Delphi的unicode与GB2312转转换, 汉字unicode转GB2312

Delphi的unicode与GB2312转转换, 汉字unicode转GB2312 {===============================================================} { 函数 : RESULTSTRING = HexToBin(HEXSTRING) { 目的 : 把十六进制字符串转换为二进制字符串 { {===============================================================} { 函数 : RESULTINTEGER = HexCharToInt(HEXCHAR) { 目的 : 转换一个十六进制字符为整数 {===============================================================} { 函数 : RESULTSTRING = HexCharToBin(HEXCHAR) { 目的 : 转换一个十六进制字符为二进制字符串 {===============================================================} { 函数 : RESULTINTEGER = Pow(BASE,POWER) { 目的 : 指数函数 {===============================================================} { 函数 : RESULTINTEGER = BinStrToInt(BINSTRING) { 目的 : 把二进制字符串转换为整数 {===============================================================} { 函数 : RESULTSTRING = DecodeSMS7Bit (PDUSTRING) { 目的 : 解码一个7-bit SMS (GSM 03.38) 为ASCII码 {===============================================================} { 函数 : RESULTSTRING = ReverseStr (SOURCESTRING) { 目的 : 反转一个字符串 {===============================================================} {===============================================================} { 函数 : RESULTSTRING = UniCode2Gb (SOURCESTRING) { 目的 : 将UniCode字符串转换为GB {===============================================================} {===============================================================} { 函数 : RESULTSTRING = GB2UniCode (SOURCESTRING) { 目的 : 将GB字符串转换为UniCode {===============================================================} unit BinHexTools; interface function HexToBin(HexNr: string): string; function HexCharToInt(HexToken: char): Integer; function HexCharToBin(HexToken: char): string; function pow(base, power: integer): integer; function BinStrToInt(BinStr: string): Integer; function DecodeSMS7Bit(PDU: string): string; function ReverseStr(SourceStr: string): string; function GB2UniCode(GB: string): string; function UniCode2GB(S: string): string; implementation uses sysutils, dialogs; function HexCharToInt(HexToken: char): Integer; begin //if HexToken>#97 then HexToken:=Chr(Ord(HexToken)-32); { 将小写字母转换成大写 } Result := 0; if (HexToken > #47) and (HexToken < #58) then { chars 0....9 } Result := Ord(HexToken) - 48 else if (HexToken > #64) and (HexToken < #71) then { chars A....F } Result := Ord(HexToken) - 65 + 10; end; function HexCharToBin(HexToken: char): string; var DivLeft: integer; begin DivLeft := HexCharToInt(HexToken); { first HexChar->Int } Result := ''; { Use reverse dividing } repeat { Trick; divide by 2 } if Odd(DivLeft) then { result = odd ? then bit = 1 } Result := '1' + Result { result = even ? then bit = 0 } else Result := '0' + Result; DivLeft := DivLeft div 2; { keep dividing till 0 left and length = 4 } until (DivLeft = 0) and (length(Result) = 4); { 1 token = nibble = 4 bits } end; function HexToBin(HexNr: string): string; { only stringsize is limit of binnr } var Counter: integer; begin Result := ''; for Counter := 1 to length(HexNr) do Result := Result + HexCharToBin(HexNr[Counter]); end; function pow(base, power: integer): integer; //指数base^power var counter: integer; begin Result := 1; for counter := 1 to power do Result := Result * base; end; function BinStrToInt(BinStr: string): integer; var counter: integer; begin if length(BinStr) > 16 then raise ERangeError.Create(#13 + BinStr + #13 + '不是一个有效的16Bit二进制单元' + #13); Result := 0; for counter := 1 to length(BinStr) do if BinStr[Counter] = '1' then Result := Result + pow(2, length(BinStr) - counter); end; function DecodeSMS7Bit(PDU: string): string; var OctetStr: string; OctetBin: string; Charbin: string; PrevOctet: string; Counter: integer; Counter2: integer; begin PrevOctet := ''; Result := ''; for Counter := 1 to length(PDU) do begin if length(PrevOctet) >= 7 then { if 7 Bit overflow on previous } begin if BinStrToInt(PrevOctet) <> 0 then Result := Result + Chr(BinStrToInt(PrevOctet)) else Result := Result + ' '; PrevOctet := ''; end; if Odd(Counter) then { only take two nibbles at a time } begin OctetStr := Copy(PDU, Counter, 2); OctetBin := HexToBin(OctetStr); Charbin := ''; for Counter2 := 1 to length(PrevOctet) do Charbin := Charbin + PrevOctet[Counter2]; for Counter2 := 1 to 7 - length(PrevOctet) do Charbin := OctetBin[8 - Counter2 + 1] + Charbin; if BinStrToInt(Charbin) <> 0 then Result := Result + Chr(BinStrToInt(CharBin)) else Result := Result + ' '; PrevOctet := Copy(OctetBin, 1, length(PrevOctet) + 1); end; end; end; function ReverseStr(SourceStr: string): string; var Counter: integer; begin Result := ''; for Counter := 1 to length(SourceStr) do Result := SourceStr[Counter] + Result; end; function GB2UniCode(GB: string): string; var s: string; i, j, k: integer; a: array[1..160] of char; begin s := ''; StringToWideChar(GB, @(a[1]), 500); i := 1; while ((a[i] <> #0) or (a[i + 1] <> #0)) do begin j := Integer(a[i]); k := Integer(a[i + 1]); s := s + Copy(Format('%X ', [k * $100 + j + $10000]), 2, 4); //S := S + Char(k)+Char(j); i := i + 2; end; Result := s; end; function UniCode2GB(S: string): string; var I: Integer; begin I := Length(S); while I >= 4 do begin try Result := WideChar(StrToInt('$' + S[I - 3] + S[I - 2] + S[I - 1] + S[I])) + Result; except end; I := I - 4; end; end; end.