diff options
Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-cff1-table.hh')
-rw-r--r-- | Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-cff1-table.hh | 420 |
1 files changed, 251 insertions, 169 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-cff1-table.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-cff1-table.hh index ad206511c1e..e1296c391ad 100644 --- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-cff1-table.hh +++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-cff1-table.hh @@ -27,15 +27,21 @@ #ifndef HB_OT_CFF1_TABLE_HH #define HB_OT_CFF1_TABLE_HH -#include "hb-ot-head-table.hh" #include "hb-ot-cff-common.hh" #include "hb-subset-cff1.hh" +#include "hb-draw.hh" + +#define HB_STRING_ARRAY_NAME cff1_std_strings +#define HB_STRING_ARRAY_LIST "hb-ot-cff1-std-str.hh" +#include "hb-string-array.hh" +#undef HB_STRING_ARRAY_LIST +#undef HB_STRING_ARRAY_NAME namespace CFF { /* * CFF -- Compact Font Format (CFF) - * http://www.adobe.com/content/dam/acom/en/devnet/font/pdfs/5176.CFF.pdf + * https://www.adobe.com/content/dam/acom/en/devnet/font/pdfs/5176.CFF.pdf */ #define HB_OT_TAG_cff1 HB_TAG('C','F','F',' ') @@ -49,7 +55,6 @@ template <typename Type> struct CFF1IndexOf : CFFIndexOf<HBUINT16, Type> {}; typedef CFFIndex<HBUINT16> CFF1Index; typedef CFF1Index CFF1CharStrings; -typedef FDArray<HBUINT16> CFF1FDArray; typedef Subrs<HBUINT16> CFF1Subrs; struct CFF1FDSelect : FDSelect {}; @@ -169,7 +174,7 @@ struct Encoding TRACE_SERIALIZE (this); unsigned int size = src.get_size (); Encoding *dest = c->allocate_size<Encoding> (size); - if (unlikely (dest == nullptr)) return_trace (false); + if (unlikely (!dest)) return_trace (false); memcpy (dest, &src, size); return_trace (true); } @@ -183,13 +188,13 @@ struct Encoding { TRACE_SERIALIZE (this); Encoding *dest = c->extend_min (*this); - if (unlikely (dest == nullptr)) return_trace (false); + if (unlikely (!dest)) return_trace (false); dest->format = format | ((supp_codes.length > 0) ? 0x80 : 0); switch (format) { case 0: { Encoding0 *fmt0 = c->allocate_size<Encoding0> (Encoding0::min_size + HBUINT8::static_size * enc_count); - if (unlikely (fmt0 == nullptr)) return_trace (false); + if (unlikely (!fmt0)) return_trace (false); fmt0->nCodes () = enc_count; unsigned int glyph = 0; for (unsigned int i = 0; i < code_ranges.length; i++) @@ -206,7 +211,7 @@ struct Encoding case 1: { Encoding1 *fmt1 = c->allocate_size<Encoding1> (Encoding1::min_size + Encoding1_Range::static_size * code_ranges.length); - if (unlikely (fmt1 == nullptr)) return_trace (false); + if (unlikely (!fmt1)) return_trace (false); fmt1->nRanges () = code_ranges.length; for (unsigned int i = 0; i < code_ranges.length; i++) { @@ -223,7 +228,7 @@ struct Encoding if (supp_codes.length) { CFF1SuppEncData *suppData = c->allocate_size<CFF1SuppEncData> (CFF1SuppEncData::min_size + SuppEncoding::static_size * supp_codes.length); - if (unlikely (suppData == nullptr)) return_trace (false); + if (unlikely (!suppData)) return_trace (false); suppData->nSups () = supp_codes.length; for (unsigned int i = 0; i < supp_codes.length; i++) { @@ -235,23 +240,6 @@ struct Encoding return_trace (true); } - /* parallel to above: calculate the size of a subset Encoding */ - static unsigned int calculate_serialized_size (uint8_t format, - unsigned int enc_count, - unsigned int supp_count) - { - unsigned int size = min_size; - switch (format) - { - case 0: size += Encoding0::min_size + HBUINT8::static_size * enc_count; break; - case 1: size += Encoding1::min_size + Encoding1_Range::static_size * enc_count; break; - default:return 0; - } - if (supp_count > 0) - size += CFF1SuppEncData::min_size + SuppEncoding::static_size * supp_count; - return size; - } - unsigned int get_size () const { unsigned int size = min_size; @@ -414,7 +402,7 @@ struct Charset1_2 { for (unsigned int i = 0;; i++) { if (glyph >= num_glyphs) - return 0; + return 0; if ((ranges[i].first <= sid) && (sid <= ranges[i].first + ranges[i].nLeft)) return glyph + (sid - ranges[i].first); glyph += (ranges[i].nLeft + 1); @@ -457,7 +445,7 @@ struct Charset TRACE_SERIALIZE (this); unsigned int size = src.get_size (num_glyphs); Charset *dest = c->allocate_size<Charset> (size); - if (unlikely (dest == nullptr)) return_trace (false); + if (unlikely (!dest)) return_trace (false); memcpy (dest, &src, size); return_trace (true); } @@ -470,14 +458,14 @@ struct Charset { TRACE_SERIALIZE (this); Charset *dest = c->extend_min (*this); - if (unlikely (dest == nullptr)) return_trace (false); + if (unlikely (!dest)) return_trace (false); dest->format = format; switch (format) { case 0: { Charset0 *fmt0 = c->allocate_size<Charset0> (Charset0::min_size + HBUINT16::static_size * (num_glyphs - 1)); - if (unlikely (fmt0 == nullptr)) return_trace (false); + if (unlikely (!fmt0)) return_trace (false); unsigned int glyph = 0; for (unsigned int i = 0; i < sid_ranges.length; i++) { @@ -491,10 +479,10 @@ struct Charset case 1: { Charset1 *fmt1 = c->allocate_size<Charset1> (Charset1::min_size + Charset1_Range::static_size * sid_ranges.length); - if (unlikely (fmt1 == nullptr)) return_trace (false); + if (unlikely (!fmt1)) return_trace (false); for (unsigned int i = 0; i < sid_ranges.length; i++) { - if (unlikely (!(sid_ranges[i].glyph <= 0xFF))) + if (unlikely (!(sid_ranges[i].glyph <= 0xFF))) return_trace (false); fmt1->ranges[i].first = sid_ranges[i].code; fmt1->ranges[i].nLeft = sid_ranges[i].glyph; @@ -505,10 +493,10 @@ struct Charset case 2: { Charset2 *fmt2 = c->allocate_size<Charset2> (Charset2::min_size + Charset2_Range::static_size * sid_ranges.length); - if (unlikely (fmt2 == nullptr)) return_trace (false); + if (unlikely (!fmt2)) return_trace (false); for (unsigned int i = 0; i < sid_ranges.length; i++) { - if (unlikely (!(sid_ranges[i].glyph <= 0xFFFF))) + if (unlikely (!(sid_ranges[i].glyph <= 0xFFFF))) return_trace (false); fmt2->ranges[i].first = sid_ranges[i].code; fmt2->ranges[i].nLeft = sid_ranges[i].glyph; @@ -520,19 +508,6 @@ struct Charset return_trace (true); } - /* parallel to above: calculate the size of a subset Charset */ - static unsigned int calculate_serialized_size (uint8_t format, - unsigned int count) - { - switch (format) - { - case 0: return min_size + Charset0::min_size + HBUINT16::static_size * (count - 1); - case 1: return min_size + Charset1::min_size + Charset1_Range::static_size * count; - case 2: return min_size + Charset2::min_size + Charset2_Range::static_size * count; - default:return 0; - } - } - unsigned int get_size (unsigned int num_glyphs) const { switch (format) @@ -544,8 +519,9 @@ struct Charset } } - hb_codepoint_t get_sid (hb_codepoint_t glyph) const + hb_codepoint_t get_sid (hb_codepoint_t glyph, unsigned int num_glyphs) const { + if (unlikely (glyph >= num_glyphs)) return 0; switch (format) { case 0: return u.format0.get_sid (glyph); @@ -594,7 +570,7 @@ struct Charset struct CFF1StringIndex : CFF1Index { bool serialize (hb_serialize_context_t *c, const CFF1StringIndex &strings, - unsigned int offSize_, const hb_inc_bimap_t &sidmap) + const hb_inc_bimap_t &sidmap) { TRACE_SERIALIZE (this); if (unlikely ((strings.count == 0) || (sidmap.get_population () == 0))) @@ -612,30 +588,14 @@ struct CFF1StringIndex : CFF1Index for (unsigned int i = 0; i < strings.count; i++) { hb_codepoint_t j = sidmap[i]; - if (j != CFF_UNDEF_CODE) + if (j != HB_MAP_VALUE_INVALID) bytesArray[j] = strings[i]; } - bool result = CFF1Index::serialize (c, offSize_, bytesArray); + bool result = CFF1Index::serialize (c, bytesArray); bytesArray.fini (); return_trace (result); } - - /* in parallel to above */ - unsigned int calculate_serialized_size (unsigned int &offSize_ /*OUT*/, const hb_inc_bimap_t &sidmap) const - { - offSize_ = 0; - if ((count == 0) || (sidmap.get_population () == 0)) - return count.static_size; - - unsigned int dataSize = 0; - for (unsigned int i = 0; i < count; i++) - if (sidmap[i] != CFF_UNDEF_CODE) - dataSize += length_at (i); - - offSize_ = calcOffSize(dataSize); - return CFF1Index::calculate_serialized_size (offSize_, sidmap.get_population (), dataSize); - } }; struct cff1_top_dict_interp_env_t : num_interp_env_t @@ -738,7 +698,7 @@ struct cff1_top_dict_values_t : top_dict_values_t<cff1_top_dict_val_t> unsigned int EncodingOffset; unsigned int CharsetOffset; unsigned int FDSelectOffset; - table_info_t privateDictInfo; + table_info_t privateDictInfo; }; struct cff1_top_dict_opset_t : top_dict_opset_t<cff1_top_dict_val_t> @@ -880,21 +840,10 @@ struct cff1_private_dict_values_base_t : dict_values_t<VAL> { dict_values_t<VAL>::init (); subrsOffset = 0; - localSubrs = &Null(CFF1Subrs); + localSubrs = &Null (CFF1Subrs); } void fini () { dict_values_t<VAL>::fini (); } - unsigned int calculate_serialized_size () const - { - unsigned int size = 0; - for (unsigned int i = 0; i < dict_values_t<VAL>::get_count; i++) - if (dict_values_t<VAL>::get_value (i).op == OpCode_Subrs) - size += OpCode_Size (OpCode_shortint) + 2 + OpCode_Size (OpCode_Subrs); - else - size += dict_values_t<VAL>::get_value (i).str.length; - return size; - } - unsigned int subrsOffset; const CFF1Subrs *localSubrs; }; @@ -997,6 +946,37 @@ typedef dict_interpreter_t<cff1_font_dict_opset_t, cff1_font_dict_values_t> cff1 typedef CFF1Index CFF1NameIndex; typedef CFF1IndexOf<TopDict> CFF1TopDictIndex; +struct cff1_font_dict_values_mod_t +{ + cff1_font_dict_values_mod_t() { init (); } + + void init () { init ( &Null (cff1_font_dict_values_t), CFF_UNDEF_SID ); } + + void init (const cff1_font_dict_values_t *base_, + unsigned int fontName_) + { + base = base_; + fontName = fontName_; + privateDictInfo.init (); + } + + unsigned get_count () const { return base->get_count (); } + + const op_str_t &operator [] (unsigned int i) const { return (*base)[i]; } + + const cff1_font_dict_values_t *base; + table_info_t privateDictInfo; + unsigned int fontName; +}; + +struct CFF1FDArray : FDArray<HBUINT16> +{ + /* FDArray::serialize() requires this partial specialization to compile */ + template <typename ITER, typename OP_SERIALIZER> + bool serialize (hb_serialize_context_t *c, ITER it, OP_SERIALIZER& opszr) + { return FDArray<HBUINT16>::serialize<cff1_font_dict_values_mod_t, cff1_font_dict_values_mod_t> (c, it, opszr); } +}; + } /* namespace CFF */ namespace OT { @@ -1031,7 +1011,7 @@ struct cff1 const OT::cff1 *cff = this->blob->template as<OT::cff1> (); - if (cff == &Null(OT::cff1)) + if (cff == &Null (OT::cff1)) { fini (); return; } nameIndex = &cff->nameIndex (cff); @@ -1052,7 +1032,7 @@ struct cff1 } if (is_predef_charset ()) - charset = &Null(Charset); + charset = &Null (Charset); else { charset = &StructAtOffsetOrNull<Charset> (cff, topDict.CharsetOffset); @@ -1064,16 +1044,30 @@ struct cff1 { fdArray = &StructAtOffsetOrNull<CFF1FDArray> (cff, topDict.FDArrayOffset); fdSelect = &StructAtOffsetOrNull<CFF1FDSelect> (cff, topDict.FDSelectOffset); - if (unlikely ((fdArray == &Null(CFF1FDArray)) || !fdArray->sanitize (&sc) || - (fdSelect == &Null(CFF1FDSelect)) || !fdSelect->sanitize (&sc, fdArray->count))) + if (unlikely ((fdArray == &Null (CFF1FDArray)) || !fdArray->sanitize (&sc) || + (fdSelect == &Null (CFF1FDSelect)) || !fdSelect->sanitize (&sc, fdArray->count))) { fini (); return; } fdCount = fdArray->count; } else { - fdArray = &Null(CFF1FDArray); - fdSelect = &Null(CFF1FDSelect); + fdArray = &Null (CFF1FDArray); + fdSelect = &Null (CFF1FDSelect); + } + + encoding = &Null (Encoding); + if (is_CID ()) + { + if (unlikely (charset == &Null (Charset))) { fini (); return; } + } + else + { + if (!is_predef_encoding ()) + { + encoding = &StructAtOffsetOrNull<Encoding> (cff, topDict.EncodingOffset); + if (unlikely ((encoding == &Null (Encoding)) || !encoding->sanitize (&sc))) { fini (); return; } + } } stringIndex = &StructAtOffset<CFF1StringIndex> (topDictIndex, topDictIndex->get_size ()); @@ -1086,7 +1080,7 @@ struct cff1 charStrings = &StructAtOffsetOrNull<CFF1CharStrings> (cff, topDict.charStringsOffset); - if ((charStrings == &Null(CFF1CharStrings)) || unlikely (!charStrings->sanitize (&sc))) + if ((charStrings == &Null (CFF1CharStrings)) || unlikely (!charStrings->sanitize (&sc))) { fini (); return; } num_glyphs = charStrings->count; @@ -1104,14 +1098,14 @@ struct cff1 { byte_str_t fontDictStr = (*fdArray)[i]; if (unlikely (!fontDictStr.sanitize (&sc))) { fini (); return; } - cff1_font_dict_values_t *font; + cff1_font_dict_values_t *font; cff1_font_dict_interpreter_t font_interp; font_interp.env.init (fontDictStr); font = fontDicts.push (); - if (unlikely (font == &Crap(cff1_font_dict_values_t))) { fini (); return; } + if (unlikely (font == &Crap (cff1_font_dict_values_t))) { fini (); return; } font->init (); if (unlikely (!font_interp.interpret (*font))) { fini (); return; } - PRIVDICTVAL *priv = &privateDicts[i]; + PRIVDICTVAL *priv = &privateDicts[i]; const byte_str_t privDictStr (StructAtOffset<UnsizedByteStr> (cff, font->privateDictInfo.offset), font->privateDictInfo.size); if (unlikely (!privDictStr.sanitize (&sc))) { fini (); return; } dict_interpreter_t<PRIVOPSET, PRIVDICTVAL> priv_interp; @@ -1120,15 +1114,15 @@ struct cff1 if (unlikely (!priv_interp.interpret (*priv))) { fini (); return; } priv->localSubrs = &StructAtOffsetOrNull<CFF1Subrs> (&privDictStr, priv->subrsOffset); - if (priv->localSubrs != &Null(CFF1Subrs) && + if (priv->localSubrs != &Null (CFF1Subrs) && unlikely (!priv->localSubrs->sanitize (&sc))) { fini (); return; } } } else /* non-CID */ { - cff1_top_dict_values_t *font = &topDict; - PRIVDICTVAL *priv = &privateDicts[0]; + cff1_top_dict_values_t *font = &topDict; + PRIVDICTVAL *priv = &privateDicts[0]; const byte_str_t privDictStr (StructAtOffset<UnsizedByteStr> (cff, font->privateDictInfo.offset), font->privateDictInfo.size); if (unlikely (!privDictStr.sanitize (&sc))) { fini (); return; } @@ -1138,7 +1132,7 @@ struct cff1 if (unlikely (!priv_interp.interpret (*priv))) { fini (); return; } priv->localSubrs = &StructAtOffsetOrNull<CFF1Subrs> (&privDictStr, priv->subrsOffset); - if (priv->localSubrs != &Null(CFF1Subrs) && + if (priv->localSubrs != &Null (CFF1Subrs) && unlikely (!priv->localSubrs->sanitize (&sc))) { fini (); return; } } @@ -1154,7 +1148,7 @@ struct cff1 blob = nullptr; } - bool is_valid () const { return blob != nullptr; } + bool is_valid () const { return blob; } bool is_CID () const { return topDict.is_CID (); } bool is_predef_charset () const { return topDict.CharsetOffset <= ExpertSubsetCharset; } @@ -1165,69 +1159,18 @@ struct cff1 if (unlikely (sid == CFF_UNDEF_SID)) return 0; - if (charset != &Null(Charset)) + if (charset != &Null (Charset)) return charset->get_glyph (sid, num_glyphs); else if ((topDict.CharsetOffset == ISOAdobeCharset) && (code <= 228 /*zcaron*/)) return sid; return 0; } - protected: - hb_blob_t *blob; - hb_sanitize_context_t sc; - - public: - const Charset *charset; - const CFF1NameIndex *nameIndex; - const CFF1TopDictIndex *topDictIndex; - const CFF1StringIndex *stringIndex; - const CFF1Subrs *globalSubrs; - const CFF1CharStrings *charStrings; - const CFF1FDArray *fdArray; - const CFF1FDSelect *fdSelect; - unsigned int fdCount; - - cff1_top_dict_values_t topDict; - hb_vector_t<cff1_font_dict_values_t> fontDicts; - hb_vector_t<PRIVDICTVAL> privateDicts; - - unsigned int num_glyphs; - }; - - struct accelerator_t : accelerator_templ_t<cff1_private_dict_opset_t, cff1_private_dict_values_t> - { - HB_INTERNAL bool get_extents (hb_font_t *font, hb_codepoint_t glyph, hb_glyph_extents_t *extents) const; - HB_INTERNAL bool get_seac_components (hb_codepoint_t glyph, hb_codepoint_t *base, hb_codepoint_t *accent) const; - }; - - struct accelerator_subset_t : accelerator_templ_t<cff1_private_dict_opset_subset, cff1_private_dict_values_subset_t> - { - void init (hb_face_t *face) - { - SUPER::init (face); - if (blob == nullptr) return; - - const OT::cff1 *cff = this->blob->as<OT::cff1> (); - encoding = &Null(Encoding); - if (is_CID ()) - { - if (unlikely (charset == &Null(Charset))) { fini (); return; } - } - else - { - if (!is_predef_encoding ()) - { - encoding = &StructAtOffsetOrNull<Encoding> (cff, topDict.EncodingOffset); - if (unlikely ((encoding == &Null (Encoding)) || !encoding->sanitize (&sc))) { fini (); return; } - } - } - } - bool is_predef_encoding () const { return topDict.EncodingOffset <= ExpertEncoding; } hb_codepoint_t glyph_to_code (hb_codepoint_t glyph) const { - if (encoding != &Null(Encoding)) + if (encoding != &Null (Encoding)) return encoding->get_code (glyph); else { @@ -1251,20 +1194,20 @@ struct cff1 hb_codepoint_t glyph_to_sid (hb_codepoint_t glyph) const { - if (charset != &Null(Charset)) - return charset->get_sid (glyph); + if (charset != &Null (Charset)) + return charset->get_sid (glyph, num_glyphs); else { hb_codepoint_t sid = 0; switch (topDict.CharsetOffset) { - case ISOAdobeCharset: + case ISOAdobeCharset: if (glyph <= 228 /*zcaron*/) sid = glyph; break; - case ExpertCharset: + case ExpertCharset: sid = lookup_expert_charset_for_sid (glyph); break; - case ExpertSubsetCharset: + case ExpertSubsetCharset: sid = lookup_expert_subset_charset_for_sid (glyph); break; default: @@ -1274,35 +1217,174 @@ struct cff1 } } - const Encoding *encoding; + hb_codepoint_t sid_to_glyph (hb_codepoint_t sid) const + { + if (charset != &Null (Charset)) + return charset->get_glyph (sid, num_glyphs); + else + { + hb_codepoint_t glyph = 0; + switch (topDict.CharsetOffset) + { + case ISOAdobeCharset: + if (sid <= 228 /*zcaron*/) glyph = sid; + break; + case ExpertCharset: + glyph = lookup_expert_charset_for_glyph (sid); + break; + case ExpertSubsetCharset: + glyph = lookup_expert_subset_charset_for_glyph (sid); + break; + default: + break; + } + return glyph; + } + } - private: - typedef accelerator_templ_t<cff1_private_dict_opset_subset, cff1_private_dict_values_subset_t> SUPER; + protected: + hb_blob_t *blob; + hb_sanitize_context_t sc; + + public: + const Encoding *encoding; + const Charset *charset; + const CFF1NameIndex *nameIndex; + const CFF1TopDictIndex *topDictIndex; + const CFF1StringIndex *stringIndex; + const CFF1Subrs *globalSubrs; + const CFF1CharStrings *charStrings; + const CFF1FDArray *fdArray; + const CFF1FDSelect *fdSelect; + unsigned int fdCount; + + cff1_top_dict_values_t topDict; + hb_vector_t<cff1_font_dict_values_t> + fontDicts; + hb_vector_t<PRIVDICTVAL> privateDicts; + + unsigned int num_glyphs; }; - bool subset (hb_subset_plan_t *plan) const + struct accelerator_t : accelerator_templ_t<cff1_private_dict_opset_t, cff1_private_dict_values_t> { - hb_blob_t *cff_prime = nullptr; - - bool success = true; - if (hb_subset_cff1 (plan, &cff_prime)) { - success = success && plan->add_table (HB_OT_TAG_cff1, cff_prime); - hb_blob_t *head_blob = hb_sanitize_context_t().reference_table<head> (plan->source); - success = success && head_blob && plan->add_table (HB_OT_TAG_head, head_blob); - hb_blob_destroy (head_blob); - } else { - success = false; + void init (hb_face_t *face) + { + SUPER::init (face); + + if (!is_valid ()) return; + if (is_CID ()) return; + + /* fill glyph_names */ + for (hb_codepoint_t gid = 0; gid < num_glyphs; gid++) + { + hb_codepoint_t sid = glyph_to_sid (gid); + gname_t gname; + gname.sid = sid; + if (sid < cff1_std_strings_length) + gname.name = cff1_std_strings (sid); + else + { + byte_str_t ustr = (*stringIndex)[sid - cff1_std_strings_length]; + gname.name = hb_bytes_t ((const char*)ustr.arrayZ, ustr.length); + } + if (unlikely (!gname.name.arrayZ)) { fini (); return; } + glyph_names.push (gname); + } + glyph_names.qsort (); } - hb_blob_destroy (cff_prime); - return success; - } + void fini () + { + glyph_names.fini (); + + SUPER::fini (); + } + + bool get_glyph_name (hb_codepoint_t glyph, + char *buf, unsigned int buf_len) const + { + if (!buf) return true; + if (unlikely (!is_valid ())) return false; + if (is_CID()) return false; + hb_codepoint_t sid = glyph_to_sid (glyph); + const char *str; + size_t str_len; + if (sid < cff1_std_strings_length) + { + hb_bytes_t byte_str = cff1_std_strings (sid); + str = byte_str.arrayZ; + str_len = byte_str.length; + } + else + { + byte_str_t ubyte_str = (*stringIndex)[sid - cff1_std_strings_length]; + str = (const char *)ubyte_str.arrayZ; + str_len = ubyte_str.length; + } + if (!str_len) return false; + unsigned int len = hb_min (buf_len - 1, str_len); + strncpy (buf, (const char*)str, len); + buf[len] = '\0'; + return true; + } + + bool get_glyph_from_name (const char *name, int len, + hb_codepoint_t *glyph) const + { + if (len < 0) len = strlen (name); + if (unlikely (!len)) return false; + + gname_t key = { hb_bytes_t (name, len), 0 }; + const gname_t *gname = glyph_names.bsearch (key); + if (!gname) return false; + hb_codepoint_t gid = sid_to_glyph (gname->sid); + if (!gid && gname->sid) return false; + *glyph = gid; + return true; + } + + HB_INTERNAL bool get_extents (hb_font_t *font, hb_codepoint_t glyph, hb_glyph_extents_t *extents) const; + HB_INTERNAL bool get_seac_components (hb_codepoint_t glyph, hb_codepoint_t *base, hb_codepoint_t *accent) const; +#ifdef HB_EXPERIMENTAL_API + HB_INTERNAL bool get_path (hb_font_t *font, hb_codepoint_t glyph, draw_helper_t &draw_helper) const; +#endif + + private: + struct gname_t + { + hb_bytes_t name; + uint16_t sid; + + static int cmp (const void *a_, const void *b_) + { + const gname_t *a = (const gname_t *)a_; + const gname_t *b = (const gname_t *)b_; + int minlen = hb_min (a->name.length, b->name.length); + int ret = strncmp (a->name.arrayZ, b->name.arrayZ, minlen); + if (ret) return ret; + return a->name.length - b->name.length; + } + + int cmp (const gname_t &a) const { return cmp (&a, this); } + }; + + hb_sorted_vector_t<gname_t> glyph_names; + + typedef accelerator_templ_t<cff1_private_dict_opset_t, cff1_private_dict_values_t> SUPER; + }; + + struct accelerator_subset_t : accelerator_templ_t<cff1_private_dict_opset_subset, cff1_private_dict_values_subset_t> {}; + + bool subset (hb_subset_context_t *c) const { return hb_subset_cff1 (c); } protected: HB_INTERNAL static hb_codepoint_t lookup_standard_encoding_for_code (hb_codepoint_t sid); HB_INTERNAL static hb_codepoint_t lookup_expert_encoding_for_code (hb_codepoint_t sid); HB_INTERNAL static hb_codepoint_t lookup_expert_charset_for_sid (hb_codepoint_t glyph); HB_INTERNAL static hb_codepoint_t lookup_expert_subset_charset_for_sid (hb_codepoint_t glyph); + HB_INTERNAL static hb_codepoint_t lookup_expert_charset_for_glyph (hb_codepoint_t sid); + HB_INTERNAL static hb_codepoint_t lookup_expert_subset_charset_for_glyph (hb_codepoint_t sid); HB_INTERNAL static hb_codepoint_t lookup_standard_encoding_for_sid (hb_codepoint_t code); public: |