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Diffstat (limited to 'doc/src/snippets/xml/rsslisting/handler.cpp')
| -rw-r--r-- | doc/src/snippets/xml/rsslisting/handler.cpp | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/doc/src/snippets/xml/rsslisting/handler.cpp b/doc/src/snippets/xml/rsslisting/handler.cpp deleted file mode 100644 index 5cd2c45023..0000000000 --- a/doc/src/snippets/xml/rsslisting/handler.cpp +++ /dev/null @@ -1,182 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** You may use this file under the terms of the BSD license as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor -** the names of its contributors may be used to endorse or promote -** products derived from this software without specific prior written -** permission. -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -/* -handler.cpp - -Provides a handler for processing XML elements found by the reader. - -The handler looks for <title> and <link> elements within <item> elements, -and records the text found within them. Link information stored within -rdf:about attributes of <item> elements is also recorded when it is -available. - -For each item found, a signal is emitted which specifies its title and -link information. This may be used by user interfaces for the purpose of -displaying items as they are read. -*/ - -#include <QtGui> - -#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() -{ - inItem = false; - inTitle = false; - inLink = false; - - return true; -} - -/* - Process each starting element in the XML document. - - Nested item, title, or link elements are not allowed, so we return false - if we encounter any of these. We also prohibit multiple definitions of - title strings. - - Link destinations are read by this function if they are specified as - attributes in item elements. - - For all cases not explicitly checked for, we return true to indicate that - the element is acceptable, and that parsing should continue. By doing - this, we can ignore elements in which we are not interested. -*/ - -bool Handler::startElement(const QString &, const QString &, - const QString & qName, const QXmlAttributes &attr) -{ - if (qName == "item") { - - if (inItem) - return false; - else { - inItem = true; - linkString = attr.value("rdf:about"); - } - } - else if (qName == "title") { - - if (inTitle) - return false; - else if (!titleString.isEmpty()) - return false; - else if (inItem) - inTitle = true; - } - else if (qName == "link") { - - if (inLink) - return false; - else if (inItem) - inLink = true; - } - - return true; -} - -/* - Process each ending element in the XML document. - - For recognized elements, we reset flags to ensure that we can read new - instances of these elements. If we have read an item element, emit a - signal to indicate that a new item is available for display. - - We return true to indicate that parsing should continue. -*/ - -bool Handler::endElement(const QString &, const QString &, - const QString & qName) -{ - if (qName == "title" && inTitle) - inTitle = false; - else if (qName == "link" && inLink) - inLink = false; - else if (qName == "item") { - if (!titleString.isEmpty() && !linkString.isEmpty()) - emit newItem(titleString, linkString); - inItem = false; - titleString = ""; - linkString = ""; - } - - return true; -} - -/* - Collect characters when reading the contents of title or link elements - when they occur within an item element. - - We return true to indicate that parsing should continue. -*/ - -bool Handler::characters (const QString &chars) -{ - if (inTitle) - titleString += chars; - else if (inLink) - linkString += chars; - - return true; -} - -/* - Report a fatal parsing error, and return false to indicate to the reader - that parsing should stop. -*/ - -//! [0] -bool Handler::fatalError (const QXmlParseException & exception) -{ - qWarning() << "Fatal error on line" << exception.lineNumber() - << ", column" << exception.columnNumber() << ":" - << exception.message(); - - return false; -} -//! [0] |