mirror of https://github.com/FFmpeg/FFmpeg.git
Originally committed as revision 1936 to svn://svn.ffmpeg.org/ffmpeg/trunkpull/126/head
Fabrice Bellard
22 years ago
parent
a86b921c7d
commit
01310af292
5 changed files with 1593 additions and 200 deletions
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/*
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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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#include <stdlib.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include "common.h" |
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#include "avformat.h" |
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#include "cmdutils.h" |
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void show_help_options(const OptionDef *options) |
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{ |
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const OptionDef *po; |
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int i, expert, first; |
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printf("Main options are:\n"); |
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for(i=0;i<2;i++) { |
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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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expert = (po->flags & OPT_EXPERT) != 0; |
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if (expert == i) { |
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if (expert && first) { |
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printf("\nAdvanced options are:\n"); |
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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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} |
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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 = 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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@ -0,0 +1,25 @@ |
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#ifndef _CMD_UTILS_H |
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#define _CMD_UTILS_H |
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typedef struct { |
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const char *name; |
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int flags; |
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#define HAS_ARG 0x0001 |
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#define OPT_BOOL 0x0002 |
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#define OPT_EXPERT 0x0004 |
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#define OPT_STRING 0x0008 |
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union { |
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void (*func_arg)(const char *); |
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int *int_arg; |
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char **str_arg; |
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} u; |
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const char *help; |
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const char *argname; |
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} OptionDef; |
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void show_help_options(const OptionDef *options); |
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void parse_options(int argc, char **argv, const OptionDef *options); |
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void parse_arg_file(const char *filename); |
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void print_error(const char *filename, int err); |
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#endif /* _CMD_UTILS_H */ |
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