1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 //

    18 // just for simple use,

    19 // this file doesn't following any code convensions or symbian rules.

    20 //

    21 

    22 #ifndef __DLL_LOGGER_H__

    23 #define __DLL_LOGGER_H__

    24 

    25 #include <f32file.h>  // link against efsrv.lib

    26 #include <eikenv.h>

    27 

    28 #define CERR    StreamLogger::begin()

    29 

    30 /**

    31 * usage: StreamLogger::begin()<<"your string"<<yourNumber<<...<<end;

    32 */

    33 class StreamLogger{

    34 

    35     //

    36     // internel class

    37     // use RAII instead of symbian 2 phases contruction.

    38     //

    39     class LogFile{

    40     public:

    41         LogFile()

    42         {

    43             _LIT( KLogFile, "C:\\debug.log" );

    44             RFs& fs = CEikonEnv::Static()->FsSession();

    45             if ( file.Open( fs, KLogFile, EFileWrite | EFileShareAny ) != KErrNone )

    46                 file.Create( fs, KLogFile, EFileWrite | EFileShareAny );

    47 

    48             TInt pos=0;  // this must be 0

    49             file.Seek( ESeekEnd, pos );

    50         }

    51 

    52         ~LogFile(){

    53             file.Close();

    54         }

    55 

    56         RFile& operator()(){ return file; }

    57     private:

    58         RFile file;

    59     };

    60 

    61 public:

    62     ~StreamLogger(){}

    63 

    64     static StreamLogger& begin(){

    65         StreamLogger* self = new (ELeave) StreamLogger;

    66         return *self;

    67     }

    68 

    69     void suicide(){ delete this; }

    70 

    71     StreamLogger& operator<<(const TDesC& aText){

    72         LogFile file;

    73 

    74         HBufC8* text = HBufC8::NewL( aText.Length() );

    75         TPtr8 textPtr = text->Des();

    76         textPtr.Copy( aText );

    77         file().Write( *text );

    78         delete text;

    79 

    80         return *this;

    81     }

    82 

    83     StreamLogger& operator<<(TInt n){

    84         LogFile file;

    85 

    86         TInt i=1;

    87         for(TInt v=n; v!=0; ++i, v/=10){}

    88         HBufC* text = HBufC::NewL( i );

    89         TPtr textPtr = text->Des();

    90 

    91         _LIT(KFmt, "%d");

    92         textPtr.Format( KFmt, n );

    93         HBufC8*  text8 = HBufC8::NewL( textPtr.Length() );

    94         TPtr8 textPtr8 = text8->Des();

    95         textPtr8.Copy(*text);

    96 

    97         file().Write( *text8 );

    98         delete text;

    99         delete text8;

   100 

   101         return *this;

   102     }

   103 

   104     StreamLogger& cr(){

   105         LogFile file;

   106         TBuf8<2> enter;

   107         enter.Append( 13 );

   108         enter.Append( 10 );

   109         file().Write( enter );

   110         return *this;

   111     }

   112 

   113     typedef StreamLogger& (*_Manipulator)(StreamLogger&);

   114     StreamLogger& operator<<(_Manipulator op){ return op(*this); }

   115 

   116 private:

   117     StreamLogger(){}    //disable ctor

   118 };

   119 

   120 inline StreamLogger& end(StreamLogger& self){ self.suicide(); return self; }

   121 

   122 inline StreamLogger& endl(StreamLogger& self){ self.cr(); return self; }

   123 

   124 #endif //__FILE_LOGGER_H__