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 using System;

    18 using System.Collections.Generic;

    19 using System.Collections.ObjectModel;

    20 using System.Text;

    21 using System.IO;

    22 using SymbianUtils;

    23 using SymbianUtils.Streams;

    24 using SymbianUtils.Tracer;

    25 using SymbianStructuresLib.Compression.Common;

    26 using SymbianImageLib.Common.Content;

    27 using SymbianImageLib.Common.Image;

    28 using SymbianImageLib.Common.Header;

    29 using SymbianImageLib.Common.Streams;

    30 using SymbianImageLib.ROFS.Content;

    31 using SymbianImageLib.ROFS.Header;

    32 using SymbianImageLib.ROFS.Structures;

    33 

    34 namespace SymbianImageLib.ROFS.Image

    35 {

    36     public class SIROFS : SIImage

    37     {

    38         #region Constructors

    39         public SIROFS( ITracer aTracer, Stream aStream, string aName )

    40             : base( aTracer, new SIStream( aStream ), aName )

    41         {

    42             base.Trace( "[SymbianImageROFS] Ctor() - START" );

    43             iHeader = SIHeaderROF.New( this, aStream );

    44 

    45             ReadFiles();

    46             base.Trace( "[SymbianImageROFS] Ctor() - END" );

    47         }

    48         #endregion

    49 

    50         #region From SIImage

    51         public override SIHeader Header

    52         {

    53             get { return iHeader; }

    54         }

    55         #endregion

    56 

    57         #region API

    58         public static bool IsROFS( Stream aStream )

    59         {

    60             bool ret = false;

    61             //

    62             try

    63             {

    64                 ret = SIHeaderROF.IsROFS( aStream );

    65             }

    66             catch ( Exception )

    67             {

    68             }

    69             //

    70             return ret;

    71         }

    72         #endregion

    73 

    74         #region Properties

    75         #endregion

    76 

    77         #region Internal methods

    78         private void ReadFiles()

    79         {

    80             base.Trace( "[SymbianImageROFS] ReadFiles() - reading directory tree..." );

    81             using ( SymbianStreamReaderLE reader = SymbianStreamReaderLE.New( (Stream) base.Stream ) )

    82             {

    83                 reader.Seek( iHeader.InternalHeader.DirTreeOffset, SeekOrigin.Begin );

    84                 TRofsDir rootDirectory = new TRofsDir( string.Empty, (uint) reader.Position, reader, this );

    85 

    86                 base.Trace( "[SymbianImageROFS] ReadFiles() - converting directory tree to full full paths..." );

    87                 MakeFilesForDirectory( rootDirectory, string.Empty );

    88             }

    89         }

    90 

    91         private void MakeFilesForDirectory( TRofsDir aDirectory, string aParentDirectoryName )

    92         {

    93             string name = aParentDirectoryName + @"\";

    94 

    95             // Create files

    96             StringBuilder fullName = new StringBuilder();

    97             foreach ( TRofsEntry entry in aDirectory )

    98             {

    99                 fullName.Length = 0;

   100                 fullName.Append( name );

   101                 fullName.Append( entry.Name );

   102                 //

   103                 SIContent file = SIContentFactoryROFS.New( this, fullName.ToString(), entry.FileSize, entry.FileAddress, entry.Uids );

   104                 base.RegisterFile( file );

   105             }

   106 

   107             // Create files in any subdirs

   108             foreach ( TRofsDir subdir in aDirectory.SubDirectories )

   109             {

   110                 MakeFilesForDirectory( subdir, name + subdir.Name );

   111             }

   112         }

   113         #endregion

   114 

   115         #region Data members

   116         private readonly SIHeaderROF iHeader;

   117         #endregion

   118     }

   119 }