| // Copyright 2016 PDFium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <limits> |
| #include <string> |
| |
| #include "core/fpdfapi/parser/cpdf_parser.h" |
| #include "core/fpdfapi/parser/cpdf_syntax_parser.h" |
| #include "core/fxcrt/fx_ext.h" |
| #include "core/fxcrt/fx_stream.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| #include "testing/utils/path_service.h" |
| |
| TEST(cpdf_syntax_parser, ReadHexString) { |
| { |
| // Empty string. |
| uint8_t data[] = ""; |
| ScopedFileStream stream(FX_CreateMemoryStream(data, 0, FALSE)); |
| |
| CPDF_SyntaxParser parser; |
| parser.InitParser(stream.get(), 0); |
| EXPECT_EQ("", parser.ReadHexString()); |
| EXPECT_EQ(0, parser.SavePos()); |
| } |
| |
| { |
| // Blank string. |
| uint8_t data[] = " "; |
| ScopedFileStream stream(FX_CreateMemoryStream(data, 2, FALSE)); |
| |
| CPDF_SyntaxParser parser; |
| parser.InitParser(stream.get(), 0); |
| EXPECT_EQ("", parser.ReadHexString()); |
| EXPECT_EQ(2, parser.SavePos()); |
| } |
| |
| { |
| // Skips unknown characters. |
| uint8_t data[] = "z12b"; |
| ScopedFileStream stream(FX_CreateMemoryStream(data, 4, FALSE)); |
| |
| CPDF_SyntaxParser parser; |
| parser.InitParser(stream.get(), 0); |
| EXPECT_EQ("\x12\xb0", parser.ReadHexString()); |
| EXPECT_EQ(4, parser.SavePos()); |
| } |
| |
| { |
| // Skips unknown characters. |
| uint8_t data[] = "*<&*#$^&@1"; |
| ScopedFileStream stream(FX_CreateMemoryStream(data, 10, FALSE)); |
| |
| CPDF_SyntaxParser parser; |
| parser.InitParser(stream.get(), 0); |
| EXPECT_EQ("\x10", parser.ReadHexString()); |
| EXPECT_EQ(10, parser.SavePos()); |
| } |
| |
| { |
| // Skips unknown characters. |
| uint8_t data[] = "\x80zab"; |
| ScopedFileStream stream(FX_CreateMemoryStream(data, 4, FALSE)); |
| |
| CPDF_SyntaxParser parser; |
| parser.InitParser(stream.get(), 0); |
| EXPECT_EQ("\xab", parser.ReadHexString()); |
| EXPECT_EQ(4, parser.SavePos()); |
| } |
| |
| { |
| // Skips unknown characters. |
| uint8_t data[] = "\xffzab"; |
| ScopedFileStream stream(FX_CreateMemoryStream(data, 4, FALSE)); |
| |
| CPDF_SyntaxParser parser; |
| parser.InitParser(stream.get(), 0); |
| EXPECT_EQ("\xab", parser.ReadHexString()); |
| EXPECT_EQ(4, parser.SavePos()); |
| } |
| |
| { |
| // Regular conversion. |
| uint8_t data[] = "1A2b>abcd"; |
| ScopedFileStream stream(FX_CreateMemoryStream(data, 9, FALSE)); |
| |
| CPDF_SyntaxParser parser; |
| parser.InitParser(stream.get(), 0); |
| EXPECT_EQ("\x1a\x2b", parser.ReadHexString()); |
| EXPECT_EQ(5, parser.SavePos()); |
| } |
| |
| { |
| // Position out of bounds. |
| uint8_t data[] = "12ab>"; |
| ScopedFileStream stream(FX_CreateMemoryStream(data, 5, FALSE)); |
| |
| CPDF_SyntaxParser parser; |
| parser.InitParser(stream.get(), 0); |
| parser.RestorePos(5); |
| EXPECT_EQ("", parser.ReadHexString()); |
| |
| parser.RestorePos(6); |
| EXPECT_EQ("", parser.ReadHexString()); |
| |
| parser.RestorePos(-1); |
| EXPECT_EQ("", parser.ReadHexString()); |
| |
| parser.RestorePos(std::numeric_limits<FX_FILESIZE>::max()); |
| EXPECT_EQ("", parser.ReadHexString()); |
| |
| // Check string still parses when set to 0. |
| parser.RestorePos(0); |
| EXPECT_EQ("\x12\xab", parser.ReadHexString()); |
| } |
| |
| { |
| // Missing ending >. |
| uint8_t data[] = "1A2b"; |
| ScopedFileStream stream(FX_CreateMemoryStream(data, 4, FALSE)); |
| |
| CPDF_SyntaxParser parser; |
| parser.InitParser(stream.get(), 0); |
| EXPECT_EQ("\x1a\x2b", parser.ReadHexString()); |
| EXPECT_EQ(4, parser.SavePos()); |
| } |
| |
| { |
| // Missing ending >. |
| uint8_t data[] = "12abz"; |
| ScopedFileStream stream(FX_CreateMemoryStream(data, 5, FALSE)); |
| |
| CPDF_SyntaxParser parser; |
| parser.InitParser(stream.get(), 0); |
| EXPECT_EQ("\x12\xab", parser.ReadHexString()); |
| EXPECT_EQ(5, parser.SavePos()); |
| } |
| |
| { |
| // Uneven number of bytes. |
| uint8_t data[] = "1A2>asdf"; |
| ScopedFileStream stream(FX_CreateMemoryStream(data, 8, FALSE)); |
| |
| CPDF_SyntaxParser parser; |
| parser.InitParser(stream.get(), 0); |
| EXPECT_EQ("\x1a\x20", parser.ReadHexString()); |
| EXPECT_EQ(4, parser.SavePos()); |
| } |
| |
| { |
| // Uneven number of bytes. |
| uint8_t data[] = "1A2zasdf"; |
| ScopedFileStream stream(FX_CreateMemoryStream(data, 8, FALSE)); |
| |
| CPDF_SyntaxParser parser; |
| parser.InitParser(stream.get(), 0); |
| EXPECT_EQ("\x1a\x2a\xdf", parser.ReadHexString()); |
| EXPECT_EQ(8, parser.SavePos()); |
| } |
| |
| { |
| // Just ending character. |
| uint8_t data[] = ">"; |
| ScopedFileStream stream(FX_CreateMemoryStream(data, 1, FALSE)); |
| |
| CPDF_SyntaxParser parser; |
| parser.InitParser(stream.get(), 0); |
| EXPECT_EQ("", parser.ReadHexString()); |
| EXPECT_EQ(1, parser.SavePos()); |
| } |
| } |