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avcodec/htmlsubtitles: handle leading whitespace before tag names

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This fixes cases like `</ font>`.

Signed-off-by: Clément Bœsch <u@pkh.me>
This commit is contained in:
Rodger Combs 2015-07-15 12:27:04 -05:00 committed by Clément Bœsch
parent a388ca359d
commit d2d020bb32
1 changed files with 10 additions and 7 deletions
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17
libavcodec/htmlsubtitles.c
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@ -92,15 +92,18 @@ void ff_htmlmarkup_to_ass(void *log_ctx, AVBPrint *dst, const char *in)
tag_close = in[1] == '/';
len = 0;
if (sscanf(in+tag_close+1, "%127[^>]>%n", buffer, &len) >= 1 && len > 0) {
if ((param = strchr(buffer, ' ')))
const char *tagname = buffer;
while (*tagname == ' ')
tagname++;
if ((param = strchr(tagname, ' ')))
*param++ = 0;
if ((!tag_close && sptr < FF_ARRAY_ELEMS(stack)) ||
( tag_close && sptr > 0 && !strcmp(stack[sptr-1].tag, buffer))) {
( tag_close && sptr > 0 && !strcmp(stack[sptr-1].tag, tagname))) {
int i, j, unknown = 0;
in += len + tag_close;
if (!tag_close)
memset(stack+sptr, 0, sizeof(*stack));
if (!strcmp(buffer, "font")) {
if (!strcmp(tagname, "font")) {
if (tag_close) {
for (i=PARAM_NUMBER-1; i>=0; i--)
if (stack[sptr-1].param[i][0])
@ -143,11 +146,11 @@ void ff_htmlmarkup_to_ass(void *log_ctx, AVBPrint *dst, const char *in)
if (stack[sptr].param[i][0])
av_bprintf(dst, "%s", stack[sptr].param[i]);
}
} else if (!buffer[1] && strspn(buffer, "bisu") == 1) {
av_bprintf(dst, "{\\%c%d}", buffer[0], !tag_close);
} else if (!tagname[1] && strspn(tagname, "bisu") == 1) {
av_bprintf(dst, "{\\%c%d}", tagname[0], !tag_close);
} else {
unknown = 1;
snprintf(tmp, sizeof(tmp), "</%s>", buffer);
snprintf(tmp, sizeof(tmp), "</%s>", tagname);
}
if (tag_close) {
sptr--;
@ -155,7 +158,7 @@ void ff_htmlmarkup_to_ass(void *log_ctx, AVBPrint *dst, const char *in)
in -= len + tag_close;
av_bprint_chars(dst, *in, 1);
} else
av_strlcpy(stack[sptr++].tag, buffer,
av_strlcpy(stack[sptr++].tag, tagname,
sizeof(stack[0].tag));
break;
}