mirror of
https://github.com/librempeg/librempeg
synced 2024-11-22 18:49:58 +00:00
85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
|
/*
|
||
|
|
* This file is part of Libav.
|
||
|
|
*
|
||
|
|
* Libav is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU Lesser General Public
|
||
|
|
* License as published by the Free Software Foundation; either
|
||
|
|
* version 2.1 of the License, or (at your option) any later version.
|
||
|
|
*
|
||
|
|
* Libav is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
* Lesser General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU Lesser General Public
|
||
|
|
* License along with Libav; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This file was copied from the following newsgroup posting:
|
||
|
|
*
|
||
|
|
* Newsgroups: mod.std.unix
|
||
|
|
* Subject: public domain AT&T getopt source
|
||
|
|
* Date: 3 Nov 85 19:34:15 GMT
|
||
|
|
*
|
||
|
|
* Here's something you've all been waiting for: the AT&T public domain
|
||
|
|
* source for getopt(3). It is the code which was given out at the 1985
|
||
|
|
* UNIFORUM conference in Dallas. I obtained it by electronic mail
|
||
|
|
* directly from AT&T. The people there assure me that it is indeed
|
||
|
|
* in the public domain.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define EOF (-1)
|
||
|
|
|
||
|
|
static int opterr = 1;
|
||
|
|
static int optind = 1;
|
||
|
|
static int optopt;
|
||
|
|
static char *optarg;
|
||
|
|
|
||
|
|
#undef fprintf
|
||
|
|
|
||
|
|
static int getopt(int argc, char *argv[], char *opts)
|
||
|
|
{
|
||
|
|
static int sp = 1;
|
||
|
|
int c;
|
||
|
|
char *cp;
|
||
|
|
|
||
|
|
if (sp == 1)
|
||
|
|
if (optind >= argc ||
|
||
|
|
argv[optind][0] != '-' || argv[optind][1] == '\0')
|
||
|
|
return EOF;
|
||
|
|
else if (!strcmp(argv[optind], "--")) {
|
||
|
|
optind++;
|
||
|
|
return EOF;
|
||
|
|
}
|
||
|
|
optopt = c = argv[optind][sp];
|
||
|
|
if (c == ':' || (cp = strchr(opts, c)) == NULL) {
|
||
|
|
fprintf(stderr, ": illegal option -- %c\n", c);
|
||
|
|
if (argv[optind][++sp] == '\0') {
|
||
|
|
optind++;
|
||
|
|
sp = 1;
|
||
|
|
}
|
||
|
|
return '?';
|
||
|
|
}
|
||
|
|
if (*++cp == ':') {
|
||
|
|
if (argv[optind][sp+1] != '\0')
|
||
|
|
optarg = &argv[optind++][sp+1];
|
||
|
|
else if(++optind >= argc) {
|
||
|
|
fprintf(stderr, ": option requires an argument -- %c\n", c);
|
||
|
|
sp = 1;
|
||
|
|
return '?';
|
||
|
|
} else
|
||
|
|
optarg = argv[optind++];
|
||
|
|
sp = 1;
|
||
|
|
} else {
|
||
|
|
if (argv[optind][++sp] == '\0') {
|
||
|
|
sp = 1;
|
||
|
|
optind++;
|
||
|
|
}
|
||
|
|
optarg = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
return c;
|
||
|
|
}
|