2 * Copyright © 2018 Adobe Inc.
4 * This is part of HarfBuzz, a text shaping library.
6 * Permission is hereby granted, without written agreement and without
7 * license or royalty fees, to use, copy, modify, and distribute this
8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
24 * Adobe Author(s): Michiharu Ariza
27 #ifndef HB_OT_CFF1_TABLE_HH
28 #define HB_OT_CFF1_TABLE_HH
30 #include "hb-ot-cff-common.hh"
31 #include "hb-subset-cff1.hh"
34 #define HB_STRING_ARRAY_NAME cff1_std_strings
35 #define HB_STRING_ARRAY_LIST "hb-ot-cff1-std-str.hh"
36 #include "hb-string-array.hh"
37 #undef HB_STRING_ARRAY_LIST
38 #undef HB_STRING_ARRAY_NAME
43 * CFF -- Compact Font Format (CFF)
44 * https://www.adobe.com/content/dam/acom/en/devnet/font/pdfs/5176.CFF.pdf
46 #define HB_OT_TAG_cff1 HB_TAG('C','F','F',' ')
48 #define CFF_UNDEF_SID CFF_UNDEF_CODE
50 enum EncodingID { StandardEncoding = 0, ExpertEncoding = 1 };
51 enum CharsetID { ISOAdobeCharset = 0, ExpertCharset = 1, ExpertSubsetCharset = 2 };
53 typedef CFFIndex<HBUINT16> CFF1Index;
54 template <typename Type> struct CFF1IndexOf : CFFIndexOf<HBUINT16, Type> {};
56 typedef CFFIndex<HBUINT16> CFF1Index;
57 typedef CFF1Index CFF1CharStrings;
58 typedef Subrs<HBUINT16> CFF1Subrs;
60 struct CFF1FDSelect : FDSelect {};
64 bool sanitize (hb_sanitize_context_t *c) const
66 TRACE_SANITIZE (this);
67 return_trace (codes.sanitize (c));
70 hb_codepoint_t get_code (hb_codepoint_t glyph) const
74 if (glyph < nCodes ())
76 return (hb_codepoint_t)codes[glyph];
79 return CFF_UNDEF_CODE;
82 HBUINT8 &nCodes () { return codes.len; }
83 HBUINT8 nCodes () const { return codes.len; }
85 ArrayOf<HBUINT8, HBUINT8> codes;
87 DEFINE_SIZE_ARRAY_SIZED (1, codes);
90 struct Encoding1_Range {
91 bool sanitize (hb_sanitize_context_t *c) const
93 TRACE_SANITIZE (this);
94 return_trace (c->check_struct (this));
100 DEFINE_SIZE_STATIC (2);
104 bool sanitize (hb_sanitize_context_t *c) const
106 TRACE_SANITIZE (this);
107 return_trace (ranges.sanitize (c));
110 hb_codepoint_t get_code (hb_codepoint_t glyph) const
114 for (unsigned int i = 0; i < nRanges (); i++)
116 if (glyph <= ranges[i].nLeft)
118 hb_codepoint_t code = (hb_codepoint_t) ranges[i].first + glyph;
119 return (likely (code < 0x100) ? code: CFF_UNDEF_CODE);
121 glyph -= (ranges[i].nLeft + 1);
123 return CFF_UNDEF_CODE;
126 HBUINT8 &nRanges () { return ranges.len; }
127 HBUINT8 nRanges () const { return ranges.len; }
129 ArrayOf<Encoding1_Range, HBUINT8> ranges;
131 DEFINE_SIZE_ARRAY_SIZED (1, ranges);
134 struct SuppEncoding {
135 bool sanitize (hb_sanitize_context_t *c) const
137 TRACE_SANITIZE (this);
138 return_trace (c->check_struct (this));
144 DEFINE_SIZE_STATIC (3);
147 struct CFF1SuppEncData {
148 bool sanitize (hb_sanitize_context_t *c) const
150 TRACE_SANITIZE (this);
151 return_trace (supps.sanitize (c));
154 void get_codes (hb_codepoint_t sid, hb_vector_t<hb_codepoint_t> &codes) const
156 for (unsigned int i = 0; i < nSups (); i++)
157 if (sid == supps[i].glyph)
158 codes.push (supps[i].code);
161 HBUINT8 &nSups () { return supps.len; }
162 HBUINT8 nSups () const { return supps.len; }
164 ArrayOf<SuppEncoding, HBUINT8> supps;
166 DEFINE_SIZE_ARRAY_SIZED (1, supps);
171 /* serialize a fullset Encoding */
172 bool serialize (hb_serialize_context_t *c, const Encoding &src)
174 TRACE_SERIALIZE (this);
175 unsigned int size = src.get_size ();
176 Encoding *dest = c->allocate_size<Encoding> (size);
177 if (unlikely (!dest)) return_trace (false);
178 memcpy (dest, &src, size);
182 /* serialize a subset Encoding */
183 bool serialize (hb_serialize_context_t *c,
185 unsigned int enc_count,
186 const hb_vector_t<code_pair_t>& code_ranges,
187 const hb_vector_t<code_pair_t>& supp_codes)
189 TRACE_SERIALIZE (this);
190 Encoding *dest = c->extend_min (*this);
191 if (unlikely (!dest)) return_trace (false);
192 dest->format = format | ((supp_codes.length > 0) ? 0x80 : 0);
196 Encoding0 *fmt0 = c->allocate_size<Encoding0> (Encoding0::min_size + HBUINT8::static_size * enc_count);
197 if (unlikely (!fmt0)) return_trace (false);
198 fmt0->nCodes () = enc_count;
199 unsigned int glyph = 0;
200 for (unsigned int i = 0; i < code_ranges.length; i++)
202 hb_codepoint_t code = code_ranges[i].code;
203 for (int left = (int)code_ranges[i].glyph; left >= 0; left--)
204 fmt0->codes[glyph++] = code++;
205 if (unlikely (!((glyph <= 0x100) && (code <= 0x100))))
206 return_trace (false);
213 Encoding1 *fmt1 = c->allocate_size<Encoding1> (Encoding1::min_size + Encoding1_Range::static_size * code_ranges.length);
214 if (unlikely (!fmt1)) return_trace (false);
215 fmt1->nRanges () = code_ranges.length;
216 for (unsigned int i = 0; i < code_ranges.length; i++)
218 if (unlikely (!((code_ranges[i].code <= 0xFF) && (code_ranges[i].glyph <= 0xFF))))
219 return_trace (false);
220 fmt1->ranges[i].first = code_ranges[i].code;
221 fmt1->ranges[i].nLeft = code_ranges[i].glyph;
228 if (supp_codes.length)
230 CFF1SuppEncData *suppData = c->allocate_size<CFF1SuppEncData> (CFF1SuppEncData::min_size + SuppEncoding::static_size * supp_codes.length);
231 if (unlikely (!suppData)) return_trace (false);
232 suppData->nSups () = supp_codes.length;
233 for (unsigned int i = 0; i < supp_codes.length; i++)
235 suppData->supps[i].code = supp_codes[i].code;
236 suppData->supps[i].glyph = supp_codes[i].glyph; /* actually SID */
243 unsigned int get_size () const
245 unsigned int size = min_size;
246 switch (table_format ())
248 case 0: size += u.format0.get_size (); break;
249 case 1: size += u.format1.get_size (); break;
251 if (has_supplement ())
252 size += suppEncData ().get_size ();
256 hb_codepoint_t get_code (hb_codepoint_t glyph) const
258 switch (table_format ())
260 case 0: return u.format0.get_code (glyph);
261 case 1: return u.format1.get_code (glyph);
266 uint8_t table_format () const { return format & 0x7F; }
267 bool has_supplement () const { return format & 0x80; }
269 void get_supplement_codes (hb_codepoint_t sid, hb_vector_t<hb_codepoint_t> &codes) const
272 if (has_supplement ())
273 suppEncData().get_codes (sid, codes);
276 bool sanitize (hb_sanitize_context_t *c) const
278 TRACE_SANITIZE (this);
279 if (unlikely (!c->check_struct (this)))
280 return_trace (false);
282 switch (table_format ())
284 case 0: if (unlikely (!u.format0.sanitize (c))) { return_trace (false); } break;
285 case 1: if (unlikely (!u.format1.sanitize (c))) { return_trace (false); } break;
286 default:return_trace (false);
288 return_trace (likely (!has_supplement () || suppEncData ().sanitize (c)));
292 const CFF1SuppEncData &suppEncData () const
294 switch (table_format ())
296 case 0: return StructAfter<CFF1SuppEncData> (u.format0.codes[u.format0.nCodes ()-1]);
297 case 1: return StructAfter<CFF1SuppEncData> (u.format1.ranges[u.format1.nRanges ()-1]);
298 default:return Null (CFF1SuppEncData);
308 /* CFF1SuppEncData suppEncData; */
315 bool sanitize (hb_sanitize_context_t *c, unsigned int num_glyphs) const
317 TRACE_SANITIZE (this);
318 return_trace (c->check_struct (this) && sids[num_glyphs - 1].sanitize (c));
321 hb_codepoint_t get_sid (hb_codepoint_t glyph) const
326 return sids[glyph - 1];
329 hb_codepoint_t get_glyph (hb_codepoint_t sid, unsigned int num_glyphs) const
334 for (unsigned int glyph = 1; glyph < num_glyphs; glyph++)
336 if (sids[glyph-1] == sid)
342 unsigned int get_size (unsigned int num_glyphs) const
344 assert (num_glyphs > 0);
345 return HBUINT16::static_size * (num_glyphs - 1);
348 HBUINT16 sids[HB_VAR_ARRAY];
350 DEFINE_SIZE_ARRAY(0, sids);
353 template <typename TYPE>
354 struct Charset_Range {
355 bool sanitize (hb_sanitize_context_t *c) const
357 TRACE_SANITIZE (this);
358 return_trace (c->check_struct (this));
364 DEFINE_SIZE_STATIC (HBUINT16::static_size + TYPE::static_size);
367 template <typename TYPE>
369 bool sanitize (hb_sanitize_context_t *c, unsigned int num_glyphs) const
371 TRACE_SANITIZE (this);
372 if (unlikely (!c->check_struct (this)))
373 return_trace (false);
375 for (unsigned int i = 0; num_glyphs > 0; i++)
377 if (unlikely (!ranges[i].sanitize (c) || (num_glyphs < ranges[i].nLeft + 1)))
378 return_trace (false);
379 num_glyphs -= (ranges[i].nLeft + 1);
384 hb_codepoint_t get_sid (hb_codepoint_t glyph) const
386 if (glyph == 0) return 0;
388 for (unsigned int i = 0;; i++)
390 if (glyph <= ranges[i].nLeft)
391 return (hb_codepoint_t)ranges[i].first + glyph;
392 glyph -= (ranges[i].nLeft + 1);
398 hb_codepoint_t get_glyph (hb_codepoint_t sid, unsigned int num_glyphs) const
400 if (sid == 0) return 0;
401 hb_codepoint_t glyph = 1;
402 for (unsigned int i = 0;; i++)
404 if (glyph >= num_glyphs)
406 if ((ranges[i].first <= sid) && (sid <= ranges[i].first + ranges[i].nLeft))
407 return glyph + (sid - ranges[i].first);
408 glyph += (ranges[i].nLeft + 1);
414 unsigned int get_size (unsigned int num_glyphs) const
416 unsigned int size = HBUINT8::static_size;
417 int glyph = (int)num_glyphs;
421 for (unsigned int i = 0; glyph > 0; i++)
423 glyph -= (ranges[i].nLeft + 1);
424 size += Charset_Range<TYPE>::static_size;
430 Charset_Range<TYPE> ranges[HB_VAR_ARRAY];
432 DEFINE_SIZE_ARRAY (0, ranges);
435 typedef Charset1_2<HBUINT8> Charset1;
436 typedef Charset1_2<HBUINT16> Charset2;
437 typedef Charset_Range<HBUINT8> Charset1_Range;
438 typedef Charset_Range<HBUINT16> Charset2_Range;
442 /* serialize a fullset Charset */
443 bool serialize (hb_serialize_context_t *c, const Charset &src, unsigned int num_glyphs)
445 TRACE_SERIALIZE (this);
446 unsigned int size = src.get_size (num_glyphs);
447 Charset *dest = c->allocate_size<Charset> (size);
448 if (unlikely (!dest)) return_trace (false);
449 memcpy (dest, &src, size);
453 /* serialize a subset Charset */
454 bool serialize (hb_serialize_context_t *c,
456 unsigned int num_glyphs,
457 const hb_vector_t<code_pair_t>& sid_ranges)
459 TRACE_SERIALIZE (this);
460 Charset *dest = c->extend_min (*this);
461 if (unlikely (!dest)) return_trace (false);
462 dest->format = format;
467 Charset0 *fmt0 = c->allocate_size<Charset0> (Charset0::min_size + HBUINT16::static_size * (num_glyphs - 1));
468 if (unlikely (!fmt0)) return_trace (false);
469 unsigned int glyph = 0;
470 for (unsigned int i = 0; i < sid_ranges.length; i++)
472 hb_codepoint_t sid = sid_ranges[i].code;
473 for (int left = (int)sid_ranges[i].glyph; left >= 0; left--)
474 fmt0->sids[glyph++] = sid++;
481 Charset1 *fmt1 = c->allocate_size<Charset1> (Charset1::min_size + Charset1_Range::static_size * sid_ranges.length);
482 if (unlikely (!fmt1)) return_trace (false);
483 for (unsigned int i = 0; i < sid_ranges.length; i++)
485 if (unlikely (!(sid_ranges[i].glyph <= 0xFF)))
486 return_trace (false);
487 fmt1->ranges[i].first = sid_ranges[i].code;
488 fmt1->ranges[i].nLeft = sid_ranges[i].glyph;
495 Charset2 *fmt2 = c->allocate_size<Charset2> (Charset2::min_size + Charset2_Range::static_size * sid_ranges.length);
496 if (unlikely (!fmt2)) return_trace (false);
497 for (unsigned int i = 0; i < sid_ranges.length; i++)
499 if (unlikely (!(sid_ranges[i].glyph <= 0xFFFF)))
500 return_trace (false);
501 fmt2->ranges[i].first = sid_ranges[i].code;
502 fmt2->ranges[i].nLeft = sid_ranges[i].glyph;
511 unsigned int get_size (unsigned int num_glyphs) const
515 case 0: return min_size + u.format0.get_size (num_glyphs);
516 case 1: return min_size + u.format1.get_size (num_glyphs);
517 case 2: return min_size + u.format2.get_size (num_glyphs);
522 hb_codepoint_t get_sid (hb_codepoint_t glyph, unsigned int num_glyphs) const
524 if (unlikely (glyph >= num_glyphs)) return 0;
527 case 0: return u.format0.get_sid (glyph);
528 case 1: return u.format1.get_sid (glyph);
529 case 2: return u.format2.get_sid (glyph);
534 hb_codepoint_t get_glyph (hb_codepoint_t sid, unsigned int num_glyphs) const
538 case 0: return u.format0.get_glyph (sid, num_glyphs);
539 case 1: return u.format1.get_glyph (sid, num_glyphs);
540 case 2: return u.format2.get_glyph (sid, num_glyphs);
545 bool sanitize (hb_sanitize_context_t *c) const
547 TRACE_SANITIZE (this);
548 if (unlikely (!c->check_struct (this)))
549 return_trace (false);
553 case 0: return_trace (u.format0.sanitize (c, c->get_num_glyphs ()));
554 case 1: return_trace (u.format1.sanitize (c, c->get_num_glyphs ()));
555 case 2: return_trace (u.format2.sanitize (c, c->get_num_glyphs ()));
556 default:return_trace (false);
570 struct CFF1StringIndex : CFF1Index
572 bool serialize (hb_serialize_context_t *c, const CFF1StringIndex &strings,
573 const hb_inc_bimap_t &sidmap)
575 TRACE_SERIALIZE (this);
576 if (unlikely ((strings.count == 0) || (sidmap.get_population () == 0)))
578 if (unlikely (!c->extend_min (this->count)))
579 return_trace (false);
584 byte_str_array_t bytesArray;
586 if (!bytesArray.resize (sidmap.get_population ()))
587 return_trace (false);
588 for (unsigned int i = 0; i < strings.count; i++)
590 hb_codepoint_t j = sidmap[i];
591 if (j != HB_MAP_VALUE_INVALID)
592 bytesArray[j] = strings[i];
595 bool result = CFF1Index::serialize (c, bytesArray);
597 return_trace (result);
601 struct cff1_top_dict_interp_env_t : num_interp_env_t
603 cff1_top_dict_interp_env_t ()
604 : num_interp_env_t(), prev_offset(0), last_offset(0) {}
606 unsigned int prev_offset;
607 unsigned int last_offset;
610 struct name_dict_values_t
612 enum name_dict_val_index_t
631 for (unsigned int i = 0; i < ValCount; i++)
632 values[i] = CFF_UNDEF_SID;
635 unsigned int& operator[] (unsigned int i)
636 { assert (i < ValCount); return values[i]; }
638 unsigned int operator[] (unsigned int i) const
639 { assert (i < ValCount); return values[i]; }
641 static enum name_dict_val_index_t name_op_to_index (op_code_t op)
644 default: // can't happen - just make some compiler happy
649 case OpCode_Copyright:
651 case OpCode_FullName:
653 case OpCode_FamilyName:
657 case OpCode_PostScript:
659 case OpCode_FontName:
661 case OpCode_BaseFontName:
666 unsigned int values[ValCount];
669 struct cff1_top_dict_val_t : op_str_t
671 unsigned int last_arg_offset;
674 struct cff1_top_dict_values_t : top_dict_values_t<cff1_top_dict_val_t>
678 top_dict_values_t<cff1_top_dict_val_t>::init ();
686 privateDictInfo.init ();
688 void fini () { top_dict_values_t<cff1_top_dict_val_t>::fini (); }
691 { return nameSIDs[name_dict_values_t::registry] != CFF_UNDEF_SID; }
693 name_dict_values_t nameSIDs;
694 unsigned int ros_supplement_offset;
695 unsigned int ros_supplement;
696 unsigned int cidCount;
698 unsigned int EncodingOffset;
699 unsigned int CharsetOffset;
700 unsigned int FDSelectOffset;
701 table_info_t privateDictInfo;
704 struct cff1_top_dict_opset_t : top_dict_opset_t<cff1_top_dict_val_t>
706 static void process_op (op_code_t op, cff1_top_dict_interp_env_t& env, cff1_top_dict_values_t& dictval)
708 cff1_top_dict_val_t val;
709 val.last_arg_offset = (env.last_offset-1) - dictval.opStart; /* offset to the last argument */
714 case OpCode_Copyright:
715 case OpCode_FullName:
716 case OpCode_FamilyName:
718 case OpCode_PostScript:
719 case OpCode_BaseFontName:
720 dictval.nameSIDs[name_dict_values_t::name_op_to_index (op)] = env.argStack.pop_uint ();
723 case OpCode_isFixedPitch:
724 case OpCode_ItalicAngle:
725 case OpCode_UnderlinePosition:
726 case OpCode_UnderlineThickness:
727 case OpCode_PaintType:
728 case OpCode_CharstringType:
729 case OpCode_UniqueID:
730 case OpCode_StrokeWidth:
731 case OpCode_SyntheticBase:
732 case OpCode_CIDFontVersion:
733 case OpCode_CIDFontRevision:
734 case OpCode_CIDFontType:
736 case OpCode_FontBBox:
738 case OpCode_BaseFontBlend:
742 case OpCode_CIDCount:
743 dictval.cidCount = env.argStack.pop_uint ();
748 dictval.ros_supplement = env.argStack.pop_uint ();
749 dictval.nameSIDs[name_dict_values_t::ordering] = env.argStack.pop_uint ();
750 dictval.nameSIDs[name_dict_values_t::registry] = env.argStack.pop_uint ();
754 case OpCode_Encoding:
755 dictval.EncodingOffset = env.argStack.pop_uint ();
757 if (unlikely (dictval.EncodingOffset == 0)) return;
761 dictval.CharsetOffset = env.argStack.pop_uint ();
763 if (unlikely (dictval.CharsetOffset == 0)) return;
766 case OpCode_FDSelect:
767 dictval.FDSelectOffset = env.argStack.pop_uint ();
772 dictval.privateDictInfo.offset = env.argStack.pop_uint ();
773 dictval.privateDictInfo.size = env.argStack.pop_uint ();
778 env.last_offset = env.str_ref.offset;
779 top_dict_opset_t<cff1_top_dict_val_t>::process_op (op, env, dictval);
780 /* Record this operand below if stack is empty, otherwise done */
781 if (!env.argStack.is_empty ()) return;
785 if (unlikely (env.in_error ())) return;
787 dictval.add_op (op, env.str_ref, val);
791 struct cff1_font_dict_values_t : dict_values_t<op_str_t>
795 dict_values_t<op_str_t>::init ();
796 privateDictInfo.init ();
797 fontName = CFF_UNDEF_SID;
799 void fini () { dict_values_t<op_str_t>::fini (); }
801 table_info_t privateDictInfo;
802 unsigned int fontName;
805 struct cff1_font_dict_opset_t : dict_opset_t
807 static void process_op (op_code_t op, num_interp_env_t& env, cff1_font_dict_values_t& dictval)
810 case OpCode_FontName:
811 dictval.fontName = env.argStack.pop_uint ();
814 case OpCode_FontMatrix:
815 case OpCode_PaintType:
819 dictval.privateDictInfo.offset = env.argStack.pop_uint ();
820 dictval.privateDictInfo.size = env.argStack.pop_uint ();
825 dict_opset_t::process_op (op, env);
826 if (!env.argStack.is_empty ()) return;
830 if (unlikely (env.in_error ())) return;
832 dictval.add_op (op, env.str_ref);
836 template <typename VAL>
837 struct cff1_private_dict_values_base_t : dict_values_t<VAL>
841 dict_values_t<VAL>::init ();
843 localSubrs = &Null (CFF1Subrs);
845 void fini () { dict_values_t<VAL>::fini (); }
847 unsigned int subrsOffset;
848 const CFF1Subrs *localSubrs;
851 typedef cff1_private_dict_values_base_t<op_str_t> cff1_private_dict_values_subset_t;
852 typedef cff1_private_dict_values_base_t<num_dict_val_t> cff1_private_dict_values_t;
854 struct cff1_private_dict_opset_t : dict_opset_t
856 static void process_op (op_code_t op, num_interp_env_t& env, cff1_private_dict_values_t& dictval)
862 case OpCode_BlueValues:
863 case OpCode_OtherBlues:
864 case OpCode_FamilyBlues:
865 case OpCode_FamilyOtherBlues:
866 case OpCode_StemSnapH:
867 case OpCode_StemSnapV:
872 case OpCode_BlueScale:
873 case OpCode_BlueShift:
874 case OpCode_BlueFuzz:
875 case OpCode_ForceBold:
876 case OpCode_LanguageGroup:
877 case OpCode_ExpansionFactor:
878 case OpCode_initialRandomSeed:
879 case OpCode_defaultWidthX:
880 case OpCode_nominalWidthX:
881 val.single_val = env.argStack.pop_num ();
885 dictval.subrsOffset = env.argStack.pop_uint ();
890 dict_opset_t::process_op (op, env);
891 if (!env.argStack.is_empty ()) return;
895 if (unlikely (env.in_error ())) return;
897 dictval.add_op (op, env.str_ref, val);
901 struct cff1_private_dict_opset_subset : dict_opset_t
903 static void process_op (op_code_t op, num_interp_env_t& env, cff1_private_dict_values_subset_t& dictval)
906 case OpCode_BlueValues:
907 case OpCode_OtherBlues:
908 case OpCode_FamilyBlues:
909 case OpCode_FamilyOtherBlues:
910 case OpCode_StemSnapH:
911 case OpCode_StemSnapV:
914 case OpCode_BlueScale:
915 case OpCode_BlueShift:
916 case OpCode_BlueFuzz:
917 case OpCode_ForceBold:
918 case OpCode_LanguageGroup:
919 case OpCode_ExpansionFactor:
920 case OpCode_initialRandomSeed:
921 case OpCode_defaultWidthX:
922 case OpCode_nominalWidthX:
927 dictval.subrsOffset = env.argStack.pop_uint ();
932 dict_opset_t::process_op (op, env);
933 if (!env.argStack.is_empty ()) return;
937 if (unlikely (env.in_error ())) return;
939 dictval.add_op (op, env.str_ref);
943 typedef dict_interpreter_t<cff1_top_dict_opset_t, cff1_top_dict_values_t, cff1_top_dict_interp_env_t> cff1_top_dict_interpreter_t;
944 typedef dict_interpreter_t<cff1_font_dict_opset_t, cff1_font_dict_values_t> cff1_font_dict_interpreter_t;
946 typedef CFF1Index CFF1NameIndex;
947 typedef CFF1IndexOf<TopDict> CFF1TopDictIndex;
949 struct cff1_font_dict_values_mod_t
951 cff1_font_dict_values_mod_t() { init (); }
953 void init () { init ( &Null (cff1_font_dict_values_t), CFF_UNDEF_SID ); }
955 void init (const cff1_font_dict_values_t *base_,
956 unsigned int fontName_)
959 fontName = fontName_;
960 privateDictInfo.init ();
963 unsigned get_count () const { return base->get_count (); }
965 const op_str_t &operator [] (unsigned int i) const { return (*base)[i]; }
967 const cff1_font_dict_values_t *base;
968 table_info_t privateDictInfo;
969 unsigned int fontName;
972 struct CFF1FDArray : FDArray<HBUINT16>
974 /* FDArray::serialize() requires this partial specialization to compile */
975 template <typename ITER, typename OP_SERIALIZER>
976 bool serialize (hb_serialize_context_t *c, ITER it, OP_SERIALIZER& opszr)
977 { return FDArray<HBUINT16>::serialize<cff1_font_dict_values_mod_t, cff1_font_dict_values_mod_t> (c, it, opszr); }
980 } /* namespace CFF */
988 static constexpr hb_tag_t tableTag = HB_OT_TAG_cff1;
990 bool sanitize (hb_sanitize_context_t *c) const
992 TRACE_SANITIZE (this);
993 return_trace (c->check_struct (this) &&
994 likely (version.major == 1));
997 template <typename PRIVOPSET, typename PRIVDICTVAL>
998 struct accelerator_templ_t
1000 void init (hb_face_t *face)
1004 privateDicts.init ();
1006 this->blob = sc.reference_table<cff1> (face);
1008 /* setup for run-time santization */
1009 sc.init (this->blob);
1010 sc.start_processing ();
1012 const OT::cff1 *cff = this->blob->template as<OT::cff1> ();
1014 if (cff == &Null (OT::cff1))
1015 { fini (); return; }
1017 nameIndex = &cff->nameIndex (cff);
1018 if ((nameIndex == &Null (CFF1NameIndex)) || !nameIndex->sanitize (&sc))
1019 { fini (); return; }
1021 topDictIndex = &StructAtOffset<CFF1TopDictIndex> (nameIndex, nameIndex->get_size ());
1022 if ((topDictIndex == &Null (CFF1TopDictIndex)) || !topDictIndex->sanitize (&sc) || (topDictIndex->count == 0))
1023 { fini (); return; }
1025 { /* parse top dict */
1026 const byte_str_t topDictStr = (*topDictIndex)[0];
1027 if (unlikely (!topDictStr.sanitize (&sc))) { fini (); return; }
1028 cff1_top_dict_interpreter_t top_interp;
1029 top_interp.env.init (topDictStr);
1031 if (unlikely (!top_interp.interpret (topDict))) { fini (); return; }
1034 if (is_predef_charset ())
1035 charset = &Null (Charset);
1038 charset = &StructAtOffsetOrNull<Charset> (cff, topDict.CharsetOffset);
1039 if (unlikely ((charset == &Null (Charset)) || !charset->sanitize (&sc))) { fini (); return; }
1045 fdArray = &StructAtOffsetOrNull<CFF1FDArray> (cff, topDict.FDArrayOffset);
1046 fdSelect = &StructAtOffsetOrNull<CFF1FDSelect> (cff, topDict.FDSelectOffset);
1047 if (unlikely ((fdArray == &Null (CFF1FDArray)) || !fdArray->sanitize (&sc) ||
1048 (fdSelect == &Null (CFF1FDSelect)) || !fdSelect->sanitize (&sc, fdArray->count)))
1049 { fini (); return; }
1051 fdCount = fdArray->count;
1055 fdArray = &Null (CFF1FDArray);
1056 fdSelect = &Null (CFF1FDSelect);
1059 encoding = &Null (Encoding);
1062 if (unlikely (charset == &Null (Charset))) { fini (); return; }
1066 if (!is_predef_encoding ())
1068 encoding = &StructAtOffsetOrNull<Encoding> (cff, topDict.EncodingOffset);
1069 if (unlikely ((encoding == &Null (Encoding)) || !encoding->sanitize (&sc))) { fini (); return; }
1073 stringIndex = &StructAtOffset<CFF1StringIndex> (topDictIndex, topDictIndex->get_size ());
1074 if ((stringIndex == &Null (CFF1StringIndex)) || !stringIndex->sanitize (&sc))
1075 { fini (); return; }
1077 globalSubrs = &StructAtOffset<CFF1Subrs> (stringIndex, stringIndex->get_size ());
1078 if ((globalSubrs != &Null (CFF1Subrs)) && !globalSubrs->sanitize (&sc))
1079 { fini (); return; }
1081 charStrings = &StructAtOffsetOrNull<CFF1CharStrings> (cff, topDict.charStringsOffset);
1083 if ((charStrings == &Null (CFF1CharStrings)) || unlikely (!charStrings->sanitize (&sc)))
1084 { fini (); return; }
1086 num_glyphs = charStrings->count;
1087 if (num_glyphs != sc.get_num_glyphs ())
1088 { fini (); return; }
1090 privateDicts.resize (fdCount);
1091 for (unsigned int i = 0; i < fdCount; i++)
1092 privateDicts[i].init ();
1094 // parse CID font dicts and gather private dicts
1097 for (unsigned int i = 0; i < fdCount; i++)
1099 byte_str_t fontDictStr = (*fdArray)[i];
1100 if (unlikely (!fontDictStr.sanitize (&sc))) { fini (); return; }
1101 cff1_font_dict_values_t *font;
1102 cff1_font_dict_interpreter_t font_interp;
1103 font_interp.env.init (fontDictStr);
1104 font = fontDicts.push ();
1105 if (unlikely (font == &Crap (cff1_font_dict_values_t))) { fini (); return; }
1107 if (unlikely (!font_interp.interpret (*font))) { fini (); return; }
1108 PRIVDICTVAL *priv = &privateDicts[i];
1109 const byte_str_t privDictStr (StructAtOffset<UnsizedByteStr> (cff, font->privateDictInfo.offset), font->privateDictInfo.size);
1110 if (unlikely (!privDictStr.sanitize (&sc))) { fini (); return; }
1111 dict_interpreter_t<PRIVOPSET, PRIVDICTVAL> priv_interp;
1112 priv_interp.env.init (privDictStr);
1114 if (unlikely (!priv_interp.interpret (*priv))) { fini (); return; }
1116 priv->localSubrs = &StructAtOffsetOrNull<CFF1Subrs> (&privDictStr, priv->subrsOffset);
1117 if (priv->localSubrs != &Null (CFF1Subrs) &&
1118 unlikely (!priv->localSubrs->sanitize (&sc)))
1119 { fini (); return; }
1124 cff1_top_dict_values_t *font = &topDict;
1125 PRIVDICTVAL *priv = &privateDicts[0];
1127 const byte_str_t privDictStr (StructAtOffset<UnsizedByteStr> (cff, font->privateDictInfo.offset), font->privateDictInfo.size);
1128 if (unlikely (!privDictStr.sanitize (&sc))) { fini (); return; }
1129 dict_interpreter_t<PRIVOPSET, PRIVDICTVAL> priv_interp;
1130 priv_interp.env.init (privDictStr);
1132 if (unlikely (!priv_interp.interpret (*priv))) { fini (); return; }
1134 priv->localSubrs = &StructAtOffsetOrNull<CFF1Subrs> (&privDictStr, priv->subrsOffset);
1135 if (priv->localSubrs != &Null (CFF1Subrs) &&
1136 unlikely (!priv->localSubrs->sanitize (&sc)))
1137 { fini (); return; }
1143 sc.end_processing ();
1145 fontDicts.fini_deep ();
1146 privateDicts.fini_deep ();
1147 hb_blob_destroy (blob);
1151 bool is_valid () const { return blob; }
1152 bool is_CID () const { return topDict.is_CID (); }
1154 bool is_predef_charset () const { return topDict.CharsetOffset <= ExpertSubsetCharset; }
1156 unsigned int std_code_to_glyph (hb_codepoint_t code) const
1158 hb_codepoint_t sid = lookup_standard_encoding_for_sid (code);
1159 if (unlikely (sid == CFF_UNDEF_SID))
1162 if (charset != &Null (Charset))
1163 return charset->get_glyph (sid, num_glyphs);
1164 else if ((topDict.CharsetOffset == ISOAdobeCharset)
1165 && (code <= 228 /*zcaron*/)) return sid;
1169 bool is_predef_encoding () const { return topDict.EncodingOffset <= ExpertEncoding; }
1171 hb_codepoint_t glyph_to_code (hb_codepoint_t glyph) const
1173 if (encoding != &Null (Encoding))
1174 return encoding->get_code (glyph);
1177 hb_codepoint_t sid = glyph_to_sid (glyph);
1178 if (sid == 0) return 0;
1179 hb_codepoint_t code = 0;
1180 switch (topDict.EncodingOffset)
1182 case StandardEncoding:
1183 code = lookup_standard_encoding_for_code (sid);
1185 case ExpertEncoding:
1186 code = lookup_expert_encoding_for_code (sid);
1195 hb_codepoint_t glyph_to_sid (hb_codepoint_t glyph) const
1197 if (charset != &Null (Charset))
1198 return charset->get_sid (glyph, num_glyphs);
1201 hb_codepoint_t sid = 0;
1202 switch (topDict.CharsetOffset)
1204 case ISOAdobeCharset:
1205 if (glyph <= 228 /*zcaron*/) sid = glyph;
1208 sid = lookup_expert_charset_for_sid (glyph);
1210 case ExpertSubsetCharset:
1211 sid = lookup_expert_subset_charset_for_sid (glyph);
1220 hb_codepoint_t sid_to_glyph (hb_codepoint_t sid) const
1222 if (charset != &Null (Charset))
1223 return charset->get_glyph (sid, num_glyphs);
1226 hb_codepoint_t glyph = 0;
1227 switch (topDict.CharsetOffset)
1229 case ISOAdobeCharset:
1230 if (sid <= 228 /*zcaron*/) glyph = sid;
1233 glyph = lookup_expert_charset_for_glyph (sid);
1235 case ExpertSubsetCharset:
1236 glyph = lookup_expert_subset_charset_for_glyph (sid);
1247 hb_sanitize_context_t sc;
1250 const Encoding *encoding;
1251 const Charset *charset;
1252 const CFF1NameIndex *nameIndex;
1253 const CFF1TopDictIndex *topDictIndex;
1254 const CFF1StringIndex *stringIndex;
1255 const CFF1Subrs *globalSubrs;
1256 const CFF1CharStrings *charStrings;
1257 const CFF1FDArray *fdArray;
1258 const CFF1FDSelect *fdSelect;
1259 unsigned int fdCount;
1261 cff1_top_dict_values_t topDict;
1262 hb_vector_t<cff1_font_dict_values_t>
1264 hb_vector_t<PRIVDICTVAL> privateDicts;
1266 unsigned int num_glyphs;
1269 struct accelerator_t : accelerator_templ_t<cff1_private_dict_opset_t, cff1_private_dict_values_t>
1271 void init (hb_face_t *face)
1275 if (!is_valid ()) return;
1276 if (is_CID ()) return;
1278 /* fill glyph_names */
1279 for (hb_codepoint_t gid = 0; gid < num_glyphs; gid++)
1281 hb_codepoint_t sid = glyph_to_sid (gid);
1284 if (sid < cff1_std_strings_length)
1285 gname.name = cff1_std_strings (sid);
1288 byte_str_t ustr = (*stringIndex)[sid - cff1_std_strings_length];
1289 gname.name = hb_bytes_t ((const char*)ustr.arrayZ, ustr.length);
1291 if (unlikely (!gname.name.arrayZ)) { fini (); return; }
1292 glyph_names.push (gname);
1294 glyph_names.qsort ();
1299 glyph_names.fini ();
1304 bool get_glyph_name (hb_codepoint_t glyph,
1305 char *buf, unsigned int buf_len) const
1307 if (!buf) return true;
1308 if (unlikely (!is_valid ())) return false;
1309 if (is_CID()) return false;
1310 hb_codepoint_t sid = glyph_to_sid (glyph);
1313 if (sid < cff1_std_strings_length)
1315 hb_bytes_t byte_str = cff1_std_strings (sid);
1316 str = byte_str.arrayZ;
1317 str_len = byte_str.length;
1321 byte_str_t ubyte_str = (*stringIndex)[sid - cff1_std_strings_length];
1322 str = (const char *)ubyte_str.arrayZ;
1323 str_len = ubyte_str.length;
1325 if (!str_len) return false;
1326 unsigned int len = hb_min (buf_len - 1, str_len);
1327 strncpy (buf, (const char*)str, len);
1332 bool get_glyph_from_name (const char *name, int len,
1333 hb_codepoint_t *glyph) const
1335 if (len < 0) len = strlen (name);
1336 if (unlikely (!len)) return false;
1338 gname_t key = { hb_bytes_t (name, len), 0 };
1339 const gname_t *gname = glyph_names.bsearch (key);
1340 if (!gname) return false;
1341 hb_codepoint_t gid = sid_to_glyph (gname->sid);
1342 if (!gid && gname->sid) return false;
1347 HB_INTERNAL bool get_extents (hb_font_t *font, hb_codepoint_t glyph, hb_glyph_extents_t *extents) const;
1348 HB_INTERNAL bool get_seac_components (hb_codepoint_t glyph, hb_codepoint_t *base, hb_codepoint_t *accent) const;
1349 #ifdef HB_EXPERIMENTAL_API
1350 HB_INTERNAL bool get_path (hb_font_t *font, hb_codepoint_t glyph, draw_helper_t &draw_helper) const;
1359 static int cmp (const void *a_, const void *b_)
1361 const gname_t *a = (const gname_t *)a_;
1362 const gname_t *b = (const gname_t *)b_;
1363 int minlen = hb_min (a->name.length, b->name.length);
1364 int ret = strncmp (a->name.arrayZ, b->name.arrayZ, minlen);
1365 if (ret) return ret;
1366 return a->name.length - b->name.length;
1369 int cmp (const gname_t &a) const { return cmp (&a, this); }
1372 hb_sorted_vector_t<gname_t> glyph_names;
1374 typedef accelerator_templ_t<cff1_private_dict_opset_t, cff1_private_dict_values_t> SUPER;
1377 struct accelerator_subset_t : accelerator_templ_t<cff1_private_dict_opset_subset, cff1_private_dict_values_subset_t> {};
1379 bool subset (hb_subset_context_t *c) const { return hb_subset_cff1 (c); }
1382 HB_INTERNAL static hb_codepoint_t lookup_standard_encoding_for_code (hb_codepoint_t sid);
1383 HB_INTERNAL static hb_codepoint_t lookup_expert_encoding_for_code (hb_codepoint_t sid);
1384 HB_INTERNAL static hb_codepoint_t lookup_expert_charset_for_sid (hb_codepoint_t glyph);
1385 HB_INTERNAL static hb_codepoint_t lookup_expert_subset_charset_for_sid (hb_codepoint_t glyph);
1386 HB_INTERNAL static hb_codepoint_t lookup_expert_charset_for_glyph (hb_codepoint_t sid);
1387 HB_INTERNAL static hb_codepoint_t lookup_expert_subset_charset_for_glyph (hb_codepoint_t sid);
1388 HB_INTERNAL static hb_codepoint_t lookup_standard_encoding_for_sid (hb_codepoint_t code);
1391 FixedVersion<HBUINT8> version; /* Version of CFF table. set to 0x0100u */
1392 OffsetTo<CFF1NameIndex, HBUINT8> nameIndex; /* headerSize = Offset to Name INDEX. */
1393 HBUINT8 offSize; /* offset size (unused?) */
1396 DEFINE_SIZE_STATIC (4);
1399 struct cff1_accelerator_t : cff1::accelerator_t {};
1400 } /* namespace OT */
1402 #endif /* HB_OT_CFF1_TABLE_HH */