forked from github/server
1052e46613
- made startup regions more balanced implementing free_gamedata(): - cleaning up some static variables
79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
/* vi: set ts=2:
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*
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*
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* Eressea PB(E)M host Copyright (C) 1998-2003
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* Christian Schlittchen (corwin@amber.kn-bremen.de)
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* Katja Zedel (katze@felidae.kn-bremen.de)
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* Henning Peters (faroul@beyond.kn-bremen.de)
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* Enno Rehling (enno@eressea.de)
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* Ingo Wilken (Ingo.Wilken@informatik.uni-oldenburg.de)
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*
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* based on:
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*
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* Atlantis v1.0 13 September 1993 Copyright 1993 by Russell Wallace
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* Atlantis v1.7 Copyright 1996 by Alex Schröder
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*
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* This program may not be used, modified or distributed without
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* prior permission by the authors of Eressea.
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* This program may not be sold or used commercially without prior written
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* permission from the authors.
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*/
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#include <config.h>
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/* libc includes */
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#include <string.h>
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INLINE_FUNCTION unsigned int
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hashstring(const char* s)
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{
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unsigned int key = 0;
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while (*s) {
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key = key*37 + *s++;
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}
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return key & 0x7FFFFFFF;
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}
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INLINE_FUNCTION const char *
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escape_string(const char * str, char * buffer, unsigned int len)
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{
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static char s_buffer[4096]; /* STATIC_RESULT: used for return, not across calls */
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const char * p = str;
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char * o;
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if (buffer==NULL) {
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buffer = s_buffer;
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len = sizeof(s_buffer);
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}
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o = buffer;
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do {
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switch (*p) {
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case '\"':
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case '\\':
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(*o++) = '\\';
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}
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(*o++) = (*p);
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} while (*p++);
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return buffer;
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}
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INLINE_FUNCTION unsigned int jenkins_hash(unsigned int a)
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{
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a = (a+0x7ed55d16) + (a<<12);
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a = (a^0xc761c23c) ^ (a>>19);
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a = (a+0x165667b1) + (a<<5);
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a = (a+0xd3a2646c) ^ (a<<9);
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a = (a+0xfd7046c5) + (a<<3);
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a = (a^0xb55a4f09) ^ (a>>16);
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return a;
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}
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INLINE_FUNCTION unsigned int wang_hash(unsigned int a)
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{
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a = ~a + (a << 15); // a = (a << 15) - a - 1;
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a = a ^ (a >> 12);
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a = a + (a << 2);
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a = a ^ (a >> 4);
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a = a * 2057; // a = (a + (a << 3)) + (a << 11);
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a = a ^ (a >> 16);
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return a;
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}
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