crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianImageLib/ROFS/Structures/TRofsDir.cs
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianImageLib/ROFS/Structures/TRofsDir.cs Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,181 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.IO;
+using SymbianUtils.Tracer;
+using SymbianUtils.Streams;
+using SymbianStructuresLib.Uids;
+using SymbianStructuresLib.Version;
+
+namespace SymbianImageLib.ROFS.Structures
+{
+ internal class TRofsDir : IEnumerable<TRofsEntry>
+ {
+ #region Constructors
+ public TRofsDir( string aName, uint aFileAddress, SymbianStreamReaderLE aReader, ITracer aTracer )
+ {
+ //aTracer.Trace( "[Dir ] @ 0x{0:x8} {1}", aFileAddress, aName );
+ //
+ iName = aName;
+ //
+ aReader.Seek( aFileAddress, SeekOrigin.Begin );
+ //
+ iStructSize = aReader.ReadUInt16();
+ iPadding = aReader.ReadUInt8();
+ iFirstEntryOffset = aReader.ReadUInt8();
+ iFileBlockAddress = aReader.ReadUInt32();
+ iFileBlockSize = aReader.ReadUInt32();
+ //
+ if ( iFileBlockAddress != 0 )
+ {
+ // Directory has files in it
+ AddFiles( aReader, aTracer, iFileBlockAddress, iFileBlockSize );
+ }
+ if ( iStructSize > KMinimumDirectoryEntrySize )
+ {
+ // Directory has subdirectories
+ AddSubDirs( aReader, aTracer, aFileAddress + iStructSize );
+ }
+ }
+ #endregion
+
+ #region API
+ #endregion
+
+ #region Constants
+ // The minimum standard entry size, irrespective of whether the directory
+ // contains subdirs or files.
+ public const uint KMinimumDirectoryEntrySize = 2 + 1 + 1 + 4 + 4;
+ #endregion
+
+ #region Properties
+ public uint Size
+ {
+ get { return iStructSize; }
+ }
+
+ public string Name
+ {
+ get { return iName; }
+ }
+
+ public uint FirstEntryOffset
+ {
+ get { return iFirstEntryOffset; }
+ }
+
+ public uint FileBlockAddress
+ {
+ get { return iFileBlockAddress; }
+ }
+
+ public uint FileBlockSize
+ {
+ get { return iFileBlockSize; }
+ }
+
+ public TRofsDir[] SubDirectories
+ {
+ get
+ {
+ return iSubdirectories.ToArray();
+ }
+ }
+ #endregion
+
+ #region Internal methods
+ private void AddFiles( SymbianStreamReaderLE aReader, ITracer aTracer, long aStartPosition, uint aSize )
+ {
+ long originalPosition = aReader.Position;
+ long endPos = aStartPosition + aSize;
+ //
+ long filePosition = aStartPosition;
+ while ( filePosition < endPos )
+ {
+ // Seek to start of file and read it
+ aReader.Seek( filePosition, SeekOrigin.Begin );
+ TRofsEntry entry = new TRofsEntry( aReader, aTracer );
+ iFiles.Add( entry );
+ //aTracer.Trace( "[File] @ 0x{0:x8} {1:d8} {2}", filePosition, entry.FileSize, entry.Name );
+
+ // Move to next file
+ filePosition += entry.Size;
+ }
+
+ // Restore original position
+ aReader.Seek( originalPosition, SeekOrigin.Begin );
+ }
+
+ private void AddSubDirs( SymbianStreamReaderLE aReader, ITracer aTracer, long aEndDirPos )
+ {
+ long originalPosition = aReader.Position;
+ //
+ long filePosition = aReader.BaseStream.Position;
+ while ( filePosition < aEndDirPos )
+ {
+ // Seek to start of subdir and read basic properties
+ aReader.Seek( filePosition, SeekOrigin.Begin );
+ TRofsEntry entry = new TRofsEntry( aReader, aTracer );
+
+ // Create a new subdirectory that we'll process recursively.
+ TRofsDir subdir = new TRofsDir( entry.Name, entry.FileAddress, aReader, aTracer );
+ iSubdirectories.Add( subdir );
+
+ // Move to next subdir, rounding to 4 bytes
+ long nextSubDirOffset = entry.Size;
+ nextSubDirOffset += ( ( 4 - nextSubDirOffset ) & 0x3 );
+ filePosition += nextSubDirOffset;
+ }
+
+ // Restore original position
+ aReader.Seek( originalPosition, SeekOrigin.Begin );
+ }
+ #endregion
+
+ #region From IEnumerable<TRofsEntry>
+ public IEnumerator<TRofsEntry> GetEnumerator()
+ {
+ foreach ( TRofsEntry entry in iFiles )
+ {
+ yield return entry;
+ }
+ }
+
+ System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
+ {
+ foreach ( TRofsEntry entry in iFiles )
+ {
+ yield return entry;
+ }
+ }
+ #endregion
+
+ #region Data members
+ private readonly string iName;
+ private ushort iStructSize; // Total size of this directory block including padding
+ private byte iPadding;
+ private byte iFirstEntryOffset; // offset to first entry
+ private uint iFileBlockAddress; // address of associated file block
+ private uint iFileBlockSize; // size of associated file block
+
+ private List<TRofsEntry> iFiles = new List<TRofsEntry>();
+ private List<TRofsDir> iSubdirectories = new List<TRofsDir>();
+ #endregion
+ }
+}