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1 /* | 1 /* |
2 * Copyright © 2007,2008,2009 Red Hat, Inc. | 2 * Copyright © 2007,2008,2009 Red Hat, Inc. |
3 * Copyright © 2012 Google, Inc. | 3 * Copyright © 2012 Google, Inc. |
4 * | 4 * |
5 * This is part of HarfBuzz, a text shaping library. | 5 * This is part of HarfBuzz, a text shaping library. |
6 * | 6 * |
7 * Permission is hereby granted, without written agreement and without | 7 * Permission is hereby granted, without written agreement and without |
8 * license or royalty fees, to use, copy, modify, and distribute this | 8 * license or royalty fees, to use, copy, modify, and distribute this |
9 * software and its documentation for any purpose, provided that the | 9 * software and its documentation for any purpose, provided that the |
10 * above copyright notice and the following two paragraphs appear in | 10 * above copyright notice and the following two paragraphs appear in |
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49 struct OpenTypeFontFile; | 49 struct OpenTypeFontFile; |
50 struct OffsetTable; | 50 struct OffsetTable; |
51 struct TTCHeader; | 51 struct TTCHeader; |
52 | 52 |
53 | 53 |
54 typedef struct TableRecord | 54 typedef struct TableRecord |
55 { | 55 { |
56 inline bool sanitize (hb_sanitize_context_t *c) const | 56 inline bool sanitize (hb_sanitize_context_t *c) const |
57 { | 57 { |
58 TRACE_SANITIZE (this); | 58 TRACE_SANITIZE (this); |
59 return TRACE_RETURN (c->check_struct (this)); | 59 return_trace (c->check_struct (this)); |
60 } | 60 } |
61 | 61 |
62 Tag tag; /* 4-byte identifier. */ | 62 Tag tag; /* 4-byte identifier. */ |
63 CheckSum checkSum; /* CheckSum for this table. */ | 63 CheckSum checkSum; /* CheckSum for this table. */ |
64 ULONG offset; /* Offset from beginning of TrueType font | 64 ULONG offset; /* Offset from beginning of TrueType font |
65 * file. */ | 65 * file. */ |
66 ULONG length; /* Length of this table. */ | 66 ULONG length; /* Length of this table. */ |
67 public: | 67 public: |
68 DEFINE_SIZE_STATIC (16); | 68 DEFINE_SIZE_STATIC (16); |
69 } OpenTypeTable; | 69 } OpenTypeTable; |
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99 { | 99 { |
100 unsigned int table_index; | 100 unsigned int table_index; |
101 find_table_index (tag, &table_index); | 101 find_table_index (tag, &table_index); |
102 return get_table (table_index); | 102 return get_table (table_index); |
103 } | 103 } |
104 | 104 |
105 public: | 105 public: |
106 inline bool sanitize (hb_sanitize_context_t *c) const | 106 inline bool sanitize (hb_sanitize_context_t *c) const |
107 { | 107 { |
108 TRACE_SANITIZE (this); | 108 TRACE_SANITIZE (this); |
109 return TRACE_RETURN (c->check_struct (this) && c->check_array (tables, Table
Record::static_size, numTables)); | 109 return_trace (c->check_struct (this) && c->check_array (tables, TableRecord:
:static_size, numTables)); |
110 } | 110 } |
111 | 111 |
112 protected: | 112 protected: |
113 Tag sfnt_version; /* '\0\001\0\00' if TrueType / 'OTTO' if CFF */ | 113 Tag sfnt_version; /* '\0\001\0\00' if TrueType / 'OTTO' if CFF */ |
114 USHORT numTables; /* Number of tables. */ | 114 USHORT numTables; /* Number of tables. */ |
115 USHORT searchRangeZ; /* (Maximum power of 2 <= numTables) x 16 */ | 115 USHORT searchRangeZ; /* (Maximum power of 2 <= numTables) x 16 */ |
116 USHORT entrySelectorZ; /* Log2(maximum power of 2 <= numTables). */ | 116 USHORT entrySelectorZ; /* Log2(maximum power of 2 <= numTables). */ |
117 USHORT rangeShiftZ; /* NumTables x 16-searchRange. */ | 117 USHORT rangeShiftZ; /* NumTables x 16-searchRange. */ |
118 TableRecord tables[VAR]; /* TableRecord entries. numTables items */ | 118 TableRecord tables[VAR]; /* TableRecord entries. numTables items */ |
119 public: | 119 public: |
120 DEFINE_SIZE_ARRAY (12, tables); | 120 DEFINE_SIZE_ARRAY (12, tables); |
121 } OpenTypeFontFace; | 121 } OpenTypeFontFace; |
122 | 122 |
123 | 123 |
124 /* | 124 /* |
125 * TrueType Collections | 125 * TrueType Collections |
126 */ | 126 */ |
127 | 127 |
128 struct TTCHeaderVersion1 | 128 struct TTCHeaderVersion1 |
129 { | 129 { |
130 friend struct TTCHeader; | 130 friend struct TTCHeader; |
131 | 131 |
132 inline unsigned int get_face_count (void) const { return table.len; } | 132 inline unsigned int get_face_count (void) const { return table.len; } |
133 inline const OpenTypeFontFace& get_face (unsigned int i) const { return this+t
able[i]; } | 133 inline const OpenTypeFontFace& get_face (unsigned int i) const { return this+t
able[i]; } |
134 | 134 |
135 inline bool sanitize (hb_sanitize_context_t *c) const | 135 inline bool sanitize (hb_sanitize_context_t *c) const |
136 { | 136 { |
137 TRACE_SANITIZE (this); | 137 TRACE_SANITIZE (this); |
138 return TRACE_RETURN (table.sanitize (c, this)); | 138 return_trace (table.sanitize (c, this)); |
139 } | 139 } |
140 | 140 |
141 protected: | 141 protected: |
142 Tag ttcTag; /* TrueType Collection ID string: 'ttcf' */ | 142 Tag ttcTag; /* TrueType Collection ID string: 'ttcf' */ |
143 FixedVersion version; /* Version of the TTC Header (1.0), | 143 FixedVersion version; /* Version of the TTC Header (1.0), |
144 * 0x00010000u */ | 144 * 0x00010000u */ |
145 ArrayOf<OffsetTo<OffsetTable, ULONG>, ULONG> | 145 ArrayOf<OffsetTo<OffsetTable, ULONG>, ULONG> |
146 table; /* Array of offsets to the OffsetTable for each
font | 146 table; /* Array of offsets to the OffsetTable for each
font |
147 * from the beginning of the file */ | 147 * from the beginning of the file */ |
148 public: | 148 public: |
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168 switch (u.header.version.major) { | 168 switch (u.header.version.major) { |
169 case 2: /* version 2 is compatible with version 1 */ | 169 case 2: /* version 2 is compatible with version 1 */ |
170 case 1: return u.version1.get_face (i); | 170 case 1: return u.version1.get_face (i); |
171 default:return Null(OpenTypeFontFace); | 171 default:return Null(OpenTypeFontFace); |
172 } | 172 } |
173 } | 173 } |
174 | 174 |
175 inline bool sanitize (hb_sanitize_context_t *c) const | 175 inline bool sanitize (hb_sanitize_context_t *c) const |
176 { | 176 { |
177 TRACE_SANITIZE (this); | 177 TRACE_SANITIZE (this); |
178 if (unlikely (!u.header.version.sanitize (c))) return TRACE_RETURN (false); | 178 if (unlikely (!u.header.version.sanitize (c))) return_trace (false); |
179 switch (u.header.version.major) { | 179 switch (u.header.version.major) { |
180 case 2: /* version 2 is compatible with version 1 */ | 180 case 2: /* version 2 is compatible with version 1 */ |
181 case 1: return TRACE_RETURN (u.version1.sanitize (c)); | 181 case 1: return_trace (u.version1.sanitize (c)); |
182 default:return TRACE_RETURN (true); | 182 default:return_trace (true); |
183 } | 183 } |
184 } | 184 } |
185 | 185 |
186 protected: | 186 protected: |
187 union { | 187 union { |
188 struct { | 188 struct { |
189 Tag ttcTag; /* TrueType Collection ID string: 'ttcf' */ | 189 Tag ttcTag; /* TrueType Collection ID string: 'ttcf' */ |
190 FixedVersion version; /* Version of the TTC Header (1.0 or 2.0), | 190 FixedVersion version; /* Version of the TTC Header (1.0 or 2.0), |
191 * 0x00010000u or 0x00020000u */ | 191 * 0x00010000u or 0x00020000u */ |
192 } header; | 192 } header; |
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233 case Typ1Tag: | 233 case Typ1Tag: |
234 case TrueTypeTag: return u.fontFace; | 234 case TrueTypeTag: return u.fontFace; |
235 case TTCTag: return u.ttcHeader.get_face (i); | 235 case TTCTag: return u.ttcHeader.get_face (i); |
236 default: return Null(OpenTypeFontFace); | 236 default: return Null(OpenTypeFontFace); |
237 } | 237 } |
238 } | 238 } |
239 | 239 |
240 inline bool sanitize (hb_sanitize_context_t *c) const | 240 inline bool sanitize (hb_sanitize_context_t *c) const |
241 { | 241 { |
242 TRACE_SANITIZE (this); | 242 TRACE_SANITIZE (this); |
243 if (unlikely (!u.tag.sanitize (c))) return TRACE_RETURN (false); | 243 if (unlikely (!u.tag.sanitize (c))) return_trace (false); |
244 switch (u.tag) { | 244 switch (u.tag) { |
245 case CFFTag: /* All the non-collection tags */ | 245 case CFFTag: /* All the non-collection tags */ |
246 case TrueTag: | 246 case TrueTag: |
247 case Typ1Tag: | 247 case Typ1Tag: |
248 case TrueTypeTag:» return TRACE_RETURN (u.fontFace.sanitize (c)); | 248 case TrueTypeTag:» return_trace (u.fontFace.sanitize (c)); |
249 case TTCTag:» return TRACE_RETURN (u.ttcHeader.sanitize (c)); | 249 case TTCTag:» return_trace (u.ttcHeader.sanitize (c)); |
250 default:» » return TRACE_RETURN (true); | 250 default:» » return_trace (true); |
251 } | 251 } |
252 } | 252 } |
253 | 253 |
254 protected: | 254 protected: |
255 union { | 255 union { |
256 Tag tag; /* 4-byte identifier. */ | 256 Tag tag; /* 4-byte identifier. */ |
257 OpenTypeFontFace fontFace; | 257 OpenTypeFontFace fontFace; |
258 TTCHeader ttcHeader; | 258 TTCHeader ttcHeader; |
259 } u; | 259 } u; |
260 public: | 260 public: |
261 DEFINE_SIZE_UNION (4, tag); | 261 DEFINE_SIZE_UNION (4, tag); |
262 }; | 262 }; |
263 | 263 |
264 | 264 |
265 } /* namespace OT */ | 265 } /* namespace OT */ |
266 | 266 |
267 | 267 |
268 #endif /* HB_OPEN_FILE_PRIVATE_HH */ | 268 #endif /* HB_OPEN_FILE_PRIVATE_HH */ |
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