented yet, so this option has no effect for now."
+Currently the only threading method is to split the input into
+blocks and compress them independently from each other.
+The default block size depends on the compression level and
+can be overriden with the
+.BI \-\-block\-size= size
+option.
 .IP ""
-.B "As of writing (2010-09-27), it hasn't been decided"
-.B "if threads will be used by default on multicore systems"
-.B "once support for threading has been implemented."
-.B "Comments are welcome."
-The complicating factor is that using many threads
-will increase the memory usage dramatically.
-Note that if multithreading will be the default,
-it will probably be done so that single-threaded and
-multithreaded modes produce the same output,
-so compression ratio won't be significantly affected
-if threading will be enabled by default.
+.B "It is possible that the details of this option change before"
+.B "the next stable XZ Utils release."
+.B "This may include the meaning of the special value 0."
+.\" FIXME
 .
 .SS "Custom compressor filter chains"
 A custom filter chain allows specifying
@@ -1851,6 +1908,14 @@ or
 .B no
 indicating if all block headers have both compressed size and
 uncompressed size stored in them
+.PP
+.I Since
+.B xz
+.I 5.1.2alpha:
+.IP 4. 4
+Minimum
+.B xz
+version required to decompress the file
 .RE
 .PD
 .PP
@@ -1901,6 +1966,14 @@ or
 .B no
 indicating if all block headers have both compressed size and
 uncompressed size stored in them
+.PP
+.I Since
+.B xz
+.I 5.1.2alpha:
+.IP 12. 4
+Minimum
+.B xz
+version required to decompress the file
 .RE
 .PD
 .PP
@@ -2161,7 +2234,9 @@ If there is data left after the first
 .B .lzma
 stream,
 .B xz
-considers the file to be corrupt.
+considers the file to be corrupt unless
+.B \-\-single\-stream
+was used.
 This may break obscure scripts which have
 assumed that trailing garbage is ignored.
 .