diff options
Diffstat (limited to 'src/xml/doc/snippets/code/src_xml_dom_qdom.cpp')
| -rw-r--r-- | src/xml/doc/snippets/code/src_xml_dom_qdom.cpp | 169 |
1 files changed, 41 insertions, 128 deletions
diff --git a/src/xml/doc/snippets/code/src_xml_dom_qdom.cpp b/src/xml/doc/snippets/code/src_xml_dom_qdom.cpp index f7d81f676f..7c7a59745b 100644 --- a/src/xml/doc/snippets/code/src_xml_dom_qdom.cpp +++ b/src/xml/doc/snippets/code/src_xml_dom_qdom.cpp @@ -1,145 +1,82 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, 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 The Qt Company Ltd 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause +#include <iostream> +#include <cstring> +#include <QFile> +#include <QDomDocument> +#include <QDomImplementation> + +void NodeElements(); +void DomText(); +void FirstElement(); +void FileContent(); +void DocAppend(); +void XML_snippet_main(); + +using namespace std; //! [0] +void XML_snippet_main() +{ QDomDocument doc; QDomImplementation impl; - // This will create the element, but the resulting XML document will // be invalid, because '~' is not a valid character in a tag name. -impl.setInvalidDataPolicy(QDomImplementation::AcceptInvalidData); +impl.setInvalidDataPolicy(QDomImplementation::AcceptInvalidChars); QDomElement elt1 = doc.createElement("foo~bar"); // This will create an element with the tag name "foobar". -impl.setInvalidDataPolicy(QDomImplementation::DropInvalidData); +impl.setInvalidDataPolicy(QDomImplementation::DropInvalidChars); QDomElement elt2 = doc.createElement("foo~bar"); // This will create a null element. impl.setInvalidDataPolicy(QDomImplementation::ReturnNullNode); QDomElement elt3 = doc.createElement("foo~bar"); +} //! [0] - +void NodeElements() +{ //! [1] QDomDocument d; +QString someXML; + d.setContent(someXML); QDomNode n = d.firstChild(); while (!n.isNull()) { if (n.isElement()) { QDomElement e = n.toElement(); - cout << "Element name: " << e.tagName() << Qt::endl; + cout << "Element name: " << qPrintable(e.tagName()) << '\n'; break; } n = n.nextSibling(); } //! [1] - //! [2] QDomDocument document; QDomElement element1 = document.documentElement(); QDomElement element2 = element1; //! [2] - //! [3] QDomElement element3 = document.createElement("MyElement"); QDomElement element4 = document.createElement("MyElement"); //! [3] - -//! [4] -<body> -<h1>Heading</h1> -<p>Hello <b>you</b></p> -</body> -//! [4] - - -//! [5] -<h1>Heading</h1> -<p>The text...</p> -<h2>Next heading</h2> -//! [5] - - -//! [6] -<h1>Heading</h1> -<p>The text...</p> -<h2>Next heading</h2> -//! [6] - - -//! [7] -<link href="http://qt-project.org" color="red" /> -//! [7] - - //! [8] -QDomElement e = //... +QDomElement e; //... QDomAttr a = e.attributeNode("href"); -cout << a.value() << Qt::endl; // prints "http://qt-project.org" +cout << qPrintable(a.value()) << '\n'; // prints "http://qt-project.org" a.setValue("http://qt-project.org/doc"); // change the node's attribute QDomAttr a2 = e.attributeNode("href"); -cout << a2.value() << Qt::endl; // prints "http://qt-project.org/doc" +cout << qPrintable(a2.value()) << '\n'; // prints "http://qt-project.org/doc" //! [8] +} - -//! [9] -QDomElement e = //... -//... -QString s = e.text() -//! [9] - - +void DomText() +{ +QDomDocument doc; //! [10] QString text; QDomElement element = doc.documentElement(); @@ -151,37 +88,10 @@ for(QDomNode n = element.firstChild(); !n.isNull(); n = n.nextSibling()) } //! [10] - -//! [11] -QDomDocument doc = // ... -QDomElement root = doc.firstChildElement("database"); -QDomElement elt = root.firstChildElement("entry"); -for (; !elt.isNull(); elt = elt.nextSiblingElement("entry")) { - // ... } -//! [11] - - -//! [12] -<img src="myimg.png"> -//! [12] - - -//! [13] -<h1>Hello <b>Qt</b> <![CDATA[<xml is cool>]]></h1> -//! [13] - - -//! [14] -Hello Qt <xml is cool> -//! [14] - - -//! [15] -<!-- this is a comment --> -//! [15] - +void FileContent() +{ //! [16] QDomDocument doc("mydocument"); QFile file("mydocument.xml"); @@ -201,7 +111,7 @@ QDomNode n = docElem.firstChild(); while(!n.isNull()) { QDomElement e = n.toElement(); // try to convert the node to an element. if(!e.isNull()) { - cout << qPrintable(e.tagName()) << Qt::endl; // the node really is an element. + cout << qPrintable(e.tagName()) << '\n'; // the node really is an element. } n = n.nextSibling(); } @@ -211,10 +121,12 @@ QDomElement elem = doc.createElement("img"); elem.setAttribute("src", "myimage.png"); docElem.appendChild(elem); //! [16] +} - +void DocAppend() +{ //! [17] -QDomDocument doc("MyML"); +QDomDocument doc; QDomElement root = doc.createElement("MyML"); doc.appendChild(root); @@ -226,3 +138,4 @@ tag.appendChild(t); QString xml = doc.toString(); //! [17] +} |