chromium/third_party/pdfium/core/fpdftext/cpdf_textpagefind.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/fpdftext/cpdf_textpagefind.h"

#include <wchar.h>

#include <vector>

#include "core/fpdftext/cpdf_textpage.h"
#include "core/fxcrt/check.h"
#include "core/fxcrt/compiler_specific.h"
#include "core/fxcrt/fx_extension.h"
#include "core/fxcrt/fx_string.h"
#include "core/fxcrt/fx_system.h"
#include "core/fxcrt/fx_unicode.h"
#include "core/fxcrt/ptr_util.h"
#include "core/fxcrt/stl_util.h"

namespace {

constexpr wchar_t kNonBreakingSpace = …;

bool IsIgnoreSpaceCharacter(wchar_t curChar) { … }

bool IsMatchWholeWord(const WideString& csPageText,
                      size_t startPos,
                      size_t endPos) { … }

WideString GetStringCase(const WideString& wsOriginal, bool bMatchCase) { … }

std::optional<WideString> ExtractSubString(const wchar_t* lpszFullString,
                                           int iSubString) { … }

std::vector<WideString> ExtractFindWhat(const WideString& findwhat) { … }

}  // namespace

// static
std::unique_ptr<CPDF_TextPageFind> CPDF_TextPageFind::Create(
    const CPDF_TextPage* pTextPage,
    const WideString& findwhat,
    const Options& options,
    std::optional<size_t> startPos) { … }

CPDF_TextPageFind::CPDF_TextPageFind(
    const CPDF_TextPage* pTextPage,
    const std::vector<WideString>& findwhat_array,
    const Options& options,
    std::optional<size_t> startPos)
    : … { … }

CPDF_TextPageFind::~CPDF_TextPageFind() = default;

int CPDF_TextPageFind::GetCharIndex(int index) const { … }

bool CPDF_TextPageFind::FindFirst() { … }

bool CPDF_TextPageFind::FindNext() { … }

bool CPDF_TextPageFind::FindPrev() { … }

int CPDF_TextPageFind::GetCurOrder() const { … }

int CPDF_TextPageFind::GetMatchedCount() const { … }