add getopt reset support

[musl] / src / misc / getopt.c

diff --git a/src/misc/getopt.c b/src/misc/getopt.c
index abf0e84..35880a0 100644 (file)
--- a/src/misc/getopt.c
+++ b/src/misc/getopt.c
@@ -3,10 +3,13 @@
 #include <string.h>
 #include <limits.h>
 #include <stdlib.h>
+#include "libc.h"
 
 char *optarg;
-int optind=1, opterr=1, optopt;
-static int optpos;
+int optind=1, opterr=1, optopt, __optpos, __optreset=0;
+
+#define optpos __optpos
+weak_alias(__optreset, optreset);
 
 int getopt(int argc, char * const argv[], const char *optstring)
 {
@@ -15,6 +18,12 @@ int getopt(int argc, char * const argv[], const char *optstring)
        int k, l;
        char *optchar;
 
+       if (!optind || __optreset) {
+               __optreset = 0;
+               __optpos = 0;
+               optind = 1;
+       }
+
        if (optind >= argc || !argv[optind] || argv[optind][0] != '-' || !argv[optind][1])
                return -1;
        if (argv[optind][1] == '-' && !argv[optind][2])