FFmpeg
dict.c
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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 "libavutil/dict.c"
22 
23 static void print_dict(const AVDictionary *m)
24 {
25  AVDictionaryEntry *t = NULL;
26  while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX)))
27  printf("%s %s ", t->key, t->value);
28  printf("\n");
29 }
30 
31 static void test_separators(const AVDictionary *m, const char pair, const char val)
32 {
33  AVDictionary *dict = NULL;
34  char pairs[] = {pair , '\0'};
35  char vals[] = {val, '\0'};
36 
37  char *buffer = NULL;
38  int ret;
39 
40  av_dict_copy(&dict, m, 0);
41  print_dict(dict);
42  av_dict_get_string(dict, &buffer, val, pair);
43  printf("%s\n", buffer);
44  av_dict_free(&dict);
45  ret = av_dict_parse_string(&dict, buffer, vals, pairs, 0);
46  printf("ret %d\n", ret);
47  av_freep(&buffer);
48  print_dict(dict);
49  av_dict_free(&dict);
50 }
51 
52 int main(void)
53 {
54  AVDictionary *dict = NULL;
55  AVDictionaryEntry *e;
56  char *buffer = NULL;
57 
58  printf("Testing av_dict_get_string() and av_dict_parse_string()\n");
59  av_dict_get_string(dict, &buffer, '=', ',');
60  printf("%s\n", buffer);
61  av_freep(&buffer);
62  av_dict_set(&dict, "aaa", "aaa", 0);
63  av_dict_set(&dict, "b,b", "bbb", 0);
64  av_dict_set(&dict, "c=c", "ccc", 0);
65  av_dict_set(&dict, "ddd", "d,d", 0);
66  av_dict_set(&dict, "eee", "e=e", 0);
67  av_dict_set(&dict, "f,f", "f=f", 0);
68  av_dict_set(&dict, "g=g", "g,g", 0);
69  test_separators(dict, ',', '=');
70  av_dict_free(&dict);
71  av_dict_set(&dict, "aaa", "aaa", 0);
72  av_dict_set(&dict, "bbb", "bbb", 0);
73  av_dict_set(&dict, "ccc", "ccc", 0);
74  av_dict_set(&dict, "\\,=\'\"", "\\,=\'\"", 0);
75  test_separators(dict, '"', '=');
76  test_separators(dict, '\'', '=');
77  test_separators(dict, ',', '"');
78  test_separators(dict, ',', '\'');
79  test_separators(dict, '\'', '"');
80  test_separators(dict, '"', '\'');
81  av_dict_free(&dict);
82 
83  printf("\nTesting av_dict_set()\n");
84  av_dict_set(&dict, "a", "a", 0);
85  av_dict_set(&dict, "b", av_strdup("b"), AV_DICT_DONT_STRDUP_VAL);
86  av_dict_set(&dict, av_strdup("c"), "c", AV_DICT_DONT_STRDUP_KEY);
87  av_dict_set(&dict, av_strdup("d"), av_strdup("d"), AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
88  av_dict_set(&dict, "e", "e", AV_DICT_DONT_OVERWRITE);
89  av_dict_set(&dict, "e", "f", AV_DICT_DONT_OVERWRITE);
90  av_dict_set(&dict, "f", "f", 0);
91  av_dict_set(&dict, "f", NULL, 0);
92  av_dict_set(&dict, "ff", "f", 0);
93  av_dict_set(&dict, "ff", "f", AV_DICT_APPEND);
94  if (av_dict_get(dict, NULL, NULL, 0))
95  printf("av_dict_get() does not correctly handle NULL key.\n");
96  e = NULL;
97  while ((e = av_dict_get(dict, "", e, AV_DICT_IGNORE_SUFFIX)))
98  printf("%s %s\n", e->key, e->value);
99  av_dict_free(&dict);
100 
101  if (av_dict_set(&dict, NULL, "a", 0) >= 0 ||
102  av_dict_set(&dict, NULL, "b", 0) >= 0 ||
103  av_dict_set(&dict, NULL, NULL, AV_DICT_DONT_STRDUP_KEY) >= 0 ||
104  av_dict_set(&dict, NULL, av_strdup("b"), AV_DICT_DONT_STRDUP_VAL) >= 0 ||
105  av_dict_count(dict))
106  printf("av_dict_set does not correctly handle NULL key\n");
107 
108  e = NULL;
109  while ((e = av_dict_get(dict, "", e, AV_DICT_IGNORE_SUFFIX)))
110  printf("'%s' '%s'\n", e->key, e->value);
111  av_dict_free(&dict);
112 
113 
114  //valgrind sensible test
115  printf("\nTesting av_dict_set_int()\n");
116  av_dict_set_int(&dict, "1", 1, AV_DICT_DONT_STRDUP_VAL);
117  av_dict_set_int(&dict, av_strdup("2"), 2, AV_DICT_DONT_STRDUP_KEY);
118  av_dict_set_int(&dict, av_strdup("3"), 3, AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
119  av_dict_set_int(&dict, "4", 4, 0);
120  av_dict_set_int(&dict, "5", 5, AV_DICT_DONT_OVERWRITE);
121  av_dict_set_int(&dict, "5", 6, AV_DICT_DONT_OVERWRITE);
122  av_dict_set_int(&dict, "12", 1, 0);
123  av_dict_set_int(&dict, "12", 2, AV_DICT_APPEND);
124  e = NULL;
125  while ((e = av_dict_get(dict, "", e, AV_DICT_IGNORE_SUFFIX)))
126  printf("%s %s\n", e->key, e->value);
127  av_dict_free(&dict);
128 
129  //valgrind sensible test
130  printf("\nTesting av_dict_set() with existing AVDictionaryEntry.key as key\n");
131  av_dict_set(&dict, "key", "old", 0);
132  e = av_dict_get(dict, "key", NULL, 0);
133  av_dict_set(&dict, e->key, "new val OK", 0);
134  e = av_dict_get(dict, "key", NULL, 0);
135  printf("%s\n", e->value);
136  av_dict_set(&dict, e->key, e->value, 0);
137  e = av_dict_get(dict, "key", NULL, 0);
138  printf("%s\n", e->value);
139  av_dict_free(&dict);
140 
141  return 0;
142 }
main
int main(void)
Definition: dict.c:52
av_dict_count
int av_dict_count(const AVDictionary *m)
Get number of entries in dictionary.
Definition: dict.c:36
AV_DICT_APPEND
#define AV_DICT_APPEND
If the entry already exists, append to it.
Definition: dict.h:75
AV_DICT_IGNORE_SUFFIX
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key,...
Definition: dict.h:68
AVDictionary
Definition: dict.c:31
print_dict
static void print_dict(const AVDictionary *m)
Definition: dict.c:23
val
static double val(void *priv, double ch)
Definition: aeval.c:77
AV_DICT_DONT_STRDUP_VAL
#define AV_DICT_DONT_STRDUP_VAL
Take ownership of a value that's been allocated with av_malloc() or another memory allocation functio...
Definition: dict.h:72
av_dict_get
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:41
AVDictionaryEntry::key
char * key
Definition: dict.h:80
NULL
#define NULL
Definition: coverity.c:32
AV_DICT_DONT_OVERWRITE
#define AV_DICT_DONT_OVERWRITE
Don't overwrite existing entries.
Definition: dict.h:74
printf
printf("static const uint8_t my_array[100] = {\n")
av_dict_free
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values.
Definition: dict.c:208
test_separators
static void test_separators(const AVDictionary *m, const char pair, const char val)
Definition: dict.c:31
ret
ret
Definition: filter_design.txt:187
buffer
the frame and frame reference mechanism is intended to as much as expensive copies of that data while still allowing the filters to produce correct results The data is stored in buffers represented by AVFrame structures Several references can point to the same frame buffer
Definition: filter_design.txt:49
av_dict_parse_string
int av_dict_parse_string(AVDictionary **pm, const char *str, const char *key_val_sep, const char *pairs_sep, int flags)
Parse the key/value pairs list and add the parsed entries to a dictionary.
Definition: dict.c:185
dict.c
av_dict_set_int
int av_dict_set_int(AVDictionary **pm, const char *key, int64_t value, int flags)
Convenience wrapper for av_dict_set that converts the value to a string and stores it.
Definition: dict.c:152
av_strdup
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:280
AVDictionaryEntry
Definition: dict.h:79
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
av_dict_set
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:71
av_dict_get_string
int av_dict_get_string(const AVDictionary *m, char **buffer, const char key_val_sep, const char pairs_sep)
Get dictionary entries as a string.
Definition: dict.c:235
av_dict_copy
int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
Definition: dict.c:222
AVDictionaryEntry::value
char * value
Definition: dict.h:81
AV_DICT_DONT_STRDUP_KEY
#define AV_DICT_DONT_STRDUP_KEY
Take ownership of a key that's been allocated with av_malloc() or another memory allocation function.
Definition: dict.h:70
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