175 lines
4.8 KiB
C
175 lines
4.8 KiB
C
/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)config.c 8.7 (Berkeley) 1/3/94";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "config.h"
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#include "pathnames.h"
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struct _head head;
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/*
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* config --
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*
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* Read the configuration file and build a doubly linked
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* list that looks like:
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*
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* tag1 <-> record <-> record <-> record
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* |
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* tag2 <-> record <-> record <-> record
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*/
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void
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config(fname)
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char *fname;
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{
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TAG *tp;
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ENTRY *ep;
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FILE *cfp;
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size_t len;
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int lcnt;
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char *p, *t;
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if (fname == NULL)
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fname = _PATH_MANCONF;
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if ((cfp = fopen(fname, "r")) == NULL)
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err(1, "%s", fname);
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TAILQ_INIT(&head);
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for (lcnt = 1; (p = fgetln(cfp, &len)) != NULL; ++lcnt) {
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if (len == 1) /* Skip empty lines. */
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continue;
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if (p[len - 1] != '\n') { /* Skip corrupted lines. */
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warnx("%s: line %d corrupted", fname, lcnt);
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continue;
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}
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p[len - 1] = '\0'; /* Terminate the line. */
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/* Skip leading space. */
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for (; *p != '\0' && isspace(*p); ++p);
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/* Skip empty/comment lines. */
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if (*p == '\0' || *p == '#')
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continue;
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/* Find first token. */
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for (t = p; *t && !isspace(*t); ++t);
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if (*t == '\0') /* Need more than one token.*/
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continue;
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*t = '\0';
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for (tp = head.tqh_first; /* Find any matching tag. */
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tp != NULL && strcmp(p, tp->s); tp = tp->q.tqe_next);
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if (tp == NULL) /* Create a new tag. */
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tp = addlist(p);
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/*
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* Attach new records. The keyword _build takes the rest of
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* the line as a single entity, everything else is white
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* space separated. The reason we're not just using strtok(3)
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* for all of the parsing is so we don't get caught if a line
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* has only a single token on it.
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*/
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if (!strcmp(p, "_build")) {
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while (*++t && isspace(*t));
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if ((ep = malloc(sizeof(ENTRY))) == NULL ||
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(ep->s = strdup(t)) == NULL)
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err(1, NULL);
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TAILQ_INSERT_TAIL(&tp->list, ep, q);
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} else for (++t; (p = strtok(t, " \t\n")) != NULL; t = NULL) {
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if ((ep = malloc(sizeof(ENTRY))) == NULL ||
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(ep->s = strdup(p)) == NULL)
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err(1, NULL);
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TAILQ_INSERT_TAIL(&tp->list, ep, q);
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}
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}
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}
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/*
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* addlist --
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* Add a tag to the list.
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*/
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TAG *
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addlist(name)
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char *name;
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{
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TAG *tp;
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if ((tp = calloc(1, sizeof(TAG))) == NULL ||
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(tp->s = strdup(name)) == NULL)
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err(1, NULL);
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TAILQ_INIT(&tp->list);
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TAILQ_INSERT_TAIL(&head, tp, q);
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return (tp);
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}
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/*
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* getlist --
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* Return the linked list of entries for a tag if it exists.
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*/
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TAG *
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getlist(name)
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char *name;
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{
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TAG *tp;
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for (tp = head.tqh_first; tp != NULL; tp = tp->q.tqe_next)
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if (!strcmp(name, tp->s))
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return (tp);
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return (NULL);
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}
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void
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debug(l)
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char *l;
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{
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TAG *tp;
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ENTRY *ep;
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(void)printf("%s ===============\n", l);
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for (tp = head.tqh_first; tp != NULL; tp = tp->q.tqe_next) {
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printf("%s\n", tp->s);
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for (ep = tp->list.tqh_first; ep != NULL; ep = ep->q.tqe_next)
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printf("\t%s\n", ep->s);
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}
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}
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