blob: c176f189afc445535c6d0ca09337f964ac55259f [file] [log] [blame]
// Copyright 2016 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <limits>
#include "core/fpdfapi/parser/cpdf_object.h"
#include "core/fpdfapi/parser/cpdf_parser.h"
#include "core/fpdfapi/parser/cpdf_syntax_parser.h"
#include "core/fxcrt/cfx_read_only_span_stream.h"
#include "core/fxcrt/fx_extension.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/utils/path_service.h"
TEST(SyntaxParserTest, ReadHexString) {
{
// Empty string.
static const uint8_t data[] = "";
CPDF_SyntaxParser parser(pdfium::MakeRetain<CFX_ReadOnlySpanStream>(
pdfium::make_span(data, 0u)));
EXPECT_EQ("", parser.ReadHexString());
EXPECT_EQ(0, parser.GetPos());
}
{
// Blank string.
static const uint8_t data[] = " ";
CPDF_SyntaxParser parser(pdfium::MakeRetain<CFX_ReadOnlySpanStream>(
pdfium::make_span(data, 2u)));
EXPECT_EQ("", parser.ReadHexString());
EXPECT_EQ(2, parser.GetPos());
}
{
// Skips unknown characters.
static const uint8_t data[] = "z12b";
CPDF_SyntaxParser parser(pdfium::MakeRetain<CFX_ReadOnlySpanStream>(
pdfium::make_span(data, 4u)));
EXPECT_EQ("\x12\xb0", parser.ReadHexString());
EXPECT_EQ(4, parser.GetPos());
}
{
// Skips unknown characters.
static const uint8_t data[] = "*<&*#$^&@1";
CPDF_SyntaxParser parser(pdfium::MakeRetain<CFX_ReadOnlySpanStream>(
pdfium::make_span(data, 10u)));
EXPECT_EQ("\x10", parser.ReadHexString());
EXPECT_EQ(10, parser.GetPos());
}
{
// Skips unknown characters.
static const uint8_t data[] = "\x80zab";
CPDF_SyntaxParser parser(pdfium::MakeRetain<CFX_ReadOnlySpanStream>(
pdfium::make_span(data, 4u)));
EXPECT_EQ("\xab", parser.ReadHexString());
EXPECT_EQ(4, parser.GetPos());
}
{
// Skips unknown characters.
static const uint8_t data[] = "\xffzab";
CPDF_SyntaxParser parser(pdfium::MakeRetain<CFX_ReadOnlySpanStream>(
pdfium::make_span(data, 4u)));
EXPECT_EQ("\xab", parser.ReadHexString());
EXPECT_EQ(4, parser.GetPos());
}
{
// Regular conversion.
static const uint8_t data[] = "1A2b>abcd";
CPDF_SyntaxParser parser(pdfium::MakeRetain<CFX_ReadOnlySpanStream>(
pdfium::make_span(data, 9u)));
EXPECT_EQ("\x1a\x2b", parser.ReadHexString());
EXPECT_EQ(5, parser.GetPos());
}
{
// Position out of bounds.
static const uint8_t data[] = "12ab>";
CPDF_SyntaxParser parser(pdfium::MakeRetain<CFX_ReadOnlySpanStream>(
pdfium::make_span(data, 5u)));
parser.SetPos(5);
EXPECT_EQ("", parser.ReadHexString());
parser.SetPos(6);
EXPECT_EQ("", parser.ReadHexString());
parser.SetPos(std::numeric_limits<FX_FILESIZE>::max());
EXPECT_EQ("", parser.ReadHexString());
// Check string still parses when set to 0.
parser.SetPos(0);
EXPECT_EQ("\x12\xab", parser.ReadHexString());
}
{
// Missing ending >.
static const uint8_t data[] = "1A2b";
CPDF_SyntaxParser parser(pdfium::MakeRetain<CFX_ReadOnlySpanStream>(
pdfium::make_span(data, 4u)));
EXPECT_EQ("\x1a\x2b", parser.ReadHexString());
EXPECT_EQ(4, parser.GetPos());
}
{
// Missing ending >.
static const uint8_t data[] = "12abz";
CPDF_SyntaxParser parser(pdfium::MakeRetain<CFX_ReadOnlySpanStream>(
pdfium::make_span(data, 5u)));
EXPECT_EQ("\x12\xab", parser.ReadHexString());
EXPECT_EQ(5, parser.GetPos());
}
{
// Uneven number of bytes.
static const uint8_t data[] = "1A2>asdf";
CPDF_SyntaxParser parser(pdfium::MakeRetain<CFX_ReadOnlySpanStream>(
pdfium::make_span(data, 8u)));
EXPECT_EQ("\x1a\x20", parser.ReadHexString());
EXPECT_EQ(4, parser.GetPos());
}
{
// Uneven number of bytes.
static const uint8_t data[] = "1A2zasdf";
CPDF_SyntaxParser parser(pdfium::MakeRetain<CFX_ReadOnlySpanStream>(
pdfium::make_span(data, 8u)));
EXPECT_EQ("\x1a\x2a\xdf", parser.ReadHexString());
EXPECT_EQ(8, parser.GetPos());
}
{
// Just ending character.
static const uint8_t data[] = ">";
CPDF_SyntaxParser parser(pdfium::MakeRetain<CFX_ReadOnlySpanStream>(
pdfium::make_span(data, 1u)));
EXPECT_EQ("", parser.ReadHexString());
EXPECT_EQ(1, parser.GetPos());
}
}
TEST(SyntaxParserTest, GetInvalidReference) {
// Data with a reference with number CPDF_Object::kInvalidObjNum
static const uint8_t data[] = "4294967295 0 R";
CPDF_SyntaxParser parser(
pdfium::MakeRetain<CFX_ReadOnlySpanStream>(pdfium::make_span(data, 14u)));
RetainPtr<CPDF_Object> ref = parser.GetObjectBody(nullptr);
EXPECT_FALSE(ref);
}
TEST(SyntaxParserTest, PeekNextWord) {
static const uint8_t data[] = " WORD ";
CPDF_SyntaxParser parser(pdfium::MakeRetain<CFX_ReadOnlySpanStream>(data));
EXPECT_EQ("WORD", parser.PeekNextWord());
EXPECT_EQ("WORD", parser.GetNextWord().word);
}