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[HB] Correctly skip glyphs when applying (Chain)Context lookups

This commit is contained in:
Behdad Esfahbod 2009-05-18 04:15:25 -04:00
parent 7cff75babd
commit e73a0c2a90
1 changed files with 11 additions and 3 deletions
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14
src/hb-ot-layout-gsubgpos-private.h
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@ -166,12 +166,20 @@ static inline bool apply_lookup (LOOKUP_ARGS_DEF,
{
unsigned int record_count = lookupCount;
const LookupRecord *record = lookupRecord;
unsigned int end = MIN (buffer->in_length, buffer->in_pos + context_length);
if (HB_UNLIKELY (buffer->in_pos + count > end))
return false;
/* XXX We have to jump non-matching glyphs when applying too, right? */
/* TODO We don't support lookupRecord arrays that are not increasing:
* Should be easy for in_place ones at least. */
for (unsigned int i = 0; i < count;)
{
for (unsigned int i = 0; i < count; i++) {
while (!_hb_ot_layout_check_glyph_property (layout, IN_CURITEM (), lookup_flag, &property)) {
if (HB_UNLIKELY (buffer->in_pos == end))
return true;
/* No lookup applied for this index */
_hb_buffer_next_glyph (buffer);
}
if (record_count && i == record->sequenceIndex)
{
unsigned int old_pos = buffer->in_pos;