chromium/third_party/pdfium/core/fpdfapi/page/cpdf_streamparser.cpp

// 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.

// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com

#include "core/fpdfapi/page/cpdf_streamparser.h"

#include <ctype.h>

#include <algorithm>
#include <memory>
#include <utility>

#include "constants/stream_dict_common.h"
#include "core/fpdfapi/page/cpdf_docpagedata.h"
#include "core/fpdfapi/parser/cpdf_array.h"
#include "core/fpdfapi/parser/cpdf_boolean.h"
#include "core/fpdfapi/parser/cpdf_dictionary.h"
#include "core/fpdfapi/parser/cpdf_name.h"
#include "core/fpdfapi/parser/cpdf_null.h"
#include "core/fpdfapi/parser/cpdf_number.h"
#include "core/fpdfapi/parser/cpdf_stream.h"
#include "core/fpdfapi/parser/cpdf_string.h"
#include "core/fpdfapi/parser/fpdf_parser_decode.h"
#include "core/fpdfapi/parser/fpdf_parser_utility.h"
#include "core/fxcodec/data_and_bytes_consumed.h"
#include "core/fxcodec/jpeg/jpegmodule.h"
#include "core/fxcodec/scanlinedecoder.h"
#include "core/fxcrt/check.h"
#include "core/fxcrt/data_vector.h"
#include "core/fxcrt/fx_extension.h"
#include "core/fxcrt/fx_safe_types.h"
#include "core/fxcrt/span_util.h"
#include "core/fxge/calculate_pitch.h"

namespace {

const uint32_t kMaxNestedParsingLevel = …;
const size_t kMaxStringLength = …;

const char kTrue[] = …;
const char kFalse[] = …;
const char kNull[] = …;

uint32_t DecodeAllScanlines(std::unique_ptr<ScanlineDecoder> pDecoder) { … }

uint32_t DecodeInlineStream(pdfium::span<const uint8_t> src_span,
                            int width,
                            int height,
                            const ByteString& decoder,
                            RetainPtr<const CPDF_Dictionary> pParam,
                            uint32_t orig_size) { … }

}  // namespace

CPDF_StreamParser::CPDF_StreamParser(pdfium::span<const uint8_t> span)
    : … { … }

CPDF_StreamParser::CPDF_StreamParser(pdfium::span<const uint8_t> span,
                                     const WeakPtr<ByteStringPool>& pPool)
    : … { … }

CPDF_StreamParser::~CPDF_StreamParser() = default;

RetainPtr<CPDF_Stream> CPDF_StreamParser::ReadInlineStream(
    CPDF_Document* pDoc,
    RetainPtr<CPDF_Dictionary> pDict,
    const CPDF_Object* pCSObj) { … }

CPDF_StreamParser::ElementType CPDF_StreamParser::ParseNextElement() { … }

RetainPtr<CPDF_Object> CPDF_StreamParser::ReadNextObject(
    bool bAllowNestedArray,
    bool bInArray,
    uint32_t dwRecursionLevel) { … }

// TODO(npm): the following methods are almost identical in cpdf_syntaxparser
void CPDF_StreamParser::GetNextWord(bool& bIsNumber) { … }

ByteString CPDF_StreamParser::ReadString() { … }

DataVector<uint8_t> CPDF_StreamParser::ReadHexString() { … }

bool CPDF_StreamParser::PositionIsInBounds() const { … }