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Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_example_resolver_8cpp_source.html
author Dominic Pinkman <dominic.pinkman@nokia.com>
Fri, 13 Aug 2010 16:47:46 +0100
changeset 14 578be2adaf3e
parent 6 43e37759235e
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Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
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<title>TB9.2 Example Applications: examples/SysLibs/ECom/InterfaceDefinition/ExampleResolver.cpp Source File</title>
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<link href="tabs.css" rel="stylesheet" type="text/css"/>
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<link href="doxygen.css" rel="stylesheet" type="text/css"/>
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</head>
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<body>
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<!-- Generated by Doxygen 1.6.2 -->
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<h1>examples/SysLibs/ECom/InterfaceDefinition/ExampleResolver.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).</span>
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<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
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<a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span>
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<a name="l00004"></a>00004 <span class="comment">// under the terms of &quot;Eclipse Public License v1.0&quot;</span>
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<a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span>
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<a name="l00006"></a>00006 <span class="comment">// at the URL &quot;http://www.eclipse.org/legal/epl-v10.html&quot;.</span>
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<a name="l00007"></a>00007 <span class="comment">//</span>
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<a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span>
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<a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span>
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<a name="l00010"></a>00010 <span class="comment">//</span>
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<a name="l00011"></a>00011 <span class="comment">// Contributors:</span>
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<a name="l00012"></a>00012 <span class="comment">//</span>
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<a name="l00013"></a>00013 <span class="comment">// Description:</span>
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<a name="l00014"></a>00014 <span class="comment">//</span>
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<a name="l00015"></a>00015
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<a name="l00016"></a>00016
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<a name="l00017"></a>00017 <span class="preprocessor">#include &lt;ecom.h&gt;</span>
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<a name="l00018"></a>00018 <span class="preprocessor">#include &lt;ecomerrorcodes.h&gt;</span>
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<a name="l00019"></a>00019 <span class="preprocessor">#include &lt;ecomresolverparams.h&gt;</span>
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<a name="l00020"></a>00020 <span class="preprocessor">#include &lt;implementationinformation.h&gt;</span>
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<a name="l00021"></a>00021 <span class="preprocessor">#include &lt;publicregistry.h&gt;</span>
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<a name="l00022"></a>00022
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<a name="l00023"></a>00023 <span class="preprocessor">#include &quot;ExampleResolver.h&quot;</span>
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<a name="l00024"></a>00024
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<a name="l00025"></a>00025 <a class="code" href="class_c_example_resolver.html">CExampleResolver</a>* CExampleResolver::NewL(MPublicRegistry&amp; aRegistry)
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<a name="l00026"></a>00026         {
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<a name="l00027"></a>00027         <span class="keywordflow">return</span> <span class="keyword">new</span>(ELeave) <a class="code" href="class_c_example_resolver.html">CExampleResolver</a>(aRegistry);
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<a name="l00028"></a>00028         }
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<a name="l00029"></a>00029
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<a name="l00030"></a>00030 CExampleResolver::~CExampleResolver()
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<a name="l00031"></a>00031         {
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<a name="l00032"></a>00032         <span class="keywordflow">if</span>(iImplementationInfoArray)
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<a name="l00033"></a>00033                 {
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<a name="l00034"></a>00034                 iImplementationInfoArray-&gt;Reset();
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<a name="l00035"></a>00035                 <span class="keyword">delete</span> iImplementationInfoArray;
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<a name="l00036"></a>00036                 }
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<a name="l00037"></a>00037         }
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<a name="l00038"></a>00038
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<a name="l00039"></a>00039 CExampleResolver::CExampleResolver(MPublicRegistry&amp; aRegistry)
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<a name="l00040"></a>00040 : CResolver(aRegistry)
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<a name="l00041"></a>00041         {
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<a name="l00042"></a>00042         <span class="comment">// Do nothing here</span>
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<a name="l00043"></a>00043         }
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<a name="l00044"></a>00044
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<a name="l00045"></a><a class="code" href="class_c_example_resolver.html#a69f86a4e738658a27f4140d047ab1c6d">00045</a> TUid <a class="code" href="class_c_example_resolver.html#a69f86a4e738658a27f4140d047ab1c6d">CExampleResolver::IdentifyImplementationL</a>(TUid aInterfaceUid,
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<a name="l00046"></a>00046         <span class="keyword">const</span> TEComResolverParams&amp; aAdditionalParameters)<span class="keyword"> const</span>
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<a name="l00047"></a>00047 <span class="keyword">        </span>{
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<a name="l00048"></a>00048         RImplInfoArray&amp; implementationsInfo = iRegistry.ListImplementationsL(aInterfaceUid);
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<a name="l00049"></a>00049         TUid found = KNullUid;
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<a name="l00050"></a>00050         <span class="keywordflow">if</span>(implementationsInfo.Count())
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<a name="l00051"></a>00051                 {
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<a name="l00052"></a>00052                 found = Resolve(implementationsInfo, aAdditionalParameters);
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<a name="l00053"></a>00053                 }
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<a name="l00054"></a>00054         <span class="keywordflow">return</span> found;
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<a name="l00055"></a>00055         }
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<a name="l00056"></a>00056
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<a name="l00057"></a>00057 TUid CExampleResolver::Resolve(<span class="keyword">const</span> RImplInfoArray&amp; aImplementationsInfo,
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<a name="l00058"></a>00058         <span class="keyword">const</span> TEComResolverParams&amp; aAdditionalParameters)<span class="keyword"> const</span>
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<a name="l00059"></a>00059 <span class="keyword">        </span>{
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<a name="l00060"></a>00060         <span class="comment">// Loop through the implementations matching on type</span>
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<a name="l00061"></a>00061         <span class="keyword">const</span> TInt count = aImplementationsInfo.Count();
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<a name="l00062"></a>00062         <span class="keywordflow">for</span>(TInt index = 0; index &lt; count; ++index)
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<a name="l00063"></a>00063                 {
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<a name="l00064"></a>00064                 <span class="keyword">const</span> CImplementationInformation&amp; impData = *aImplementationsInfo[index];
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<a name="l00065"></a>00065                 <span class="comment">// As soon as we get a match on the datatype then return uid of the </span>
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<a name="l00066"></a>00066                 <span class="comment">// implementation found.</span>
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<a name="l00067"></a>00067                 <span class="keywordflow">if</span> (Match(impData.DataType(),                                           <span class="comment">// The Datatype of this implementation</span>
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<a name="l00068"></a>00068                                   aAdditionalParameters.DataType(),                     <span class="comment">// The type we are trying to find</span>
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<a name="l00069"></a>00069                                   aAdditionalParameters.IsWildcardMatch()))     <span class="comment">// If wildcards should be used</span>
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<a name="l00070"></a>00070                         <span class="keywordflow">return</span> impData.ImplementationUid();
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<a name="l00071"></a>00071                 }
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<a name="l00072"></a>00072
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<a name="l00073"></a>00073         <span class="keywordflow">return</span> KNullUid;
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<a name="l00074"></a>00074         }
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<a name="l00075"></a>00075
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<a name="l00076"></a><a class="code" href="class_c_example_resolver.html#ade80c48bb5089b04715bf3d4e192331f">00076</a> RImplInfoArray* <a class="code" href="class_c_example_resolver.html#ade80c48bb5089b04715bf3d4e192331f">CExampleResolver::ListAllL</a>(TUid aInterfaceUid,
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<a name="l00077"></a>00077         <span class="keyword">const</span> TEComResolverParams&amp; aAdditionalParameters)<span class="keyword"> const</span>
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<a name="l00078"></a>00078 <span class="keyword">        </span>{
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<a name="l00079"></a>00079         <span class="comment">// Use the member var to create the array so that we get proper cleanup behaviour</span>
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<a name="l00080"></a>00080         iImplementationInfoArray = <span class="keyword">new</span>(ELeave) RImplInfoArray;
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<a name="l00081"></a>00081         RImplInfoArray* retList = iImplementationInfoArray;
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<a name="l00082"></a>00082
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<a name="l00083"></a>00083         RImplInfoArray&amp; fullList = iRegistry.ListImplementationsL(aInterfaceUid);
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<a name="l00084"></a>00084
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<a name="l00085"></a>00085         <span class="keyword">const</span> TBool useWildcards = aAdditionalParameters.IsWildcardMatch();
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<a name="l00086"></a>00086         <span class="keyword">const</span> TDesC8&amp; matchType = aAdditionalParameters.DataType();
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<a name="l00087"></a>00087         <span class="keyword">const</span> TInt numImps = fullList.Count();
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<a name="l00088"></a>00088         <span class="keywordflow">for</span>(TInt index = 0; index &lt; numImps; ++index)
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<a name="l00089"></a>00089                 {
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<a name="l00090"></a>00090                 <span class="keywordflow">if</span>(Match(fullList[index]-&gt;DataType(), matchType, useWildcards))
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<a name="l00091"></a>00091                         {
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<a name="l00092"></a>00092                         User::LeaveIfError(retList-&gt;Append(fullList[index]));
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<a name="l00093"></a>00093                         }
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<a name="l00094"></a>00094                 }
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<a name="l00095"></a>00095
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<a name="l00096"></a>00096         <span class="comment">// Reset the member variable because we are passing ownership back</span>
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<a name="l00097"></a>00097         iImplementationInfoArray = NULL;
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<a name="l00098"></a>00098         <span class="keywordflow">return</span> retList;
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<a name="l00099"></a>00099         }
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<a name="l00100"></a>00100
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<a name="l00101"></a>00101 TBool CExampleResolver::Match(<span class="keyword">const</span> TDesC8&amp; aImplementationType,
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<a name="l00102"></a>00102         <span class="keyword">const</span> TDesC8&amp; aMatchType,
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<a name="l00103"></a>00103         TBool aUseWildcards)<span class="keyword"> const</span>
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<a name="l00104"></a>00104 <span class="keyword">        </span>{
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<a name="l00105"></a>00105         TInt matchPos = KErrNotFound;
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<a name="l00106"></a>00106
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<a name="l00107"></a>00107         _LIT8(dataSeparator, <span class="stringliteral">&quot;||&quot;</span>);
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<a name="l00108"></a>00108         <span class="keyword">const</span> TInt separatorLength = dataSeparator().Length();
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<a name="l00109"></a>00109
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<a name="l00110"></a>00110         <span class="comment">// Look for the section separator marker &#39;||&#39;</span>
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<a name="l00111"></a>00111         TInt separatorPos = aImplementationType.Find(dataSeparator);
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<a name="l00112"></a>00112         <span class="keywordflow">if</span>(separatorPos == KErrNotFound)
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<a name="l00113"></a>00113                 {
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<a name="l00114"></a>00114                 <span class="comment">// Match against the whole string</span>
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<a name="l00115"></a>00115                 <span class="keywordflow">if</span>(aUseWildcards)
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<a name="l00116"></a>00116                         matchPos = aImplementationType.Match(aMatchType);
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<a name="l00117"></a>00117                 <span class="keywordflow">else</span>
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<a name="l00118"></a>00118                         matchPos = aImplementationType.Compare(aMatchType);
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<a name="l00119"></a>00119                 }
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<a name="l00120"></a>00120         <span class="keywordflow">else</span>
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<a name="l00121"></a>00121                 {
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<a name="l00122"></a>00122                 <span class="comment">// Find the first section, up to the separator</span>
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<a name="l00123"></a>00123                 TPtrC8 dataSection = aImplementationType.Left(separatorPos);
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<a name="l00124"></a>00124                 TPtrC8 remainingData = aImplementationType.Mid(separatorPos + separatorLength);
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<a name="l00125"></a>00125                 <span class="comment">// Match against each section in turn</span>
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<a name="l00126"></a>00126                 <span class="keywordflow">while</span>(separatorPos != KErrNotFound)
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<a name="l00127"></a>00127                         {
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<a name="l00128"></a>00128                         <span class="comment">// Search this section</span>
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<a name="l00129"></a>00129                         <span class="keywordflow">if</span>(aUseWildcards)
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<a name="l00130"></a>00130                                 matchPos = dataSection.Match(aMatchType);
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<a name="l00131"></a>00131                         <span class="keywordflow">else</span>
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<a name="l00132"></a>00132                                 matchPos = dataSection.Compare(aMatchType);
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<a name="l00133"></a>00133
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<a name="l00134"></a>00134                         <span class="comment">// If we found it then no need to continue, so return</span>
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<a name="l00135"></a>00135                         <span class="keywordflow">if</span>(matchPos != KErrNotFound)
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<a name="l00136"></a>00136                                 <span class="keywordflow">return</span> ETrue;
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<a name="l00137"></a>00137
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<a name="l00138"></a>00138                         <span class="comment">// Move on to the next section</span>
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<a name="l00139"></a>00139                         separatorPos = remainingData.Find(dataSeparator);
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<a name="l00140"></a>00140                         <span class="keywordflow">if</span>(separatorPos != KErrNotFound)
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<a name="l00141"></a>00141                                 {
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<a name="l00142"></a>00142                                 dataSection.Set(remainingData.Left(separatorPos));
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<a name="l00143"></a>00143                                 remainingData.Set(remainingData.Mid(separatorPos + separatorLength));
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<a name="l00144"></a>00144                                 }
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<a name="l00145"></a>00145                         <span class="keywordflow">else</span>
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<a name="l00146"></a>00146                                 dataSection.Set(remainingData);
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<a name="l00147"></a>00147                         }
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<a name="l00148"></a>00148
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<a name="l00149"></a>00149                 <span class="comment">// Check the final part</span>
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<a name="l00150"></a>00150                 <span class="keywordflow">if</span>(aUseWildcards)
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<a name="l00151"></a>00151                         matchPos = dataSection.Match(aMatchType);
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<a name="l00152"></a>00152                 <span class="keywordflow">else</span>
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<a name="l00153"></a>00153                         matchPos = dataSection.Compare(aMatchType);
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<a name="l00154"></a>00154
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<a name="l00155"></a>00155                 }
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<a name="l00156"></a>00156         <span class="keywordflow">return</span> matchPos != KErrNotFound;
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<a name="l00157"></a>00157         }
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</pre></div></div>
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<hr size="1"/><address style="text-align: right;"><small>Generated by&nbsp;
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<a href="http://www.doxygen.org/index.html">
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<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address>
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</body>
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</html>
MCL/sftools/depl/docscontent