dao/DelphiScanner/Utils.pas

unit Utils;

interface
uses
  Controls,
  Graphics, //TColor
  IniFiles,
  Windows //TFileTime
  ;

type
  TStrArray = array of string;

  TUtils = class
    class function split(input: string; schar: Char; s: Integer): string;
    class function Explode(var a: TStrArray; Border, S: string): Integer;

    class procedure RoundCornerOf(Control: TWinControl);
    class function BarCodeValid (ACode: string): boolean;
    class function CheckSumModulo10(const data:string):string;

    class function TColorToHex(Color : TColor) : string;
    class function HexToTColor(sColor : string) : TColor;

    class function AdobeReaderExists(): Boolean;

    class function Sto_GetFmtFileVersion(const FileName: String = ''): String;

    class function CheckUrl(url:string): boolean;

    class function FileTime2DateTime(FileTime: TFileTime): TDateTime;

    class function GetComputerNameHelper() : String;

    class function GetCurrentUserName : string;

    class function URLEncode(const s : string) : string;


  end;

implementation

uses StrUtils,
  Types, //TRect ,
  Messages,
  SysUtils, //IntToStr etc
  Registry,
  wininet,   //CheckUrl

  HTTPApp //HTTPEncode


  ;

{
 VERY fast split function
 this function returns part of a string based on
 constant defineable delimiters, such as ";". So
 SPLIT('this is a test ',' ',3) = 'is' or
 SPLIT('data;another;yet;again;more;',';',4) = 'yet'

 Split function shifts index integer by two to
 be compatible with commonly used PD split function
 gpl 2004 / Juhani Suhonen
}
class function TUtils.split(input: string; schar: Char; s: Integer): string;
var
  c: array of Integer;
  b, t: Integer;
begin
  Dec(s, 2);  // for compatibility with very old & slow split function
  t := 0;     // variable T needs to be initialized...
  setlength(c, Length(input));
  for b := 0 to pred(High(c)) do
  begin
    c[b + 1] := posex(schar, input, succ(c[b]));
    // BREAK LOOP if posex looped (position before previous)
    // or wanted position reached..
    if (c[b + 1] < c[b]) or (s < t) then break
    else
      Inc(t);
  end;
  Result := Copy(input, succ(c[s]), pred(c[s + 1] - c[s]));
end;

class function TUtils.Explode(var a: TStrArray; Border, S: string): Integer;
var
  S2: string;
begin
  Result  := 0;
  S2 := S + Border;
  repeat
    SetLength(A, Length(A) + 1);
    a[Result] := Copy(S2, 0,Pos(Border, S2) - 1);
    Delete(S2, 1,Length(a[Result] + Border));
    Inc(Result);
  until S2 = '';
end;


class procedure TUtils.RoundCornerOf(Control: TWinControl);
var
   R: TRect;
   Rgn: HRGN;
begin
   with Control do
   begin
     R := ClientRect;
//     rgn := CreateRoundRectRgn(R.Left, R.Top, R.Right, R.Bottom, 20, 20) ;
     rgn := CreateRoundRectRgn(R.Left, R.Top, R.Right, R.Bottom, 25, 25) ;
//     rgn := CreateRoundRectRgn(R.Left, R.Top, R.Right, R.Bottom, 30, 30) ;
     Perform(EM_GETRECT, 0, lParam(@r)) ;
     InflateRect(r, - 4, - 4) ;
     Perform(EM_SETRECTNP, 0, lParam(@r)) ;
     SetWindowRgn(Handle, rgn, True) ;
     Invalidate;
   end;
end;


class function TUtils.BarCodeValid (ACode: string): boolean;
var
   I: integer;
   SumOdd, SumEven: integer;
   ADigit, AChecksumDigit: integer;
begin
   SumOdd := 0;
   SumEven := 0;
   for I := 1 to (Length (ACode) - 1) do begin
      ADigit := StrToIntDef (ACode [I], 0);
      if (I MOD 2 = 0) then begin
         SumEven := SumEven + ADigit;
      end else begin
         SumOdd := SumOdd + ADigit;
      end; {if}
   end; {for}
   AChecksumDigit := StrToIntDef (ACode [Length (ACode)], 0);
   Result := ((SumOdd*3 + SumEven + AChecksumDigit) MOD 10 = 0);
end; {--BarCodeValid--}

{ used for EAN 8/13 }
class function TUtils.CheckSumModulo10(const data:string):string;
        var i,fak,sum : Integer;
begin
        sum := 0;
        fak := Length(data);
        for i:=1 to Length(data) do
        begin
                if (fak mod 2) = 0 then
                        sum := sum + (StrToInt(data[i])*1)
                else
                        sum := sum + (StrToInt(data[i])*3);
                dec(fak);
        end;
        if (sum mod 10) = 0 then
                result := data+'0'
        else
                result := data+IntToStr(10-(sum mod 10));
end;


class function TUtils.TColorToHex(Color : TColor) : string;
begin
   Result :=
     IntToHex(GetRValue(Color), 2) +
     IntToHex(GetGValue(Color), 2) +
     IntToHex(GetBValue(Color), 2) ;
end;

class function TUtils.HexToTColor(sColor : string) : TColor;
begin
   Result :=
     RGB(
       StrToInt('$'+Copy(sColor, 1, 2)),
       StrToInt('$'+Copy(sColor, 3, 2)),
       StrToInt('$'+Copy(sColor, 5, 2))
     ) ;
end;


class function TUtils.AdobeReaderExists(): Boolean;
var
  AReg: TRegistry;
begin
  result:= false;
  AReg := TRegistry.Create;
  AReg.RootKey := HKEY_LOCAL_MACHINE;
  if AReg.KeyExists('\SOFTWARE\Adobe\Acrobat Reader') then
    result:= True;
  AReg.Free;
end;


/// <summary>
///   This function reads the file resource of "FileName" and returns
///   the version number as formatted text.</summary>
/// <example>
///   Sto_GetFmtFileVersion() = '4.13.128.0'
///   Sto_GetFmtFileVersion('', '%.2d-%.2d-%.2d') = '04-13-128'
/// </example>
/// <remarks>If "Fmt" is invalid, the function may raise an
///   EConvertError exception.</remarks>
/// <param name="FileName">Full path to exe or dll. If an empty
///   string is passed, the function uses the filename of the
///   running exe or dll.</param>
/// <param name="Fmt">Format string, you can use at most four integer
///   values.</param>
/// <returns>Formatted version number of file, '' if no version
///   resource found.</returns>
class function TUtils.Sto_GetFmtFileVersion(const FileName: String = ''): String;
var
  sFileName: String;
  iBufferSize: DWORD;
  iDummy: DWORD;
  pBuffer: Pointer;
  pFileInfo: Pointer;
  iVer: array[1..4] of Integer;
begin
  // set default value
  Result := '';
  // get filename of exe/dll if no filename is specified
  sFileName := Trim(FileName);
  if (sFileName = '') then
    sFileName := GetModuleName(HInstance);
  // get size of version info (0 if no version info exists)
  iBufferSize := GetFileVersionInfoSize(PChar(sFileName), iDummy);
  if (iBufferSize > 0) then
  begin
    GetMem(pBuffer, iBufferSize);
    try
    // get fixed file info (language independent)
    GetFileVersionInfo(PChar(sFileName), 0, iBufferSize, pBuffer);
    VerQueryValue(pBuffer, '\', pFileInfo, iDummy);
    // read version blocks
    iVer[1] := HiWord(PVSFixedFileInfo(pFileInfo)^.dwFileVersionMS);
    iVer[2] := LoWord(PVSFixedFileInfo(pFileInfo)^.dwFileVersionMS);
    iVer[3] := HiWord(PVSFixedFileInfo(pFileInfo)^.dwFileVersionLS);
    iVer[4] := LoWord(PVSFixedFileInfo(pFileInfo)^.dwFileVersionLS);
    finally
      FreeMem(pBuffer);
    end;

    // format result string
    Result := Format('%d.%d.%d.%d', [iVer[1], iVer[2], iVer[3], iVer[4]]);

  end;
end;


class function TUtils.CheckUrl(url:string):boolean;
var
  hSession, hfile: hInternet;
  dwindex,dwcodelen :dword;
  dwcode:array[1..20] of char;
  res : pchar;
begin
  if pos('http://',lowercase(url))=0 then
    url := 'http://'+url;
  Result := false;
  hSession := InternetOpen('InetURL:/1.0',
                            INTERNET_OPEN_TYPE_PRECONFIG,
                            nil,
                            nil,
                            0);
  if assigned(hsession) then
  begin
    hfile := InternetOpenUrl(hsession,
                             pchar(url),
                             nil,
                             0,
                             INTERNET_FLAG_RELOAD,
                             0);
    dwIndex := 0;
    dwCodeLen := 10;
    HttpQueryInfo(hfile,
                  HTTP_QUERY_STATUS_CODE,
                  @dwcode,
                  dwcodeLen,
                  dwIndex);
    res := pchar(@dwcode);
    result:= (res ='200') or (res ='302');
    if assigned(hfile) then
      InternetCloseHandle(hfile);
    InternetCloseHandle(hsession);
  end;

end;


class function TUtils.FileTime2DateTime(FileTime: TFileTime): TDateTime;
var
   LocalFileTime: TFileTime;
   SystemTime: TSystemTime;
begin
   FileTimeToLocalFileTime(FileTime, LocalFileTime) ;
   FileTimeToSystemTime(LocalFileTime, SystemTime) ;
   Result := SystemTimeToDateTime(SystemTime) ;
end;


class function TUtils.GetComputerNameHelper : String;
var
  buffer: array[0..255] of char;
  size: dword;
begin
  size := 256;
  if GetComputerName(buffer, size) then
    Result := buffer
  else
    Result := ''
end;

class function TUtils.GetCurrentUserName : string;
const
  cnMaxUserNameLen = 254;
var
  sUserName     : string;
  dwUserNameLen : DWord;
begin
  dwUserNameLen := cnMaxUserNameLen-1;
  SetLength( sUserName, cnMaxUserNameLen );
  GetUserName(PChar( sUserName ),dwUserNameLen );
  SetLength( sUserName, dwUserNameLen );
  Result := sUserName;
end;


class function TUtils.URLEncode(const s : string) : string;
begin
  result := HTTPEncode(s);
end;


end.
1	torben	2682	unit Utils;
2
3			interface
4			uses
5			Controls,
6	torben	2695	Graphics, //TColor
7			IniFiles,
8			Windows //TFileTime
9	torben	2682	;
10
11			type
12			TStrArray = array of string;
13
14			TUtils = class
15			class function split(input: string; schar: Char; s: Integer): string;
16			class function Explode(var a: TStrArray; Border, S: string): Integer;
17
18			class procedure RoundCornerOf(Control: TWinControl);
19			class function BarCodeValid (ACode: string): boolean;
20			class function CheckSumModulo10(const data:string):string;
21
22			class function TColorToHex(Color : TColor) : string;
23			class function HexToTColor(sColor : string) : TColor;
24
25	torben	2685	class function AdobeReaderExists(): Boolean;
26	torben	2682
27	torben	2693	class function Sto_GetFmtFileVersion(const FileName: String = ''): String;
28	torben	2682
29	torben	2694	class function CheckUrl(url:string): boolean;
30	torben	2682
31	torben	2695	class function FileTime2DateTime(FileTime: TFileTime): TDateTime;
32	torben	2685
33	torben	2996	class function GetComputerNameHelper() : String;
34	torben	2693
35	torben	2996	class function GetCurrentUserName : string;
36	torben	2694
37	torben	2996	class function URLEncode(const s : string) : string;
38	torben	2695
39	torben	2996
40	torben	2682	end;
41
42			implementation
43
44			uses StrUtils,
45			Types, //TRect ,
46			Messages,
47	torben	2685	SysUtils, //IntToStr etc
48	torben	2694	Registry,
49	torben	2996	wininet, //CheckUrl
50	torben	2685
51	torben	2996	HTTPApp //HTTPEncode
52
53
54	torben	2682	;
55
56			{
57			VERY fast split function
58			this function returns part of a string based on
59			constant defineable delimiters, such as ";". So
60			SPLIT('this is a test ',' ',3) = 'is' or
61			SPLIT('data;another;yet;again;more;',';',4) = 'yet'
62
63			Split function shifts index integer by two to
64			be compatible with commonly used PD split function
65			gpl 2004 / Juhani Suhonen
66			}
67			class function TUtils.split(input: string; schar: Char; s: Integer): string;
68			var
69			c: array of Integer;
70			b, t: Integer;
71			begin
72			Dec(s, 2); // for compatibility with very old & slow split function
73			t := 0; // variable T needs to be initialized...
74			setlength(c, Length(input));
75			for b := 0 to pred(High(c)) do
76			begin
77			c[b + 1] := posex(schar, input, succ(c[b]));
78			// BREAK LOOP if posex looped (position before previous)
79			// or wanted position reached..
80			if (c[b + 1] < c[b]) or (s < t) then break
81			else
82			Inc(t);
83			end;
84			Result := Copy(input, succ(c[s]), pred(c[s + 1] - c[s]));
85			end;
86
87			class function TUtils.Explode(var a: TStrArray; Border, S: string): Integer;
88			var
89			S2: string;
90			begin
91			Result := 0;
92			S2 := S + Border;
93			repeat
94			SetLength(A, Length(A) + 1);
95			a[Result] := Copy(S2, 0,Pos(Border, S2) - 1);
96			Delete(S2, 1,Length(a[Result] + Border));
97			Inc(Result);
98			until S2 = '';
99			end;
100
101
102
103			class procedure TUtils.RoundCornerOf(Control: TWinControl);
104			var
105			R: TRect;
106			Rgn: HRGN;
107			begin
108			with Control do
109			begin
110			R := ClientRect;
111			// rgn := CreateRoundRectRgn(R.Left, R.Top, R.Right, R.Bottom, 20, 20) ;
112			rgn := CreateRoundRectRgn(R.Left, R.Top, R.Right, R.Bottom, 25, 25) ;
113			// rgn := CreateRoundRectRgn(R.Left, R.Top, R.Right, R.Bottom, 30, 30) ;
114			Perform(EM_GETRECT, 0, lParam(@r)) ;
115			InflateRect(r, - 4, - 4) ;
116			Perform(EM_SETRECTNP, 0, lParam(@r)) ;
117			SetWindowRgn(Handle, rgn, True) ;
118			Invalidate;
119			end;
120			end;
121
122
123			class function TUtils.BarCodeValid (ACode: string): boolean;
124			var
125			I: integer;
126			SumOdd, SumEven: integer;
127			ADigit, AChecksumDigit: integer;
128			begin
129			SumOdd := 0;
130			SumEven := 0;
131			for I := 1 to (Length (ACode) - 1) do begin
132			ADigit := StrToIntDef (ACode [I], 0);
133			if (I MOD 2 = 0) then begin
134			SumEven := SumEven + ADigit;
135			end else begin
136			SumOdd := SumOdd + ADigit;
137			end; {if}
138			end; {for}
139			AChecksumDigit := StrToIntDef (ACode [Length (ACode)], 0);
140			Result := ((SumOdd*3 + SumEven + AChecksumDigit) MOD 10 = 0);
141			end; {--BarCodeValid--}
142
143			{ used for EAN 8/13 }
144			class function TUtils.CheckSumModulo10(const data:string):string;
145			var i,fak,sum : Integer;
146			begin
147			sum := 0;
148			fak := Length(data);
149			for i:=1 to Length(data) do
150			begin
151			if (fak mod 2) = 0 then
152			sum := sum + (StrToInt(data[i])*1)
153			else
154			sum := sum + (StrToInt(data[i])*3);
155			dec(fak);
156			end;
157			if (sum mod 10) = 0 then
158			result := data+'0'
159			else
160			result := data+IntToStr(10-(sum mod 10));
161			end;
162
163
164			class function TUtils.TColorToHex(Color : TColor) : string;
165			begin
166			Result :=
167			IntToHex(GetRValue(Color), 2) +
168			IntToHex(GetGValue(Color), 2) +
169			IntToHex(GetBValue(Color), 2) ;
170			end;
171
172			class function TUtils.HexToTColor(sColor : string) : TColor;
173			begin
174			Result :=
175			RGB(
176			StrToInt('$'+Copy(sColor, 1, 2)),
177			StrToInt('$'+Copy(sColor, 3, 2)),
178			StrToInt('$'+Copy(sColor, 5, 2))
179			) ;
180			end;
181
182
183	torben	2685	class function TUtils.AdobeReaderExists(): Boolean;
184			var
185			AReg: TRegistry;
186			begin
187			result:= false;
188			AReg := TRegistry.Create;
189			AReg.RootKey := HKEY_LOCAL_MACHINE;
190			if AReg.KeyExists('\SOFTWARE\Adobe\Acrobat Reader') then
191			result:= True;
192			AReg.Free;
193			end;
194
195	torben	2693
196			/// <summary>
197			/// This function reads the file resource of "FileName" and returns
198			/// the version number as formatted text.</summary>
199			/// <example>
200			/// Sto_GetFmtFileVersion() = '4.13.128.0'
201			/// Sto_GetFmtFileVersion('', '%.2d-%.2d-%.2d') = '04-13-128'
202			/// </example>
203			/// <remarks>If "Fmt" is invalid, the function may raise an
204			/// EConvertError exception.</remarks>
205			/// <param name="FileName">Full path to exe or dll. If an empty
206			/// string is passed, the function uses the filename of the
207			/// running exe or dll.</param>
208			/// <param name="Fmt">Format string, you can use at most four integer
209			/// values.</param>
210			/// <returns>Formatted version number of file, '' if no version
211			/// resource found.</returns>
212			class function TUtils.Sto_GetFmtFileVersion(const FileName: String = ''): String;
213			var
214			sFileName: String;
215			iBufferSize: DWORD;
216			iDummy: DWORD;
217			pBuffer: Pointer;
218			pFileInfo: Pointer;
219			iVer: array[1..4] of Integer;
220			begin
221			// set default value
222			Result := '';
223			// get filename of exe/dll if no filename is specified
224			sFileName := Trim(FileName);
225			if (sFileName = '') then
226			sFileName := GetModuleName(HInstance);
227			// get size of version info (0 if no version info exists)
228			iBufferSize := GetFileVersionInfoSize(PChar(sFileName), iDummy);
229			if (iBufferSize > 0) then
230			begin
231			GetMem(pBuffer, iBufferSize);
232			try
233			// get fixed file info (language independent)
234			GetFileVersionInfo(PChar(sFileName), 0, iBufferSize, pBuffer);
235			VerQueryValue(pBuffer, '\', pFileInfo, iDummy);
236			// read version blocks
237			iVer[1] := HiWord(PVSFixedFileInfo(pFileInfo)^.dwFileVersionMS);
238			iVer[2] := LoWord(PVSFixedFileInfo(pFileInfo)^.dwFileVersionMS);
239			iVer[3] := HiWord(PVSFixedFileInfo(pFileInfo)^.dwFileVersionLS);
240			iVer[4] := LoWord(PVSFixedFileInfo(pFileInfo)^.dwFileVersionLS);
241			finally
242			FreeMem(pBuffer);
243			end;
244
245			// format result string
246			Result := Format('%d.%d.%d.%d', [iVer[1], iVer[2], iVer[3], iVer[4]]);
247
248			end;
249			end;
250
251
252	torben	2694	class function TUtils.CheckUrl(url:string):boolean;
253			var
254			hSession, hfile: hInternet;
255			dwindex,dwcodelen :dword;
256			dwcode:array[1..20] of char;
257			res : pchar;
258			begin
259			if pos('http://',lowercase(url))=0 then
260			url := 'http://'+url;
261			Result := false;
262			hSession := InternetOpen('InetURL:/1.0',
263			INTERNET_OPEN_TYPE_PRECONFIG,
264			nil,
265			nil,
266			0);
267			if assigned(hsession) then
268			begin
269			hfile := InternetOpenUrl(hsession,
270			pchar(url),
271			nil,
272			0,
273			INTERNET_FLAG_RELOAD,
274			0);
275			dwIndex := 0;
276			dwCodeLen := 10;
277			HttpQueryInfo(hfile,
278			HTTP_QUERY_STATUS_CODE,
279			@dwcode,
280			dwcodeLen,
281			dwIndex);
282			res := pchar(@dwcode);
283			result:= (res ='200') or (res ='302');
284			if assigned(hfile) then
285			InternetCloseHandle(hfile);
286			InternetCloseHandle(hsession);
287			end;
288
289			end;
290
291	torben	2695
292			class function TUtils.FileTime2DateTime(FileTime: TFileTime): TDateTime;
293			var
294			LocalFileTime: TFileTime;
295			SystemTime: TSystemTime;
296			begin
297			FileTimeToLocalFileTime(FileTime, LocalFileTime) ;
298			FileTimeToSystemTime(LocalFileTime, SystemTime) ;
299			Result := SystemTimeToDateTime(SystemTime) ;
300			end;
301
302
303	torben	2996	class function TUtils.GetComputerNameHelper : String;
304			var
305			buffer: array[0..255] of char;
306			size: dword;
307			begin
308			size := 256;
309			if GetComputerName(buffer, size) then
310			Result := buffer
311			else
312			Result := ''
313			end;
314
315			class function TUtils.GetCurrentUserName : string;
316			const
317			cnMaxUserNameLen = 254;
318			var
319			sUserName : string;
320			dwUserNameLen : DWord;
321			begin
322			dwUserNameLen := cnMaxUserNameLen-1;
323			SetLength( sUserName, cnMaxUserNameLen );
324			GetUserName(PChar( sUserName ),dwUserNameLen );
325			SetLength( sUserName, dwUserNameLen );
326			Result := sUserName;
327			end;
328
329
330			class function TUtils.URLEncode(const s : string) : string;
331			begin
332			result := HTTPEncode(s);
333			end;
334
335
336	torben	2682	end.