Annotation of mandoc/mdoc_hash.c, Revision 1.26
1.26 ! schwarze 1: /* $Id: mdoc_hash.c,v 1.25 2015/04/19 14:00:19 schwarze Exp $ */
1.1 kristaps 2: /*
1.16 kristaps 3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@bsd.lv>
1.26 ! schwarze 4: * Copyright (c) 2015 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.3 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.3 kristaps 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 17: */
1.12 kristaps 18: #include "config.h"
19:
1.8 kristaps 20: #include <sys/types.h>
21:
1.1 kristaps 22: #include <assert.h>
23: #include <ctype.h>
1.9 kristaps 24: #include <limits.h>
1.1 kristaps 25: #include <stdlib.h>
26: #include <stdio.h>
27: #include <string.h>
28:
1.22 schwarze 29: #include "roff.h"
1.17 kristaps 30: #include "mdoc.h"
1.1 kristaps 31: #include "libmdoc.h"
32:
1.18 kristaps 33: static unsigned char table[27 * 12];
1.6 kristaps 34:
1.20 schwarze 35:
1.1 kristaps 36: void
1.9 kristaps 37: mdoc_hash_init(void)
1.1 kristaps 38: {
1.9 kristaps 39: int i, j, major;
40: const char *p;
1.24 schwarze 41:
42: if (*table != '\0')
43: return;
1.1 kristaps 44:
1.9 kristaps 45: memset(table, UCHAR_MAX, sizeof(table));
1.1 kristaps 46:
1.14 kristaps 47: for (i = 0; i < (int)MDOC_MAX; i++) {
1.9 kristaps 48: p = mdoc_macronames[i];
1.1 kristaps 49:
1.18 kristaps 50: if (isalpha((unsigned char)p[1]))
51: major = 12 * (tolower((unsigned char)p[1]) - 97);
1.9 kristaps 52: else
53: major = 12 * 26;
54:
55: for (j = 0; j < 12; j++)
56: if (UCHAR_MAX == table[major + j]) {
1.18 kristaps 57: table[major + j] = (unsigned char)i;
1.9 kristaps 58: break;
59: }
1.1 kristaps 60:
1.9 kristaps 61: assert(j < 12);
1.1 kristaps 62: }
63: }
64:
1.23 schwarze 65: int
1.9 kristaps 66: mdoc_hash_find(const char *p)
1.1 kristaps 67: {
1.9 kristaps 68: int major, i, j;
1.1 kristaps 69:
1.9 kristaps 70: if (0 == p[0])
1.26 ! schwarze 71: return TOKEN_NONE;
1.18 kristaps 72: if ( ! isalpha((unsigned char)p[0]) && '%' != p[0])
1.26 ! schwarze 73: return TOKEN_NONE;
1.6 kristaps 74:
1.18 kristaps 75: if (isalpha((unsigned char)p[1]))
76: major = 12 * (tolower((unsigned char)p[1]) - 97);
1.9 kristaps 77: else if ('1' == p[1])
78: major = 12 * 26;
1.20 schwarze 79: else
1.26 ! schwarze 80: return TOKEN_NONE;
1.1 kristaps 81:
1.9 kristaps 82: if (p[2] && p[3])
1.26 ! schwarze 83: return TOKEN_NONE;
1.1 kristaps 84:
1.9 kristaps 85: for (j = 0; j < 12; j++) {
86: if (UCHAR_MAX == (i = table[major + j]))
87: break;
88: if (0 == strcmp(p, mdoc_macronames[i]))
1.26 ! schwarze 89: return i;
1.1 kristaps 90: }
91:
1.26 ! schwarze 92: return TOKEN_NONE;
1.1 kristaps 93: }
CVSweb