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_CMAP_H_ 8 #define CORE_FPDFAPI_FONT_CPDF_CMAP_H_ 9 10 #include <vector> 11 12 #include "core/fpdfapi/font/cpdf_cidfont.h" 13 #include "core/fxcrt/retain_ptr.h" 14 15 class CPDF_CMapManager; 16 struct FXCMAP_CMap; 17 18 enum CIDCoding : uint8_t { 19 CIDCODING_UNKNOWN = 0, 20 CIDCODING_GB, 21 CIDCODING_BIG5, 22 CIDCODING_JIS, 23 CIDCODING_KOREA, 24 CIDCODING_UCS2, 25 CIDCODING_CID, 26 CIDCODING_UTF16, 27 }; 28 29 class CPDF_CMap : public Retainable { 30 public: 31 enum CodingScheme : uint8_t { 32 OneByte, 33 TwoBytes, 34 MixedTwoBytes, 35 MixedFourBytes 36 }; 37 38 struct CodeRange { 39 size_t m_CharSize; 40 uint8_t m_Lower[4]; 41 uint8_t m_Upper[4]; 42 }; 43 44 struct CIDRange { 45 uint32_t m_StartCode; 46 uint32_t m_EndCode; 47 uint16_t m_StartCID; 48 }; 49 50 template <typename T, typename... Args> 51 friend RetainPtr<T> pdfium::MakeRetain(Args&&... args); 52 53 void LoadPredefined(CPDF_CMapManager* pMgr, 54 const ByteString& name, 55 bool bPromptCJK); 56 void LoadEmbedded(const uint8_t* pData, uint32_t dwSize); 57 58 bool IsLoaded() const { return m_bLoaded; } 59 bool IsVertWriting() const { return m_bVertical; } 60 61 uint16_t CIDFromCharCode(uint32_t charcode) const; 62 63 int GetCharSize(uint32_t charcode) const; 64 uint32_t GetNextChar(const char* pString, int nStrLen, int& offset) const; 65 int CountChar(const char* pString, int size) const; 66 int AppendChar(char* str, uint32_t charcode) const; 67 68 void SetVertical(bool vert) { m_bVertical = vert; } 69 void SetCodingScheme(CodingScheme scheme) { m_CodingScheme = scheme; } 70 void SetMixedFourByteLeadingRanges(std::vector<CodeRange> range) { 71 m_MixedFourByteLeadingRanges = range; 72 } 73 74 int GetCoding() const { return m_Coding; } 75 const FXCMAP_CMap* GetEmbedMap() const { return m_pEmbedMap; } 76 CIDSet GetCharset() const { return m_Charset; } 77 void SetCharset(CIDSet set) { m_Charset = set; } 78 79 void SetDirectCharcodeToCIDTable(size_t idx, uint16_t val) { 80 m_DirectCharcodeToCIDTable[idx] = val; 81 } 82 bool IsDirectCharcodeToCIDTableIsEmpty() const { 83 return m_DirectCharcodeToCIDTable.empty(); 84 } 85 86 private: 87 CPDF_CMap(); 88 ~CPDF_CMap() override; 89 90 ByteString m_PredefinedCMap; 91 bool m_bLoaded; 92 bool m_bVertical; 93 CIDSet m_Charset; 94 CodingScheme m_CodingScheme; 95 int m_Coding; 96 std::vector<bool> m_MixedTwoByteLeadingBytes; 97 std::vector<CodeRange> m_MixedFourByteLeadingRanges; 98 std::vector<uint16_t> m_DirectCharcodeToCIDTable; 99 std::vector<CIDRange> m_AdditionalCharcodeToCIDMappings; 100 const FXCMAP_CMap* m_pEmbedMap; 101 }; 102 103 #endif // CORE_FPDFAPI_FONT_CPDF_CMAP_H_ 104
