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authorllornkcor <llornkcor>2003-07-10 02:40:10 (UTC)
committer llornkcor <llornkcor>2003-07-10 02:40:10 (UTC)
commit155d68c1e7d7dc0fed2534ac43d6d77ce2781f55 (patch) (side-by-side diff)
treee6edaa5a7040fe6c224c3943d1094dcf02e4f74c /qmake/tools/qfile.cpp
parent86703e8a5527ef114facd02c005b6b3a7e62e263 (diff)
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update qmake to 1.05a
Diffstat (limited to 'qmake/tools/qfile.cpp') (more/less context) (ignore whitespace changes)
-rw-r--r--qmake/tools/qfile.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/qmake/tools/qfile.cpp b/qmake/tools/qfile.cpp
index a578b49..c088b55 100644
--- a/qmake/tools/qfile.cpp
+++ b/qmake/tools/qfile.cpp
@@ -27,129 +27,129 @@
**
** 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 "qplatformdefs.h"
// POSIX Large File Support redefines open -> open64
#if defined(open)
# undef open
#endif
// POSIX Large File Support redefines truncate -> truncate64
#if defined(truncate)
# undef truncate
#endif
#include "qfile.h"
extern bool qt_file_access( const QString& fn, int t );
/*!
\class QFile qfile.h
\reentrant
\brief The QFile class is an I/O device that operates on files.
\ingroup io
\mainclass
QFile is an I/O device for reading and writing binary and text
files. A QFile may be used by itself or more conveniently with a
QDataStream or QTextStream.
The file name is usually passed in the constructor but can be
changed with setName(). You can check for a file's existence with
exists() and remove a file with remove().
The file is opened with open(), closed with close() and flushed
with flush(). Data is usually read and written using QDataStream
or QTextStream, but you can read with readBlock() and readLine()
and write with writeBlock(). QFile also supports getch(),
ungetch() and putch().
The size of the file is returned by size(). You can get the
current file position or move to a new file position using the
at() functions. If you've reached the end of the file, atEnd()
returns TRUE. The file handle is returned by handle().
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
QStringList lines;
QFile file( "file.txt" );
if ( file.open( IO_ReadOnly ) ) {
QTextStream stream( &file );
QString line;
int i = 1;
- while ( !stream.eof() ) {
+ while ( !stream.atEnd() ) {
line = stream.readLine(); // line of text excluding '\n'
printf( "%3d: %s\n", i++, line.latin1() );
lines += line;
}
file.close();
}
\endcode
Writing text is just as easy. The following example shows how to
write the data we read into the string list from the previous
example:
\code
QFile file( "file.txt" );
if ( file.open( IO_WriteOnly ) ) {
QTextStream stream( &file );
for ( QStringList::Iterator it = lines.begin(); it != lines.end(); ++it )
stream << *it << "\n";
file.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.
Qt uses Unicode file names. If you want to do your own I/O on Unix
systems you may want to use encodeName() (and decodeName()) to
convert the file name into the local encoding.
\important readAll()
\sa QDataStream, QTextStream
*/
/*!
\fn Q_LONG QFile::writeBlock( const QByteArray& data )
\overload
*/
/*!
Constructs a QFile with no name.
*/
QFile::QFile()
{
init();
}
/*!
Constructs a QFile with a file name \a name.
\sa setName()
*/
QFile::QFile( const QString &name )
: fn(name)
{
init();
}
@@ -229,128 +229,129 @@ void QFile::setName( const QString &name )
Returns TRUE if this file exists; otherwise returns FALSE.
\sa name()
*/
bool QFile::exists() const
{
return qt_file_access( fn, F_OK );
}
/*!
Returns TRUE if the file given by \a fileName exists; otherwise
returns 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 returns FALSE.
The file is closed before it is removed.
*/
bool QFile::remove()
{
close();
return remove( fn );
}
#if defined(Q_OS_MAC) || defined(Q_OS_MSDOS) || defined(Q_OS_WIN32) || defined(Q_OS_OS2)
# 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
}
/*! \reimp
\fn QIODevice::Offset QFile::at() const
*/
/*!
Returns TRUE if the end of file has been reached; otherwise returns FALSE.
+ If QFile has not been open()'d, then the behavior is undefined.
\sa size()
*/
bool QFile::atEnd() const
{
if ( !isOpen() ) {
#if defined(QT_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 into the char* \a p, until end-of-line
or \a maxlen bytes have been read, whichever occurs first. Returns
the number of bytes read, or -1 if there was an error. Any
terminating newline is not stripped.
This function is only efficient for buffered files. Avoid
readLine() for files that have been opened with the \c IO_Raw
flag.
\sa readBlock(), QTextStream::readLine()
*/
Q_LONG QFile::readLine( char *p, Q_ULONG maxlen )
{
if ( maxlen == 0 ) // application bug?
return 0;
#if defined(QT_CHECK_STATE)
Q_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
Q_LONG 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 );
if ( !isSequentialAccess() )
ioIndex += nread;
} else {
nread = -1;
setStatus(IO_ReadError);
}
}
return nread;