Annotation of src/usr.bin/man/config.c, Revision 1.9
1.9 ! deraadt 1: /* $OpenBSD: config.c,v 1.8 2007/03/20 03:50:39 tedu 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: #include <sys/types.h>
34: #include <sys/queue.h>
35:
36: #include <ctype.h>
37: #include <err.h>
38: #include <errno.h>
39: #include <stdio.h>
40: #include <stdlib.h>
41: #include <string.h>
42:
43: #include "config.h"
44: #include "pathnames.h"
45:
46: struct _head head;
47:
48: /*
49: * config --
50: *
51: * Read the configuration file and build a doubly linked
52: * list that looks like:
53: *
54: * tag1 <-> record <-> record <-> record
55: * |
56: * tag2 <-> record <-> record <-> record
57: */
58: void
1.3 deraadt 59: config(char *fname)
1.1 deraadt 60: {
61: TAG *tp;
62: ENTRY *ep;
63: FILE *cfp;
64: size_t len;
65: int lcnt;
66: char *p, *t;
67:
68: if (fname == NULL)
69: fname = _PATH_MANCONF;
70: if ((cfp = fopen(fname, "r")) == NULL)
71: err(1, "%s", fname);
72: TAILQ_INIT(&head);
73: for (lcnt = 1; (p = fgetln(cfp, &len)) != NULL; ++lcnt) {
74: if (len == 1) /* Skip empty lines. */
75: continue;
76: if (p[len - 1] != '\n') { /* Skip corrupted lines. */
77: warnx("%s: line %d corrupted", fname, lcnt);
78: continue;
79: }
80: p[len - 1] = '\0'; /* Terminate the line. */
81:
82: /* Skip leading space. */
1.8 tedu 83: while (isspace(*p))
1.5 millert 84: p++;
1.1 deraadt 85: /* Skip empty/comment lines. */
86: if (*p == '\0' || *p == '#')
87: continue;
88: /* Find first token. */
1.5 millert 89: for (t = p; *t && !isspace(*t); ++t)
90: continue;
1.1 deraadt 91: if (*t == '\0') /* Need more than one token.*/
92: continue;
93: *t = '\0';
94:
1.7 otto 95: for (tp = TAILQ_FIRST(&head); /* Find any matching tag. */
96: tp != NULL && strcmp(p, tp->s); tp = TAILQ_NEXT(tp, q));
1.1 deraadt 97:
98: if (tp == NULL) /* Create a new tag. */
99: tp = addlist(p);
100:
101: /*
102: * Attach new records. The keyword _build takes the rest of
103: * the line as a single entity, everything else is white
104: * space separated. The reason we're not just using strtok(3)
105: * for all of the parsing is so we don't get caught if a line
106: * has only a single token on it.
107: */
108: if (!strcmp(p, "_build")) {
1.8 tedu 109: while (isspace(*++t));
1.1 deraadt 110: if ((ep = malloc(sizeof(ENTRY))) == NULL ||
111: (ep->s = strdup(t)) == NULL)
112: err(1, NULL);
113: TAILQ_INSERT_TAIL(&tp->list, ep, q);
114: } else for (++t; (p = strtok(t, " \t\n")) != NULL; t = NULL) {
115: if ((ep = malloc(sizeof(ENTRY))) == NULL ||
116: (ep->s = strdup(p)) == NULL)
117: err(1, NULL);
118: TAILQ_INSERT_TAIL(&tp->list, ep, q);
119: }
120: }
121:
122: fclose(cfp);
123: }
124:
125: /*
126: * addlist --
127: * Add a tag to the list.
128: */
129: TAG *
1.3 deraadt 130: addlist(char *name)
1.1 deraadt 131: {
132: TAG *tp;
133:
134: if ((tp = calloc(1, sizeof(TAG))) == NULL ||
135: (tp->s = strdup(name)) == NULL)
136: err(1, NULL);
137: TAILQ_INIT(&tp->list);
138: TAILQ_INSERT_TAIL(&head, tp, q);
139: return (tp);
140: }
141:
142: /*
143: * getlist --
144: * Return the linked list of entries for a tag if it exists.
145: */
146: TAG *
1.3 deraadt 147: getlist(char *name)
1.1 deraadt 148: {
149: TAG *tp;
150:
1.7 otto 151: TAILQ_FOREACH(tp, &head, q)
1.1 deraadt 152: if (!strcmp(name, tp->s))
153: return (tp);
154: return (NULL);
155: }
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