<?xml version="1.0" encoding="utf-8"?>

<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->

<!-- This component and the accompanying materials are made available under the terms of the License 

"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: 

-->

<!DOCTYPE task

  PUBLIC "-//OASIS//DTD DITA Task//EN" "task.dtd">

<task id="GUID-834F5FC8-EBE4-4076-B1E3-38DDFF89D700" xml:lang="en"><title>Modifying

the Data and Delimiter</title><shortdesc>This tutorial describes the steps to modify the data and delimiter.</shortdesc><prolog><metadata><keywords/></metadata></prolog><taskbody>

<prereq>       <p>HTTP Utilities Library provides <codeph>CDelimitedXxxx8</codeph> classes

to modify the data and the delimiter. </p>     </prereq>

<context>       <p>Use <codeph>CDelimitedXxxx8</codeph> classes to parse,

add or remove the delimiter and segment within the URI.<note> <codeph>TDelimitedXxxxParser8</codeph> classes

provide the functionality only for parsing.</note></p><p><xref href="GUID-51DFAA06-EC5E-32E6-9819-39938C46B2C0.dita"><apiname>CDelimitedPath8</apiname></xref>, <xref href="GUID-CF89AECB-5085-32CA-85B4-3573CDB1D595.dita"><apiname>CDelimitedPathSegment8</apiname></xref> and <xref href="GUID-9A640379-04BC-3A8E-9452-54833B2419AE.dita"><apiname>CDelimitedQuery8</apiname></xref> classes are derived from <xref href="GUID-347440D2-D58D-3505-88EB-5BA4B89F2FC2.dita"><apiname>CDelimitedDataBase</apiname></xref> to

add and remove data and delimiters from the respective component.   <codeph>CDelimitedXxxx8</codeph> classes

provide the following functionality:</p><ul>

<li><p><codeph>SetDelimiter()</codeph>, <codeph>Parse()</codeph> and <codeph>ParseReverse()</codeph> functions

are used to set the delimiter and parse the data. </p><p/></li>

<li><p><codeph>ParseReverse()</codeph> is used, for example, when you want

to extract the file name. For more details on parsing the delimited data,

refer to <xref href="GUID-42F0F282-58D6-4878-B53D-EAEEF86A3D7D.dita">Parsing the

delimited data</xref>.</p></li>

</ul><note> Delimiter must be set before the data is parsed. </note><p>The

following are some of the URI data and delimiter modifications that can be

performed on a URI: <codeblock xml:space="preserve">_LIT8(KPath,"c:/myfolder");

_LIT8(KLogs,"logs");

//Create CDelimitedPath8 object

CDelimitedPath8* dpath = CDelimitedPath8::NewL(KPath); </codeblock></p>  

  </context>

<steps-unordered>

<step id="GUID-3CDC248D-ABF4-46C6-9841-E79C7DE80C50"><cmd/>

<info><b>Removing a segment:</b> The following code removes the first segment

from the data. <p/></info>

<stepxmp><codeblock xml:space="preserve">dpath-&gt;PopFrontL();

// remove first segment containing "c:"

const TDesC8&amp; des = dpath-&gt;Parser().Des();</codeblock></stepxmp>

<stepresult><p>Here, <codeph>des</codeph> holds "<filepath>/myfolder/logs</filepath>"

after removing "<filepath>c:</filepath>". To remove the last segment from

the data, use <codeph>PopBackL()</codeph>. </p></stepresult>

</step>

<step id="GUID-4DAA1D56-D5FF-476C-A58A-2401605B8872"><cmd/>

<info><p><b>Adding a segment:</b> The following code adds a new segment at

the end of the data. </p></info>

<stepxmp><codeblock xml:space="preserve">dpath-&gt;PushBackL(KLogs);

// add "logs" at the end

const TDesC8&amp; des = dpath-&gt;Parser().Des();</codeblock></stepxmp>

<stepresult><p>Here, <codeph>des</codeph> holds "<filepath>c:/myfolder/logs</filepath>"

after adding "logs". To add a new segment at the beginning of the data, use <codeph>PushFrontL()</codeph>. </p></stepresult>

</step>

<step id="GUID-ACE640AB-3C04-417F-A8FC-9688ED80D81B"><cmd/>

<info><p><b>Removing a delimiter:</b> The following code removes the delimiter

from the beginning of the data. </p></info>

<stepxmp><codeblock xml:space="preserve">dpath-&gt;TrimFrontDelimiterL();

// remove delimiter "/" at the beginning

const TDesC8&amp; des = dpath-&gt;Parser().Des();</codeblock></stepxmp>

<stepresult><p>Here, <codeph>des</codeph> holds "<filepath>myfolder/logs</filepath>"

after removing "/". To add the delimiter at the beginning or at the end of

the data, use <codeph>AddFrontDelimiterL()</codeph> and <codeph>AddBackDelimiterL()</codeph> respectively. </p></stepresult>

</step>

<step id="GUID-65DA38D0-6CCE-4443-86F0-0B55F716FB19"><cmd/>

<info><p><b>Parsing data and removing the current segment of data:</b> The

following code parses the data and removes the current segment of data. </p></info>

<stepxmp><codeblock xml:space="preserve">//Parse before removing the segment

dpath->Parse();

//remove the current segment

dpath->RemoveCurrentL();

// parse the data after removing "myfolder"

const TDesC8&amp; des = dpath-&gt;Parser().Des();</codeblock></stepxmp>

<stepresult><p>Here, <codeph>des</codeph> holds "<filepath>/logs</filepath>"

after removing "<filepath>myfolder</filepath>". </p><note> The data must be

parsed after removing the segment. </note></stepresult>

</step>

<step id="GUID-B4A6C14F-D971-456D-9F9E-1AD6AEC9E2F5"><cmd/>

<info><p><b>Adding a delimiter:</b> The following code inserts a new segment

before the current parsed segment. </p></info>

<stepxmp><codeblock xml:space="preserve">// data to insert

_LIT8(KHolyfolder,"Holyfolder");

//insert a new segment before the current segment

dpath->InsertCurrentL(KHolyfolder);

// parse the data after inserting "Holyfolder"

const TDesC8&amp; des = dpath-&gt;Parser().Des();</codeblock></stepxmp>

<stepresult><p>Here, des holds "<filepath>/Holyfolder/logs</filepath>" after

inserting "<filepath>Holyfolder</filepath>". </p></stepresult>

</step>

</steps-unordered>

</taskbody><related-links>

<link href="GUID-795B41AF-FBEA-56CE-AE20-EF17BE754723.dita"><linktext>HTTP Utilities

Library Overview</linktext></link>

<link href="GUID-42F0F282-58D6-4878-B53D-EAEEF86A3D7D.dita"><linktext>Parsing Delimited

Data</linktext></link>

<link href="GUID-38B65AAC-3CFA-5C9B-AD6F-36823B6C2C0E.dita"><linktext>Escape and

insert concept</linktext></link>