Added getopt. The implementation is based on a public domain source,

originally written by Henry Spencer and supplied by Harald Arnesen.


git-svn-id: svn://svn.cc65.org/cc65/trunk@4737 b7a2c559-68d2-44c3-8de9-860c34a00d81

testcode/lib/getopt-test.c

@@ -0,0 +1,61 @@
+/*
+ * This is part of a changed public domain getopt implementation that
+ * had the following text on top:
+ *
+ *      I got this off net.sources from Henry Spencer.
+ *      It is a public domain getopt(3) like in System V.
+ *      I have made the following modifications:
+ *
+ *      A test main program was added, ifdeffed by GETOPT.
+ *      This main program is a public domain implementation
+ *      of the getopt(1) program like in System V.  The getopt
+ *      program can be used to standardize shell option handling.
+ *              e.g.  cc -DGETOPT getopt.c -o getopt
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define ARGCH    ':'
+#define BADCH    '?'
+#define ENDARGS  "--"
+
+int main (int argc, char **argv)
+{
+    char *optstring = argv[1];
+
+    char *argv0 = argv[0];
+
+    int opterr = 0;
+
+    int C;
+
+    char *opi;
+
+    if (argc == 1) {
+        fprintf (stderr, "Usage: %s optstring args\n", argv0);
+        exit (1);
+    }
+    argv++;
+    argc--;
+    argv[0] = argv0;
+    while ((C = getopt (argc, argv, optstring)) != EOF) {
+        if (C == BADCH)
+            opterr++;
+        printf ("-%c ", C);
+        opi = strchr (optstring, C);
+        if (opi && opi[1] == ARGCH)
+            if (optarg)
+                printf ("\"%s\" ", optarg);
+            else
+                opterr++;
+    }
+    printf ("%s", ENDARGS);
+    while (optind < argc)
+        printf (" \"%s\"", argv[optind++]);
+    putchar ('\n');
+    return opterr;
+}
+