diff options
Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/hb-ot-name-table.hh')
-rw-r--r-- | src/3rdparty/harfbuzz-ng/src/hb-ot-name-table.hh | 565 |
1 files changed, 1 insertions, 564 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/hb-ot-name-table.hh b/src/3rdparty/harfbuzz-ng/src/hb-ot-name-table.hh index 6f4461cc15..85653224cc 100644 --- a/src/3rdparty/harfbuzz-ng/src/hb-ot-name-table.hh +++ b/src/3rdparty/harfbuzz-ng/src/hb-ot-name-table.hh @@ -27,569 +27,6 @@ #ifndef HB_OT_NAME_TABLE_HH #define HB_OT_NAME_TABLE_HH -#include "hb-open-type.hh" -#include "hb-ot-name-language.hh" -#include "hb-aat-layout.hh" -#include "hb-utf.hh" - - -namespace OT { - -template <typename in_utf_t, typename out_utf_t> -inline unsigned int -hb_ot_name_convert_utf (hb_bytes_t bytes, - unsigned int *text_size /* IN/OUT */, - typename out_utf_t::codepoint_t *text /* OUT */) -{ - unsigned int src_len = bytes.length / sizeof (typename in_utf_t::codepoint_t); - const typename in_utf_t::codepoint_t *src = (const typename in_utf_t::codepoint_t *) bytes.arrayZ; - const typename in_utf_t::codepoint_t *src_end = src + src_len; - - typename out_utf_t::codepoint_t *dst = text; - - hb_codepoint_t unicode; - const hb_codepoint_t replacement = HB_BUFFER_REPLACEMENT_CODEPOINT_DEFAULT; - - if (text_size && *text_size) - { - (*text_size)--; /* Save room for NUL-termination. */ - const typename out_utf_t::codepoint_t *dst_end = text + *text_size; - - while (src < src_end && dst < dst_end) - { - const typename in_utf_t::codepoint_t *src_next = in_utf_t::next (src, src_end, &unicode, replacement); - typename out_utf_t::codepoint_t *dst_next = out_utf_t::encode (dst, dst_end, unicode); - if (dst_next == dst) - break; /* Out-of-room. */ - - dst = dst_next; - src = src_next; - } - - *text_size = dst - text; - *dst = 0; /* NUL-terminate. */ - } - - /* Accumulate length of rest. */ - unsigned int dst_len = dst - text; - while (src < src_end) - { - src = in_utf_t::next (src, src_end, &unicode, replacement); - dst_len += out_utf_t::encode_len (unicode); - } - return dst_len; -} - -#define entry_score var.u16[0] -#define entry_index var.u16[1] - - -/* - * name -- Naming - * https://docs.microsoft.com/en-us/typography/opentype/spec/name - */ -#define HB_OT_TAG_name HB_TAG('n','a','m','e') - -#define UNSUPPORTED 42 - -struct NameRecord -{ - hb_language_t language (hb_face_t *face) const - { -#ifndef HB_NO_OT_NAME_LANGUAGE - unsigned int p = platformID; - unsigned int l = languageID; - - if (p == 3) - return _hb_ot_name_language_for_ms_code (l); - - if (p == 1) - return _hb_ot_name_language_for_mac_code (l); - -#ifndef HB_NO_OT_NAME_LANGUAGE_AAT - if (p == 0) - return face->table.ltag->get_language (l); -#endif - -#endif - return HB_LANGUAGE_INVALID; - } - - uint16_t score () const - { - /* Same order as in cmap::find_best_subtable(). */ - unsigned int p = platformID; - unsigned int e = encodingID; - - /* 32-bit. */ - if (p == 3 && e == 10) return 0; - if (p == 0 && e == 6) return 1; - if (p == 0 && e == 4) return 2; - - /* 16-bit. */ - if (p == 3 && e == 1) return 3; - if (p == 0 && e == 3) return 4; - if (p == 0 && e == 2) return 5; - if (p == 0 && e == 1) return 6; - if (p == 0 && e == 0) return 7; - - /* Symbol. */ - if (p == 3 && e == 0) return 8; - - /* We treat all Mac Latin names as ASCII only. */ - if (p == 1 && e == 0) return 10; /* 10 is magic number :| */ - - return UNSUPPORTED; - } - - NameRecord* copy (hb_serialize_context_t *c, const void *base -#ifdef HB_EXPERIMENTAL_API - , const hb_hashmap_t<hb_ot_name_record_ids_t, hb_bytes_t> *name_table_overrides -#endif - ) const - { - TRACE_SERIALIZE (this); - HB_UNUSED auto snap = c->snapshot (); - auto *out = c->embed (this); - if (unlikely (!out)) return_trace (nullptr); -#ifdef HB_EXPERIMENTAL_API - hb_ot_name_record_ids_t record_ids (platformID, encodingID, languageID, nameID); - hb_bytes_t* name_bytes; - - if (name_table_overrides->has (record_ids, &name_bytes)) { - hb_bytes_t encoded_bytes = *name_bytes; - char *name_str_utf16_be = nullptr; - - if (platformID != 1) - { - 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; - 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); - - unsigned encoded_byte_len = text_size * hb_utf16_be_t::codepoint_t::static_size; - if (!encoded_byte_len || !c->check_assign (out->length, encoded_byte_len, HB_SERIALIZE_ERROR_INT_OVERFLOW)) { - c->revert (snap); - hb_free (name_str_utf16_be); - return_trace (nullptr); - } - - encoded_bytes = hb_bytes_t (name_str_utf16_be, encoded_byte_len); - } - else - { - // mac platform, copy the UTF-8 string(all ascii characters) as is - if (!c->check_assign (out->length, encoded_bytes.length, HB_SERIALIZE_ERROR_INT_OVERFLOW)) { - c->revert (snap); - return_trace (nullptr); - } - } - - out->offset = 0; - c->push (); - encoded_bytes.copy (c); - c->add_link (out->offset, c->pop_pack (), hb_serialize_context_t::Tail, 0); - hb_free (name_str_utf16_be); - } - else -#endif - { - out->offset.serialize_copy (c, offset, base, 0, hb_serialize_context_t::Tail, length); - } - return_trace (out); - } - - bool isUnicode () const - { - unsigned int p = platformID; - unsigned int e = encodingID; - - return (p == 0 || - (p == 3 && (e == 0 || e == 1 || e == 10))); - } - - static int cmp (const void *pa, const void *pb) - { - const NameRecord *a = (const NameRecord *)pa; - const NameRecord *b = (const NameRecord *)pb; - - if (a->platformID != b->platformID) - return a->platformID - b->platformID; - - if (a->encodingID != b->encodingID) - return a->encodingID - b->encodingID; - - if (a->languageID != b->languageID) - return a->languageID - b->languageID; - - if (a->nameID != b->nameID) - return a->nameID - b->nameID; - - if (a->length != b->length) - return a->length - b->length; - - return 0; - } - - bool sanitize (hb_sanitize_context_t *c, const void *base) const - { - TRACE_SANITIZE (this); - return_trace (c->check_struct (this) && offset.sanitize (c, base, length)); - } - - HBUINT16 platformID; /* Platform ID. */ - HBUINT16 encodingID; /* Platform-specific encoding ID. */ - HBUINT16 languageID; /* Language ID. */ - HBUINT16 nameID; /* Name ID. */ - HBUINT16 length; /* String length (in bytes). */ - NNOffset16To<UnsizedArrayOf<HBUINT8>> - offset; /* String offset from start of storage area (in bytes). */ - public: - DEFINE_SIZE_STATIC (12); -}; - -static int -_hb_ot_name_entry_cmp_key (const void *pa, const void *pb, bool exact) -{ - const hb_ot_name_entry_t *a = (const hb_ot_name_entry_t *) pa; - const hb_ot_name_entry_t *b = (const hb_ot_name_entry_t *) pb; - - /* Compare by name_id, then language. */ - - if (a->name_id != b->name_id) - return a->name_id - b->name_id; - - if (a->language == b->language) return 0; - if (!a->language) return -1; - if (!b->language) return +1; - - const char *astr = hb_language_to_string (a->language); - const char *bstr = hb_language_to_string (b->language); - - signed c = strcmp (astr, bstr); - - // 'a' is the user request, and 'b' is string in the font. - // If eg. user asks for "en-us" and font has "en", approve. - if (!exact && c && - hb_language_matches (b->language, a->language)) - return 0; - - return c; -} - -static int -_hb_ot_name_entry_cmp (const void *pa, const void *pb) -{ - /* Compare by name_id, then language, then score, then index. */ - - int v = _hb_ot_name_entry_cmp_key (pa, pb, true); - if (v) - return v; - - const hb_ot_name_entry_t *a = (const hb_ot_name_entry_t *) pa; - const hb_ot_name_entry_t *b = (const hb_ot_name_entry_t *) pb; - - if (a->entry_score != b->entry_score) - return a->entry_score - b->entry_score; - - if (a->entry_index != b->entry_index) - return a->entry_index - b->entry_index; - - return 0; -} - -struct name -{ - static constexpr hb_tag_t tableTag = HB_OT_TAG_name; - - unsigned int get_size () const - { return min_size + count * nameRecordZ.item_size; } - - template <typename Iterator, - hb_requires (hb_is_source_of (Iterator, const NameRecord &))> - bool serialize (hb_serialize_context_t *c, - Iterator it, - const void *src_string_pool -#ifdef HB_EXPERIMENTAL_API - , const hb_vector_t<hb_ot_name_record_ids_t>& insert_name_records - , const hb_hashmap_t<hb_ot_name_record_ids_t, hb_bytes_t> *name_table_overrides -#endif - ) - { - TRACE_SERIALIZE (this); - - if (unlikely (!c->extend_min ((*this)))) return_trace (false); - - unsigned total_count = it.len () -#ifdef HB_EXPERIMENTAL_API - + insert_name_records.length -#endif - ; - this->format = 0; - if (!c->check_assign (this->count, total_count, HB_SERIALIZE_ERROR_INT_OVERFLOW)) - return false; - - NameRecord *name_records = (NameRecord *) hb_calloc (total_count, NameRecord::static_size); - if (unlikely (!name_records)) return_trace (false); - - hb_array_t<NameRecord> records (name_records, total_count); - - for (const NameRecord& record : it) - { - hb_memcpy (name_records, &record, NameRecord::static_size); - name_records++; - } - -#ifdef HB_EXPERIMENTAL_API - for (unsigned i = 0; i < insert_name_records.length; i++) - { - const hb_ot_name_record_ids_t& ids = insert_name_records[i]; - NameRecord record; - record.platformID = ids.platform_id; - record.encodingID = ids.encoding_id; - record.languageID = ids.language_id; - record.nameID = ids.name_id; - record.length = 0; // handled in NameRecord copy() - record.offset = 0; - memcpy (name_records, &record, NameRecord::static_size); - name_records++; - } -#endif - - records.qsort (); - - c->copy_all (records, - src_string_pool -#ifdef HB_EXPERIMENTAL_API - , name_table_overrides -#endif - ); - hb_free (records.arrayZ); - - - if (unlikely (c->ran_out_of_room ())) return_trace (false); - - this->stringOffset = c->length (); - - return_trace (true); - } - - bool subset (hb_subset_context_t *c) const - { - TRACE_SUBSET (this); - - name *name_prime = c->serializer->start_embed<name> (); - if (unlikely (!name_prime)) return_trace (false); - -#ifdef HB_EXPERIMENTAL_API - const hb_hashmap_t<hb_ot_name_record_ids_t, hb_bytes_t> *name_table_overrides = - c->plan->name_table_overrides; -#endif - - auto it = - + nameRecordZ.as_array (count) - | hb_filter (c->plan->name_ids, &NameRecord::nameID) - | hb_filter (c->plan->name_languages, &NameRecord::languageID) - | hb_filter ([&] (const NameRecord& namerecord) { - return - (c->plan->flags & HB_SUBSET_FLAGS_NAME_LEGACY) - || namerecord.isUnicode (); - }) -#ifdef HB_EXPERIMENTAL_API - | hb_filter ([&] (const NameRecord& namerecord) { - if (name_table_overrides->is_empty ()) - return true; - hb_ot_name_record_ids_t rec_ids (namerecord.platformID, - namerecord.encodingID, - namerecord.languageID, - namerecord.nameID); - - hb_bytes_t *p; - if (name_table_overrides->has (rec_ids, &p) && - (*p).length == 0) - return false; - return true; - }) -#endif - ; - -#ifdef HB_EXPERIMENTAL_API - hb_vector_t<hb_ot_name_record_ids_t> insert_name_records; - if (!name_table_overrides->is_empty ()) - { - if (unlikely (!insert_name_records.alloc (name_table_overrides->get_population ()))) - return_trace (false); - for (const auto& record_ids : name_table_overrides->keys ()) - { - if (name_table_overrides->get (record_ids).length == 0) - continue; - if (has_name_record_with_ids (record_ids)) - continue; - insert_name_records.push (record_ids); - } - } -#endif - - return (name_prime->serialize (c->serializer, it, - std::addressof (this + stringOffset) -#ifdef HB_EXPERIMENTAL_API - , insert_name_records - , name_table_overrides -#endif - )); - } - - bool sanitize_records (hb_sanitize_context_t *c) const - { - TRACE_SANITIZE (this); - const void *string_pool = (this+stringOffset).arrayZ; - return_trace (nameRecordZ.sanitize (c, count, string_pool)); - } - - bool sanitize (hb_sanitize_context_t *c) const - { - TRACE_SANITIZE (this); - return_trace (c->check_struct (this) && - likely (format == 0 || format == 1) && - c->check_array (nameRecordZ.arrayZ, count) && - c->check_range (this, stringOffset) && - sanitize_records (c)); - } - - struct accelerator_t - { - accelerator_t (hb_face_t *face) - { - this->table = hb_sanitize_context_t ().reference_table<name> (face); - assert (this->table.get_length () >= this->table->stringOffset); - this->pool = (const char *) (const void *) (this->table+this->table->stringOffset); - this->pool_len = this->table.get_length () - this->table->stringOffset; - const hb_array_t<const NameRecord> all_names (this->table->nameRecordZ.arrayZ, - this->table->count); - - this->names.alloc (all_names.length); - - for (unsigned int i = 0; i < all_names.length; i++) - { - hb_ot_name_entry_t *entry = this->names.push (); - - entry->name_id = all_names[i].nameID; - entry->language = all_names[i].language (face); - entry->entry_score = all_names[i].score (); - entry->entry_index = i; - } - - this->names.qsort (_hb_ot_name_entry_cmp); - /* Walk and pick best only for each name_id,language pair, - * while dropping unsupported encodings. */ - unsigned int j = 0; - for (unsigned int i = 0; i < this->names.length; i++) - { - if (this->names[i].entry_score == UNSUPPORTED || - this->names[i].language == HB_LANGUAGE_INVALID) - continue; - if (i && - this->names[i - 1].name_id == this->names[i].name_id && - this->names[i - 1].language == this->names[i].language) - continue; - this->names[j++] = this->names[i]; - } - this->names.resize (j); - } - ~accelerator_t () - { - this->table.destroy (); - } - - int get_index (hb_ot_name_id_t name_id, - hb_language_t language, - unsigned int *width=nullptr) const - { - const hb_ot_name_entry_t key = {name_id, {0}, language}; - const hb_ot_name_entry_t *entry = hb_bsearch (key, (const hb_ot_name_entry_t *) this->names, - this->names.length, - sizeof (hb_ot_name_entry_t), - _hb_ot_name_entry_cmp_key, - true); - - if (!entry) - { - entry = hb_bsearch (key, (const hb_ot_name_entry_t *) this->names, - this->names.length, - sizeof (hb_ot_name_entry_t), - _hb_ot_name_entry_cmp_key, - false); - } - - if (!entry) - return -1; - - if (width) - *width = entry->entry_score < 10 ? 2 : 1; - - return entry->entry_index; - } - - hb_bytes_t get_name (unsigned int idx) const - { - const hb_array_t<const NameRecord> all_names (table->nameRecordZ.arrayZ, table->count); - const NameRecord &record = all_names[idx]; - const hb_bytes_t string_pool (pool, pool_len); - return string_pool.sub_array (record.offset, record.length); - } - - private: - const char *pool; - unsigned int pool_len; - public: - hb_blob_ptr_t<name> table; - hb_vector_t<hb_ot_name_entry_t> names; - }; - - private: - // sometimes NameRecords are not sorted in the font file, so use linear search - // here - bool has_name_record_with_ids (const hb_ot_name_record_ids_t& record_ids) const - { - for (const auto& record : nameRecordZ.as_array (count)) - { - if (record.platformID == record_ids.platform_id && - record.encodingID == record_ids.encoding_id && - record.languageID == record_ids.language_id && - record.nameID == record_ids.name_id) - return true; - } - return false; - } - - public: - /* We only implement format 0 for now. */ - HBUINT16 format; /* Format selector (=0/1). */ - HBUINT16 count; /* Number of name records. */ - NNOffset16To<UnsizedArrayOf<HBUINT8>> - stringOffset; /* Offset to start of string storage (from start of table). */ - UnsizedArrayOf<NameRecord> - nameRecordZ; /* The name records where count is the number of records. */ - public: - DEFINE_SIZE_ARRAY (6, nameRecordZ); -}; - -#undef entry_index -#undef entry_score - -struct name_accelerator_t : name::accelerator_t { - name_accelerator_t (hb_face_t *face) : name::accelerator_t (face) {} -}; - -} /* namespace OT */ - +#include "OT/name/name.hh" #endif /* HB_OT_NAME_TABLE_HH */ |