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/*
* musl as a whole is licensed under the following standard MIT license:
*
* ----------------------------------------------------------------------
* Copyright © 2005-2020 Rich Felker, et al.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
* ----------------------------------------------------------------------
*/
//#define _BSD_SOURCE
//#include <unistd.h>
#include <wchar.h>
#include <string.h>
#include <limits.h>
#include <stdlib.h>
#include <stdio.h>
#include <wsutil/ws_getopt.h>
char *ws_optarg;
int ws_optind=1, ws_opterr=1, ws_optopt, ws_optpos, ws_optreset=0;
void __getopt_msg(const char *a, const char *b, const char *c, size_t l)
{
FILE *f = stderr;
fputs(a, f);
fwrite(b, strlen(b), 1, f);
fwrite(c, 1, l, f);
putc('\n', f);
}
int ws_getopt(int argc, char * const argv[], const char *optstring)
{
int i;
wchar_t c, d;
int k, l;
char *optchar;
if (!ws_optind || ws_optreset) {
ws_optreset = 0;
ws_optpos = 0;
ws_optind = 1;
}
if (ws_optind >= argc || !argv[ws_optind])
return -1;
if (argv[ws_optind][0] != '-') {
if (optstring[0] == '-') {
ws_optarg = argv[ws_optind++];
return 1;
}
return -1;
}
if (!argv[ws_optind][1])
return -1;
if (argv[ws_optind][1] == '-' && !argv[ws_optind][2])
return ws_optind++, -1;
if (!ws_optpos) ws_optpos++;
if ((k = mbtowc(&c, argv[ws_optind]+ws_optpos, MB_LEN_MAX)) < 0) {
k = 1;
c = 0xfffd; /* replacement char */
}
optchar = argv[ws_optind]+ws_optpos;
ws_optpos += k;
if (!argv[ws_optind][ws_optpos]) {
ws_optind++;
ws_optpos = 0;
}
if (optstring[0] == '-' || optstring[0] == '+')
optstring++;
i = 0;
d = 0;
do {
l = mbtowc(&d, optstring+i, MB_LEN_MAX);
if (l>0) i+=l; else i++;
} while (l && d != c);
if (d != c || c == ':') {
ws_optopt = c;
if (optstring[0] != ':' && ws_opterr)
__getopt_msg(argv[0], ": unrecognized option: ", optchar, k);
return '?';
}
if (optstring[i] == ':') {
ws_optarg = 0;
if (optstring[i+1] != ':' || ws_optpos) {
ws_optarg = argv[ws_optind++] + ws_optpos;
ws_optpos = 0;
}
if (ws_optind > argc) {
ws_optopt = c;
if (optstring[0] == ':') return ':';
if (ws_opterr) __getopt_msg(argv[0],
": option requires an argument: ",
optchar, k);
return '?';
}
}
return c;
}
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