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/*
* getopt.c
*
* Replacement for a Unix style getopt function
*
*/
#include <stdio.h>
#include <string.h>
#ifndef __MSDOS__
#define cdecl
#endif
int optind = 1;
int optopt = 0;
const char *optarg = NULL;
int cdecl getopt (int argc, char *argv[], const char *options)
{
static pos = 1;
const char *p;
if (optind >= argc || argv[optind][0] != '-' || argv[optind][1] == 0)
return EOF;
optopt = argv[optind][pos++];
optarg = NULL;
if (argv[optind][pos] == 0)
{ pos = 1; optind++; }
p = strchr (options, optopt);
if (optopt == ':' || p == NULL) {
fputs ("illegal option -- ", stderr);
goto error;
} else if (p[1] == ':')
if (optind >= argc) {
fputs ("option requires an argument -- ", stderr);
goto error;
} else {
optarg = argv[optind];
if (pos != 1)
optarg += pos;
pos = 1; optind++;
}
return optopt;
error:
fputc (optopt, stderr);
fputc ('\n', stderr);
return '?';
}/* getopt */
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