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Use bsearch() for large SFNT table directories

This commit is contained in:
Behdad Esfahbod 2017-10-31 20:11:00 -06:00
parent b0e33da02d
commit 6c04dcb28d
1 changed files with 9 additions and 12 deletions
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21
src/hb-open-file-private.hh
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@ -53,6 +53,9 @@ struct TTCHeader;
typedef struct TableRecord typedef struct TableRecord
{ {
int cmp (Tag t) const
{ return t.cmp (tag); }
inline bool sanitize (hb_sanitize_context_t *c) const inline bool sanitize (hb_sanitize_context_t *c) const
{ {
TRACE_SANITIZE (this); TRACE_SANITIZE (this);
@ -100,18 +103,12 @@ typedef struct OffsetTable
{ {
Tag t; Tag t;
t.set (tag); t.set (tag);
unsigned int count = tables.len; /* Linear-search for small tables to work around fonts with unsorted
/* TODO bsearch() */ * table list. */
for (unsigned int i = 0; i < count; i++) int i = tables.len < 64 ? tables.lsearch (t) : tables.bsearch (t);
{ if (table_index)
if (t == tables.array[i].tag) *table_index = i == -1 ? Index::NOT_FOUND_INDEX : (unsigned int) i;
{ return i != -1;
if (table_index) *table_index = i;
return true;
}
}
if (table_index) *table_index = Index::NOT_FOUND_INDEX;
return false;
} }
inline const TableRecord& get_table_by_tag (hb_tag_t tag) const inline const TableRecord& get_table_by_tag (hb_tag_t tag) const
{ {