chromium/third_party/pdfium/xfa/fgas/layout/fgas_arabic.cpp

// Copyright 2014 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 "xfa/fgas/layout/fgas_arabic.h"

#include <array>
#include <iterator>

#include "core/fxcrt/fx_unicode.h"
#include "core/fxcrt/stl_util.h"
#include "xfa/fgas/layout/cfgas_char.h"

namespace {

struct FX_ARBFORMTABLE { … };

struct FX_ARAALEF { … };

constexpr auto kFormTable = …;
constexpr uint16_t kFirstFormTableEntry = …;
constexpr uint16_t kLastFormTableEntry = …;

constexpr FX_ARAALEF kAlefTable[] = …;

constexpr auto kShaddaTable = …;
constexpr uint16_t kFirstShaddaTableEntry = …;
constexpr uint16_t kLastShaddaTableEntry = …;

const FX_ARBFORMTABLE* GetArabicFormTable(wchar_t unicode) { … }

const FX_ARBFORMTABLE* ParseChar(const CFGAS_Char* pTC,
                                 wchar_t* wChar,
                                 FX_CHARTYPE* eType) { … }

wchar_t GetArabicFromAlefTable(wchar_t alef) { … }

}  // namespace

namespace pdfium {

wchar_t GetArabicFormChar(wchar_t wch, wchar_t prev, wchar_t next) { … }

wchar_t GetArabicFormChar(const CFGAS_Char* cur,
                          const CFGAS_Char* prev,
                          const CFGAS_Char* next) { … }

std::optional<wchar_t> GetArabicFromShaddaTable(wchar_t shadda) { … }

}  // namespace pdfium