1 // Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: CFileSystemImage implementation |
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14 // |
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15 // |
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16 |
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17 #include "filesystemimage.h" |
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18 #include "debug.h" |
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19 |
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20 const TInt KImageFileMode = EFileShareReadersOnly | EFileRead; |
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21 |
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22 CFileSystemImage::CFileSystemImage() : |
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23 iIsOpened( EFalse ) |
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24 { |
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25 // No implementation required |
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26 } |
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27 |
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28 CFileSystemImage::~CFileSystemImage() |
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29 { |
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30 // iFile will be closed with the session if it's still open |
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31 iFs.Close(); |
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32 delete iFileName; |
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33 } |
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34 |
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35 CFileSystemImage* CFileSystemImage::NewL( const TDesC& aFileName ) |
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36 { |
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37 CFileSystemImage* self = new (ELeave) CFileSystemImage(); |
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38 CleanupStack::PushL( self ); |
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39 self->ConstructL( aFileName ); |
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40 CleanupStack::Pop( self ); |
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41 return self; |
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42 } |
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43 |
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44 void CFileSystemImage::ConstructL( const TDesC& aFileName ) |
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45 { |
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46 TRACE_FUNC |
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47 User::LeaveIfError( iFs.Connect() ); |
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48 iFileName = aFileName.AllocL(); |
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49 TRACE_INFO(( _L( "Image file is '%S'" ), iFileName )) |
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50 } |
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51 |
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52 TInt CFileSystemImage::Open() |
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53 { |
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54 TRACE_FUNC |
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55 if ( iIsOpened ) |
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56 { |
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57 TRACE_INFO(( _L( "Image already opened" ) )) |
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58 return KErrNone; |
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59 } |
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60 TInt err = iFile.Open( iFs, *iFileName, KImageFileMode ); |
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61 if ( err == KErrNone ) |
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62 { |
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63 iIsOpened = ETrue; |
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64 } |
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65 TRACE_INFO(( _L( "Image opened with error %d" ), err )) |
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66 return err; |
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67 } |
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68 |
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69 TInt CFileSystemImage::Close() |
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70 { |
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71 if ( iIsOpened ) |
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72 { |
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73 iFile.Close(); |
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74 iIsOpened = EFalse; |
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75 } |
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76 return KErrNone; |
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77 } |
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78 |
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79 TInt CFileSystemImage::Read( const TInt64& aPos, TInt aLength, TDes8& aBuf ) |
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80 { |
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81 return iFile.Read( aPos, aBuf, aLength ); |
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82 } |
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83 |
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84 TInt CFileSystemImage::Write( const TInt64& /*aPos*/, TDesC8& /*aBuf*/ ) |
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85 { |
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86 return KErrAccessDenied; |
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87 } |
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88 |
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89 TInt64 CFileSystemImage::Size() |
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90 { |
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91 TInt size; |
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92 iFile.Size( size ); |
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93 return size; |
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94 } |
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