2 * copyright (c) 2009 Michael Niedermayer
4 * This file is part of Libav.
6 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
31 AVDictionaryEntry *elems;
34 int av_dict_count(const AVDictionary *m)
36 return m ? m->count : 0;
40 av_dict_get(AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
47 if(prev) i= prev - m->elems + 1;
50 for(; i<m->count; i++){
51 const char *s= m->elems[i].key;
52 if(flags & AV_DICT_MATCH_CASE) for(j=0; s[j] == key[j] && key[j]; j++);
53 else for(j=0; toupper(s[j]) == toupper(key[j]) && key[j]; j++);
56 if(s[j] && !(flags & AV_DICT_IGNORE_SUFFIX))
63 int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
65 AVDictionary *m = *pm;
66 AVDictionaryEntry *tag = av_dict_get(m, key, NULL, flags);
70 m = *pm = av_mallocz(sizeof(*m));
73 if (flags & AV_DICT_DONT_OVERWRITE)
75 if (flags & AV_DICT_APPEND)
80 *tag = m->elems[--m->count];
82 AVDictionaryEntry *tmp = av_realloc(m->elems, (m->count+1) * sizeof(*m->elems));
86 return AVERROR(ENOMEM);
89 if (flags & AV_DICT_DONT_STRDUP_KEY) {
90 m->elems[m->count].key = key;
92 m->elems[m->count].key = av_strdup(key );
93 if (flags & AV_DICT_DONT_STRDUP_VAL) {
94 m->elems[m->count].value = value;
95 } else if (oldval && flags & AV_DICT_APPEND) {
96 int len = strlen(oldval) + strlen(value) + 1;
97 if (!(oldval = av_realloc(oldval, len)))
98 return AVERROR(ENOMEM);
99 av_strlcat(oldval, value, len);
100 m->elems[m->count].value = oldval;
102 m->elems[m->count].value = av_strdup(value);
113 static int parse_key_value_pair(AVDictionary **pm, const char **buf,
114 const char *key_val_sep, const char *pairs_sep,
117 char *key = av_get_token(buf, key_val_sep);
121 if (key && *key && strspn(*buf, key_val_sep)) {
123 val = av_get_token(buf, pairs_sep);
126 if (key && *key && val && *val)
127 ret = av_dict_set(pm, key, val, flags);
129 ret = AVERROR(EINVAL);
137 int av_dict_parse_string(AVDictionary **pm, const char *str,
138 const char *key_val_sep, const char *pairs_sep,
146 /* ignore STRDUP flags */
147 flags &= ~(AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
150 if ((ret = parse_key_value_pair(pm, &str, key_val_sep, pairs_sep, flags)) < 0)
160 void av_dict_free(AVDictionary **pm)
162 AVDictionary *m = *pm;
166 av_free(m->elems[m->count].key);
167 av_free(m->elems[m->count].value);
174 void av_dict_copy(AVDictionary **dst, AVDictionary *src, int flags)
176 AVDictionaryEntry *t = NULL;
178 while ((t = av_dict_get(src, "", t, AV_DICT_IGNORE_SUFFIX)))
179 av_dict_set(dst, t->key, t->value, flags);