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/*
* Copyright (C) 2004-2012 Geometer Plus <contact@geometerplus.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include <ZLFile.h>
#include "PdbReader.h"
void PdbUtil::readUnsignedShort(ZLInputStream &stream, unsigned short &N) {
unsigned char data[2];
stream.read((char*)data, 2);
N = (((unsigned short)data[0]) << 8) + data[1];
}
void PdbUtil::readUnsignedLongBE(ZLInputStream &stream, unsigned long &N) {
unsigned char data[4];
stream.read((char*)data, 4);
N = (((unsigned long)data[0]) << 24) +
(((unsigned long)data[1]) << 16) +
(((unsigned long)data[2]) << 8) +
(unsigned long)data[3];
}
void PdbUtil::readUnsignedLongLE(ZLInputStream &stream, unsigned long &N) {
unsigned char data[4];
stream.read((char*)data, 4);
N = (((unsigned long)data[3]) << 24) +
(((unsigned long)data[2]) << 16) +
(((unsigned long)data[1]) << 8) +
(unsigned long)data[0];
}
bool PdbHeader::read(shared_ptr<ZLInputStream> stream) {
const std::size_t startOffset = stream->offset();
DocName.erase();
DocName.append(32, '\0');
stream->read((char*)DocName.data(), 32); // stream offset: +32
PdbUtil::readUnsignedShort(*stream, Flags); // stream offset: +34
stream->seek(26, false); // stream offset: +60
Id.erase();
Id.append(8, '\0');
stream->read((char*)Id.data(), 8); // stream offset: +68
stream->seek(8, false); // stream offset: +76
Offsets.clear();
unsigned short numRecords;
PdbUtil::readUnsignedShort(*stream, numRecords); // stream offset: +78
Offsets.reserve(numRecords);
for (int i = 0; i < numRecords; ++i) { // stream offset: +78 + 8 * records number
unsigned long recordOffset;
PdbUtil::readUnsignedLongBE(*stream, recordOffset);
Offsets.push_back(recordOffset);
stream->seek(4, false);
}
return stream->offset() == startOffset + 78 + 8 * numRecords;
}
/*bool PdbRecord0::read(shared_ptr<ZLInputStream> stream) {
std::size_t startOffset = stream->offset();
PdbUtil::readUnsignedShort(*stream, CompressionType);
PdbUtil::readUnsignedShort(*stream, Spare);
PdbUtil::readUnsignedLongBE(*stream, TextLength);
PdbUtil::readUnsignedShort(*stream, TextRecords);
PdbUtil::readUnsignedShort(*stream, MaxRecordSize);
PdbUtil::readUnsignedShort(*stream, NontextOffset);
PdbUtil::readUnsignedShort(*stream, NontextOffset2);
PdbUtil::readUnsignedLongBE(*stream, MobipocketID);
PdbUtil::readUnsignedLongBE(*stream, MobipocketHeaderSize);
PdbUtil::readUnsignedLongBE(*stream, Unknown24);
PdbUtil::readUnsignedShort(*stream, FootnoteRecs);
PdbUtil::readUnsignedShort(*stream, SidebarRecs);
PdbUtil::readUnsignedShort(*stream, BookmarkOffset);
PdbUtil::readUnsignedShort(*stream, Unknown34);
PdbUtil::readUnsignedShort(*stream, NontextOffset3);
PdbUtil::readUnsignedShort(*stream, Unknown38);
PdbUtil::readUnsignedShort(*stream, ImagedataOffset);
PdbUtil::readUnsignedShort(*stream, ImagedataOffset2);
PdbUtil::readUnsignedShort(*stream, MetadataOffset);
PdbUtil::readUnsignedShort(*stream, MetadataOffset2);
PdbUtil::readUnsignedShort(*stream, FootnoteOffset);
PdbUtil::readUnsignedShort(*stream, SidebarOffset);
PdbUtil::readUnsignedShort(*stream, LastDataOffset);
PdbUtil::readUnsignedShort(*stream, Unknown54);
return stream->offset() == startOffset + 56;
}*/
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