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authorCem Keylan <cem@ckyln.com>2020-10-16 17:47:01 +0300
committerCem Keylan <cem@ckyln.com>2020-10-16 17:47:01 +0300
commit5d69c6a2661bba0a22f3ecfd517e2e9767a38346 (patch)
tree1f479b2714e127835db7f33a3bfed4c38c52f883 /bin/pax/getoldopt.c
parente2abcdca396661cbe0ae2ddb13d5c2b85682c13a (diff)
downloadotools-5d69c6a2661bba0a22f3ecfd517e2e9767a38346.tar.gz
add tools
Diffstat (limited to 'bin/pax/getoldopt.c')
-rw-r--r--bin/pax/getoldopt.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/bin/pax/getoldopt.c b/bin/pax/getoldopt.c
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+/* $OpenBSD: getoldopt.c,v 1.9 2009/10/27 23:59:22 deraadt Exp $ */
+/* $NetBSD: getoldopt.c,v 1.3 1995/03/21 09:07:28 cgd Exp $ */
+
+/*
+ * Plug-compatible replacement for getopt() for parsing tar-like
+ * arguments. If the first argument begins with "-", it uses getopt;
+ * otherwise, it uses the old rules used by tar, dump, and ps.
+ *
+ * Written 25 August 1985 by John Gilmore (ihnp4!hoptoad!gnu) and placed
+ * in the Public Domain for your edification and enjoyment.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include "pax.h"
+#include "extern.h"
+
+int
+getoldopt(int argc, char **argv, const char *optstring)
+{
+ static char *key; /* Points to next keyletter */
+ static char use_getopt; /* !=0 if argv[1][0] was '-' */
+ char c;
+ char *place;
+
+ optarg = NULL;
+
+ if (key == NULL) { /* First time */
+ if (argc < 2)
+ return (-1);
+ key = argv[1];
+ if (*key == '-')
+ use_getopt++;
+ else
+ optind = 2;
+ }
+
+ if (use_getopt)
+ return (getopt(argc, argv, optstring));
+
+ c = *key++;
+ if (c == '\0') {
+ key--;
+ return (-1);
+ }
+ place = strchr(optstring, c);
+
+ if (place == NULL || c == ':') {
+ fprintf(stderr, "%s: unknown option %c\n", argv[0], c);
+ return ('?');
+ }
+
+ place++;
+ if (*place == ':') {
+ if (optind < argc) {
+ optarg = argv[optind];
+ optind++;
+ } else {
+ fprintf(stderr, "%s: %c argument missing\n",
+ argv[0], c);
+ return ('?');
+ }
+ }
+
+ return (c);
+}