date and time created 90/05/20 13:20:33 by bostic

SCCS-vsn: usr.bin/man/config.c 5.1

diff --git a/usr/src/usr.bin/man/config.c b/usr/src/usr.bin/man/config.c
new file mode 100644 (file)
index 0000000..699f78d
--- /dev/null
+++ b/usr/src/usr.bin/man/config.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 1989 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)config.c   5.1 (Berkeley) %G%";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include "pathnames.h"
+
+extern char *progname;
+
+/*
+ * config --
+ *     read in the configuration file, convert it to a colon separated
+ *     path.
+ */
+char *
+config()
+{
+       register char *p;
+       u_int buflen;
+       int len;
+       char *buf, *endp, line[256], *realloc();
+
+       if (!freopen(_PATH_MANCONF, "r", stdin)) {
+               (void)fprintf(stderr, "%s: no configuration file %s.\n",
+                   progname, _PATH_MANCONF);
+               exit(1);
+       }
+       buflen = 0;
+       buf = endp = p = NULL;
+       while (fgets(line, sizeof(line), stdin)) {
+               if (!index(line, '\n')) {
+                       (void)fprintf(stderr, "%s: config line too long.\n",
+                           progname);
+                       exit(1);
+               }
+               len = strcspn(line, " \t\n");
+               if (!len || *line == '#')
+                       continue;
+               if (!p || p + len + 2 >= endp) {
+                       if (!(buf = realloc(buf, buflen += 1024)))
+                               enomem();
+                       if (!p)
+                               p = buf;
+                       endp = buf + buflen;
+               }
+               bcopy(line, p, len);
+               p += len;
+               *p++ = ':';
+       }
+       if (!buf)
+               return((char *)NULL);
+       *--p = '\0';
+       return(buf);
+}
+
+enomem()
+{
+       extern int errno;
+       char *strerror();
+
+       (void)fprintf(stderr, "%s: %s\n", strerror(ENOMEM), progname);
+       exit(1);
+}