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5172
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1 |
/***************************************************************************/
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/* */
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3 |
/* cffload.c */
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4 |
/* */
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5 |
/* OpenType and CFF data/program tables loader (body). */
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6 |
/* */
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7 |
/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, */
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8 |
/* 2010 by */
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9 |
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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10 |
/* */
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11 |
/* This file is part of the FreeType project, and may only be used, */
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/* modified, and distributed under the terms of the FreeType project */
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13 |
/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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16 |
/* */
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17 |
/***************************************************************************/
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20 |
#include <ft2build.h>
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21 |
#include FT_INTERNAL_DEBUG_H
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22 |
#include FT_INTERNAL_OBJECTS_H
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23 |
#include FT_INTERNAL_STREAM_H
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24 |
#include FT_TRUETYPE_TAGS_H
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25 |
#include FT_TYPE1_TABLES_H
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26 |
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27 |
#include "cffload.h"
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28 |
#include "cffparse.h"
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29 |
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30 |
#include "cfferrs.h"
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31 |
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32 |
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33 |
#if 1
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34 |
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35 |
static const FT_UShort cff_isoadobe_charset[229] =
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36 |
{
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37 |
0, 1, 2, 3, 4, 5, 6, 7,
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38 |
8, 9, 10, 11, 12, 13, 14, 15,
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39 |
16, 17, 18, 19, 20, 21, 22, 23,
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40 |
24, 25, 26, 27, 28, 29, 30, 31,
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41 |
32, 33, 34, 35, 36, 37, 38, 39,
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42 |
40, 41, 42, 43, 44, 45, 46, 47,
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43 |
48, 49, 50, 51, 52, 53, 54, 55,
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44 |
56, 57, 58, 59, 60, 61, 62, 63,
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45 |
64, 65, 66, 67, 68, 69, 70, 71,
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46 |
72, 73, 74, 75, 76, 77, 78, 79,
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47 |
80, 81, 82, 83, 84, 85, 86, 87,
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48 |
88, 89, 90, 91, 92, 93, 94, 95,
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49 |
96, 97, 98, 99, 100, 101, 102, 103,
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50 |
104, 105, 106, 107, 108, 109, 110, 111,
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51 |
112, 113, 114, 115, 116, 117, 118, 119,
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52 |
120, 121, 122, 123, 124, 125, 126, 127,
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53 |
128, 129, 130, 131, 132, 133, 134, 135,
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54 |
136, 137, 138, 139, 140, 141, 142, 143,
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55 |
144, 145, 146, 147, 148, 149, 150, 151,
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56 |
152, 153, 154, 155, 156, 157, 158, 159,
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57 |
160, 161, 162, 163, 164, 165, 166, 167,
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58 |
168, 169, 170, 171, 172, 173, 174, 175,
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59 |
176, 177, 178, 179, 180, 181, 182, 183,
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60 |
184, 185, 186, 187, 188, 189, 190, 191,
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61 |
192, 193, 194, 195, 196, 197, 198, 199,
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62 |
200, 201, 202, 203, 204, 205, 206, 207,
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63 |
208, 209, 210, 211, 212, 213, 214, 215,
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64 |
216, 217, 218, 219, 220, 221, 222, 223,
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65 |
224, 225, 226, 227, 228
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66 |
};
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67 |
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68 |
static const FT_UShort cff_expert_charset[166] =
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69 |
{
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70 |
0, 1, 229, 230, 231, 232, 233, 234,
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71 |
235, 236, 237, 238, 13, 14, 15, 99,
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72 |
239, 240, 241, 242, 243, 244, 245, 246,
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73 |
247, 248, 27, 28, 249, 250, 251, 252,
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74 |
253, 254, 255, 256, 257, 258, 259, 260,
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75 |
261, 262, 263, 264, 265, 266, 109, 110,
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76 |
267, 268, 269, 270, 271, 272, 273, 274,
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77 |
275, 276, 277, 278, 279, 280, 281, 282,
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78 |
283, 284, 285, 286, 287, 288, 289, 290,
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79 |
291, 292, 293, 294, 295, 296, 297, 298,
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80 |
299, 300, 301, 302, 303, 304, 305, 306,
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81 |
307, 308, 309, 310, 311, 312, 313, 314,
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82 |
315, 316, 317, 318, 158, 155, 163, 319,
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83 |
320, 321, 322, 323, 324, 325, 326, 150,
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84 |
164, 169, 327, 328, 329, 330, 331, 332,
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85 |
333, 334, 335, 336, 337, 338, 339, 340,
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86 |
341, 342, 343, 344, 345, 346, 347, 348,
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87 |
349, 350, 351, 352, 353, 354, 355, 356,
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88 |
357, 358, 359, 360, 361, 362, 363, 364,
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89 |
365, 366, 367, 368, 369, 370, 371, 372,
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90 |
373, 374, 375, 376, 377, 378
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91 |
};
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92 |
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93 |
static const FT_UShort cff_expertsubset_charset[87] =
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94 |
{
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95 |
0, 1, 231, 232, 235, 236, 237, 238,
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96 |
13, 14, 15, 99, 239, 240, 241, 242,
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97 |
243, 244, 245, 246, 247, 248, 27, 28,
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98 |
249, 250, 251, 253, 254, 255, 256, 257,
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99 |
258, 259, 260, 261, 262, 263, 264, 265,
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100 |
266, 109, 110, 267, 268, 269, 270, 272,
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101 |
300, 301, 302, 305, 314, 315, 158, 155,
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102 |
163, 320, 321, 322, 323, 324, 325, 326,
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103 |
150, 164, 169, 327, 328, 329, 330, 331,
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104 |
332, 333, 334, 335, 336, 337, 338, 339,
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105 |
340, 341, 342, 343, 344, 345, 346
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106 |
};
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107 |
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108 |
static const FT_UShort cff_standard_encoding[256] =
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109 |
{
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110 |
0, 0, 0, 0, 0, 0, 0, 0,
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111 |
0, 0, 0, 0, 0, 0, 0, 0,
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112 |
0, 0, 0, 0, 0, 0, 0, 0,
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113 |
0, 0, 0, 0, 0, 0, 0, 0,
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114 |
1, 2, 3, 4, 5, 6, 7, 8,
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115 |
9, 10, 11, 12, 13, 14, 15, 16,
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116 |
17, 18, 19, 20, 21, 22, 23, 24,
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117 |
25, 26, 27, 28, 29, 30, 31, 32,
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118 |
33, 34, 35, 36, 37, 38, 39, 40,
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119 |
41, 42, 43, 44, 45, 46, 47, 48,
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120 |
49, 50, 51, 52, 53, 54, 55, 56,
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121 |
57, 58, 59, 60, 61, 62, 63, 64,
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122 |
65, 66, 67, 68, 69, 70, 71, 72,
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123 |
73, 74, 75, 76, 77, 78, 79, 80,
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124 |
81, 82, 83, 84, 85, 86, 87, 88,
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125 |
89, 90, 91, 92, 93, 94, 95, 0,
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126 |
0, 0, 0, 0, 0, 0, 0, 0,
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127 |
0, 0, 0, 0, 0, 0, 0, 0,
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128 |
0, 0, 0, 0, 0, 0, 0, 0,
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129 |
0, 0, 0, 0, 0, 0, 0, 0,
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130 |
0, 96, 97, 98, 99, 100, 101, 102,
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131 |
103, 104, 105, 106, 107, 108, 109, 110,
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132 |
0, 111, 112, 113, 114, 0, 115, 116,
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133 |
117, 118, 119, 120, 121, 122, 0, 123,
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134 |
0, 124, 125, 126, 127, 128, 129, 130,
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135 |
131, 0, 132, 133, 0, 134, 135, 136,
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136 |
137, 0, 0, 0, 0, 0, 0, 0,
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137 |
0, 0, 0, 0, 0, 0, 0, 0,
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138 |
0, 138, 0, 139, 0, 0, 0, 0,
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139 |
140, 141, 142, 143, 0, 0, 0, 0,
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140 |
0, 144, 0, 0, 0, 145, 0, 0,
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141 |
146, 147, 148, 149, 0, 0, 0, 0
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142 |
};
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143 |
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144 |
static const FT_UShort cff_expert_encoding[256] =
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145 |
{
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146 |
0, 0, 0, 0, 0, 0, 0, 0,
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147 |
0, 0, 0, 0, 0, 0, 0, 0,
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148 |
0, 0, 0, 0, 0, 0, 0, 0,
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149 |
0, 0, 0, 0, 0, 0, 0, 0,
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150 |
1, 229, 230, 0, 231, 232, 233, 234,
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151 |
235, 236, 237, 238, 13, 14, 15, 99,
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152 |
239, 240, 241, 242, 243, 244, 245, 246,
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153 |
247, 248, 27, 28, 249, 250, 251, 252,
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154 |
0, 253, 254, 255, 256, 257, 0, 0,
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155 |
0, 258, 0, 0, 259, 260, 261, 262,
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156 |
0, 0, 263, 264, 265, 0, 266, 109,
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157 |
110, 267, 268, 269, 0, 270, 271, 272,
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158 |
273, 274, 275, 276, 277, 278, 279, 280,
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159 |
281, 282, 283, 284, 285, 286, 287, 288,
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160 |
289, 290, 291, 292, 293, 294, 295, 296,
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161 |
297, 298, 299, 300, 301, 302, 303, 0,
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162 |
0, 0, 0, 0, 0, 0, 0, 0,
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163 |
0, 0, 0, 0, 0, 0, 0, 0,
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164 |
0, 0, 0, 0, 0, 0, 0, 0,
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165 |
0, 0, 0, 0, 0, 0, 0, 0,
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166 |
0, 304, 305, 306, 0, 0, 307, 308,
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167 |
309, 310, 311, 0, 312, 0, 0, 312,
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168 |
0, 0, 314, 315, 0, 0, 316, 317,
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169 |
318, 0, 0, 0, 158, 155, 163, 319,
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170 |
320, 321, 322, 323, 324, 325, 0, 0,
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171 |
326, 150, 164, 169, 327, 328, 329, 330,
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172 |
331, 332, 333, 334, 335, 336, 337, 338,
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173 |
339, 340, 341, 342, 343, 344, 345, 346,
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174 |
347, 348, 349, 350, 351, 352, 353, 354,
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175 |
355, 356, 357, 358, 359, 360, 361, 362,
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176 |
363, 364, 365, 366, 367, 368, 369, 370,
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177 |
371, 372, 373, 374, 375, 376, 377, 378
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178 |
};
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179 |
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180 |
#endif /* 1 */
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181 |
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182 |
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183 |
FT_LOCAL_DEF( FT_UShort )
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184 |
cff_get_standard_encoding( FT_UInt charcode )
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185 |
{
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186 |
return (FT_UShort)( charcode < 256 ? cff_standard_encoding[charcode]
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187 |
: 0 );
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188 |
}
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189 |
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190 |
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191 |
/*************************************************************************/
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192 |
/* */
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193 |
/* The macro FT_COMPONENT is used in trace mode. It is an implicit */
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194 |
/* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
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195 |
/* messages during execution. */
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196 |
/* */
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197 |
#undef FT_COMPONENT
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|
198 |
#define FT_COMPONENT trace_cffload
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199 |
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200 |
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|
201 |
/* read an offset from the index's stream current position */
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202 |
static FT_ULong
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203 |
cff_index_read_offset( CFF_Index idx,
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|
204 |
FT_Error *errorp )
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|
205 |
{
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|
206 |
FT_Error error;
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|
207 |
FT_Stream stream = idx->stream;
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208 |
FT_Byte tmp[4];
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|
209 |
FT_ULong result = 0;
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|
210 |
|
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211 |
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|
212 |
if ( !FT_STREAM_READ( tmp, idx->off_size ) )
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|
213 |
{
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|
214 |
FT_Int nn;
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215 |
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|
216 |
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|
217 |
for ( nn = 0; nn < idx->off_size; nn++ )
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|
218 |
result = ( result << 8 ) | tmp[nn];
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|
219 |
}
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220 |
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|
221 |
*errorp = error;
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|
222 |
return result;
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|
223 |
}
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|
224 |
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|
225 |
|
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|
226 |
static FT_Error
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|
227 |
cff_index_init( CFF_Index idx,
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|
228 |
FT_Stream stream,
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|
229 |
FT_Bool load )
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|
230 |
{
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|
231 |
FT_Error error;
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|
232 |
FT_Memory memory = stream->memory;
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233 |
FT_UShort count;
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234 |
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235 |
|
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|
236 |
FT_MEM_ZERO( idx, sizeof ( *idx ) );
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237 |
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|
238 |
idx->stream = stream;
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|
239 |
idx->start = FT_STREAM_POS();
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|
240 |
if ( !FT_READ_USHORT( count ) &&
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241 |
count > 0 )
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|
242 |
{
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|
243 |
FT_Byte offsize;
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244 |
FT_ULong size;
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245 |
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246 |
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|
247 |
/* there is at least one element; read the offset size, */
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248 |
/* then access the offset table to compute the index's total size */
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|
249 |
if ( FT_READ_BYTE( offsize ) )
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250 |
goto Exit;
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251 |
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|
252 |
if ( offsize < 1 || offsize > 4 )
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|
253 |
{
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254 |
error = CFF_Err_Invalid_Table;
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|
255 |
goto Exit;
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256 |
}
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257 |
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|
258 |
idx->count = count;
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|
259 |
idx->off_size = offsize;
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|
260 |
size = (FT_ULong)( count + 1 ) * offsize;
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261 |
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|
262 |
idx->data_offset = idx->start + 3 + size;
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263 |
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|
264 |
if ( FT_STREAM_SKIP( size - offsize ) )
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|
265 |
goto Exit;
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|
266 |
|
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|
267 |
size = cff_index_read_offset( idx, &error );
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|
268 |
if ( error )
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|
269 |
goto Exit;
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|
270 |
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|
271 |
if ( size == 0 )
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|
272 |
{
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|
273 |
error = CFF_Err_Invalid_Table;
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|
274 |
goto Exit;
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|
275 |
}
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|
276 |
|
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|
277 |
idx->data_size = --size;
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|
278 |
|
|
|
279 |
if ( load )
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|
280 |
{
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|
281 |
/* load the data */
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|
282 |
if ( FT_FRAME_EXTRACT( size, idx->bytes ) )
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|
283 |
goto Exit;
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|
284 |
}
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|
285 |
else
|
|
|
286 |
{
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|
|
287 |
/* skip the data */
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|
288 |
if ( FT_STREAM_SKIP( size ) )
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|
289 |
goto Exit;
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|
290 |
}
|
|
|
291 |
}
|
|
|
292 |
|
|
|
293 |
Exit:
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|
294 |
if ( error )
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|
295 |
FT_FREE( idx->offsets );
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|
|
296 |
|
|
|
297 |
return error;
|
|
|
298 |
}
|
|
|
299 |
|
|
|
300 |
|
|
|
301 |
static void
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|
|
302 |
cff_index_done( CFF_Index idx )
|
|
|
303 |
{
|
|
|
304 |
if ( idx->stream )
|
|
|
305 |
{
|
|
|
306 |
FT_Stream stream = idx->stream;
|
|
|
307 |
FT_Memory memory = stream->memory;
|
|
|
308 |
|
|
|
309 |
|
|
|
310 |
if ( idx->bytes )
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|
311 |
FT_FRAME_RELEASE( idx->bytes );
|
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|
312 |
|
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|
313 |
FT_FREE( idx->offsets );
|
|
|
314 |
FT_MEM_ZERO( idx, sizeof ( *idx ) );
|
|
|
315 |
}
|
|
|
316 |
}
|
|
|
317 |
|
|
|
318 |
|
|
|
319 |
static FT_Error
|
|
|
320 |
cff_index_load_offsets( CFF_Index idx )
|
|
|
321 |
{
|
|
|
322 |
FT_Error error = CFF_Err_Ok;
|
|
|
323 |
FT_Stream stream = idx->stream;
|
|
|
324 |
FT_Memory memory = stream->memory;
|
|
|
325 |
|
|
|
326 |
|
|
|
327 |
if ( idx->count > 0 && idx->offsets == NULL )
|
|
|
328 |
{
|
|
|
329 |
FT_Byte offsize = idx->off_size;
|
|
|
330 |
FT_ULong data_size;
|
|
|
331 |
FT_Byte* p;
|
|
|
332 |
FT_Byte* p_end;
|
|
|
333 |
FT_ULong* poff;
|
|
|
334 |
|
|
|
335 |
|
|
|
336 |
data_size = (FT_ULong)( idx->count + 1 ) * offsize;
|
|
|
337 |
|
|
|
338 |
if ( FT_NEW_ARRAY( idx->offsets, idx->count + 1 ) ||
|
|
|
339 |
FT_STREAM_SEEK( idx->start + 3 ) ||
|
|
|
340 |
FT_FRAME_ENTER( data_size ) )
|
|
|
341 |
goto Exit;
|
|
|
342 |
|
|
|
343 |
poff = idx->offsets;
|
|
|
344 |
p = (FT_Byte*)stream->cursor;
|
|
|
345 |
p_end = p + data_size;
|
|
|
346 |
|
|
|
347 |
switch ( offsize )
|
|
|
348 |
{
|
|
|
349 |
case 1:
|
|
|
350 |
for ( ; p < p_end; p++, poff++ )
|
|
|
351 |
poff[0] = p[0];
|
|
|
352 |
break;
|
|
|
353 |
|
|
|
354 |
case 2:
|
|
|
355 |
for ( ; p < p_end; p += 2, poff++ )
|
|
|
356 |
poff[0] = FT_PEEK_USHORT( p );
|
|
|
357 |
break;
|
|
|
358 |
|
|
|
359 |
case 3:
|
|
|
360 |
for ( ; p < p_end; p += 3, poff++ )
|
|
|
361 |
poff[0] = FT_PEEK_OFF3( p );
|
|
|
362 |
break;
|
|
|
363 |
|
|
|
364 |
default:
|
|
|
365 |
for ( ; p < p_end; p += 4, poff++ )
|
|
|
366 |
poff[0] = FT_PEEK_ULONG( p );
|
|
|
367 |
}
|
|
|
368 |
|
|
|
369 |
FT_FRAME_EXIT();
|
|
|
370 |
}
|
|
|
371 |
|
|
|
372 |
Exit:
|
|
|
373 |
if ( error )
|
|
|
374 |
FT_FREE( idx->offsets );
|
|
|
375 |
|
|
|
376 |
return error;
|
|
|
377 |
}
|
|
|
378 |
|
|
|
379 |
|
|
|
380 |
/* Allocate a table containing pointers to an index's elements. */
|
|
|
381 |
/* The `pool' argument makes this function convert the index */
|
|
|
382 |
/* entries to C-style strings (this is, NULL-terminated). */
|
|
|
383 |
static FT_Error
|
|
|
384 |
cff_index_get_pointers( CFF_Index idx,
|
|
|
385 |
FT_Byte*** table,
|
|
|
386 |
FT_Byte** pool )
|
|
|
387 |
{
|
|
|
388 |
FT_Error error = CFF_Err_Ok;
|
|
|
389 |
FT_Memory memory = idx->stream->memory;
|
|
|
390 |
FT_Byte** t;
|
|
|
391 |
FT_Byte* new_bytes = NULL;
|
|
|
392 |
|
|
|
393 |
|
|
|
394 |
*table = NULL;
|
|
|
395 |
|
|
|
396 |
if ( idx->offsets == NULL )
|
|
|
397 |
{
|
|
|
398 |
error = cff_index_load_offsets( idx );
|
|
|
399 |
if ( error )
|
|
|
400 |
goto Exit;
|
|
|
401 |
}
|
|
|
402 |
|
|
|
403 |
if ( idx->count > 0 &&
|
|
|
404 |
!FT_NEW_ARRAY( t, idx->count + 1 ) &&
|
|
|
405 |
( !pool || !FT_ALLOC( new_bytes,
|
|
|
406 |
idx->data_size + idx->count ) ) )
|
|
|
407 |
{
|
|
|
408 |
FT_ULong n, cur_offset;
|
|
|
409 |
FT_ULong extra = 0;
|
|
|
410 |
FT_Byte* org_bytes = idx->bytes;
|
|
|
411 |
|
|
|
412 |
|
|
|
413 |
/* at this point, `idx->offsets' can't be NULL */
|
|
|
414 |
cur_offset = idx->offsets[0] - 1;
|
|
|
415 |
|
|
|
416 |
/* sanity check */
|
|
|
417 |
if ( cur_offset >= idx->data_size )
|
|
|
418 |
{
|
|
|
419 |
FT_TRACE0(( "cff_index_get_pointers:"
|
|
|
420 |
" invalid first offset value %d set to zero\n",
|
|
|
421 |
cur_offset ));
|
|
|
422 |
cur_offset = 0;
|
|
|
423 |
}
|
|
|
424 |
|
|
|
425 |
if ( !pool )
|
|
|
426 |
t[0] = org_bytes + cur_offset;
|
|
|
427 |
else
|
|
|
428 |
t[0] = new_bytes + cur_offset;
|
|
|
429 |
|
|
|
430 |
for ( n = 1; n <= idx->count; n++ )
|
|
|
431 |
{
|
|
|
432 |
FT_ULong next_offset = idx->offsets[n] - 1;
|
|
|
433 |
|
|
|
434 |
|
|
|
435 |
/* empty slot + two sanity checks for invalid offset tables */
|
|
|
436 |
if ( next_offset == 0 ||
|
|
|
437 |
next_offset < cur_offset ||
|
|
|
438 |
( next_offset >= idx->data_size && n < idx->count ) )
|
|
|
439 |
next_offset = cur_offset;
|
|
|
440 |
|
|
|
441 |
if ( !pool )
|
|
|
442 |
t[n] = org_bytes + next_offset;
|
|
|
443 |
else
|
|
|
444 |
{
|
|
|
445 |
t[n] = new_bytes + next_offset + extra;
|
|
|
446 |
|
|
|
447 |
if ( next_offset != cur_offset )
|
|
|
448 |
{
|
|
|
449 |
FT_MEM_COPY( t[n - 1], org_bytes + cur_offset, t[n] - t[n - 1] );
|
|
|
450 |
t[n][0] = '\0';
|
|
|
451 |
t[n] += 1;
|
|
|
452 |
extra++;
|
|
|
453 |
}
|
|
|
454 |
}
|
|
|
455 |
|
|
|
456 |
cur_offset = next_offset;
|
|
|
457 |
}
|
|
|
458 |
*table = t;
|
|
|
459 |
|
|
|
460 |
if ( pool )
|
|
|
461 |
*pool = new_bytes;
|
|
|
462 |
}
|
|
|
463 |
|
|
|
464 |
Exit:
|
|
|
465 |
return error;
|
|
|
466 |
}
|
|
|
467 |
|
|
|
468 |
|
|
|
469 |
FT_LOCAL_DEF( FT_Error )
|
|
|
470 |
cff_index_access_element( CFF_Index idx,
|
|
|
471 |
FT_UInt element,
|
|
|
472 |
FT_Byte** pbytes,
|
|
|
473 |
FT_ULong* pbyte_len )
|
|
|
474 |
{
|
|
|
475 |
FT_Error error = CFF_Err_Ok;
|
|
|
476 |
|
|
|
477 |
|
|
|
478 |
if ( idx && idx->count > element )
|
|
|
479 |
{
|
|
|
480 |
/* compute start and end offsets */
|
|
|
481 |
FT_Stream stream = idx->stream;
|
|
|
482 |
FT_ULong off1, off2 = 0;
|
|
|
483 |
|
|
|
484 |
|
|
|
485 |
/* load offsets from file or the offset table */
|
|
|
486 |
if ( !idx->offsets )
|
|
|
487 |
{
|
|
|
488 |
FT_ULong pos = element * idx->off_size;
|
|
|
489 |
|
|
|
490 |
|
|
|
491 |
if ( FT_STREAM_SEEK( idx->start + 3 + pos ) )
|
|
|
492 |
goto Exit;
|
|
|
493 |
|
|
|
494 |
off1 = cff_index_read_offset( idx, &error );
|
|
|
495 |
if ( error )
|
|
|
496 |
goto Exit;
|
|
|
497 |
|
|
|
498 |
if ( off1 != 0 )
|
|
|
499 |
{
|
|
|
500 |
do
|
|
|
501 |
{
|
|
|
502 |
element++;
|
|
|
503 |
off2 = cff_index_read_offset( idx, &error );
|
|
|
504 |
}
|
|
|
505 |
while ( off2 == 0 && element < idx->count );
|
|
|
506 |
}
|
|
|
507 |
}
|
|
|
508 |
else /* use offsets table */
|
|
|
509 |
{
|
|
|
510 |
off1 = idx->offsets[element];
|
|
|
511 |
if ( off1 )
|
|
|
512 |
{
|
|
|
513 |
do
|
|
|
514 |
{
|
|
|
515 |
element++;
|
|
|
516 |
off2 = idx->offsets[element];
|
|
|
517 |
|
|
|
518 |
} while ( off2 == 0 && element < idx->count );
|
|
|
519 |
}
|
|
|
520 |
}
|
|
|
521 |
|
|
|
522 |
/* XXX: should check off2 does not exceed the end of this entry; */
|
|
|
523 |
/* at present, only truncate off2 at the end of this stream */
|
|
|
524 |
if ( off2 > stream->size + 1 ||
|
|
|
525 |
idx->data_offset > stream->size - off2 + 1 )
|
|
|
526 |
{
|
|
|
527 |
FT_ERROR(( "cff_index_access_element:"
|
|
|
528 |
" offset to next entry (%d)"
|
|
|
529 |
" exceeds the end of stream (%d)\n",
|
|
|
530 |
off2, stream->size - idx->data_offset + 1 ));
|
|
|
531 |
off2 = stream->size - idx->data_offset + 1;
|
|
|
532 |
}
|
|
|
533 |
|
|
|
534 |
/* access element */
|
|
|
535 |
if ( off1 && off2 > off1 )
|
|
|
536 |
{
|
|
|
537 |
*pbyte_len = off2 - off1;
|
|
|
538 |
|
|
|
539 |
if ( idx->bytes )
|
|
|
540 |
{
|
|
|
541 |
/* this index was completely loaded in memory, that's easy */
|
|
|
542 |
*pbytes = idx->bytes + off1 - 1;
|
|
|
543 |
}
|
|
|
544 |
else
|
|
|
545 |
{
|
|
|
546 |
/* this index is still on disk/file, access it through a frame */
|
|
|
547 |
if ( FT_STREAM_SEEK( idx->data_offset + off1 - 1 ) ||
|
|
|
548 |
FT_FRAME_EXTRACT( off2 - off1, *pbytes ) )
|
|
|
549 |
goto Exit;
|
|
|
550 |
}
|
|
|
551 |
}
|
|
|
552 |
else
|
|
|
553 |
{
|
|
|
554 |
/* empty index element */
|
|
|
555 |
*pbytes = 0;
|
|
|
556 |
*pbyte_len = 0;
|
|
|
557 |
}
|
|
|
558 |
}
|
|
|
559 |
else
|
|
|
560 |
error = CFF_Err_Invalid_Argument;
|
|
|
561 |
|
|
|
562 |
Exit:
|
|
|
563 |
return error;
|
|
|
564 |
}
|
|
|
565 |
|
|
|
566 |
|
|
|
567 |
FT_LOCAL_DEF( void )
|
|
|
568 |
cff_index_forget_element( CFF_Index idx,
|
|
|
569 |
FT_Byte** pbytes )
|
|
|
570 |
{
|
|
|
571 |
if ( idx->bytes == 0 )
|
|
|
572 |
{
|
|
|
573 |
FT_Stream stream = idx->stream;
|
|
|
574 |
|
|
|
575 |
|
|
|
576 |
FT_FRAME_RELEASE( *pbytes );
|
|
|
577 |
}
|
|
|
578 |
}
|
|
|
579 |
|
|
|
580 |
|
|
|
581 |
/* get an entry from Name INDEX */
|
|
|
582 |
FT_LOCAL_DEF( FT_String* )
|
|
|
583 |
cff_index_get_name( CFF_Font font,
|
|
|
584 |
FT_UInt element )
|
|
|
585 |
{
|
|
|
586 |
CFF_Index idx = &font->name_index;
|
|
|
587 |
FT_Memory memory = idx->stream->memory;
|
|
|
588 |
FT_Byte* bytes;
|
|
|
589 |
FT_ULong byte_len;
|
|
|
590 |
FT_Error error;
|
|
|
591 |
FT_String* name = 0;
|
|
|
592 |
|
|
|
593 |
|
|
|
594 |
error = cff_index_access_element( idx, element, &bytes, &byte_len );
|
|
|
595 |
if ( error )
|
|
|
596 |
goto Exit;
|
|
|
597 |
|
|
|
598 |
if ( !FT_ALLOC( name, byte_len + 1 ) )
|
|
|
599 |
{
|
|
|
600 |
FT_MEM_COPY( name, bytes, byte_len );
|
|
|
601 |
name[byte_len] = 0;
|
|
|
602 |
}
|
|
|
603 |
cff_index_forget_element( idx, &bytes );
|
|
|
604 |
|
|
|
605 |
Exit:
|
|
|
606 |
return name;
|
|
|
607 |
}
|
|
|
608 |
|
|
|
609 |
|
|
|
610 |
/* get an entry from String INDEX */
|
|
|
611 |
FT_LOCAL_DEF( FT_String* )
|
|
|
612 |
cff_index_get_string( CFF_Font font,
|
|
|
613 |
FT_UInt element )
|
|
|
614 |
{
|
|
|
615 |
return ( element < font->num_strings )
|
|
|
616 |
? (FT_String*)font->strings[element]
|
|
|
617 |
: NULL;
|
|
|
618 |
}
|
|
|
619 |
|
|
|
620 |
|
|
|
621 |
FT_LOCAL_DEF( FT_String* )
|
|
|
622 |
cff_index_get_sid_string( CFF_Font font,
|
|
|
623 |
FT_UInt sid )
|
|
|
624 |
{
|
|
|
625 |
/* value 0xFFFFU indicates a missing dictionary entry */
|
|
|
626 |
if ( sid == 0xFFFFU )
|
|
|
627 |
return NULL;
|
|
|
628 |
|
|
|
629 |
/* if it is not a standard string, return it */
|
|
|
630 |
if ( sid > 390 )
|
|
|
631 |
return cff_index_get_string( font, sid - 391 );
|
|
|
632 |
|
|
|
633 |
/* CID-keyed CFF fonts don't have glyph names */
|
|
|
634 |
if ( !font->psnames )
|
|
|
635 |
return NULL;
|
|
|
636 |
|
|
|
637 |
/* this is a standard string */
|
|
|
638 |
return (FT_String *)font->psnames->adobe_std_strings( sid );
|
|
|
639 |
}
|
|
|
640 |
|
|
|
641 |
|
|
|
642 |
/*************************************************************************/
|
|
|
643 |
/*************************************************************************/
|
|
|
644 |
/*** ***/
|
|
|
645 |
/*** FD Select table support ***/
|
|
|
646 |
/*** ***/
|
|
|
647 |
/*************************************************************************/
|
|
|
648 |
/*************************************************************************/
|
|
|
649 |
|
|
|
650 |
|
|
|
651 |
static void
|
|
|
652 |
CFF_Done_FD_Select( CFF_FDSelect fdselect,
|
|
|
653 |
FT_Stream stream )
|
|
|
654 |
{
|
|
|
655 |
if ( fdselect->data )
|
|
|
656 |
FT_FRAME_RELEASE( fdselect->data );
|
|
|
657 |
|
|
|
658 |
fdselect->data_size = 0;
|
|
|
659 |
fdselect->format = 0;
|
|
|
660 |
fdselect->range_count = 0;
|
|
|
661 |
}
|
|
|
662 |
|
|
|
663 |
|
|
|
664 |
static FT_Error
|
|
|
665 |
CFF_Load_FD_Select( CFF_FDSelect fdselect,
|
|
|
666 |
FT_UInt num_glyphs,
|
|
|
667 |
FT_Stream stream,
|
|
|
668 |
FT_ULong offset )
|
|
|
669 |
{
|
|
|
670 |
FT_Error error;
|
|
|
671 |
FT_Byte format;
|
|
|
672 |
FT_UInt num_ranges;
|
|
|
673 |
|
|
|
674 |
|
|
|
675 |
/* read format */
|
|
|
676 |
if ( FT_STREAM_SEEK( offset ) || FT_READ_BYTE( format ) )
|
|
|
677 |
goto Exit;
|
|
|
678 |
|
|
|
679 |
fdselect->format = format;
|
|
|
680 |
fdselect->cache_count = 0; /* clear cache */
|
|
|
681 |
|
|
|
682 |
switch ( format )
|
|
|
683 |
{
|
|
|
684 |
case 0: /* format 0, that's simple */
|
|
|
685 |
fdselect->data_size = num_glyphs;
|
|
|
686 |
goto Load_Data;
|
|
|
687 |
|
|
|
688 |
case 3: /* format 3, a tad more complex */
|
|
|
689 |
if ( FT_READ_USHORT( num_ranges ) )
|
|
|
690 |
goto Exit;
|
|
|
691 |
|
|
|
692 |
fdselect->data_size = num_ranges * 3 + 2;
|
|
|
693 |
|
|
|
694 |
Load_Data:
|
|
|
695 |
if ( FT_FRAME_EXTRACT( fdselect->data_size, fdselect->data ) )
|
|
|
696 |
goto Exit;
|
|
|
697 |
break;
|
|
|
698 |
|
|
|
699 |
default: /* hmm... that's wrong */
|
|
|
700 |
error = CFF_Err_Invalid_File_Format;
|
|
|
701 |
}
|
|
|
702 |
|
|
|
703 |
Exit:
|
|
|
704 |
return error;
|
|
|
705 |
}
|
|
|
706 |
|
|
|
707 |
|
|
|
708 |
FT_LOCAL_DEF( FT_Byte )
|
|
|
709 |
cff_fd_select_get( CFF_FDSelect fdselect,
|
|
|
710 |
FT_UInt glyph_index )
|
|
|
711 |
{
|
|
|
712 |
FT_Byte fd = 0;
|
|
|
713 |
|
|
|
714 |
|
|
|
715 |
switch ( fdselect->format )
|
|
|
716 |
{
|
|
|
717 |
case 0:
|
|
|
718 |
fd = fdselect->data[glyph_index];
|
|
|
719 |
break;
|
|
|
720 |
|
|
|
721 |
case 3:
|
|
|
722 |
/* first, compare to cache */
|
|
|
723 |
if ( (FT_UInt)( glyph_index - fdselect->cache_first ) <
|
|
|
724 |
fdselect->cache_count )
|
|
|
725 |
{
|
|
|
726 |
fd = fdselect->cache_fd;
|
|
|
727 |
break;
|
|
|
728 |
}
|
|
|
729 |
|
|
|
730 |
/* then, lookup the ranges array */
|
|
|
731 |
{
|
|
|
732 |
FT_Byte* p = fdselect->data;
|
|
|
733 |
FT_Byte* p_limit = p + fdselect->data_size;
|
|
|
734 |
FT_Byte fd2;
|
|
|
735 |
FT_UInt first, limit;
|
|
|
736 |
|
|
|
737 |
|
|
|
738 |
first = FT_NEXT_USHORT( p );
|
|
|
739 |
do
|
|
|
740 |
{
|
|
|
741 |
if ( glyph_index < first )
|
|
|
742 |
break;
|
|
|
743 |
|
|
|
744 |
fd2 = *p++;
|
|
|
745 |
limit = FT_NEXT_USHORT( p );
|
|
|
746 |
|
|
|
747 |
if ( glyph_index < limit )
|
|
|
748 |
{
|
|
|
749 |
fd = fd2;
|
|
|
750 |
|
|
|
751 |
/* update cache */
|
|
|
752 |
fdselect->cache_first = first;
|
|
|
753 |
fdselect->cache_count = limit-first;
|
|
|
754 |
fdselect->cache_fd = fd2;
|
|
|
755 |
break;
|
|
|
756 |
}
|
|
|
757 |
first = limit;
|
|
|
758 |
|
|
|
759 |
} while ( p < p_limit );
|
|
|
760 |
}
|
|
|
761 |
break;
|
|
|
762 |
|
|
|
763 |
default:
|
|
|
764 |
;
|
|
|
765 |
}
|
|
|
766 |
|
|
|
767 |
return fd;
|
|
|
768 |
}
|
|
|
769 |
|
|
|
770 |
|
|
|
771 |
/*************************************************************************/
|
|
|
772 |
/*************************************************************************/
|
|
|
773 |
/*** ***/
|
|
|
774 |
/*** CFF font support ***/
|
|
|
775 |
/*** ***/
|
|
|
776 |
/*************************************************************************/
|
|
|
777 |
/*************************************************************************/
|
|
|
778 |
|
|
|
779 |
static FT_Error
|
|
|
780 |
cff_charset_compute_cids( CFF_Charset charset,
|
|
|
781 |
FT_UInt num_glyphs,
|
|
|
782 |
FT_Memory memory )
|
|
|
783 |
{
|
|
|
784 |
FT_Error error = CFF_Err_Ok;
|
|
|
785 |
FT_UInt i;
|
|
|
786 |
FT_Long j;
|
|
|
787 |
FT_UShort max_cid = 0;
|
|
|
788 |
|
|
|
789 |
|
|
|
790 |
if ( charset->max_cid > 0 )
|
|
|
791 |
goto Exit;
|
|
|
792 |
|
|
|
793 |
for ( i = 0; i < num_glyphs; i++ )
|
|
|
794 |
{
|
|
|
795 |
if ( charset->sids[i] > max_cid )
|
|
|
796 |
max_cid = charset->sids[i];
|
|
|
797 |
}
|
|
|
798 |
|
|
|
799 |
if ( FT_NEW_ARRAY( charset->cids, (FT_ULong)max_cid + 1 ) )
|
|
|
800 |
goto Exit;
|
|
|
801 |
|
|
|
802 |
/* When multiple GIDs map to the same CID, we choose the lowest */
|
|
|
803 |
/* GID. This is not described in any spec, but it matches the */
|
|
|
804 |
/* behaviour of recent Acroread versions. */
|
|
|
805 |
for ( j = num_glyphs - 1; j >= 0 ; j-- )
|
|
|
806 |
charset->cids[charset->sids[j]] = (FT_UShort)j;
|
|
|
807 |
|
|
|
808 |
charset->max_cid = max_cid;
|
|
|
809 |
charset->num_glyphs = num_glyphs;
|
|
|
810 |
|
|
|
811 |
Exit:
|
|
|
812 |
return error;
|
|
|
813 |
}
|
|
|
814 |
|
|
|
815 |
|
|
|
816 |
FT_LOCAL_DEF( FT_UInt )
|
|
|
817 |
cff_charset_cid_to_gindex( CFF_Charset charset,
|
|
|
818 |
FT_UInt cid )
|
|
|
819 |
{
|
|
|
820 |
FT_UInt result = 0;
|
|
|
821 |
|
|
|
822 |
|
|
|
823 |
if ( cid <= charset->max_cid )
|
|
|
824 |
result = charset->cids[cid];
|
|
|
825 |
|
|
|
826 |
return result;
|
|
|
827 |
}
|
|
|
828 |
|
|
|
829 |
|
|
|
830 |
static void
|
|
|
831 |
cff_charset_free_cids( CFF_Charset charset,
|
|
|
832 |
FT_Memory memory )
|
|
|
833 |
{
|
|
|
834 |
FT_FREE( charset->cids );
|
|
|
835 |
charset->max_cid = 0;
|
|
|
836 |
}
|
|
|
837 |
|
|
|
838 |
|
|
|
839 |
static void
|
|
|
840 |
cff_charset_done( CFF_Charset charset,
|
|
|
841 |
FT_Stream stream )
|
|
|
842 |
{
|
|
|
843 |
FT_Memory memory = stream->memory;
|
|
|
844 |
|
|
|
845 |
|
|
|
846 |
cff_charset_free_cids( charset, memory );
|
|
|
847 |
|
|
|
848 |
FT_FREE( charset->sids );
|
|
|
849 |
charset->format = 0;
|
|
|
850 |
charset->offset = 0;
|
|
|
851 |
}
|
|
|
852 |
|
|
|
853 |
|
|
|
854 |
static FT_Error
|
|
|
855 |
cff_charset_load( CFF_Charset charset,
|
|
|
856 |
FT_UInt num_glyphs,
|
|
|
857 |
FT_Stream stream,
|
|
|
858 |
FT_ULong base_offset,
|
|
|
859 |
FT_ULong offset,
|
|
|
860 |
FT_Bool invert )
|
|
|
861 |
{
|
|
|
862 |
FT_Memory memory = stream->memory;
|
|
|
863 |
FT_Error error = CFF_Err_Ok;
|
|
|
864 |
FT_UShort glyph_sid;
|
|
|
865 |
|
|
|
866 |
|
|
|
867 |
/* If the the offset is greater than 2, we have to parse the */
|
|
|
868 |
/* charset table. */
|
|
|
869 |
if ( offset > 2 )
|
|
|
870 |
{
|
|
|
871 |
FT_UInt j;
|
|
|
872 |
|
|
|
873 |
|
|
|
874 |
charset->offset = base_offset + offset;
|
|
|
875 |
|
|
|
876 |
/* Get the format of the table. */
|
|
|
877 |
if ( FT_STREAM_SEEK( charset->offset ) ||
|
|
|
878 |
FT_READ_BYTE( charset->format ) )
|
|
|
879 |
goto Exit;
|
|
|
880 |
|
|
|
881 |
/* Allocate memory for sids. */
|
|
|
882 |
if ( FT_NEW_ARRAY( charset->sids, num_glyphs ) )
|
|
|
883 |
goto Exit;
|
|
|
884 |
|
|
|
885 |
/* assign the .notdef glyph */
|
|
|
886 |
charset->sids[0] = 0;
|
|
|
887 |
|
|
|
888 |
switch ( charset->format )
|
|
|
889 |
{
|
|
|
890 |
case 0:
|
|
|
891 |
if ( num_glyphs > 0 )
|
|
|
892 |
{
|
|
|
893 |
if ( FT_FRAME_ENTER( ( num_glyphs - 1 ) * 2 ) )
|
|
|
894 |
goto Exit;
|
|
|
895 |
|
|
|
896 |
for ( j = 1; j < num_glyphs; j++ )
|
|
|
897 |
charset->sids[j] = FT_GET_USHORT();
|
|
|
898 |
|
|
|
899 |
FT_FRAME_EXIT();
|
|
|
900 |
}
|
|
|
901 |
break;
|
|
|
902 |
|
|
|
903 |
case 1:
|
|
|
904 |
case 2:
|
|
|
905 |
{
|
|
|
906 |
FT_UInt nleft;
|
|
|
907 |
FT_UInt i;
|
|
|
908 |
|
|
|
909 |
|
|
|
910 |
j = 1;
|
|
|
911 |
|
|
|
912 |
while ( j < num_glyphs )
|
|
|
913 |
{
|
|
|
914 |
/* Read the first glyph sid of the range. */
|
|
|
915 |
if ( FT_READ_USHORT( glyph_sid ) )
|
|
|
916 |
goto Exit;
|
|
|
917 |
|
|
|
918 |
/* Read the number of glyphs in the range. */
|
|
|
919 |
if ( charset->format == 2 )
|
|
|
920 |
{
|
|
|
921 |
if ( FT_READ_USHORT( nleft ) )
|
|
|
922 |
goto Exit;
|
|
|
923 |
}
|
|
|
924 |
else
|
|
|
925 |
{
|
|
|
926 |
if ( FT_READ_BYTE( nleft ) )
|
|
|
927 |
goto Exit;
|
|
|
928 |
}
|
|
|
929 |
|
|
|
930 |
/* try to rescue some of the SIDs if `nleft' is too large */
|
|
|
931 |
if ( glyph_sid > 0xFFFFL - nleft )
|
|
|
932 |
{
|
|
|
933 |
FT_ERROR(( "cff_charset_load: invalid SID range trimmed"
|
|
|
934 |
" nleft=%d -> %d\n", nleft, 0xFFFFL - glyph_sid ));
|
|
|
935 |
nleft = ( FT_UInt )( 0xFFFFL - glyph_sid );
|
|
|
936 |
}
|
|
|
937 |
|
|
|
938 |
/* Fill in the range of sids -- `nleft + 1' glyphs. */
|
|
|
939 |
for ( i = 0; j < num_glyphs && i <= nleft; i++, j++, glyph_sid++ )
|
|
|
940 |
charset->sids[j] = glyph_sid;
|
|
|
941 |
}
|
|
|
942 |
}
|
|
|
943 |
break;
|
|
|
944 |
|
|
|
945 |
default:
|
|
|
946 |
FT_ERROR(( "cff_charset_load: invalid table format\n" ));
|
|
|
947 |
error = CFF_Err_Invalid_File_Format;
|
|
|
948 |
goto Exit;
|
|
|
949 |
}
|
|
|
950 |
}
|
|
|
951 |
else
|
|
|
952 |
{
|
|
|
953 |
/* Parse default tables corresponding to offset == 0, 1, or 2. */
|
|
|
954 |
/* CFF specification intimates the following: */
|
|
|
955 |
/* */
|
|
|
956 |
/* In order to use a predefined charset, the following must be */
|
|
|
957 |
/* true: The charset constructed for the glyphs in the font's */
|
|
|
958 |
/* charstrings dictionary must match the predefined charset in */
|
|
|
959 |
/* the first num_glyphs. */
|
|
|
960 |
|
|
|
961 |
charset->offset = offset; /* record charset type */
|
|
|
962 |
|
|
|
963 |
switch ( (FT_UInt)offset )
|
|
|
964 |
{
|
|
|
965 |
case 0:
|
|
|
966 |
if ( num_glyphs > 229 )
|
|
|
967 |
{
|
|
|
968 |
FT_ERROR(( "cff_charset_load: implicit charset larger than\n"
|
|
|
969 |
"predefined charset (Adobe ISO-Latin)\n" ));
|
|
|
970 |
error = CFF_Err_Invalid_File_Format;
|
|
|
971 |
goto Exit;
|
|
|
972 |
}
|
|
|
973 |
|
|
|
974 |
/* Allocate memory for sids. */
|
|
|
975 |
if ( FT_NEW_ARRAY( charset->sids, num_glyphs ) )
|
|
|
976 |
goto Exit;
|
|
|
977 |
|
|
|
978 |
/* Copy the predefined charset into the allocated memory. */
|
|
|
979 |
FT_ARRAY_COPY( charset->sids, cff_isoadobe_charset, num_glyphs );
|
|
|
980 |
|
|
|
981 |
break;
|
|
|
982 |
|
|
|
983 |
case 1:
|
|
|
984 |
if ( num_glyphs > 166 )
|
|
|
985 |
{
|
|
|
986 |
FT_ERROR(( "cff_charset_load: implicit charset larger than\n"
|
|
|
987 |
"predefined charset (Adobe Expert)\n" ));
|
|
|
988 |
error = CFF_Err_Invalid_File_Format;
|
|
|
989 |
goto Exit;
|
|
|
990 |
}
|
|
|
991 |
|
|
|
992 |
/* Allocate memory for sids. */
|
|
|
993 |
if ( FT_NEW_ARRAY( charset->sids, num_glyphs ) )
|
|
|
994 |
goto Exit;
|
|
|
995 |
|
|
|
996 |
/* Copy the predefined charset into the allocated memory. */
|
|
|
997 |
FT_ARRAY_COPY( charset->sids, cff_expert_charset, num_glyphs );
|
|
|
998 |
|
|
|
999 |
break;
|
|
|
1000 |
|
|
|
1001 |
case 2:
|
|
|
1002 |
if ( num_glyphs > 87 )
|
|
|
1003 |
{
|
|
|
1004 |
FT_ERROR(( "cff_charset_load: implicit charset larger than\n"
|
|
|
1005 |
"predefined charset (Adobe Expert Subset)\n" ));
|
|
|
1006 |
error = CFF_Err_Invalid_File_Format;
|
|
|
1007 |
goto Exit;
|
|
|
1008 |
}
|
|
|
1009 |
|
|
|
1010 |
/* Allocate memory for sids. */
|
|
|
1011 |
if ( FT_NEW_ARRAY( charset->sids, num_glyphs ) )
|
|
|
1012 |
goto Exit;
|
|
|
1013 |
|
|
|
1014 |
/* Copy the predefined charset into the allocated memory. */
|
|
|
1015 |
FT_ARRAY_COPY( charset->sids, cff_expertsubset_charset, num_glyphs );
|
|
|
1016 |
|
|
|
1017 |
break;
|
|
|
1018 |
|
|
|
1019 |
default:
|
|
|
1020 |
error = CFF_Err_Invalid_File_Format;
|
|
|
1021 |
goto Exit;
|
|
|
1022 |
}
|
|
|
1023 |
}
|
|
|
1024 |
|
|
|
1025 |
/* we have to invert the `sids' array for subsetted CID-keyed fonts */
|
|
|
1026 |
if ( invert )
|
|
|
1027 |
error = cff_charset_compute_cids( charset, num_glyphs, memory );
|
|
|
1028 |
|
|
|
1029 |
Exit:
|
|
|
1030 |
/* Clean up if there was an error. */
|
|
|
1031 |
if ( error )
|
|
|
1032 |
{
|
|
|
1033 |
FT_FREE( charset->sids );
|
|
|
1034 |
FT_FREE( charset->cids );
|
|
|
1035 |
charset->format = 0;
|
|
|
1036 |
charset->offset = 0;
|
|
|
1037 |
charset->sids = 0;
|
|
|
1038 |
}
|
|
|
1039 |
|
|
|
1040 |
return error;
|
|
|
1041 |
}
|
|
|
1042 |
|
|
|
1043 |
|
|
|
1044 |
static void
|
|
|
1045 |
cff_encoding_done( CFF_Encoding encoding )
|
|
|
1046 |
{
|
|
|
1047 |
encoding->format = 0;
|
|
|
1048 |
encoding->offset = 0;
|
|
|
1049 |
encoding->count = 0;
|
|
|
1050 |
}
|
|
|
1051 |
|
|
|
1052 |
|
|
|
1053 |
static FT_Error
|
|
|
1054 |
cff_encoding_load( CFF_Encoding encoding,
|
|
|
1055 |
CFF_Charset charset,
|
|
|
1056 |
FT_UInt num_glyphs,
|
|
|
1057 |
FT_Stream stream,
|
|
|
1058 |
FT_ULong base_offset,
|
|
|
1059 |
FT_ULong offset )
|
|
|
1060 |
{
|
|
|
1061 |
FT_Error error = CFF_Err_Ok;
|
|
|
1062 |
FT_UInt count;
|
|
|
1063 |
FT_UInt j;
|
|
|
1064 |
FT_UShort glyph_sid;
|
|
|
1065 |
FT_UInt glyph_code;
|
|
|
1066 |
|
|
|
1067 |
|
|
|
1068 |
/* Check for charset->sids. If we do not have this, we fail. */
|
|
|
1069 |
if ( !charset->sids )
|
|
|
1070 |
{
|
|
|
1071 |
error = CFF_Err_Invalid_File_Format;
|
|
|
1072 |
goto Exit;
|
|
|
1073 |
}
|
|
|
1074 |
|
|
|
1075 |
/* Zero out the code to gid/sid mappings. */
|
|
|
1076 |
for ( j = 0; j < 256; j++ )
|
|
|
1077 |
{
|
|
|
1078 |
encoding->sids [j] = 0;
|
|
|
1079 |
encoding->codes[j] = 0;
|
|
|
1080 |
}
|
|
|
1081 |
|
|
|
1082 |
/* Note: The encoding table in a CFF font is indexed by glyph index; */
|
|
|
1083 |
/* the first encoded glyph index is 1. Hence, we read the character */
|
|
|
1084 |
/* code (`glyph_code') at index j and make the assignment: */
|
|
|
1085 |
/* */
|
|
|
1086 |
/* encoding->codes[glyph_code] = j + 1 */
|
|
|
1087 |
/* */
|
|
|
1088 |
/* We also make the assignment: */
|
|
|
1089 |
/* */
|
|
|
1090 |
/* encoding->sids[glyph_code] = charset->sids[j + 1] */
|
|
|
1091 |
/* */
|
|
|
1092 |
/* This gives us both a code to GID and a code to SID mapping. */
|
|
|
1093 |
|
|
|
1094 |
if ( offset > 1 )
|
|
|
1095 |
{
|
|
|
1096 |
encoding->offset = base_offset + offset;
|
|
|
1097 |
|
|
|
1098 |
/* we need to parse the table to determine its size */
|
|
|
1099 |
if ( FT_STREAM_SEEK( encoding->offset ) ||
|
|
|
1100 |
FT_READ_BYTE( encoding->format ) ||
|
|
|
1101 |
FT_READ_BYTE( count ) )
|
|
|
1102 |
goto Exit;
|
|
|
1103 |
|
|
|
1104 |
switch ( encoding->format & 0x7F )
|
|
|
1105 |
{
|
|
|
1106 |
case 0:
|
|
|
1107 |
{
|
|
|
1108 |
FT_Byte* p;
|
|
|
1109 |
|
|
|
1110 |
|
|
|
1111 |
/* By convention, GID 0 is always ".notdef" and is never */
|
|
|
1112 |
/* coded in the font. Hence, the number of codes found */
|
|
|
1113 |
/* in the table is `count+1'. */
|
|
|
1114 |
/* */
|
|
|
1115 |
encoding->count = count + 1;
|
|
|
1116 |
|
|
|
1117 |
if ( FT_FRAME_ENTER( count ) )
|
|
|
1118 |
goto Exit;
|
|
|
1119 |
|
|
|
1120 |
p = (FT_Byte*)stream->cursor;
|
|
|
1121 |
|
|
|
1122 |
for ( j = 1; j <= count; j++ )
|
|
|
1123 |
{
|
|
|
1124 |
glyph_code = *p++;
|
|
|
1125 |
|
|
|
1126 |
/* Make sure j is not too big. */
|
|
|
1127 |
if ( j < num_glyphs )
|
|
|
1128 |
{
|
|
|
1129 |
/* Assign code to GID mapping. */
|
|
|
1130 |
encoding->codes[glyph_code] = (FT_UShort)j;
|
|
|
1131 |
|
|
|
1132 |
/* Assign code to SID mapping. */
|
|
|
1133 |
encoding->sids[glyph_code] = charset->sids[j];
|
|
|
1134 |
}
|
|
|
1135 |
}
|
|
|
1136 |
|
|
|
1137 |
FT_FRAME_EXIT();
|
|
|
1138 |
}
|
|
|
1139 |
break;
|
|
|
1140 |
|
|
|
1141 |
case 1:
|
|
|
1142 |
{
|
|
|
1143 |
FT_UInt nleft;
|
|
|
1144 |
FT_UInt i = 1;
|
|
|
1145 |
FT_UInt k;
|
|
|
1146 |
|
|
|
1147 |
|
|
|
1148 |
encoding->count = 0;
|
|
|
1149 |
|
|
|
1150 |
/* Parse the Format1 ranges. */
|
|
|
1151 |
for ( j = 0; j < count; j++, i += nleft )
|
|
|
1152 |
{
|
|
|
1153 |
/* Read the first glyph code of the range. */
|
|
|
1154 |
if ( FT_READ_BYTE( glyph_code ) )
|
|
|
1155 |
goto Exit;
|
|
|
1156 |
|
|
|
1157 |
/* Read the number of codes in the range. */
|
|
|
1158 |
if ( FT_READ_BYTE( nleft ) )
|
|
|
1159 |
goto Exit;
|
|
|
1160 |
|
|
|
1161 |
/* Increment nleft, so we read `nleft + 1' codes/sids. */
|
|
|
1162 |
nleft++;
|
|
|
1163 |
|
|
|
1164 |
/* compute max number of character codes */
|
|
|
1165 |
if ( (FT_UInt)nleft > encoding->count )
|
|
|
1166 |
encoding->count = nleft;
|
|
|
1167 |
|
|
|
1168 |
/* Fill in the range of codes/sids. */
|
|
|
1169 |
for ( k = i; k < nleft + i; k++, glyph_code++ )
|
|
|
1170 |
{
|
|
|
1171 |
/* Make sure k is not too big. */
|
|
|
1172 |
if ( k < num_glyphs && glyph_code < 256 )
|
|
|
1173 |
{
|
|
|
1174 |
/* Assign code to GID mapping. */
|
|
|
1175 |
encoding->codes[glyph_code] = (FT_UShort)k;
|
|
|
1176 |
|
|
|
1177 |
/* Assign code to SID mapping. */
|
|
|
1178 |
encoding->sids[glyph_code] = charset->sids[k];
|
|
|
1179 |
}
|
|
|
1180 |
}
|
|
|
1181 |
}
|
|
|
1182 |
|
|
|
1183 |
/* simple check; one never knows what can be found in a font */
|
|
|
1184 |
if ( encoding->count > 256 )
|
|
|
1185 |
encoding->count = 256;
|
|
|
1186 |
}
|
|
|
1187 |
break;
|
|
|
1188 |
|
|
|
1189 |
default:
|
|
|
1190 |
FT_ERROR(( "cff_encoding_load: invalid table format\n" ));
|
|
|
1191 |
error = CFF_Err_Invalid_File_Format;
|
|
|
1192 |
goto Exit;
|
|
|
1193 |
}
|
|
|
1194 |
|
|
|
1195 |
/* Parse supplemental encodings, if any. */
|
|
|
1196 |
if ( encoding->format & 0x80 )
|
|
|
1197 |
{
|
|
|
1198 |
FT_UInt gindex;
|
|
|
1199 |
|
|
|
1200 |
|
|
|
1201 |
/* count supplements */
|
|
|
1202 |
if ( FT_READ_BYTE( count ) )
|
|
|
1203 |
goto Exit;
|
|
|
1204 |
|
|
|
1205 |
for ( j = 0; j < count; j++ )
|
|
|
1206 |
{
|
|
|
1207 |
/* Read supplemental glyph code. */
|
|
|
1208 |
if ( FT_READ_BYTE( glyph_code ) )
|
|
|
1209 |
goto Exit;
|
|
|
1210 |
|
|
|
1211 |
/* Read the SID associated with this glyph code. */
|
|
|
1212 |
if ( FT_READ_USHORT( glyph_sid ) )
|
|
|
1213 |
goto Exit;
|
|
|
1214 |
|
|
|
1215 |
/* Assign code to SID mapping. */
|
|
|
1216 |
encoding->sids[glyph_code] = glyph_sid;
|
|
|
1217 |
|
|
|
1218 |
/* First, look up GID which has been assigned to */
|
|
|
1219 |
/* SID glyph_sid. */
|
|
|
1220 |
for ( gindex = 0; gindex < num_glyphs; gindex++ )
|
|
|
1221 |
{
|
|
|
1222 |
if ( charset->sids[gindex] == glyph_sid )
|
|
|
1223 |
{
|
|
|
1224 |
encoding->codes[glyph_code] = (FT_UShort)gindex;
|
|
|
1225 |
break;
|
|
|
1226 |
}
|
|
|
1227 |
}
|
|
|
1228 |
}
|
|
|
1229 |
}
|
|
|
1230 |
}
|
|
|
1231 |
else
|
|
|
1232 |
{
|
|
|
1233 |
/* We take into account the fact a CFF font can use a predefined */
|
|
|
1234 |
/* encoding without containing all of the glyphs encoded by this */
|
|
|
1235 |
/* encoding (see the note at the end of section 12 in the CFF */
|
|
|
1236 |
/* specification). */
|
|
|
1237 |
|
|
|
1238 |
switch ( (FT_UInt)offset )
|
|
|
1239 |
{
|
|
|
1240 |
case 0:
|
|
|
1241 |
/* First, copy the code to SID mapping. */
|
|
|
1242 |
FT_ARRAY_COPY( encoding->sids, cff_standard_encoding, 256 );
|
|
|
1243 |
goto Populate;
|
|
|
1244 |
|
|
|
1245 |
case 1:
|
|
|
1246 |
/* First, copy the code to SID mapping. */
|
|
|
1247 |
FT_ARRAY_COPY( encoding->sids, cff_expert_encoding, 256 );
|
|
|
1248 |
|
|
|
1249 |
Populate:
|
|
|
1250 |
/* Construct code to GID mapping from code to SID mapping */
|
|
|
1251 |
/* and charset. */
|
|
|
1252 |
|
|
|
1253 |
encoding->count = 0;
|
|
|
1254 |
|
|
|
1255 |
error = cff_charset_compute_cids( charset, num_glyphs,
|
|
|
1256 |
stream->memory );
|
|
|
1257 |
if ( error )
|
|
|
1258 |
goto Exit;
|
|
|
1259 |
|
|
|
1260 |
for ( j = 0; j < 256; j++ )
|
|
|
1261 |
{
|
|
|
1262 |
FT_UInt sid = encoding->sids[j];
|
|
|
1263 |
FT_UInt gid = 0;
|
|
|
1264 |
|
|
|
1265 |
|
|
|
1266 |
if ( sid )
|
|
|
1267 |
gid = cff_charset_cid_to_gindex( charset, sid );
|
|
|
1268 |
|
|
|
1269 |
if ( gid != 0 )
|
|
|
1270 |
{
|
|
|
1271 |
encoding->codes[j] = (FT_UShort)gid;
|
|
|
1272 |
encoding->count = j + 1;
|
|
|
1273 |
}
|
|
|
1274 |
else
|
|
|
1275 |
{
|
|
|
1276 |
encoding->codes[j] = 0;
|
|
|
1277 |
encoding->sids [j] = 0;
|
|
|
1278 |
}
|
|
|
1279 |
}
|
|
|
1280 |
break;
|
|
|
1281 |
|
|
|
1282 |
default:
|
|
|
1283 |
FT_ERROR(( "cff_encoding_load: invalid table format\n" ));
|
|
|
1284 |
error = CFF_Err_Invalid_File_Format;
|
|
|
1285 |
goto Exit;
|
|
|
1286 |
}
|
|
|
1287 |
}
|
|
|
1288 |
|
|
|
1289 |
Exit:
|
|
|
1290 |
|
|
|
1291 |
/* Clean up if there was an error. */
|
|
|
1292 |
return error;
|
|
|
1293 |
}
|
|
|
1294 |
|
|
|
1295 |
|
|
|
1296 |
static FT_Error
|
|
|
1297 |
cff_subfont_load( CFF_SubFont font,
|
|
|
1298 |
CFF_Index idx,
|
|
|
1299 |
FT_UInt font_index,
|
|
|
1300 |
FT_Stream stream,
|
|
|
1301 |
FT_ULong base_offset,
|
|
|
1302 |
FT_Library library )
|
|
|
1303 |
{
|
|
|
1304 |
FT_Error error;
|
|
|
1305 |
CFF_ParserRec parser;
|
|
|
1306 |
FT_Byte* dict = NULL;
|
|
|
1307 |
FT_ULong dict_len;
|
|
|
1308 |
CFF_FontRecDict top = &font->font_dict;
|
|
|
1309 |
CFF_Private priv = &font->private_dict;
|
|
|
1310 |
|
|
|
1311 |
|
|
|
1312 |
cff_parser_init( &parser, CFF_CODE_TOPDICT, &font->font_dict, library );
|
|
|
1313 |
|
|
|
1314 |
/* set defaults */
|
|
|
1315 |
FT_MEM_ZERO( top, sizeof ( *top ) );
|
|
|
1316 |
|
|
|
1317 |
top->underline_position = -100L << 16;
|
|
|
1318 |
top->underline_thickness = 50L << 16;
|
|
|
1319 |
top->charstring_type = 2;
|
|
|
1320 |
top->font_matrix.xx = 0x10000L;
|
|
|
1321 |
top->font_matrix.yy = 0x10000L;
|
|
|
1322 |
top->cid_count = 8720;
|
|
|
1323 |
|
|
|
1324 |
/* we use the implementation specific SID value 0xFFFF to indicate */
|
|
|
1325 |
/* missing entries */
|
|
|
1326 |
top->version = 0xFFFFU;
|
|
|
1327 |
top->notice = 0xFFFFU;
|
|
|
1328 |
top->copyright = 0xFFFFU;
|
|
|
1329 |
top->full_name = 0xFFFFU;
|
|
|
1330 |
top->family_name = 0xFFFFU;
|
|
|
1331 |
top->weight = 0xFFFFU;
|
|
|
1332 |
top->embedded_postscript = 0xFFFFU;
|
|
|
1333 |
|
|
|
1334 |
top->cid_registry = 0xFFFFU;
|
|
|
1335 |
top->cid_ordering = 0xFFFFU;
|
|
|
1336 |
top->cid_font_name = 0xFFFFU;
|
|
|
1337 |
|
|
|
1338 |
error = cff_index_access_element( idx, font_index, &dict, &dict_len );
|
|
|
1339 |
if ( !error )
|
|
|
1340 |
error = cff_parser_run( &parser, dict, dict + dict_len );
|
|
|
1341 |
|
|
|
1342 |
cff_index_forget_element( idx, &dict );
|
|
|
1343 |
|
|
|
1344 |
if ( error )
|
|
|
1345 |
goto Exit;
|
|
|
1346 |
|
|
|
1347 |
/* if it is a CID font, we stop there */
|
|
|
1348 |
if ( top->cid_registry != 0xFFFFU )
|
|
|
1349 |
goto Exit;
|
|
|
1350 |
|
|
|
1351 |
/* parse the private dictionary, if any */
|
|
|
1352 |
if ( top->private_offset && top->private_size )
|
|
|
1353 |
{
|
|
|
1354 |
/* set defaults */
|
|
|
1355 |
FT_MEM_ZERO( priv, sizeof ( *priv ) );
|
|
|
1356 |
|
|
|
1357 |
priv->blue_shift = 7;
|
|
|
1358 |
priv->blue_fuzz = 1;
|
|
|
1359 |
priv->lenIV = -1;
|
|
|
1360 |
priv->expansion_factor = (FT_Fixed)( 0.06 * 0x10000L );
|
|
|
1361 |
priv->blue_scale = (FT_Fixed)( 0.039625 * 0x10000L * 1000 );
|
|
|
1362 |
|
|
|
1363 |
cff_parser_init( &parser, CFF_CODE_PRIVATE, priv, library );
|
|
|
1364 |
|
|
|
1365 |
if ( FT_STREAM_SEEK( base_offset + font->font_dict.private_offset ) ||
|
|
|
1366 |
FT_FRAME_ENTER( font->font_dict.private_size ) )
|
|
|
1367 |
goto Exit;
|
|
|
1368 |
|
|
|
1369 |
error = cff_parser_run( &parser,
|
|
|
1370 |
(FT_Byte*)stream->cursor,
|
|
|
1371 |
(FT_Byte*)stream->limit );
|
|
|
1372 |
FT_FRAME_EXIT();
|
|
|
1373 |
if ( error )
|
|
|
1374 |
goto Exit;
|
|
|
1375 |
|
|
|
1376 |
/* ensure that `num_blue_values' is even */
|
|
|
1377 |
priv->num_blue_values &= ~1;
|
|
|
1378 |
}
|
|
|
1379 |
|
|
|
1380 |
/* read the local subrs, if any */
|
|
|
1381 |
if ( priv->local_subrs_offset )
|
|
|
1382 |
{
|
|
|
1383 |
if ( FT_STREAM_SEEK( base_offset + top->private_offset +
|
|
|
1384 |
priv->local_subrs_offset ) )
|
|
|
1385 |
goto Exit;
|
|
|
1386 |
|
|
|
1387 |
error = cff_index_init( &font->local_subrs_index, stream, 1 );
|
|
|
1388 |
if ( error )
|
|
|
1389 |
goto Exit;
|
|
|
1390 |
|
|
|
1391 |
error = cff_index_get_pointers( &font->local_subrs_index,
|
|
|
1392 |
&font->local_subrs, NULL );
|
|
|
1393 |
if ( error )
|
|
|
1394 |
goto Exit;
|
|
|
1395 |
}
|
|
|
1396 |
|
|
|
1397 |
Exit:
|
|
|
1398 |
return error;
|
|
|
1399 |
}
|
|
|
1400 |
|
|
|
1401 |
|
|
|
1402 |
static void
|
|
|
1403 |
cff_subfont_done( FT_Memory memory,
|
|
|
1404 |
CFF_SubFont subfont )
|
|
|
1405 |
{
|
|
|
1406 |
if ( subfont )
|
|
|
1407 |
{
|
|
|
1408 |
cff_index_done( &subfont->local_subrs_index );
|
|
|
1409 |
FT_FREE( subfont->local_subrs );
|
|
|
1410 |
}
|
|
|
1411 |
}
|
|
|
1412 |
|
|
|
1413 |
|
|
|
1414 |
FT_LOCAL_DEF( FT_Error )
|
|
|
1415 |
cff_font_load( FT_Library library,
|
|
|
1416 |
FT_Stream stream,
|
|
|
1417 |
FT_Int face_index,
|
|
|
1418 |
CFF_Font font,
|
|
|
1419 |
FT_Bool pure_cff )
|
|
|
1420 |
{
|
|
|
1421 |
static const FT_Frame_Field cff_header_fields[] =
|
|
|
1422 |
{
|
|
|
1423 |
#undef FT_STRUCTURE
|
|
|
1424 |
#define FT_STRUCTURE CFF_FontRec
|
|
|
1425 |
|
|
|
1426 |
FT_FRAME_START( 4 ),
|
|
|
1427 |
FT_FRAME_BYTE( version_major ),
|
|
|
1428 |
FT_FRAME_BYTE( version_minor ),
|
|
|
1429 |
FT_FRAME_BYTE( header_size ),
|
|
|
1430 |
FT_FRAME_BYTE( absolute_offsize ),
|
|
|
1431 |
FT_FRAME_END
|
|
|
1432 |
};
|
|
|
1433 |
|
|
|
1434 |
FT_Error error;
|
|
|
1435 |
FT_Memory memory = stream->memory;
|
|
|
1436 |
FT_ULong base_offset;
|
|
|
1437 |
CFF_FontRecDict dict;
|
|
|
1438 |
CFF_IndexRec string_index;
|
|
|
1439 |
|
|
|
1440 |
|
|
|
1441 |
FT_ZERO( font );
|
|
|
1442 |
FT_ZERO( &string_index );
|
|
|
1443 |
|
|
|
1444 |
font->stream = stream;
|
|
|
1445 |
font->memory = memory;
|
|
|
1446 |
dict = &font->top_font.font_dict;
|
|
|
1447 |
base_offset = FT_STREAM_POS();
|
|
|
1448 |
|
|
|
1449 |
/* read CFF font header */
|
|
|
1450 |
if ( FT_STREAM_READ_FIELDS( cff_header_fields, font ) )
|
|
|
1451 |
goto Exit;
|
|
|
1452 |
|
|
|
1453 |
/* check format */
|
|
|
1454 |
if ( font->version_major != 1 ||
|
|
|
1455 |
font->header_size < 4 ||
|
|
|
1456 |
font->absolute_offsize > 4 )
|
|
|
1457 |
{
|
|
|
1458 |
FT_TRACE2(( "[not a CFF font header]\n" ));
|
|
|
1459 |
error = CFF_Err_Unknown_File_Format;
|
|
|
1460 |
goto Exit;
|
|
|
1461 |
}
|
|
|
1462 |
|
|
|
1463 |
/* skip the rest of the header */
|
|
|
1464 |
if ( FT_STREAM_SKIP( font->header_size - 4 ) )
|
|
|
1465 |
goto Exit;
|
|
|
1466 |
|
|
|
1467 |
/* read the name, top dict, string and global subrs index */
|
|
|
1468 |
if ( FT_SET_ERROR( cff_index_init( &font->name_index,
|
|
|
1469 |
stream, 0 ) ) ||
|
|
|
1470 |
FT_SET_ERROR( cff_index_init( &font->font_dict_index,
|
|
|
1471 |
stream, 0 ) ) ||
|
|
|
1472 |
FT_SET_ERROR( cff_index_init( &string_index,
|
|
|
1473 |
stream, 1 ) ) ||
|
|
|
1474 |
FT_SET_ERROR( cff_index_init( &font->global_subrs_index,
|
|
|
1475 |
stream, 1 ) ) ||
|
|
|
1476 |
FT_SET_ERROR( cff_index_get_pointers( &string_index,
|
|
|
1477 |
&font->strings,
|
|
|
1478 |
&font->string_pool ) ) )
|
|
|
1479 |
goto Exit;
|
|
|
1480 |
|
|
|
1481 |
font->num_strings = string_index.count;
|
|
|
1482 |
|
|
|
1483 |
/* well, we don't really forget the `disabled' fonts... */
|
|
|
1484 |
font->num_faces = font->name_index.count;
|
|
|
1485 |
if ( face_index >= (FT_Int)font->num_faces )
|
|
|
1486 |
{
|
|
|
1487 |
FT_ERROR(( "cff_font_load: incorrect face index = %d\n",
|
|
|
1488 |
face_index ));
|
|
|
1489 |
error = CFF_Err_Invalid_Argument;
|
|
|
1490 |
}
|
|
|
1491 |
|
|
|
1492 |
/* in case of a font format check, simply exit now */
|
|
|
1493 |
if ( face_index < 0 )
|
|
|
1494 |
goto Exit;
|
|
|
1495 |
|
|
|
1496 |
/* now, parse the top-level font dictionary */
|
|
|
1497 |
error = cff_subfont_load( &font->top_font,
|
|
|
1498 |
&font->font_dict_index,
|
|
|
1499 |
face_index,
|
|
|
1500 |
stream,
|
|
|
1501 |
base_offset,
|
|
|
1502 |
library );
|
|
|
1503 |
if ( error )
|
|
|
1504 |
goto Exit;
|
|
|
1505 |
|
|
|
1506 |
if ( FT_STREAM_SEEK( base_offset + dict->charstrings_offset ) )
|
|
|
1507 |
goto Exit;
|
|
|
1508 |
|
|
|
1509 |
error = cff_index_init( &font->charstrings_index, stream, 0 );
|
|
|
1510 |
if ( error )
|
|
|
1511 |
goto Exit;
|
|
|
1512 |
|
|
|
1513 |
/* now, check for a CID font */
|
|
|
1514 |
if ( dict->cid_registry != 0xFFFFU )
|
|
|
1515 |
{
|
|
|
1516 |
CFF_IndexRec fd_index;
|
|
|
1517 |
CFF_SubFont sub;
|
|
|
1518 |
FT_UInt idx;
|
|
|
1519 |
|
|
|
1520 |
|
|
|
1521 |
/* this is a CID-keyed font, we must now allocate a table of */
|
|
|
1522 |
/* sub-fonts, then load each of them separately */
|
|
|
1523 |
if ( FT_STREAM_SEEK( base_offset + dict->cid_fd_array_offset ) )
|
|
|
1524 |
goto Exit;
|
|
|
1525 |
|
|
|
1526 |
error = cff_index_init( &fd_index, stream, 0 );
|
|
|
1527 |
if ( error )
|
|
|
1528 |
goto Exit;
|
|
|
1529 |
|
|
|
1530 |
if ( fd_index.count > CFF_MAX_CID_FONTS )
|
|
|
1531 |
{
|
|
|
1532 |
FT_TRACE0(( "cff_font_load: FD array too large in CID font\n" ));
|
|
|
1533 |
goto Fail_CID;
|
|
|
1534 |
}
|
|
|
1535 |
|
|
|
1536 |
/* allocate & read each font dict independently */
|
|
|
1537 |
font->num_subfonts = fd_index.count;
|
|
|
1538 |
if ( FT_NEW_ARRAY( sub, fd_index.count ) )
|
|
|
1539 |
goto Fail_CID;
|
|
|
1540 |
|
|
|
1541 |
/* set up pointer table */
|
|
|
1542 |
for ( idx = 0; idx < fd_index.count; idx++ )
|
|
|
1543 |
font->subfonts[idx] = sub + idx;
|
|
|
1544 |
|
|
|
1545 |
/* now load each subfont independently */
|
|
|
1546 |
for ( idx = 0; idx < fd_index.count; idx++ )
|
|
|
1547 |
{
|
|
|
1548 |
sub = font->subfonts[idx];
|
|
|
1549 |
error = cff_subfont_load( sub, &fd_index, idx,
|
|
|
1550 |
stream, base_offset, library );
|
|
|
1551 |
if ( error )
|
|
|
1552 |
goto Fail_CID;
|
|
|
1553 |
}
|
|
|
1554 |
|
|
|
1555 |
/* now load the FD Select array */
|
|
|
1556 |
error = CFF_Load_FD_Select( &font->fd_select,
|
|
|
1557 |
font->charstrings_index.count,
|
|
|
1558 |
stream,
|
|
|
1559 |
base_offset + dict->cid_fd_select_offset );
|
|
|
1560 |
|
|
|
1561 |
Fail_CID:
|
|
|
1562 |
cff_index_done( &fd_index );
|
|
|
1563 |
|
|
|
1564 |
if ( error )
|
|
|
1565 |
goto Exit;
|
|
|
1566 |
}
|
|
|
1567 |
else
|
|
|
1568 |
font->num_subfonts = 0;
|
|
|
1569 |
|
|
|
1570 |
/* read the charstrings index now */
|
|
|
1571 |
if ( dict->charstrings_offset == 0 )
|
|
|
1572 |
{
|
|
|
1573 |
FT_ERROR(( "cff_font_load: no charstrings offset\n" ));
|
|
|
1574 |
error = CFF_Err_Unknown_File_Format;
|
|
|
1575 |
goto Exit;
|
|
|
1576 |
}
|
|
|
1577 |
|
|
|
1578 |
font->num_glyphs = font->charstrings_index.count;
|
|
|
1579 |
|
|
|
1580 |
error = cff_index_get_pointers( &font->global_subrs_index,
|
|
|
1581 |
&font->global_subrs, NULL );
|
|
|
1582 |
|
|
|
1583 |
if ( error )
|
|
|
1584 |
goto Exit;
|
|
|
1585 |
|
|
|
1586 |
/* read the Charset and Encoding tables if available */
|
|
|
1587 |
if ( font->num_glyphs > 0 )
|
|
|
1588 |
{
|
|
|
1589 |
FT_Bool invert = FT_BOOL( dict->cid_registry != 0xFFFFU && pure_cff );
|
|
|
1590 |
|
|
|
1591 |
|
|
|
1592 |
error = cff_charset_load( &font->charset, font->num_glyphs, stream,
|
|
|
1593 |
base_offset, dict->charset_offset, invert );
|
|
|
1594 |
if ( error )
|
|
|
1595 |
goto Exit;
|
|
|
1596 |
|
|
|
1597 |
/* CID-keyed CFFs don't have an encoding */
|
|
|
1598 |
if ( dict->cid_registry == 0xFFFFU )
|
|
|
1599 |
{
|
|
|
1600 |
error = cff_encoding_load( &font->encoding,
|
|
|
1601 |
&font->charset,
|
|
|
1602 |
font->num_glyphs,
|
|
|
1603 |
stream,
|
|
|
1604 |
base_offset,
|
|
|
1605 |
dict->encoding_offset );
|
|
|
1606 |
if ( error )
|
|
|
1607 |
goto Exit;
|
|
|
1608 |
}
|
|
|
1609 |
}
|
|
|
1610 |
|
|
|
1611 |
/* get the font name (/CIDFontName for CID-keyed fonts, */
|
|
|
1612 |
/* /FontName otherwise) */
|
|
|
1613 |
font->font_name = cff_index_get_name( font, face_index );
|
|
|
1614 |
|
|
|
1615 |
Exit:
|
|
|
1616 |
cff_index_done( &string_index );
|
|
|
1617 |
|
|
|
1618 |
return error;
|
|
|
1619 |
}
|
|
|
1620 |
|
|
|
1621 |
|
|
|
1622 |
FT_LOCAL_DEF( void )
|
|
|
1623 |
cff_font_done( CFF_Font font )
|
|
|
1624 |
{
|
|
|
1625 |
FT_Memory memory = font->memory;
|
|
|
1626 |
FT_UInt idx;
|
|
|
1627 |
|
|
|
1628 |
|
|
|
1629 |
cff_index_done( &font->global_subrs_index );
|
|
|
1630 |
cff_index_done( &font->font_dict_index );
|
|
|
1631 |
cff_index_done( &font->name_index );
|
|
|
1632 |
cff_index_done( &font->charstrings_index );
|
|
|
1633 |
|
|
|
1634 |
/* release font dictionaries, but only if working with */
|
|
|
1635 |
/* a CID keyed CFF font */
|
|
|
1636 |
if ( font->num_subfonts > 0 )
|
|
|
1637 |
{
|
|
|
1638 |
for ( idx = 0; idx < font->num_subfonts; idx++ )
|
|
|
1639 |
cff_subfont_done( memory, font->subfonts[idx] );
|
|
|
1640 |
|
|
|
1641 |
/* the subfonts array has been allocated as a single block */
|
|
|
1642 |
FT_FREE( font->subfonts[0] );
|
|
|
1643 |
}
|
|
|
1644 |
|
|
|
1645 |
cff_encoding_done( &font->encoding );
|
|
|
1646 |
cff_charset_done( &font->charset, font->stream );
|
|
|
1647 |
|
|
|
1648 |
cff_subfont_done( memory, &font->top_font );
|
|
|
1649 |
|
|
|
1650 |
CFF_Done_FD_Select( &font->fd_select, font->stream );
|
|
|
1651 |
|
|
|
1652 |
FT_FREE( font->font_info );
|
|
|
1653 |
|
|
|
1654 |
FT_FREE( font->font_name );
|
|
|
1655 |
FT_FREE( font->global_subrs );
|
|
|
1656 |
FT_FREE( font->strings );
|
|
|
1657 |
FT_FREE( font->string_pool );
|
|
|
1658 |
}
|
|
|
1659 |
|
|
|
1660 |
|
|
|
1661 |
/* END */
|