- fix error-handling again ;)

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
@@ -1,440 +1,440 @@
 /**********************************************************************
 ** Copyright (C) 2000 Trolltech AS.  All rights reserved.
 **
 ** This file is part of Qtopia Environment.
 **
 ** 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.
 **
 ** 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/gpl/ for GPL licensing information.
 **
 ** Contact info@trolltech.com if any conditions of this licensing are
 ** not clear to you.
 **
 **********************************************************************/
 #include "filemanager.h"
 #include "applnk.h"
 
 #include <qfileinfo.h>
 #include <qtextstream.h>
 
 #include <errno.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <sys/stat.h>
 #include <dirent.h>
 #ifdef Q_OS_MACX
 // MacOS X does not have sendfile.. :(
 // But maybe in the future.. !?
 #  ifdef SENDFILE
 #    include <sys/types.h>
 #    include <sys/socket.h>
 #  endif
 #else
 #  include <sys/sendfile.h>
 #endif /* Q_OS_MACX */
 #include <fcntl.h>
 
 /*!
   \class FileManager
   \brief The FileManager class assists with AppLnk input/output.
 */
 
 /*!
   Constructs a FileManager.
 */
 FileManager::FileManager()
 {
 }
 
 /*!
   Destroys a FileManager.
 */
 FileManager::~FileManager()
 {
 
 }
 
 /*!
   Saves \a data as the document specified by \a f.
 
   Returns whether the operation succeeded.
 */
 bool FileManager::saveFile( const DocLnk &f, const QByteArray &data )
 {
  QString fn = f.file() + ".new";
     ensurePathExists( fn );
     QFile fl( fn );
     if ( !fl.open( IO_WriteOnly|IO_Raw ) ) {
        qWarning("open failed");
        return FALSE;
     }
     int total_written = fl.writeBlock( data );
     fl.close();
     if ( total_written != int(data.size()) || !f.writeLink() ) {
   QFile::remove( fn );
   return FALSE;
     }
        qDebug("total written %d out of %d", total_written, data.size());
     // else 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 );
   // 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;
 }