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	unit Utils;
2
3	interface
4	uses
5	Controls,
6	Graphics, //TColor
7	IniFiles,
8	Windows //TFileTime
9	;
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	class function AdobeReaderExists(): Boolean;
26
27	class function Sto_GetFmtFileVersion(const FileName: String = ''): String;
28
29	class function CheckUrl(url:string): boolean;
30
31	class function FileTime2DateTime(FileTime: TFileTime): TDateTime;
32
33	class function GetComputerNameHelper() : String;
34
35	class function GetCurrentUserName : string;
36
37	class function URLEncode(const s : string) : string;
38
39
40	end;
41
42	implementation
43
44	uses StrUtils,
45	Types, //TRect ,
46	Messages,
47	SysUtils, //IntToStr etc
48	Registry,
49	wininet, //CheckUrl
50
51	HTTPApp //HTTPEncode
52
53
54	;
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	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
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	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
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	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	end.