/usr/include/kml/base/xml_element.h is in libkml-dev 1.3.0-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// 2. 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.
// 3. Neither the name of Google Inc. 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 AUTHOR ``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 AUTHOR 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.
// This file contains the definition of the XmlElement class.
#ifndef KML_BASE_XML_ELEMENT_H__
#define KML_BASE_XML_ELEMENT_H__
#include "boost/intrusive_ptr.hpp"
#include "kml/base/referent.h"
#include "kml/base/util.h"
#include "kml/base/xml_namespaces.h"
namespace kmlbase {
class XmlFile;
// Forward declare XmlElement to create typedef used within class XmlElement.
class XmlElement;
typedef boost::intrusive_ptr<XmlElement> XmlElementPtr;
// This class represents an XML element. An XmlElement may be in one XmlFile,
// and may have one parent XmlElement. This class is derived from Referent
// such that derived classes can use boost::intrusive_ptr.
class XmlElement : public Referent {
public:
// Get the parent XmlElement if any.
const XmlElement* GetParent() const {
return parent_;
}
// Get the parent XmlFile if any.
const XmlFile* GetXmlFile() const {
return xml_file_;
}
XmlnsId get_xmlns() const {
return xmlns_id_;
}
// This returns true if the passed element is in the same XmlFile or if both
// this XmlElement and the passed element are in no XmlFile. Passing a NULL
// pointer always causes a false return value.
bool InSameXmlFile(const XmlElementPtr& element) const {
return element && xml_file_ == element->xml_file_;
}
// If this element is not already in an XmlFile this associates this element
// with the given XmlFile and true is returned. If this element is already
// in an XmlFile false is returned and that association remains. There is
// no means to detach an XmlElement from an XmlFile.
bool SetXmlFile(const XmlFile* xml_file) {
if (!xml_file_ && xml_file) {
xml_file_ = xml_file;
return true;
}
return false;
}
protected:
// This is an abstract base class and is never created directly.
XmlElement() : xmlns_id_(XMLNS_NONE), parent_(NULL), xml_file_(NULL) {}
void set_xmlns(XmlnsId xmlns_id) {
xmlns_id_ = xmlns_id;
}
// Only a derived class can set its parent. This returns false if this
// XmlElement already has a parent or if this XmlElement is in a different
// XmlFile.
bool SetParent(const XmlElementPtr& parent) {
if (!parent_ && parent && InSameXmlFile(parent)) {
parent_ = parent.get();
return true;
}
return false;
}
private:
XmlnsId xmlns_id_;
const XmlElement* parent_; // Can't ref count due to circularity.
const XmlFile* xml_file_;
LIBKML_DISALLOW_EVIL_CONSTRUCTORS(XmlElement);
};
} // end namespace kmlbase
#endif // KML_BASE_XML_ELEMENT_H__
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