aboutsummaryrefslogtreecommitdiffstats
path: root/us_maker_edition/src/lib/JEDI-SDL/SDL/Pas/logger.pas
blob: ad9b24e6ab54aa831e503168e56bd116a73c2771 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
unit logger;
{
  $Id: logger.pas,v 1.2 2006/11/26 16:58:04 savage Exp $

}
{******************************************************************************}
{                                                                              }
{                Error Logging Unit                                            }
{                                                                              }
{ The initial developer of this Pascal code was :                              }
{ Dominique Louis <Dominique@SavageSoftware.com.au>                            }
{                                                                              }
{ Portions created by Dominique Louis are                                      }
{ Copyright (C) 2000 - 2001 Dominique Louis.                                   }
{                                                                              }
{                                                                              }
{                                                                              }
{ Contributor(s)                                                               }
{ --------------                                                               }
{                                                                              }
{                                                                              }
{ Obtained through:                                                            }
{ Joint Endeavour of Delphi Innovators ( Project JEDI )                        }
{                                                                              }
{ You may retrieve the latest version of this file at the Project              }
{ JEDI home page, located at http://delphi-jedi.org                            }
{                                                                              }
{ The contents of this file are used with permission, 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/MPL-1.1.html                                      }
{                                                                              }
{ 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.                                    }
{                                                                              }
{ Description                                                                  }
{ -----------                                                                  }
{   Logging functions...                                                       }
{                                                                              }
{                                                                              }
{ Requires                                                                     }
{ --------                                                                     }
{   SDL.dll on Windows platforms                                               }
{   libSDL-1.1.so.0 on Linux platform                                          }
{                                                                              }
{ Programming Notes                                                            }
{ -----------------                                                            }
{                                                                              }
{                                                                              }
{                                                                              }
{                                                                              }
{ Revision History                                                             }
{ ----------------                                                             }
{               2001 - DL : Initial creation                                   }
{         25/10/2001 - DRE : Added $M+ directive to allow published            }
{                                in classes. Added a compile directive         }
{                                around fmShareExclusive as this does not      }
{                                exist in Free Pascal                          }
{                                                                              }
{******************************************************************************}
{
  $Log: logger.pas,v $
  Revision 1.2  2006/11/26 16:58:04  savage
  Modifed to create separate log files. Therefore each instance running from the same directory will have their own individual log file, prepended with a number.

  Revision 1.1  2004/02/05 00:08:20  savage
  Module 1.0 release

  
}

{$I jedi-sdl.inc}

{$WEAKPACKAGEUNIT OFF}

interface

uses
  Classes,
  SysUtils;

type
  TLogger = class
  private
    FFileHandle : TextFile;
    FApplicationName : string;
    FApplicationPath : string;
  protected

  public
    constructor Create;
    destructor Destroy; override;
    function GetApplicationName: string;
    function GetApplicationPath: string;
    procedure LogError( ErrorMessage : string; Location : string );
    procedure LogWarning( WarningMessage : string; Location : string );
    procedure LogStatus( StatusMessage : string; Location : string );
  published
    property ApplicationName : string read GetApplicationName;
    property ApplicationPath : string read GetApplicationPath;
  end;

var
  Log : TLogger;

implementation

{ TLogger }
constructor TLogger.Create;
var
  FileName : string;
  FileNo : integer;
begin
  FApplicationName := ExtractFileName( ParamStr(0) );
  FApplicationPath := ExtractFilePath( ParamStr(0) );
  FileName := FApplicationPath + ChangeFileExt( FApplicationName, '.log' );
  FileNo := 0;
  while FileExists( FileName ) do
  begin
    inc( FileNo );
    FileName := FApplicationPath + IntToStr( FileNo ) + ChangeFileExt( FApplicationName, '.log' )
  end;
  AssignFile( FFileHandle, FileName );
  ReWrite( FFileHandle );
  (*inherited Create( FApplicationPath + ChangeFileExt( FApplicationName, '.log' ),
                    fmCreate {$IFNDEF FPC}or fmShareExclusive{$ENDIF} );*)
end;

destructor TLogger.Destroy;
begin
  CloseFile( FFileHandle );
  inherited;
end;

function TLogger.GetApplicationName: string;
begin
  result := FApplicationName;
end;

function TLogger.GetApplicationPath: string;
begin
  result := FApplicationPath;
end;

procedure TLogger.LogError(ErrorMessage, Location: string);
var
  S : string;
begin
  S := '*** ERROR *** : @ ' + TimeToStr(Time) + ' MSG : ' + ErrorMessage + ' IN : ' + Location + #13#10;
  WriteLn( FFileHandle,  S );
  Flush( FFileHandle );
end;

procedure TLogger.LogStatus(StatusMessage, Location: string);
var
  S : string;
begin
  S := 'STATUS INFO : @ ' + TimeToStr(Time) + ' MSG : ' + StatusMessage + ' IN : ' + Location + #13#10;
  WriteLn( FFileHandle,  S );
  Flush( FFileHandle );
end;

procedure TLogger.LogWarning(WarningMessage, Location: string);
var
  S : string;
begin
  S := '=== WARNING === : @ ' + TimeToStr(Time) + ' MSG : ' + WarningMessage + ' IN : ' + Location + #13#10;
  WriteLn( FFileHandle,  S );
  Flush( FFileHandle );
end;

initialization
begin
  Log := TLogger.Create;
  Log.LogStatus( 'Starting Application', 'Initialization' );
end;

finalization
begin
  Log.LogStatus( 'Terminating Application', 'Finalization' );
  Log.Free;
  Log := nil;
end;

end.