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[subset] extract a method to flip off composite instruction flag

This commit is contained in:
Rod Sheeter 2018-02-28 11:15:08 -08:00
parent 6836a82142
commit 20d5739923
1 changed files with 15 additions and 9 deletions
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24
src/hb-subset-glyf.cc
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@ -136,6 +136,20 @@ _update_components (hb_subset_plan_t * plan,
}
}
static bool _remove_composite_instruction_flag(char *glyf_prime, unsigned int length)
{
/* remove WE_HAVE_INSTRUCTIONS from flags in dest */
OT::glyf::CompositeGlyphHeader::Iterator composite_it;
if (unlikely (!OT::glyf::CompositeGlyphHeader::get_iterator (glyf_prime, length, &composite_it))) return false;
const OT::glyf::CompositeGlyphHeader *glyph;
do {
glyph = composite_it.current;
OT::HBUINT16 *flags = const_cast<OT::HBUINT16 *> (&glyph->flags);
flags->set ( (uint16_t) *flags & ~OT::glyf::CompositeGlyphHeader::WE_HAVE_INSTRUCTIONS);
} while (composite_it.move_to_next());
return true;
}
static bool
_write_glyf_and_loca_prime (hb_subset_plan_t *plan,
const OT::glyf::accelerator_t &glyf,
@ -181,15 +195,7 @@ _write_glyf_and_loca_prime (hb_subset_plan_t *plan,
/* if the instructions end at the end this was a composite glyph */
if (instruction_end == end_offset)
{
/* remove WE_HAVE_INSTRUCTIONS from flags in dest */
OT::glyf::CompositeGlyphHeader::Iterator composite_it;
if (unlikely (!OT::glyf::CompositeGlyphHeader::get_iterator (glyf_prime_data_next, length, &composite_it))) return false;
const OT::glyf::CompositeGlyphHeader *glyph;
do {
glyph = composite_it.current;
OT::HBUINT16 *flags = const_cast<OT::HBUINT16 *> (&glyph->flags);
flags->set ( (uint16_t) *flags & ~OT::glyf::CompositeGlyphHeader::WE_HAVE_INSTRUCTIONS);
} while (composite_it.move_to_next());
if (unlikely (!_remove_composite_instruction_flag (glyf_prime_data_next, length))) return false;
}
else
/* zero instruction length, which is just before instruction_start */