| // Copyright 2017 PDFium Authors. All rights reserved. |
| // 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 |
| |
| #ifndef CORE_FPDFAPI_FONT_CPDF_CMAP_H_ |
| #define CORE_FPDFAPI_FONT_CPDF_CMAP_H_ |
| |
| #include <vector> |
| |
| #include "core/fpdfapi/font/cpdf_cidfont.h" |
| #include "core/fxcrt/fx_memory_wrappers.h" |
| #include "core/fxcrt/retain_ptr.h" |
| #include "core/fxcrt/unowned_ptr.h" |
| #include "third_party/base/span.h" |
| |
| struct FXCMAP_CMap; |
| |
| enum class CIDCoding : uint8_t { |
| kUNKNOWN = 0, |
| kGB, |
| kBIG5, |
| kJIS, |
| kKOREA, |
| kUCS2, |
| kCID, |
| kUTF16, |
| }; |
| |
| class CPDF_CMap final : public Retainable { |
| public: |
| enum CodingScheme : uint8_t { |
| OneByte, |
| TwoBytes, |
| MixedTwoBytes, |
| MixedFourBytes |
| }; |
| |
| struct CodeRange { |
| size_t m_CharSize; |
| uint8_t m_Lower[4]; |
| uint8_t m_Upper[4]; |
| }; |
| |
| struct CIDRange { |
| uint32_t m_StartCode; |
| uint32_t m_EndCode; |
| uint16_t m_StartCID; |
| }; |
| |
| CONSTRUCT_VIA_MAKE_RETAIN; |
| |
| bool IsLoaded() const { return m_bLoaded; } |
| bool IsVertWriting() const { return m_bVertical; } |
| |
| uint16_t CIDFromCharCode(uint32_t charcode) const; |
| |
| int GetCharSize(uint32_t charcode) const; |
| uint32_t GetNextChar(ByteStringView pString, size_t* pOffset) const; |
| size_t CountChar(ByteStringView pString) const; |
| int AppendChar(char* str, uint32_t charcode) const; |
| |
| void SetVertical(bool vert) { m_bVertical = vert; } |
| void SetCodingScheme(CodingScheme scheme) { m_CodingScheme = scheme; } |
| void SetAdditionalMappings(std::vector<CIDRange> mappings); |
| void SetMixedFourByteLeadingRanges(std::vector<CodeRange> ranges); |
| |
| CIDCoding GetCoding() const { return m_Coding; } |
| const FXCMAP_CMap* GetEmbedMap() const { return m_pEmbedMap.Get(); } |
| CIDSet GetCharset() const { return m_Charset; } |
| void SetCharset(CIDSet set) { m_Charset = set; } |
| |
| void SetDirectCharcodeToCIDTable(size_t idx, uint16_t val) { |
| m_DirectCharcodeToCIDTable[idx] = val; |
| } |
| bool IsDirectCharcodeToCIDTableIsEmpty() const { |
| return m_DirectCharcodeToCIDTable.empty(); |
| } |
| |
| private: |
| explicit CPDF_CMap(ByteStringView bsPredefinedName); |
| explicit CPDF_CMap(pdfium::span<const uint8_t> spEmbeddedData); |
| ~CPDF_CMap() override; |
| |
| bool m_bLoaded = false; |
| bool m_bVertical = false; |
| CIDSet m_Charset = CIDSET_UNKNOWN; |
| CodingScheme m_CodingScheme = TwoBytes; |
| CIDCoding m_Coding = CIDCoding::kUNKNOWN; |
| std::vector<bool> m_MixedTwoByteLeadingBytes; |
| std::vector<CodeRange> m_MixedFourByteLeadingRanges; |
| std::vector<uint16_t, FxAllocAllocator<uint16_t>> m_DirectCharcodeToCIDTable; |
| std::vector<CIDRange> m_AdditionalCharcodeToCIDMappings; |
| UnownedPtr<const FXCMAP_CMap> m_pEmbedMap; |
| }; |
| |
| #endif // CORE_FPDFAPI_FONT_CPDF_CMAP_H_ |