mirror of
https://github.com/FFmpeg/FFmpeg.git
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114 lines
3.4 KiB
C
114 lines
3.4 KiB
C
/*
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* Various utilities for command line tools
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* Copyright (c) 2000-2003 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#define HAVE_AV_CONFIG_H
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#include "avformat.h"
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#include "common.h"
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#include "cmdutils.h"
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void show_help_options(const OptionDef *options, const char *msg, int mask, int value)
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{
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const OptionDef *po;
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int first;
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first = 1;
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for(po = options; po->name != NULL; po++) {
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char buf[64];
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if ((po->flags & mask) == value) {
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if (first) {
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printf("%s", msg);
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first = 0;
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}
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strcpy(buf, po->name);
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if (po->flags & HAS_ARG) {
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strcat(buf, " ");
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strcat(buf, po->argname);
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}
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printf("-%-17s %s\n", buf, po->help);
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}
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}
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}
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void parse_options(int argc, char **argv, const OptionDef *options)
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{
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const char *opt, *arg;
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int optindex;
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const OptionDef *po;
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/* parse options */
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optindex = 1;
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while (optindex < argc) {
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opt = argv[optindex++];
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if (opt[0] == '-' && opt[1] != '\0') {
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po = options;
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while (po->name != NULL) {
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if (!strcmp(opt + 1, po->name))
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break;
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po++;
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}
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if (!po->name) {
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fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
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exit(1);
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}
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arg = NULL;
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if (po->flags & HAS_ARG) {
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arg = argv[optindex++];
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if (!arg) {
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fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt);
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exit(1);
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}
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}
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if (po->flags & OPT_STRING) {
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char *str;
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str = av_strdup(arg);
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*po->u.str_arg = str;
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} else if (po->flags & OPT_BOOL) {
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*po->u.int_arg = 1;
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} else {
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po->u.func_arg(arg);
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}
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} else {
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parse_arg_file(opt);
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}
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}
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}
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void print_error(const char *filename, int err)
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{
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switch(err) {
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case AVERROR_NUMEXPECTED:
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fprintf(stderr, "%s: Incorrect image filename syntax.\n"
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"Use '%%d' to specify the image number:\n"
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" for img1.jpg, img2.jpg, ..., use 'img%%d.jpg';\n"
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" for img001.jpg, img002.jpg, ..., use 'img%%03d.jpg'.\n",
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filename);
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break;
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case AVERROR_INVALIDDATA:
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fprintf(stderr, "%s: Error while parsing header\n", filename);
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break;
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case AVERROR_NOFMT:
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fprintf(stderr, "%s: Unknown format\n", filename);
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break;
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default:
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fprintf(stderr, "%s: Error while opening file\n", filename);
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break;
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}
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}
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