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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 _FX_CODEPAGE
#define _FX_CODEPAGE
class IFX_CodePage;
#define FX_CODEPAGE_DefANSI						0
#define FX_CODEPAGE_DefOEM						1
#define FX_CODEPAGE_DefMAC						2
#define FX_CODEPAGE_Thread						3
#define FX_CODEPAGE_Symbol						42
#define FX_CODEPAGE_MSDOS_US					437
#define FX_CODEPAGE_Arabic_ASMO708				708
#define FX_CODEPAGE_Arabic_ASMO449Plus			709
#define FX_CODEPAGE_Arabic_Transparent			710
#define FX_CODEPAGE_Arabic_NafithaEnhanced		711
#define FX_CODEPAGE_Arabic_TransparentASMO		720
#define FX_CODEPAGE_MSDOS_Greek1				737
#define FX_CODEPAGE_MSDOS_Baltic				775
#define FX_CODEPAGE_MSWin31_WesternEuropean		819
#define FX_CODEPAGE_MSDOS_WesternEuropean		850
#define FX_CODEPAGE_MSDOS_EasternEuropean		852
#define FX_CODEPAGE_MSDOS_Latin3				853
#define FX_CODEPAGE_MSDOS_Cyrillic				855
#define FX_CODEPAGE_MSDOS_Turkish				857
#define FX_CODEPAGE_MSDOS_Latin1Euro			858
#define FX_CODEPAGE_MSDOS_Portuguese			860
#define FX_CODEPAGE_MSDOS_Icelandic				861
#define FX_CODEPAGE_MSDOS_Hebrew				862
#define FX_CODEPAGE_MSDOS_FrenchCanadian		863
#define FX_CODEPAGE_MSDOS_Arabic				864
#define FX_CODEPAGE_MSDOS_Norwegian				865
#define FX_CODEPAGE_MSDOS_Russian				866
#define FX_CODEPAGE_MSDOS_Greek2				869
#define FX_CODEPAGE_MSDOS_Thai					874
#define FX_CODEPAGE_MSDOS_KamenickyCS			895
#define FX_CODEPAGE_ShiftJIS					932
#define FX_CODEPAGE_ChineseSimplified			936
#define FX_CODEPAGE_Korean						949
#define FX_CODEPAGE_ChineseTraditional			950
#define FX_CODEPAGE_UTF16LE						1200
#define FX_CODEPAGE_UTF16BE						1201
#define FX_CODEPAGE_MSWin_EasternEuropean		1250
#define FX_CODEPAGE_MSWin_Cyrillic				1251
#define FX_CODEPAGE_MSWin_WesternEuropean		1252
#define FX_CODEPAGE_MSWin_Greek					1253
#define FX_CODEPAGE_MSWin_Turkish				1254
#define FX_CODEPAGE_MSWin_Hebrew				1255
#define FX_CODEPAGE_MSWin_Arabic				1256
#define FX_CODEPAGE_MSWin_Baltic				1257
#define FX_CODEPAGE_MSWin_Vietnamese			1258
#define FX_CODEPAGE_Johab						1361
#define FX_CODEPAGE_MAC_Roman					10000
#define FX_CODEPAGE_MAC_ShiftJIS				10001
#define FX_CODEPAGE_MAC_ChineseTraditional		10002
#define FX_CODEPAGE_MAC_Korean					10003
#define FX_CODEPAGE_MAC_Arabic					10004
#define FX_CODEPAGE_MAC_Hebrew					10005
#define FX_CODEPAGE_MAC_Greek					10006
#define FX_CODEPAGE_MAC_Cyrillic				10007
#define FX_CODEPAGE_MAC_ChineseSimplified		10008
#define FX_CODEPAGE_MAC_Thai					10021
#define FX_CODEPAGE_MAC_EasternEuropean			10029
#define FX_CODEPAGE_MAC_Turkish					10081
#define FX_CODEPAGE_UTF32LE						12000
#define FX_CODEPAGE_UTF32BE						12001
#define FX_CODEPAGE_ISO8859_1					28591
#define FX_CODEPAGE_ISO8859_2					28592
#define FX_CODEPAGE_ISO8859_3					28593
#define FX_CODEPAGE_ISO8859_4					28594
#define FX_CODEPAGE_ISO8859_5					28595
#define FX_CODEPAGE_ISO8859_6					28596
#define FX_CODEPAGE_ISO8859_7					28597
#define FX_CODEPAGE_ISO8859_8					28598
#define FX_CODEPAGE_ISO8859_9					28599
#define FX_CODEPAGE_ISO8859_10					28600
#define FX_CODEPAGE_ISO8859_11					28601
#define FX_CODEPAGE_ISO8859_12					28602
#define FX_CODEPAGE_ISO8859_13					28603
#define FX_CODEPAGE_ISO8859_14					28604
#define FX_CODEPAGE_ISO8859_15					28605
#define FX_CODEPAGE_ISO8859_16					28606
#define FX_CODEPAGE_ISCII_Devanagari			57002
#define FX_CODEPAGE_ISCII_Bengali				57003
#define FX_CODEPAGE_ISCII_Tamil					57004
#define FX_CODEPAGE_ISCII_Telugu				57005
#define FX_CODEPAGE_ISCII_Assamese				57006
#define FX_CODEPAGE_ISCII_Oriya					57007
#define FX_CODEPAGE_ISCII_Kannada				57008
#define FX_CODEPAGE_ISCII_Malayalam				57009
#define FX_CODEPAGE_ISCII_Gujarati				57010
#define FX_CODEPAGE_ISCII_Punjabi				57011
#define FX_CODEPAGE_UTF7						65000
#define FX_CODEPAGE_UTF8						65001
#define FX_CHARSET_ANSI							0
#define FX_CHARSET_Default						1
#define FX_CHARSET_Symbol						2
#define FX_CHARSET_MAC_Roman					77
#define FX_CHARSET_MAC_ShiftJIS					78
#define FX_CHARSET_MAC_Korean					79
#define FX_CHARSET_MAC_ChineseSimplified		80
#define FX_CHARSET_MAC_ChineseTriditional		81
#define FX_CHARSET_MAC_Johab					82
#define FX_CHARSET_MAC_Hebrew					83
#define FX_CHARSET_MAC_Arabic					84
#define FX_CHARSET_MAC_Greek					85
#define FX_CHARSET_MAC_Turkish					86
#define FX_CHARSET_MAC_Thai						87
#define FX_CHARSET_MAC_EasternEuropean			88
#define FX_CHARSET_MAC_Cyrillic					89
#define FX_CHARSET_ShiftJIS						128
#define FX_CHARSET_Korean						129
#define FX_CHARSET_Johab						130
#define FX_CHARSET_ChineseSimplified			134
#define FX_CHARSET_ChineseTriditional			136
#define FX_CHARSET_MSWin_Greek					161
#define FX_CHARSET_MSWin_Turkish				162
#define FX_CHARSET_MSWin_Vietnamese				163
#define FX_CHARSET_MSWin_Hebrew					177
#define FX_CHARSET_MSWin_Arabic					178
#define FX_CHARSET_ArabicTraditional			179
#define FX_CHARSET_ArabicUser					180
#define FX_CHARSET_HebrewUser					181
#define FX_CHARSET_MSWin_Baltic					186
#define FX_CHARSET_MSWin_Cyrillic				204
#define FX_CHARSET_Thai							222
#define FX_CHARSET_MSWin_EasterEuropean			238
#define FX_CHARSET_US							254
#define FX_CHARSET_OEM							255
FX_WORD	FX_GetCodePageFromCharset(FX_BYTE charset);
FX_WORD FX_GetCharsetFromCodePage(FX_WORD codepage);
FX_WORD	FX_GetCodePageFromStringA(FX_LPCSTR pStr, FX_INT32 iLength);
FX_WORD FX_GetCodePageFormStringW(FX_LPCWSTR pStr, FX_INT32 iLength);
FX_WORD	FX_GetDefCodePageByLanguage(FX_WORD wLanguage);
void	FX_SwapByteOrder(FX_LPWSTR pStr, FX_INT32 iLength);
void	FX_SwapByteOrderCopy(FX_LPCWSTR pSrc, FX_LPWSTR pDst, FX_INT32 iLength);
void	FX_UTF16ToWChar(FX_LPVOID pBuffer, FX_INT32 iLength);
void	FX_UTF16ToWCharCopy(const FX_WORD *pUTF16, FX_LPWSTR pWChar, FX_INT32 iLength);
void	FX_WCharToUTF16(FX_LPVOID pBuffer, FX_INT32 iLength);
void	FX_WCharToUTF16Copy(FX_LPCWSTR pWChar, FX_WORD *pUTF16, FX_INT32 iLength);
FX_INT32	FX_DecodeString(FX_WORD wCodePage, FX_LPCSTR pSrc, FX_INT32 *pSrcLen, FX_LPWSTR pDst, FX_INT32 *pDstLen, FX_BOOL bErrBreak = FALSE);
FX_INT32	FX_UTF8Decode(FX_LPCSTR pSrc, FX_INT32 *pSrcLen, FX_LPWSTR pDst, FX_INT32 *pDstLen);
enum FX_CODESYSTEM {
    FX_MBCS		=  0,
    FX_SBCS			,
    FX_DBCS			,
};
typedef struct _FX_CODEPAGE_HEADER {
    FX_UINT16		uCPID;
    FX_UINT8		uMinCharBytes;
    FX_UINT8		uMaxCharBytes;
    FX_CODESYSTEM	eCPType;
    FX_BOOL			bHasLeadByte;
    FX_WCHAR		wMinChar;
    FX_WCHAR		wMaxChar;
    FX_WCHAR		wDefChar;
    FX_WCHAR		wMinUnicode;
    FX_WCHAR		wMaxUnicode;
    FX_WCHAR		wDefUnicode;
} FX_CODEPAGE_HEADER;
#define FX_CPMAPTYPE_Consecution	1
#define FX_CPMAPTYPE_Strict			2
#define FX_CPMAPTYPE_NoMapping		3
#define FX_CPMAPTYPE_Delta			4
typedef struct _FX_CPCU_MAPTABLE1 {
    FX_UINT16  uMapType;
    FX_UINT16  uUniocde;
} FX_CPCU_MAPTABLE1;
typedef struct _FX_CPCU_MAPTABLE2 {
    FX_UINT8	uTrailByte;
    FX_UINT8	uMapType;
    FX_UINT16	uOffset;
} FX_CPCU_MAPTABLE2;
typedef struct _FX_CPCU_MAPINFO {
    FX_CPCU_MAPTABLE1		*pMapTable1;
    FX_CPCU_MAPTABLE2		*pMapTable2;
    FX_LPCBYTE				pMapData;
} FX_CPCU_MAPINFO;
typedef struct _FX_CPUC_MAPTABLE {
    FX_UINT16	uStartUnicode;
    FX_UINT16	uEndUnicode;
    FX_UINT16	uMapType;
    FX_UINT16	uOffset;
} FX_CPUC_MAPTABLE;
typedef struct _FX_CPUC_MAPINFO {
    FX_UINT32			uMapCount;
    FX_CPUC_MAPTABLE	*pMapTable;
    FX_LPCBYTE			pMapData;
} FX_CPUC_MAPINFO;
typedef struct _FX_CODEPAGE {
    FX_CODEPAGE_HEADER const	*pCPHeader;
    FX_CPCU_MAPINFO const		*pCPCUMapInfo;
    FX_CPUC_MAPINFO const		*pCPUCMapInfo;
} FX_CODEPAGE, * FX_LPCODEPAGE;
typedef FX_CODEPAGE const * FX_LPCCODEPAGE;
typedef struct _FX_STR2CPHASH {
    FX_UINT32  uHash;
    FX_UINT32  uCodePage;
} FX_STR2CPHASH;
typedef struct _FX_CHARSET_MAP {
    FX_UINT16 charset;
    FX_UINT16 codepage;
} FX_CHARSET_MAP;
typedef struct _FX_LANG2CPMAP {
    FX_WORD	wLanguage;
    FX_WORD	wCodepage;
} FX_LANG2CPMAP;
class IFX_CodePage
{
public:
    static IFX_CodePage*	Create(FX_WORD wCodePage);
    virtual void			Release() = 0;
    virtual FX_WORD			GetCodePageNumber() const = 0;
    virtual FX_CODESYSTEM	GetCodeSystemType() const = 0;
    virtual FX_BOOL			HasLeadByte() const = 0;
    virtual FX_BOOL			IsLeadByte(FX_BYTE byte) const = 0;
    virtual FX_INT32		GetMinBytesPerChar() const = 0;
    virtual FX_INT32		GetMaxBytesPerChar() const = 0;
    virtual FX_WCHAR		GetMinCharcode() const = 0;
    virtual FX_WCHAR		GetMaxCharcode() const = 0;
    virtual FX_WCHAR		GetDefCharcode() const = 0;
    virtual FX_WCHAR		GetMinUnicode() const = 0;
    virtual FX_WCHAR		GetMaxUnicode() const = 0;
    virtual FX_WCHAR		GetDefUnicode() const = 0;
    virtual FX_BOOL			IsValidCharcode(FX_WORD wCharcode) const = 0;
    virtual FX_WCHAR		GetUnicode(FX_WORD wCharcode) const = 0;
    virtual FX_BOOL			IsValidUnicode(FX_WCHAR wUnicode) const = 0;
    virtual FX_WORD			GetCharcode(FX_WCHAR wUnicode) const = 0;
};
#endif