Created accidentallyRelease_1_8_0

1 files changed, 0 insertions, 550 deletions

diff --git a/trunk/qtools/qfile.cpp b/trunk/qtools/qfile.cpp
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index 98ed9a3..0000000
--- a/trunk/qtools/qfile.cpp
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-/****************************************************************************
-** 
-**
-** Implementation of QFile class
-**
-** Created : 930812
-**
-** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
-**
-** This file is part of the tools module of the Qt GUI Toolkit.
-**
-** This file may be distributed under the terms of the Q Public License
-** as defined by Trolltech AS of Norway and appearing in the file
-** LICENSE.QPL included in the packaging of this file.
-**
-** This file may be distributed and/or modified under the terms of the
-** GNU General Public License version 2 as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL included in the
-** packaging of this file.
-**
-** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
-** licenses may use this file in accordance with the Qt Commercial License
-** Agreement provided with the Software.
-**
-** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
-** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
-**
-** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
-**   information about Qt Commercial License Agreements.
-** See http://www.trolltech.com/qpl/ for QPL licensing information.
-** See http://www.trolltech.com/gpl/ for GPL licensing information.
-**
-** Contact info@trolltech.com if any conditions of this licensing are
-** not clear to you.
-**
-**********************************************************************/
-
-#include "qglobal.h"
-#if defined(_OS_WIN32_)
-#ifdef UNICODE
-#ifndef _UNICODE
-#define _UNICODE
-#endif
-#endif
-#endif
-
-#include "qfile.h"
-#include "qfiledefs_p.h"
-
-extern bool qt_file_access( const QString& fn, int t );
-
-// NOT REVISED
-/*!
-  \class QFile qfile.h
-  \brief The QFile class is an I/O device that operates on files.
-
-  \ingroup io
-
-  QFile is an I/O device for reading and writing binary and text files.	A
-  QFile may be used by itself (readBlock and writeBlock) or by more
-  conveniently using QDataStream or QTextStream.
-
-  Here is a code fragment that uses QTextStream to read a text
-  file line by line. It prints each line with a line number.
-  \code
-    QFile f("file.txt");
-    if ( f.open(IO_ReadOnly) ) {    // file opened successfully
-	QTextStream t( &f );	    // use a text stream
-	QString s;
-	int n = 1;
-	while ( !t.eof() ) {	    // until end of file...
-	    s = t.readLine();	    // line of text excluding '\n'
-	    printf( "%3d: %s\n", n++, (const char *)s );
-	}
-	f.close();
-    }
-  \endcode
-
-  The QFileInfo class holds detailed information about a file, such as
-  access permissions, file dates and file types.
-
-  The QDir class manages directories and lists of file names.
-
-  \sa QDataStream, QTextStream
-*/
-
-
-/*!
-  Constructs a QFile with no name.
-*/
-
-QFile::QFile()
-{
-    init();
-}
-
-/*!
-  Constructs a QFile with a file name \e name.
-  \sa setName()
-*/
-
-QFile::QFile( const QString &name )
-    : fn(name)
-{
-    init();
-}
-
-
-/*!
-  Destructs a QFile.  Calls close().
-*/
-
-QFile::~QFile()
-{
-    close();
-}
-
-
-/*!
-  \internal
-  Initialize internal data.
-*/
-
-void QFile::init()
-{
-    setFlags( IO_Direct );
-    setStatus( IO_Ok );
-    fh	   = 0;
-    fd	   = 0;
-    length = 0;
-    ioIndex = 0;
-    ext_f  = FALSE;				// not an external file handle
-}
-
-
-/*!
-  \fn QString QFile::name() const
-  Returns the name set by setName().
-  \sa setName(), QFileInfo::fileName()
-*/
-
-/*!
-  Sets the name of the file. The name can include an absolute directory
-  path or it can be a name or a path relative to the current directory.
-
-  Do not call this function if the file has already been opened.
-
-  Note that if the name is relative QFile does not associate it with the
-  current directory.  If you change directory before calling open(), open
-  uses the new current directory.
-
-  Example:
-  \code
-     QFile f;
-     QDir::setCurrent( "/tmp" );
-     f.setName( "readme.txt" );
-     QDir::setCurrent( "/home" );
-     f.open( IO_ReadOnly );	   // opens "/home/readme.txt" under UNIX
-  \endcode
-
-  Also note that the directory separator '/' works for all operating
-  systems supported by Qt.
-
-  \sa name(), QFileInfo, QDir
-*/
-
-void QFile::setName( const QString &name )
-{
-    if ( isOpen() ) {
-#if defined(CHECK_STATE)
-	qWarning( "QFile::setName: File is open" );
-#endif
-	close();
-    }
-    fn = name;
-}
-
-/*!
-  Returns TRUE if this file exists, otherwise FALSE.
-  \sa name()
-*/
-
-bool QFile::exists() const
-{
-    return qt_file_access( fn, F_OK );
-}
-
-/*!
-  Returns TRUE if the file given by \e fileName exists, otherwise FALSE.
-*/
-
-bool QFile::exists( const QString &fileName )
-{
-    return qt_file_access( fileName, F_OK );
-}
-
-
-/*!
-  Removes the file specified by the file name currently set.
-  Returns TRUE if successful, otherwise FALSE.
-
-  The file is closed before it is removed.
-*/
-
-bool QFile::remove()
-{
-    close();
-    return remove( fn );
-}
-
-#if defined(_OS_MAC_) || defined(_OS_MSDOS_) || defined(_OS_WIN32_) || defined(_OS_OS2_) || defined(_OS_CYGWIN_)
-# define HAS_TEXT_FILEMODE			// has translate/text filemode
-#endif
-#if defined(O_NONBLOCK)
-# define HAS_ASYNC_FILEMODE
-# define OPEN_ASYNC O_NONBLOCK
-#elif defined(O_NDELAY)
-# define HAS_ASYNC_FILEMODE
-# define OPEN_ASYNC O_NDELAY
-#endif
-
-/*!
-  Flushes the file buffer to the disk.
-
-  close() also flushes the file buffer.
-*/
-
-void QFile::flush()
-{
-    if ( isOpen() && fh )			// can only flush open/buffered
-	fflush( fh );				//   file
-}
-
-/*!
-  Returns TRUE if the end of file has been reached, otherwise FALSE.
-  \sa size()
-*/
-
-bool QFile::atEnd() const
-{
-    if ( !isOpen() ) {
-#if defined(CHECK_STATE)
-	qWarning( "QFile::atEnd: File is not open" );
-#endif
-	return FALSE;
-    }
-    if ( isDirectAccess() && !isTranslated() ) {
-	if ( at() < length )
-	    return FALSE;
-    }
-    return QIODevice::atEnd();
-}
-
-/*!
-  Reads a line of text.
-
-  Reads bytes from the file until end-of-line is reached, or up to \a
-  maxlen bytes, and returns the number of bytes read, or -1 in case of
-  error.  The terminating newline is not stripped.
-
-  This function is efficient only for buffered files.  Avoid
-  readLine() for files that have been opened with the \c IO_Raw
-  flag.
-
-  \sa readBlock(), QTextStream::readLine()
-*/
-
-int QFile::readLine( char *p, uint maxlen )
-{
-    if ( maxlen == 0 )				// application bug?
-	return 0;
-#if defined(CHECK_STATE)
-    CHECK_PTR( p );
-    if ( !isOpen() ) {				// file not open
-	qWarning( "QFile::readLine: File not open" );
-	return -1;
-    }
-    if ( !isReadable() ) {			// reading not permitted
-	qWarning( "QFile::readLine: Read operation not permitted" );
-	return -1;
-    }
-#endif
-    int nread;					// number of bytes read
-    if ( isRaw() ) {				// raw file
-	nread = QIODevice::readLine( p, maxlen );
-    } else {					// buffered file
-	p = fgets( p, maxlen, fh );
-	if ( p ) {
-	    nread = qstrlen( p );
-	    ioIndex += nread;
-	} else {
-	    nread = -1;
-	    setStatus(IO_ReadError);
-	}
-    }
-    return nread;
-}
-
-
-/*!
-  Reads a line of text.
-
-  Reads bytes from the file until end-of-line is reached, or up to \a
-  maxlen bytes, and returns the number of bytes read, or -1 in case of
-  error.  The terminating newline is not stripped.
-
-  This function is efficient only for buffered files.  Avoid
-  readLine() for files that have been opened with the \c IO_Raw
-  flag.
-
-  Note that the string is read as plain Latin1 bytes, not Unicode.
-
-  \sa readBlock(), QTextStream::readLine()
-*/
-
-int QFile::readLine( QString& s, uint maxlen )
-{
-    QByteArray ba(maxlen);
-    int l = readLine(ba.data(),maxlen);
-    if ( l >= 0 ) {
-	ba.truncate(l);
-	s = QString(ba);
-    }
-    return l;
-}
-
-
-/*!
-  Reads a single byte/character from the file.
-
-  Returns the byte/character read, or -1 if the end of the file has been
-  reached.
-
-  \sa putch(), ungetch()
-*/
-
-int QFile::getch()
-{
-#if defined(CHECK_STATE)
-    if ( !isOpen() ) {				// file not open
-	qWarning( "QFile::getch: File not open" );
-	return EOF;
-    }
-    if ( !isReadable() ) {			// reading not permitted
-	qWarning( "QFile::getch: Read operation not permitted" );
-	return EOF;
-    }
-#endif
-
-    int ch;
-
-    if ( !ungetchBuffer.isEmpty() ) {
-	int len = ungetchBuffer.length();
-	ch = ungetchBuffer[ len-1 ];
-	ungetchBuffer.truncate( len - 1 );
-	return ch;
-    }
-
-    if ( isRaw() ) {				// raw file (inefficient)
-	char buf[1];
-	ch = readBlock( buf, 1 ) == 1 ? buf[0] : EOF;
-    } else {					// buffered file
-	if ( (ch = getc( fh )) != EOF )
-	    ioIndex++;
-	else
-	    setStatus(IO_ReadError);
-    }
-    return ch;
-}
-
-/*!
-  \fn int QFile::writeBlock( const QByteArray& data )
-  \reimp
-  \internal
-  Should be removed in 3.0
-*/
-
-/*!
-  Writes the character \e ch to the file.
-
-  Returns \e ch, or -1 if some error occurred.
-
-  \sa getch(), ungetch()
-*/
-
-int QFile::putch( int ch )
-{
-#if defined(CHECK_STATE)
-    if ( !isOpen() ) {				// file not open
-	qWarning( "QFile::putch: File not open" );
-	return EOF;
-    }
-    if ( !isWritable() ) {			// writing not permitted
-	qWarning( "QFile::putch: Write operation not permitted" );
-	return EOF;
-    }
-#endif
-    if ( isRaw() ) {				// raw file (inefficient)
-	char buf[1];
-	buf[0] = ch;
-	ch = writeBlock( buf, 1 ) == 1 ? ch : EOF;
-    } else {					// buffered file
-	if ( (ch = putc( ch, fh )) != EOF ) {
-	    ioIndex++;
-	    if ( ioIndex > length )		// update file length
-		length = ioIndex;
-	} else {
-	    setStatus(IO_WriteError);
-	}
-    }
-    return ch;
-}
-
-/*!
-  Puts the character \e ch back into the file and decrements the index if it
-  is not zero.
-
-  This function is normally called to "undo" a getch() operation.
-
-  Returns \e ch, or -1 if some error occurred.
-
-  \sa getch(), putch()
-*/
-
-int QFile::ungetch( int ch )
-{
-#if defined(CHECK_STATE)
-    if ( !isOpen() ) {				// file not open
-	qWarning( "QFile::ungetch: File not open" );
-	return EOF;
-    }
-    if ( !isReadable() ) {			// reading not permitted
-	qWarning( "QFile::ungetch: Read operation not permitted" );
-	return EOF;
-    }
-#endif
-    if ( ch == EOF )				// cannot unget EOF
-	return ch;
-
-    if ( isSequentialAccess() && !fh) {
-	// pipe or similar => we cannot ungetch, so do it manually
-	ungetchBuffer +=ch;
-	return ch;
-    }
-
-    if ( isRaw() ) {				// raw file (very inefficient)
-	char buf[1];
-	at( ioIndex-1 );
-	buf[0] = ch;
-	if ( writeBlock(buf, 1) == 1 )
-	    at ( ioIndex-1 );
-	else
-	    ch = EOF;
-    } else {					// buffered file
-	if ( (ch = ungetc(ch, fh)) != EOF )
-	    ioIndex--;
-	else
-	    setStatus( IO_ReadError );
-    }
-    return ch;
-}
-
-
-static QCString locale_encoder( const QString &fileName )
-{
-    return fileName.local8Bit();
-}
-
-
-static QFile::EncoderFn encoder = locale_encoder;
-
-/*!
-  When you use QFile, QFileInfo, and QDir to access the filesystem
-  with Qt, you can use Unicode filenames.  On Unix, these filenames
-  are converted to an 8-bit encoding.  If you want to do your own
-  file I/O on Unix, you should convert the filename using this
-  function.  On Windows NT, Unicode filenames are supported directly
-  in the filesystem and this function should be avoided. On Windows 95,
-  non-Latin1 locales are not supported at this time.
-
-  By default, this function converts to the local 8-bit encoding
-  determined by the user's locale.  This is sufficient for
-  filenames that the user chooses.  Filenames hard-coded into the
-  application should only use 7-bit ASCII filename characters.
-
-  The conversion scheme can be changed using setEncodingFunction().
-  This might be useful if you wish to give the user an option to
-  store in filenames in UTF-8, etc., but beware that such filenames
-  would probably then be unrecognizable when seen by other programs.
-
-  \sa decodeName()
-*/
-
-QCString QFile::encodeName( const QString &fileName )
-{
-    return (*encoder)(fileName);
-}
-
-/*!
-  \enum QFile::EncoderFn
-
-  This is used by QFile::setEncodingFunction().
-*/
-
-/*!
-  Sets the function for encoding Unicode filenames.
-  The default encodes in the locale-specific 8-bit encoding.
-
-  \sa encodeName()
-*/
-void QFile::setEncodingFunction( EncoderFn f )
-{
-    encoder = f;
-}
-
-static
-QString locale_decoder( const QCString &localFileName )
-{
-    return QString::fromLocal8Bit(localFileName);
-}
-
-static QFile::DecoderFn decoder = locale_decoder;
-
-/*!
-  This does the reverse of QFile::encodeName().
-
-  \sa setDecodingFunction()
-*/
-QString QFile::decodeName( const QCString &localFileName )
-{
-    return (*decoder)(localFileName);
-}
-
-/*!
-  \enum QFile::DecoderFn
-
-  This is used by QFile::setDecodingFunction().
-*/
-
-/*!
-  Sets the function for decoding 8-bit filenames.
-  The default uses the locale-specific 8-bit encoding.
-
-  \sa encodeName(), decodeName()
-*/
-
-void QFile::setDecodingFunction( DecoderFn f )
-{
-    decoder = f;
-}