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-rw-r--r--src/misc/getopt_long.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/src/misc/getopt_long.c b/src/misc/getopt_long.c
new file mode 100644
index 00000000..6d3a4a6e
--- /dev/null
+++ b/src/misc/getopt_long.c
@@ -0,0 +1,52 @@
+#define _GNU_SOURCE
+#include <stddef.h>
+#include <getopt.h>
+#include <stdio.h>
+
+static int __getopt_long(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx, int longonly)
+{
+ if (optind >= argc || !argv[optind] || argv[optind][0] != '-') return -1;
+ if ((longonly && argv[optind][1]) ||
+ (argv[optind][1] == '-' && argv[optind][2]))
+ {
+ int i;
+ for (i=0; longopts[i].name; i++) {
+ const char *name = longopts[i].name;
+ char *opt = argv[optind]+1;
+ if (*opt == '-') opt++;
+ for (; *name && *name == *opt; name++, opt++);
+ if (*name || (*opt && *opt != '=')) continue;
+ if (*opt == '=') {
+ if (!longopts[i].has_arg) continue;
+ optarg = opt+1;
+ } else {
+ if (longopts[i].has_arg == required_argument) {
+ if (!(optarg = argv[++optind]))
+ return ':';
+ } else optarg = NULL;
+ }
+ optind++;
+ if (idx) *idx = i;
+ if (longopts[i].flag) {
+ *longopts[i].flag = longopts[i].val;
+ return 0;
+ }
+ return longopts[i].val;
+ }
+ if (argv[optind][1] == '-') {
+ optind++;
+ return '?';
+ }
+ }
+ return getopt(argc, argv, optstring);
+}
+
+int getopt_long(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx)
+{
+ return __getopt_long(argc, argv, optstring, longopts, idx, 0);
+}
+
+int getopt_long_only(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx)
+{
+ return __getopt_long(argc, argv, optstring, longopts, idx, 1);
+}