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|
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.
|
