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/* This file is part of KBabel
   based Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
			2002	Stanislav Visnovsky <visnovsky@kde.org>
			2003	Dwayne Bailey <dwayne@translate.org.za>

   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.

   In addition, as a special exception, the copyright holders give
   permission to link the code of this program with any edition of
   the TQt library by Trolltech AS, Norway (or with modified versions
   of TQt that use the same license as TQt), and distribute linked
   combinations including the two.  You must obey the GNU General
   Public License in all respects for all of the code used other than
   TQt. If you modify this file, you may extend this exception to
   your version of the file, but you are not obligated to do so.  If
   you do not wish to do so, delete this exception statement from
   your version.
   
*/

#include <resources.h>
#include "catalog.h"
#include "catalogitem.h"
#include "catalogsettings.h"
#include "main.h"
#include <math.h>

#include <kconfig.h>
#include <kdebug.h>
#include <kgenericfactory.h>
#include <klibloader.h>
#include <klocale.h>
#include <kmessagebox.h>

/***************************************************
 *
 * Factory
 *
 ***************************************************/

K_EXPORT_COMPONENT_FACTORY( kbabel_lengthtool, KGenericFactory<LengthTool> ( "kbabeldatatool" ) )

using namespace KBabel;

LengthTool::LengthTool( TQObject* tqparent, const char* name, const TQStringList & )
    : KDataTool( tqparent, name ), _cache_origin( 0 )
{
    i18n("which check found errors","translation has inconsistent length");
}

bool LengthTool::run( const TQString& command, void* data, const TQString& datatype, const TQString& mimetype )
{

    if ( command != "validate" )
    {
	kdDebug(KBABEL) << "Length Tool only accepts the 'validate' command" << endl;
	kdDebug(KBABEL) << "   The command " << command << " is not accepted" << endl;
	return false;
    }

    // Check wether we can accept the data
    if ( datatype != "CatalogItem" )
    {
	kdDebug(KBABEL) << "Length Tool only accept the CatalogItem datatype" << endl;
	return false;
    }

    if ( mimetype != "application/x-kbabel-catalogitem" )
    {
	kdDebug(KBABEL) << "Length Tool only accept the 'application/x-kbabel-catalogitem' mimetype" << endl;
	return false;
    }

    if( command == "validate" )
    {

	CatalogItem* item = (CatalogItem*)(data);
	bool hasError = false;
	TQStringList str, id;

	if(!item->isUntranslated()) {
	
		if( _cache_origin != item->project() )
		{
		    _context = item->project()->miscSettings().contextInfo;
		    _plurals = item->project()->miscSettings().singularPlural;
		    _cache_origin = item->project();
		}

		//Ensure KDE plural forms are in a StringList
		if( item->pluralForm() == KDESpecific ) {
			str = TQStringList::split( "\\n", item->msgstr().first(), true );
			id = TQStringList::split( "\\n",
					item->msgid().first().tqreplace( TQRegExp(_plurals), ""), true );
		} else {
			str = item->msgstr();
			id = item->msgid();
		}

		//Check for translations that are too short or too long
		//This may not be totally correct but we check both
		//the singular and plural forms against each translated plural.
		//FIXME: tqreplace 10% check with configurable setting or a statistical
		//based expected length relationship
		int idlen, strlen;
		for( TQStringList::Iterator i = id.begin() ; i != id.end() ; i++ ) {
			TQString iditem = (*i);
			idlen = iditem.tqreplace( TQRegExp(_context),"").length();
			for( TQStringList::Iterator j = str.begin() ; j != str.end() ; j++ ) {
				TQString stritem = (*j);
				strlen = stritem.length();
				hasError = hasError || (strlen < (0.1 * idlen))
						|| (strlen > (10 * idlen));
			}
		}

	}

	if(hasError)
	    item->appendError( "translation has inconsistant length" );
	else
	    item->removeError( "translation has inconsistant length" );

	return !hasError;
    }
    return false;
}

#include "main.moc"