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tdelibs/tdeabc/plugins/file/resourcefile.cpp

396 lines
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/*
This file is part of libtdeabc.
Copyright (c) 2001,2003 Cornelius Schumacher <schumacher@kde.org>
Copyright (c) 2006 Tom Abers <tomalbers@kde.nl>
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 <signal.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <tqfile.h>
#include <tqfileinfo.h>
#include <tqtimer.h>
#include <tdeapplication.h>
#include <tdeconfig.h>
#include <kdebug.h>
#include <tdeio/scheduler.h>
#include <tdelocale.h>
#include <ksavefile.h>
#include <kstandarddirs.h>
#include "formatfactory.h"
#include "resourcefileconfig.h"
#include "stdaddressbook.h"
#include "lock.h"
#include "resourcefile.h"
using namespace TDEABC;
ResourceFile::ResourceFile( const TDEConfig *config )
: Resource( config ), mFormat( 0 ),
mAsynchronous( false )
{
TQString fileName, formatName;
if ( config ) {
fileName = config->readPathEntry( "FileName", StdAddressBook::fileName() );
formatName = config->readEntry( "FileFormat", "vcard" );
} else {
fileName = StdAddressBook::fileName();
formatName = "vcard";
}
init( fileName, formatName );
}
ResourceFile::ResourceFile( const TQString &fileName,
const TQString &formatName )
: Resource( 0 ), mFormat( 0 ),
mAsynchronous( false )
{
init( fileName, formatName );
}
void ResourceFile::init( const TQString &fileName, const TQString &formatName )
{
mFormatName = formatName;
FormatFactory *factory = FormatFactory::self();
mFormat = factory->format( mFormatName );
if ( !mFormat ) {
mFormatName = "vcard";
mFormat = factory->format( mFormatName );
}
connect( &mDirWatch, TQT_SIGNAL( dirty(const TQString&) ), TQT_SLOT( fileChanged() ) );
connect( &mDirWatch, TQT_SIGNAL( created(const TQString&) ), TQT_SLOT( fileChanged() ) );
connect( &mDirWatch, TQT_SIGNAL( deleted(const TQString&) ), TQT_SLOT( fileChanged() ) );
setFileName( fileName );
mLock = 0;
}
ResourceFile::~ResourceFile()
{
delete mFormat;
mFormat = 0;
}
void ResourceFile::writeConfig( TDEConfig *config )
{
Resource::writeConfig( config );
if ( mFileName == StdAddressBook::fileName() )
config->deleteEntry( "FileName" );
else
config->writePathEntry( "FileName", mFileName );
config->writeEntry( "FileFormat", mFormatName );
}
Ticket *ResourceFile::requestSaveTicket()
{
kdDebug(5700) << "ResourceFile::requestSaveTicket()" << endl;
if ( !addressBook() ) return 0;
delete mLock;
mLock = new Lock( mFileName );
if ( mLock->lock() ) {
addressBook()->emitAddressBookLocked();
} else {
addressBook()->error( mLock->error() );
kdDebug(5700) << "ResourceFile::requestSaveTicket(): Unable to lock file '"
<< mFileName << "': " << mLock->error() << endl;
return 0;
}
return createTicket( this );
}
void ResourceFile::releaseSaveTicket( Ticket *ticket )
{
delete ticket;
delete mLock;
mLock = 0;
addressBook()->emitAddressBookUnlocked();
}
bool ResourceFile::doOpen()
{
TQFile file( mFileName );
if ( !file.exists() ) {
// try to create the file
bool ok = file.open( IO_WriteOnly );
if ( ok )
file.close();
return ok;
} else {
TQFileInfo fileInfo( mFileName );
if ( readOnly() || !fileInfo.isWritable() ) {
if ( !file.open( IO_ReadOnly ) )
return false;
} else {
if ( !file.open( IO_ReadWrite ) )
return false;
}
if ( file.size() == 0 ) {
file.close();
kdDebug() << "File size is zero. Evaluating backups" << endl;
for (int i=0; i!=20; i++)
{
TQFile backup( mFileName + "__" + TQString::number(i) );
kdDebug() << "Evaluating" << backup.name() << " size: " << backup.size() << endl;
if ( backup.size() != 0 )
{
kdDebug() << "Restoring backup " << i << endl;
const TQString src = mFileName + "__" + TQString::number(i);
const TQString dest = mFileName;
// remove dest
TQFile::remove( dest );
// copy src to dest
if ( backup.open( IO_ReadOnly ) ) {
const TQByteArray data = backup.readAll();
TQFile out( dest );
if ( out.open( IO_WriteOnly ) ) {
out.writeBlock( data );
out.close();
}
backup.close();
}
return true;
}
}
return true;
}
bool ok = mFormat->checkFormat( &file );
file.close();
return ok;
}
}
void ResourceFile::doClose()
{
}
bool ResourceFile::load()
{
kdDebug(5700) << "ResourceFile::load(): '" << mFileName << "'" << endl;
mAsynchronous = false;
TQFile file( mFileName );
if ( !file.open( IO_ReadOnly ) ) {
addressBook()->error( i18n( "Unable to open file '%1'." ).arg( mFileName ) );
return false;
}
clear();
return mFormat->loadAll( addressBook(), this, &file );
}
bool ResourceFile::asyncLoad()
{
kdDebug(5700) << "ResourceFile::asyncLoad()" << endl;
mAsynchronous = true;
bool ok = load();
if ( !ok )
emitLoadingError();
else
emitLoadingFinished();
return true;
}
bool ResourceFile::save( Ticket * )
{
kdDebug(5700) << "ResourceFile::save()" << endl;
// Only do the logrotate dance when the __0 file is not 0 bytes.
TQFile file( mFileName + "__0" );
if ( file.size() != 0 ) {
const TQString last = mFileName + "__20";
kdDebug() << "deleting " << last << endl;
TQFile::remove( last );
for (int i=19; i>=0; i--)
{
const TQString src = mFileName + "__" + TQString::number(i);
const TQString dest = mFileName + "__" + TQString::number(i+1);
kdDebug() << "moving " << src << " -> " << dest << endl;
// copy src to dest
TQFile in( src );
if ( in.open( IO_ReadOnly ) ) {
const TQByteArray data = in.readAll();
TQFile out( dest );
if ( out.open( IO_WriteOnly ) ) {
out.writeBlock( data );
out.close();
}
in.close();
}
// remove src
TQFile::remove( src );
}
} else
kdDebug() << "Not starting logrotate __0 is 0 bytes." << endl;
TQString extension = "__0";
(void) KSaveFile::backupFile( mFileName, TQString::null /*directory*/,
extension );
mDirWatch.stopScan();
KSaveFile saveFile( mFileName );
bool ok = false;
if ( saveFile.status() == 0 && saveFile.file() ) {
mFormat->saveAll( addressBook(), this, saveFile.file() );
ok = saveFile.close();
}
if ( !ok ) {
saveFile.abort();
addressBook()->error( i18n( "Unable to save file '%1'." ).arg( mFileName ) );
}
mDirWatch.startScan();
return ok;
}
bool ResourceFile::asyncSave( Ticket *ticket )
{
kdDebug(5700) << "ResourceFile::asyncSave()" << endl;
bool ok = save( ticket );
if ( !ok )
TQTimer::singleShot( 0, this, TQT_SLOT( emitSavingError() ) );
else
TQTimer::singleShot( 0, this, TQT_SLOT( emitSavingFinished() ) );
return ok;
}
void ResourceFile::setFileName( const TQString &fileName )
{
mDirWatch.stopScan();
if ( mDirWatch.contains( mFileName ) )
mDirWatch.removeFile( mFileName );
mFileName = fileName;
mDirWatch.addFile( mFileName );
mDirWatch.startScan();
}
TQString ResourceFile::fileName() const
{
return mFileName;
}
void ResourceFile::setFormat( const TQString &format )
{
mFormatName = format;
delete mFormat;
FormatFactory *factory = FormatFactory::self();
mFormat = factory->format( mFormatName );
}
TQString ResourceFile::format() const
{
return mFormatName;
}
void ResourceFile::fileChanged()
{
kdDebug(5700) << "ResourceFile::fileChanged(): " << mFileName << endl;
if ( !addressBook() )
return;
if ( mAsynchronous )
asyncLoad();
else {
load();
kdDebug() << "addressBookChanged() " << endl;
addressBook()->emitAddressBookChanged();
}
}
void ResourceFile::removeAddressee( const Addressee &addr )
{
TQFile::remove( TQFile::encodeName( locateLocal( "data", "tdeabc/photos/" ) + addr.uid() ) );
TQFile::remove( TQFile::encodeName( locateLocal( "data", "tdeabc/logos/" ) + addr.uid() ) );
TQFile::remove( TQFile::encodeName( locateLocal( "data", "tdeabc/sounds/" ) + addr.uid() ) );
mAddrMap.erase( addr.uid() );
}
void ResourceFile::emitSavingFinished()
{
emit savingFinished( this );
}
void ResourceFile::emitSavingError()
{
emit savingError( this, i18n( "Unable to save file '%1'." ).arg( mFileName ) );
}
void ResourceFile::emitLoadingFinished()
{
emit loadingFinished( this );
}
void ResourceFile::emitLoadingError()
{
emit loadingError( this, i18n( "Problems during parsing file '%1'." ).arg( mFileName ) );
}
#include "resourcefile.moc"