dao/DelphiScanner/Utils.pas

unit Utils;

interface
uses
  Controls,
  Graphics //TColor
  ;

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;


  end;

implementation

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

  ;

{
 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;

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