chromium/third_party/pdfium/core/fpdfdoc/cpdf_pagelabel.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/fpdfdoc/cpdf_pagelabel.h"

#include <array>
#include <utility>

#include "core/fpdfapi/parser/cpdf_dictionary.h"
#include "core/fpdfapi/parser/cpdf_document.h"
#include "core/fpdfapi/parser/fpdf_parser_decode.h"
#include "core/fpdfdoc/cpdf_numbertree.h"
#include "core/fxcrt/stl_util.h"

namespace {

WideString MakeRoman(int num) { … }

WideString MakeLetters(int num) { … }

WideString GetLabelNumPortion(int num, const ByteString& style) { … }

}  // namespace

CPDF_PageLabel::CPDF_PageLabel(CPDF_Document* doc) : … { … }

CPDF_PageLabel::~CPDF_PageLabel() = default;

std::optional<WideString> CPDF_PageLabel::GetLabel(int page_index) const { … }