2 * copyright (c) 2009 Michael Niedermayer
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 av_dict_get(AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
35 if(prev) i= prev - m->elems + 1;
38 for(; i<m->count; i++){
39 const char *s= m->elems[i].key;
40 if(flags & AV_DICT_MATCH_CASE) for(j=0; s[j] == key[j] && key[j]; j++);
41 else for(j=0; toupper(s[j]) == toupper(key[j]) && key[j]; j++);
44 if(s[j] && !(flags & AV_DICT_IGNORE_SUFFIX))
51 int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
53 AVDictionary *m = *pm;
54 AVDictionaryEntry *tag = av_dict_get(m, key, NULL, flags);
58 m = *pm = av_mallocz(sizeof(*m));
61 if (flags & AV_DICT_DONT_OVERWRITE)
63 if (flags & AV_DICT_APPEND)
68 *tag = m->elems[--m->count];
70 AVDictionaryEntry *tmp = av_realloc(m->elems, (m->count+1) * sizeof(*m->elems));
74 return AVERROR(ENOMEM);
77 if (flags & AV_DICT_DONT_STRDUP_KEY) {
78 m->elems[m->count].key = key;
80 m->elems[m->count].key = av_strdup(key );
81 if (flags & AV_DICT_DONT_STRDUP_VAL) {
82 m->elems[m->count].value = value;
83 } else if (oldval && flags & AV_DICT_APPEND) {
84 int len = strlen(oldval) + strlen(value) + 1;
85 if (!(oldval = av_realloc(oldval, len)))
86 return AVERROR(ENOMEM);
87 av_strlcat(oldval, value, len);
88 m->elems[m->count].value = oldval;
90 m->elems[m->count].value = av_strdup(value);
101 void av_dict_free(AVDictionary **pm)
103 AVDictionary *m = *pm;
107 av_free(m->elems[m->count].key);
108 av_free(m->elems[m->count].value);
115 void av_dict_copy(AVDictionary **dst, AVDictionary *src, int flags)
117 AVDictionaryEntry *t = NULL;
119 while ((t = av_dict_get(src, "", t, AV_DICT_IGNORE_SUFFIX)))
120 av_dict_set(dst, t->key, t->value, flags);