chromium/third_party/pdfium/core/fpdfapi/font/cpdf_cmap.cpp

// Copyright 2017 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/font/cpdf_cmap.h"

#include <array>
#include <utility>
#include <vector>

#include "core/fpdfapi/cmaps/fpdf_cmaps.h"
#include "core/fpdfapi/font/cpdf_cmapparser.h"
#include "core/fpdfapi/font/cpdf_fontglobals.h"
#include "core/fpdfapi/parser/cpdf_simple_parser.h"
#include "core/fxcrt/check.h"
#include "core/fxcrt/fx_memcpy_wrappers.h"
#include "core/fxcrt/notreached.h"

namespace {

struct ByteRange { … };

struct PredefinedCMap { … };

constexpr PredefinedCMap kPredefinedCMaps[] = …;

const PredefinedCMap* GetPredefinedCMap(ByteStringView cmapid) { … }

std::vector<bool> LoadLeadingSegments(const PredefinedCMap& map) { … }

int CheckFourByteCodeRange(pdfium::span<uint8_t> codes,
                           pdfium::span<const CPDF_CMap::CodeRange> ranges) { … }

size_t GetFourByteCharSizeImpl(
    uint32_t charcode,
    pdfium::span<const CPDF_CMap::CodeRange> ranges) { … }

const fxcmap::CMap* FindEmbeddedCMap(pdfium::span<const fxcmap::CMap> pCMaps,
                                     ByteStringView bsName) { … }

}  // namespace

CPDF_CMap::CPDF_CMap(ByteStringView bsPredefinedName)
    : … { … }

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

CPDF_CMap::~CPDF_CMap() = default;

uint16_t CPDF_CMap::CIDFromCharCode(uint32_t charcode) const { … }

uint32_t CPDF_CMap::GetNextChar(ByteStringView pString, size_t* pOffset) const { … }

int CPDF_CMap::GetCharSize(uint32_t charcode) const { … }

size_t CPDF_CMap::CountChar(ByteStringView pString) const { … }

void CPDF_CMap::AppendChar(ByteString* str, uint32_t charcode) const { … }

void CPDF_CMap::SetAdditionalMappings(std::vector<CIDRange> mappings) { … }

void CPDF_CMap::SetMixedFourByteLeadingRanges(std::vector<CodeRange> ranges) { … }

void CPDF_CMap::SetDirectCharcodeToCIDTableRange(uint32_t start_code,
                                                 uint32_t end_code,
                                                 uint16_t start_cid) { … }