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authorar <ar>2004-06-13 17:46:33 (UTC)
committer ar <ar>2004-06-13 17:46:33 (UTC)
commitecf1fb42bef9d64869349abd4e550f0b6d2cfa59 (patch) (side-by-side diff)
tree2001746dd484b155d04b7f1500b14538bf0b8b08
parent07d700581b9f608d3105eb8d82d9b4cfa0084317 (diff)
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- fix error-handling again ;)
Diffstat (more/less context) (ignore whitespace changes)
-rw-r--r--library/filemanager.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/library/filemanager.cpp b/library/filemanager.cpp
index 99837fe..adfe590 100644
--- a/library/filemanager.cpp
+++ b/library/filemanager.cpp
@@ -85,356 +85,356 @@ bool FileManager::saveFile( const DocLnk &f, const QByteArray &data )
if ( !renameFile( fn.latin1(), f.file().latin1() ) ) {
qWarning( "problem renaming file %s to %s, errno: %d", fn.latin1(),
f.file().latin1(), errno );
// remove the file...
}
return TRUE;
}
/*!
Saves \a text as the document specified by \a f.
The text is saved in UTF8 format.
Returns whether the operation succeeded.
*/
bool FileManager::saveFile( const DocLnk &f, const QString &text )
{
QString fn = f.file() + ".new";
ensurePathExists( fn );
QFile fl( fn );
if ( !fl.open( IO_WriteOnly|IO_Raw ) ) {
qWarning("open failed");
return FALSE;
}
QCString cstr = text.utf8();
int total_written;
total_written = fl.writeBlock( cstr.data(), cstr.length() );
fl.close();
if ( total_written != int(cstr.length()) || !f.writeLink() ) {
QFile::remove( fn );
return FALSE;
}
// okay now rename the file..
if ( !renameFile( fn.latin1(), f.file().latin1() ) ) {
qWarning( "problem renaming file %s to %s, errno: %d", fn.latin1(),
f.file().latin1(), errno );
}
return TRUE;
}
/*!
Loads \a text from the document specified by \a f.
The text is required to be in UTF8 format.
Returns whether the operation succeeded.
*/
bool FileManager::loadFile( const DocLnk &f, QString &text )
{
QString fn = f.file();
QFile fl( fn );
if ( !fl.open( IO_ReadOnly ) )
return FALSE;
QTextStream ts( &fl );
#if QT_VERSION <= 230 && defined(QT_NO_CODECS)
// The below should work, but doesn't in Qt 2.3.0
ts.setCodec( QTextCodec::codecForMib( 106 ) );
#else
ts.setEncoding( QTextStream::UnicodeUTF8 );
#endif
text = ts.read();
fl.close();
return TRUE;
}
/*!
Loads \a ba from the document specified by \a f.
Returns whether the operation succeeded.
*/
bool FileManager::loadFile( const DocLnk &f, QByteArray &ba )
{
QString fn = f.file();
QFile fl( fn );
if ( !fl.open( IO_ReadOnly ) )
return FALSE;
ba.resize( fl.size() );
if ( fl.size() > 0 )
fl.readBlock( ba.data(), fl.size() );
fl.close();
return TRUE;
}
/*!
Copies the document specified by \a src to the document specified
by \a dest.
Returns whether the operation succeeded.
*/
bool FileManager::copyFile( const AppLnk &src, const AppLnk &dest )
{
QFile sf( src.file() );
if ( !sf.open( IO_ReadOnly ) )
return FALSE;
QString fn = dest.file() + ".new";
ensurePathExists( fn );
QFile df( fn );
if ( !df.open( IO_WriteOnly|IO_Raw ) )
return FALSE;
const int bufsize = 16384;
char buffer[bufsize];
bool ok = TRUE;
int bytesRead = 0;
while ( ok && !sf.atEnd() ) {
bytesRead = sf.readBlock( buffer, bufsize );
if ( bytesRead < 0 )
ok = FALSE;
while ( ok && bytesRead > 0 ) {
int bytesWritten = df.writeBlock( buffer, bytesRead );
if ( bytesWritten < 0 )
ok = FALSE;
else
bytesRead -= bytesWritten;
}
}
if ( ok )
ok = dest.writeLink();
if ( ok ) {
// okay now rename the file...
if ( !renameFile( fn.latin1(), dest.file().latin1() ) ) {
qWarning( "problem renaming file %s to %s, errno: %d", fn.latin1(),
dest.file().latin1(), errno );
// remove the tmp file, otherwise, it will just lay around...
QFile::remove( fn.latin1() );
}
} else {
QFile::remove( fn.latin1() );
}
return ok;
}
bool FileManager::copyFile( const QString & src, const QString & dest ) {
bool success = true;
struct stat status;
int read_fd=0;
int write_fd=0;
struct stat stat_buf;
off_t offset = 0;
QFile srcFile(src);
QFile destFile(dest);
if(!srcFile.open( IO_ReadOnly|IO_Raw)) {
return success = false;
}
read_fd = srcFile.handle();
if(read_fd != -1) {
fstat (read_fd, &stat_buf);
if( !destFile.open( IO_WriteOnly|IO_Raw ) )
return success = false;
write_fd = destFile.handle();
if(write_fd != -1) {
int err=0;
QString msg;
#ifdef Q_OS_MACX
#ifdef SENDFILE
/* FreeBSD does support a different kind of
* sendfile. (eilers)
* I took this from Very Secure FTPd
* Licence: GPL
* Author: Chris Evans
* sysdeputil.c
*/
/* XXX - start_pos will truncate on 32-bit machines - can we
* say "start from current pos"?
*/
off_t written = 0;
int retval = 0;
retval = sendfile(read_fd, write_fd, offset, stat_buf.st_size, NULL,
&written, 0);
/* Translate to Linux-like retval */
if (written > 0)
{
err = (int) written;
}
#else /* SENDFILE */
err == -1;
msg = "FAILURE: Using unsupported function \"sendfile()\" Need Workaround !!";
success = false;
# warning "Need workaround for sendfile!!(eilers)"
#endif /* SENDFILE */
#else
err = sendfile(write_fd, read_fd, &offset, stat_buf.st_size);
- if( err != -1) {
- switch(err) {
+ if( err == -1) {
+ switch(errno) {
case EBADF : msg = "The input file was not opened for reading or the output file was not opened for writing. ";
case EINVAL: msg = "Descriptor is not valid or locked. ";
case ENOMEM: msg = "Insufficient memory to read from in_fd.";
case EIO: msg = "Unspecified error while reading from in_fd.";
};
success = false;
}
#endif /* Q_OS_MACX */
if( !success )
qWarning( msg );
} else {
qWarning("open write failed %s, %s",src.latin1(), dest.latin1());
success = false;
}
} else {
qWarning("open read failed %s, %s",src.latin1(), dest.latin1());
success = false;
}
srcFile.close();
destFile.close();
// Set file permissions
if( stat( (const char *) src, &status ) == 0 ) {
chmod( (const char *) dest, status.st_mode );
}
return success;
}
bool FileManager::renameFile( const QString & src, const QString & dest ) {
if(copyFile( src, dest )) {
if(QFile::remove(src) ) {
return true;
}
}
return false;
}
/*
bool FileManager::copyFile( const QString & src, const QString & dest ) {
bool success = true;
struct stat status;
int read_fd=0;
int write_fd=0;
struct stat stat_buf;
off_t offset = 0;
QFile srcFile(src);
QFile destFile(dest);
if(!srcFile.open( IO_ReadOnly|IO_Raw)) {
return success = false;
}
read_fd = srcFile.handle();
if(read_fd != -1) {
fstat (read_fd, &stat_buf);
if( !destFile.open( IO_WriteOnly|IO_Raw ) )
return success = false;
write_fd = destFile.handle();
if(write_fd != -1) {
int err=0;
QString msg;
err = sendfile(write_fd, read_fd, &offset, stat_buf.st_size);
if( err == -1) {
switch(err) {
case EBADF : msg = "The input file was not opened for reading or the output file was not opened for writing. ";
case EINVAL: msg = "Descriptor is not valid or locked. ";
case ENOMEM: msg = "Insufficient memory to read from in_fd.";
case EIO: msg = "Unspecified error while reading from in_fd.";
};
success = false;
}
} else {
qWarning("open write failed %s, %s",src.latin1(), dest.latin1());
success = false;
}
} else {
qWarning("open read failed %s, %s",src.latin1(), dest.latin1());
success = false;
}
srcFile.close();
destFile.close();
// Set file permissions
if( stat( (const char *) src, &status ) == 0 ) {
chmod( (const char *) dest, status.st_mode );
}
return success;
}
bool FileManager::renameFile( const QString & src, const QString & dest ) {
if(copyFile( src, dest )) {
if(QFile::remove(src) ) {
return true;
}
}
return false;
}
*/
/*!
Opens the document specified by \a f as a readable QIODevice.
The caller must delete the return value.
Returns 0 if the operation fails.
*/
QIODevice* FileManager::openFile( const DocLnk& f )
{
QString fn = f.file();
QFile* fl = new QFile( fn );
if ( !fl->open( IO_ReadOnly ) ) {
delete fl;
fl = 0;
}
return fl;
}
/*!
Opens the document specified by \a f as a writable QIODevice.
The caller must delete the return value.
Returns 0 if the operation fails.
*/
QIODevice* FileManager::saveFile( const DocLnk& f )
{
QString fn = f.file();
ensurePathExists( fn );
QFile* fl = new QFile( fn );
if ( fl->open( IO_WriteOnly ) ) {
f.writeLink();
} else {
delete fl;
fl = 0;
}
return fl;
}
/*!
Returns whether the document specified by \a f current exists
as a file on disk.
*/
bool FileManager::exists( const DocLnk &f )
{
return QFile::exists(f.file());
}
/*!
Ensures that the path \a fn exists, by creating required directories.
Returns TRUE if successful.
*/
bool FileManager::ensurePathExists( const QString &fn )
{
QFileInfo fi(fn);
fi.setFile( fi.dirPath(TRUE) );
if ( !fi.exists() ) {
if ( system(("mkdir -p "+fi.filePath())) )
return FALSE;
}
return TRUE;
}