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/* This file is part of Strigi Desktop Search, ported from code of:
* Copyright (C) 2007 Shane Wright <me@shanewright.co.uk>
* Matthias Lechner <matthias@lmme.de>
*
* Copyright (C) 2007 Flavio Castelli <flavio.castelli@gmail.com>
*
* 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 "icothroughanalyzer.h"
#include <strigi/textutils.h>
#include <strigi/strigiconfig.h>
#include <strigi/analysisresult.h>
#include <strigi/fieldtypes.h>
#include <cstring>
using namespace std;
using namespace Strigi;
// AnalyzerFactory
void
IcoThroughAnalyzerFactory::registerFields(FieldRegister& reg) {
widthField = reg.registerField(
"http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#width");
heightField = reg.registerField(
"http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#height");
numberField = reg.registerField(
"http://strigi.sf.net/ontologies/homeless#documentImageCount");
bitsPerPixelField = reg.registerField(
"http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#colorDepth");
colorCountField = reg.registerField(
"http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#colorCount");
typeField = reg.typeField;
addField(widthField);
addField(heightField);
addField(numberField);
addField(bitsPerPixelField);
addField(colorCountField);
addField(typeField);
}
// Analyzer
void
IcoThroughAnalyzer::setIndexable(AnalysisResult* i) {
analysisResult = i;
}
InputStream*
IcoThroughAnalyzer::connectInputStream(InputStream* in) {
if( !in )
return in;
const char *c;
int32_t n;
// Remember: ICO files are little-endian
// read the beginning of the stream and make sure it looks ok
n = in->read(c, 6, 6);
if (n != 6) {
in->reset(0); // rewind to the start of the stream
return in;
}
uint16_t ico_reserved = readLittleEndianUInt16(c);
uint16_t ico_type = readLittleEndianUInt16(c+2);
uint16_t ico_count = readLittleEndianUInt16(c+4);
if ((ico_reserved != 0) || (ico_type != 1) || (ico_count < 1)) {
in->reset(0);
return in;
}
// now loop through each of the icon entries
n = in->read(c, 1, 1);
if (n != 1) {
in->reset(0); // rewind to the start of the stream
return in;
}
uint8_t icoe_width = (uint8_t)*c;
n = in->read(c, 1, 1);
if (n != 1) {
in->reset(0); // rewind to the start of the stream
return in;
}
uint8_t icoe_height = (uint8_t)*c;
n = in->read(c, 1, 1);
if (n != 1) {
in->reset(0); // rewind to the start of the stream
return in;
}
uint8_t icoe_colorcount = (uint8_t)*c;
n = in->read(c, 1, 1);
if (n != 1) {
in->reset(0); // rewind to the start of the stream
return in;
}
//uint8_t icoe_reserved = (uint8_t)*c;
n = in->read(c, 2, 2);
if (n != 2) {
in->reset(0); // rewind to the start of the stream
return in;
}
/*uint16_t icoe_planes =*/ readLittleEndianUInt16(c);
n = in->read(c, 2, 2);
if (n != 2) {
in->reset(0); // rewind to the start of the stream
return in;
}
uint16_t icoe_bitcount = readLittleEndianUInt16(c);
n = in->read(c, 4, 4);
if (n != 4) {
in->reset(0); // rewind to the start of the stream
return in;
}
/*uint32_t icoe_bytesinres =*/ readLittleEndianUInt32(c);
n = in->read(c, 4, 4);
if (n != 4) {
in->reset(0); // rewind to the start of the stream
return in;
}
/*uint32_t icoe_imageoffset =*/ readLittleEndianUInt32(c);
// read the data on the 1st icon
//FIXME: either get rid of this or replace with NIE equivalent
//analysisResult->addValue( factory->numberField, ico_count );
analysisResult->addValue( factory->typeField, "http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#RasterImage" );
analysisResult->addValue( factory->widthField, icoe_width );
analysisResult->addValue( factory->heightField, icoe_height );
if (icoe_bitcount > 0)
analysisResult->addValue( factory->bitsPerPixelField, icoe_bitcount );
if (icoe_colorcount > 0)
analysisResult->addValue( factory->colorCountField, icoe_colorcount );
else if (icoe_bitcount > 0)
analysisResult->addValue( factory->colorCountField, 2 ^ icoe_bitcount );
in->reset(0); // rewind to the start of the stream
return in;
}
bool
IcoThroughAnalyzer::isReadyWithStream() {
return true;
}
//Factory
class Factory : public AnalyzerFactoryFactory {
public:
list<StreamThroughAnalyzerFactory*>
streamThroughAnalyzerFactories() const {
list<StreamThroughAnalyzerFactory*> af;
af.push_back(new IcoThroughAnalyzerFactory());
return af;
}
};
STRIGI_ANALYZER_FACTORY(Factory)
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