{
    Free Pascal port of the OpenPTC C++ library.
    Copyright (C) 2001-2003  Nikolay Nikolov (nickysn@users.sourceforge.net)
    Original C++ version by Glenn Fiedler (ptc@gaffer.org)

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
}

{$IFDEF PTC_LOGGING}

Const
  LOG_create : Boolean = True;
  LOG_enabled : Boolean =
{$IFDEF DEBUG}
  True;
{$ELSE DEBUG}
  False;
{$ENDIF DEBUG}

Var
  LOG_file : Text;

Procedure LOG_open;

Begin
  ASSignFile(LOG_file, 'ptc.log');
  If LOG_create Then
  Begin
    Rewrite(LOG_file);
    Writeln(LOG_file, '[log start]');
    LOG_create := False;
  End
  Else
    Append(LOG_file);
End;

Procedure LOG_close;

Begin
  CloseFile(LOG_file);
End;

Procedure LOG(message : String);

Begin
  If Not LOG_enabled Then
    Exit;
  LOG_open;
  Writeln(LOG_file, message);
  LOG_close;
End;

Procedure LOG(message : String; data : Boolean);

Begin
  If Not LOG_enabled Then
    Exit;
  LOG_open;
  Write(LOG_file, message, ' = ');
  If data Then
    Writeln(LOG_file, 'true')
  Else
    Writeln(LOG_file, 'false');
  LOG_close;
End;

Procedure LOG(message : String; data : Integer);

Begin
  If Not LOG_enabled Then
    Exit;
  LOG_open;
  Writeln(LOG_file, message, ' = ', data);
  LOG_close;
End;

Procedure LOG(message : String; data : Double);

Begin
  If Not LOG_enabled Then
    Exit;
  LOG_open;
  Writeln(LOG_file, message, ' = ', data);
  LOG_close;
End;

Procedure LOG(message : String; data : String);

Begin
  If Not LOG_enabled Then
    Exit;
  LOG_open;
  Writeln(LOG_file, message, ' = ', data);
  LOG_close;
End;

Procedure LOG(message : String; data : TPTCFormat);

Begin
  If Not LOG_enabled Then
    Exit;
  LOG_open;
  Write(LOG_file, message, ' = Format(');
  If data = Nil Then
    Write(LOG_file, 'NIL')
  Else
  Begin
    Write(LOG_file, data.bits:2);
    If data.direct Then
    Begin
      Write(LOG_file, ',$', HexStr(data.r, 8), ',$', HexStr(data.g, 8), ',$', HexStr(data.b, 8));
      If data.a <> 0 Then
        Write(LOG_file, ',$', HexStr(data.a, 8));
    End;
  End;
  Writeln(LOG_file, ')');
  LOG_close;
End;

Procedure LOG(message : String; data : TPTCError);

Begin
  If Not LOG_enabled Then
    Exit;
  LOG_open;
  Writeln(LOG_file, message, ': ', data.message);
  LOG_close;
End;

{$ELSE PTC_LOGGING}
{$DEFINE LOG:=//}
{$ENDIF PTC_LOGGING}