diff options
Diffstat (limited to 'thirdparty/harfbuzz/src/hb-ot-cmap-table.hh')
| -rw-r--r-- | thirdparty/harfbuzz/src/hb-ot-cmap-table.hh | 224 |
1 files changed, 175 insertions, 49 deletions
diff --git a/thirdparty/harfbuzz/src/hb-ot-cmap-table.hh b/thirdparty/harfbuzz/src/hb-ot-cmap-table.hh index 09c9fe93f3..523196fa79 100644 --- a/thirdparty/harfbuzz/src/hb-ot-cmap-table.hh +++ b/thirdparty/harfbuzz/src/hb-ot-cmap-table.hh @@ -909,7 +909,7 @@ struct DefaultUVS : SortedArray32Of<UnicodeValueRange> hb_codepoint_t first = arrayZ[i].startUnicodeValue; hb_codepoint_t last = hb_min ((hb_codepoint_t) (first + arrayZ[i].additionalCount), (hb_codepoint_t) HB_UNICODE_MAX); - out->add_range (first, hb_min (last, 0x10FFFFu)); + out->add_range (first, last); } } @@ -925,37 +925,75 @@ struct DefaultUVS : SortedArray32Of<UnicodeValueRange> if (unlikely (!c->copy<HBUINT32> (len))) return nullptr; unsigned init_len = c->length (); - hb_codepoint_t lastCode = HB_MAP_VALUE_INVALID; - int count = -1; - - for (const UnicodeValueRange& _ : as_array ()) + if (this->len > unicodes->get_population () * hb_bit_storage ((unsigned) this->len)) { - for (const unsigned addcnt : hb_range ((unsigned) _.additionalCount + 1)) + hb_codepoint_t start = HB_SET_VALUE_INVALID; + hb_codepoint_t end = HB_SET_VALUE_INVALID; + + for (hb_codepoint_t u = HB_SET_VALUE_INVALID; + unicodes->next (&u);) { - unsigned curEntry = (unsigned) _.startUnicodeValue + addcnt; - if (!unicodes->has (curEntry)) continue; - count += 1; - if (lastCode == HB_MAP_VALUE_INVALID) - lastCode = curEntry; - else if (lastCode + count != curEntry) + if (!as_array ().bsearch (u)) + continue; + if (start == HB_SET_VALUE_INVALID) { + start = u; + end = start - 1; + } + if (end + 1 != u || end - start == 255) + { UnicodeValueRange rec; - rec.startUnicodeValue = lastCode; - rec.additionalCount = count - 1; + rec.startUnicodeValue = start; + rec.additionalCount = end - start; c->copy<UnicodeValueRange> (rec); - - lastCode = curEntry; - count = 0; + start = u; } + end = u; + } + if (start != HB_SET_VALUE_INVALID) + { + UnicodeValueRange rec; + rec.startUnicodeValue = start; + rec.additionalCount = end - start; + c->copy<UnicodeValueRange> (rec); } - } - if (lastCode != HB_MAP_VALUE_INVALID) + } + else { - UnicodeValueRange rec; - rec.startUnicodeValue = lastCode; - rec.additionalCount = count; - c->copy<UnicodeValueRange> (rec); + hb_codepoint_t lastCode = HB_SET_VALUE_INVALID; + int count = -1; + + for (const UnicodeValueRange& _ : *this) + { + hb_codepoint_t curEntry = (hb_codepoint_t) (_.startUnicodeValue - 1); + hb_codepoint_t end = curEntry + _.additionalCount + 2; + + for (; unicodes->next (&curEntry) && curEntry < end;) + { + count += 1; + if (lastCode == HB_SET_VALUE_INVALID) + lastCode = curEntry; + else if (lastCode + count != curEntry) + { + UnicodeValueRange rec; + rec.startUnicodeValue = lastCode; + rec.additionalCount = count - 1; + c->copy<UnicodeValueRange> (rec); + + lastCode = curEntry; + count = 0; + } + } + } + + if (lastCode != HB_MAP_VALUE_INVALID) + { + UnicodeValueRange rec; + rec.startUnicodeValue = lastCode; + rec.additionalCount = count; + c->copy<UnicodeValueRange> (rec); + } } if (c->length () - init_len == 0) @@ -1474,32 +1512,80 @@ struct EncodingRecord DEFINE_SIZE_STATIC (8); }; +struct cmap; + struct SubtableUnicodesCache { private: - const void* base; - hb_hashmap_t<intptr_t, hb::unique_ptr<hb_set_t>> cached_unicodes; + hb_blob_ptr_t<cmap> base_blob; + const char* base; + hb_hashmap_t<unsigned, hb::unique_ptr<hb_set_t>> cached_unicodes; public: + + static SubtableUnicodesCache* create (hb_blob_ptr_t<cmap> source_table) + { + SubtableUnicodesCache* cache = + (SubtableUnicodesCache*) hb_malloc (sizeof(SubtableUnicodesCache)); + new (cache) SubtableUnicodesCache (source_table); + return cache; + } + + static void destroy (void* value) { + if (!value) return; + + SubtableUnicodesCache* cache = (SubtableUnicodesCache*) value; + cache->~SubtableUnicodesCache (); + hb_free (cache); + } + SubtableUnicodesCache(const void* cmap_base) - : base(cmap_base), cached_unicodes() {} + : base_blob(), + base ((const char*) cmap_base), + cached_unicodes () + {} + + SubtableUnicodesCache(hb_blob_ptr_t<cmap> base_blob_) + : base_blob(base_blob_), + base ((const char *) base_blob.get()), + cached_unicodes () + {} + + ~SubtableUnicodesCache() + { + base_blob.destroy (); + } + + bool same_base(const void* other) const + { + return other == (const void*) base; + } - hb_set_t* set_for (const EncodingRecord* record) + const hb_set_t* set_for (const EncodingRecord* record, + SubtableUnicodesCache& mutable_cache) const { - if (!cached_unicodes.has ((intptr_t) record)) + if (cached_unicodes.has ((unsigned) ((const char *) record - base))) + return cached_unicodes.get ((unsigned) ((const char *) record - base)); + + return mutable_cache.set_for (record); + } + + const hb_set_t* set_for (const EncodingRecord* record) + { + if (!cached_unicodes.has ((unsigned) ((const char *) record - base))) { hb_set_t *s = hb_set_create (); if (unlikely (s->in_error ())) return hb_set_get_empty (); - + (base+record->subtable).collect_unicodes (s); - if (unlikely (!cached_unicodes.set ((intptr_t) record, hb::unique_ptr<hb_set_t> {s}))) + if (unlikely (!cached_unicodes.set ((unsigned) ((const char *) record - base), hb::unique_ptr<hb_set_t> {s}))) return hb_set_get_empty (); return s; } - return cached_unicodes.get ((intptr_t) record); + return cached_unicodes.get ((unsigned) ((const char *) record - base)); } }; @@ -1523,13 +1609,30 @@ struct cmap { static constexpr hb_tag_t tableTag = HB_OT_TAG_cmap; + + static SubtableUnicodesCache* create_filled_cache(hb_blob_ptr_t<cmap> source_table) { + const cmap* cmap = source_table.get(); + auto it = + + hb_iter (cmap->encodingRecord) + | hb_filter ([&](const EncodingRecord& _) { + return cmap::filter_encoding_records_for_subset (cmap, _); + }) + ; + + SubtableUnicodesCache* cache = SubtableUnicodesCache::create(source_table); + for (const EncodingRecord& _ : it) + cache->set_for(&_); // populate the cache for this encoding record. + + return cache; + } + template<typename Iterator, typename EncodingRecIter, hb_requires (hb_is_iterator (EncodingRecIter))> bool serialize (hb_serialize_context_t *c, Iterator it, EncodingRecIter encodingrec_iter, const void *base, - const hb_subset_plan_t *plan, + hb_subset_plan_t *plan, bool drop_format_4 = false) { if (unlikely (!c->extend_min ((*this)))) return false; @@ -1538,7 +1641,14 @@ struct cmap unsigned format4objidx = 0, format12objidx = 0, format14objidx = 0; auto snap = c->snapshot (); - SubtableUnicodesCache unicodes_cache (base); + SubtableUnicodesCache local_unicodes_cache (base); + const SubtableUnicodesCache* unicodes_cache = &local_unicodes_cache; + + if (plan->accelerator && + plan->accelerator->cmap_cache && + plan->accelerator->cmap_cache->same_base (base)) + unicodes_cache = plan->accelerator->cmap_cache; + for (const EncodingRecord& _ : encodingrec_iter) { if (c->in_error ()) @@ -1547,7 +1657,7 @@ struct cmap unsigned format = (base+_.subtable).u.format; if (format != 4 && format != 12 && format != 14) continue; - hb_set_t* unicodes_set = unicodes_cache.set_for (&_); + const hb_set_t* unicodes_set = unicodes_cache->set_for (&_, local_unicodes_cache); if (!drop_format_4 && format == 4) { @@ -1566,7 +1676,13 @@ struct cmap else if (format == 12) { - if (_can_drop (_, *unicodes_set, base, unicodes_cache, + it | hb_map (hb_first), encodingrec_iter)) continue; + if (_can_drop (_, + *unicodes_set, + base, + *unicodes_cache, + local_unicodes_cache, + + it | hb_map (hb_first), encodingrec_iter)) + continue; c->copy (_, + it | hb_filter (*unicodes_set, hb_first), 12u, base, plan, &format12objidx); } else if (format == 14) c->copy (_, it, 14u, base, plan, &format14objidx); @@ -1585,7 +1701,8 @@ struct cmap bool _can_drop (const EncodingRecord& cmap12, const hb_set_t& cmap12_unicodes, const void* base, - SubtableUnicodesCache& unicodes_cache, + const SubtableUnicodesCache& unicodes_cache, + SubtableUnicodesCache& local_unicodes_cache, Iterator subset_unicodes, EncodingRecordIterator encoding_records) { @@ -1616,7 +1733,7 @@ struct cmap || (base+_.subtable).get_language() != target_language) continue; - hb_set_t* sibling_unicodes = unicodes_cache.set_for (&_); + const hb_set_t* sibling_unicodes = unicodes_cache.set_for (&_, local_unicodes_cache); auto cmap12 = + subset_unicodes | hb_filter (cmap12_unicodes); auto sibling = + subset_unicodes | hb_filter (*sibling_unicodes); @@ -1653,17 +1770,9 @@ struct cmap auto encodingrec_iter = + hb_iter (encodingRecord) - | hb_filter ([&] (const EncodingRecord& _) - { - if ((_.platformID == 0 && _.encodingID == 3) || - (_.platformID == 0 && _.encodingID == 4) || - (_.platformID == 3 && _.encodingID == 1) || - (_.platformID == 3 && _.encodingID == 10) || - (this + _.subtable).u.format == 14) - return true; - - return false; - }) + | hb_filter ([&](const EncodingRecord& _) { + return cmap::filter_encoding_records_for_subset (this, _); + }) ; if (unlikely (!encodingrec_iter.len ())) return_trace (false); @@ -1692,7 +1801,11 @@ struct cmap { return (_.second != HB_MAP_VALUE_INVALID); }) ; - return_trace (cmap_prime->serialize (c->serializer, it, encodingrec_iter, this, c->plan)); + return_trace (cmap_prime->serialize (c->serializer, + it, + encodingrec_iter, + this, + c->plan)); } const CmapSubtable *find_best_subtable (bool *symbol = nullptr) const @@ -1928,6 +2041,19 @@ struct cmap encodingRecord.sanitize (c, this)); } + private: + + static bool filter_encoding_records_for_subset(const cmap* cmap, + const EncodingRecord& _) + { + return + (_.platformID == 0 && _.encodingID == 3) || + (_.platformID == 0 && _.encodingID == 4) || + (_.platformID == 3 && _.encodingID == 1) || + (_.platformID == 3 && _.encodingID == 10) || + (cmap + _.subtable).u.format == 14; + } + protected: HBUINT16 version; /* Table version number (0). */ SortedArray16Of<EncodingRecord> |