newlib/winsup/cygwin/lib/getopt.c

392 lines
9.4 KiB
C

/*
* 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "getopt.h"
int opterr = 1; /* if error message should be printed */
int optind = 1; /* index into parent argv vector */
int optopt; /* character checked for validity */
int optreset; /* reset getopt */
char *optarg; /* argument associated with option */
static char * __progname (char *);
int getopt_internal (int, char * const *, const char *);
static char * __progname(nargv0)
char * nargv0;
{
char * 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 const char *place = EMSG; /* option letter processing */
char *oli; /* option letter list index */
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 = (char *)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 */
}
/*
* getopt --
* Parse argc/argv argument vector.
*/
int
getopt(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);
}
/*
* 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;
if ((retval = getopt_internal(nargc, nargv, options)) == -2) {
char *current_argv = nargv[optind++] + 2, *has_equal;
int i, match = -1;
size_t current_argv_len;
if (*current_argv == '\0') {
return(-1);
}
if ((has_equal = strchr(current_argv, '='))) {
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) == current_argv_len) {
match = i;
break;
}
if (match == -1)
match = i;
}
if (match != -1) {
if (long_options[match].has_arg) {
if (has_equal)
optarg = has_equal;
else
optarg = nargv[optind++];
}
if ((long_options[match].has_arg == 1) && (optarg == NULL)) {
/* Missing option, leading : indecates no error */
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);
}
/*****************************************************************/
#include <stdio.h>
#include "getopt.h"
/* Stuff for getopt */
static struct option long_options[] = {
{ (char *)"simple", 0, NULL, 's' },
{ (char *)"t", 0, NULL, 't' },
{ (char *)"u", 1, NULL, 'u' },
{ (char *)"v", 0, NULL, 'v' },
/* Do not reorder the following */
{ (char *)"yy", 0, NULL, 'Y' },
{ (char *)"y", 0, NULL, 'y' },
{ (char *)"zz", 0, NULL, 'z' },
{ (char *)"zzz", 0, NULL, 'Z' },
{ NULL, 0, NULL, 0 }
};
extern char * optarg;
extern int optreset;
extern int optind;
int test_getopt_long(args, expected_result)
char ** args, * expected_result;
{
char actual_result[256];
int count, pass, i;
pass = 0;
optind = 1;
optreset = 1;
for (count = 0; args[count]; count++);
while ((i = getopt_long(count, args, (char *)"ab:", long_options, NULL)) != EOF) {
switch(i) {
case 'u':
if (strcmp(optarg, "bogus")) {
printf("--u option does not have bogus optarg.\n");
return(1);
}
case 'Y':
case 's':
case 't':
case 'v':
case 'y':
case 'z':
actual_result[pass++] = i;
break;
default:
actual_result[pass++] = '?';
break;
}
}
actual_result[pass] = '\0';
return(strcmp(actual_result, expected_result));
}
#if 0
int usage(value)
int value;
{
printf("test_getopt [-d]\n");
exit(value);
}
#endif
#if 0
/*
* Static arglists for individual tests
* This is ugly and maybe I should just use a variable arglist
*/
const char *argv1[] = { "Test simple", "--s", NULL };
const char *argv2[] = { "Test multiple", "--s", "--t", NULL };
const char *argv3[] = { "Test optarg with space", "--u", "bogus", NULL };
const char *argv4[] = { "Test optarg with equal", "--u=bogus", NULL };
const char *argv5[] = { "Test complex", "--s", "--t", "--u", "bogus", "--v", NULL };
const char *argv6[] = { "Test exact", "--y", NULL };
const char *argv7[] = { "Test abbr", "--z", NULL };
const char *argv8[] = { "Test simple termination", "--z", "foo", "--z", NULL };
const char *argv9[] = { "Test -- termination", "--z", "--", "--z", NULL };
int debug = 0;
int main(argc, argv)
int argc;
char ** argv;
{
int i;
/* Of course if getopt() has a bug this won't work */
while ((i = getopt(argc, argv, "d")) != EOF) {
switch(i) {
case 'd':
debug++;
break;
default:
usage(1);
break;
}
}
/* Test getopt_long() */
{
if (test_getopt_long(argv1, "s")) {
printf("Test simple failed.\n");
exit(1);
}
}
/* Test multiple arguments */
{
if (test_getopt_long(argv2, "st")) {
printf("Test multiple failed.\n");
exit(1);
}
}
/* Test optarg with space */
{
if (test_getopt_long(argv3, "u")) {
printf("Test optarg with space failed.\n");
exit(1);
}
}
/* Test optarg with equal */
{
if (test_getopt_long(argv4, "u")) {
printf("Test optarg with equal failed.\n");
exit(1);
}
}
/* Test complex */
{
if (test_getopt_long(argv5, "stuv")) {
printf("Test complex failed.\n");
exit(1);
}
}
/* Test that exact matches override abbr matches */
{
if (test_getopt_long(argv6, "y")) {
printf("Test exact failed.\n");
exit(1);
}
}
/* Test that abbr matches are first match. */
{
if (test_getopt_long(argv7, "z")) {
printf("Test abbr failed.\n");
exit(1);
}
}
/* Test that option termination succeeds */
{
if (test_getopt_long(argv8, "z")) {
printf("Test simple termination failed.\n");
exit(1);
}
}
/* Test that "--" termination succeeds */
{
if (test_getopt_long(argv9, "z")) {
printf("Test -- termination failed.\n");
exit(1);
}
}
exit(0);
}
#endif