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1 // Copyright 2016 PDFium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include <limits> | |
6 #include <string> | |
7 | |
8 #include "core/fpdfapi/fpdf_parser/cpdf_parser.h" | |
9 #include "core/fpdfapi/fpdf_parser/cpdf_syntax_parser.h" | |
10 #include "core/fxcrt/fx_ext.h" | |
11 #include "core/fxcrt/fx_stream.h" | |
12 #include "testing/gtest/include/gtest/gtest.h" | |
13 #include "testing/utils/path_service.h" | |
14 | |
15 TEST(cpdf_syntax_parser, ReadHexString) { | |
16 { | |
17 // Empty string. | |
18 uint8_t data[] = ""; | |
19 ScopedFileStream stream(FX_CreateMemoryStream(data, 0, FALSE)); | |
20 | |
21 CPDF_SyntaxParser parser; | |
22 parser.InitParser(stream.get(), 0); | |
23 EXPECT_EQ("", parser.ReadHexString()); | |
24 EXPECT_EQ(0, parser.SavePos()); | |
25 } | |
26 | |
27 { | |
28 // Blank string. | |
29 uint8_t data[] = " "; | |
30 ScopedFileStream stream(FX_CreateMemoryStream(data, 2, FALSE)); | |
31 | |
32 CPDF_SyntaxParser parser; | |
33 parser.InitParser(stream.get(), 0); | |
34 EXPECT_EQ("", parser.ReadHexString()); | |
35 EXPECT_EQ(2, parser.SavePos()); | |
36 } | |
37 | |
38 { | |
39 // Skips unknown characters. | |
40 uint8_t data[] = "z12b"; | |
41 ScopedFileStream stream(FX_CreateMemoryStream(data, 4, FALSE)); | |
42 | |
43 CPDF_SyntaxParser parser; | |
44 parser.InitParser(stream.get(), 0); | |
45 EXPECT_EQ("\x12\xb0", parser.ReadHexString()); | |
46 EXPECT_EQ(4, parser.SavePos()); | |
47 } | |
48 | |
49 { | |
50 // Skips unknown characters. | |
51 uint8_t data[] = "*<&*#$^&@1"; | |
52 ScopedFileStream stream(FX_CreateMemoryStream(data, 10, FALSE)); | |
53 | |
54 CPDF_SyntaxParser parser; | |
55 parser.InitParser(stream.get(), 0); | |
56 EXPECT_EQ("\x10", parser.ReadHexString()); | |
57 EXPECT_EQ(10, parser.SavePos()); | |
58 } | |
59 | |
60 { | |
61 // Skips unknown characters. | |
62 uint8_t data[] = "\x80zab"; | |
63 ScopedFileStream stream(FX_CreateMemoryStream(data, 4, FALSE)); | |
64 | |
65 CPDF_SyntaxParser parser; | |
66 parser.InitParser(stream.get(), 0); | |
67 EXPECT_EQ("\xab", parser.ReadHexString()); | |
68 EXPECT_EQ(4, parser.SavePos()); | |
69 } | |
70 | |
71 { | |
72 // Skips unknown characters. | |
73 uint8_t data[] = "\xffzab"; | |
74 ScopedFileStream stream(FX_CreateMemoryStream(data, 4, FALSE)); | |
75 | |
76 CPDF_SyntaxParser parser; | |
77 parser.InitParser(stream.get(), 0); | |
78 EXPECT_EQ("\xab", parser.ReadHexString()); | |
79 EXPECT_EQ(4, parser.SavePos()); | |
80 } | |
81 | |
82 { | |
83 // Regular conversion. | |
84 uint8_t data[] = "1A2b>abcd"; | |
85 ScopedFileStream stream(FX_CreateMemoryStream(data, 9, FALSE)); | |
86 | |
87 CPDF_SyntaxParser parser; | |
88 parser.InitParser(stream.get(), 0); | |
89 EXPECT_EQ("\x1a\x2b", parser.ReadHexString()); | |
90 EXPECT_EQ(5, parser.SavePos()); | |
91 } | |
92 | |
93 { | |
94 // Position out of bounds. | |
95 uint8_t data[] = "12ab>"; | |
96 ScopedFileStream stream(FX_CreateMemoryStream(data, 5, FALSE)); | |
97 | |
98 CPDF_SyntaxParser parser; | |
99 parser.InitParser(stream.get(), 0); | |
100 parser.RestorePos(5); | |
101 EXPECT_EQ("", parser.ReadHexString()); | |
102 | |
103 parser.RestorePos(6); | |
104 EXPECT_EQ("", parser.ReadHexString()); | |
105 | |
106 parser.RestorePos(-1); | |
107 EXPECT_EQ("", parser.ReadHexString()); | |
108 | |
109 parser.RestorePos(std::numeric_limits<FX_FILESIZE>::max()); | |
110 EXPECT_EQ("", parser.ReadHexString()); | |
111 | |
112 // Check string still parses when set to 0. | |
113 parser.RestorePos(0); | |
114 EXPECT_EQ("\x12\xab", parser.ReadHexString()); | |
115 } | |
116 | |
117 { | |
118 // Missing ending >. | |
119 uint8_t data[] = "1A2b"; | |
120 ScopedFileStream stream(FX_CreateMemoryStream(data, 4, FALSE)); | |
121 | |
122 CPDF_SyntaxParser parser; | |
123 parser.InitParser(stream.get(), 0); | |
124 EXPECT_EQ("\x1a\x2b", parser.ReadHexString()); | |
125 EXPECT_EQ(4, parser.SavePos()); | |
126 } | |
127 | |
128 { | |
129 // Missing ending >. | |
130 uint8_t data[] = "12abz"; | |
131 ScopedFileStream stream(FX_CreateMemoryStream(data, 5, FALSE)); | |
132 | |
133 CPDF_SyntaxParser parser; | |
134 parser.InitParser(stream.get(), 0); | |
135 EXPECT_EQ("\x12\xab", parser.ReadHexString()); | |
136 EXPECT_EQ(5, parser.SavePos()); | |
137 } | |
138 | |
139 { | |
140 // Uneven number of bytes. | |
141 uint8_t data[] = "1A2>asdf"; | |
142 ScopedFileStream stream(FX_CreateMemoryStream(data, 8, FALSE)); | |
143 | |
144 CPDF_SyntaxParser parser; | |
145 parser.InitParser(stream.get(), 0); | |
146 EXPECT_EQ("\x1a\x20", parser.ReadHexString()); | |
147 EXPECT_EQ(4, parser.SavePos()); | |
148 } | |
149 | |
150 { | |
151 // Uneven number of bytes. | |
152 uint8_t data[] = "1A2zasdf"; | |
153 ScopedFileStream stream(FX_CreateMemoryStream(data, 8, FALSE)); | |
154 | |
155 CPDF_SyntaxParser parser; | |
156 parser.InitParser(stream.get(), 0); | |
157 EXPECT_EQ("\x1a\x2a\xdf", parser.ReadHexString()); | |
158 EXPECT_EQ(8, parser.SavePos()); | |
159 } | |
160 | |
161 { | |
162 // Just ending character. | |
163 uint8_t data[] = ">"; | |
164 ScopedFileStream stream(FX_CreateMemoryStream(data, 1, FALSE)); | |
165 | |
166 CPDF_SyntaxParser parser; | |
167 parser.InitParser(stream.get(), 0); | |
168 EXPECT_EQ("", parser.ReadHexString()); | |
169 EXPECT_EQ(1, parser.SavePos()); | |
170 } | |
171 } | |
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