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Diffstat (limited to 'doc/src/snippets/xml/simpleparse/handler.cpp')
-rw-r--r-- | doc/src/snippets/xml/simpleparse/handler.cpp | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/doc/src/snippets/xml/simpleparse/handler.cpp b/doc/src/snippets/xml/simpleparse/handler.cpp new file mode 100644 index 0000000..440f6be --- /dev/null +++ b/doc/src/snippets/xml/simpleparse/handler.cpp @@ -0,0 +1,139 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the documentation of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +/* +handler.cpp + +Provides a handler for processing XML elements found by the reader. + +The handler stores the names of elements it finds and their indentation +levels. The indentation level is initially set to zero. +When a starting element is found, the indentation level is increased; +when an ending element is found, the indentation level is decreased. +*/ + +#include <QDebug> +#include "handler.h" + +/*! + Reset the state of the handler to ensure that new documents are + read correctly. + + We return true to indicate that parsing should continue. +*/ + +bool Handler::startDocument() +{ + elementName.clear(); + elementIndentation.clear(); + indentationLevel = 0; + + return true; +} + +/*! + Process each starting element in the XML document. + + Append the element name to the list of elements found; add its + corresponding indentation level to the list of indentation levels. + + Increase the level of indentation by one column. + + We return true to indicate that parsing should continue. +*/ + +bool Handler::startElement(const QString &, const QString &, + const QString & qName, const QXmlAttributes &) +{ + elementName.append(qName); + elementIndentation.append(indentationLevel); + indentationLevel += 1; + + return true; +} + +/*! + Process each ending element in the XML document. + + Decrease the level of indentation by one column. + + We return true to indicate that parsing should continue. +*/ + +bool Handler::endElement(const QString &, const QString &, + const QString &) +{ + indentationLevel -= 1; + + return true; +} + +/*! + Report a fatal parsing error, and return false to indicate to the reader + that parsing should stop. +*/ + +bool Handler::fatalError (const QXmlParseException & exception) +{ + qWarning() << QString("Fatal error on line %1, column %2: %3").arg( + exception.lineNumber()).arg(exception.columnNumber()).arg( + exception.message()); + + return false; +} + +/*! + Return the list of element names found. +*/ + +QStringList& Handler::names () +{ + return elementName; +} + +/*! + Return the list of indentations used for each element found. +*/ + +QList<int>& Handler::indentations () +{ + return elementIndentation; +} |