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avcodec/htmlsubtitles: Factor open brace handling into its own function

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Suggested-by: wm4
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-06-13 00:01:04 +02:00
parent 4132218b87
commit 14b834c45a
1 changed files with 26 additions and 18 deletions
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44
libavcodec/htmlsubtitles.c
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@ -51,6 +51,30 @@ static void rstrip_spaces_buf(AVBPrint *buf)
buf->str[--buf->len] = 0;
}
/* skip all {\xxx} substrings except for {\an%d}
and all microdvd like styles such as {Y:xxx} */
static void handle_open_brace(AVBPrint *dst, const char **inp, int *an, int *closing_brace_missing)
{
int len = 0;
const char *in = *inp;
*an += sscanf(in, "{\\an%*1u}%n", &len) >= 0 && len > 0;
if (!*closing_brace_missing) {
if ( (*an != 1 && in[1] == '\\')
|| (in[1] && strchr("CcFfoPSsYy", in[1]) && in[2] == ':')) {
char *bracep = strchr(in+2, '}');
if (bracep) {
*inp = bracep;
return;
} else
*closing_brace_missing = 1;
}
}
av_bprint_chars(dst, *in, 1);
}
int ff_htmlmarkup_to_ass(void *log_ctx, AVBPrint *dst, const char *in)
{
char *param, buffer[128], tmp[128];
@ -80,24 +104,8 @@ int ff_htmlmarkup_to_ass(void *log_ctx, AVBPrint *dst, const char *in)
if (!line_start)
av_bprint_chars(dst, *in, 1);
break;
case '{': /* skip all {\xxx} substrings except for {\an%d}
and all microdvd like styles such as {Y:xxx} */
len = 0;
an += sscanf(in, "{\\an%*1u}%n", &len) >= 0 && len > 0;
if (!closing_brace_missing) {
if ( (an != 1 && in[1] == '\\')
|| (in[1] && strchr("CcFfoPSsYy", in[1]) && in[2] == ':')) {
char *bracep = strchr(in+2, '}');
if (bracep) {
in = bracep;
break;
} else
closing_brace_missing = 1;
}
}
av_bprint_chars(dst, *in, 1);
case '{':
handle_open_brace(dst, &in, &an, &closing_brace_missing);
break;
case '<':
tag_close = in[1] == '/';