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[name] Simplify buffer-length calculation

This commit is contained in:
Behdad Esfahbod 2022-11-08 14:15:56 -07:00
parent 55edf59d52
commit c158b626c3
1 changed files with 8 additions and 3 deletions
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11
src/hb-ot-name-table.hh
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@ -151,11 +151,16 @@ struct NameRecord
if (unlikely (!out)) return_trace (nullptr);
if (name_table_overrides->has (nameID)) {
hb_bytes_t name_bytes = name_table_overrides->get (nameID);
char *name_str_utf16_be = (char *) hb_calloc ((name_bytes.length + 1) * 4, 1);
unsigned text_size = hb_ot_name_convert_utf<hb_utf8_t, hb_utf16_be_t> (name_bytes, nullptr,
(hb_utf16_be_t::codepoint_t *) name_str_utf16_be);
unsigned text_size = hb_ot_name_convert_utf<hb_utf8_t, hb_utf16_be_t> (name_bytes, nullptr, nullptr);
text_size++; // needs to consider NULL terminator for use in hb_ot_name_convert_utf()
unsigned byte_len = text_size * hb_utf16_be_t::codepoint_t::static_size;
char *name_str_utf16_be = (char *) hb_calloc (byte_len, 1);
if (!name_str_utf16_be)
{
c->revert (snap);
return_trace (nullptr);
}
hb_ot_name_convert_utf<hb_utf8_t, hb_utf16_be_t> (name_bytes, &text_size,
(hb_utf16_be_t::codepoint_t *) name_str_utf16_be);