cosmetics, expand all tabs to four spaces.
[libav.git] / cmdutils.c
CommitLineData
01310af2
FB
1/*
2 * Various utilities for command line tools
3 * Copyright (c) 2000-2003 Fabrice Bellard
4 *
b78e7197
DB
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
01310af2
FB
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
01310af2 11 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
01310af2
FB
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
b78e7197 18 * License along with FFmpeg; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
01310af2 20 */
02d504a7 21#define HAVE_AV_CONFIG_H
01310af2 22#include "avformat.h"
d705e4a6 23#include "common.h"
01310af2
FB
24
25#include "cmdutils.h"
26
c367d067
MN
27#undef exit
28
02d504a7 29void show_help_options(const OptionDef *options, const char *msg, int mask, int value)
01310af2
FB
30{
31 const OptionDef *po;
02d504a7 32 int first;
01310af2 33
02d504a7
FB
34 first = 1;
35 for(po = options; po->name != NULL; po++) {
36 char buf[64];
37 if ((po->flags & mask) == value) {
38 if (first) {
39 printf("%s", msg);
40 first = 0;
41 }
0ecca7a4 42 pstrcpy(buf, sizeof(buf), po->name);
02d504a7 43 if (po->flags & HAS_ARG) {
0ecca7a4
MN
44 pstrcat(buf, sizeof(buf), " ");
45 pstrcat(buf, sizeof(buf), po->argname);
01310af2 46 }
02d504a7 47 printf("-%-17s %s\n", buf, po->help);
01310af2
FB
48 }
49 }
50}
51
fccfc475 52static const OptionDef* find_option(const OptionDef *po, const char *name){
8bbf6db9
MN
53 while (po->name != NULL) {
54 if (!strcmp(name, po->name))
55 break;
56 po++;
57 }
58 return po;
59}
60
01310af2
FB
61void parse_options(int argc, char **argv, const OptionDef *options)
62{
63 const char *opt, *arg;
b0d7bc1e 64 int optindex, handleoptions=1;
01310af2
FB
65 const OptionDef *po;
66
67 /* parse options */
68 optindex = 1;
69 while (optindex < argc) {
70 opt = argv[optindex++];
115329f1 71
84bf226b
TL
72 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
73 if (opt[1] == '-' && opt[2] == '\0') {
74 handleoptions = 0;
75 continue;
76 }
8bbf6db9
MN
77 po= find_option(options, opt + 1);
78 if (!po->name)
79 po= find_option(options, "default");
01310af2 80 if (!po->name) {
8bbf6db9 81unknown_opt:
01310af2
FB
82 fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
83 exit(1);
84 }
85 arg = NULL;
86 if (po->flags & HAS_ARG) {
87 arg = argv[optindex++];
88 if (!arg) {
89 fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt);
90 exit(1);
91 }
92 }
93 if (po->flags & OPT_STRING) {
94 char *str;
02d504a7 95 str = av_strdup(arg);
01310af2
FB
96 *po->u.str_arg = str;
97 } else if (po->flags & OPT_BOOL) {
98 *po->u.int_arg = 1;
26d4f26b
MN
99 } else if (po->flags & OPT_INT) {
100 *po->u.int_arg = atoi(arg);
ffdf9a1f
BC
101 } else if (po->flags & OPT_INT64) {
102 *po->u.int64_arg = atoll(arg);
1f631450
MN
103 } else if (po->flags & OPT_FLOAT) {
104 *po->u.float_arg = atof(arg);
8bbf6db9
MN
105 } else if (po->flags & OPT_FUNC2) {
106 if(po->u.func2_arg(opt+1, arg)<0)
107 goto unknown_opt;
01310af2 108 } else {
bb270c08 109 po->u.func_arg(arg);
01310af2
FB
110 }
111 } else {
112 parse_arg_file(opt);
113 }
114 }
115}
116
117void print_error(const char *filename, int err)
118{
119 switch(err) {
120 case AVERROR_NUMEXPECTED:
121 fprintf(stderr, "%s: Incorrect image filename syntax.\n"
122 "Use '%%d' to specify the image number:\n"
123 " for img1.jpg, img2.jpg, ..., use 'img%%d.jpg';\n"
115329f1 124 " for img001.jpg, img002.jpg, ..., use 'img%%03d.jpg'.\n",
01310af2
FB
125 filename);
126 break;
127 case AVERROR_INVALIDDATA:
128 fprintf(stderr, "%s: Error while parsing header\n", filename);
129 break;
130 case AVERROR_NOFMT:
131 fprintf(stderr, "%s: Unknown format\n", filename);
132 break;
45ce5ddb
KS
133 case AVERROR_IO:
134 fprintf(stderr, "%s: I/O error occured\n"
bb270c08
DB
135 "Usually that means that input file is truncated and/or corrupted.\n",
136 filename);
45ce5ddb
KS
137 break;
138 case AVERROR_NOMEM:
139 fprintf(stderr, "%s: memory allocation error occured\n", filename);
140 break;
01310af2
FB
141 default:
142 fprintf(stderr, "%s: Error while opening file\n", filename);
143 break;
144 }
145}