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	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	class function AdobeReaderExists(): Boolean;
24
25	class function Sto_GetFmtFileVersion(const FileName: String = ''): String;
26
27	class function CheckUrl(url:string): boolean;
28
29
30
31
32	end;
33
34	implementation
35
36	uses StrUtils,
37	Types, //TRect ,
38	Windows,
39	Messages,
40	SysUtils, //IntToStr etc
41	Registry,
42	wininet //CheckUrl
43
44	;
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	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
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	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	end.