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/*
$Id: getopt.c,v 1.14 2010-07-14 01:54:51-07 bll Exp $
$Source: /home/bll/DI/di/RCS/getopt.c,v $
*/
#include "config.h"
#if ! _lib_getopt
/*
*
* $Id: getopt.c,v 1.14 2010-07-14 01:54:51-07 bll Exp $
*
* getopt - get option letter from argv
*
* from Cnews by Henry Spencer
*
*/
#if _hdr_stdio
# include <stdio.h>
#endif
#if _hdr_stdlib
# include <stdlib.h>
#endif
#if _hdr_string
# include <string.h>
#endif
#if _hdr_strings
# include <strings.h>
#endif
char *optarg; /* Global argument pointer. */
int optind = 0; /* Global argv index. */
static char *scan = NULL; /* Private scan pointer. */
int
#if _proto_stdc
getopt (int argc, char * const argv [], const char *optstring)
#else
getopt (argc, argv, optstring)
int argc;
char * const argv[];
const char *optstring;
#endif
{
char c;
char *place;
optarg = NULL;
if (scan == NULL || *scan == '\0')
{
if (optind == 0)
{
optind++;
}
if (optind >= argc || argv[optind][0] != '-' ||
argv[optind][1] == '\0')
{
return(EOF);
}
if (strcmp(argv[optind], "--")==0)
{
optind++;
return(EOF);
}
scan = argv[optind]+1;
optind++;
}
c = *scan++;
place = strchr(optstring, c);
if (place == NULL || c == ':')
{
fprintf(stderr, "%s: unknown option -%c\n", argv[0], c);
return('?');
}
place++;
if (*place == ':')
{
if (*scan != '\0')
{
optarg = scan;
scan = NULL;
}
else if (optind < argc)
{
optarg = argv[optind];
optind++;
}
else
{
fprintf(stderr, "%s: -%c argument missing\n", argv[0], c);
return('?');
}
}
return(c);
}
#else
extern int debug;
#endif
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