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