1 files changed, 108 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/libcruft/getopt_long_only.c b/mdk-stage1/dietlibc/libcruft/getopt_long_only.c
new file mode 100644
index 000000000..f12f9f184
--- /dev/null
+++ b/mdk-stage1/dietlibc/libcruft/getopt_long_only.c
@@ -0,0 +1,108 @@
+#include <string.h>
+#include <getopt.h>
+
+static void getopterror(int which) {
+  static char error1[]="Unknown option `-x'.\n";
+  static char error2[]="Missing argument for `-x'.\n";
+  if (opterr) {
+    if (which) {
+      error2[23]=optopt;
+      write(2,error2,28);
+    } else {
+      error1[17]=optopt;
+      write(2,error1,22);
+    }
+  }
+}
+
+int getopt_long_only(int argc, char * const argv[], const char *optstring,
+		const struct option *longopts, int *longindex) {
+  static int lastidx=0,lastofs=0;
+  char *tmp,*arg;
+  if (optind==0) optind=1;	/* whoever started setting optind to 0 should be shot */
+again:
+  if (optind>argc || !argv[optind] || *argv[optind]!='-' || argv[optind][1]==0)
+    return -1;
+  if (argv[optind][1]=='-' && argv[optind][2]==0) {
+    ++optind;
+    return -1;
+  }
+  if (argv[optind][1]=='-')
+    arg=argv[optind]+2;
+  else
+    arg=argv[optind]+1;
+  {
+    char* max=strchr(arg,'=');
+    const struct option* o;
+    if (!max) max=arg+strlen(arg);
+    for (o=longopts; o->name; ++o) {
+      if (!strncmp(o->name,arg,(size_t)(max-arg))) {	/* match */
+	if (longindex) *longindex=o-longopts;
+	if (o->has_arg>0) {
+	  if (*max=='=')
+	    optarg=max+1;
+	  else {
+	    optarg=argv[optind+1];
+	    if (!optarg && o->has_arg==1) {	/* no argument there */
+	      if (*optstring==':') return ':';
+	      write(2,"argument required: `",20);
+	      write(2,arg,(size_t)(max-arg));
+	      write(2,"'.\n",3);
+	      ++optind;
+	      return '?';
+	    }
+	    ++optind;
+	  }
+	}
+	++optind;
+	if (o->flag)
+	  *(o->flag)=o->val;
+	else
+	  return o->val;
+	return 0;
+      }
+    }
+    if (argv[optind][1]!='-') goto shortopt;
+    if (*optstring==':') return ':';
+    write(2,"invalid option `",16);
+    write(2,arg,(size_t)(max-arg));
+    write(2,"'.\n",3);
+    ++optind;
+    return '?';
+  }
+shortopt:
+  if (lastidx!=optind) {
+    lastidx=optind; lastofs=0;
+  }
+  optopt=argv[optind][lastofs+1];
+  if ((tmp=strchr(optstring,optopt))) {
+    if (*tmp==0) {	/* apparently, we looked for \0, i.e. end of argument */
+      ++optind;
+      goto again;
+    }
+    if (tmp[1]==':') {	/* argument expected */
+      if (tmp[2]==':' || argv[optind][lastofs+2]) {	/* "-foo", return "oo" as optarg */
+	if (!*(optarg=argv[optind]+lastofs+2)) optarg=0;
+	goto found;
+      }
+      optarg=argv[optind+1];
+      if (!optarg) {	/* missing argument */
+	++optind;
+	if (*optstring==':') return ':';
+	getopterror(1);
+	return ':';
+      }
+      ++optind;
+    } else {
+      ++lastofs;
+      return optopt;
+    }
+found:
+    ++optind;
+    return optopt;
+  } else {	/* not found */
+    getopterror(0);
+    ++optind;
+    return '?';
+  }
+}