76 lines
2.8 KiB
Plaintext
76 lines
2.8 KiB
Plaintext
/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the documentation of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:FDL$
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** GNU Free Documentation License
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** Alternatively, this file may be used under the terms of the GNU Free
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** Documentation License version 1.3 as published by the Free Software
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** Foundation and appearing in the file included in the packaging of
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** this file.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms
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** and conditions contained in a signed written agreement between you
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** and Nokia.
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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/*!
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\example xml/htmlinfo
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\title XML HTML Info Example
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The XML HTML Info example provides a simple command line utility that
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scans the current directory for HTML files and prints statistics about
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them to standard out.
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\note Standard out is redirected on some platforms. On Symbian using Open
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C \c stdout is by default directed to the console window, but this window
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may not always be visible. To redirect to a file instead, locate the \c
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c:\\system\\data\\config.ini file (on either the emulator or the device)
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and change \c STDOUT to point to \c MEDIA4. This will redirect the console
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to \c c:\\system\\data\\out.txt.
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The files are parsed using a QXmlStreamReader object. If the file does
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not contain a well-formed XML document, a description of the error is
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printed to the standard error console.
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\section1 Basic Operation
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The main function of the example uses QDir to access files in the current
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directory that match either "*.htm" or "*.html". For each file found,
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the \c parseHtmlFile() function is called.
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Reading XML is handled by an instance of the QXmlStreamReader class, which
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operates on the input file object:
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\snippet examples/xml/htmlinfo/main.cpp 0
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The work of parsing and the XML and extracting statistics is done in a
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while loop, and is driven by input from the reader:
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\snippet examples/xml/htmlinfo/main.cpp 1
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If more input is available, the next token from the input file is read
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and parsed. The program then looks for the specific element types,
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"title", "a", and "p", and stores information about them.
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When there is no more input, the loop terminates. If an error occurred,
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information is written to the standard out file via a stream, and the
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example exits:
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\snippet examples/xml/htmlinfo/main.cpp 2
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If no error occurred, the example prints some statistics from the data
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gathered in the loop, and then exits.
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*/
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