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/*************************************************************************
** XMLNode.hpp **
** **
** This file is part of dvisvgm -- a fast DVI to SVG converter **
** Copyright (C) 2005-2019 Martin Gieseking <martin.gieseking@uos.de> **
** **
** This program is free software; you can redistribute it and/or **
** modify it under the terms of the GNU General Public License as **
** published by the Free Software Foundation; either version 3 of **
** the License, or (at your option) any later version. **
** **
** This program 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 General Public License for more details. **
** **
** You should have received a copy of the GNU General Public License **
** along with this program; if not, see <http://www.gnu.org/licenses/>. **
*************************************************************************/
#ifndef XMLNODE_HPP
#define XMLNODE_HPP
#include <deque>
#include <map>
#include <memory>
#include <ostream>
#include <string>
#include <vector>
#include "utility.hpp"
class XMLNode {
public:
virtual ~XMLNode () =default;
virtual std::unique_ptr<XMLNode> clone () const =0;
virtual void clear () =0;
virtual std::ostream& write (std::ostream &os) const =0;
};
class XMLElementNode : public XMLNode {
public:
using AttribMap = std::map<std::string,std::string>;
using ChildList = std::deque<std::unique_ptr<XMLNode>>;
public:
XMLElementNode (const std::string &name);
XMLElementNode (const XMLElementNode &node);
XMLElementNode (XMLElementNode &&node);
std::unique_ptr<XMLNode> clone () const override {return util::make_unique<XMLElementNode>(*this);}
void clear () override;
void addAttribute (const std::string &name, const std::string &value);
void addAttribute (const std::string &name, double value);
XMLNode* append (std::unique_ptr<XMLNode> &&child);
XMLNode* append (const std::string &str);
XMLNode* prepend (std::unique_ptr<XMLNode> &&child);
void remove (const XMLNode *child);
bool insertAfter (std::unique_ptr<XMLNode> &&child, XMLNode *sibling);
bool insertBefore (std::unique_ptr<XMLNode> &&child, XMLNode *sibling);
bool hasAttribute (const std::string &name) const;
const char* getAttributeValue (const std::string &name) const;
bool getDescendants (const char *name, const char *attrName, std::vector<XMLElementNode*> &descendants) const;
XMLElementNode* getFirstDescendant (const char *name, const char *attrName, const char *attrValue) const;
std::ostream& write (std::ostream &os) const override;
bool empty () const {return _children.empty();}
const ChildList& children () const {return _children;}
const std::string& getName () const {return _name;}
private:
std::string _name; // element name (<name a1="v1" .. an="vn">...</name>)
AttribMap _attributes;
ChildList _children; // child nodes
};
class XMLTextNode : public XMLNode {
public:
XMLTextNode (const std::string &str) : _text(str) {}
XMLTextNode (std::string &&str) : _text(std::move(str)) {}
std::unique_ptr<XMLNode> clone () const override {return util::make_unique<XMLTextNode>(*this);}
void clear () override {_text.clear();}
void append (std::unique_ptr<XMLNode> &&node);
void append (std::unique_ptr<XMLTextNode> &&node);
void append (const std::string &str);
void prepend (std::unique_ptr<XMLNode> &&node);
std::ostream& write (std::ostream &os) const override {return os << _text;}
const std::string& getText () const {return _text;}
private:
std::string _text;
};
class XMLCommentNode : public XMLNode {
public:
XMLCommentNode (const std::string &str) : _text(str) {}
XMLCommentNode (std::string &&str) : _text(std::move(str)) {}
std::unique_ptr<XMLNode> clone () const override {return util::make_unique<XMLCommentNode>(*this);}
void clear () override {_text.clear();}
std::ostream& write (std::ostream &os) const override {return os << "<!--" << _text << "-->";}
private:
std::string _text;
};
class XMLCDataNode : public XMLNode {
public:
XMLCDataNode () =default;
XMLCDataNode (const std::string &d) : _data(d) {}
XMLCDataNode (std::string &&d) : _data(std::move(d)) {}
std::unique_ptr<XMLNode> clone () const override {return util::make_unique<XMLCDataNode>(*this);}
void clear () override {_data.clear();}
void append (std::string &&str);
std::ostream& write (std::ostream &os) const override;
private:
std::string _data;
};
inline std::ostream& operator << (std::ostream &os, const XMLElementNode &node) {return node.write(os);}
inline std::ostream& operator << (std::ostream &os, const XMLTextNode &node) {return node.write(os);}
inline std::ostream& operator << (std::ostream &os, const XMLCommentNode &node) {return node.write(os);}
inline std::ostream& operator << (std::ostream &os, const XMLCDataNode &node) {return node.write(os);}
#endif
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