examples/Delphi/ExEnumFU.pas

(* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is TurboPower SysTools
 *
 * The Initial Developer of the Original Code is
 * TurboPower Software
 *
 * Portions created by the Initial Developer are Copyright (C) 1996-2002
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * ***** END LICENSE BLOCK ***** *)

unit ExEnumFU;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls,
  Forms, Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    Edit1: TEdit;
    CheckBox1: TCheckBox;
    ListBox1: TListBox;
    Label1: TLabel;
    CheckBox2: TCheckBox;
    Button2: TButton;
    procedure FormCreate(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
    AList : TStringList;
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

uses
  StConst,
  StBase,
  StSystem;

var
  StopIt : Boolean;

function ProcessAll(const SR : TSearchRec; ForInclusion : Boolean;
  var Abort : Boolean) : Boolean;
begin
  Abort := False;
  if StopIt then begin
    Abort := True;
    Result := False;
  end
  else begin
    Application.ProcessMessages;
    Result := True;
  end;
end;

function TextFilesOnly(const SR : TSearchRec; ForInclusion : Boolean;
  var Abort : Boolean) : Boolean;
var
  S : String;
begin
  Abort := False;
  if StopIt then begin
    Abort := True;
    Result := False;
  end
  else begin
    Application.ProcessMessages;

    if ForInclusion then begin
      Result := False;
      S := SR.Name;
      if (UpperCase(ExtractFileExt(S)) = '.TXT') or
         ((SR.Attr and faDirectory) > 0) then
        Result := True;
    end
    else
      Result := True;

  end;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  AList := TStringList.Create;
  Edit1.Text := 'C:\';
end;

procedure TForm1.Button1Click(Sender: TObject);
var
  I : longint;
begin
  AList.Clear;
  ListBox1.Clear;

  Screen.Cursor := crHourGlass;
  StopIt := False;

  if not CheckBox2.Checked then begin
    EnumerateFiles(Edit1.Text, AList, CheckBox1.Checked, ProcessAll);
    ListBox1.Items := AList;
  end else begin
    EnumerateFiles(Edit1.Text, AList, CheckBox1.Checked, TextFilesOnly);
    {by its nature, EnumerateFiles also returns directory names}
    {remove those from the list - leaving only the text files}
    for I := 0 to AList.Count-1 do
      if (UpperCase(ExtractFileExt(AList[I])) = '.TXT') then
        ListBox1.Items.Add(AList[I]);
  end;

  Screen.Cursor := crDefault;
  ListBox1.Update;
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  StopIt := True;
end;

procedure TForm1.FormDestroy(Sender: TObject);
begin
  AList.Free;
end;

end.
1	torben	2671	(* *** BEGIN LICENSE BLOCK ***
2			* Version: MPL 1.1
3			*
4			* The contents of this file are subject to the Mozilla Public License Version
5			* 1.1 (the "License"); you may not use this file except in compliance with
6			* the License. You may obtain a copy of the License at
7			* http://www.mozilla.org/MPL/
8			*
9			* Software distributed under the License is distributed on an "AS IS" basis,
10			* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
11			* for the specific language governing rights and limitations under the
12			* License.
13			*
14			* The Original Code is TurboPower SysTools
15			*
16			* The Initial Developer of the Original Code is
17			* TurboPower Software
18			*
19			* Portions created by the Initial Developer are Copyright (C) 1996-2002
20			* the Initial Developer. All Rights Reserved.
21			*
22			* Contributor(s):
23			*
24			* *** END LICENSE BLOCK *** *)
25
26			unit ExEnumFU;
27
28			interface
29
30			uses
31			Windows, Messages, SysUtils, Classes, Graphics, Controls,
32			Forms, Dialogs, StdCtrls;
33
34			type
35			TForm1 = class(TForm)
36			Button1: TButton;
37			Edit1: TEdit;
38			CheckBox1: TCheckBox;
39			ListBox1: TListBox;
40			Label1: TLabel;
41			CheckBox2: TCheckBox;
42			Button2: TButton;
43			procedure FormCreate(Sender: TObject);
44			procedure Button1Click(Sender: TObject);
45			procedure Button2Click(Sender: TObject);
46			procedure FormDestroy(Sender: TObject);
47			private
48			{ Private declarations }
49			public
50			{ Public declarations }
51			AList : TStringList;
52			end;
53
54			var
55			Form1: TForm1;
56
57			implementation
58
59			{$R *.DFM}
60
61			uses
62			StConst,
63			StBase,
64			StSystem;
65
66			var
67			StopIt : Boolean;
68
69			function ProcessAll(const SR : TSearchRec; ForInclusion : Boolean;
70			var Abort : Boolean) : Boolean;
71			begin
72			Abort := False;
73			if StopIt then begin
74			Abort := True;
75			Result := False;
76			end
77			else begin
78			Application.ProcessMessages;
79			Result := True;
80			end;
81			end;
82
83			function TextFilesOnly(const SR : TSearchRec; ForInclusion : Boolean;
84			var Abort : Boolean) : Boolean;
85			var
86			S : String;
87			begin
88			Abort := False;
89			if StopIt then begin
90			Abort := True;
91			Result := False;
92			end
93			else begin
94			Application.ProcessMessages;
95
96			if ForInclusion then begin
97			Result := False;
98			S := SR.Name;
99			if (UpperCase(ExtractFileExt(S)) = '.TXT') or
100			((SR.Attr and faDirectory) > 0) then
101			Result := True;
102			end
103			else
104			Result := True;
105
106			end;
107			end;
108
109			procedure TForm1.FormCreate(Sender: TObject);
110			begin
111			AList := TStringList.Create;
112			Edit1.Text := 'C:\';
113			end;
114
115			procedure TForm1.Button1Click(Sender: TObject);
116			var
117			I : longint;
118			begin
119			AList.Clear;
120			ListBox1.Clear;
121
122			Screen.Cursor := crHourGlass;
123			StopIt := False;
124
125			if not CheckBox2.Checked then begin
126			EnumerateFiles(Edit1.Text, AList, CheckBox1.Checked, ProcessAll);
127			ListBox1.Items := AList;
128			end else begin
129			EnumerateFiles(Edit1.Text, AList, CheckBox1.Checked, TextFilesOnly);
130			{by its nature, EnumerateFiles also returns directory names}
131			{remove those from the list - leaving only the text files}
132			for I := 0 to AList.Count-1 do
133			if (UpperCase(ExtractFileExt(AList[I])) = '.TXT') then
134			ListBox1.Items.Add(AList[I]);
135			end;
136
137			Screen.Cursor := crDefault;
138			ListBox1.Update;
139			end;
140
141			procedure TForm1.Button2Click(Sender: TObject);
142			begin
143			StopIt := True;
144			end;
145
146			procedure TForm1.FormDestroy(Sender: TObject);
147			begin
148			AList.Free;
149			end;
150
151			end.