initial import of NetBSD tree

1 files changed, 182 insertions, 0 deletions

diff --git a/usr.bin/man/config.c b/usr.bin/man/config.c
new file mode 100644
index 00000000000..93e195fea6b
--- /dev/null
+++ b/usr.bin/man/config.c
@@ -0,0 +1,182 @@
+/*	$NetBSD: config.c,v 1.7 1995/09/28 06:05:21 tls Exp $	*/
+
+/*
+ * 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
+#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);
+	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);
+		}
+	}
+
+	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);
+	}
+}