Charset.java
14.1 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
/*
* Decompiled with CFR 0_118.
*/
package com.adobe.fontengine.font.cff;
import com.adobe.fontengine.font.InvalidFontException;
import com.adobe.fontengine.font.Subset;
import com.adobe.fontengine.font.UnsupportedFontException;
import com.adobe.fontengine.font.cff.CFFByteArray;
final class Charset {
public final CFFByteArray data;
public final int offset;
public final int size;
private static final int[] isoAdobeCharset = new int[]{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228};
private static final int[] expertCharset = new int[]{0, 1, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 27, 28, 13, 14, 15, 99, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 266, 109, 110, 267, 268, 269, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298, 299, 300, 301, 302, 303, 304, 305, 306, 307, 308, 309, 310, 311, 312, 313, 314, 315, 316, 317, 318, 158, 155, 163, 319, 320, 321, 322, 323, 324, 325, 326, 150, 164, 169, 327, 328, 329, 330, 331, 332, 333, 334, 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, 345, 346, 347, 348, 349, 350, 351, 352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362, 363, 364, 365, 366, 367, 368, 369, 370, 371, 372, 373, 374, 375, 376, 377, 378};
private static final int[] expertSubsetCharset = new int[]{0, 1, 231, 232, 235, 236, 237, 238, 13, 14, 15, 99, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 27, 28, 249, 250, 251, 253, 254, 255, 256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 266, 109, 110, 267, 268, 269, 270, 272, 300, 301, 302, 305, 314, 315, 158, 155, 163, 320, 321, 322, 323, 324, 325, 326, 150, 164, 169, 327, 328, 329, 330, 331, 332, 333, 334, 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, 345, 346};
Charset(CFFByteArray data, int offset, int numGlyphs) throws InvalidFontException {
this.data = offset < 3 ? null : data;
this.offset = offset;
this.size = this.size(numGlyphs);
}
Charset(CFFByteArray data) {
this.data = data;
this.offset = 0;
this.size = data.getSize();
}
static Charset identityCharset(int numGlyphs) {
CFFByteArray.CFFByteArrayBuilder bb;
if ((numGlyphs -= 2) > 255) {
bb = CFFByteArray.getCFFByteArrayBuilderInstance(5);
bb.addCard8(2);
bb.addCard16(1);
bb.addCard16(numGlyphs);
} else {
bb = CFFByteArray.getCFFByteArrayBuilderInstance(4);
bb.addCard8(1);
bb.addCard16(1);
bb.addCard8(numGlyphs);
}
return new Charset(bb.toCFFByteArray());
}
private static Charset format0Generator(Charset sourceCharset, Subset subset) throws UnsupportedFontException, InvalidFontException {
CFFByteArray.CFFByteArrayBuilder bb = CFFByteArray.getCFFByteArrayBuilderInstance(1 + 2 * (subset.getNumGlyphs() - 1));
bb.addCard8(0);
for (int i = 1; i < subset.getNumGlyphs(); ++i) {
bb.addCard16(sourceCharset.gid2sid(subset.getFullGid(i)));
}
return new Charset(bb.toCFFByteArray());
}
private static Charset format1Generator(Charset sourceCharset, Subset subset, int numRanges) throws UnsupportedFontException, InvalidFontException {
CFFByteArray.CFFByteArrayBuilder bb = CFFByteArray.getCFFByteArrayBuilderInstance(1 + 3 * numRanges);
bb.addCard8(1);
int currEntries = 0;
int lastSid = sourceCharset.gid2sid(subset.getFullGid(1));
bb.addCard16(lastSid);
for (int i = 2; i < subset.getNumGlyphs(); ++i) {
int thisSid = sourceCharset.gid2sid(subset.getFullGid(i));
if (currEntries == 255 || thisSid != lastSid + 1) {
bb.addCard8(currEntries);
currEntries = 0;
bb.addCard16(thisSid);
} else {
++currEntries;
}
lastSid = thisSid;
}
bb.addCard8(currEntries);
return new Charset(bb.toCFFByteArray());
}
private static Charset format2Generator(Charset sourceCharset, Subset subset, int numRanges) throws UnsupportedFontException, InvalidFontException {
CFFByteArray.CFFByteArrayBuilder bb = CFFByteArray.getCFFByteArrayBuilderInstance(1 + 3 * numRanges);
bb.addCard8(2);
int currEntries = 0;
int lastSid = sourceCharset.gid2sid(subset.getFullGid(1));
bb.addCard16(lastSid);
for (int i = 2; i < subset.getNumGlyphs(); ++i) {
int thisSid = sourceCharset.gid2sid(subset.getFullGid(i));
if (thisSid != lastSid + 1) {
bb.addCard16(currEntries);
currEntries = 0;
bb.addCard16(thisSid);
} else {
++currEntries;
}
lastSid = thisSid;
}
bb.addCard8(currEntries);
return new Charset(bb.toCFFByteArray());
}
static Charset charSetFromSubset(Charset sourceCharset, Subset subset) throws InvalidFontException, UnsupportedFontException {
int numGlyphs = subset.getNumGlyphs();
int format0Size = 2 * numGlyphs;
int numRange1 = 1;
int numRange2 = 1;
int currRange1Entries = 0;
if (numGlyphs > 1) {
int lastSid = sourceCharset.gid2sid(subset.getFullGid(1));
for (int i = 2; i < numGlyphs; ++i) {
int thisSid = sourceCharset.gid2sid(subset.getFullGid(i));
if (currRange1Entries == 255 || thisSid != lastSid + 1) {
++numRange1;
currRange1Entries = 0;
} else {
++currRange1Entries;
}
if (thisSid != lastSid + 1) {
++numRange2;
}
lastSid = thisSid;
}
}
int format1Size = 3 * numRange1;
int format2Size = 4 * numRange2;
if (format0Size <= format1Size) {
if (format0Size <= format2Size) {
return Charset.format0Generator(sourceCharset, subset);
}
return Charset.format2Generator(sourceCharset, subset, numRange2);
}
if (format1Size <= format2Size) {
return Charset.format1Generator(sourceCharset, subset, numRange1);
}
return Charset.format2Generator(sourceCharset, subset, numRange2);
}
public int gid2sid(int gid) throws InvalidFontException, UnsupportedFontException {
if (gid == 0) {
return 0;
}
if (this.data == null) {
if (this.offset == 0) {
return isoAdobeCharset[gid];
}
if (this.offset == 1) {
return expertCharset[gid];
}
if (this.offset == 2) {
return expertSubsetCharset[gid];
}
throw new InvalidFontException("invalid charset offset (" + this.offset + ")");
}
int o = this.offset;
int format = this.data.getcard8(o);
++o;
switch (format) {
case 0: {
return this.data.getcard16(o + 2 * (gid - 1));
}
case 1: {
int currentGid = 1;
while (o < this.offset + this.size) {
int currentSID = this.data.getcard16(o);
int nLeft = this.data.getcard8(o += 2);
++o;
if (currentGid <= gid && gid <= currentGid + nLeft) {
return currentSID + (gid - currentGid);
}
currentGid += nLeft + 1;
}
return -1;
}
case 2: {
int currentGid = 1;
while (o < this.offset + this.size) {
int currentSID = this.data.getcard16(o);
int nLeft = this.data.getcard16(o += 2);
o += 2;
if (currentGid <= gid && gid <= currentGid + nLeft) {
return currentSID + (gid - currentGid);
}
currentGid += nLeft + 1;
}
return -1;
}
}
throw new UnsupportedFontException("CFF charset in format " + format);
}
public int sid2gid(int sid) throws InvalidFontException, UnsupportedFontException {
if (sid == 0) {
return 0;
}
if (this.data == null) {
if (this.offset == 0) {
for (int gid = 0; gid < isoAdobeCharset.length; ++gid) {
if (isoAdobeCharset[gid] != sid) continue;
return gid;
}
return -1;
}
if (this.offset == 1) {
for (int gid = 0; gid < expertCharset.length; ++gid) {
if (expertCharset[gid] != sid) continue;
return gid;
}
return -1;
}
if (this.offset == 2) {
for (int gid = 0; gid < expertSubsetCharset.length; ++gid) {
if (expertSubsetCharset[gid] != sid) continue;
return gid;
}
return -1;
}
throw new InvalidFontException("invalid charset offset (" + this.offset + ")");
}
int o = this.offset;
int format = this.data.getcard8(o);
++o;
switch (format) {
case 0: {
int gid = 1;
while (o < this.offset + this.size) {
if (this.data.getcard16(o) == sid) {
return gid;
}
o += 2;
++gid;
}
return -1;
}
case 1: {
int currentGid = 1;
while (o < this.offset + this.size) {
int currentSid = this.data.getcard16(o);
int nLeft = this.data.getcard8(o += 2);
++o;
if (currentSid <= sid && sid <= currentSid + nLeft) {
return currentGid + (sid - currentSid);
}
currentGid += nLeft + 1;
}
return -1;
}
case 2: {
int currentGid = 1;
while (o < this.offset + this.size) {
int currentSid = this.data.getcard16(o);
int nLeft = this.data.getcard16(o += 2);
o += 2;
if (currentSid <= sid && sid <= currentSid + nLeft) {
return currentGid + (sid - currentSid);
}
currentGid += nLeft + 1;
}
return -1;
}
}
throw new UnsupportedFontException("CFF charset in format " + format);
}
int size(int numGlyphs) throws InvalidFontException {
if (this.offset < 3) {
return 0;
}
int o = this.offset;
int format = this.data.getcard8(o);
++o;
switch (format) {
case 0: {
return 1 + 2 * numGlyphs;
}
case 1: {
int nLeft;
for (int currentGlyphID = 1; currentGlyphID < numGlyphs; currentGlyphID += nLeft + 1) {
nLeft = this.data.getcard8(o += 2);
++o;
}
break;
}
case 2: {
int nLeft;
for (int currentGlyphID = 1; currentGlyphID < numGlyphs; currentGlyphID += nLeft + 1) {
nLeft = this.data.getcard16(o += 2);
o += 2;
}
break;
}
}
return o - this.offset;
}
public int predefinedOffset() {
if (this.data == null) {
return this.offset;
}
return -1;
}
public void stream(CFFByteArray.CFFByteArrayBuilder bb) throws InvalidFontException {
if (this.data != null) {
bb.addBytes(this.data, this.offset, this.size);
}
}
static void streamCharSet(CFFByteArray.CFFByteArrayBuilder bb, int[] glyphSids) {
int j;
int format0Size = (glyphSids.length - 1) * 2;
int format2Size = 0;
int i = 1;
while (i < glyphSids.length && (format2Size += 4) < format0Size) {
for (j = i + 1; j < glyphSids.length && glyphSids[j] == glyphSids[j - 1] + 1; ++j) {
}
i = j;
}
if (format2Size < format0Size) {
bb.addCard8(2);
i = 1;
while (i < glyphSids.length) {
int nleft = 0;
bb.addCard16(glyphSids[i]);
for (j = i + 1; j < glyphSids.length && glyphSids[j] == glyphSids[j - 1] + 1; ++j) {
++nleft;
}
bb.addCard16(nleft);
i = j;
}
} else {
bb.addCard8(0);
for (i = 1; i < glyphSids.length; ++i) {
bb.addCard16(glyphSids[i]);
}
}
}
}