QT RLE encoder
[libav.git] / cmdutils.c
1 /*
2 * Various utilities for command line tools
3 * Copyright (c) 2000-2003 Fabrice Bellard
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
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
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "avformat.h"
23 #include "cmdutils.h"
24 #include "avstring.h"
25
26 #undef exit
27
28 void show_help_options(const OptionDef *options, const char *msg, int mask, int value)
29 {
30 const OptionDef *po;
31 int first;
32
33 first = 1;
34 for(po = options; po->name != NULL; po++) {
35 char buf[64];
36 if ((po->flags & mask) == value) {
37 if (first) {
38 printf("%s", msg);
39 first = 0;
40 }
41 av_strlcpy(buf, po->name, sizeof(buf));
42 if (po->flags & HAS_ARG) {
43 av_strlcat(buf, " ", sizeof(buf));
44 av_strlcat(buf, po->argname, sizeof(buf));
45 }
46 printf("-%-17s %s\n", buf, po->help);
47 }
48 }
49 }
50
51 static const OptionDef* find_option(const OptionDef *po, const char *name){
52 while (po->name != NULL) {
53 if (!strcmp(name, po->name))
54 break;
55 po++;
56 }
57 return po;
58 }
59
60 void parse_options(int argc, char **argv, const OptionDef *options)
61 {
62 const char *opt, *arg;
63 int optindex, handleoptions=1;
64 const OptionDef *po;
65
66 /* parse options */
67 optindex = 1;
68 while (optindex < argc) {
69 opt = argv[optindex++];
70
71 if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
72 if (opt[1] == '-' && opt[2] == '\0') {
73 handleoptions = 0;
74 continue;
75 }
76 po= find_option(options, opt + 1);
77 if (!po->name)
78 po= find_option(options, "default");
79 if (!po->name) {
80 unknown_opt:
81 fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
82 exit(1);
83 }
84 arg = NULL;
85 if (po->flags & HAS_ARG) {
86 arg = argv[optindex++];
87 if (!arg) {
88 fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt);
89 exit(1);
90 }
91 }
92 if (po->flags & OPT_STRING) {
93 char *str;
94 str = av_strdup(arg);
95 *po->u.str_arg = str;
96 } else if (po->flags & OPT_BOOL) {
97 *po->u.int_arg = 1;
98 } else if (po->flags & OPT_INT) {
99 *po->u.int_arg = atoi(arg);
100 } else if (po->flags & OPT_INT64) {
101 *po->u.int64_arg = strtoll(arg, (char **)NULL, 10);
102 } else if (po->flags & OPT_FLOAT) {
103 *po->u.float_arg = atof(arg);
104 } else if (po->flags & OPT_FUNC2) {
105 if(po->u.func2_arg(opt+1, arg)<0)
106 goto unknown_opt;
107 } else {
108 po->u.func_arg(arg);
109 }
110 } else {
111 parse_arg_file(opt);
112 }
113 }
114 }
115
116 void print_error(const char *filename, int err)
117 {
118 switch(err) {
119 case AVERROR_NUMEXPECTED:
120 fprintf(stderr, "%s: Incorrect image filename syntax.\n"
121 "Use '%%d' to specify the image number:\n"
122 " for img1.jpg, img2.jpg, ..., use 'img%%d.jpg';\n"
123 " for img001.jpg, img002.jpg, ..., use 'img%%03d.jpg'.\n",
124 filename);
125 break;
126 case AVERROR_INVALIDDATA:
127 fprintf(stderr, "%s: Error while parsing header\n", filename);
128 break;
129 case AVERROR_NOFMT:
130 fprintf(stderr, "%s: Unknown format\n", filename);
131 break;
132 case AVERROR_IO:
133 fprintf(stderr, "%s: I/O error occured\n"
134 "Usually that means that input file is truncated and/or corrupted.\n",
135 filename);
136 break;
137 case AVERROR_NOMEM:
138 fprintf(stderr, "%s: memory allocation error occured\n", filename);
139 break;
140 case AVERROR_NOENT:
141 fprintf(stderr, "%s: no such file or directory\n", filename);
142 break;
143 default:
144 fprintf(stderr, "%s: Error while opening file\n", filename);
145 break;
146 }
147 }