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/* getopt.c (slightly modified by O.Garcia, 12/4/92) */
/* now it accepts either '-' or '/' as switch character */
/*
Newsgroups: mod.std.unix
Subject: public domain AT&T getopt source
Date: 3 Nov 85 19:34:15 GMT
Here's something you've all been waiting for: the AT&T public domain
source for getopt(3). It is the code which was given out at the 1985
UNIFORUM conference in Dallas. I obtained it by electronic mail
directly from AT&T. The people there assure me that it is indeed
in the public domain.
*/
#if defined(_MSC_VER)
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#define ERR(s, c) if(opterr){fprintf(stderr,"%s%s%c\n",argv[0],s,c);}
int opterr = 1;
int optind = 1;
int optopt;
char *optarg;
int
getopt (int argc, char **argv, char *opts)
{
static int sp = 1;
register int c;
register char *cp;
if (sp == 1)
if (optind >= argc ||
(argv[optind][0] != '-' && argv[optind][0] != '/')
|| argv[optind][1] == '\0')
return (EOF);
else if (strcmp (argv[optind], "--") == 0 ||
strcmp (argv[optind], "//") == 0)
{
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
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