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<p>There are some more bugs in this code.</p> <p>Here is test for it:</p> <pre><code>program PunyCodeTest; uses Vcl.Dialogs, SysUtils, PunyCode in '..\SRC\PunyCode.pas'; type TCodecTestRec = record Decoded: AnsiString; Encoded: AnsiString; end; TDomainTestRec = record Decoded: WideString; Encoded: AnsiString; end; const CodecTestCases: array [0..19] of TCodecTestRec = ( // My samples // ---------- // 蒙古火锅-test (Decoded: 'u+8499 u+53E4 u+706B u+9505 u+002D u+0074 u+0065 u+0073 u+0074'; Encoded: '-test-xt8h571o0z7ad54a'), // RFC 3492 - 7.1 Sample strings // ----------------------------- // (A) Arabic (Egyptian): (Decoded: 'u+0644 u+064A u+0647 u+0645 u+0627 u+0628 u+062A u+0643 u+0644 '+ 'u+0645 u+0648 u+0634 u+0639 u+0631 u+0628 u+064A u+061F'; Encoded: 'egbpdaj6bu4bxfgehfvwxn'), //(B) Chinese (simplified): (Decoded: 'u+4ED6 u+4EEC u+4E3A u+4EC0 u+4E48 u+4E0D u+8BF4 u+4E2D u+6587'; Encoded: 'ihqwcrb4cv8a8dqg056pqjye'), // (C) Chinese (traditional): (Decoded: 'u+4ED6 u+5011 u+7232 u+4EC0 u+9EBD u+4E0D u+8AAA u+4E2D u+6587'; Encoded: 'ihqwctvzc91f659drss3x8bo0yb'), // (D) Czech: Pro<ccaron>prost<ecaron>nemluv<iacute><ccaron>esky (Decoded: 'U+0050 u+0072 u+006F u+010D u+0070 u+0072 u+006F u+0073 u+0074 '+ 'u+011B u+006E u+0065 u+006D u+006C u+0075 u+0076 u+00ED u+010D u+0065 '+ 'u+0073 u+006B u+0079'; Encoded: 'Proprostnemluvesky-uyb24dma41a'), // (E) Hebrew: (Decoded: 'u+05DC u+05DE u+05D4 u+05D4 u+05DD u+05E4 u+05E9 u+05D5 u+05D8 '+ 'u+05DC u+05D0 u+05DE u+05D3 u+05D1 u+05E8 u+05D9 u+05DD u+05E2 u+05D1 '+ 'u+05E8 u+05D9 u+05EA'; Encoded: '4dbcagdahymbxekheh6e0a7fei0b'), // (F) Hindi (Devanagari): (Decoded: 'u+092F u+0939 u+0932 u+094B u+0917 u+0939 u+093F u+0928 u+094D '+ 'u+0926 u+0940 u+0915 u+094D u+092F u+094B u+0902 u+0928 u+0939 u+0940 '+ 'u+0902 u+092C u+094B u+0932 u+0938 u+0915 u+0924 u+0947 u+0939 u+0948 '+ 'u+0902'; Encoded: 'i1baa7eci9glrd9b2ae1bj0hfcgg6iyaf8o0a1dig0cd'), // (G) Japanese (kanji and hiragana): (Decoded: 'u+306A u+305C u+307F u+3093 u+306A u+65E5 u+672C u+8A9E u+3092 '+ 'u+8A71 u+3057 u+3066 u+304F u+308C u+306A u+3044 u+306E u+304B'; Encoded: 'n8jok5ay5dzabd5bym9f0cm5685rrjetr6pdxa'), // (H) Korean (Hangul syllables): (Decoded: 'u+C138 u+ACC4 u+C758 u+BAA8 u+B4E0 u+C0AC u+B78C u+B4E4 u+C774 '+ 'u+D55C u+AD6D u+C5B4 u+B97C u+C774 u+D574 u+D55C u+B2E4 u+BA74 u+C5BC '+ 'u+B9C8 u+B098 u+C88B u+C744 u+AE4C'; Encoded: '989aomsvi5e83db1d2a355cv1e0vak1dwrv93d5xbh15a0dt30a5jpsd879ccm6fea98c'), // (I) Russian (Cyrillic): (Decoded: 'U+043F u+043E u+0447 u+0435 u+043C u+0443 u+0436 u+0435 u+043E '+ 'u+043D u+0438 u+043D u+0435 u+0433 u+043E u+0432 u+043E u+0440 u+044F '+ 'u+0442 u+043F u+043E u+0440 u+0443 u+0441 u+0441 u+043A u+0438'; Encoded: 'b1abfaaepdrnnbgefbaDotcwatmq2g4l'), // (J) Spanish: Porqu<eacute>nopuedensimplementehablarenEspa<ntilde>ol (Decoded: 'U+0050 u+006F u+0072 u+0071 u+0075 u+00E9 u+006E u+006F u+0070 '+ 'u+0075 u+0065 u+0064 u+0065 u+006E u+0073 u+0069 u+006D u+0070 u+006C '+ 'u+0065 u+006D u+0065 u+006E u+0074 u+0065 u+0068 u+0061 u+0062 u+006C '+ 'u+0061 u+0072 u+0065 u+006E U+0045 u+0073 u+0070 u+0061 u+00F1 u+006F '+ 'u+006C'; Encoded: 'PorqunopuedensimplementehablarenEspaol-fmd56a'), // (K) Vietnamese: // T<adotbelow>isaoh<odotbelow>kh<ocirc>ngth<ecirchookabove>ch\ // <ihookabove>n<oacute>iti<ecircacute>ngVi<ecircdotbelow>t (Decoded: 'U+0054 u+1EA1 u+0069 u+0073 u+0061 u+006F u+0068 u+1ECD u+006B '+ 'u+0068 u+00F4 u+006E u+0067 u+0074 u+0068 u+1EC3 u+0063 u+0068 u+1EC9 '+ 'u+006E u+00F3 u+0069 u+0074 u+0069 u+1EBF u+006E u+0067 U+0056 u+0069 '+ 'u+1EC7 u+0074'; Encoded: 'TisaohkhngthchnitingVit-kjcr8268qyxafd2f1b9g'), // (L) 3<nen>B<gumi><kinpachi><sensei> (Decoded: 'u+0033 u+5E74 U+0042 u+7D44 u+91D1 u+516B u+5148 u+751F'; Encoded: '3B-ww4c5e180e575a65lsy2b'), // (M) <amuro><namie>-with-SUPER-MONKEYS (Decoded: 'u+5B89 u+5BA4 u+5948 u+7F8E u+6075 u+002D u+0077 u+0069 u+0074 '+ 'u+0068 u+002D U+0053 U+0055 U+0050 U+0045 U+0052 u+002D U+004D U+004F '+ 'U+004E U+004B U+0045 U+0059 U+0053'; Encoded: '-with-SUPER-MONKEYS-pc58ag80a8qai00g7n9n'), // (N) Hello-Another-Way-<sorezore><no><basho> (Decoded: 'U+0048 u+0065 u+006C u+006C u+006F u+002D U+0041 u+006E u+006F '+ 'u+0074 u+0068 u+0065 u+0072 u+002D U+0057 u+0061 u+0079 u+002D u+305D '+ 'u+308C u+305E u+308C u+306E u+5834 u+6240'; Encoded: 'Hello-Another-Way--fc4qua05auwb3674vfr0b'), // (O) <hitotsu><yane><no><shita>2 (Decoded: 'u+3072 u+3068 u+3064 u+5C4B u+6839 u+306E u+4E0B u+0032'; Encoded: '2-u9tlzr9756bt3uc0v'), // (P) Maji<de>Koi<suru>5<byou><mae> (Decoded: 'U+004D u+0061 u+006A u+0069 u+3067 U+004B u+006F u+0069 u+3059 '+ 'u+308B u+0035 u+79D2 u+524D'; Encoded: 'MajiKoi5-783gue6qz075azm5e'), // (Q) <pafii>de<runba> (Decoded: 'u+30D1 u+30D5 u+30A3 u+30FC u+0064 u+0065 u+30EB u+30F3 u+30D0'; Encoded: 'de-jg4avhby1noc0d'), // (R) <sono><supiido><de> (Decoded: 'u+305D u+306E u+30B9 u+30D4 u+30FC u+30C9 u+3067'; Encoded: 'd9juau41awczczp'), // (S) -> $1.00 <- (Decoded: 'u+002D u+003E u+0020 u+0024 u+0031 u+002E u+0030 u+0030 u+0020 '+ 'u+003C u+002D'; Encoded: '-> $1.00 <--') ); DomainTestCases: array [0..2] of TDomainTestRec = ( (Decoded: '蒙古火锅-test.cn'; Encoded: 'xn---test-xt8h571o0z7ad54a.cn'), (Decoded: 'президент.рф'; Encoded: 'xn--d1abbgf6aiiy.xn--p1ai'), (Decoded: 'почта.мд'; Encoded: 'xn--80a1acny.xn--d1ap') ); const UnicodeMaxLength = 256; AceMaxLength = 256; function ExtractCodePoint(S: AnsiString; var Off: Integer; out caseflag: Byte; out codept: TPunyCode): Boolean; procedure InvalidInput; begin raise EAssertionFailed.Create('Invalid input'); end; begin Result := False; if Off > Length(S) then Exit; if Off+5 > Length(S) then InvalidInput; if S[Off] = 'u' then caseflag := 0 else if S[Off] = 'U' then caseflag := 1 else InvalidInput; Inc(Off); if S[Off] <> '+' then InvalidInput; Inc(Off); codept := StrToInt('$'+Copy(S, Off, 4)); Inc(Off, 4); if (Off <= Length(S)) and (S[Off] <> ' ') then InvalidInput; Inc(Off); Result := True; end; procedure TestEncoder(Decoded, Encoded: AnsiString); var inlen, outlen: Cardinal; caseflags: array [0..UnicodeMaxLength-1] of Byte; input: array [0..UnicodeMaxLength-1] of TPunyCode; output: array [0..AceMaxLength-1] of Byte; Off: Integer; caseflag: Byte; codept: TPunyCode; begin inlen := 0; Off := 1; while ExtractCodePoint(Decoded, Off, caseflag, codept) do begin caseflags[inlen] := caseflag; input[inlen] := codept; Inc(inlen); end; outlen := AceMaxLength; if (PunycodeEncode(inlen, @input, outlen, @output, @caseflags) <> pcSuccess) or (outlen <> Cardinal(Length(Encoded))) or not CompareMem(@output, @Encoded[1], outlen) then raise EAssertionFailed.CreateFmt('Encoding failed: %s', [Decoded]); end; function MakeDecoded(outlen: Cardinal; output: PPunycode; caseflags: PByte): AnsiString; var _caseflags: PByteArray absolute caseflags; I: Integer; S: AnsiString; begin Result := ''; for I := 0 to outlen - 1 do begin if _caseflags[I] = 0 then S := 'u+' else S := 'U+'; S := S + IntToHex(output[I], 4); if Result = '' then Result := S else Result := Result + ' ' + S; end; end; procedure TestDecoder(Decoded, Encoded: AnsiString); var inlen, outlen: Cardinal; caseflags: array [0..UnicodeMaxLength-1] of Byte; output: array [0..UnicodeMaxLength-1] of TPunyCode; begin inlen := Length(Encoded); if inlen > AceMaxLength then raise EAssertionFailed.CreateFmt('Input is too big: %s', [Encoded]); outlen := UnicodeMaxLength; if (PunycodeDecode(inlen, PByte(@Encoded[1]), outlen, @output, @caseflags) <> pcSuccess) or (MakeDecoded(outlen, @output, @caseflags) <> Decoded) then raise EAssertionFailed.CreateFmt('Decoding failed: %s', [Encoded]); end; procedure TestCodec(Decoded, Encoded: AnsiString); begin TestEncoder(Decoded, Encoded); TestDecoder(Decoded, Encoded); end; procedure TestCodecTestCases; var I: Integer; begin for I := 0 to High(CodecTestCases) do TestCodec(CodecTestCases[I].Decoded, CodecTestCases[I].Encoded); end; procedure TestDomain(Decoded: WideString; Encoded: AnsiString); begin if PunycodeEncodeDomain(Decoded) <> Encoded then raise EAssertionFailed.CreateFmt('Encoding failed: %s', [Decoded]); if PunycodeDecodeDomain(Encoded) <> Decoded then raise EAssertionFailed.CreateFmt('Decoding failed: %s', [Encoded]); end; procedure TestDomainTestCases; var I: Integer; begin for I := 0 to High(DomainTestCases) do TestDomain(DomainTestCases[I].Decoded, DomainTestCases[I].Encoded); end; begin TestCodecTestCases; TestDomainTestCases; MessageDlg('Punycode was successfully tested', mtInformation, [mbOK], 0); end. </code></pre>
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