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67 lines
2.1 KiB
C++
67 lines
2.1 KiB
C++
/* ResidualVM - A 3D game interpreter
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*
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* ResidualVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the AUTHORS
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* file distributed with this source distribution.
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*
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* Additional copyright for this file:
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* Copyright (C) 1999-2000 Revolution Software Ltd.
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* This code is based on source code created by Revolution Software,
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* used with permission.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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 Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "engines/icb/common/px_rccommon.h"
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#include "engines/icb/common/px_rcutypes.h"
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#include "engines/icb/common/px_assert.h"
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#include "engines/icb/common/px_string.h"
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#include "engines/icb/common/px_common.h"
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#include "engines/icb/common/px_clu_api.h"
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#include "engines/icb/common/px_linkeddatafile.h"
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namespace ICB {
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// get NUMBER given HASH (does the search) - hashs must be ordered for this binary search to succeed.
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uint32 _linked_data_file::Fetch_item_number_by_hash(const uint32 hash) {
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int32 top, bottom;
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int32 i;
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uint32 current;
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if (!number_of_items)
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return PX_LINKED_DATA_FILE_ERROR;
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top = number_of_items - 1;
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i = top >> 1;
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bottom = 0;
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for (;;) {
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current = list[i].name_hash_value;
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if (hash == current)
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return i;
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else if (top == bottom)
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return PX_LINKED_DATA_FILE_ERROR;
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else if (hash > current) {
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bottom = i + 1;
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i = (top + bottom) >> 1;
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} else {
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top = i;
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i = (top + bottom) >> 1;
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}
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}
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}
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} // End of namespace ICB
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