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Make parse_key_value from httpauth a common lavf internal function

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Originally committed as revision 24832 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Martin Storsjö
2010-08-19 14:49:53 +00:00
parent 8d88402013
commit f9c399c4fd
3 changed files with 84 additions and 59 deletions
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54
libavformat/utils.c
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@@ -3707,3 +3707,57 @@ int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
return av_write_frame(dst, &local_pkt);
}
void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
void *context)
{
const char *ptr = str;
/* Parse key=value pairs. */
for (;;) {
const char *key;
char *dest = NULL, *dest_end;
int key_len, dest_len = 0;
/* Skip whitespace and potential commas. */
while (*ptr && (isspace(*ptr) || *ptr == ','))
ptr++;
if (!*ptr)
break;
key = ptr;
if (!(ptr = strchr(key, '=')))
break;
ptr++;
key_len = ptr - key;
callback_get_buf(context, key, key_len, &dest, &dest_len);
dest_end = dest + dest_len - 1;
if (*ptr == '\"') {
ptr++;
while (*ptr && *ptr != '\"') {
if (*ptr == '\\') {
if (!ptr[1])
break;
if (dest && dest < dest_end)
*dest++ = ptr[1];
ptr += 2;
} else {
if (dest && dest < dest_end)
*dest++ = *ptr;
ptr++;
}
}
if (*ptr == '\"')
ptr++;
} else {
for (; *ptr && !(isspace(*ptr) || *ptr == ','); ptr++)
if (dest && dest < dest_end)
*dest++ = *ptr;
}
if (dest)
*dest = 0;
}
}