140 lines
3.9 KiB
C
140 lines
3.9 KiB
C
/*
|
|
* $Id: getopt.c 137 2008-03-17 12:35:02Z baconevi $
|
|
*
|
|
* {License}
|
|
*/
|
|
|
|
#include <ase/utl/getopt.h>
|
|
|
|
/*
|
|
* Copyright (c) 1987-2002 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* A. Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
* B. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
* C. Neither the names of the copyright holders nor the names of its
|
|
* contributors may be used to endorse or promote products derived from this
|
|
* software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
|
|
* IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
|
|
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#if 0
|
|
/* declarations to provide consistent linkage */
|
|
extern char *optarg;
|
|
extern int optind;
|
|
extern int opterr;
|
|
|
|
int opterr = 1, /* if error message should be printed */
|
|
optind = 1, /* index into parent argv vector */
|
|
optopt, /* character checked for validity */
|
|
optreset; /* reset getopt */
|
|
char *optarg; /* argument associated with option */
|
|
#endif
|
|
|
|
#define BADCH ASE_T('?')
|
|
#define BADARG ASE_T(':')
|
|
#define EMSG ASE_T("")
|
|
|
|
#define optstr opt->str
|
|
#define optarg opt->arg
|
|
#define optind opt->ind
|
|
#define optopt opt->opt
|
|
#define place opt->cur
|
|
|
|
ase_cint_t ase_getopt (int argc, ase_char_t* const* argv, ase_opt_t* opt)
|
|
{
|
|
ase_char_t* oli; /* option letter list index */
|
|
|
|
if (!*place)
|
|
{
|
|
/* update scanning pointer */
|
|
if (optind >= argc || *(place = argv[optind]) != ASE_T('-'))
|
|
{
|
|
place = EMSG;
|
|
return ASE_CHAR_EOF;
|
|
}
|
|
if (place[1] && *++place == ASE_T('-'))
|
|
{
|
|
/* found "--" */
|
|
++optind;
|
|
place = EMSG;
|
|
return ASE_CHAR_EOF;
|
|
}
|
|
} /* option letter okay? */
|
|
|
|
if ((optopt = (int)*place++) == ASE_T(':') ||
|
|
!(oli = strchr(optstr, optopt)))
|
|
{
|
|
/*
|
|
* if the user didn't specify '-' as an option,
|
|
* assume it means EOF.
|
|
*/
|
|
if (optopt == (int)'-') return ASE_CHAR_EOF;
|
|
if (!*place) ++optind;
|
|
#if 0
|
|
if (opterr && *optstr != ASE_T(':'))
|
|
(void)fprintf(stderr,
|
|
"%s: illegal option -- %c\n", __FILE__, optopt);
|
|
#endif
|
|
return BADCH;
|
|
}
|
|
|
|
if (*++oli != ASE_T(':'))
|
|
{
|
|
/* don't need argument */
|
|
optarg = ASE_NULL;
|
|
if (!*place) ++optind;
|
|
}
|
|
else
|
|
{
|
|
/* need an argument */
|
|
|
|
if (*place) optarg = place; /* no white space */
|
|
else if (argc <= ++optind)
|
|
{
|
|
/* no arg */
|
|
place = EMSG;
|
|
if (*optstr == ASE_T(':')) return BADARG;
|
|
#if 0
|
|
if (opterr)
|
|
(void)fprintf(stderr,
|
|
"%s: option requires an argument -- %c\n",
|
|
__FILE__, optopt);
|
|
#endif
|
|
return BADCH;
|
|
}
|
|
else
|
|
{
|
|
/* white space */
|
|
optarg = argv[optind];
|
|
}
|
|
place = EMSG;
|
|
++optind;
|
|
}
|
|
|
|
return optopt; /* dump back option letter */
|
|
}
|
|
|
|
|