author | hgs |
Tue, 19 Oct 2010 11:00:12 +0800 | |
changeset 57 | f6055a57ae18 |
parent 0 | d0791faffa3f |
permissions | -rw-r--r-- |
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// Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// |
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/** |
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@file |
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@internalComponent |
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*/ |
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#include <f32file.h> |
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#include "obexsyncfilewriter.h" |
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#include "logger.h" |
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#ifdef __FLOG_ACTIVE |
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_LIT8(KLogComponent, "OBEX"); |
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#endif |
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// |
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// Panic category for CObexSyncFileWriter |
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// |
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_LIT(KObexSyncFileWriterPanic, "Obex-SFW"); |
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/** |
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Panic codes for CObexSyncFileWriter |
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@internalComponent |
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@released |
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*/ |
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enum TSyncObexFileWriterPanic |
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{ |
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/** Null buffer pointer */ |
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ENullBufferPointer |
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}; |
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// |
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// Implementation of CObexSyncFileWriter |
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// |
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/** |
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Factory function |
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Note that we return a pointer to the interface class, so |
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that this class can only be used through this interface. |
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This class in an implementation of a strategy as part of |
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a Strategy pattern. CObexAsyncFileWriter provides an |
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alternative strategy implementation, with CObexBufObject |
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as the context for these strategies. |
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@see MObexFileWriter |
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@see CObexAsyncFileWriter |
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@see CObexBufObject |
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@internalComponent |
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@released |
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@param aFile The file we're writing to |
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@return An MObexFileWriter for writing to file |
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*/ |
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MObexFileWriter* CObexSyncFileWriter::NewL(RFile& aFile) |
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{ |
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CObexSyncFileWriter* self = new(ELeave) CObexSyncFileWriter(aFile); |
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CleanupStack::PushL(self); |
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self->ConstructL(); |
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CleanupStack::Pop(self); |
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return self; |
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} |
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/** |
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Constructor |
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@internalComponent |
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@released |
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@param aFile The file to write to |
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*/ |
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CObexSyncFileWriter::CObexSyncFileWriter(RFile& aFile) |
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: iFile(aFile) |
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{ |
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} |
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/** |
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2nd phase constructor |
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@internalComponent |
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@released |
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*/ |
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void CObexSyncFileWriter::ConstructL() |
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{ |
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} |
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/** |
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Normal write to file |
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@internalComponent |
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@released |
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108 |
@param aPos The file position |
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109 |
@param aBuf The buffer we're to write. We use this buffer by copying the pointer |
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110 |
and return the buffer we previously wrote to the caller by updating |
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111 |
the pointer. If an error occurs, the buffers are not swapped and |
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112 |
the pointer is not updated. Note that this class never owns any |
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113 |
buffers and that passing a buffer to this function does not imply a |
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114 |
transfer of ownership. |
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115 |
@return Symbian OS error code |
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116 |
*/ |
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117 |
TInt CObexSyncFileWriter::Write(TInt aPos, CBufBase*& aBuf) |
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118 |
{ |
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__ASSERT_ALWAYS(aBuf, PANIC(KObexSyncFileWriterPanic, ENullBufferPointer)); |
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120 |
|
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121 |
// Write the next block |
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122 |
return iFile.Write(aPos, aBuf->Ptr(0)); |
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123 |
} |
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124 |
|
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125 |
/** |
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126 |
Final, synchronous write to file |
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127 |
|
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128 |
@internalComponent |
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@released |
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130 |
|
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131 |
@param aPos The file position |
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@param aBuf The buffer we're to write. We use this buffer by copying the pointer |
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133 |
and return the buffer we previously wrote to the caller by updating |
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134 |
the pointer. If an error occurs, the buffers are not swapped and |
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the pointer is not updated. Note that this class never owns any |
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136 |
buffers and that passing a buffer to this function does not imply a |
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137 |
transfer of ownership. |
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@param aLength The amount of the buffer to write |
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@return Symbian OS error code |
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*/ |
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141 |
TInt CObexSyncFileWriter::FinalWrite(TInt aPos, CBufBase*& aBuf, TInt aLength) |
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142 |
{ |
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__ASSERT_ALWAYS(aBuf, PANIC(KObexSyncFileWriterPanic, ENullBufferPointer)); |
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144 |
|
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// Write the final block |
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TInt err = iFile.Write(aPos, aBuf->Ptr(0), aLength); |
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if (err == KErrNone) |
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{ |
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//flush the buffer, commit the write |
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return iFile.Flush(); |
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} |
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else |
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153 |
{ |
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return err; |
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} |
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} |
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157 |
|
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/** |
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Destructor |
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|
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@internalComponent |
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@released |
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*/ |
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CObexSyncFileWriter::~CObexSyncFileWriter() |
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{ |
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} |