ffmpeg/libavutil/dict.c
Michael Niedermayer 13b7781ec8 Merge remote-tracking branch 'qatar/master'
* qatar/master: (23 commits)
  x86inc: use sse versions of common macros instead of sse2 when applicable
  doc/APIchanges: add missing dates and hashes
  lavf: don't return from void av_update_cur_dts()
  Changelog: add more entries.
  Changelog: update ffmpeg/avconv incompatibility list.
  avconv: remove some redundant temporary variables.
  avconv: fix broken indentation
  avconv: move copy_initial_nonkeyframes to the options context.
  avconv: use file:stream instead of file.stream in log messages.
  doc/avconv: elaborate on basic functionality.
  doc/avconv: -sample_fmts, not -help sample_fmts prints the sample formats
  openssl: Only use CRYPTO_set_id_callback on OpenSSL < 1.0.0
  Call avformat_network_init/deinit in the programs
  Remove leftover includes of strings.h
  avutil: Don't allow using strcasecmp/strncasecmp
  Replace all usage of strcasecmp/strncasecmp
  avstring: Add locale independent implementations of strcasecmp/strncasecmp
  avstring: Add locale independent implementations of toupper/tolower
  cosmetics: insert some spaces in explicit enum value assignments
  move 8SVX audio codecs to the audio codec list part on the next bump
  ...

Conflicts:
	avprobe.c
	doc/APIchanges
	ffplay.c
	ffserver.c
	libavcodec/avcodec.h
	libavdevice/bktr.c
	libavdevice/v4l.c
	libavdevice/v4l2.c
	libavformat/matroskaenc.c
	libavformat/wtv.c
	libavutil/avstring.c
	libavutil/avstring.h
	libavutil/avutil.h
	libswscale/x86/swscale_template.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2011-11-07 03:01:43 +01:00

121 lines
3.5 KiB
C

/*
* copyright (c) 2009 Michael Niedermayer
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avstring.h"
#include "dict.h"
#include "internal.h"
#include "mem.h"
AVDictionaryEntry *
av_dict_get(AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
{
unsigned int i, j;
if(!m)
return NULL;
if(prev) i= prev - m->elems + 1;
else i= 0;
for(; i<m->count; i++){
const char *s= m->elems[i].key;
if(flags & AV_DICT_MATCH_CASE) for(j=0; s[j] == key[j] && key[j]; j++);
else for(j=0; toupper(s[j]) == toupper(key[j]) && key[j]; j++);
if(key[j])
continue;
if(s[j] && !(flags & AV_DICT_IGNORE_SUFFIX))
continue;
return &m->elems[i];
}
return NULL;
}
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
{
AVDictionary *m = *pm;
AVDictionaryEntry *tag = av_dict_get(m, key, NULL, flags);
char *oldval = NULL;
if(!m)
m = *pm = av_mallocz(sizeof(*m));
if(tag) {
if (flags & AV_DICT_DONT_OVERWRITE)
return 0;
if (flags & AV_DICT_APPEND)
oldval = tag->value;
else
av_free(tag->value);
av_free(tag->key);
*tag = m->elems[--m->count];
} else {
AVDictionaryEntry *tmp = av_realloc(m->elems, (m->count+1) * sizeof(*m->elems));
if(tmp) {
m->elems = tmp;
} else
return AVERROR(ENOMEM);
}
if (value) {
if (flags & AV_DICT_DONT_STRDUP_KEY) {
m->elems[m->count].key = (char*)(intptr_t)key;
} else
m->elems[m->count].key = av_strdup(key );
if (flags & AV_DICT_DONT_STRDUP_VAL) {
m->elems[m->count].value = (char*)(intptr_t)value;
} else if (oldval && flags & AV_DICT_APPEND) {
int len = strlen(oldval) + strlen(value) + 1;
if (!(oldval = av_realloc(oldval, len)))
return AVERROR(ENOMEM);
av_strlcat(oldval, value, len);
m->elems[m->count].value = oldval;
} else
m->elems[m->count].value = av_strdup(value);
m->count++;
}
if (!m->count) {
av_free(m->elems);
av_freep(pm);
}
return 0;
}
void av_dict_free(AVDictionary **pm)
{
AVDictionary *m = *pm;
if (m) {
while(m->count--) {
av_free(m->elems[m->count].key);
av_free(m->elems[m->count].value);
}
av_free(m->elems);
}
av_freep(pm);
}
void av_dict_copy(AVDictionary **dst, AVDictionary *src, int flags)
{
AVDictionaryEntry *t = NULL;
while ((t = av_dict_get(src, "", t, AV_DICT_IGNORE_SUFFIX)))
av_dict_set(dst, t->key, t->value, flags);
}