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Diffstat (limited to 'src/qt3support/network/q3localfs.cpp')
| -rw-r--r-- | src/qt3support/network/q3localfs.cpp | 404 |
1 files changed, 404 insertions, 0 deletions
diff --git a/src/qt3support/network/q3localfs.cpp b/src/qt3support/network/q3localfs.cpp new file mode 100644 index 0000000..8dd6cd2 --- /dev/null +++ b/src/qt3support/network/q3localfs.cpp @@ -0,0 +1,404 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the Qt3Support module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "q3localfs.h" + +#ifndef QT_NO_NETWORKPROTOCOL + +#include "qfileinfo.h" +#include "qfile.h" +#include "q3url.h" +#include "qurlinfo.h" +#include "qapplication.h" +#include "q3urloperator.h" +#include "qpointer.h" +#include "q3valuelist.h" + +QT_BEGIN_NAMESPACE + +//#define QLOCALFS_DEBUG + + +/*! + \class Q3LocalFs + \brief The Q3LocalFs class is an implementation of a + QNetworkProtocol that works on the local file system. + + \compat + + This class is derived from QNetworkProtocol. Q3LocalFs is not + normally used directly, but rather through a QUrlOperator, for + example: + \snippet doc/src/snippets/code/src_qt3support_network_q3localfs.cpp 0 + + This code will only work if the Q3LocalFs class is registered; to + register the class, you must call qInitNetworkProtocols() before + using a QUrlOperator with Q3LocalFs. + + If you really need to use Q3LocalFs directly, don't forget + to set its QUrlOperator with setUrl(). + + \sa Q3NetworkProtocol, Q3UrlOperator +*/ + +/*! + Constructor. +*/ + +Q3LocalFs::Q3LocalFs() + : Q3NetworkProtocol() +{ +} + +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 Q3LocalFs::operationListChildren( Q3NetworkOperation *op ) +{ +#ifdef QLOCALFS_DEBUG + qDebug( "Q3LocalFs: 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; + } + + QFileInfoList filist = dir.entryInfoList(QDir::All | QDir::Hidden | QDir::System); + if ( filist.isEmpty() ) { + 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 ); + + Q3ValueList<QUrlInfo> infos; + for (int i = 0; i < filist.size(); ++i) { + QFileInfo fi = filist.at(i); + 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 Q3LocalFs::operationMkDir( Q3NetworkOperation *op ) +{ +#ifdef QLOCALFS_DEBUG + qDebug( "Q3LocalFs: 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 Q3LocalFs::operationRemove( Q3NetworkOperation *op ) +{ +#ifdef QLOCALFS_DEBUG + qDebug( "Q3LocalFs: operationRemove" ); +#endif + op->setState( StInProgress ); + QString name = Q3Url( 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 Q3LocalFs::operationRename( Q3NetworkOperation *op ) +{ +#ifdef QLOCALFS_DEBUG + qDebug( "Q3LocalFs: 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 Q3LocalFs::operationGet( Q3NetworkOperation *op ) +{ +#ifdef QLOCALFS_DEBUG + qDebug( "Q3LocalFs: operationGet" ); +#endif + op->setState( StInProgress ); + QString from = Q3Url( op->arg( 0 ) ).path(); + + QFile f( from ); + if ( !f.open( IO_ReadOnly ) ) { +#ifdef QLOCALFS_DEBUG + qDebug( "Q3LocalFs: 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( "Q3LocalFs: got all %d bytes at once", f.size() ); +#endif + } else { + s.resize( blockSize ); + int remaining = f.size(); + QPointer<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( "Q3LocalFs: 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 Q3LocalFs::operationPut( Q3NetworkOperation *op ) +{ +#ifdef QLOCALFS_DEBUG + qDebug( "Q3LocalFs: operationPut" ); +#endif + op->setState( StInProgress ); + QString to = Q3Url( 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; + QPointer<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 Q3LocalFs::supportedOperations() const +{ + return OpListChildren | OpMkDir | OpRemove | OpRename | OpGet | OpPut; +} + +/*! + \internal +*/ + +int Q3LocalFs::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; +} + +QT_END_NAMESPACE + +#endif // QT_NO_NETWORKPROTOCOL |