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111 lines
3.2 KiB
111 lines
3.2 KiB
/***************************************************************************
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* Copyright (C) 2005 by Joris Guisson *
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* joris.guisson@gmail.com *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
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***************************************************************************/
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#include <klocale.h>
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#include <util/log.h>
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#include <util/file.h>
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#include <util/error.h>
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#include <util/array.h>
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#include <torrent/globals.h>
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#include <torrent/torrent.h>
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#include <torrent/chunkmanager.h>
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#include "cachechecker.h"
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using namespace bt;
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namespace ktdebug
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{
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CacheChecker::CacheChecker(bt::Torrent & tor) : tor(tor)
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{}
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CacheChecker::~CacheChecker()
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{}
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void CacheChecker::loadIndex(const QString & index_file)
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{
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this->index_file = index_file;
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File fptr;
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if (!fptr.open(index_file,"rb"))
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throw Error(i18n("Cannot open index file %1 : %2").arg(index_file).arg(fptr.errorString()));
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if (fptr.seek(File::END,0) != 0)
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{
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fptr.seek(File::BEGIN,0);
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while (!fptr.eof())
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{
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NewChunkHeader hdr;
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fptr.read(&hdr,sizeof(NewChunkHeader));
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downloaded_chunks.insert(hdr.index);
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}
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}
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}
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struct ChunkHeader
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{
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unsigned int index; // the Chunks index
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unsigned int deprecated; // offset in cache file
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};
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void CacheChecker::fixIndex()
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{
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if (failed_chunks.size() == 0 && extra_chunks.size() == 0)
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return;
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File fptr;
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if (!fptr.open(index_file,"wb"))
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throw Error(i18n("Cannot open index file %1 : %2").arg(index_file).arg(fptr.errorString()));
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std::set<bt::Uint32>::iterator i;
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// first remove failed chunks from downloaded
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if (failed_chunks.size() > 0)
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{
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i = failed_chunks.begin();
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while (i != failed_chunks.end())
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{
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downloaded_chunks.erase(*i);
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i++;
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}
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}
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// add extra chunks to download
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if (extra_chunks.size() > 0)
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{
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i = extra_chunks.begin();
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while (i != extra_chunks.end())
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{
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downloaded_chunks.insert(*i);
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i++;
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}
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}
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// write remaining chunks
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i = downloaded_chunks.begin();
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while (i != downloaded_chunks.end())
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{
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ChunkHeader ch = {*i,0};
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fptr.write(&ch,sizeof(ChunkHeader));
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i++;
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}
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}
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}
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