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koffice/lib/store/KoStore.cpp

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// -*- c-basic-offset: 2 -*-
/* This file is part of the KDE project
Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
Copyright (C) 2000-2002 David Faure <faure@kde.org>, Werner Trobin <trobin@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include "KoStore.h"
#include "KoTarStore.h"
#include "KoZipStore.h"
#include "KoDirectoryStore.h"
#include <tqfileinfo.h>
#include <tqfile.h>
#include <tqdir.h>
#include <kurl.h>
#include <kdebug.h>
#include <kdeversion.h>
#include <klocale.h>
#include <kmessagebox.h>
#include <kio/netaccess.h>
//#define DefaultFormat KoStore::Tar
#define DefaultFormat KoStore::Zip
const int KoStore::s_area = 30002;
KoStore::Backend KoStore::determineBackend( TQIODevice* dev )
{
unsigned char buf[5];
if ( dev->readBlock( (char *)buf, 4 ) < 4 )
return DefaultFormat; // will create a "bad" store (bad()==true)
if ( buf[0] == 0037 && buf[1] == 0213 ) // gzip -> tar.gz
return Tar;
if ( buf[0] == 'P' && buf[1] == 'K' && buf[2] == 3 && buf[3] == 4 )
return Zip;
return DefaultFormat; // fallback
}
KoStore* KoStore::createStore( const TQString& fileName, Mode mode, const TQCString & appIdentification, Backend backend )
{
if ( backend == Auto ) {
if ( mode == KoStore::Write )
backend = DefaultFormat;
else
{
TQFileInfo inf( fileName );
if ( inf.isDir() )
backend = Directory;
else
{
TQFile file( fileName );
if ( file.open( IO_ReadOnly ) )
backend = determineBackend( TQT_TQIODEVICE(&file) );
else
backend = DefaultFormat; // will create a "bad" store (bad()==true)
}
}
}
switch ( backend )
{
case Tar:
return new KoTarStore( fileName, mode, appIdentification );
case Zip:
return new KoZipStore( fileName, mode, appIdentification );
case Directory:
return new KoDirectoryStore( fileName /* should be a dir name.... */, mode );
default:
kdWarning(s_area) << "Unsupported backend requested for KoStore : " << backend << endl;
return 0L;
}
}
KoStore* KoStore::createStore( TQIODevice *device, Mode mode, const TQCString & appIdentification, Backend backend )
{
if ( backend == Auto )
{
if ( mode == KoStore::Write )
backend = DefaultFormat;
else {
if ( device->open( IO_ReadOnly ) ) {
backend = determineBackend( device );
device->close();
}
}
}
switch ( backend )
{
case Tar:
return new KoTarStore( device, mode, appIdentification );
case Directory:
kdError(s_area) << "Can't create a Directory store for a memory buffer!" << endl;
// fallback
case Zip:
return new KoZipStore( device, mode, appIdentification );
default:
kdWarning(s_area) << "Unsupported backend requested for KoStore : " << backend << endl;
return 0L;
}
}
KoStore* KoStore::createStore( TQWidget* window, const KURL& url, Mode mode, const TQCString & appIdentification, Backend backend )
{
if ( url.isLocalFile() )
return createStore(url.path(), mode, appIdentification, backend );
TQString tmpFile;
if ( mode == KoStore::Write )
{
if ( backend == Auto )
backend = DefaultFormat;
}
else
{
const bool downloaded =
KIO::NetAccess::download( url, tmpFile, window );
if (!downloaded)
{
kdError(s_area) << "Could not download file!" << endl;
backend = DefaultFormat; // will create a "bad" store (bad()==true)
}
else if ( backend == Auto )
{
TQFile file( tmpFile );
if ( file.open( IO_ReadOnly ) )
{
backend = determineBackend( TQT_TQIODEVICE(&file) );
file.close();
}
}
}
switch ( backend )
{
case Tar:
return new KoTarStore( window, url, tmpFile, mode, appIdentification );
case Zip:
return new KoZipStore( window, url, tmpFile, mode, appIdentification );
default:
kdWarning(s_area) << "Unsupported backend requested for KoStore (KURL) : " << backend << endl;
KMessageBox::sorry( window,
i18n("The directory mode is not supported for remote locations."),
i18n("KOffice Storage"));
return 0L;
}
}
namespace {
const char* const ROOTPART = "root";
const char* const MAINNAME = "maindoc.xml";
}
bool KoStore::init( Mode _mode )
{
d = 0;
m_bIsOpen = false;
m_mode = _mode;
m_stream = 0;
// Assume new style names.
m_namingVersion = NAMING_VERSION_2_2;
return true;
}
KoStore::~KoStore()
{
delete m_stream;
}
bool KoStore::open( const TQString & _name )
{
// This also converts from relative to absolute, i.e. merges the currentPath()
m_sName = toExternalNaming( _name );
if ( m_bIsOpen )
{
kdWarning(s_area) << "KoStore: File is already opened" << endl;
//return KIO::ERR_INTERNAL;
return false;
}
if ( m_sName.length() > 512 )
{
kdError(s_area) << "KoStore: Filename " << m_sName << " is too long" << endl;
//return KIO::ERR_MALFORMED_URL;
return false;
}
if ( m_mode == Write )
{
kdDebug(s_area) << "KoStore: opening for writing '" << m_sName << "'" << endl;
if ( m_strFiles.findIndex( m_sName ) != -1 ) // just check if it's there
{
kdWarning(s_area) << "KoStore: Duplicate filename " << m_sName << endl;
//return KIO::ERR_FILE_ALREADY_EXIST;
return false;
}
m_strFiles.append( m_sName );
m_iSize = 0;
if ( !openWrite( m_sName ) )
return false;
}
else if ( m_mode == Read )
{
kdDebug(s_area) << "Opening for reading '" << m_sName << "'" << endl;
if ( !openRead( m_sName ) )
return false;
}
else
//return KIO::ERR_UNSUPPORTED_ACTION;
return false;
m_bIsOpen = true;
return true;
}
bool KoStore::isOpen() const
{
return m_bIsOpen;
}
bool KoStore::close()
{
kdDebug(s_area) << "KoStore: Closing" << endl;
if ( !m_bIsOpen )
{
kdWarning(s_area) << "KoStore: You must open before closing" << endl;
//return KIO::ERR_INTERNAL;
return false;
}
bool ret = m_mode == Write ? closeWrite() : closeRead();
delete m_stream;
m_stream = 0L;
m_bIsOpen = false;
return ret;
}
TQIODevice* KoStore::device() const
{
if ( !m_bIsOpen )
kdWarning(s_area) << "KoStore: You must open before asking for a device" << endl;
if ( m_mode != Read )
kdWarning(s_area) << "KoStore: Can not get device from store that is opened for writing" << endl;
return m_stream;
}
TQByteArray KoStore::read( unsigned long int max )
{
TQByteArray data; // Data is a TQArray<char>
if ( !m_bIsOpen )
{
kdWarning(s_area) << "KoStore: You must open before reading" << endl;
data.resize( 0 );
return data;
}
if ( m_mode != Read )
{
kdError(s_area) << "KoStore: Can not read from store that is opened for writing" << endl;
data.resize( 0 );
return data;
}
if ( m_stream->atEnd() )
{
data.resize( 0 );
return data;
}
if ( max > m_iSize - m_stream->at() )
max = m_iSize - m_stream->at();
if ( max == 0 )
{
data.resize( 0 );
return data;
}
char *p = new char[ max ];
m_stream->readBlock( p, max );
data.setRawData( p, max );
return data;
}
TQ_LONG KoStore::write( const TQByteArray& data )
{
return write( data.data(), data.size() ); // see below
}
TQ_LONG KoStore::read( char *_buffer, TQ_ULONG _len )
{
if ( !m_bIsOpen )
{
kdError(s_area) << "KoStore: You must open before reading" << endl;
return -1;
}
if ( m_mode != Read )
{
kdError(s_area) << "KoStore: Can not read from store that is opened for writing" << endl;
return -1;
}
if ( m_stream->atEnd() )
return 0;
if ( _len > m_iSize - m_stream->at() )
_len = m_iSize - m_stream->at();
if ( _len == 0 )
return 0;
return m_stream->readBlock( _buffer, _len );
}
TQ_LONG KoStore::write( const char* _data, TQ_ULONG _len )
{
if ( _len == 0L ) return 0;
if ( !m_bIsOpen )
{
kdError(s_area) << "KoStore: You must open before writing" << endl;
return 0L;
}
if ( m_mode != Write )
{
kdError(s_area) << "KoStore: Can not write to store that is opened for reading" << endl;
return 0L;
}
int nwritten = m_stream->writeBlock( _data, _len );
Q_ASSERT( nwritten == (int)_len );
m_iSize += nwritten;
return nwritten;
}
TQIODevice::Offset KoStore::size() const
{
if ( !m_bIsOpen )
{
kdWarning(s_area) << "KoStore: You must open before asking for a size" << endl;
return static_cast<TQIODevice::Offset>(-1);
}
if ( m_mode != Read )
{
kdWarning(s_area) << "KoStore: Can not get size from store that is opened for writing" << endl;
return static_cast<TQIODevice::Offset>(-1);
}
return m_iSize;
}
bool KoStore::enterDirectory( const TQString& directory )
{
//kdDebug(s_area) << "KoStore::enterDirectory " << directory << endl;
int pos;
bool success = true;
TQString tmp( directory );
while ( ( pos = tmp.find( '/' ) ) != -1 &&
( success = enterDirectoryInternal( tmp.left( pos ) ) ) )
tmp = tmp.mid( pos + 1 );
if ( success && !tmp.isEmpty() )
return enterDirectoryInternal( tmp );
return success;
}
bool KoStore::leaveDirectory()
{
if ( m_currentPath.isEmpty() )
return false;
m_currentPath.pop_back();
return enterAbsoluteDirectory( expandEncodedDirectory( currentPath() ) );
}
TQString KoStore::currentDirectory() const
{
return expandEncodedDirectory( currentPath() );
}
TQString KoStore::currentPath() const
{
TQString path;
TQStringList::ConstIterator it = m_currentPath.begin();
TQStringList::ConstIterator end = m_currentPath.end();
for ( ; it != end; ++it ) {
path += *it;
path += '/';
}
return path;
}
void KoStore::pushDirectory()
{
m_directoryStack.push( currentPath() );
}
void KoStore::popDirectory()
{
m_currentPath.clear();
enterAbsoluteDirectory( TQString() );
enterDirectory( m_directoryStack.pop() );
}
bool KoStore::addLocalFile( const TQString &fileName, const TQString &destName )
{
TQFileInfo fi( fileName );
uint size = fi.size();
TQFile file( fileName );
if ( !file.open( IO_ReadOnly ))
{
return false;
}
if ( !open ( destName ) )
{
return false;
}
TQByteArray data ( 8 * 1024 );
uint total = 0;
for ( int block = 0; ( block = file.readBlock ( data.data(), data.size() ) ) > 0; total += block )
{
data.resize(block);
if ( write( data ) != block )
return false;
data.resize(8*1024);
}
Q_ASSERT( total == size );
close();
file.close();
return true;
}
bool KoStore::extractFile ( const TQString &srcName, const TQString &fileName )
{
if ( !open ( srcName ) )
return false;
TQFile file( fileName );
if( !file.open ( IO_WriteOnly ) )
{
close();
return false;
}
TQByteArray data ( 8 * 1024 );
uint total = 0;
for( int block = 0; ( block = read ( data.data(), data.size() ) ) > 0; total += block )
{
file.writeBlock ( data.data(), block );
}
if( size() != static_cast<TQIODevice::Offset>(-1) )
Q_ASSERT( total == size() );
file.close();
close();
return true;
}
TQStringList KoStore::addLocalDirectory( const TQString &dirPath, const TQString &destName )
{
TQString dot = ".";
TQString dotdot = "..";
TQStringList content;
TQDir dir(dirPath);
if ( !dir.exists() )
return 0;
TQStringList files = dir.entryList();
for ( TQStringList::Iterator it = files.begin(); it != files.end(); ++it )
{
if ( *it != dot && *it != dotdot )
{
TQString currentFile = dirPath + "/" + *it;
TQString dest = destName.isEmpty() ? *it : (destName + "/" + *it);
TQFileInfo fi ( currentFile );
if ( fi.isFile() )
{
addLocalFile ( currentFile, dest );
content.append(dest);
}
else if ( fi.isDir() )
{
content += addLocalDirectory ( currentFile, dest );
}
}
}
return content;
}
bool KoStore::at( TQIODevice::Offset pos )
{
return m_stream->at( pos );
}
TQIODevice::Offset KoStore::at() const
{
return m_stream->at();
}
bool KoStore::atEnd() const
{
return m_stream->atEnd();
}
// See the specification for details of what this function does.
TQString KoStore::toExternalNaming( const TQString & _internalNaming ) const
{
if ( _internalNaming == ROOTPART )
return expandEncodedDirectory( currentPath() ) + MAINNAME;
TQString intern;
if ( _internalNaming.startsWith( "tar:/" ) ) // absolute reference
intern = _internalNaming.mid( 5 ); // remove protocol
else
intern = currentPath() + _internalNaming;
return expandEncodedPath( intern );
}
TQString KoStore::expandEncodedPath( TQString intern ) const
{
if ( m_namingVersion == NAMING_VERSION_RAW )
return intern;
TQString result;
int pos;
if ( ( pos = intern.findRev( '/', -1 ) ) != -1 ) {
result = expandEncodedDirectory( intern.left( pos ) ) + '/';
intern = intern.mid( pos + 1 );
}
// Now process the filename. If the first character is numeric, we have
// a main document.
if ( TQChar(intern.at(0)).isDigit() )
{
// If this is the first part name, check if we have a store with
// old-style names.
if ( ( m_namingVersion == NAMING_VERSION_2_2 ) &&
( m_mode == Read ) &&
( fileExists( result + "part" + intern + ".xml" ) ) )
m_namingVersion = NAMING_VERSION_2_1;
if ( m_namingVersion == NAMING_VERSION_2_1 )
result = result + "part" + intern + ".xml";
else
result = result + "part" + intern + "/" + MAINNAME;
}
else
result += intern;
return result;
}
TQString KoStore::expandEncodedDirectory( TQString intern ) const
{
if ( m_namingVersion == NAMING_VERSION_RAW )
return intern;
TQString result;
int pos;
while ( ( pos = intern.find( '/' ) ) != -1 ) {
if ( TQChar(intern.at(0)).isDigit() )
result += "part";
result += intern.left( pos + 1 ); // copy numbers (or "pictures") + "/"
intern = intern.mid( pos + 1 ); // remove the dir we just processed
}
if ( TQChar(intern.at(0)).isDigit() )
result += "part";
result += intern;
return result;
}
bool KoStore::enterDirectoryInternal( const TQString& directory )
{
if ( enterRelativeDirectory( expandEncodedDirectory( directory ) ) )
{
m_currentPath.append( directory );
return true;
}
return false;
}
void KoStore::disallowNameExpansion( void )
{
m_namingVersion = NAMING_VERSION_RAW;
}
bool KoStore::hasFile( const TQString& fileName ) const
{
return fileExists( toExternalNaming( currentPath() + fileName ) );
}
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