Commit | Line | Data |
---|---|---|
01310af2 FB |
1 | /* |
2 | * Various utilities for command line tools | |
3 | * Copyright (c) 2000-2003 Fabrice Bellard | |
4 | * | |
5 | * This library is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU Lesser General Public | |
7 | * License as published by the Free Software Foundation; either | |
8 | * version 2 of the License, or (at your option) any later version. | |
9 | * | |
10 | * This library is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * Lesser General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU Lesser General Public | |
16 | * License along with this library; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
18 | */ | |
19 | #include <stdlib.h> | |
20 | #include <stdio.h> | |
21 | #include <string.h> | |
22 | ||
23 | #include "common.h" | |
24 | #include "avformat.h" | |
25 | ||
26 | #include "cmdutils.h" | |
27 | ||
28 | void show_help_options(const OptionDef *options) | |
29 | { | |
30 | const OptionDef *po; | |
31 | int i, expert, first; | |
32 | ||
33 | printf("Main options are:\n"); | |
34 | for(i=0;i<2;i++) { | |
35 | first = 1; | |
36 | for(po = options; po->name != NULL; po++) { | |
37 | char buf[64]; | |
38 | expert = (po->flags & OPT_EXPERT) != 0; | |
39 | if (expert == i) { | |
40 | if (expert && first) { | |
41 | printf("\nAdvanced options are:\n"); | |
42 | first = 0; | |
43 | } | |
44 | strcpy(buf, po->name); | |
45 | if (po->flags & HAS_ARG) { | |
46 | strcat(buf, " "); | |
47 | strcat(buf, po->argname); | |
48 | } | |
49 | printf("-%-17s %s\n", buf, po->help); | |
50 | } | |
51 | } | |
52 | } | |
53 | } | |
54 | ||
55 | void parse_options(int argc, char **argv, const OptionDef *options) | |
56 | { | |
57 | const char *opt, *arg; | |
58 | int optindex; | |
59 | const OptionDef *po; | |
60 | ||
61 | /* parse options */ | |
62 | optindex = 1; | |
63 | while (optindex < argc) { | |
64 | opt = argv[optindex++]; | |
65 | ||
66 | if (opt[0] == '-' && opt[1] != '\0') { | |
67 | po = options; | |
68 | while (po->name != NULL) { | |
69 | if (!strcmp(opt + 1, po->name)) | |
70 | break; | |
71 | po++; | |
72 | } | |
73 | if (!po->name) { | |
74 | fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt); | |
75 | exit(1); | |
76 | } | |
77 | arg = NULL; | |
78 | if (po->flags & HAS_ARG) { | |
79 | arg = argv[optindex++]; | |
80 | if (!arg) { | |
81 | fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt); | |
82 | exit(1); | |
83 | } | |
84 | } | |
85 | if (po->flags & OPT_STRING) { | |
86 | char *str; | |
87 | str = strdup(arg); | |
88 | *po->u.str_arg = str; | |
89 | } else if (po->flags & OPT_BOOL) { | |
90 | *po->u.int_arg = 1; | |
91 | } else { | |
92 | po->u.func_arg(arg); | |
93 | } | |
94 | } else { | |
95 | parse_arg_file(opt); | |
96 | } | |
97 | } | |
98 | } | |
99 | ||
100 | void print_error(const char *filename, int err) | |
101 | { | |
102 | switch(err) { | |
103 | case AVERROR_NUMEXPECTED: | |
104 | fprintf(stderr, "%s: Incorrect image filename syntax.\n" | |
105 | "Use '%%d' to specify the image number:\n" | |
106 | " for img1.jpg, img2.jpg, ..., use 'img%%d.jpg';\n" | |
107 | " for img001.jpg, img002.jpg, ..., use 'img%%03d.jpg'.\n", | |
108 | filename); | |
109 | break; | |
110 | case AVERROR_INVALIDDATA: | |
111 | fprintf(stderr, "%s: Error while parsing header\n", filename); | |
112 | break; | |
113 | case AVERROR_NOFMT: | |
114 | fprintf(stderr, "%s: Unknown format\n", filename); | |
115 | break; | |
116 | default: | |
117 | fprintf(stderr, "%s: Error while opening file\n", filename); | |
118 | break; | |
119 | } | |
120 | } |