LCOV - code coverage report
Current view: top level - media/libav/libavutil - dict.c (source / functions) Hit Total Coverage
Test: output.info Lines: 0 94 0.0 %
Date: 2017-07-14 16:53:18 Functions: 0 7 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /*
       2             :  * copyright (c) 2009 Michael Niedermayer
       3             :  *
       4             :  * This file is part of Libav.
       5             :  *
       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.
      10             :  *
      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.
      15             :  *
      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
      19             :  */
      20             : 
      21             : #include <string.h>
      22             : 
      23             : #include "avstring.h"
      24             : #include "dict.h"
      25             : #include "internal.h"
      26             : #include "mem.h"
      27             : 
      28             : struct AVDictionary {
      29             :     int count;
      30             :     AVDictionaryEntry *elems;
      31             : };
      32             : 
      33           0 : int av_dict_count(const AVDictionary *m)
      34             : {
      35           0 :     return m ? m->count : 0;
      36             : }
      37             : 
      38           0 : AVDictionaryEntry *av_dict_get(const AVDictionary *m, const char *key,
      39             :                                const AVDictionaryEntry *prev, int flags)
      40             : {
      41             :     unsigned int i, j;
      42             : 
      43           0 :     if (!m)
      44           0 :         return NULL;
      45             : 
      46           0 :     if (prev)
      47           0 :         i = prev - m->elems + 1;
      48             :     else
      49           0 :         i = 0;
      50             : 
      51           0 :     for (; i < m->count; i++) {
      52           0 :         const char *s = m->elems[i].key;
      53           0 :         if (flags & AV_DICT_MATCH_CASE)
      54           0 :             for (j = 0; s[j] == key[j] && key[j]; j++)
      55             :                 ;
      56             :         else
      57           0 :             for (j = 0; av_toupper(s[j]) == av_toupper(key[j]) && key[j]; j++)
      58             :                 ;
      59           0 :         if (key[j])
      60           0 :             continue;
      61           0 :         if (s[j] && !(flags & AV_DICT_IGNORE_SUFFIX))
      62           0 :             continue;
      63           0 :         return &m->elems[i];
      64             :     }
      65           0 :     return NULL;
      66             : }
      67             : 
      68           0 : int av_dict_set(AVDictionary **pm, const char *key, const char *value,
      69             :                 int flags)
      70             : {
      71           0 :     AVDictionary *m = *pm;
      72           0 :     AVDictionaryEntry *tag = av_dict_get(m, key, NULL, flags);
      73           0 :     char *oldval = NULL;
      74             : 
      75           0 :     if (!m)
      76           0 :         m = *pm = av_mallocz(sizeof(*m));
      77             : 
      78           0 :     if (tag) {
      79           0 :         if (flags & AV_DICT_DONT_OVERWRITE) {
      80           0 :             if (flags & AV_DICT_DONT_STRDUP_KEY) av_free(key);
      81           0 :             if (flags & AV_DICT_DONT_STRDUP_VAL) av_free(value);
      82           0 :             return 0;
      83             :         }
      84           0 :         if (flags & AV_DICT_APPEND)
      85           0 :             oldval = tag->value;
      86             :         else
      87           0 :             av_free(tag->value);
      88           0 :         av_free(tag->key);
      89           0 :         *tag = m->elems[--m->count];
      90             :     } else {
      91           0 :         AVDictionaryEntry *tmp = av_realloc(m->elems,
      92           0 :                                             (m->count + 1) * sizeof(*m->elems));
      93           0 :         if (tmp)
      94           0 :             m->elems = tmp;
      95             :         else
      96           0 :             return AVERROR(ENOMEM);
      97             :     }
      98           0 :     if (value) {
      99           0 :         if (flags & AV_DICT_DONT_STRDUP_KEY)
     100           0 :             m->elems[m->count].key = key;
     101             :         else
     102           0 :             m->elems[m->count].key = av_strdup(key);
     103           0 :         if (flags & AV_DICT_DONT_STRDUP_VAL) {
     104           0 :             m->elems[m->count].value = value;
     105           0 :         } else if (oldval && flags & AV_DICT_APPEND) {
     106           0 :             int len = strlen(oldval) + strlen(value) + 1;
     107           0 :             if (!(oldval = av_realloc(oldval, len)))
     108           0 :                 return AVERROR(ENOMEM);
     109           0 :             av_strlcat(oldval, value, len);
     110           0 :             m->elems[m->count].value = oldval;
     111             :         } else
     112           0 :             m->elems[m->count].value = av_strdup(value);
     113           0 :         m->count++;
     114             :     }
     115           0 :     if (!m->count) {
     116           0 :         av_free(m->elems);
     117           0 :         av_freep(pm);
     118             :     }
     119             : 
     120           0 :     return 0;
     121             : }
     122             : 
     123           0 : static int parse_key_value_pair(AVDictionary **pm, const char **buf,
     124             :                                 const char *key_val_sep, const char *pairs_sep,
     125             :                                 int flags)
     126             : {
     127           0 :     char *key = av_get_token(buf, key_val_sep);
     128           0 :     char *val = NULL;
     129             :     int ret;
     130             : 
     131           0 :     if (key && *key && strspn(*buf, key_val_sep)) {
     132           0 :         (*buf)++;
     133           0 :         val = av_get_token(buf, pairs_sep);
     134             :     }
     135             : 
     136           0 :     if (key && *key && val && *val)
     137           0 :         ret = av_dict_set(pm, key, val, flags);
     138             :     else
     139           0 :         ret = AVERROR(EINVAL);
     140             : 
     141           0 :     av_freep(&key);
     142           0 :     av_freep(&val);
     143             : 
     144           0 :     return ret;
     145             : }
     146             : 
     147           0 : int av_dict_parse_string(AVDictionary **pm, const char *str,
     148             :                          const char *key_val_sep, const char *pairs_sep,
     149             :                          int flags)
     150             : {
     151             :     int ret;
     152             : 
     153           0 :     if (!str)
     154           0 :         return 0;
     155             : 
     156             :     /* ignore STRDUP flags */
     157           0 :     flags &= ~(AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
     158             : 
     159           0 :     while (*str) {
     160           0 :         if ((ret = parse_key_value_pair(pm, &str, key_val_sep, pairs_sep, flags)) < 0)
     161           0 :             return ret;
     162             : 
     163           0 :         if (*str)
     164           0 :             str++;
     165             :     }
     166             : 
     167           0 :     return 0;
     168             : }
     169             : 
     170           0 : void av_dict_free(AVDictionary **pm)
     171             : {
     172           0 :     AVDictionary *m = *pm;
     173             : 
     174           0 :     if (m) {
     175           0 :         while (m->count--) {
     176           0 :             av_free(m->elems[m->count].key);
     177           0 :             av_free(m->elems[m->count].value);
     178             :         }
     179           0 :         av_free(m->elems);
     180             :     }
     181           0 :     av_freep(pm);
     182           0 : }
     183             : 
     184           0 : void av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
     185             : {
     186           0 :     AVDictionaryEntry *t = NULL;
     187             : 
     188           0 :     while ((t = av_dict_get(src, "", t, AV_DICT_IGNORE_SUFFIX)))
     189           0 :         av_dict_set(dst, t->key, t->value, flags);
     190           0 : }

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