| // Copyright 2017 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 |
| |
| #ifndef CORE_FPDFAPI_FONT_CPDF_TOUNICODEMAP_H_ |
| #define CORE_FPDFAPI_FONT_CPDF_TOUNICODEMAP_H_ |
| |
| #include <map> |
| #include <set> |
| #include <vector> |
| |
| #include "core/fxcrt/fx_string.h" |
| #include "core/fxcrt/retain_ptr.h" |
| #include "core/fxcrt/unowned_ptr.h" |
| #include "third_party/abseil-cpp/absl/types/optional.h" |
| |
| class CPDF_CID2UnicodeMap; |
| class CPDF_SimpleParser; |
| class CPDF_Stream; |
| |
| class CPDF_ToUnicodeMap { |
| public: |
| explicit CPDF_ToUnicodeMap(RetainPtr<const CPDF_Stream> pStream); |
| ~CPDF_ToUnicodeMap(); |
| |
| WideString Lookup(uint32_t charcode) const; |
| uint32_t ReverseLookup(wchar_t unicode) const; |
| |
| size_t GetUnicodeCountByCharcodeForTesting(uint32_t cid) const; |
| |
| private: |
| friend class cpdf_tounicodemap_StringToCode_Test; |
| friend class cpdf_tounicodemap_StringToWideString_Test; |
| |
| static absl::optional<uint32_t> StringToCode(ByteStringView str); |
| static WideString StringToWideString(ByteStringView str); |
| |
| void Load(RetainPtr<const CPDF_Stream> pStream); |
| void HandleBeginBFChar(CPDF_SimpleParser* pParser); |
| void HandleBeginBFRange(CPDF_SimpleParser* pParser); |
| uint32_t GetMultiCharIndexIndicator() const; |
| void SetCode(uint32_t srccode, WideString destcode); |
| |
| // Inserts a new entry which hasn't not been inserted into `m_Multimap` |
| // before. |
| void InsertIntoMultimap(uint32_t code, uint32_t destcode); |
| |
| std::map<uint32_t, std::set<uint32_t>> m_Multimap; |
| UnownedPtr<const CPDF_CID2UnicodeMap> m_pBaseMap; |
| std::vector<WideString> m_MultiCharVec; |
| }; |
| |
| #endif // CORE_FPDFAPI_FONT_CPDF_TOUNICODEMAP_H_ |