getopt.c revision 7c2fbfb345896881c631598ee3852ce9ce33fb07
/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2008 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
#include <ast.h>
#undef _lib_getopt /* we can satisfy the api */
#if _lib_getopt
NoN(getopt)
#else
#undef _BLD_ast /* enable ast imports since we're user static */
#include <error.h>
#include <option.h>
int opterr = 1;
int optind = 1;
int optopt = 0;
char* optarg = 0;
static int lastoptind;
extern int
getopt(int argc, char* const* argv, const char* optstring)
{
int n;
NoP(argc);
opt_info.index = (optind > 1 || optind == lastoptind) ? optind : 0;
if (opt_info.index >= argc)
return -1;
switch (n = optget((char**)argv, optstring))
{
case ':':
n = '?';
/*FALLTHROUGH*/
case '?':
if (opterr && (!optstring || *optstring != ':'))
{
if (!error_info.id)
error_info.id = argv[0];
errormsg(NiL, 2, opt_info.arg);
}
optopt = opt_info.option[1];
break;
case 0:
n = -1;
break;
}
optarg = opt_info.arg;
lastoptind = optind = opt_info.index;
return n;
}
#endif