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
|
// Copyright 2015 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "core/fpdfapi/font/cpdf_tounicodemap.h"
#include "core/fpdfapi/parser/cpdf_stream.h"
#include "core/fxcrt/retain_ptr.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/base/span.h"
TEST(cpdf_tounicodemap, StringToCode) {
EXPECT_THAT(CPDF_ToUnicodeMap::StringToCode("<0001>"), testing::Optional(1u));
EXPECT_THAT(CPDF_ToUnicodeMap::StringToCode("<c2>"), testing::Optional(194u));
EXPECT_THAT(CPDF_ToUnicodeMap::StringToCode("<A2>"), testing::Optional(162u));
EXPECT_THAT(CPDF_ToUnicodeMap::StringToCode("<Af2>"),
testing::Optional(2802u));
EXPECT_THAT(CPDF_ToUnicodeMap::StringToCode("<FFFFFFFF>"),
testing::Optional(4294967295u));
// Integer overflow
EXPECT_FALSE(CPDF_ToUnicodeMap::StringToCode("<100000000>").has_value());
EXPECT_FALSE(CPDF_ToUnicodeMap::StringToCode("<1abcdFFFF>").has_value());
// Invalid string
EXPECT_FALSE(CPDF_ToUnicodeMap::StringToCode("").has_value());
EXPECT_FALSE(CPDF_ToUnicodeMap::StringToCode("<>").has_value());
EXPECT_FALSE(CPDF_ToUnicodeMap::StringToCode("12").has_value());
EXPECT_FALSE(CPDF_ToUnicodeMap::StringToCode("<12").has_value());
EXPECT_FALSE(CPDF_ToUnicodeMap::StringToCode("12>").has_value());
EXPECT_FALSE(CPDF_ToUnicodeMap::StringToCode("<1-7>").has_value());
EXPECT_FALSE(CPDF_ToUnicodeMap::StringToCode("00AB").has_value());
EXPECT_FALSE(CPDF_ToUnicodeMap::StringToCode("<00NN>").has_value());
}
TEST(cpdf_tounicodemap, StringToWideString) {
EXPECT_EQ(L"", CPDF_ToUnicodeMap::StringToWideString(""));
EXPECT_EQ(L"", CPDF_ToUnicodeMap::StringToWideString("1234"));
EXPECT_EQ(L"", CPDF_ToUnicodeMap::StringToWideString("<c2"));
EXPECT_EQ(L"", CPDF_ToUnicodeMap::StringToWideString("<c2D2"));
EXPECT_EQ(L"", CPDF_ToUnicodeMap::StringToWideString("c2ab>"));
WideString res = L"\xc2ab";
EXPECT_EQ(res, CPDF_ToUnicodeMap::StringToWideString("<c2ab>"));
EXPECT_EQ(res, CPDF_ToUnicodeMap::StringToWideString("<c2abab>"));
EXPECT_EQ(res, CPDF_ToUnicodeMap::StringToWideString("<c2ab 1234>"));
res += L"\xfaab";
EXPECT_EQ(res, CPDF_ToUnicodeMap::StringToWideString("<c2abFaAb>"));
EXPECT_EQ(res, CPDF_ToUnicodeMap::StringToWideString("<c2abFaAb12>"));
}
TEST(cpdf_tounicodemap, HandleBeginBFRangeAvoidIntegerOverflow) {
// Make sure there won't be infinite loops due to integer overflows in
// HandleBeginBFRange().
{
static constexpr uint8_t kInput1[] =
"beginbfrange<FFFFFFFF><FFFFFFFF>[<0041>]endbfrange";
auto stream = pdfium::MakeRetain<CPDF_Stream>();
stream->SetData(pdfium::make_span(kInput1));
CPDF_ToUnicodeMap map(stream);
EXPECT_STREQ(L"A", map.Lookup(0xffffffff).c_str());
}
{
static constexpr uint8_t kInput2[] =
"beginbfrange<FFFFFFFF><FFFFFFFF><0042>endbfrange";
auto stream = pdfium::MakeRetain<CPDF_Stream>();
stream->SetData(pdfium::make_span(kInput2));
CPDF_ToUnicodeMap map(stream);
EXPECT_STREQ(L"B", map.Lookup(0xffffffff).c_str());
}
{
static constexpr uint8_t kInput3[] =
"beginbfrange<FFFFFFFF><FFFFFFFF><00410042>endbfrange";
auto stream = pdfium::MakeRetain<CPDF_Stream>();
stream->SetData(pdfium::make_span(kInput3));
CPDF_ToUnicodeMap map(stream);
EXPECT_STREQ(L"AB", map.Lookup(0xffffffff).c_str());
}
}
TEST(cpdf_tounicodemap, InsertIntoMultimap) {
{
// Both the CIDs and the unicodes are different.
static constexpr uint8_t kInput1[] =
"beginbfchar<1><0041><2><0042>endbfchar";
auto stream = pdfium::MakeRetain<CPDF_Stream>();
stream->SetData(pdfium::make_span(kInput1));
CPDF_ToUnicodeMap map(stream);
EXPECT_EQ(1u, map.ReverseLookup(0x0041));
EXPECT_EQ(2u, map.ReverseLookup(0x0042));
EXPECT_EQ(1u, map.GetUnicodeCountByCharcodeForTesting(1u));
EXPECT_EQ(1u, map.GetUnicodeCountByCharcodeForTesting(2u));
}
{
// The same CID with different unicodes.
static constexpr uint8_t kInput2[] =
"beginbfrange<0><0><0041><0><0><0042>endbfrange";
auto stream = pdfium::MakeRetain<CPDF_Stream>();
stream->SetData(pdfium::make_span(kInput2));
CPDF_ToUnicodeMap map(stream);
EXPECT_EQ(0u, map.ReverseLookup(0x0041));
EXPECT_EQ(0u, map.ReverseLookup(0x0042));
EXPECT_EQ(2u, map.GetUnicodeCountByCharcodeForTesting(0u));
}
{
// Duplicate mappings of CID 0 to unicode "A". There should be only 1 entry
// in `m_Multimap`.
static constexpr uint8_t kInput3[] =
"beginbfrange<0><0>[<0041>]endbfrange\n"
"beginbfchar<0><0041>endbfchar";
auto stream = pdfium::MakeRetain<CPDF_Stream>();
stream->SetData(pdfium::make_span(kInput3));
CPDF_ToUnicodeMap map(stream);
EXPECT_EQ(0u, map.ReverseLookup(0x0041));
EXPECT_EQ(1u, map.GetUnicodeCountByCharcodeForTesting(0u));
}
}
|
