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151 lines
4.7 KiB
151 lines
4.7 KiB
/* |
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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 file is part of FFmpeg. |
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* |
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* FFmpeg 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 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg 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 FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <string.h> |
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#include <stdlib.h> |
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#include <errno.h> |
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#include "avformat.h" |
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#include "cmdutils.h" |
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#include "avstring.h" |
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#undef exit |
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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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av_strlcpy(buf, po->name, sizeof(buf)); |
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if (po->flags & HAS_ARG) { |
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av_strlcat(buf, " ", sizeof(buf)); |
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av_strlcat(buf, po->argname, sizeof(buf)); |
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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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static const OptionDef* find_option(const OptionDef *po, const char *name){ |
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while (po->name != NULL) { |
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if (!strcmp(name, po->name)) |
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break; |
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po++; |
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} |
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return po; |
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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, handleoptions=1; |
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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 (handleoptions && opt[0] == '-' && opt[1] != '\0') { |
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if (opt[1] == '-' && opt[2] == '\0') { |
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handleoptions = 0; |
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continue; |
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} |
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po= find_option(options, opt + 1); |
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if (!po->name) |
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po= find_option(options, "default"); |
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if (!po->name) { |
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unknown_opt: |
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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 if (po->flags & OPT_INT) { |
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*po->u.int_arg = atoi(arg); |
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} else if (po->flags & OPT_INT64) { |
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*po->u.int64_arg = strtoll(arg, (char **)NULL, 10); |
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} else if (po->flags & OPT_FLOAT) { |
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*po->u.float_arg = atof(arg); |
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} else if (po->flags & OPT_FUNC2) { |
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if(po->u.func2_arg(opt+1, arg)<0) |
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goto unknown_opt; |
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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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case AVERROR(EIO): |
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fprintf(stderr, "%s: I/O error occured\n" |
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"Usually that means that input file is truncated and/or corrupted.\n", |
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filename); |
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break; |
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case AVERROR(ENOMEM): |
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fprintf(stderr, "%s: memory allocation error occured\n", filename); |
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break; |
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case AVERROR_NOENT: |
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fprintf(stderr, "%s: no such file or directory\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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