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/*
* This file is part of sxml - stupid XML generator
*
* Copyright (c) 2011 Oskari Timperi
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute
* it freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must
* not claim that you wrote the original software. If you use this
* software in a product, an acknowledgment in the product documentation
* would be appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must
* not be misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*/
#ifndef SXML_H
#define SXML_H
#include <string>
#include <sstream>
#include <map>
#include <vector>
namespace sxml {
class node;
class element;
class comment;
typedef std::vector<node *> node_list;
//! Base class for nodes, e.g. an element, a comment, text, ...
class node
{
public:
//! Constructs an empty node. If parent is not NULL, the constructed node
//! is added to the given parent as a child.
explicit node(node *parent = NULL);
//! Copy constructor.
node(const node &n);
//! Destructor. Frees the children of this node.
virtual ~node();
//! Returns a string representation of this node. Derived classes should
//! implement this.
virtual std::string to_string(bool nice , int indent = 0) const;
//! Adds a child node to this node. Takes the ownership of the given
//! node. Returns a pointer to the child.
node *add_child(node *child);
//! Adds an element with the given tag to this node. Returns a pointer to
//! the element node.
element *add_element(const std::string &tag);
//! Adds a comment to this node. Returns a pointer to the comment node.
comment *add_comment(const std::string &text);
protected:
//! Returns a list of children in this node.
const node_list &children() const;
//! Clones this node. The cloned node has clones of all the children of
//! the original. The cloned node doesn't have a parent.
virtual node *clone();
//! Clone the children of this node. The children do not have a parent set.
node_list clone_children() const;
//! Is this node modified? Derived classes can use this information for
//! caching.
bool modified() const;
//! Set the modified status of this node. If modified is true and the node
//! has a parent, set_modified() also calls the parents set_modified().
void set_modified(bool modified) const;
private:
//! Pointer to the parent node.
node *m_parent;
//! List of the children.
node_list m_children;
//! Is this node modified.
mutable bool m_modified;
};
//! A node used for comments.
class comment: public node
{
public:
explicit comment(node *parent = NULL);
explicit comment(const std::string &text, node *parent = NULL);
virtual std::string to_string(bool nice = false, int indent = 0) const;
private:
std::string m_text;
};
class element: public node
{
public:
//! Constructs an empty element (i.e., no name,
//! children, attributes) with the specified parent.
explicit element(node *parent = NULL);
//! Constructs an element with the specified name and parent.
explicit element(const std::string &name, node *parent = NULL);
//! Copy constructor.
element(const element &elem);
virtual ~element();
//! Creates a textual representation of the element. If nice
//! is true, the returned string is formatted with indentations
//! and newlines.
virtual std::string to_string(bool nice = false, int indent = 0) const;
//! Set the text for this element. An element can either have text
//! or children. If an element has both, children take precedence
//! when calling to_string(). Returns a pointer to this element.
template<class T> element *set_text(const T &text);
//! Set an attribute for this element with the specified name and
//! value. Returns a pointer to this element.
template<class T> element *set_attr(const std::string &name,
const T &value);
private:
typedef std::map<std::string, std::string> attribute_map;
attribute_map m_attributes;
std::string m_name;
std::string m_text;
mutable std::string m_cached;
};
template<class T> element *element::set_text(const T &text)
{
std::string s;
std::stringstream ss(s);
ss << text;
return set_text<std::string>(ss.str());
}
template<> element *element::set_text<>(const std::string &text);
template<class T> element *element::set_attr(const std::string &name,
const T &value)
{
std::string s;
std::stringstream ss(s);
ss << value;
return set_attr<std::string>(name, ss.str());
}
template<> element *element::set_attr(const std::string &name,
const std::string &value);
} // namespace sxml
#endif // SXML_H
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