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
30 AVDictionaryEntry *elems;
33 int av_dict_count(const AVDictionary *m)
35 return m ? m->count : 0;
39 av_dict_get(AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
46 if(prev) i= prev - m->elems + 1;
49 for(; i<m->count; i++){
50 const char *s= m->elems[i].key;
51 if(flags & AV_DICT_MATCH_CASE) for(j=0; s[j] == key[j] && key[j]; j++);
52 else for(j=0; av_toupper(s[j]) == av_toupper(key[j]) && key[j]; j++);
55 if(s[j] && !(flags & AV_DICT_IGNORE_SUFFIX))
62 int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
64 AVDictionary *m = *pm;
65 AVDictionaryEntry *tag = av_dict_get(m, key, NULL, flags);
69 m = *pm = av_mallocz(sizeof(*m));
72 if (flags & AV_DICT_DONT_OVERWRITE)
74 if (flags & AV_DICT_APPEND)
79 *tag = m->elems[--m->count];
81 AVDictionaryEntry *tmp = av_realloc(m->elems, (m->count+1) * sizeof(*m->elems));
85 return AVERROR(ENOMEM);
88 if (flags & AV_DICT_DONT_STRDUP_KEY) {
89 m->elems[m->count].key = (char*)(intptr_t)key;
91 m->elems[m->count].key = av_strdup(key);
92 if (flags & AV_DICT_DONT_STRDUP_VAL) {
93 m->elems[m->count].value = (char*)(intptr_t)value;
94 } else if (oldval && flags & AV_DICT_APPEND) {
95 int len = strlen(oldval) + strlen(value) + 1;
96 char *newval = av_mallocz(len);
98 return AVERROR(ENOMEM);
99 av_strlcat(newval, oldval, len);
101 av_strlcat(newval, value, len);
102 m->elems[m->count].value = newval;
104 m->elems[m->count].value = av_strdup(value);
115 static int parse_key_value_pair(AVDictionary **pm, const char **buf,
116 const char *key_val_sep, const char *pairs_sep,
119 char *key = av_get_token(buf, key_val_sep);
123 if (key && *key && strspn(*buf, key_val_sep)) {
125 val = av_get_token(buf, pairs_sep);
128 if (key && *key && val && *val)
129 ret = av_dict_set(pm, key, val, flags);
131 ret = AVERROR(EINVAL);
139 int av_dict_parse_string(AVDictionary **pm, const char *str,
140 const char *key_val_sep, const char *pairs_sep,
148 /* ignore STRDUP flags */
149 flags &= ~(AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
152 if ((ret = parse_key_value_pair(pm, &str, key_val_sep, pairs_sep, flags)) < 0)
162 void av_dict_free(AVDictionary **pm)
164 AVDictionary *m = *pm;
168 av_free(m->elems[m->count].key);
169 av_free(m->elems[m->count].value);
176 void av_dict_copy(AVDictionary **dst, AVDictionary *src, int flags)
178 AVDictionaryEntry *t = NULL;
180 while ((t = av_dict_get(src, "", t, AV_DICT_IGNORE_SUFFIX)))
181 av_dict_set(dst, t->key, t->value, flags);