Annotation of src/usr.bin/man/config.c, Revision 1.7
1.7 ! otto 1: /* $OpenBSD: config.c,v 1.6 2004/09/15 22:20:03 deraadt Exp $ */
1.1 deraadt 2: /* $NetBSD: config.c,v 1.7 1995/09/28 06:05:21 tls Exp $ */
3:
4: /*
5: * Copyright (c) 1989, 1993, 1995
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.4 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #ifndef lint
34: #if 0
35: static char sccsid[] = "@(#)config.c 8.8 (Berkeley) 1/31/95";
36: #else
1.7 ! otto 37: static char rcsid[] = "$OpenBSD: config.c,v 1.6 2004/09/15 22:20:03 deraadt Exp $";
1.1 deraadt 38: #endif
39: #endif /* not lint */
40:
41: #include <sys/types.h>
42: #include <sys/queue.h>
43:
44: #include <ctype.h>
45: #include <err.h>
46: #include <errno.h>
47: #include <stdio.h>
48: #include <stdlib.h>
49: #include <string.h>
50:
51: #include "config.h"
52: #include "pathnames.h"
53:
54: struct _head head;
55:
56: /*
57: * config --
58: *
59: * Read the configuration file and build a doubly linked
60: * list that looks like:
61: *
62: * tag1 <-> record <-> record <-> record
63: * |
64: * tag2 <-> record <-> record <-> record
65: */
66: void
1.3 deraadt 67: config(char *fname)
1.1 deraadt 68: {
69: TAG *tp;
70: ENTRY *ep;
71: FILE *cfp;
72: size_t len;
73: int lcnt;
74: char *p, *t;
75:
76: if (fname == NULL)
77: fname = _PATH_MANCONF;
78: if ((cfp = fopen(fname, "r")) == NULL)
79: err(1, "%s", fname);
80: TAILQ_INIT(&head);
81: for (lcnt = 1; (p = fgetln(cfp, &len)) != NULL; ++lcnt) {
82: if (len == 1) /* Skip empty lines. */
83: continue;
84: if (p[len - 1] != '\n') { /* Skip corrupted lines. */
85: warnx("%s: line %d corrupted", fname, lcnt);
86: continue;
87: }
88: p[len - 1] = '\0'; /* Terminate the line. */
89:
90: /* Skip leading space. */
1.5 millert 91: while (*p != '\0' && isspace(*p))
92: p++;
1.1 deraadt 93: /* Skip empty/comment lines. */
94: if (*p == '\0' || *p == '#')
95: continue;
96: /* Find first token. */
1.5 millert 97: for (t = p; *t && !isspace(*t); ++t)
98: continue;
1.1 deraadt 99: if (*t == '\0') /* Need more than one token.*/
100: continue;
101: *t = '\0';
102:
1.7 ! otto 103: for (tp = TAILQ_FIRST(&head); /* Find any matching tag. */
! 104: tp != NULL && strcmp(p, tp->s); tp = TAILQ_NEXT(tp, q));
1.1 deraadt 105:
106: if (tp == NULL) /* Create a new tag. */
107: tp = addlist(p);
108:
109: /*
110: * Attach new records. The keyword _build takes the rest of
111: * the line as a single entity, everything else is white
112: * space separated. The reason we're not just using strtok(3)
113: * for all of the parsing is so we don't get caught if a line
114: * has only a single token on it.
115: */
116: if (!strcmp(p, "_build")) {
117: while (*++t && isspace(*t));
118: if ((ep = malloc(sizeof(ENTRY))) == NULL ||
119: (ep->s = strdup(t)) == NULL)
120: err(1, NULL);
121: TAILQ_INSERT_TAIL(&tp->list, ep, q);
122: } else for (++t; (p = strtok(t, " \t\n")) != NULL; t = NULL) {
123: if ((ep = malloc(sizeof(ENTRY))) == NULL ||
124: (ep->s = strdup(p)) == NULL)
125: err(1, NULL);
126: TAILQ_INSERT_TAIL(&tp->list, ep, q);
127: }
128: }
129:
130: fclose(cfp);
131: }
132:
133: /*
134: * addlist --
135: * Add a tag to the list.
136: */
137: TAG *
1.3 deraadt 138: addlist(char *name)
1.1 deraadt 139: {
140: TAG *tp;
141:
142: if ((tp = calloc(1, sizeof(TAG))) == NULL ||
143: (tp->s = strdup(name)) == NULL)
144: err(1, NULL);
145: TAILQ_INIT(&tp->list);
146: TAILQ_INSERT_TAIL(&head, tp, q);
147: return (tp);
148: }
149:
150: /*
151: * getlist --
152: * Return the linked list of entries for a tag if it exists.
153: */
154: TAG *
1.3 deraadt 155: getlist(char *name)
1.1 deraadt 156: {
157: TAG *tp;
158:
1.7 ! otto 159: TAILQ_FOREACH(tp, &head, q)
1.1 deraadt 160: if (!strcmp(name, tp->s))
161: return (tp);
162: return (NULL);
163: }
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