Add Qt3 development HEAD version

1 files changed, 407 insertions, 0 deletions

diff --git a/src/kernel/qlocalfs.cpp b/src/kernel/qlocalfs.cpp
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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 sales@trolltech.com.
+**
+** 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 qInitNetworkProtocols() 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
+    qDebug( "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
+    qDebug( "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
+    qDebug( "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
+    qDebug( "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
+    qDebug( "QLocalFs: operationGet" );
+#endif
+    op->setState( StInProgress );
+    QString from = QUrl( op->arg( 0 ) ).path();
+
+    QFile f( from );
+    if ( !f.open( IO_ReadOnly ) ) {
+#ifdef QLOCALFS_DEBUG
+	qDebug( "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
+	    qDebug( "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
+	    qDebug( "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
+    qDebug( "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