/* | |
* Copyright (c) 1987, 1993, 1994, 1996 | |
* 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: | |
* 1. Redistributions of source code must retain the above copyright | |
* notice, this list of conditions and the following disclaimer. | |
* 2. 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. | |
* 3. All advertising materials mentioning features or use of this software | |
* must display the following acknowledgement: | |
* This product includes software developed by the University of | |
* California, Berkeley and its contributors. | |
* 4. Neither the name of the University 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 REGENTS 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 <assert.h> | |
#include <errno.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <string.h> | |
#include "getopt.h" | |
extern int opterr; /* if error message should be printed */ | |
extern int optind; /* index into parent argv vector */ | |
extern int optopt; /* character checked for validity */ | |
extern int optreset; /* reset getopt */ | |
extern char *optarg; /* argument associated with option */ | |
#define __P(x) x | |
#define _DIAGASSERT(x) assert(x) | |
static char * __progname __P((char *)); | |
int getopt_internal __P((int, char * const *, const char *)); | |
static char * | |
__progname(nargv0) | |
char * nargv0; | |
{ | |
char * tmp; | |
_DIAGASSERT(nargv0 != NULL); | |
tmp = strrchr(nargv0, '/'); | |
if (tmp) | |
tmp++; | |
else | |
tmp = nargv0; | |
return(tmp); | |
} | |
#define BADCH (int)'?' | |
#define BADARG (int)':' | |
#define EMSG "" | |
/* | |
* getopt -- | |
* Parse argc/argv argument vector. | |
*/ | |
int | |
getopt_internal(nargc, nargv, ostr) | |
int nargc; | |
char * const *nargv; | |
const char *ostr; | |
{ | |
static char *place = EMSG; /* option letter processing */ | |
char *oli; /* option letter list index */ | |
_DIAGASSERT(nargv != NULL); | |
_DIAGASSERT(ostr != NULL); | |
if (optreset || !*place) { /* update scanning pointer */ | |
optreset = 0; | |
if (optind >= nargc || *(place = nargv[optind]) != '-') { | |
place = EMSG; | |
return (-1); | |
} | |
if (place[1] && *++place == '-') { /* found "--" */ | |
/* ++optind; */ | |
place = EMSG; | |
return (-2); | |
} | |
} /* option letter okay? */ | |
if ((optopt = (int)*place++) == (int)':' || | |
!(oli = strchr(ostr, optopt))) { | |
/* | |
* if the user didn't specify '-' as an option, | |
* assume it means -1. | |
*/ | |
if (optopt == (int)'-') | |
return (-1); | |
if (!*place) | |
++optind; | |
if (opterr && *ostr != ':') | |
(void)fprintf(stderr, | |
"%s: illegal option -- %c\n", __progname(nargv[0]), optopt); | |
return (BADCH); | |
} | |
if (*++oli != ':') { /* don't need argument */ | |
optarg = NULL; | |
if (!*place) | |
++optind; | |
} else { /* need an argument */ | |
if (*place) /* no white space */ | |
optarg = place; | |
else if (nargc <= ++optind) { /* no arg */ | |
place = EMSG; | |
if ((opterr) && (*ostr != ':')) | |
(void)fprintf(stderr, | |
"%s: option requires an argument -- %c\n", | |
__progname(nargv[0]), optopt); | |
return (BADARG); | |
} else /* white space */ | |
optarg = nargv[optind]; | |
place = EMSG; | |
++optind; | |
} | |
return (optopt); /* dump back option letter */ | |
} | |
#if 0 | |
/* | |
* getopt -- | |
* Parse argc/argv argument vector. | |
*/ | |
int | |
getopt2(nargc, nargv, ostr) | |
int nargc; | |
char * const *nargv; | |
const char *ostr; | |
{ | |
int retval; | |
if ((retval = getopt_internal(nargc, nargv, ostr)) == -2) { | |
retval = -1; | |
++optind; | |
} | |
return(retval); | |
} | |
#endif | |
/* | |
* getopt_long -- | |
* Parse argc/argv argument vector. | |
*/ | |
int | |
getopt_long(nargc, nargv, options, long_options, index) | |
int nargc; | |
char ** nargv; | |
char * options; | |
struct option * long_options; | |
int * index; | |
{ | |
int retval; | |
_DIAGASSERT(nargv != NULL); | |
_DIAGASSERT(options != NULL); | |
_DIAGASSERT(long_options != NULL); | |
/* index may be NULL */ | |
if ((retval = getopt_internal(nargc, nargv, options)) == -2) { | |
char *current_argv = nargv[optind++] + 2, *has_equal; | |
int i, current_argv_len, match = -1; | |
if (*current_argv == '\0') { | |
return(-1); | |
} | |
if ((has_equal = strchr(current_argv, '=')) != NULL) { | |
current_argv_len = has_equal - current_argv; | |
has_equal++; | |
} else | |
current_argv_len = strlen(current_argv); | |
for (i = 0; long_options[i].name; i++) { | |
if (strncmp(current_argv, long_options[i].name, current_argv_len)) | |
continue; | |
if (strlen(long_options[i].name) == (unsigned)current_argv_len) { | |
match = i; | |
break; | |
} | |
if (match == -1) | |
match = i; | |
} | |
if (match != -1) { | |
if (long_options[match].has_arg == required_argument || | |
long_options[match].has_arg == optional_argument) { | |
if (has_equal) | |
optarg = has_equal; | |
else | |
optarg = nargv[optind++]; | |
} | |
if ((long_options[match].has_arg == required_argument) | |
&& (optarg == NULL)) { | |
/* | |
* Missing argument, leading : | |
* indicates no error should be generated | |
*/ | |
if ((opterr) && (*options != ':')) | |
(void)fprintf(stderr, | |
"%s: option requires an argument -- %s\n", | |
__progname(nargv[0]), current_argv); | |
return (BADARG); | |
} | |
} else { /* No matching argument */ | |
if ((opterr) && (*options != ':')) | |
(void)fprintf(stderr, | |
"%s: illegal option -- %s\n", __progname(nargv[0]), current_argv); | |
return (BADCH); | |
} | |
if (long_options[match].flag) { | |
*long_options[match].flag = long_options[match].val; | |
retval = 0; | |
} else | |
retval = long_options[match].val; | |
if (index) | |
*index = match; | |
} | |
return(retval); | |
} |