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Diffstat (limited to 'common/assocarray.cpp')
-rw-r--r-- | common/assocarray.cpp | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/common/assocarray.cpp b/common/assocarray.cpp new file mode 100644 index 0000000000..eb2ee47f66 --- /dev/null +++ b/common/assocarray.cpp @@ -0,0 +1,116 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2006 The ScummVM project + * + * 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. + * + * $URL$ + * $Id$ + * + */ + +// Code is based on: + +/* + * Copyright (c) 1998-2003 Massachusetts Institute of Technology. + * This code was developed as part of the Haystack research project + * (http://haystack.lcs.mit.edu/). Permission is hereby granted, + * free of charge, to any person obtaining a copy of this software + * and associated documentation files (the "Software"), to deal in + * the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, + * sublicense, and/or sell copies of the Software, and to permit + * persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +/************************************************* + + assocarray.h - Associative arrays + + Andrew Y. Ng, 1996 + +**************************************************/ + +#include "common/assocarray.h" + +namespace Common { + +// int: +int hashit(int x, int hashsize) { + return x % hashsize; +} + +int data_eq(int x, int y) { + return x == y; +} + +#if 0 +// double: +int hashit(double d, int hashsize) { + int hash, dex; + byte *p = (byte *)&d; + + hash = 0; + + for (dex = 0; dex < sizeof(double); dex++) + hash = ((hash << 8) + p[dex]) % hashsize; + + return hash; +} +#endif + +int data_eq(double d1, double d2) { + return (d1 == d2); +} + +// const char *: +int hashit(const char *str, int hashsize) { + const byte *p = (const byte *)str; + int hash, dex; + + hash = 0; + + for (dex = 0; p[dex] != 0; dex++) + hash = ((hash << 8) + p[dex]) % hashsize; + + return hash; +} + +int data_eq(const char *str1, const char *str2) { + return !strcmp(str1, str2); +} + +// String: +int hashit(const Common::String &str, int hashsize) { + return hashit(str.c_str(), hashsize); +} + +int data_eq(const Common::String &str1, const String &str2) { + return (str1 == str2); +} + +} // End of namespace Common |