mirror of
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49 lines
1.4 KiB
C++
49 lines
1.4 KiB
C++
/*
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* Copyright (C) 2008-2015 TrinityCore <http://www.trinitycore.org/>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "Chunk.h"
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#include "Utils.h"
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int32 Chunk::FindSubChunkOffset(std::string name)
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{
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// Reverse the name
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name = std::string(name.rbegin(), name.rend());
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if (name.size() != 4)
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return -1;
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FILE* stream = GetStream();
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uint32 matched = 0;
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while (uint32(ftell(stream)) < Utils::Size(stream))
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{
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char b = 0;
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if (fread(&b, sizeof(char), 1, stream) != 1 || b != name[matched])
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matched = 0;
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else
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++matched;
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if (matched == 4)
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return ftell(stream) - 4;
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}
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return -1;
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}
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FILE* Chunk::GetStream()
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{
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fseek(Stream, Offset, SEEK_SET);
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return Stream;
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}
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