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[cff] Add total_size to INDEX

This commit is contained in:
Behdad Esfahbod 2022-12-01 16:52:29 -07:00
parent 3843000660
commit 36e1a6339c
1 changed files with 13 additions and 0 deletions
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13
src/hb-ot-cff-common.hh
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@ -117,6 +117,19 @@ struct CFFIndex
return_trace (true); return_trace (true);
} }
template <typename Iterable,
hb_requires (hb_is_iterable (Iterable))>
static unsigned total_size (const Iterable &iterable)
{
auto it = + hb_iter (iterable) | hb_map (hb_iter) | hb_map (hb_len);
if (!it) return 0;
unsigned total = + it | hb_reduce (hb_add, 0);
unsigned off_size = (hb_bit_storage (total + 1) + 7) / 8;
return min_size + HBUINT8::static_size + (hb_len (it) + 1) * off_size + total;
}
void set_offset_at (unsigned int index, unsigned int offset) void set_offset_at (unsigned int index, unsigned int offset)
{ {
assert (index <= count); assert (index <= count);