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/* $Id: getopt.c,v 1.1 1991/05/13 18:36:55 chip Exp $
*
* A version of the public-domain getopt() function, as found
* in the SVID and fine Unix manuals everywhere.
*
* $Log: getopt.c,v $
* Revision 1.1 1991/05/13 18:36:55 chip
* Initial revision
*
*/
#include <stdio.h>
#include "config.h"
#include "misc.h"
/*----------------------------------------------------------------------
* Get command line options.
* This is essentially the public domain version, just reformatted to
* match the rest of the deliver program.
*/
#ifndef HAS_GETOPT
int opterr = 1;
int optind = 1;
int optopt = 0;
char *optarg = NULL;
#define ERR(what,c) \
if (!opterr) {} else fprintf(stderr,"%s: %s -- %c\n", argv[0], what, c)
int
getopt(argc, argv, opts)
int argc;
char **argv;
char *opts;
{
static int sp = 1;
int c;
char *cp;
if (sp == 1)
{
if (optind >= argc
|| argv[optind][0] != '-' || argv[optind][1] == '\0')
return EOF;
if (strcmp(argv[optind], "--") == NULL)
{
optind++;
return EOF;
}
}
optopt = c = argv[optind][sp];
if (c == ':' || (cp = strchr(opts, c)) == NULL)
{
ERR("illegal option", c);
if (argv[optind][++sp] == '\0')
{
optind++;
sp = 1;
}
return '?';
}
if (*++cp == ':')
{
if (argv[optind][sp + 1] != '\0')
optarg = &argv[optind++][sp + 1];
else if (++optind >= argc)
{
ERR("option requires an argument", c);
sp = 1;
return '?';
}
else
optarg = argv[optind++];
sp = 1;
}
else
{
if (argv[optind][++sp] == '\0')
{
sp = 1;
optind++;
}
optarg = NULL;
}
return c;
}
#endif /* !HAS_GETOPT */
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