Symbian3/PDK/Source/GUID-EAEE54D0-4580-5BE7-AA16-4ABC216B4EB0.dita
author Graeme Price <GRAEME.PRICE@NOKIA.COM>
Fri, 15 Oct 2010 14:32:18 +0100
changeset 15 307f4279f433
parent 14 578be2adaf3e
permissions -rw-r--r--
Initial contribution of the Adaptation Documentation.
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<?xml version="1.0" encoding="utf-8"?>
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
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<!-- This component and the accompanying materials are made available under the terms of the License 
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"Eclipse Public License v1.0" which accompanies this distribution, 
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
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<!-- Initial Contributors:
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    Nokia Corporation - initial contribution.
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Contributors: 
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-->
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<!DOCTYPE concept
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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
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<concept id="GUID-EAEE54D0-4580-5BE7-AA16-4ABC216B4EB0" xml:lang="en"><title>How
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to list directories and files</title><shortdesc>This topic describe show to list directories and files together
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and separately.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
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<p>The list of a directory's contents can obtained by using two variants of
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the function <codeph>RFs::GetDir()</codeph>. Both variants provide a filtered
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list of files and directories; the second additionally provides a separate
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list containing directories only. Both variants use an attribute mask to filter
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the entry types. </p>
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<p>The following sections assume that some directories and a file have been
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created in a directory <filepath>FileserverExample</filepath>, and then lists
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them in alphabetical order.</p>
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<section id="GUID-75A55F3B-D29B-48D3-B4DB-D907FA8F29E7"><title>Listing directories and files together</title> <ol id="GUID-EF43DF74-3059-50A2-854A-59985457877B">
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<li id="GUID-5781228A-BDB8-5E80-AFFF-9B0CB1E574A9"><p>Declare a <codeph>CDir</codeph> pointer.
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This type holds an array of directory entries.</p> </li>
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<li id="GUID-184CBE11-E62C-542F-9F95-718960F72639"><p>Use <codeph>GetDir()</codeph> to
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get a single list, in the <codeph>CDir</codeph> object, which can contain
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both file and directory entries.</p> <p>Use <codeph>KEntryAttMaskSupported</codeph> to
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indicate all five file attributes, and the directory attribute.</p> <p>Use <codeph>ESortByName</codeph> to
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order the entries alphabetically.</p> </li>
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<li id="GUID-3AD0DD32-B772-5B9B-A3BF-32DAC34D00E3"><p><codeph>CDir::operator[]()</codeph> can
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be used to get the attributes, name, size and modification date and time of
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the <codeph>TEntry</codeph> at the specified index within the array. </p> </li>
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<li id="GUID-BCD0DB7B-8329-5C3F-B194-68D77FB1C9C5"><p>Delete the <codeph>CDir</codeph> object
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after use.</p> </li>
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</ol> <codeblock id="GUID-5C104BEF-855C-55F3-8648-3DB6285A3607" xml:space="preserve">
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_LIT(KDir,"\\FileserverExample\\*");
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CDir* dirList;
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User::LeaveIfError(fsSession.GetDir(KDir,
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        KEntryAttMaskSupported,ESortByName,dirList));
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_LIT(KString,"%S");
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for (TInt i=0;i&lt;dirList-&gt;Count();i++)
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    console-&gt;Printf(KString,&amp;(*dirList)[i].iName);
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delete dirList;</codeblock> <p><b>Notes</b> </p> <ul>
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<li id="GUID-6BACC898-1046-52BF-9338-445C4685DFA6"><p><codeph>GetDir()</codeph> supports
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the use of the two <keyword>wildcard</keyword> characters: <filepath>*</filepath> (meaning
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any sequence of characters within any part of a component), and <filepath>?</filepath> (meaning
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any single character).</p> </li>
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</ul> </section>
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<section id="GUID-C3AE6F4F-C1E4-4F37-B638-ABC952E6D5BD"><title>Listing directories and files separately</title> <p>If you
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want files and directories to be listed separately, another variant of <codeph>GetDir()</codeph> should
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be used. On return, the first list contains only files, the second directories.</p> <ol id="GUID-EE1E3D1B-109C-50B4-814F-1AA37105E8DE">
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<li id="GUID-ACE8E30C-3784-552F-B2F1-8A5C7ACE52CA"><p>Use <codeph>GetDir()</codeph> to
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provide a list of directories and files and additionally a separate list of
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directories only.</p> </li>
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<li id="GUID-5B68A082-7725-5F05-BCB0-2B8513803001"><p>If the attribute mask <codeph>KEntryAttNormal</codeph> is
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used, no system or hidden files or directories are included in the file list.</p> </li>
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</ol> <codeblock id="GUID-E8D48A34-62EA-588C-9B10-36B87CCF27D6" xml:space="preserve">CDir* fileList;
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User::LeaveIfError(fsSession.GetDir(KDir,
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        KEntryAttNormal,ESortByName,fileList,dirList));</codeblock> </section>
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</conbody></concept>