Magic-Mirror/gecko-dev
1
0
Fork 0
mirror of https://github.com/mozilla/gecko-dev.git synced 2024-11-05 08:35:26 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity
0cbf4497da
gecko-dev/xpcom/io/nsStdFileStream.h

959 lines
34 KiB
C
Raw Normal View History

Relicensing Round 1, Take 2. Most C-like NPL files -> NPL/GPL/LGPL. Bug 98089.
2001-09-28 20:14:13 +00:00
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
First Checked In.
1998-12-18 22:38:28 +00:00
*
Relicensing Round 1, Take 2. Most C-like NPL files -> NPL/GPL/LGPL. Bug 98089.
2001-09-28 20:14:13 +00:00
* The contents of this file are subject to the Netscape Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
First Checked In.
1998-12-18 22:38:28 +00:00
*
Relicensing Round 1, Take 2. Most C-like NPL files -> NPL/GPL/LGPL. Bug 98089.
2001-09-28 20:14:13 +00:00
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
First Checked In.
1998-12-18 22:38:28 +00:00
*
updated xPL license boilerplate to v1.1, a=chofmann@netscape.com,r=endico@mozilla.org
1999-11-06 03:43:54 +00:00
* The Original Code is mozilla.org code.
*
Relicensing Round 1, Take 2. Most C-like NPL files -> NPL/GPL/LGPL. Bug 98089.
2001-09-28 20:14:13 +00:00
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
updated xPL license boilerplate to v1.1, a=chofmann@netscape.com,r=endico@mozilla.org
1999-11-06 03:43:54 +00:00
*
Relicensing Round 1, Take 2. Most C-like NPL files -> NPL/GPL/LGPL. Bug 98089.
2001-09-28 20:14:13 +00:00
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the NPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
First Checked In.
1998-12-18 22:38:28 +00:00
#error "Do not use this file. The unix compilers do not support standard C++. Use nsFileStream"
// First checked in on 98/11/20 by John R. McMullen in the wrong directory.
// Checked in again 98/12/04.
// Polished version 98/12/08.
//========================================================================================
//
// Classes defined:
//
// single-byte char:
//
// nsInputFileStream, nsOutputFileStream, nsIOFileStream
//
// wide char:
//
// nsWideInputFileStream, nsWideOutputFileStream, nsWideIOFileStream
//
// This suite provide the following services:
//
// 1. Encapsulates all platform-specific file details, so that file i/o
// can be done correctly without any platform #ifdefs
//
// 2. Uses NSPR file services (NOT ansi file I/O), in order to get best
// native performance. This performance difference is especially large on
// macintosh.
//
// 3. Allows all the power of the ansi stream syntax: these streams
// ARE derived classes of ostream, istream, and iostream. ALL METHODS OF
// istream, ostream, AND iostream ARE AVAILABLE!
//
// Basic example:
//
// nsFilePath myPath("/Development/iotest.txt");
//
// nsOutputFileStream testStream(myPath);
// testStream << "Hello World" << endl;
//
// 4. Requires streams to be constructed using typesafe nsFilePath specifier
// (not the notorious and bug prone const char*), namely nsFilePath. See
// nsFileSpec.h for more details.
//
// 5. Fixes a bug that have been there for a long time, and
// is inevitable if you use NSPR alone:
//
// The problem on platforms (Macintosh) in which a path does not fully
// specify a file, because two volumes can have the same name.
//
// Not yet provided:
//
// Endian-awareness for reading and writing crossplatform binary files. At this
// time there seems to be no demand for this.
//
//========================================================================================
#ifndef _FILESTREAM_H_
#define _FILESTREAM_H_
#include "nscore.h"
#ifdef XP_MAC
#include "pprio.h" // To get PR_ImportFile
#else
#include "prio.h"
#endif
#include "nsFileSpec.h"
//========================================================================================
// Compiler-specific macros, as needed
//========================================================================================
#56767 r/a=cls,leaf Remove XP_PC - use XP_WIN or XP_OS2 explicitly
2000-11-28 23:27:38 +00:00
#if !defined(NS_USING_NAMESPACE) && (defined(__MWERKS__) || defined(XP_WIN))
First Checked In.
1998-12-18 22:38:28 +00:00
#define NS_USING_NAMESPACE
#endif
#56767 r/a=cls,leaf Remove XP_PC - use XP_WIN or XP_OS2 explicitly
2000-11-28 23:27:38 +00:00
#if !defined(NS_USING_STL) && (defined(__MWERKS__) || defined(XP_WIN))
First Checked In.
1998-12-18 22:38:28 +00:00
#define NS_USING_STL
#endif
#ifdef NS_USING_NAMESPACE
#define NS_NAMESPACE_PROTOTYPE
#define NS_NAMESPACE namespace
#define NS_NAMESPACE_END
#else
#define NS_NAMESPACE_PROTOTYPE static
#define NS_NAMESPACE struct
#define NS_NAMESPACE_END ;
#endif // NS_USING_NAMESPACE
#ifdef NS_USING_STL
// Macintosh and Windows use this section.
//
// Here's where the party is. When Unix wants to join in (by supporting
// a build system with STL headers), what fun we'll have! Meanwhile, I've used
// macros to make this build on all our platforms. Unix doesn't have support for
// STL, and therefore we could not use the template forms of these classes on Unix.
// (it's a long story). Therefore, Unix supports no stream char types except 1-byte
// characters, and therefore nobody else does now either, until Unix catches up.
#define DEFINING_FILE_STREAM // templateers define this when this file is included.
#define IOS_BASE ios_base
#include <istream>
using std::ios_base;
using std::basic_streambuf;
using std::codecvt_base;
using std::codecvt;
using std::streamsize;
using std::locale;
using std::basic_istream;
using std::basic_ostream;
using std::basic_iostream;
using std::char_traits;
#define TEMPLATE_DEF template<class charT, class traits>
#define FILE_BUFFER_TYPE nsFileBufferT<charT, traits>
#define INPUT_FILE_STREAM nsInputFileStreamT<charT, traits>
#define OUTPUT_FILE_STREAM nsOutputFileStreamT<charT, traits>
#define IO_FILE_STREAM nsIOFileStreamT<charT, traits>
#define BASIC_STREAMBUF basic_streambuf<charT, traits>
#define BASIC_ISTREAM basic_istream<charT, traits>
#define BASIC_OSTREAM basic_ostream<charT, traits>
#define BASIC_IOSTREAM basic_iostream<charT, traits>
#define INT_TYPE FILE_BUFFER_TYPE::int_type
#define POS_TYPE FILE_BUFFER_TYPE::pos_type
#define OFF_TYPE FILE_BUFFER_TYPE::off_type
#define SEEK_DIR IOS_BASE::seekdir
#define EOF_VALUE traits::eof()
#else
// Unix uses this section until it supports STL. This means no locales, no traits,
// no wide chars, etc. Also, the stream classes are the original ARM-style ones,
// and are not templatized.
#define IOS_BASE ios
#include <istream.h>
#define TEMPLATE_DEF
#define FILE_BUFFER_TYPE nsFileBufferT
#define INPUT_FILE_STREAM nsInputFileStreamT
#define OUTPUT_FILE_STREAM nsOutputFileStreamT
#define IO_FILE_STREAM nsIOFileStreamT
#define BASIC_STREAMBUF streambuf
#define BASIC_ISTREAM istream
#define BASIC_OSTREAM ostream
#define BASIC_IOSTREAM iostream
#define INT_TYPE int
#define POS_TYPE long
#define OFF_TYPE long
#define SEEK_DIR ios::seek_dir
#define int_type int
#define pos_type long
#define off_type long
#define char_type char
#define EOF_VALUE EOF
#endif // NS_USING_STL
#ifdef __MWERKS__
#ifdef MSIPL_WCHART
#define NS_USING_WIDE_CHAR
#endif
#ifdef MSIPL_EXPLICIT_FUNC_TEMPLATE_ARG
#define NS_EXPLICIT_FUNC_TEMPLATE_ARG
#endif
#define NS_READ_LOCK(mut) READ_LOCK(mut)
#define NS_WRITE_LOCK(mut) WRITE_LOCK(mut)
#else
// Fix me, if necessary, for thread-safety.
#define NS_READ_LOCK(mut)
#define NS_WRITE_LOCK(mut)
#endif // __MWERKS__
//=========================== End Compiler-specific macros ===============================
//========================================================================================
NS_NAMESPACE nsFileStreamHelpers
// Prototypes for common (non-template) implementations in the .cpp file which do not
// need the template args (charT, traits).
//========================================================================================
{
NS_NAMESPACE_PROTOTYPE NS_BASE PRFileDesc* open(
const nsFilePath& inFile,
IOS_BASE::openmode mode,
PRIntn accessMode);
} NS_NAMESPACE_END // nsFileStreamHelpers
//========================================================================================
// Template declarations
//========================================================================================
//========================================================================================
TEMPLATE_DEF
class nsFileBufferT
//========================================================================================
: public BASIC_STREAMBUF
{
#ifdef NS_USING_STL
typedef codecvt_base::result result;
public:
typedef charT char_type;
typedef typename traits::pos_type pos_type;
typedef typename traits::off_type off_type;
typedef typename traits::int_type int_type;
typedef traits traits_type;
typedef typename traits::state_type state_type;
typedef codecvt<charT, char, state_type> ofacet_type;
typedef codecvt<char, charT, state_type> ifacet_type;
#endif
public:
nsFileBufferT();
nsFileBufferT(PRFileDesc* pfile_arg);
virtual ~nsFileBufferT();
bool is_open() const;
FILE_BUFFER_TYPE* open(
const nsFilePath& inFile,
IOS_BASE::openmode mode,
PRIntn accessMode);
FILE_BUFFER_TYPE* close();
protected:
virtual int_type overflow(int_type c=EOF_VALUE);
virtual int_type pbackfail(int_type c=EOF_VALUE);
virtual int_type underflow();
virtual pos_type seekoff(
off_type off, SEEK_DIR way,
IOS_BASE::openmode which=IOS_BASE::in|IOS_BASE::out);
virtual pos_type seekpos(pos_type sp,
IOS_BASE::openmode which=IOS_BASE::in|IOS_BASE::out);
virtual BASIC_STREAMBUF* setbuf(char_type* s, streamsize n);
virtual int sync();
virtual int_type uflow();
#ifdef NS_USING_STL
virtual void imbue(const locale& loc);
#endif
virtual streamsize showmanyc();
virtual streamsize xsgetn(char_type* s, streamsize n);
virtual streamsize xsputn(const char_type* s, streamsize n);
private:
PRFileDesc* mFileDesc;
IOS_BASE::openmode mode_;
}; // class nsFileBufferT
//========================================================================================
TEMPLATE_DEF
class nsInputFileStreamT
//========================================================================================
: public BASIC_ISTREAM
{
#ifdef NS_USING_STL
public:
typedef charT char_type;
typedef typename traits::pos_type pos_type;
typedef typename traits::off_type off_type;
typedef typename traits::int_type int_type;
typedef traits traits_type;
#endif
public:
nsInputFileStreamT();
explicit nsInputFileStreamT(
const nsFilePath& inFile,
IOS_BASE::openmode mode=IOS_BASE::in,
PRIntn accessMode = 0x00400);
virtual ~nsInputFileStreamT();
FILE_BUFFER_TYPE* rdbuf() const;
inline bool is_open();
inline void open(
const nsFilePath& inFile,
IOS_BASE::openmode mode=IOS_BASE::in,
PRIntn accessMode = 0x00400);
inline void close();
private:
FILE_BUFFER_TYPE mBuffer;
}; // class nsInputFileStreamT
//========================================================================================
TEMPLATE_DEF
class nsOutputFileStreamT
//========================================================================================
: public BASIC_OSTREAM
{
#ifdef NS_USING_STL
public:
typedef charT char_type;
typedef typename traits::pos_type pos_type;
typedef typename traits::off_type off_type;
typedef typename traits::int_type int_type;
typedef traits traits_type;
#endif
public:
nsOutputFileStreamT();
explicit nsOutputFileStreamT(
const nsFilePath& inFile,
IOS_BASE::openmode mode = IOS_BASE::out|IOS_BASE::trunc,
PRIntn accessMode = 0x00200);
virtual ~nsOutputFileStreamT();
FILE_BUFFER_TYPE* rdbuf() const;
inline bool is_open();
inline void open(
const nsFilePath& inFile,
IOS_BASE::openmode mode = IOS_BASE::out|IOS_BASE::trunc,
PRIntn accessMode = 0x00200);
inline void close();
private:
FILE_BUFFER_TYPE mBuffer;
}; // class nsOutputFileStreamT
//========================================================================================
// Implementation of nsFileBufferT
//========================================================================================
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline FILE_BUFFER_TYPE::nsFileBufferT()
: BASIC_STREAMBUF(), mFileDesc(NULL)
//----------------------------------------------------------------------------------------
{
}
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline FILE_BUFFER_TYPE::nsFileBufferT(PRFileDesc* pfarg)
: BASIC_STREAMBUF(), mFileDesc(pfarg)
//----------------------------------------------------------------------------------------
{
}
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline FILE_BUFFER_TYPE* FILE_BUFFER_TYPE::close()
// Must precede the destructor because both are inline.
//----------------------------------------------------------------------------------------
{
if (mFileDesc==PR_STDIN || mFileDesc==PR_STDOUT || mFileDesc==PR_STDERR)
return this;
NS_WRITE_LOCK(_mutex);
return (mFileDesc && PR_Close(mFileDesc) == PR_SUCCESS) ? mFileDesc = 0, this : 0;
}
#if defined(DEFINING_FILE_STREAM)
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
FILE_BUFFER_TYPE::~nsFileBufferT()
//----------------------------------------------------------------------------------------
{
close();
}
#endif // #if defined(DEFINING_FILE_STREAM)
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline bool
FILE_BUFFER_TYPE::is_open() const
//----------------------------------------------------------------------------------------
{
NS_READ_LOCK(_mutex);
return bool(mFileDesc); // in case it is typedefed to int
}
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline FILE_BUFFER_TYPE* FILE_BUFFER_TYPE::open(
const nsFilePath& inFile,
IOS_BASE::openmode mode,
PRIntn accessMode)
//----------------------------------------------------------------------------------------
{
if (mFileDesc)
return 0;
NS_WRITE_LOCK(_mutex);
mFileDesc = nsFileStreamHelpers::open(inFile, mode, accessMode);
if (!mFileDesc)
return 0;
mode_ = mode;
return this;
} // FILE_BUFFER_TYPE::open
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline int FILE_BUFFER_TYPE:: sync()
//----------------------------------------------------------------------------------------
{
return (mFileDesc ? (int)PR_Sync(mFileDesc) : 0);
}
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline BASIC_STREAMBUF* FILE_BUFFER_TYPE::setbuf(char_type*, streamsize)
//----------------------------------------------------------------------------------------
{
return (!mFileDesc) ? 0 : this;
}
#if defined(DEFINING_FILE_STREAM)
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
INT_TYPE FILE_BUFFER_TYPE::overflow(int_type c)
//----------------------------------------------------------------------------------------
{
#ifndef NS_USING_STL
char ch = c;
PRInt32 bytesWrit1 = PR_Write(mFileDesc, &ch, sizeof(ch));
return bytesWrit1 < sizeof(ch) ? EOF_VALUE : c;
#else
#ifdef NS_EXPLICIT_FUNC_TEMPLATE_ARG
const ofacet_type& ft=use_facet<ofacet_type>(getloc());
#56767 r/a=cls,leaf Remove XP_PC - use XP_WIN or XP_OS2 explicitly
2000-11-28 23:27:38 +00:00
#elif defined(XP_WIN) || defined(XP_OS2)
First Checked In.
1998-12-18 22:38:28 +00:00
const ofacet_type& ft=use_facet(getloc(), (ofacet_type*)0, false);
#else
const ofacet_type& ft=use_facet(getloc(), (ofacet_type*)0);
#endif
char_type ch = traits_type::to_char_type(c);
if (!mFileDesc)
return EOF_VALUE;
if (traits_type::eq_int_type(c, EOF_VALUE))
return traits_type::not_eof(c);
if (ft.always_noconv())
{
PRInt32 bytesWrit1 = PR_Write(mFileDesc, &ch, sizeof(ch));
return bytesWrit1 < sizeof(ch) ? EOF_VALUE : c;
}
{ // <- sic!
state_type fst;
const char_type* end;
char buf[4];
char* ebuf;
result conv;
if ((conv=ft.out(fst, &ch, &ch+1, end, buf, buf+3, ebuf))==
codecvt_base::noconv)
{
PRInt32 bytesWrit2 = PR_Write(mFileDesc, &ch, sizeof(ch));
return bytesWrit2 < sizeof(ch) ? EOF_VALUE : c;
}
if ((conv==codecvt_base::partial)||(conv==codecvt_base::error))
return EOF_VALUE;
*ebuf=0;
PRInt32 bytesWrit3 = strlen(buf);
return PR_Write(mFileDesc, buf, bytesWrit3) < bytesWrit3 ? EOF_VALUE : c;
}
#endif
}
#endif // #if defined(DEFINING_FILE_STREAM)
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline INT_TYPE FILE_BUFFER_TYPE::underflow()
//----------------------------------------------------------------------------------------
{
if (!mFileDesc)
return EOF_VALUE;
char_type s;
PRInt32 request = 1;
if (1 != PR_Read(mFileDesc, &s, request))
return EOF_VALUE;
PR_Seek(mFileDesc, -1, PR_SEEK_CUR);
return (int_type)s;
}
#if defined(DEFINING_FILE_STREAM)
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
streamsize FILE_BUFFER_TYPE::xsputn(const char_type* s, streamsize n)
//----------------------------------------------------------------------------------------
{
#ifndef NS_USING_STL
PRInt32 bytesWrit1 = PR_Write(mFileDesc, s, sizeof(char) * size_t(n));
return bytesWrit1 < 0 ? 0 : (streamsize)bytesWrit1;
#else
#ifdef NS_EXPLICIT_FUNC_TEMPLATE_ARG
const ofacet_type& ft=use_facet<ofacet_type>(loc);
#56767 r/a=cls,leaf Remove XP_PC - use XP_WIN or XP_OS2 explicitly
2000-11-28 23:27:38 +00:00
#elif defined(XP_WIN) || defined(XP_OS2)
First Checked In.
1998-12-18 22:38:28 +00:00
const ofacet_type& ft=use_facet(getloc(), (ofacet_type*)0, false);
#else
const ofacet_type& ft=use_facet(getloc(), (ofacet_type*)0);
#endif
if (!mFileDesc || !n)
return 0;
if (ft.always_noconv())
{
PRInt32 bytesWrit1 = PR_Write(mFileDesc, s, sizeof(char) * size_t(n));
return bytesWrit1 < 0 ? 0 : (streamsize)bytesWrit1;
}
{ // <- sic!
state_type fst;
const char_type* end;
char buf[8];
char* ebuf;
result conv;
#ifdef NS_EXPLICIT_FUNC_TEMPLATE_ARG
if ((conv=use_facet<ofacet_type>(getloc()).
#56767 r/a=cls,leaf Remove XP_PC - use XP_WIN or XP_OS2 explicitly
2000-11-28 23:27:38 +00:00
#elif defined(XP_WIN) || defined(XP_OS2)
First Checked In.
1998-12-18 22:38:28 +00:00
if ((conv=use_facet(getloc(), (ofacet_type*)0, false).
#else
if ((conv=use_facet(getloc(), (ofacet_type*)0).
#endif
out(fst, s, s+n, end, buf, buf+7, ebuf))==codecvt_base::noconv)
return (streamsize)PR_Write(mFileDesc, s, sizeof(char) * size_t(n));
if ((conv==codecvt_base::partial) ||(conv==codecvt_base::error))
return 0;
*ebuf=0;
PRInt32 bytesWrit2 = strlen(buf);
bytesWrit2 = PR_Write(mFileDesc, buf, bytesWrit2);
return bytesWrit2 < 0 ? 0 : streamsize(bytesWrit2 / sizeof(char_type));
}
#endif
} // FILE_BUFFER_TYPE::xsputn
#endif // #if defined(DEFINING_FILE_STREAM)
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline INT_TYPE FILE_BUFFER_TYPE::pbackfail(int_type c)
//----------------------------------------------------------------------------------------
{
if (!mFileDesc)
return EOF_VALUE;
if (PR_Seek(mFileDesc, -1, PR_SEEK_CUR) < 0)
return EOF_VALUE;
#ifdef NS_USING_STL
return (traits::eq_int_type(c, EOF_VALUE)) ? traits::not_eof(c) : c;
#else
return c;
#endif
}
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline INT_TYPE FILE_BUFFER_TYPE::uflow()
//----------------------------------------------------------------------------------------
{
if (!mFileDesc)
return EOF_VALUE;
char_type s;
if (1 != PR_Read(mFileDesc, &s, 1)) // attempt to read 1 byte, confirm 1 byte
return EOF_VALUE;
return (int_type)s;
}
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline streamsize FILE_BUFFER_TYPE::xsgetn(char_type* s, streamsize n)
//----------------------------------------------------------------------------------------
{
return mFileDesc ? (streamsize)PR_Read(mFileDesc, s, sizeof(char) * size_t(n)) : 0;
}
#ifdef NS_USING_STL
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline void FILE_BUFFER_TYPE::imbue(const locale& loc_arg)
//----------------------------------------------------------------------------------------
{
#ifdef XP_MAC
loc = loc_arg;
#endif
}
#endif
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline streamsize FILE_BUFFER_TYPE::showmanyc()
//----------------------------------------------------------------------------------------
{
return (streamsize)PR_Available(mFileDesc);
}
#if defined(DEFINING_FILE_STREAM)
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
POS_TYPE FILE_BUFFER_TYPE::seekoff(
OFF_TYPE off,
SEEK_DIR way,
IOS_BASE::openmode /* which */)
//----------------------------------------------------------------------------------------
{
if (!mFileDesc ||
#ifdef NS_USING_STL
((way&IOS_BASE::beg) && off<0) || ((way&IOS_BASE::end) && off > 0)
#else
((way == IOS_BASE::beg) && off<0) || ((way == IOS_BASE::end) && off > 0)
#endif
)
return pos_type(-1);
PRSeekWhence poseek = PR_SEEK_CUR;
switch (way)
{
case IOS_BASE::beg : poseek= PR_SEEK_SET;
break;
case IOS_BASE::end : poseek= PR_SEEK_END;
break;
}
PRInt32 position = PR_Seek(mFileDesc, off, poseek);
if (position < 0)
return pos_type(-1);
return pos_type(position);
}
#endif // #if defined(DEFINING_FILE_STREAM)
#if defined(DEFINING_FILE_STREAM)
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
POS_TYPE FILE_BUFFER_TYPE::seekpos(pos_type sp, IOS_BASE::openmode)
//----------------------------------------------------------------------------------------
{
if (!mFileDesc || sp==pos_type(-1))
return -1;
#56767 r/a=cls,leaf Remove XP_PC - use XP_WIN or XP_OS2 explicitly
2000-11-28 23:27:38 +00:00
#if defined(XP_WIN) || defined(XP_UNIX) || defined(XP_OS2) || defined(XP_BEOS)
First Checked In.
1998-12-18 22:38:28 +00:00
PRInt32 position = sp;
#else
PRInt32 position = sp.offset();
#endif
position = PR_Seek(mFileDesc, position, PR_SEEK_SET);
if (position < 0)
return pos_type(-1);
return position;
}
#endif // #if defined(DEFINING_FILE_STREAM)
//========================================================================================
// Implementation of nsInputFileStreamT
//========================================================================================
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline INPUT_FILE_STREAM::nsInputFileStreamT()
: BASIC_ISTREAM(&mBuffer)
//----------------------------------------------------------------------------------------
{
// already inited
}
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline INPUT_FILE_STREAM::nsInputFileStreamT(
const nsFilePath& inFile,
IOS_BASE::openmode mode,
PRIntn accessMode)
//----------------------------------------------------------------------------------------
: BASIC_ISTREAM(&mBuffer)
{
// already inited
if (!mBuffer.open(inFile, openmode(mode|in), accessMode))
setstate(failbit);
}
#if defined(DEFINING_FILE_STREAM)
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
INPUT_FILE_STREAM::~nsInputFileStreamT()
//----------------------------------------------------------------------------------------
{
}
#endif // #if defined(DEFINING_FILE_STREAM)
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline FILE_BUFFER_TYPE* INPUT_FILE_STREAM::rdbuf() const
//----------------------------------------------------------------------------------------
{
return (FILE_BUFFER_TYPE*)&mBuffer;
}
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline bool INPUT_FILE_STREAM:: is_open()
//----------------------------------------------------------------------------------------
{
return mBuffer.is_open();
}
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline void INPUT_FILE_STREAM::open(
const nsFilePath& inFile,
IOS_BASE::openmode mode,
PRIntn accessMode)
//----------------------------------------------------------------------------------------
{
if (!mBuffer.open(inFile, openmode(mode|in), accessMode))
setstate(failbit);
}
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline void INPUT_FILE_STREAM::close()
//----------------------------------------------------------------------------------------
{
if (!mBuffer.close())
setstate(failbit);
}
//========================================================================================
// Implementation of nsOutputFileStreamT
//========================================================================================
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline OUTPUT_FILE_STREAM::nsOutputFileStreamT()
: BASIC_OSTREAM(&mBuffer)
//----------------------------------------------------------------------------------------
{
// already inited
}
#if defined(DEFINING_FILE_STREAM)
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
OUTPUT_FILE_STREAM::nsOutputFileStreamT(
const nsFilePath& inFile,
IOS_BASE::openmode mode,
PRIntn accessMode)
//----------------------------------------------------------------------------------------
: BASIC_OSTREAM(&mBuffer)
{
// already inited
if (!mBuffer.open(inFile, openmode(mode|out), accessMode))
setstate(failbit);
}
#endif // #if defined(DEFINING_FILE_STREAM)
#if defined(DEFINING_FILE_STREAM)
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline OUTPUT_FILE_STREAM::~nsOutputFileStreamT()
//----------------------------------------------------------------------------------------
{
}
#endif // #if defined(DEFINING_FILE_STREAM)
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline FILE_BUFFER_TYPE*
OUTPUT_FILE_STREAM::rdbuf() const
//----------------------------------------------------------------------------------------
{
return (FILE_BUFFER_TYPE*)&mBuffer;
}
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline bool OUTPUT_FILE_STREAM:: is_open()
//----------------------------------------------------------------------------------------
{
return mBuffer.is_open();
}
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline void OUTPUT_FILE_STREAM::open(
const nsFilePath& inFile,
IOS_BASE::openmode mode,
PRIntn accessMode)
//----------------------------------------------------------------------------------------
{
if (!mBuffer.open(inFile, openmode(mode | out), accessMode))
setstate(failbit);
}
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline void OUTPUT_FILE_STREAM:: close()
//----------------------------------------------------------------------------------------
{
if (!mBuffer.close())
setstate(failbit);
}
//========================================================================================
TEMPLATE_DEF
class nsIOFileStreamT : public BASIC_IOSTREAM
//========================================================================================
{
#ifdef NS_USING_STL
public:
typedef charT char_type;
typedef typename traits::pos_type pos_type;
typedef typename traits::off_type off_type;
typedef typename traits::int_type int_type;
typedef traits traits_type;
#endif
public:
nsIOFileStreamT();
explicit nsIOFileStreamT(
const nsFilePath& inFile,
IOS_BASE::openmode mode = IOS_BASE::in|IOS_BASE::out,
PRIntn accessMode = 0x00600);
virtual ~nsIOFileStreamT();
FILE_BUFFER_TYPE* rdbuf() const;
inline bool is_open();
inline void open(
const nsFilePath& inFile,
IOS_BASE::openmode mode = IOS_BASE::in|IOS_BASE::out,
PRIntn accessMode = 0x00600);
inline void close();
private:
FILE_BUFFER_TYPE mBuffer;
}; // class nsIOFileStreamT
//========================================================================================
// Implementation of nsIOFileStream
//========================================================================================
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline IO_FILE_STREAM::nsIOFileStreamT()
//----------------------------------------------------------------------------------------
: mBuffer(), BASIC_IOSTREAM(&mBuffer)
{
// already inited
}
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline IO_FILE_STREAM::nsIOFileStreamT(
const nsFilePath& inFile,
IOS_BASE::openmode mode,
PRIntn accessMode)
//----------------------------------------------------------------------------------------
: mBuffer(), BASIC_IOSTREAM(&mBuffer)
{
// already inited
if (!mBuffer.open(inFile, mode, accessMode))
setstate(failbit);
}
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline IO_FILE_STREAM::~nsIOFileStreamT()
//----------------------------------------------------------------------------------------
{
}
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline FILE_BUFFER_TYPE*
IO_FILE_STREAM::rdbuf() const
//----------------------------------------------------------------------------------------
{
return (FILE_BUFFER_TYPE*)&mBuffer;
}
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline bool IO_FILE_STREAM::is_open()
//----------------------------------------------------------------------------------------
{
return mBuffer.is_open();
}
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline void IO_FILE_STREAM::open(
const nsFilePath& inFile,
IOS_BASE::openmode mode,
PRIntn accessMode)
//----------------------------------------------------------------------------------------
{
if (!mBuffer.open(inFile, mode, accessMode))
setstate(failbit);
}
//----------------------------------------------------------------------------------------
TEMPLATE_DEF
inline void IO_FILE_STREAM::close()
//----------------------------------------------------------------------------------------
{
if (!mBuffer.close())
setstate(failbit);
}
//========================================================================================
// Specializations of the stream templates
//========================================================================================
#ifdef NS_USING_STL
typedef nsFileBufferT<char, char_traits<char> > nsFileBuffer;
typedef nsInputFileStreamT<char, char_traits<char> > nsInputFileStream;
typedef nsOutputFileStreamT<char, char_traits<char> > nsOutputFileStream;
typedef nsIOFileStreamT<char, char_traits<char> > nsIOFileStream;
#ifdef NS_USING_WIDE_CHAR
typedef nsFileBufferT<wchar_t, char_traits<wchar_t> > nsWideFileBuffer;
typedef nsInputFileStreamT<wchar_t, char_traits<wchar_t> > nsWideInputFileStream;
typedef nsOutputFileStreamT<wchar_t, char_traits<wchar_t> > nsWideOutputFileStream;
typedef nsIOFileStreamT<wchar_t, char_traits<wchar_t> > nsWideIOFileStream;
#endif // NS_USING_WIDE_CHAR
#else
typedef nsFileBufferT nsFileBuffer;
typedef nsInputFileStreamT nsInputFileStream;
typedef nsOutputFileStreamT nsOutputFileStream;
typedef nsIOFileStreamT nsIOFileStream;
#endif
#endif /* _FILESTREAM_H_ */
Reference in New Issue Copy Permalink