NetBSD/usr.bin/man/config.c

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/* $NetBSD: config.c,v 1.7 1995/09/28 06:05:21 tls Exp $ */
/*
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* Copyright (c) 1989, 1993, 1995
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
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#if 0
static char sccsid[] = "@(#)config.c 8.8 (Berkeley) 1/31/95";
#else
static char rcsid[] = "$NetBSD: config.c,v 1.7 1995/09/28 06:05:21 tls Exp $";
#endif
#endif /* not lint */
#include <sys/types.h>
#include <sys/queue.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "config.h"
#include "pathnames.h"
struct _head head;
/*
* config --
*
* Read the configuration file and build a doubly linked
* list that looks like:
*
* tag1 <-> record <-> record <-> record
* |
* tag2 <-> record <-> record <-> record
*/
void
config(fname)
char *fname;
{
TAG *tp;
ENTRY *ep;
FILE *cfp;
size_t len;
int lcnt;
char *p, *t;
if (fname == NULL)
fname = _PATH_MANCONF;
if ((cfp = fopen(fname, "r")) == NULL)
err(1, "%s", fname);
TAILQ_INIT(&head);
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for (lcnt = 1; (p = fgetln(cfp, &len)) != NULL; ++lcnt) {
if (len == 1) /* Skip empty lines. */
continue;
if (p[len - 1] != '\n') { /* Skip corrupted lines. */
warnx("%s: line %d corrupted", fname, lcnt);
continue;
}
p[len - 1] = '\0'; /* Terminate the line. */
/* Skip leading space. */
for (; *p != '\0' && isspace(*p); ++p);
/* Skip empty/comment lines. */
if (*p == '\0' || *p == '#')
continue;
/* Find first token. */
for (t = p; *t && !isspace(*t); ++t);
if (*t == '\0') /* Need more than one token.*/
continue;
*t = '\0';
for (tp = head.tqh_first; /* Find any matching tag. */
tp != NULL && strcmp(p, tp->s); tp = tp->q.tqe_next);
if (tp == NULL) /* Create a new tag. */
tp = addlist(p);
/*
* Attach new records. The keyword _build takes the rest of
* the line as a single entity, everything else is white
* space separated. The reason we're not just using strtok(3)
* for all of the parsing is so we don't get caught if a line
* has only a single token on it.
*/
if (!strcmp(p, "_build")) {
while (*++t && isspace(*t));
if ((ep = malloc(sizeof(ENTRY))) == NULL ||
(ep->s = strdup(t)) == NULL)
err(1, NULL);
TAILQ_INSERT_TAIL(&tp->list, ep, q);
} else for (++t; (p = strtok(t, " \t\n")) != NULL; t = NULL) {
if ((ep = malloc(sizeof(ENTRY))) == NULL ||
(ep->s = strdup(p)) == NULL)
err(1, NULL);
TAILQ_INSERT_TAIL(&tp->list, ep, q);
}
}
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fclose(cfp);
}
/*
* addlist --
* Add a tag to the list.
*/
TAG *
addlist(name)
char *name;
{
TAG *tp;
if ((tp = calloc(1, sizeof(TAG))) == NULL ||
(tp->s = strdup(name)) == NULL)
err(1, NULL);
TAILQ_INIT(&tp->list);
TAILQ_INSERT_TAIL(&head, tp, q);
return (tp);
}
/*
* getlist --
* Return the linked list of entries for a tag if it exists.
*/
TAG *
getlist(name)
char *name;
{
TAG *tp;
for (tp = head.tqh_first; tp != NULL; tp = tp->q.tqe_next)
if (!strcmp(name, tp->s))
return (tp);
return (NULL);
}
void
debug(l)
char *l;
{
TAG *tp;
ENTRY *ep;
(void)printf("%s ===============\n", l);
for (tp = head.tqh_first; tp != NULL; tp = tp->q.tqe_next) {
printf("%s\n", tp->s);
for (ep = tp->list.tqh_first; ep != NULL; ep = ep->q.tqe_next)
printf("\t%s\n", ep->s);
}
}