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/****************************************************************************
**
** Implementation of QLocalFs class
**
** Created : 950429
**
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
**
** This file is part of the kernel module of the Qt GUI Toolkit.
**
** This file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the files LICENSE.GPL2
** and LICENSE.GPL3 included in the packaging of this file.
** Alternatively you may (at your option) use any later version
** of the GNU General Public License if such license has been
** publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free Qt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at [email protected].
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.QPL
** included in the packaging of this file. Licensees holding valid Qt
** Commercial 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 WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/
#include "qlocalfs.h"
#ifndef QT_NO_NETWORKPROTOCOL
#include "qfileinfo.h"
#include "qfile.h"
#include "qurlinfo.h"
#include "qapplication.h"
#include "qurloperator.h"
#include "qguardedptr.h"
//#define QLOCALFS_DEBUG
/*!
\class QLocalFs qlocalfs.h
\brief The QLocalFs class is an implementation of a
QNetworkProtocol that works on the local file system.
\if defined(commercial)
It is part of the <a href="commercialeditions.html">Qt Enterprise Edition</a>.
\endif
\module network
\ingroup io
This class is derived from QNetworkProtocol. QLocalFs is not
normally used directly, but rather through a QUrlOperator, for
example:
\code
QUrlOperator op( "file:///tmp" );
op.listChildren(); // Asks the server to provide a directory listing
\endcode
This code will only work if the QLocalFs class is registered; to
register the class, you must call tqInitNetworkProtocols() before
using a QUrlOperator with QLocalFs.
If you really need to use QLocalFs directly, don't forget
to set its QUrlOperator with setUrl().
\sa \link network.html Qt Network Documentation \endlink QNetworkProtocol, QUrlOperator
*/
/*!
Constructor.
*/
QLocalFs::QLocalFs()
: QNetworkProtocol()
{
}
static int convertPermissions(QFileInfo *fi)
{
int p = 0;
if ( fi->permission( QFileInfo::ReadOwner ) )
p |= QUrlInfo::ReadOwner;
if ( fi->permission( QFileInfo::WriteOwner ) )
p |= QUrlInfo::WriteOwner;
if ( fi->permission( QFileInfo::ExeOwner ) )
p |= QUrlInfo::ExeOwner;
if ( fi->permission( QFileInfo::ReadGroup ) )
p |= QUrlInfo::ReadGroup;
if ( fi->permission( QFileInfo::WriteGroup ) )
p |= QUrlInfo::WriteGroup;
if ( fi->permission( QFileInfo::ExeGroup ) )
p |= QUrlInfo::ExeGroup;
if ( fi->permission( QFileInfo::ReadOther ) )
p |= QUrlInfo::ReadOther;
if ( fi->permission( QFileInfo::WriteOther ) )
p |= QUrlInfo::WriteOther;
if ( fi->permission( QFileInfo::ExeOther ) )
p |= QUrlInfo::ExeOther;
return p;
}
/*!
\reimp
*/
void QLocalFs::operationListChildren( QNetworkOperation *op )
{
#ifdef QLOCALFS_DEBUG
tqDebug( "QLocalFs: operationListChildren" );
#endif
op->setState( StInProgress );
dir = QDir( url()->path() );
dir.setNameFilter( url()->nameFilter() );
dir.setMatchAllDirs( TRUE );
if ( !dir.isReadable() ) {
QString msg = tr( "Could not read directory\n%1" ).arg( url()->path() );
op->setState( StFailed );
op->setProtocolDetail( msg );
op->setErrorCode( (int)ErrListChildren );
emit finished( op );
return;
}
const QFileInfoList *filist = dir.entryInfoList( QDir::All | QDir::Hidden | QDir::System );
if ( !filist ) {
QString msg = tr( "Could not read directory\n%1" ).arg( url()->path() );
op->setState( StFailed );
op->setProtocolDetail( msg );
op->setErrorCode( (int)ErrListChildren );
emit finished( op );
return;
}
emit start( op );
QFileInfoListIterator it( *filist );
QFileInfo *fi;
QValueList<QUrlInfo> infos;
while ( ( fi = it.current() ) != 0 ) {
++it;
infos << QUrlInfo( fi->fileName(), convertPermissions(fi), fi->owner(), fi->group(),
fi->size(), fi->lastModified(), fi->lastRead(), fi->isDir(), fi->isFile(),
fi->isSymLink(), fi->isWritable(), fi->isReadable(), fi->isExecutable() );
}
emit newChildren( infos, op );
op->setState( StDone );
emit finished( op );
}
/*!
\reimp
*/
void QLocalFs::operationMkDir( QNetworkOperation *op )
{
#ifdef QLOCALFS_DEBUG
tqDebug( "QLocalFs: operationMkDir" );
#endif
op->setState( StInProgress );
QString dirname = op->arg( 0 );
dir = QDir( url()->path() );
if ( dir.mkdir( dirname ) ) {
QFileInfo fi( dir, dirname );
QUrlInfo inf( fi.fileName(), convertPermissions(&fi), fi.owner(), fi.group(),
fi.size(), fi.lastModified(), fi.lastRead(), fi.isDir(), fi.isFile(),
fi.isSymLink(), fi.isWritable(), fi.isReadable(), fi.isExecutable() );
emit newChild( inf, op );
op->setState( StDone );
emit createdDirectory( inf, op );
emit finished( op );
} else {
QString msg = tr( "Could not create directory\n%1" ).arg( dirname );
op->setState( StFailed );
op->setProtocolDetail( msg );
op->setErrorCode( (int)ErrMkDir );
emit finished( op );
}
}
/*!
\reimp
*/
void QLocalFs::operationRemove( QNetworkOperation *op )
{
#ifdef QLOCALFS_DEBUG
tqDebug( "QLocalFs: operationRemove" );
#endif
op->setState( StInProgress );
QString name = QUrl( op->arg( 0 ) ).path();
bool deleted = FALSE;
dir = QDir( url()->path() );
QFileInfo fi( dir, name );
if ( fi.isDir() ) {
if ( dir.rmdir( name ) )
deleted = TRUE;
}
if ( deleted || dir.remove( name ) ) {
op->setState( StDone );
emit removed( op );
emit finished( op );
} else {
QString msg = tr( "Could not remove file or directory\n%1" ).arg( name );
op->setState( StFailed );
op->setProtocolDetail( msg );
op->setErrorCode( (int)ErrRemove );
emit finished( op );
}
}
/*!
\reimp
*/
void QLocalFs::operationRename( QNetworkOperation *op )
{
#ifdef QLOCALFS_DEBUG
tqDebug( "QLocalFs: operationRename" );
#endif
op->setState( StInProgress );
QString oldname = op->arg( 0 );
QString newname = op->arg( 1 );
dir = QDir( url()->path() );
if ( dir.rename( oldname, newname ) ) {
op->setState( StDone );
emit itemChanged( op );
emit finished( op );
} else {
QString msg = tr( "Could not rename\n%1\nto\n%2" ).arg( oldname ).arg( newname );
op->setState( StFailed );
op->setProtocolDetail( msg );
op->setErrorCode( (int)ErrRename );
emit finished( op );
}
}
/*!
\reimp
*/
void QLocalFs::operationGet( QNetworkOperation *op )
{
#ifdef QLOCALFS_DEBUG
tqDebug( "QLocalFs: operationGet" );
#endif
op->setState( StInProgress );
QString from = QUrl( op->arg( 0 ) ).path();
QFile f( from );
if ( !f.open( IO_ReadOnly ) ) {
#ifdef QLOCALFS_DEBUG
tqDebug( "QLocalFs: could not open %s", from.latin1() );
#endif
QString msg = tr( "Could not open\n%1" ).arg( from );
op->setState( StFailed );
op->setProtocolDetail( msg );
op->setErrorCode( (int)ErrGet );
emit finished( op );
return;
}
QByteArray s;
emit dataTransferProgress( 0, f.size(), op );
if ( f.size() != 0 ) {
int blockSize = calcBlockSize( f.size() );
if ( (int)f.size() < blockSize ) {
s.resize( f.size() );
f.readBlock( s.data(), f.size() );
emit data( s, op );
emit dataTransferProgress( f.size(), f.size(), op );
#ifdef QLOCALFS_DEBUG
tqDebug( "QLocalFs: got all %d bytes at once", f.size() );
#endif
} else {
s.resize( blockSize );
int remaining = f.size();
QGuardedPtr<QObject> that = this;
while ( that && remaining > 0 ) {
if ( operationInProgress() != op )
return;
if ( remaining >= blockSize ) {
f.readBlock( s.data(), blockSize );
emit data( s, op );
emit dataTransferProgress( f.size() - remaining, f.size(), op );
remaining -= blockSize;
} else {
s.resize( remaining );
f.readBlock( s.data(), remaining );
emit data( s, op );
emit dataTransferProgress( f.size() - remaining, f.size(), op );
remaining -= remaining;
}
qApp->processEvents();
}
if (!that)
return;
#ifdef QLOCALFS_DEBUG
tqDebug( "QLocalFs: got all %d bytes step by step", f.size() );
#endif
emit dataTransferProgress( f.size(), f.size(), op );
}
}
op->setState( StDone );
f.close();
emit finished( op );
}
/*!
\reimp
*/
void QLocalFs::operationPut( QNetworkOperation *op )
{
#ifdef QLOCALFS_DEBUG
tqDebug( "QLocalFs: operationPut" );
#endif
op->setState( StInProgress );
QString to = QUrl( op->arg( 0 ) ).path();
QFile f( to );
if ( !f.open( IO_WriteOnly ) ) {
QString msg = tr( "Could not write\n%1" ).arg( to );
op->setState( StFailed );
op->setProtocolDetail( msg );
op->setErrorCode( (int)ErrPut );
emit finished( op );
return;
}
QByteArray ba( op->rawArg( 1 ) );
emit dataTransferProgress( 0, ba.size(), op );
int blockSize = calcBlockSize( ba.size() );
if ( (int)ba.size() < blockSize ) {
f.writeBlock( ba.data(), ba.size() );
emit dataTransferProgress( ba.size(), ba.size(), op );
} else {
int i = 0;
while ( i + blockSize < (int)ba.size() - 1 ) {
if ( operationInProgress() != op )
return;
f.writeBlock( &ba.data()[ i ], blockSize );
f.flush();
emit dataTransferProgress( i + blockSize, ba.size(), op );
i += blockSize;
QGuardedPtr<QObject> that = this;
qApp->processEvents();
if (!that)
return;
}
if ( i < (int)ba.size() - 1 )
f.writeBlock( &ba.data()[ i ], ba.size() - i );
emit dataTransferProgress( ba.size(), ba.size(), op );
}
op->setState( StDone );
f.close();
emit finished( op );
}
/*!
\reimp
*/
int QLocalFs::supportedOperations() const
{
return OpListChildren | OpMkDir | OpRemove | OpRename | OpGet | OpPut;
}
/*!
\internal
*/
int QLocalFs::calcBlockSize( int totalSize ) const
{
if ( totalSize == 0 )
return 1024;
int s = totalSize / 100;
// we want a block size between 1KB and 1MB
if ( s < 1024 )
s = 1024;
if ( s > 1048576 )
s = 1048576;
return s;
}
#endif // QT_NO_NETWORKPROTOCOL
|