rc

commit 9411d4d4bca6717cc534c0c047b4370d98f8c278
parent fc8169d3e79bfdcbc75cbee245e2312218ebb01c
Author: tgoodwin <tgoodwin>
Date:   Wed, 28 Oct 1998 11:40:46 +0000

Initial revision

Diffstat:
A
getopt.c
 | 
50
++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 50 insertions(+), 0 deletions(-)
diff --git a/getopt.c b/getopt.c
@@ -0,0 +1,50 @@
+#include "rc.h"
+
+int     rc_opterr = 1;
+int     rc_optind = 1;
+int     rc_optopt;
+char    *rc_optarg;
+
+/* getopt routine courtesy of David Sanderson */
+ 
+extern int rc_getopt(int argc, char **argv, char *opts) {
+        static int sp = 1;
+        int c;
+        char *cp;
+	if (rc_optind == 0) /* reset rc_getopt() */
+		rc_optind = sp = 1;
+        if (sp == 1)
+                if (rc_optind >= argc || argv[rc_optind][0] != '-' || argv[rc_optind][1] == '\0') {
+                        return -1;
+                } else if (strcmp(argv[rc_optind], "--") == 0) {
+                        rc_optind++;
+                        return -1;
+                }
+        rc_optopt = c = argv[rc_optind][sp];
+        if (c == ':' || (cp=strchr(opts, c)) == 0) {
+                fprint(2, "%s: bad option: -%c\n", argv[0], c);
+                if (argv[rc_optind][++sp] == '\0') {
+                        rc_optind++;
+                        sp = 1;
+                }
+                return '?';
+        }
+        if (*++cp == ':') {
+                if (argv[rc_optind][sp+1] != '\0') {
+                        rc_optarg = &argv[rc_optind++][sp+1];
+                } else if (++rc_optind >= argc) {
+                        fprint(2, "%s: option requires an argument -- %c\n", argv[0], c);
+                        sp = 1;
+                        return '?';
+                } else
+                        rc_optarg = argv[rc_optind++];
+                sp = 1;
+        } else {
+                if (argv[rc_optind][++sp] == '\0') {
+                        sp = 1;
+                        rc_optind++;
+                }
+                rc_optarg = NULL;
+        }
+        return c;
+}