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
|
/*
* Copyright 2010 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "Test.h"
#ifdef SK_SUPPORT_PDF
#include "SkBitSet.h"
#include "SkData.h"
#include "SkPDFMakeToUnicodeCmap.h"
#include "SkStream.h"
static const int kMaximumGlyphCount = SK_MaxU16 + 1;
static bool stream_equals(const SkDynamicMemoryWStream& stream, size_t offset,
const char* buffer, size_t len) {
if (len != strlen(buffer)) {
return false;
}
const size_t streamSize = stream.bytesWritten();
if (offset + len > streamSize) {
return false;
}
SkAutoTMalloc<char> data(streamSize);
stream.copyTo(data.get());
return memcmp(data.get() + offset, buffer, len) == 0;
}
DEF_TEST(SkPDF_ToUnicode, reporter) {
SkTDArray<SkUnichar> glyphToUnicode;
SkTDArray<uint16_t> glyphsInSubset;
SkBitSet subset(kMaximumGlyphCount);
glyphToUnicode.push(0); // 0
glyphToUnicode.push(0); // 1
glyphToUnicode.push(0); // 2
glyphsInSubset.push(3);
glyphToUnicode.push(0x20); // 3
glyphsInSubset.push(4);
glyphToUnicode.push(0x25); // 4
glyphsInSubset.push(5);
glyphToUnicode.push(0x27); // 5
glyphsInSubset.push(6);
glyphToUnicode.push(0x28); // 6
glyphsInSubset.push(7);
glyphToUnicode.push(0x29); // 7
glyphsInSubset.push(8);
glyphToUnicode.push(0x2F); // 8
glyphsInSubset.push(9);
glyphToUnicode.push(0x33); // 9
glyphToUnicode.push(0); // 10
glyphsInSubset.push(11);
glyphToUnicode.push(0x35); // 11
glyphsInSubset.push(12);
glyphToUnicode.push(0x36); // 12
glyphsInSubset.push(13);
glyphToUnicode.push(0x37); // 13
for (uint16_t i = 14; i < 0xFE; ++i) {
glyphToUnicode.push(0); // Zero from index 0x9 to 0xFD
}
glyphsInSubset.push(0xFE);
glyphToUnicode.push(0x1010);
glyphsInSubset.push(0xFF);
glyphToUnicode.push(0x1011);
glyphsInSubset.push(0x100);
glyphToUnicode.push(0x1012);
glyphsInSubset.push(0x101);
glyphToUnicode.push(0x1013);
SkDynamicMemoryWStream buffer;
subset.setAll(glyphsInSubset.begin(), glyphsInSubset.count());
SkPDFAppendCmapSections(glyphToUnicode, &subset, &buffer, true, 0, 0xFFFF);
char expectedResult[] =
"4 beginbfchar\n\
<0003> <0020>\n\
<0004> <0025>\n\
<0008> <002F>\n\
<0009> <0033>\n\
endbfchar\n\
4 beginbfrange\n\
<0005> <0007> <0027>\n\
<000B> <000D> <0035>\n\
<00FE> <00FF> <1010>\n\
<0100> <0101> <1012>\n\
endbfrange\n";
REPORTER_ASSERT(reporter, stream_equals(buffer, 0, expectedResult,
buffer.bytesWritten()));
// Remove characters and ranges.
buffer.reset();
SkPDFAppendCmapSections(glyphToUnicode, &subset, &buffer, true, 8, 0x00FF);
char expectedResultChop1[] =
"2 beginbfchar\n\
<0008> <002F>\n\
<0009> <0033>\n\
endbfchar\n\
2 beginbfrange\n\
<000B> <000D> <0035>\n\
<00FE> <00FF> <1010>\n\
endbfrange\n";
REPORTER_ASSERT(reporter, stream_equals(buffer, 0, expectedResultChop1,
buffer.bytesWritten()));
// Remove characters from range to downdrade it to one char.
buffer.reset();
SkPDFAppendCmapSections(glyphToUnicode, &subset, &buffer, true, 0x00D, 0x00FE);
char expectedResultChop2[] =
"2 beginbfchar\n\
<000D> <0037>\n\
<00FE> <1010>\n\
endbfchar\n";
REPORTER_ASSERT(reporter, stream_equals(buffer, 0, expectedResultChop2,
buffer.bytesWritten()));
buffer.reset();
SkPDFAppendCmapSections(glyphToUnicode, nullptr, &buffer, false, 0xFC, 0x110);
char expectedResultSingleBytes[] =
"2 beginbfchar\n\
<01> <0000>\n\
<02> <0000>\n\
endbfchar\n\
1 beginbfrange\n\
<03> <06> <1010>\n\
endbfrange\n";
REPORTER_ASSERT(reporter, stream_equals(buffer, 0,
expectedResultSingleBytes,
buffer.bytesWritten()));
glyphToUnicode.reset();
glyphsInSubset.reset();
SkBitSet subset2(kMaximumGlyphCount);
// Test mapping:
// I n s t a l
// Glyph id 2c 51 56 57 44 4f
// Unicode 49 6e 73 74 61 6c
for (SkUnichar i = 0; i < 100; ++i) {
glyphToUnicode.push(i + 29);
}
glyphsInSubset.push(0x2C);
glyphsInSubset.push(0x44);
glyphsInSubset.push(0x4F);
glyphsInSubset.push(0x51);
glyphsInSubset.push(0x56);
glyphsInSubset.push(0x57);
SkDynamicMemoryWStream buffer2;
subset2.setAll(glyphsInSubset.begin(), glyphsInSubset.count());
SkPDFAppendCmapSections(glyphToUnicode, &subset2, &buffer2, true, 0, 0xffff);
char expectedResult2[] =
"4 beginbfchar\n\
<002C> <0049>\n\
<0044> <0061>\n\
<004F> <006C>\n\
<0051> <006E>\n\
endbfchar\n\
1 beginbfrange\n\
<0056> <0057> <0073>\n\
endbfrange\n";
REPORTER_ASSERT(reporter, stream_equals(buffer2, 0, expectedResult2,
buffer2.bytesWritten()));
}
#endif
|
