sui2skinreader.pas

SUIPack是一款为Delphi和C++Builder开发的所见即所得的界面增强VCL组件

////////////////////////////////////////////////////////////////////////////////
//
//
//  FileName    :   Skin2SkinReader.pas
//  Creator     :   Shen Min
//  Date        :   2006-02-23
//  Comment     :
//
//  Copyright (c) 2002-2006 Sunisoft
//  http://www.sunisoft.com
//  Email: [e-mail]
//
////////////////////////////////////////////////////////////////////////////////

unit SUI2SkinReader;

interface

uses Windows, Classes, SysUtils, Graphics;

type
    Tsk2SkinFileReader = class
    private
        m_BitmapList : TStrings;
        m_IntegerList : TStrings;
        m_BooleanList : TStrings;
        m_StrList : TStrings;
        m_Ready : Boolean;

        procedure Load(FileName, Password : String);

    public
        constructor Create(FileName, Password : String); reintroduce;
        destructor Destroy(); override;

        function GetBitmap(Key : String) : TBitmap;
        function GetInteger(Key : String) : Integer;
        function GetBool(Key : String) : Boolean;
        function GetStr(Key : String) : String;

        procedure SetInteger(Key : String; Value : Integer);
        procedure SetBool(Key : String; Value : Boolean);
        procedure SetBitmap(Key : String; const Buf : TBitmap);

        procedure ProcessTransparentColor(TransColor : TColor);

        property Ready : Boolean read m_Ready;

    end;


implementation

type
    Tsk2NodeType = (tbntStream, tbntInt, tbntBool, tbntStr);

    Tsk2SkinFileBaseHeader = packed record
        FileHeader : array [0..11] of Char;
        HeaderSize : Cardinal;
    end;

    Tsk2SkinFileHeader = packed record
        FileHeader : array [0..11] of Char;
        HeaderSize : Cardinal;
        FormatVer : Integer;
        FirstNode : Cardinal;
    end;

    Tsk2SkinFileNodeHeader = packed record
        NodeKey : array [0..63] of Char;
        NodeType : Tsk2NodeType;
        NodeStart : Cardinal;
        NodeSize : Cardinal;
        NextNode : Cardinal;
    end;

    TsuiUnzipResult = (suiURSucc, suiURFailed, suiURWrongPassword);

function FindTail(const Stream : TStream) : Integer;
var
    TailRec : packed record
        trSig : Integer;
        trMid : array [0..15] of BYTE;
        trLen : WORD;
    end;
begin
    Result := Stream.Seek(-sizeof(TailRec), soFromEnd);
    if Result >= 0 then
    begin
        Stream.ReadBuffer(TailRec, sizeof(TailRec));
        if (TailRec.trSig = $06054B50) and (TailRec.trLen = 0) then
            Stream.Seek(Result, soFromBeginning);
    end;
end;

type
    TFileHeader = record
        Signature : Integer;
        DiskNumber : WORD;
        StartDiskNumber : WORD;
        EntriesOnDisk : WORD;
        TotalEntries : WORD;
        DirectorySize : Integer;
        DirectoryOffset : Integer;
        ZipfileCommentLength : WORD;
    end;

    TDirFileHeader = record
        Signature : Integer;
        VersionMadeBy : WORD;
        VersionNeededToExtract : WORD;
        GeneralPurposeBitFlag : WORD;
        CompressionMethod : WORD;
        LastModFileTime : WORD;
        LastModFileDate : WORD;
        CRC32 : Integer;
        CompressedSize : Integer;
        UncompressedSize : Integer;
        FileNameLength : WORD;
        ExtraFieldLength : WORD;
        FileCommentLength : WORD;
        DiskNumberStart : WORD;
        InternalFileAttributes : WORD;
        ExternalFileAttributes : Integer;
        RelativeOffset : Integer;
    end;

    TLocalFileHeader = record
        Signature : Integer;
        VersionNeededToExtract : WORD;
        GeneralPurposeBitFlag : WORD;
        CompressionMethod : WORD;
        LastModFileTime : WORD;
        LastModFileDate : WORD;
        CRC32 : Integer;
        CompressedSize : Integer;
        UncompressedSize : Integer;
        FileNameLength : WORD;
        ExtraFieldLength : WORD;
    end;

const
    ExtractMaskArray : array [1..31] of Integer = (
        $00000001, $00000003, $00000007, $0000000F,
        $0000001F, $0000003F, $0000007F, $000000FF,
        $000001FF, $000003FF, $000007FF, $00000FFF,
        $00001FFF, $00003FFF, $00007FFF, $0000FFFF,
        $0001FFFF, $0003FFFF, $0007FFFF, $000FFFFF,
        $001FFFFF, $003FFFFF, $007FFFFF, $00FFFFFF,
        $01FFFFFF, $03FFFFFF, $07FFFFFF, $0FFFFFFF,
        $1FFFFFFF, $3FFFFFFF, $7FFFFFFF
       );
    CodeLengthIndex : array [0..18] of BYTE = (
        16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15
    );

    PowerOfTwo : array [0..15] of Integer = (
        1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768
    );

    LitExtraBits : array [0..30] of BYTE = (
        0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 16, 99, 99
    );

    DistExtraBits : array [0..31] of BYTE = (
        0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7,
        8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14
    );

    LengthBase : array [0..28] of WORD = (
        3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
        35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 3
    );

    DistanceBase : array [0..31] of WORD = (
        1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513,
        769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577, 32769, 49153
    );

    CRC32Table : array[0..255] of DWORD = (
        $00000000, $77073096, $ee0e612c, $990951ba, $076dc419, $706af48f, $e963a535,
        $9e6495a3, $0edb8832, $79dcb8a4, $e0d5e91e, $97d2d988, $09b64c2b, $7eb17cbd,
        $e7b82d07, $90bf1d91, $1db71064, $6ab020f2, $f3b97148, $84be41de, $1adad47d,
        $6ddde4eb, $f4d4b551, $83d385c7, $136c9856, $646ba8c0, $fd62f97a, $8a65c9ec,
        $14015c4f, $63066cd9, $fa0f3d63, $8d080df5, $3b6e20c8, $4c69105e, $d56041e4,
        $a2677172, $3c03e4d1, $4b04d447, $d20d85fd, $a50ab56b, $35b5a8fa, $42b2986c,
        $dbbbc9d6, $acbcf940, $32d86ce3, $45df5c75, $dcd60dcf, $abd13d59, $26d930ac,
        $51de003a, $c8d75180, $bfd06116, $21b4f4b5, $56b3c423, $cfba9599, $b8bda50f,
        $2802b89e, $5f058808, $c60cd9b2, $b10be924, $2f6f7c87, $58684c11, $c1611dab,
        $b6662d3d, $76dc4190, $01db7106, $98d220bc, $efd5102a, $71b18589, $06b6b51f,
        $9fbfe4a5, $e8b8d433, $7807c9a2, $0f00f934, $9609a88e, $e10e9818, $7f6a0dbb,
        $086d3d2d, $91646c97, $e6635c01, $6b6b51f4, $1c6c6162, $856530d8, $f262004e,
        $6c0695ed, $1b01a57b, $8208f4c1, $f50fc457, $65b0d9c6, $12b7e950, $8bbeb8ea,
        $fcb9887c, $62dd1ddf, $15da2d49, $8cd37cf3, $fbd44c65, $4db26158, $3ab551ce,
        $a3bc0074, $d4bb30e2, $4adfa541, $3dd895d7, $a4d1c46d, $d3d6f4fb, $4369e96a,
        $346ed9fc, $ad678846, $da60b8d0, $44042d73, $33031de5, $aa0a4c5f, $dd0d7cc9,
        $5005713c, $270241aa, $be0b1010, $c90c2086, $5768b525, $206f85b3, $b966d409,
        $ce61e49f, $5edef90e, $29d9c998, $b0d09822, $c7d7a8b4, $59b33d17, $2eb40d81,
        $b7bd5c3b, $c0ba6cad, $edb88320, $9abfb3b6, $03b6e20c, $74b1d29a, $ead54739,
        $9dd277af, $04db2615, $73dc1683, $e3630b12, $94643b84, $0d6d6a3e, $7a6a5aa8,
        $e40ecf0b, $9309ff9d, $0a00ae27, $7d079eb1, $f00f9344, $8708a3d2, $1e01f268,
        $6906c2fe, $f762575d, $806567cb, $196c3671, $6e6b06e7, $fed41b76, $89d32be0,
        $10da7a5a, $67dd4acc, $f9b9df6f, $8ebeeff9, $17b7be43, $60b08ed5, $d6d6a3e8,
        $a1d1937e, $38d8c2c4, $4fdff252, $d1bb67f1, $a6bc5767, $3fb506dd, $48b2364b,
        $d80d2bda, $af0a1b4c, $36034af6, $41047a60, $df60efc3, $a867df55, $316e8eef,
        $4669be79, $cb61b38c, $bc66831a, $256fd2a0, $5268e236, $cc0c7795, $bb0b4703,
        $220216b9, $5505262f, $c5ba3bbe, $b2bd0b28, $2bb45a92, $5cb36a04, $c2d7ffa7,
        $b5d0cf31, $2cd99e8b, $5bdeae1d, $9b64c2b0, $ec63f226, $756aa39c, $026d930a,
        $9c0906a9, $eb0e363f, $72076785, $05005713, $95bf4a82, $e2b87a14, $7bb12bae,
        $0cb61b38, $92d28e9b, $e5d5be0d, $7cdcefb7, $0bdbdf21, $86d3d2d4, $f1d4e242,
        $68ddb3f8, $1fda836e, $81be16cd, $f6b9265b, $6fb077e1, $18b74777, $88085ae6,
        $ff0f6a70, $66063bca, $11010b5c, $8f659eff, $f862ae69, $616bffd3, $166ccf45,
        $a00ae278, $d70dd2ee, $4e048354, $3903b3c2, $a7672661, $d06016f7, $4969474d,
        $3e6e77db, $aed16a4a, $d9d65adc, $40df0b66, $37d83bf0, $a9bcae53, $debb9ec5,
        $47b2cf7f, $30b5ffe9, $bdbdf21c, $cabac28a, $53b39330, $24b4a3a6, $bad03605,
        $cdd70693, $54de5729, $23d967bf, $b3667a2e, $c4614ab8, $5d681b02, $2a6f2b94,
        $b40bbe37, $c30c8ea1, $5a05df1b, $2d02ef8d
    );


type
    TIntegerList = array [0..MaxInt div sizeof(Integer) - 1] of Integer;
    PTIntegerList = ^TIntegerList;
    
    THuffmanTree = class
    private
        m_Decodes : PTIntegerList;
        m_DefMaxCodeLen : Integer;
        m_MaxCodeLen : Integer;
    public
        constructor Create(DefMaxCodeLen: Integer);
        destructor Destroy; override;

        procedure Build(
            const CodeLengths : array of Integer;
            StartInx : Integer;
            Count : Integer;
            const ExtraBits : array of BYTE;
            ExtraOffset : Integer
        );
        function Decode(LookupBits : Integer) : Integer;
        property MaxCodeLen : Integer read m_MaxCodeLen;
    end;

    TLenNotLen = packed record
        Len : WORD;
        NotLen : WORD;
    end;

    TEncrypetHeader = array [0..11] of BYTE;

    TLongAsBytes = packed record
        L1, L2, L3, L4 : BYTE
    end;

function FillBuffer(const Stream : TStream; var InBuf : PChar; var InBufPos : PChar; var InBufEnd : PChar) : Boolean;
var
    BytesRead : Integer;
    BytesToRead : Integer;
    i : Integer;
    Buffer : PChar;
    BufferCount : Integer;
    InFakeCount : Integer;
begin
    Buffer := InBuf;
    while (InBufPos <> InBufEnd) do
    begin
        Buffer^ := InBufPos^;
        Inc(InBufPos);
        Inc(Buffer);
    end;

    BytesToRead := 16 * 1024 - (Buffer - InBuf);
    BytesRead := Stream.Read(Buffer^, BytesToRead);

    InBufPos := InBuf;
    InBufEnd := Buffer + BytesRead;
    BufferCount := InBufEnd - InBuf;

    if (BufferCount = 0) then
        Result := false
    else
    begin
        Result := true;
        if (BytesRead = 0) and ((BufferCount mod 4) <> 0) then
        begin
            InFakeCount := 4 - (BufferCount mod 4);
            for i := 0 to InFakeCount - 1 do
            begin
                InBufEnd^ := #0;
                Inc(InBufEnd);
            end;
        end;
    end;
end;

procedure ReadBuffer(
    const Stream : TStream; var Buf; Count: Integer;
    var InBitsLeft : Integer; var InBitBuf : Integer; var InBufPos : PChar;
    var InBufEnd : PChar; var InBuf : PChar);
var
    i : integer;
    Buffer : PAnsiChar;
    BytesToRead   : integer;
    BytesInBuffer : integer;
begin
    Buffer := @Buf;

    if InBitsLeft > 0 then
    begin
        BytesToRead := InBitsLeft div 8;
        for i := 0 to BytesToRead - 1 do
        begin
            Buffer^ := Char(InBitBuf and $FF);
            Inc(Buffer);
            InBitBuf := InBitBuf shr 8;
        end;
        Dec(Count, BytesToRead);
    end;

    BytesInBuffer := InBufEnd - InBufPos;
    if Count <= BytesInBuffer then
        BytesToRead := Count
    else
        BytesToRead := BytesInBuffer;
    Move(InBufPos^, Buffer^, BytesToRead);

    Dec(Count, BytesToRead);
    Inc(InBufPos, BytesToRead);

    while Count <> 0 do
    begin
        Inc(Buffer, BytesToRead);