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

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

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

     4 "Eclipse Public License v1.0" which accompanies this distribution, 

     5 and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->

     6 <!-- Initial Contributors:

     7     Nokia Corporation - initial contribution.

     8 Contributors: 

     9 -->

    10 <!DOCTYPE concept

    11   PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">

    12 <concept id="GUID-5012D63B-4353-5616-BBFB-DB04DAF71679" xml:lang="en"><title>XmlExample:

    13 Using the XML framework to parse an XML file</title><prolog><metadata><keywords/></metadata></prolog><conbody>

    14 <section id="GUID-7860D226-83AD-501E-9431-6A61A9AC2996"><title>Download</title> <p>Click

    15 on the following link to download the example: <xref href="guid-6013a680-57f9-415b-8851-c4fa63356636/zips/guid-3eef58b5-bcd4-4f1e-a864-71273651c3bb.zip" scope="external">XmlExample.zip</xref></p><p>Click:<xref href="guid-6013a680-57f9-415b-8851-c4fa63356636/guid-3eef58b5-bcd4-4f1e-a864-71273651c3bb.html" scope="peer">browse</xref> to view the example code. </p> </section>

    16 <section><title>Introduction</title> <p>This example application demonstrates

    17 the usage of the <xref href="GUID-5748D958-9480-3358-A399-6B92293B86D9.dita"><apiname>XML</apiname></xref> framework API to parse XML and WBXML

    18 files. </p> <p>The overview contains the following sections: </p> <ul>

    19 <li id="GUID-01C9B600-A55E-55D8-AA35-057464345A45"><p> <xref href="GUID-5012D63B-4353-5616-BBFB-DB04DAF71679.dita#GUID-5012D63B-4353-5616-BBFB-DB04DAF71679/GUID-3A5027A1-BEE9-5EB4-8670-7E729CF9260F">Description</xref>  </p> </li>

    20 <li id="GUID-656E68A4-BAF3-505B-AC9A-96C6A9107E1B"><p> <xref href="GUID-5012D63B-4353-5616-BBFB-DB04DAF71679.dita#GUID-5012D63B-4353-5616-BBFB-DB04DAF71679/GUID-5dfd0234-44cf-4252-a980-5b73aaa61e35">Class summary</xref>  </p> </li>

    21 <li id="GUID-F8CEA6F8-D4AB-5E32-9EC1-9FACED6F34B5"><p> <xref href="GUID-5012D63B-4353-5616-BBFB-DB04DAF71679.dita#GUID-5012D63B-4353-5616-BBFB-DB04DAF71679/GUID-E9F975CA-A59F-5484-83FD-7F17F0A03807">Build</xref>  </p> </li>

    22 </ul> </section>

    23 <section id="GUID-3A5027A1-BEE9-5EB4-8670-7E729CF9260F"><title>Description</title> <p>The

    24 example application demonstrates, how to use the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita"><apiname>Xml</apiname></xref> framework

    25 to parse XML and WBXML files. It takes a valid XML file with a DTD (Document

    26 Type Declaration) definining its structure, and a WBXML (WAP Binary XML format)

    27 file as input. You can generate a WBXML file from an XML file using any freeware

    28 converters. The application's <filepath>bld.inf</filepath> file specifies

    29 the target path to which all the three files (XML, DTD, WBXML) need to be

    30 exported. </p> <p>The application implements all the pure virtual functions

    31 of the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-25E466A4-0578-3BED-A56D-4E0906313788"><apiname>Xml::MContentHandler</apiname></xref> class, which is a client interface

    32 to the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita"><apiname>Xml</apiname></xref> framework. These functions inform the client

    33 application about the XML element being parsed, its content, parser errors

    34 if any and so on. </p> <p>The XML and WBXML files are parsed using an object

    35 of the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-EE37CB28-DAB4-30A9-B46E-8AE4664B28DE"><apiname>Xml::CParser</apiname></xref> class. The parser object is configured

    36 to report namespace mappings to the client application, using the function <xref href="GUID-EE37CB28-DAB4-30A9-B46E-8AE4664B28DE.dita#GUID-EE37CB28-DAB4-30A9-B46E-8AE4664B28DE/GUID-5F2688CC-16B3-3F0D-B6CA-CE59FE7939BD"><apiname>Xml::CParser::EnableFeature()</apiname></xref>. </p> <p>The

    37 application first opens a file session using <xref href="GUID-E263C747-946F-35AA-9F1D-41833BD350FC.dita"><apiname>RFs</apiname></xref> to read

    38 the XML and WBXML files. Then, the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-CC810749-2F0D-3CC0-911D-EE12BB934867"><apiname>Xml::ParseL()</apiname></xref> function

    39 is called to start parsing the files. The application parses the XML file

    40 followed by the WBXML file. While these files are being parsed, status messages

    41 are printed to the console by the callback functions as and when they are

    42 invoked. </p> <p>For demonstration purposes, the XML file is parsed twice,

    43 once by the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-EE37CB28-DAB4-30A9-B46E-8AE4664B28DE"><apiname>Xml::CParser</apiname></xref> object created using the MIME

    44 type and again by the <codeph>CParser</codeph> object created using match

    45 data criteria. The match data criteria are specified using an object of the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-AEFF2DB4-FBC2-36EE-A4CE-7EBBD4AF004E"><apiname>Xml::CMatchData</apiname></xref> class,

    46 which is passed to the <xref href="GUID-EE37CB28-DAB4-30A9-B46E-8AE4664B28DE.dita#GUID-EE37CB28-DAB4-30A9-B46E-8AE4664B28DE/GUID-9E9D8DBA-A396-3F62-8B59-C4556FD5A80E"><apiname>Xml::CParser::NewLC()</apiname></xref> function while

    47 creating the parser object. This will return a <codeph>CParser</codeph> object

    48 that matches the specified MIME type, variant and so on. </p> </section>

    49 <section id="GUID-5DFD0234-44CF-4252-A980-5B73AAA61E35"><title>Class summary</title><p> <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-25E466A4-0578-3BED-A56D-4E0906313788"><apiname>Xml::MContentHandler </apiname></xref><xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-88087934-B84B-39DD-907F-71328D684035"><apiname>Xml::RDocumentParameters </apiname></xref><xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-A8A238B9-48A5-3729-9BAE-0287EE6295FA"><apiname>Xml::RAttributeArray </apiname></xref><xref href="GUID-DEFFFAAD-662A-34E9-8955-759F37BDC9AB.dita#GUID-DEFFFAAD-662A-34E9-8955-759F37BDC9AB/GUID-9A8E865C-FDAC-3923-83A9-5A8680AEE1EE"><apiname>Xml::CParserXml::CMatchData </apiname></xref> </p></section>

    50 <section id="GUID-E9F975CA-A59F-5484-83FD-7F17F0A03807"><title>Build</title> <p>The <xref href="GUID-3100800B-B2F7-50EF-BD4C-3C345ECCB2A5.dita">Symbian platform build process</xref> describes

    51 how to build an application. </p> <p>The <codeph>XmlExample</codeph> builds

    52 an executable called <filepath>xmlexample.exe</filepath> in the standard location

    53 (<filepath>\epoc32\release\winscw\&lt;build_variant&gt;</filepath> for CodeWarrior).

    54 After launching the executable, depending on the emulator you are using, you

    55 may need to task away from the application launcher/shell screen to view the

    56 console. </p> </section>

    57 </conbody></concept>