1 // Copyright (c) 2001-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

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

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // @file

    15 // This file contains the definition of the CMDXMLParserFileDataSource class

    16 // which is responsible for feeding the data source interface from a given XML file.

    17 // The headers for this class exist in the XMLParser.h header file so that the old

    18 // file-based interface can be implemented using the data source API without removing

    19 // source compatibility for older code.

    20 // 

    21 //

    22 

    23 

    24 #include <f32file.h>

    25 #include <gmxmlparser.h>

    26 #include "GMXMLFileDataSource.h"

    27 

    28 CMDXMLParserFileDataSource *CMDXMLParserFileDataSource::NewLC(RFs aRFs, const TDesC& aFileToParse)

    29 	{

    30 	CMDXMLParserFileDataSource* self = new (ELeave) CMDXMLParserFileDataSource();

    31 	CleanupStack::PushL(self);

    32 	self->ConstructL(aRFs, aFileToParse);

    33 	return self;

    34 	}

    35 

    36 CMDXMLParserFileDataSource *CMDXMLParserFileDataSource::NewL(RFs aRFs, const TDesC& aFileToParse)

    37 	{

    38 	CMDXMLParserFileDataSource *self = NewLC(aRFs, aFileToParse);

    39 	CleanupStack::Pop();

    40 	return self;

    41 	}

    42 	

    43 CMDXMLParserFileDataSource* CMDXMLParserFileDataSource::NewL(RFile& aFileHandleToParse)

    44 	{

    45 	CMDXMLParserFileDataSource* me = new(ELeave) CMDXMLParserFileDataSource();

    46 	CleanupStack::PushL(me);

    47 	me->ConstructL(aFileHandleToParse);

    48 	CleanupStack::Pop(me);

    49 	return me;

    50 	}

    51 

    52 void CMDXMLParserFileDataSource::ConstructL(RFile& aFileHandleToParse)

    53 	{ 

    54 	// take ownership of file handle

    55 	iXMLFile = aFileHandleToParse;

    56 	

    57 	// Calculate size of file

    58 	TInt fileSize;

    59 	User::LeaveIfError(iXMLFile.Size(fileSize));

    60 

    61 	// make buffer

    62 	iXMLFileBuffer = HBufC8::NewL(fileSize);

    63 	TPtr8 tmpbuffer(iXMLFileBuffer->Des());

    64 

    65 	// read file into buffer

    66 	User::LeaveIfError(iXMLFile.Read(tmpbuffer, fileSize));

    67 	iState = KInit;

    68 

    69 	iXMLFile.Close();

    70 	}	

    71 

    72 

    73 CMDXMLParserFileDataSource::~CMDXMLParserFileDataSource()

    74 	{

    75 	iXMLFile.Close();

    76 	delete iXMLFileBuffer;

    77 	}

    78 

    79 CMDXMLParserFileDataSource::CMDXMLParserFileDataSource() : iState(KError), iXMLFileBuffer(0)

    80 	{

    81 	}

    82 

    83 void CMDXMLParserFileDataSource::ConstructL(RFs aRFs, const TDesC& aFileToParse)

    84 	{ 

    85 	User::LeaveIfError(iXMLFile.Open(aRFs, aFileToParse, EFileRead | EFileShareReadersOnly));

    86 	

    87 	// Calculate size of file

    88 	TInt fileSize;

    89 	User::LeaveIfError(iXMLFile.Size(fileSize));

    90 

    91 	// make buffer

    92 	iXMLFileBuffer = HBufC8::NewLC(fileSize);

    93 	TPtr8 tmpbuffer(iXMLFileBuffer->Des());

    94 

    95 	// read file into buffer

    96 	User::LeaveIfError(iXMLFile.Read(tmpbuffer, fileSize));

    97 	iState = KInit;

    98 

    99 	iXMLFile.Close();

   100 

   101 	CleanupStack::Pop();	// memory buffer

   102 	}

   103 

   104 void CMDXMLParserFileDataSource::GetData(TPtrC8 &aPtr, TRequestStatus &aStatus)

   105 	{

   106 	TRequestStatus *s = &aStatus;

   107 	switch(iState)

   108 		{

   109 	case KInit:

   110 		aPtr.Set(iXMLFileBuffer->Des());

   111 		iState = KDataSent;

   112 		User::RequestComplete(s, KMoreData);

   113 		break;

   114 

   115 	case KDataSent:

   116 		delete iXMLFileBuffer;

   117 		iXMLFileBuffer = 0;

   118 		iState = KDone;

   119 		User::RequestComplete(s, KDataStreamEnd);

   120 		break;

   121 

   122 	case KDone:

   123 		User::RequestComplete(s, KDataStreamEnd);

   124 		break;

   125 

   126 	default:

   127 		User::RequestComplete(s, KDataStreamError);

   128 		break;

   129 		};

   130 	}

   131 

   132 void CMDXMLParserFileDataSource::Disconnect()

   133 	{

   134 	delete iXMLFileBuffer;

   135 	iXMLFileBuffer = 0;

   136 	iState = KDone;

   137 	}

   138 

   139 // End of File