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author | whiteshark0 <whiteshark0@b956fd51-792f-4845-bead-9b4dfca2ff2c> | 2010-05-18 20:21:06 +0000 |
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committer | whiteshark0 <whiteshark0@b956fd51-792f-4845-bead-9b4dfca2ff2c> | 2010-05-18 20:21:06 +0000 |
commit | 394e5e3dec8b507c42de91ca48115e19f66b09e6 (patch) | |
tree | d6089f8f03633b3618703f95a53c6c2308a6eb1f /us_maker_edition/src/lib/TntUnicodeControls/TntSystem.pas | |
parent | fae6b541ae866c6e48172af0726e163ae2992f7f (diff) | |
download | usdx-394e5e3dec8b507c42de91ca48115e19f66b09e6.tar.gz usdx-394e5e3dec8b507c42de91ca48115e19f66b09e6.tar.xz usdx-394e5e3dec8b507c42de91ca48115e19f66b09e6.zip |
branch current trunk to branches/experimental/us_maker_edition to merge editor changes from davidus01
git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/branches/experimental@2384 b956fd51-792f-4845-bead-9b4dfca2ff2c
Diffstat (limited to '')
-rw-r--r-- | us_maker_edition/src/lib/TntUnicodeControls/TntSystem.pas | 1427 |
1 files changed, 1427 insertions, 0 deletions
diff --git a/us_maker_edition/src/lib/TntUnicodeControls/TntSystem.pas b/us_maker_edition/src/lib/TntUnicodeControls/TntSystem.pas new file mode 100644 index 00000000..e613ce0c --- /dev/null +++ b/us_maker_edition/src/lib/TntUnicodeControls/TntSystem.pas @@ -0,0 +1,1427 @@ + +{*****************************************************************************} +{ } +{ Tnt Delphi Unicode Controls } +{ http://www.tntware.com/delphicontrols/unicode/ } +{ Version: 2.3.0 } +{ } +{ Copyright (c) 2002-2007, Troy Wolbrink (troy.wolbrink@tntware.com) } +{ } +{*****************************************************************************} + +unit TntSystem; + +{$IFDEF FPC} + {$MODE Delphi} +{$ENDIF} + +{$INCLUDE TntCompilers.inc} + +{*****************************************************************************} +{ Special thanks go to Francisco Leong for originating the design for } +{ WideString-enabled resourcestrings. } +{*****************************************************************************} + +interface + +uses + Windows; + +// These functions should not be used by Delphi code since conversions are implicit. +{TNT-WARN WideCharToString} +{TNT-WARN WideCharLenToString} +{TNT-WARN WideCharToStrVar} +{TNT-WARN WideCharLenToStrVar} +{TNT-WARN StringToWideChar} + +// ................ ANSI TYPES ................ +{TNT-WARN Char} +{TNT-WARN PChar} +{TNT-WARN String} + +{TNT-WARN CP_ACP} // <-- use DefaultSystemCodePage +function DefaultSystemCodePage: Cardinal; // implicitly used when converting AnsiString <--> WideString. + +{$IFNDEF FPC} +var + WideCustomLoadResString: function(ResStringRec: PResStringRec; var Value: WideString): Boolean; +{$ENDIF} + +{TNT-WARN LoadResString} +function WideLoadResString(ResStringRec: PResStringRec): WideString; +{TNT-WARN ParamCount} +function WideParamCount: Integer; +{TNT-WARN ParamStr} +function WideParamStr(Index: Integer): WideString; + +// ......... introduced ......... + +const + { Each Unicode stream should begin with the code U+FEFF, } + { which the standard defines as the *byte order mark*. } + UNICODE_BOM = WideChar($FEFF); + UNICODE_BOM_SWAPPED = WideChar($FFFE); + UTF8_BOM = AnsiString(#$EF#$BB#$BF); + +function WideStringToUTF8(const S: WideString): AnsiString; +function UTF8ToWideString(const S: AnsiString): WideString; + +function WideStringToUTF7(const W: WideString): AnsiString; +function UTF7ToWideString(const S: AnsiString): WideString; + +function StringToWideStringEx(const S: AnsiString; CodePage: Cardinal): WideString; +function WideStringToStringEx(const WS: WideString; CodePage: Cardinal): AnsiString; + +function UCS2ToWideString(const Value: AnsiString): WideString; +function WideStringToUCS2(const Value: WideString): AnsiString; + +function CharSetToCodePage(ciCharset: UINT): Cardinal; +function LCIDToCodePage(ALcid: LCID): Cardinal; +function KeyboardCodePage: Cardinal; +function KeyUnicode(CharCode: Word): WideChar; + +procedure StrSwapByteOrder(Str: PWideChar); + +{$IFDEF USE_SYSTEM_OVERRIDES} + +type + TTntSystemUpdate = + (tsWideResourceStrings + {$IFNDEF COMPILER_9_UP}, tsFixImplicitCodePage, tsFixWideStrConcat, tsFixWideFormat {$ENDIF} + ); + TTntSystemUpdateSet = set of TTntSystemUpdate; + +const + AllTntSystemUpdates = [Low(TTntSystemUpdate)..High(TTntSystemUpdate)]; + +procedure InstallTntSystemUpdates(Updates: TTntSystemUpdateSet = AllTntSystemUpdates); + +{$ENDIF USE_SYSTEM_OVERRIDES} + +implementation + +uses + SysUtils, Variants, TntWindows, TntSysUtils; + +var + GDefaultSystemCodePage: Cardinal; + +function DefaultSystemCodePage: Cardinal; +begin + Result := GDefaultSystemCodePage; +end; + +{$IFDEF USE_SYSTEM_OVERRIDES} +var + IsDebugging: Boolean; +{$ENDIF USE_SYSTEM_OVERRIDES} + +function WideLoadResStringDetect(ResStringRec: PResStringRec): WideString; +var + PCustom: PAnsiChar; +begin + // custom string pointer + PCustom := PAnsiChar(ResStringRec); { I would like to use PWideChar, but this would break legacy code. } + if (StrLen{TNT-ALLOW StrLen}(PCustom) > Cardinal(Length(UTF8_BOM))) + and CompareMem(PCustom, PAnsiChar(UTF8_BOM), Length(UTF8_BOM)) then + // detected UTF8 + Result := UTF8ToWideString(PAnsiChar(PCustom + Length(UTF8_BOM))) + else + // normal + Result := PCustom; +end; + +{$IFNDEF FPC} + +function WideLoadResString(ResStringRec: PResStringRec): WideString; +const + MAX_RES_STRING_SIZE = 4097; { MSDN documents this as the maximum size of a string in table. } +var + Buffer: array [0..MAX_RES_STRING_SIZE] of WideChar; { Buffer leaves room for null terminator. } +begin + if Assigned(WideCustomLoadResString) and WideCustomLoadResString(ResStringRec, Result) then + exit; { a custom resourcestring has been loaded. } + + if ResStringRec = nil then + Result := '' + else if ResStringRec.Identifier < 64*1024 then + SetString(Result, Buffer, + Tnt_LoadStringW(FindResourceHInstance(ResStringRec.Module^), + ResStringRec.Identifier, Buffer, MAX_RES_STRING_SIZE)) + else begin + Result := WideLoadResStringDetect(ResStringRec); + end; +end; + +{$ELSE} + +function WideLoadResString(ResStringRec: PResStringRec): WideString; +begin + Result := WideLoadResStringDetect(ResStringRec); +end; + +{$ENDIF} + +function WideGetParamStr(P: PWideChar; var Param: WideString): PWideChar; +var + i, Len: Integer; + Start, S, Q: PWideChar; +begin + while True do + begin + while (P[0] <> #0) and (P[0] <= ' ') do + Inc(P); + if (P[0] = '"') and (P[1] = '"') then Inc(P, 2) else Break; + end; + Len := 0; + Start := P; + while P[0] > ' ' do + begin + if P[0] = '"' then + begin + Inc(P); + while (P[0] <> #0) and (P[0] <> '"') do + begin + Q := P + 1; + Inc(Len, Q - P); + P := Q; + end; + if P[0] <> #0 then + Inc(P); + end + else + begin + Q := P + 1; + Inc(Len, Q - P); + P := Q; + end; + end; + + SetLength(Param, Len); + + P := Start; + S := PWideChar(Param); + i := 0; + while P[0] > ' ' do + begin + if P[0] = '"' then + begin + Inc(P); + while (P[0] <> #0) and (P[0] <> '"') do + begin + Q := P + 1; + while P < Q do + begin + S[i] := P^; + Inc(P); + Inc(i); + end; + end; + if P[0] <> #0 then Inc(P); + end + else + begin + Q := P + 1; + while P < Q do + begin + S[i] := P^; + Inc(P); + Inc(i); + end; + end; + end; + + Result := P; +end; + +function WideParamCount: Integer; +var + P: PWideChar; + S: WideString; +begin + P := WideGetParamStr(GetCommandLineW, S); + Result := 0; + while True do + begin + P := WideGetParamStr(P, S); + if S = '' then Break; + Inc(Result); + end; +end; + +function WideParamStr(Index: Integer): WideString; +var + P: PWideChar; +begin + if Index = 0 then + Result := WideGetModuleFileName(0) + else + begin + P := GetCommandLineW; + while True do + begin + P := WideGetParamStr(P, Result); + if (Index = 0) or (Result = '') then Break; + Dec(Index); + end; + end; +end; + +function WideStringToUTF8(const S: WideString): AnsiString; +begin + Result := UTF8Encode(S); +end; + +function UTF8ToWideString(const S: AnsiString): WideString; +begin + Result := UTF8Decode(S); +end; + + { ======================================================================= } + { Original File: ConvertUTF7.c } + { Author: David B. Goldsmith } + { Copyright (C) 1994, 1996 Taligent, Inc. All rights reserved. } + { } + { This code is copyrighted. Under the copyright laws, this code may not } + { be copied, in whole or part, without prior written consent of Taligent. } + { } + { Taligent grants the right to use this code as long as this ENTIRE } + { copyright notice is reproduced in the code. The code is provided } + { AS-IS, AND TALIGENT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR } + { IMPLIED, INCLUDING, BUT NOT LIMITED TO IMPLIED WARRANTIES OF } + { MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT } + { WILL TALIGENT BE LIABLE FOR ANY DAMAGES WHATSOEVER (INCLUDING, } + { WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS PROFITS, BUSINESS } + { INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR OTHER PECUNIARY } + { LOSS) ARISING OUT OF THE USE OR INABILITY TO USE THIS CODE, EVEN } + { IF TALIGENT HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. } + { BECAUSE SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF } + { LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, THE ABOVE } + { LIMITATION MAY NOT APPLY TO YOU. } + { } + { RESTRICTED RIGHTS LEGEND: Use, duplication, or disclosure by the } + { government is subject to restrictions as set forth in subparagraph } + { (c)(l)(ii) of the Rights in Technical Data and Computer Software } + { clause at DFARS 252.227-7013 and FAR 52.227-19. } + { } + { This code may be protected by one or more U.S. and International } + { Patents. } + { } + { TRADEMARKS: Taligent and the Taligent Design Mark are registered } + { trademarks of Taligent, Inc. } + { ======================================================================= } + +type UCS2 = Word; + +const + _base64: AnsiString = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'; + _direct: AnsiString = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789''(),-./:?'; + _optional: AnsiString = '!"#$%&*;<=>@[]^_`{|}'; + _spaces: AnsiString = #9#13#10#32; + +var + base64: PAnsiChar; + invbase64: array[0..127] of SmallInt; + direct: PAnsiChar; + optional: PAnsiChar; + spaces: PAnsiChar; + mustshiftsafe: array[0..127] of AnsiChar; + mustshiftopt: array[0..127] of AnsiChar; + +var + needtables: Boolean = True; + +procedure Initialize_UTF7_Data; +begin + base64 := PAnsiChar(_base64); + direct := PAnsiChar(_direct); + optional := PAnsiChar(_optional); + spaces := PAnsiChar(_spaces); +end; + +procedure tabinit; +var + i: Integer; + limit: Integer; +begin + i := 0; + while (i < 128) do + begin + mustshiftopt[i] := #1; + mustshiftsafe[i] := #1; + invbase64[i] := -1; + Inc(i); + end { For }; + limit := Length(_Direct); + i := 0; + while (i < limit) do + begin + mustshiftopt[Integer(direct[i])] := #0; + mustshiftsafe[Integer(direct[i])] := #0; + Inc(i); + end { For }; + limit := Length(_Spaces); + i := 0; + while (i < limit) do + begin + mustshiftopt[Integer(spaces[i])] := #0; + mustshiftsafe[Integer(spaces[i])] := #0; + Inc(i); + end { For }; + limit := Length(_Optional); + i := 0; + while (i < limit) do + begin + mustshiftopt[Integer(optional[i])] := #0; + Inc(i); + end { For }; + limit := Length(_Base64); + i := 0; + while (i < limit) do + begin + invbase64[Integer(base64[i])] := i; + Inc(i); + end { For }; + needtables := False; +end; { tabinit } + +function WRITE_N_BITS(x: UCS2; n: Integer; var BITbuffer: Cardinal; var bufferbits: Integer): Integer; +begin + BITbuffer := BITbuffer or (x and (not (-1 shl n))) shl (32 - n - bufferbits); + bufferbits := bufferbits + n; + Result := bufferbits; +end; { WRITE_N_BITS } + +function READ_N_BITS(n: Integer; var BITbuffer: Cardinal; var bufferbits: Integer): UCS2; +var + buffertemp: Cardinal; +begin + buffertemp := BITbuffer shr (32 - n); + BITbuffer := BITbuffer shl n; + bufferbits := bufferbits - n; + Result := UCS2(buffertemp); +end; { READ_N_BITS } + +function ConvertUCS2toUTF7(var sourceStart: PWideChar; sourceEnd: PWideChar; + var targetStart: PAnsiChar; targetEnd: PAnsiChar; optional: Boolean; + verbose: Boolean): Integer; +var + r: UCS2; + target: PAnsiChar; + source: PWideChar; + BITbuffer: Cardinal; + bufferbits: Integer; + shifted: Boolean; + needshift: Boolean; + done: Boolean; + mustshift: PAnsiChar; +begin + Initialize_UTF7_Data; + Result := 0; + BITbuffer := 0; + bufferbits := 0; + shifted := False; + source := sourceStart; + target := targetStart; + r := 0; + if needtables then + tabinit; + if optional then + mustshift := @mustshiftopt[0] + else + mustshift := @mustshiftsafe[0]; + repeat + done := source >= sourceEnd; + if not Done then + begin + r := Word(source^); + Inc(Source); + end { If }; + needshift := (not done) and ((r > $7F) or (mustshift[r] <> #0)); + if needshift and (not shifted) then + begin + if (Target >= TargetEnd) then + begin + Result := 2; + break; + end { If }; + target^ := '+'; + Inc(target); + { Special case handling of the SHIFT_IN character } + if (r = UCS2('+')) then + begin + if (target >= targetEnd) then + begin + Result := 2; + break; + end; + target^ := '-'; + Inc(target); + end + else + shifted := True; + end { If }; + if shifted then + begin + { Either write the character to the bit buffer, or pad } + { the bit buffer out to a full base64 character. } + { } + if needshift then + WRITE_N_BITS(r, 16, BITbuffer, bufferbits) + else + WRITE_N_BITS(0, (6 - (bufferbits mod 6)) mod 6, BITbuffer, + bufferbits); + { Flush out as many full base64 characters as possible } + { from the bit buffer. } + { } + while (target < targetEnd) and (bufferbits >= 6) do + begin + Target^ := base64[READ_N_BITS(6, BITbuffer, bufferbits)]; + Inc(Target); + end { While }; + if (bufferbits >= 6) then + begin + if (target >= targetEnd) then + begin + Result := 2; + break; + end { If }; + end { If }; + if (not needshift) then + begin + { Write the explicit shift out character if } + { 1) The caller has requested we always do it, or } + { 2) The directly encoded character is in the } + { base64 set, or } + { 3) The directly encoded character is SHIFT_OUT. } + { } + if verbose or ((not done) and ((invbase64[r] >= 0) or (r = + Integer('-')))) then + begin + if (target >= targetEnd) then + begin + Result := 2; + Break; + end { If }; + Target^ := '-'; + Inc(Target); + end { If }; + shifted := False; + end { If }; + { The character can be directly encoded as ASCII. } + end { If }; + if (not needshift) and (not done) then + begin + if (target >= targetEnd) then + begin + Result := 2; + break; + end { If }; + Target^ := AnsiChar(r); + Inc(Target); + end { If }; + until (done); + sourceStart := source; + targetStart := target; +end; { ConvertUCS2toUTF7 } + +function ConvertUTF7toUCS2(var sourceStart: PAnsiChar; sourceEnd: PAnsiChar; + var targetStart: PWideChar; targetEnd: PWideChar): Integer; +var + target: PWideChar { Register }; + source: PAnsiChar { Register }; + BITbuffer: Cardinal { & "Address Of" Used }; + bufferbits: Integer { & "Address Of" Used }; + shifted: Boolean { Used In Boolean Context }; + first: Boolean { Used In Boolean Context }; + wroteone: Boolean; + base64EOF: Boolean; + base64value: Integer; + done: Boolean; + c: UCS2; + prevc: UCS2; + junk: UCS2 { Used In Boolean Context }; +begin + Initialize_UTF7_Data; + Result := 0; + BITbuffer := 0; + bufferbits := 0; + shifted := False; + first := False; + wroteone := False; + source := sourceStart; + target := targetStart; + c := 0; + if needtables then + tabinit; + repeat + { read an ASCII character c } + done := Source >= SourceEnd; + if (not done) then + begin + c := Word(Source^); + Inc(Source); + end { If }; + if shifted then + begin + { We're done with a base64 string if we hit EOF, it's not a valid } + { ASCII character, or it's not in the base64 set. } + { } + base64value := invbase64[c]; + base64EOF := (done or (c > $7F)) or (base64value < 0); + if base64EOF then + begin + shifted := False; + { If the character causing us to drop out was SHIFT_IN or } + { SHIFT_OUT, it may be a special escape for SHIFT_IN. The } + { test for SHIFT_IN is not necessary, but allows an alternate } + { form of UTF-7 where SHIFT_IN is escaped by SHIFT_IN. This } + { only works for some values of SHIFT_IN. } + { } + if ((not done) and ((c = Integer('+')) or (c = Integer('-')))) then + begin + { get another character c } + prevc := c; + Done := Source >= SourceEnd; + if (not Done) then + begin + c := Word(Source^); + Inc(Source); + { If no base64 characters were encountered, and the } + { character terminating the shift sequence was } + { SHIFT_OUT, then it's a special escape for SHIFT_IN. } + { } + end; + if first and (prevc = Integer('-')) then + begin + { write SHIFT_IN unicode } + if (target >= targetEnd) then + begin + Result := 2; + break; + end { If }; + Target^ := WideChar('+'); + Inc(Target); + end + else + begin + if (not wroteone) then + begin + Result := 1; + end { If }; + end { Else }; + ; + end { If } + else + begin + if (not wroteone) then + begin + Result := 1; + end { If }; + end { Else }; + end { If } + else + begin + { Add another 6 bits of base64 to the bit buffer. } + WRITE_N_BITS(base64value, 6, BITbuffer, + bufferbits); + first := False; + end { Else }; + { Extract as many full 16 bit characters as possible from the } + { bit buffer. } + { } + while (bufferbits >= 16) and (target < targetEnd) do + begin + { write a unicode } + Target^ := WideChar(READ_N_BITS(16, BITbuffer, bufferbits)); + Inc(Target); + wroteone := True; + end { While }; + if (bufferbits >= 16) then + begin + if (target >= targetEnd) then + begin + Result := 2; + Break; + end; + end { If }; + if (base64EOF) then + begin + junk := READ_N_BITS(bufferbits, BITbuffer, bufferbits); + if (junk <> 0) then + begin + Result := 1; + end { If }; + end { If }; + end { If }; + if (not shifted) and (not done) then + begin + if (c = Integer('+')) then + begin + shifted := True; + first := True; + wroteone := False; + end { If } + else + begin + { It must be a directly encoded character. } + if (c > $7F) then + begin + Result := 1; + end { If }; + if (target >= targetEnd) then + begin + Result := 2; + break; + end { If }; + Target^ := WideChar(c); + Inc(Target); + end { Else }; + end { If }; + until (done); + sourceStart := source; + targetStart := target; +end; { ConvertUTF7toUCS2 } + + {*****************************************************************************} + { Thanks to Francisco Leong for providing the Pascal conversion of } + { ConvertUTF7.c (by David B. Goldsmith) } + {*****************************************************************************} + +resourcestring + SBufferOverflow = 'Buffer overflow'; + SInvalidUTF7 = 'Invalid UTF7'; + +function WideStringToUTF7(const W: WideString): AnsiString; +var + SourceStart, SourceEnd: PWideChar; + TargetStart, TargetEnd: PAnsiChar; +begin + if W = '' then + Result := '' + else + begin + SetLength(Result, Length(W) * 7); // Assume worst case + SourceStart := PWideChar(@W[1]); + SourceEnd := PWideChar(@W[Length(W)]) + 1; + TargetStart := PAnsiChar(@Result[1]); + TargetEnd := PAnsiChar(@Result[Length(Result)]) + 1; + if ConvertUCS2toUTF7(SourceStart, SourceEnd, TargetStart, + TargetEnd, True, False) <> 0 + then + raise ETntInternalError.Create(SBufferOverflow); + SetLength(Result, TargetStart - PAnsiChar(@Result[1])); + end; +end; + +function UTF7ToWideString(const S: AnsiString): WideString; +var + SourceStart, SourceEnd: PAnsiChar; + TargetStart, TargetEnd: PWideChar; +begin + if (S = '') then + Result := '' + else + begin + SetLength(Result, Length(S)); // Assume Worst case + SourceStart := PAnsiChar(@S[1]); + SourceEnd := PAnsiChar(@S[Length(S)]) + 1; + TargetStart := PWideChar(@Result[1]); + TargetEnd := PWideChar(@Result[Length(Result)]) + 1; + case ConvertUTF7toUCS2(SourceStart, SourceEnd, TargetStart, + TargetEnd) of + 1: raise ETntGeneralError.Create(SInvalidUTF7); + 2: raise ETntInternalError.Create(SBufferOverflow); + end; + SetLength(Result, TargetStart - PWideChar(@Result[1])); + end; +end; + +function StringToWideStringEx(const S: AnsiString; CodePage: Cardinal): WideString; +var + InputLength, + OutputLength: Integer; +begin + if CodePage = CP_UTF7 then + Result := UTF7ToWideString(S) // CP_UTF7 not supported on Windows 95 + else if CodePage = CP_UTF8 then + Result := UTF8ToWideString(S) // CP_UTF8 not supported on Windows 95 + else begin + InputLength := Length(S); + OutputLength := MultiByteToWideChar(CodePage, 0, PAnsiChar(S), InputLength, nil, 0); + SetLength(Result, OutputLength); + MultiByteToWideChar(CodePage, 0, PAnsiChar(S), InputLength, PWideChar(Result), OutputLength); + end; +end; + +function WideStringToStringEx(const WS: WideString; CodePage: Cardinal): AnsiString; +var + InputLength, + OutputLength: Integer; +begin + if CodePage = CP_UTF7 then + Result := WideStringToUTF7(WS) // CP_UTF7 not supported on Windows 95 + else if CodePage = CP_UTF8 then + Result := WideStringToUTF8(WS) // CP_UTF8 not supported on Windows 95 + else begin + InputLength := Length(WS); + OutputLength := WideCharToMultiByte(CodePage, 0, PWideChar(WS), InputLength, nil, 0, nil, nil); + SetLength(Result, OutputLength); + WideCharToMultiByte(CodePage, 0, PWideChar(WS), InputLength, PAnsiChar(Result), OutputLength, nil, nil); + end; +end; + +function UCS2ToWideString(const Value: AnsiString): WideString; +begin + if Length(Value) = 0 then + Result := '' + else + SetString(Result, PWideChar(@Value[1]), Length(Value) div SizeOf(WideChar)) +end; + +function WideStringToUCS2(const Value: WideString): AnsiString; +begin + if Length(Value) = 0 then + Result := '' + else + SetString(Result, PAnsiChar(@Value[1]), Length(Value) * SizeOf(WideChar)) +end; + +{ Windows.pas doesn't declare TranslateCharsetInfo() correctly. } +function TranslateCharsetInfo(lpSrc: PDWORD; var lpCs: TCharsetInfo; dwFlags: DWORD): BOOL; stdcall; external gdi32 name 'TranslateCharsetInfo'; + +function CharSetToCodePage(ciCharset: UINT): Cardinal; +var + C: TCharsetInfo; +begin + Win32Check(TranslateCharsetInfo(PDWORD(ciCharset), C, TCI_SRCCHARSET)); + Result := C.ciACP +end; + +function LCIDToCodePage(ALcid: LCID): Cardinal; +var + Buf: array[0..6] of AnsiChar; +begin + GetLocaleInfo(ALcid, LOCALE_IDefaultAnsiCodePage, Buf, 6); + Result := StrToIntDef(Buf, GetACP); +end; + +function KeyboardCodePage: Cardinal; +begin + Result := LCIDToCodePage(GetKeyboardLayout(0) and $FFFF); +end; + +function KeyUnicode(CharCode: Word): WideChar; +var + AChar: AnsiChar; +begin + // converts the given character (as it comes with a WM_CHAR message) into its + // corresponding Unicode character depending on the active keyboard layout + if CharCode <= Word(High(AnsiChar)) then begin + AChar := AnsiChar(CharCode); + MultiByteToWideChar(KeyboardCodePage, MB_USEGLYPHCHARS, @AChar, 1, @Result, 1); + end else + Result := WideChar(CharCode); +end; + +procedure StrSwapByteOrder(Str: PWideChar); +var + P: PWord; +begin + P := PWord(Str); + While (P^ <> 0) do begin + P^ := MakeWord(HiByte(P^), LoByte(P^)); + Inc(P); + end; +end; + +{$IFDEF USE_SYSTEM_OVERRIDES} + +//-------------------------------------------------------------------- +// LoadResString() +// +// This system function is used to retrieve a resourcestring and +// return the result as an AnsiString. If we believe that the result +// is only a temporary value, and that it will be immediately +// assigned to a WideString or a Variant, then we will save the +// Unicode result as well as a reference to the original Ansi string. +// WStrFromPCharLen() or VarFromLStr() will return this saved +// Unicode string if it appears to receive the most recent result +// of LoadResString. +//-------------------------------------------------------------------- + + + //=========================================================================================== + // + // function CodeMatchesPatternForUnicode(...); + // + // GIVEN: SomeWideString := SSomeResString; { WideString := resourcestring } + // + // Delphi will compile this statement into the following: + // ------------------------------------------------- + // TempAnsiString := LoadResString(@SSomeResString); + // LINE 1: lea edx,[SomeTempAnsiString] + // LINE 2: mov eax,[@SomeResString] + // LINE 3: call LoadResString + // + // WStrFromLStr(SomeWideString, TempAnsiString); { SomeWideString := TempAnsiString } + // LINE 4: mov edx,[SomeTempAnsiString] + // LINE 5: mov/lea eax [@SomeWideString] + // LINE 6: call @WStrFromLStr + // ------------------------------------------------- + // + // The order in which the parameters are prepared for WStrFromLStr (ie LINE 4 & 5) is + // reversed when assigning a non-temporary AnsiString to a WideString. + // + // This code, for example, results in LINE 4 and LINE 5 being swapped. + // + // SomeAnsiString := SSomeResString; + // SomeWideString := SomeAnsiString; + // + // Since we know the "signature" used by the compiler, we can detect this pattern. + // If we believe it is only temporary, we can save the Unicode results for later + // retrieval from WStrFromLStr. + // + // One final note: When assigning a resourcestring to a Variant, the same patterns exist. + //=========================================================================================== + +function CodeMatchesPatternForUnicode(PLine4: PAnsiChar): Boolean; +const + SIZEOF_OPCODE = 1 {byte}; + MOV_16_OPCODE = AnsiChar($8B); { we'll assume operand size is 16 bits } + MOV_32_OPCODE = AnsiChar($B8); { we'll assume operand size is 32 bits } + LEA_OPCODE = AnsiChar($8D); { operand size can be 16 or 40 bits } + CALL_OPCODE = AnsiChar($E8); { assumed operand size is 32 bits } + BREAK_OPCODE = AnsiChar($CC); {in a breakpoint} +var + PLine1: PAnsiChar; + PLine2: PAnsiChar; + PLine3: PAnsiChar; + DataSize: Integer; // bytes in first LEA operand +begin + Result := False; + + PLine3 := PLine4 - SizeOf(CALL_OPCODE) - 4; + PLine2 := PLine3 - SizeOf(MOV_32_OPCODE) - 4; + + // figure PLine1 and operand size + DataSize := 2; { try 16 bit operand for line 1 } + PLine1 := PLine2 - DataSize - SizeOf(LEA_OPCODE); + if (PLine1^ <> LEA_OPCODE) and (not (IsDebugging and (PLine1^ = BREAK_OPCODE))) then + begin + DataSize := 5; { try 40 bit operand for line 1 } + PLine1 := PLine2 - DataSize - SizeOf(LEA_OPCODE); + end; + if (PLine1^ = LEA_OPCODE) or (IsDebugging and (PLine1^ = BREAK_OPCODE)) then + begin + if CompareMem(PLine1 + SIZEOF_OPCODE, PLine4 + SIZEOF_OPCODE, DataSize) then + begin + // After this check, it seems to match the WideString <- (temp) AnsiString pattern + Result := True; // It is probably OK. (The side effects of being wrong aren't very bad.) + end; + end; +end; + +threadvar + PLastResString: PAnsiChar; + LastResStringValue: AnsiString; + LastWideResString: WideString; + +procedure FreeTntSystemThreadVars; +begin + LastResStringValue := ''; + LastWideResString := ''; +end; + +procedure Custom_System_EndThread(ExitCode: Integer); +begin + FreeTntSystemThreadVars; + {$IFDEF COMPILER_10_UP} + if Assigned(SystemThreadEndProc) then + SystemThreadEndProc(ExitCode); + {$ENDIF} + ExitThread(ExitCode); +end; + +function Custom_System_LoadResString(ResStringRec: PResStringRec): AnsiString; +var + ReturnAddr: Pointer; +begin + // get return address + asm + PUSH ECX + MOV ECX, [EBP + 4] + MOV ReturnAddr, ECX + POP ECX + end; + // check calling code pattern + if CodeMatchesPatternForUnicode(ReturnAddr) then begin + // result will probably be assigned to an intermediate AnsiString + // on its way to either a WideString or Variant. + LastWideResString := WideLoadResString(ResStringRec); + Result := LastWideResString; + LastResStringValue := Result; + if Result = '' then + PLastResString := nil + else + PLastResString := PAnsiChar(Result); + end else begin + // result will probably be assigned to an actual AnsiString variable. + PLastResString := nil; + Result := WideLoadResString(ResStringRec); + end; +end; + +//-------------------------------------------------------------------- +// WStrFromPCharLen() +// +// This system function is used to assign an AnsiString to a WideString. +// It has been modified to assign Unicode results from LoadResString. +// Another purpose of this function is to specify the code page. +//-------------------------------------------------------------------- + +procedure Custom_System_WStrFromPCharLen(var Dest: WideString; Source: PAnsiChar; Length: Integer); +var + DestLen: Integer; + Buffer: array[0..2047] of WideChar; + Local_PLastResString: Pointer; +begin + Local_PLastResString := PLastResString; + if (Local_PLastResString <> nil) + and (Local_PLastResString = Source) + and (System.Length(LastResStringValue) = Length) + and (LastResStringValue = Source) then begin + // use last unicode resource string + PLastResString := nil; { clear for further use } + Dest := LastWideResString; + end else begin + if Local_PLastResString <> nil then + PLastResString := nil; { clear for further use } + if Length <= 0 then + begin + Dest := ''; + Exit; + end; + if Length + 1 < High(Buffer) then + begin + DestLen := MultiByteToWideChar(DefaultSystemCodePage, 0, Source, Length, Buffer, + High(Buffer)); + if DestLen > 0 then + begin + SetLength(Dest, DestLen); + Move(Pointer(@Buffer[0])^, Pointer(Dest)^, DestLen * SizeOf(WideChar)); + Exit; + end; + end; + DestLen := (Length + 1); + SetLength(Dest, DestLen); // overallocate, trim later + DestLen := MultiByteToWideChar(DefaultSystemCodePage, 0, Source, Length, Pointer(Dest), + DestLen); + if DestLen < 0 then + DestLen := 0; + SetLength(Dest, DestLen); + end; +end; + +{$IFNDEF COMPILER_9_UP} + +//-------------------------------------------------------------------- +// LStrFromPWCharLen() +// +// This system function is used to assign an WideString to an AnsiString. +// It has not been modified from its original purpose other than to specify the code page. +//-------------------------------------------------------------------- + +procedure Custom_System_LStrFromPWCharLen(var Dest: AnsiString; Source: PWideChar; Length: Integer); +var + DestLen: Integer; + Buffer: array[0..4095] of AnsiChar; +begin + if Length <= 0 then + begin + Dest := ''; + Exit; + end; + if Length + 1 < (High(Buffer) div sizeof(WideChar)) then + begin + DestLen := WideCharToMultiByte(DefaultSystemCodePage, 0, Source, + Length, Buffer, High(Buffer), + nil, nil); + if DestLen >= 0 then + begin + SetLength(Dest, DestLen); + Move(Pointer(@Buffer[0])^, PAnsiChar(Dest)^, DestLen); + Exit; + end; + end; + + DestLen := (Length + 1) * sizeof(WideChar); + SetLength(Dest, DestLen); // overallocate, trim later + DestLen := WideCharToMultiByte(DefaultSystemCodePage, 0, Source, Length, Pointer(Dest), DestLen, + nil, nil); + if DestLen < 0 then + DestLen := 0; + SetLength(Dest, DestLen); +end; + +//-------------------------------------------------------------------- +// WStrToString() +// +// This system function is used to assign an WideString to an short string. +// It has not been modified from its original purpose other than to specify the code page. +//-------------------------------------------------------------------- + +procedure Custom_System_WStrToString(Dest: PShortString; const Source: WideString; MaxLen: Integer); +var + SourceLen, DestLen: Integer; + Buffer: array[0..511] of AnsiChar; +begin + if MaxLen > 255 then MaxLen := 255; + SourceLen := Length(Source); + if SourceLen >= MaxLen then SourceLen := MaxLen; + if SourceLen = 0 then + DestLen := 0 + else begin + DestLen := WideCharToMultiByte(DefaultSystemCodePage, 0, Pointer(Source), SourceLen, + Buffer, SizeOf(Buffer), nil, nil); + if DestLen > MaxLen then DestLen := MaxLen; + end; + Dest^[0] := Chr(DestLen); + if DestLen > 0 then Move(Buffer, Dest^[1], DestLen); +end; + +{$ENDIF} + +//-------------------------------------------------------------------- +// VarFromLStr() +// +// This system function is used to assign an AnsiString to a Variant. +// It has been modified to assign Unicode results from LoadResString. +//-------------------------------------------------------------------- + +procedure Custom_System_VarFromLStr(var V: TVarData; const Value: AnsiString); +const + varDeepData = $BFE8; +var + Local_PLastResString: Pointer; +begin + if (V.VType and varDeepData) <> 0 then + VarClear(PVariant(@V)^); + + Local_PLastResString := PLastResString; + if (Local_PLastResString <> nil) + and (Local_PLastResString = PAnsiChar(Value)) + and (LastResStringValue = Value) then begin + // use last unicode resource string + PLastResString := nil; { clear for further use } + V.VOleStr := nil; + V.VType := varOleStr; + WideString(Pointer(V.VOleStr)) := Copy(LastWideResString, 1, MaxInt); + end else begin + if Local_PLastResString <> nil then + PLastResString := nil; { clear for further use } + V.VString := nil; + V.VType := varString; + AnsiString(V.VString) := Value; + end; +end; + +{$IFNDEF COMPILER_9_UP} + +//-------------------------------------------------------------------- +// WStrCat3() A := B + C; +// +// This system function is used to concatenate two strings into one result. +// This function is added because A := '' + '' doesn't necessarily result in A = ''; +//-------------------------------------------------------------------- + +procedure Custom_System_WStrCat3(var Dest: WideString; const Source1, Source2: WideString); + + function NewWideString(CharLength: Longint): Pointer; + var + _NewWideString: function(CharLength: Longint): Pointer; + begin + asm + PUSH ECX + MOV ECX, offset System.@NewWideString; + MOV _NewWideString, ECX + POP ECX + end; + Result := _NewWideString(CharLength); + end; + + procedure WStrSet(var S: WideString; P: PWideChar); + var + Temp: Pointer; + begin + Temp := Pointer(InterlockedExchange(Integer(S), Integer(P))); + if Temp <> nil then + WideString(Temp) := ''; + end; + +var + Source1Len, Source2Len: Integer; + NewStr: PWideChar; +begin + Source1Len := Length(Source1); + Source2Len := Length(Source2); + if (Source1Len <> 0) or (Source2Len <> 0) then + begin + NewStr := NewWideString(Source1Len + Source2Len); + Move(Pointer(Source1)^, Pointer(NewStr)^, Source1Len * sizeof(WideChar)); + Move(Pointer(Source2)^, NewStr[Source1Len], Source2Len * sizeof(WideChar)); + WStrSet(Dest, NewStr); + end else + Dest := ''; +end; + +{$ENDIF} + +//-------------------------------------------------------------------- +// System proc replacements +//-------------------------------------------------------------------- + +type + POverwrittenData = ^TOverwrittenData; + TOverwrittenData = record + Location: Pointer; + OldCode: array[0..6] of Byte; + end; + +procedure OverwriteProcedure(OldProcedure, NewProcedure: pointer; Data: POverwrittenData = nil); +{ OverwriteProcedure originally from Igor Siticov } +{ Modified by Jacques Garcia Vazquez } +var + x: PAnsiChar; + y: integer; + ov2, ov: cardinal; + p: pointer; +begin + if Assigned(Data) and (Data.Location <> nil) then + exit; { procedure already overwritten } + + // need six bytes in place of 5 + x := PAnsiChar(OldProcedure); + if not VirtualProtect(Pointer(x), 6, PAGE_EXECUTE_READWRITE, @ov) then + RaiseLastOSError; + + // if a jump is present then a redirect is found + // $FF25 = jmp dword ptr [xxx] + // This redirect is normally present in bpl files, but not in exe files + p := OldProcedure; + + if Word(p^) = $25FF then + begin + Inc(Integer(p), 2); // skip the jump + // get the jump address p^ and dereference it p^^ + p := Pointer(Pointer(p^)^); + + // release the memory + if not VirtualProtect(Pointer(x), 6, ov, @ov2) then + RaiseLastOSError; + + // re protect the correct one + x := PAnsiChar(p); + if not VirtualProtect(Pointer(x), 6, PAGE_EXECUTE_READWRITE, @ov) then + RaiseLastOSError; + end; + + if Assigned(Data) then + begin + Move(x^, Data.OldCode, 6); + { Assign Location last so that Location <> nil only if OldCode is properly initialized. } + Data.Location := x; + end; + + x[0] := AnsiChar($E9); + y := integer(NewProcedure) - integer(p) - 5; + x[1] := AnsiChar(y and 255); + x[2] := AnsiChar((y shr 8) and 255); + x[3] := AnsiChar((y shr 16) and 255); + x[4] := AnsiChar((y shr 24) and 255); + + if not VirtualProtect(Pointer(x), 6, ov, @ov2) then + RaiseLastOSError; +end; + +procedure RestoreProcedure(OriginalProc: Pointer; Data: TOverwrittenData); +var + ov, ov2: Cardinal; +begin + if Data.Location <> nil then begin + if not VirtualProtect(Data.Location, 6, PAGE_EXECUTE_READWRITE, @ov) then + RaiseLastOSError; + Move(Data.OldCode, Data.Location^, 6); + if not VirtualProtect(Data.Location, 6, ov, @ov2) then + RaiseLastOSError; + end; +end; + +function Addr_System_EndThread: Pointer; +begin + Result := @System.EndThread; +end; + +function Addr_System_LoadResString: Pointer; +begin + Result := @System.LoadResString{TNT-ALLOW LoadResString}; +end; + +function Addr_System_WStrFromPCharLen: Pointer; +asm + mov eax, offset System.@WStrFromPCharLen; +end; + +{$IFNDEF COMPILER_9_UP} +function Addr_System_LStrFromPWCharLen: Pointer; +asm + mov eax, offset System.@LStrFromPWCharLen; +end; + +function Addr_System_WStrToString: Pointer; +asm + mov eax, offset System.@WStrToString; +end; +{$ENDIF} + +function Addr_System_VarFromLStr: Pointer; +asm + mov eax, offset System.@VarFromLStr; +end; + +function Addr_System_WStrCat3: Pointer; +asm + mov eax, offset System.@WStrCat3; +end; + +var + System_EndThread_Code, + System_LoadResString_Code, + System_WStrFromPCharLen_Code, + {$IFNDEF COMPILER_9_UP} + System_LStrFromPWCharLen_Code, + System_WStrToString_Code, + {$ENDIF} + System_VarFromLStr_Code + {$IFNDEF COMPILER_9_UP} + , + System_WStrCat3_Code, + SysUtils_WideFmtStr_Code + {$ENDIF} + : TOverwrittenData; + +procedure InstallEndThreadOverride; +begin + OverwriteProcedure(Addr_System_EndThread, @Custom_System_EndThread, @System_EndThread_Code); +end; + +procedure InstallStringConversionOverrides; +begin + OverwriteProcedure(Addr_System_WStrFromPCharLen, @Custom_System_WStrFromPCharLen, @System_WStrFromPCharLen_Code); + {$IFNDEF COMPILER_9_UP} + OverwriteProcedure(Addr_System_LStrFromPWCharLen, @Custom_System_LStrFromPWCharLen, @System_LStrFromPWCharLen_Code); + OverwriteProcedure(Addr_System_WStrToString, @Custom_System_WStrToString, @System_WStrToString_Code); + {$ENDIF} +end; + +procedure InstallWideResourceStrings; +begin + OverwriteProcedure(Addr_System_LoadResString, @Custom_System_LoadResString, @System_LoadResString_Code); + OverwriteProcedure(Addr_System_VarFromLStr, @Custom_System_VarFromLStr, @System_VarFromLStr_Code); +end; + +{$IFNDEF COMPILER_9_UP} +procedure InstallWideStringConcatenationFix; +begin + OverwriteProcedure(Addr_System_WStrCat3, @Custom_System_WStrCat3, @System_WStrCat3_Code); +end; + +procedure InstallWideFormatFixes; +begin + OverwriteProcedure(@SysUtils.WideFmtStr, @TntSysUtils.Tnt_WideFmtStr, @SysUtils_WideFmtStr_Code); +end; +{$ENDIF} + +procedure InstallTntSystemUpdates(Updates: TTntSystemUpdateSet = AllTntSystemUpdates); +begin + InstallEndThreadOverride; + if tsWideResourceStrings in Updates then begin + InstallStringConversionOverrides; + InstallWideResourceStrings; + end; + {$IFNDEF COMPILER_9_UP} + if tsFixImplicitCodePage in Updates then begin + InstallStringConversionOverrides; + { CP_ACP is the code page used by the non-Unicode Windows API. } + GDefaultSystemCodePage := CP_ACP{TNT-ALLOW CP_ACP}; + end; + if tsFixWideStrConcat in Updates then begin + InstallWideStringConcatenationFix; + end; + if tsFixWideFormat in Updates then begin + InstallWideFormatFixes; + end; + {$ENDIF} +end; + +{$IFNDEF COMPILER_9_UP} +var + StartupDefaultUserCodePage: Cardinal; +{$ENDIF} + +procedure UninstallSystemOverrides; +begin + RestoreProcedure(Addr_System_EndThread, System_EndThread_Code); + // String Conversion + RestoreProcedure(Addr_System_WStrFromPCharLen, System_WStrFromPCharLen_Code); + {$IFNDEF COMPILER_9_UP} + RestoreProcedure(Addr_System_LStrFromPWCharLen, System_LStrFromPWCharLen_Code); + RestoreProcedure(Addr_System_WStrToString, System_WStrToString_Code); + GDefaultSystemCodePage := StartupDefaultUserCodePage; + {$ENDIF} + // Wide resourcestring + RestoreProcedure(Addr_System_LoadResString, System_LoadResString_Code); + RestoreProcedure(Addr_System_VarFromLStr, System_VarFromLStr_Code); + {$IFNDEF COMPILER_9_UP} + // WideString concat fix + RestoreProcedure(Addr_System_WStrCat3, System_WStrCat3_Code); + // WideFormat fixes + RestoreProcedure(@SysUtils.WideFmtStr, SysUtils_WideFmtStr_Code); + {$ENDIF} +end; + +{$ENDIF USE_SYSTEM_OVERRIDES} + +initialization + {$IFDEF COMPILER_9_UP} + {$DEFINE USE_GETACP} + {$ENDIF} + {$IFDEF FPC} + {$DEFINE USE_GETACP} + {$ENDIF} + {$IFDEF USE_GETACP} + GDefaultSystemCodePage := GetACP; + {$ELSE} + {$IFDEF COMPILER_7_UP} + if (Win32Platform = VER_PLATFORM_WIN32_NT) and (Win32MajorVersion >= 5) then + GDefaultSystemCodePage := CP_THREAD_ACP // Win 2K/XP/... + else + GDefaultSystemCodePage := LCIDToCodePage(GetThreadLocale); // Win NT4/95/98/ME + {$ELSE} + GDefaultSystemCodePage := CP_ACP{TNT-ALLOW CP_ACP}; + {$ENDIF} + {$ENDIF} + {$IFDEF USE_SYSTEM_OVERRIDES} + {$IFNDEF COMPILER_9_UP} + StartupDefaultUserCodePage := DefaultSystemCodePage; + {$ENDIF} + IsDebugging := DebugHook > 0; + {$ENDIF USE_SYSTEM_OVERRIDES} + +finalization + {$IFDEF USE_SYSTEM_OVERRIDES} + UninstallSystemOverrides; + FreeTntSystemThreadVars; { Make MemorySleuth happy. } + {$ENDIF USE_SYSTEM_OVERRIDES} + +end. |