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// Copyright 2014 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_FONT_INT_H_
#define CORE_FPDFAPI_FONT_FONT_INT_H_
#include <map>
#include <memory>
#include <utility>
#include <vector>
#include "core/fpdfapi/font/cpdf_cidfont.h"
#include "core/fxcrt/cfx_retain_ptr.h"
#include "core/fxcrt/fx_basic.h"
class CPDF_CID2UnicodeMap;
class CPDF_CMapManager;
class CPDF_Font;
class CPDF_Stream;
struct FXCMAP_CMap;
using FXFT_Library = void*;
int TT2PDF(int m, FXFT_Face face);
bool FT_UseTTCharmap(FXFT_Face face, int platform_id, int encoding_id);
CIDSet CharsetFromOrdering(const CFX_ByteStringC& ordering);
class CFX_StockFontArray {
public:
CFX_StockFontArray();
~CFX_StockFontArray();
// Takes ownership of |pFont|, returns unowned pointer to it.
CPDF_Font* SetFont(uint32_t index, std::unique_ptr<CPDF_Font> pFont);
CPDF_Font* GetFont(uint32_t index) const;
private:
std::unique_ptr<CPDF_Font> m_StockFonts[14];
};
enum CIDCoding : uint8_t {
CIDCODING_UNKNOWN = 0,
CIDCODING_GB,
CIDCODING_BIG5,
CIDCODING_JIS,
CIDCODING_KOREA,
CIDCODING_UCS2,
CIDCODING_CID,
CIDCODING_UTF16,
};
class CPDF_CMap : public CFX_Retainable {
public:
enum CodingScheme : uint8_t {
OneByte,
TwoBytes,
MixedTwoBytes,
MixedFourBytes
};
struct CodeRange {
int 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;
};
template <typename T, typename... Args>
friend CFX_RetainPtr<T> pdfium::MakeRetain(Args&&... args);
void LoadPredefined(CPDF_CMapManager* pMgr,
const CFX_ByteString& name,
bool bPromptCJK);
void LoadEmbedded(const uint8_t* pData, uint32_t dwSize);
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(const char* pString, int nStrLen, int& offset) const;
int CountChar(const char* pString, int size) const;
int AppendChar(char* str, uint32_t charcode) const;
private:
friend class CPDF_CMapParser;
friend class CPDF_CIDFont;
CPDF_CMap();
~CPDF_CMap() override;
CFX_ByteString m_PredefinedCMap;
bool m_bLoaded;
bool m_bVertical;
CIDSet m_Charset;
CodingScheme m_CodingScheme;
int m_Coding;
std::vector<bool> m_MixedTwoByteLeadingBytes;
std::vector<CodeRange> m_MixedFourByteLeadingRanges;
std::vector<uint16_t> m_DirectCharcodeToCIDTable;
std::vector<CIDRange> m_AdditionalCharcodeToCIDMappings;
const FXCMAP_CMap* m_pEmbedMap;
};
class CPDF_CMapManager {
public:
CPDF_CMapManager();
~CPDF_CMapManager();
CFX_RetainPtr<CPDF_CMap> GetPredefinedCMap(const CFX_ByteString& name,
bool bPromptCJK);
CPDF_CID2UnicodeMap* GetCID2UnicodeMap(CIDSet charset, bool bPromptCJK);
private:
CFX_RetainPtr<CPDF_CMap> LoadPredefinedCMap(const CFX_ByteString& name,
bool bPromptCJK);
std::unique_ptr<CPDF_CID2UnicodeMap> LoadCID2UnicodeMap(CIDSet charset,
bool bPromptCJK);
std::map<CFX_ByteString, CFX_RetainPtr<CPDF_CMap>> m_CMaps;
std::unique_ptr<CPDF_CID2UnicodeMap> m_CID2UnicodeMaps[6];
};
class CPDF_CMapParser {
public:
explicit CPDF_CMapParser(CPDF_CMap* pMap);
~CPDF_CMapParser();
void ParseWord(const CFX_ByteStringC& str);
bool HasAdditionalMappings() const {
return !m_AdditionalCharcodeToCIDMappings.empty();
}
std::vector<CPDF_CMap::CIDRange> TakeAdditionalMappings() {
return std::move(m_AdditionalCharcodeToCIDMappings);
}
private:
friend class fpdf_font_cid_CMap_GetCode_Test;
friend class fpdf_font_cid_CMap_GetCodeRange_Test;
static uint32_t CMap_GetCode(const CFX_ByteStringC& word);
static bool CMap_GetCodeRange(CPDF_CMap::CodeRange& range,
const CFX_ByteStringC& first,
const CFX_ByteStringC& second);
CPDF_CMap* const m_pCMap;
int m_Status;
int m_CodeSeq;
uint32_t m_CodePoints[4];
std::vector<CPDF_CMap::CodeRange> m_CodeRanges;
std::vector<CPDF_CMap::CIDRange> m_AdditionalCharcodeToCIDMappings;
CFX_ByteString m_LastWord;
};
class CPDF_CID2UnicodeMap {
public:
CPDF_CID2UnicodeMap();
~CPDF_CID2UnicodeMap();
bool IsLoaded();
void Load(CPDF_CMapManager* pMgr, CIDSet charset, bool bPromptCJK);
wchar_t UnicodeFromCID(uint16_t CID);
private:
CIDSet m_Charset;
const uint16_t* m_pEmbeddedMap;
uint32_t m_EmbeddedCount;
};
class CPDF_ToUnicodeMap {
public:
CPDF_ToUnicodeMap();
~CPDF_ToUnicodeMap();
void Load(CPDF_Stream* pStream);
CFX_WideString Lookup(uint32_t charcode) const;
uint32_t ReverseLookup(wchar_t unicode) const;
private:
friend class fpdf_font_StringToCode_Test;
friend class fpdf_font_StringToWideString_Test;
static uint32_t StringToCode(const CFX_ByteStringC& str);
static CFX_WideString StringToWideString(const CFX_ByteStringC& str);
uint32_t GetUnicode();
std::map<uint32_t, uint32_t> m_Map;
CPDF_CID2UnicodeMap* m_pBaseMap;
CFX_WideTextBuf m_MultiCharBuf;
};
class CPDF_FontGlobals {
public:
CPDF_FontGlobals();
~CPDF_FontGlobals();
void Clear(CPDF_Document* pDoc);
CPDF_Font* Find(CPDF_Document* pDoc, uint32_t index);
// Takes ownership of |pFont|, returns unowned pointer to it.
CPDF_Font* Set(CPDF_Document* key,
uint32_t index,
std::unique_ptr<CPDF_Font> pFont);
CPDF_CMapManager m_CMapManager;
struct {
const FXCMAP_CMap* m_pMapList;
uint32_t m_Count;
} m_EmbeddedCharsets[CIDSET_NUM_SETS];
struct {
const uint16_t* m_pMap;
uint32_t m_Count;
} m_EmbeddedToUnicodes[CIDSET_NUM_SETS];
private:
std::map<CPDF_Document*, std::unique_ptr<CFX_StockFontArray>> m_StockMap;
};
#endif // CORE_FPDFAPI_FONT_FONT_INT_H_
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