Annotation of mandoc/man_hash.c, Revision 1.8
1.8 ! kristaps 1: /* $Id: man_hash.c,v 1.7 2009/04/12 19:45:26 kristaps Exp $ */
1.1 kristaps 2: /*
1.8 ! kristaps 3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
1.1 kristaps 4: *
5: * Permission to use, copy, modify, and distribute this software for any
1.7 kristaps 6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 8: *
1.7 kristaps 9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 16: */
1.5 kristaps 17: #include <assert.h>
1.1 kristaps 18: #include <stdlib.h>
19: #include <string.h>
20:
21: #include "libman.h"
22:
1.5 kristaps 23:
1.1 kristaps 24: /* ARGUSED */
25: void
26: man_hash_free(void *htab)
27: {
28:
1.5 kristaps 29: free(htab);
1.1 kristaps 30: }
31:
32:
33: /* ARGUSED */
34: void *
35: man_hash_alloc(void)
36: {
1.5 kristaps 37: int *htab;
38: int i, j, x;
39:
1.6 kristaps 40: htab = calloc(26 * 5, sizeof(int));
1.5 kristaps 41: if (NULL == htab)
42: return(NULL);
43:
44: for (i = 1; i < MAN_MAX; i++) {
45: x = man_macronames[i][0];
46:
47: assert((x >= 65 && x <= 90) ||
48: (x >= 97 && x <= 122));
49:
50: x -= (x <= 90) ? 65 : 97;
1.6 kristaps 51: x *= 5;
1.5 kristaps 52:
1.6 kristaps 53: for (j = 0; j < 5; j++)
1.5 kristaps 54: if (0 == htab[x + j]) {
55: htab[x + j] = i;
56: break;
57: }
58:
1.6 kristaps 59: assert(j < 5);
1.5 kristaps 60: }
1.1 kristaps 61:
1.5 kristaps 62: return((void *)htab);
1.1 kristaps 63: }
64:
65:
66: int
67: man_hash_find(const void *arg, const char *tmp)
68: {
1.5 kristaps 69: int x, i, tok;
70: const int *htab;
1.1 kristaps 71:
1.5 kristaps 72: htab = (const int *)arg;
1.2 kristaps 73:
1.5 kristaps 74: if (0 == (x = tmp[0]))
75: return(MAN_MAX);
76: if ( ! ((x >= 65 && x <= 90) || (x >= 97 && x <= 122)))
77: return(MAN_MAX);
78:
79: x -= (x <= 90) ? 65 : 97;
1.6 kristaps 80: x *= 5;
1.5 kristaps 81:
1.6 kristaps 82: for (i = 0; i < 5; i++) {
1.5 kristaps 83: if (0 == (tok = htab[x + i]))
84: return(MAN_MAX);
85: if (0 == strcmp(tmp, man_macronames[tok]))
86: return(tok);
87: }
1.1 kristaps 88:
89: return(MAN_MAX);
90: }
91:
CVSweb