FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavutil/dict.c
Date: 2026-09-15 15:24:09
Exec Total Coverage
Lines: 146 156 93.6%
Functions: 10 10 100.0%
Branches: 106 132 80.3%
Line Branch Exec Source
1 /*
2 * copyright (c) 2009 Michael Niedermayer
3 *
4 * This file is part of FFmpeg.
5 *
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.
10 *
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.
15 *
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
19 */
20
21 #include <inttypes.h>
22 #include <stdio.h>
23 #include <string.h>
24
25 #include "avassert.h"
26 #include "avstring.h"
27 #include "dict.h"
28 #include "error.h"
29 #include "mem.h"
30 #include "bprint.h"
31
32 struct AVDictionary {
33 int count;
34 AVDictionaryEntry *elems;
35 };
36
37 32910 int av_dict_count(const AVDictionary *m)
38 {
39
2/2
✓ Branch 0 taken 23125 times.
✓ Branch 1 taken 9785 times.
 32910 return m ? m->count : 0;
40 }
41
42 6251812 const AVDictionaryEntry *av_dict_iterate(const AVDictionary *m,
43 const AVDictionaryEntry *prev)
44 {
45 6251812 int i = 0;
46
47
2/2
✓ Branch 0 taken 2808427 times.
✓ Branch 1 taken 3443385 times.
 6251812 if (!m)
48 2808427 return NULL;
49
50
2/2
✓ Branch 0 taken 2233704 times.
✓ Branch 1 taken 1209681 times.
 3443385 if (prev)
51 2233704 i = prev - m->elems + 1;
52
53 av_assert2(i >= 0);
54
2/2
✓ Branch 0 taken 946508 times.
✓ Branch 1 taken 2496877 times.
 3443385 if (i >= m->count)
55 946508 return NULL;
56
57 2496877 return &m->elems[i];
58 }
59
60 2014936 AVDictionaryEntry *av_dict_get(const AVDictionary *m, const char *key,
61 const AVDictionaryEntry *prev, int flags)
62 {
63 2014936 const AVDictionaryEntry *entry = prev;
64 unsigned int j;
65
66
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 2014935 times.
 2014936 if (!key)
67 1 return NULL;
68
69
2/2
✓ Branch 1 taken 1942370 times.
✓ Branch 2 taken 1751532 times.
 3693902 while ((entry = av_dict_iterate(m, entry))) {
70 1942370 const char *s = entry->key;
71
2/2
✓ Branch 0 taken 225396 times.
✓ Branch 1 taken 1716974 times.
 1942370 if (flags & AV_DICT_MATCH_CASE)
72
4/4
✓ Branch 0 taken 270687 times.
✓ Branch 1 taken 214747 times.
✓ Branch 2 taken 260038 times.
✓ Branch 3 taken 10649 times.
 485434 for (j = 0; s[j] == key[j] && key[j]; j++)
73 ;
74 else
75
4/4
✓ Branch 0 taken 6688635 times.
✓ Branch 1 taken 1464464 times.
✓ Branch 2 taken 6436125 times.
✓ Branch 3 taken 252510 times.
 8153099 for (j = 0; av_toupper(s[j]) == av_toupper(key[j]) && key[j]; j++)
76 ;
77
2/2
✓ Branch 0 taken 1672426 times.
✓ Branch 1 taken 269944 times.
 1942370 if (key[j])
78 1672426 continue;
79
4/4
✓ Branch 0 taken 6785 times.
✓ Branch 1 taken 263159 times.
✓ Branch 2 taken 6541 times.
✓ Branch 3 taken 244 times.
 269944 if (s[j] && !(flags & AV_DICT_IGNORE_SUFFIX))
80 6541 continue;
81 263403 return (AVDictionaryEntry *)entry;
82 }
83 1751532 return NULL;
84 }
85
86 1335434 int av_dict_set(AVDictionary **pm, const char *key, const char *value,
87 int flags)
88 {
89 1335434 AVDictionary *m = *pm;
90 1335434 AVDictionaryEntry *tag = NULL;
91 1335434 char *copy_key = NULL, *copy_value = NULL;
92 int err;
93
94
2/2
✓ Branch 0 taken 65197 times.
✓ Branch 1 taken 1270237 times.
 1335434 if (flags & AV_DICT_DONT_STRDUP_VAL)
95 65197 copy_value = (void *)value;
96
2/2
✓ Branch 0 taken 579075 times.
✓ Branch 1 taken 691162 times.
 1270237 else if (value)
97 579075 copy_value = av_strdup(value);
98
2/2
✓ Branch 0 taken 4 times.
✓ Branch 1 taken 1335430 times.
 1335434 if (!key) {
99 4 err = AVERROR(EINVAL);
100 4 goto err_out;
101 }
102
2/2
✓ Branch 0 taken 34108 times.
✓ Branch 1 taken 1301322 times.
 1335430 if (flags & AV_DICT_DONT_STRDUP_KEY)
103 34108 copy_key = (void *)key;
104 else
105 1301322 copy_key = av_strdup(key);
106
4/6
✓ Branch 0 taken 1335430 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 644267 times.
✓ Branch 3 taken 691163 times.
✗ Branch 4 not taken.
✓ Branch 5 taken 644267 times.
 1335430 if (!copy_key || (value && !copy_value))
107 ✗ goto enomem;
108
109
2/2
✓ Branch 0 taken 1222216 times.
✓ Branch 1 taken 113214 times.
 1335430 if (!(flags & AV_DICT_MULTIKEY)) {
110 1222216 tag = av_dict_get(m, key, NULL, flags);
111
2/2
✓ Branch 0 taken 7580 times.
✓ Branch 1 taken 105634 times.
 113214 } else if (flags & AV_DICT_DEDUP) {
112
2/2
✓ Branch 1 taken 20 times.
✓ Branch 2 taken 7563 times.
 7583 while ((tag = av_dict_get(m, key, tag, flags))) {
113
2/6
✗ Branch 0 not taken.
✓ Branch 1 taken 20 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
✓ Branch 4 taken 20 times.
✗ Branch 5 not taken.
 20 if ((!value && !tag->value) ||
114
3/4
✓ Branch 0 taken 20 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 17 times.
✓ Branch 3 taken 3 times.
 20 (value && tag->value && !strcmp(value, tag->value))) {
115 17 av_free(copy_key);
116 17 av_free(copy_value);
117 17 return 0;
118 }
119 }
120 }
121
2/2
✓ Branch 0 taken 735447 times.
✓ Branch 1 taken 599966 times.
 1335413 if (!m)
122 735447 m = *pm = av_mallocz(sizeof(*m));
123
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1335413 times.
 1335413 if (!m)
124 ✗ goto enomem;
125
126
2/2
✓ Branch 0 taken 164824 times.
✓ Branch 1 taken 1170589 times.
 1335413 if (tag) {
127
2/2
✓ Branch 0 taken 829 times.
✓ Branch 1 taken 163995 times.
 164824 if (flags & AV_DICT_DONT_OVERWRITE) {
128 829 av_free(copy_key);
129 829 av_free(copy_value);
130 829 return 0;
131 }
132
4/4
✓ Branch 0 taken 38323 times.
✓ Branch 1 taken 125672 times.
✓ Branch 2 taken 16449 times.
✓ Branch 3 taken 21874 times.
 163995 if (copy_value && flags & AV_DICT_APPEND) {
133 16449 size_t oldlen = strlen(tag->value);
134 16449 size_t new_part_len = strlen(copy_value);
135 16449 size_t len = oldlen + new_part_len + 1;
136 16449 char *newval = av_realloc(tag->value, len);
137
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 16449 times.
 16449 if (!newval)
138 ✗ goto enomem;
139 16449 memcpy(newval + oldlen, copy_value, new_part_len + 1);
140 16449 av_freep(&copy_value);
141 16449 copy_value = newval;
142 } else
143 147546 av_free(tag->value);
144 163995 av_free(tag->key);
145 163995 *tag = m->elems[--m->count];
146
2/2
✓ Branch 0 taken 605098 times.
✓ Branch 1 taken 565491 times.
 1170589 } else if (copy_value) {
147 605098 AVDictionaryEntry *tmp = av_realloc_array(m->elems,
148 605098 m->count + 1, sizeof(*m->elems));
149
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 605098 times.
 605098 if (!tmp)
150 ✗ goto enomem;
151 605098 m->elems = tmp;
152 }
153
2/2
✓ Branch 0 taken 643421 times.
✓ Branch 1 taken 691163 times.
 1334584 if (copy_value) {
154 643421 m->elems[m->count].key = copy_key;
155 643421 m->elems[m->count].value = copy_value;
156 643421 m->count++;
157 } else {
158 691163 err = 0;
159 691163 goto end;
160 }
161
162 643421 return 0;
163
164 ✗ enomem:
165 ✗ err = AVERROR(ENOMEM);
166 4 err_out:
167 4 av_free(copy_value);
168 691167 end:
169
4/4
✓ Branch 0 taken 691163 times.
✓ Branch 1 taken 4 times.
✓ Branch 2 taken 519622 times.
✓ Branch 3 taken 171541 times.
 691167 if (m && !m->count) {
170 519622 av_freep(&m->elems);
171 519622 av_freep(pm);
172 }
173 691167 av_free(copy_key);
174 691167 return err;
175 }
176
177 9595 int av_dict_set_int(AVDictionary **pm, const char *key, int64_t value,
178 int flags)
179 {
180 char valuestr[22];
181 9595 snprintf(valuestr, sizeof(valuestr), "%"PRId64, value);
182 9595 flags &= ~AV_DICT_DONT_STRDUP_VAL;
183 9595 return av_dict_set(pm, key, valuestr, flags);
184 }
185
186 563 static int parse_key_value_pair(AVDictionary **pm, const char **buf,
187 const char *key_val_sep, const char *pairs_sep,
188 int flags)
189 {
190 563 char *key = av_get_token(buf, key_val_sep);
191 563 char *val = NULL;
192 int ret;
193
194
3/6
✓ Branch 0 taken 563 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 563 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 563 times.
✗ Branch 5 not taken.
 563 if (key && *key && strspn(*buf, key_val_sep)) {
195 563 (*buf)++;
196 563 val = av_get_token(buf, pairs_sep);
197 }
198
199
4/8
✓ Branch 0 taken 563 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 563 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 563 times.
✗ Branch 5 not taken.
✓ Branch 6 taken 563 times.
✗ Branch 7 not taken.
 563 if (key && *key && val && *val)
200 563 ret = av_dict_set(pm, key, val, flags);
201 else
202 ✗ ret = AVERROR(EINVAL);
203
204 563 av_freep(&key);
205 563 av_freep(&val);
206
207 563 return ret;
208 }
209
210 280 int av_dict_parse_string(AVDictionary **pm, const char *str,
211 const char *key_val_sep, const char *pairs_sep,
212 int flags)
213 {
214 int ret;
215
216
2/2
✓ Branch 0 taken 7 times.
✓ Branch 1 taken 273 times.
 280 if (!str)
217 7 return 0;
218
219 /* ignore STRDUP flags */
220 273 flags &= ~(AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
221
222
2/2
✓ Branch 0 taken 563 times.
✓ Branch 1 taken 273 times.
 1109 while (*str) {
223
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 563 times.
 563 if ((ret = parse_key_value_pair(pm, &str, key_val_sep, pairs_sep, flags)) < 0)
224 ✗ return ret;
225
226
2/2
✓ Branch 0 taken 271 times.
✓ Branch 1 taken 292 times.
 563 if (*str)
227 292 str++;
228 }
229
230 273 return 0;
231 }
232
233 11061913 void av_dict_free(AVDictionary **pm)
234 {
235 11061913 AVDictionary *m = *pm;
236
237
2/2
✓ Branch 0 taken 215825 times.
✓ Branch 1 taken 10846088 times.
 11061913 if (m) {
238
2/2
✓ Branch 0 taken 479426 times.
✓ Branch 1 taken 215825 times.
 695251 while (m->count--) {
239 479426 av_freep(&m->elems[m->count].key);
240 479426 av_freep(&m->elems[m->count].value);
241 }
242 215825 av_freep(&m->elems);
243 }
244 11061913 av_freep(pm);
245 11061913 }
246
247 1589656 int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
248 {
249 1589656 const AVDictionaryEntry *t = NULL;
250
251
2/2
✓ Branch 1 taken 109746 times.
✓ Branch 2 taken 1589656 times.
 1699402 while ((t = av_dict_iterate(src, t))) {
252 109746 int ret = av_dict_set(dst, t->key, t->value, flags);
253
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 109746 times.
 109746 if (ret < 0)
254 ✗ return ret;
255 }
256
257 1589656 return 0;
258 }
259
260 4626 int av_dict_get_string(const AVDictionary *m, char **buffer,
261 const char key_val_sep, const char pairs_sep)
262 {
263 4626 const AVDictionaryEntry *t = NULL;
264 AVBPrint bprint;
265 4626 int cnt = 0;
266 4626 char special_chars[] = {pairs_sep, key_val_sep, '\0'};
267
268
4/8
✓ Branch 0 taken 4626 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 4626 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 4626 times.
✗ Branch 5 not taken.
✓ Branch 6 taken 4626 times.
✗ Branch 7 not taken.
 4626 if (!buffer || pairs_sep == '\0' || key_val_sep == '\0' || pairs_sep == key_val_sep ||
269
2/4
✓ Branch 0 taken 4626 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 4626 times.
 4626 pairs_sep == '\\' || key_val_sep == '\\')
270 ✗ return AVERROR(EINVAL);
271
272
2/2
✓ Branch 1 taken 41 times.
✓ Branch 2 taken 4585 times.
 4626 if (!av_dict_count(m)) {
273 41 *buffer = av_strdup("");
274
1/2
✓ Branch 0 taken 41 times.
✗ Branch 1 not taken.
 41 return *buffer ? 0 : AVERROR(ENOMEM);
275 }
276
277 4585 av_bprint_init(&bprint, 64, AV_BPRINT_SIZE_UNLIMITED);
278
2/2
✓ Branch 1 taken 4639 times.
✓ Branch 2 taken 4585 times.
 9224 while ((t = av_dict_iterate(m, t))) {
279
2/2
✓ Branch 0 taken 54 times.
✓ Branch 1 taken 4585 times.
 4639 if (cnt++)
280 54 av_bprint_append_data(&bprint, &pairs_sep, 1);
281 4639 av_bprint_escape(&bprint, t->key, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
282 4639 av_bprint_append_data(&bprint, &key_val_sep, 1);
283 4639 av_bprint_escape(&bprint, t->value, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
284 }
285 4585 return av_bprint_finalize(&bprint, buffer);
286 }
287