1 // Copyright 2017 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #ifndef CORE_FPDFAPI_FONT_CPDF_TOUNICODEMAP_H_ 8 #define CORE_FPDFAPI_FONT_CPDF_TOUNICODEMAP_H_ 9 10 #include <map> 11 12 #include "core/fxcrt/cfx_widetextbuf.h" 13 #include "core/fxcrt/unowned_ptr.h" 14 15 class CPDF_CID2UnicodeMap; 16 class CPDF_SimpleParser; 17 class CPDF_Stream; 18 19 class CPDF_ToUnicodeMap { 20 public: 21 explicit CPDF_ToUnicodeMap(const CPDF_Stream* pStream); 22 ~CPDF_ToUnicodeMap(); 23 24 WideString Lookup(uint32_t charcode) const; 25 uint32_t ReverseLookup(wchar_t unicode) const; 26 27 private: 28 friend class cpdf_tounicodemap_StringToCode_Test; 29 friend class cpdf_tounicodemap_StringToWideString_Test; 30 31 static pdfium::Optional<uint32_t> StringToCode(ByteStringView str); 32 static WideString StringToWideString(ByteStringView str); 33 34 void Load(const CPDF_Stream* pStream); 35 void HandleBeginBFChar(CPDF_SimpleParser* pParser); 36 void HandleBeginBFRange(CPDF_SimpleParser* pParser); 37 uint32_t GetUnicode() const; 38 void SetCode(uint32_t srccode, WideString destcode); 39 40 std::map<uint32_t, uint32_t> m_Map; 41 UnownedPtr<const CPDF_CID2UnicodeMap> m_pBaseMap; 42 CFX_WideTextBuf m_MultiCharBuf; 43 }; 44 45 #endif // CORE_FPDFAPI_FONT_CPDF_TOUNICODEMAP_H_ 46