/usr/include/syndication/elementwrapper.h is in kdepimlibs5-dev 4:4.13.0-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 | /*
* This file is part of the syndication library
*
* Copyright (C) 2006 Frank Osterfeld <osterfeld@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef SYNDICATION_ELEMENTWRAPPER_H
#define SYNDICATION_ELEMENTWRAPPER_H
#include <QtCore/QString>
#include <boost/shared_ptr.hpp>
#include "ksyndication_export.h"
class QDomElement;
template <class T> class QList;
namespace Syndication {
/**
* A wrapper for XML elements. This is the base class for the (lazy) wrappers
* used in the RSS2 and Atom parsers. The wrapped element can be accessed
* via element(). It also contains several helper functions for XML processing.
*
* @author Frank Osterfeld
*/
class SYNDICATION_EXPORT ElementWrapper
{
public:
/**
* creates a element wrapper wrapping a null element.
* isNull() will return @c true for these instances.
*/
ElementWrapper();
/**
* Copy constructor.The instances share the same element.
* @param other the element wrapper to copy
*/
ElementWrapper(const ElementWrapper& other);
/**
* Creates an element wrapper wrapping the DOM element @c element
* @param element the element to wrap
*/
ElementWrapper(const QDomElement& element); // implicit
/**
* destructor
*/
virtual ~ElementWrapper();
/**
* Assigns another element wrapper to this one. Both instances
* share the same wrapped element instance.
*
* @param other the element wrapper to assign
* @return reference to this instance
*/
ElementWrapper& operator=(const ElementWrapper& other);
/**
* compares two wrappers. Two wrappers are equal if and only if
* the wrapped elements are equal.
* @param other another element wrapper to compare to
*/
bool operator==(const ElementWrapper& other) const;
/**
* returns the wrapped resource.
*/
const QDomElement& element() const;
/**
* returns whether the wrapped element is a null element
* @return @c true if isNull() is true for the wrapped element,
* @c false otherwise
*/
bool isNull() const;
/**
* returns the xml:base value to be used for the wrapped element.
* The xml:base attribute establishes the base URI for resolving any
* relative references found in its scope (its own element and all
* descendants). (See also completeURI())
*
* @return the xml:base value, or a null string if not set
*/
QString xmlBase() const;
/**
* returns the xml:lang value to be used for the wrapped element.
* The xml:lang attribute indicates the natural language for its element
* and all descendants.
*
* @return the xml:lang value, or a null string if not set
*/
QString xmlLang() const;
/**
* completes relative URIs with a prefix specified via xml:base.
*
* Example:
* @code
* xml:base="http://www.foo.org/", uri="announcements/bar.html"
* @endcode
*
* is completed to @c http://www.foo.org/announcements/bar.html
*
* See also xmlBase().
*
* @param uri a possibly relative URI
* @return the resolved, absolute URI (using xml:base), if @c uri is
* a relative, valid URI. If @c uri is not valid, absolute, or no
* xml:base is set in the scope of this element, @c uri is returned
* unmodified.
*/
QString completeURI(const QString& uri) const;
/**
* extracts the text from a child element, respecting namespaces. If
* there is more than one child with the same tag name, the first one is
* processed.
* For instance, when the wrapped element is @c <hisElement>:
* @code
* <thisElement>
* <atom:title>Hi there</atom:title>
* </thisElement>
* @endcode
* @code
* extractElementText("http://www.w3.org/2005/Atom", "title")
* @endcode
* will return the text content of @c atom:title, "Hi there".
* (Assuming that "atom" is defined as "http://www.w3.org/2005/Atom")
*
* @param namespaceURI the namespace URI of the element to extract
* @param localName the local name (local within its namespace) of the
* element to extract
* @return the (trimmed) text content of @c localName, or a null string
* if there is no such tag
*/
QString extractElementTextNS(const QString& namespaceURI,
const QString& localName) const;
/**
* extracts the text from a child element, ignoring namespaces. For
* instance, when the wrapped element is @c <thisElement>:
* @code
* <thisElement>
* <title>Hi there</title>
* </thisElement>
* @endcode
* @c extractElementText("title") will return the text content
* of @c title, "Hi there".
*
* @param tagName the name of the element to extract
* @return the (trimmed) text content of @c tagName, or a null string if
* there is no such tag
*/
QString extractElementText(const QString& tagName) const;
/**
* returns all child elements with tag name @c tagName
* Contrary to QDomElement::elementsByTagName() only direct descendents
* are returned.
*
* @param tagName the tag name of the elements to extract
* @return a list of child elements with the given tag name
*/
QList<QDomElement> elementsByTagName(const QString& tagName) const;
/**
* returns the child nodes of the wrapped element as XML.
*
* See childNodesAsXML(const QDomElement& parent) for details
* @return XML serialization of the wrapped element's children
*/
QString childNodesAsXML() const;
/**
* concatenates the XML representations of all children. Example: If
* @c parent is an @c xhtml:body element like
* @code
* <xhtml:body><p>foo</p><blockquote>bar</blockquote></xhtml:body>
* @endcode
* this function returns
* @code
* <p>foo</p><blockquote>bar</blockquote>
* @endcode
*
* namespace and xml:base information are preserved.
*
* @param parent the DOM element whose children should be returned as
* XML
* @return XML serialization of parent's children
*/
static QString childNodesAsXML(const QDomElement& parent);
/**
* returns all child elements with tag name @c tagname
* and namespace URI @c nsURI.
* Contrary to QDomElement::elementsByTagNameNS() only direct
* descendents are returned
*
* @param nsURI the namespace URI
* @param tagName the local name (local within its namespace) of the
* element to search for
* @return a list of child elements with the given namespace URI
* and tag name
*/
QList<QDomElement> elementsByTagNameNS(const QString& nsURI,
const QString& tagName) const;
/**
* searches the direct children of the wrapped element for an element
* with a given namespace and tag name.
*
* @param nsURI the namespace URI
* @param tagName the local name (local within its namespace) of the
* element to search for
* @return the first child element with the given namespace URI and tag
* name, or a null element if no such element was found.
*/
QDomElement firstElementByTagNameNS(const QString& nsURI,
const QString& tagName) const;
/**
* Returns the wrapped element's text or an empty string.
* For more information, see QDomElement::text();
*/
QString text() const;
/**
* Returns the attribute called name. If the attribute does not exist
* defValue is returned.
* (which is a null string by default).
*
* @param name tag name
* @param defValue the default value
*/
QString attribute(const QString& name,
const QString& defValue=QString()) const;
/**
* Returns the attribute with the local @c name localName and the
* namespace URI @c nsURI.
* If the attribute does not exist @c defValue is returned (which is a
* null string by default).
*
* @param nsURI namespace URI
* @param localName local tag name
* @param defValue the default value
*/
QString attributeNS(const QString& nsURI, const QString& localName,
const QString& defValue=QString()) const;
/**
* Returns true if this element has an attribute called @c name;
* otherwise returns @c false.
*
* @param name the attribute name (without namespace)
*/
bool hasAttribute(const QString& name) const;
/**
* Returns true if this element has an attribute with the local name
* localName and the namespace URI nsURI; otherwise returns false.
*
* @param nsURI namespace URI
* @param localName local attribute name
*/
bool hasAttributeNS(const QString& nsURI, const QString& localName) const;
private:
class ElementWrapperPrivate;
boost::shared_ptr<ElementWrapperPrivate> d;
};
} // namespace Syndication
#endif // SYNDICATION_ELEMENTWRAPPER_H
|