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authorRich Felker <dalias@aerifal.cx>2012-09-30 20:00:38 -0400
committerRich Felker <dalias@aerifal.cx>2012-09-30 20:00:38 -0400
commit030e52639248ac8417a4934298caa78c21a228d1 (patch)
treeb35e1d3893f3b9db44dd006d1ef944057e9f1906 /src/misc/getopt.c
parente44849f5cf331e655705b18d6c81c616e29d50d0 (diff)
downloadmusl-030e52639248ac8417a4934298caa78c21a228d1.tar.gz
add getopt reset support
based on proposed patches by Daniel Cegiełka, with minor changes: - use a weak symbol for optreset so it doesn't clash with namespace - also reset optpos (position in multi-option arg like -lR) - also make getopt_long support reset
Diffstat (limited to 'src/misc/getopt.c')
-rw-r--r--src/misc/getopt.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/src/misc/getopt.c b/src/misc/getopt.c
index abf0e847..35880a09 100644
--- 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])