summaryrefslogtreecommitdiff
path: root/dviware/dvisvgm/src/XMLNode.hpp
diff options
context:
space:
mode:
authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /dviware/dvisvgm/src/XMLNode.hpp
Initial commit
Diffstat (limited to 'dviware/dvisvgm/src/XMLNode.hpp')
-rw-r--r--dviware/dvisvgm/src/XMLNode.hpp226
1 files changed, 226 insertions, 0 deletions
diff --git a/dviware/dvisvgm/src/XMLNode.hpp b/dviware/dvisvgm/src/XMLNode.hpp
new file mode 100644
index 0000000000..a8def772d8
--- /dev/null
+++ b/dviware/dvisvgm/src/XMLNode.hpp
@@ -0,0 +1,226 @@
+/*************************************************************************
+** 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 XMLCData;
+class XMLComment;
+class XMLElement;
+class XMLText;
+
+class XMLNode {
+ friend class XMLElement;
+
+ template <typename T>
+ T* cast (const T* (XMLNode::*func)() const) {
+ return const_cast<T*>((const_cast<const XMLNode*>(this)->*func)());
+ }
+
+ public:
+ XMLNode () =default;
+ XMLNode (const XMLNode &node) : _next(nullptr) {}
+ XMLNode (XMLNode &&node) noexcept : _parent(node._parent), _prev(node._prev), _next(std::move(node._next)) {}
+ virtual ~XMLNode () =default;
+ virtual std::unique_ptr<XMLNode> clone () const =0;
+ virtual void clear () =0;
+ virtual std::ostream& write (std::ostream &os) const =0;
+ virtual const XMLElement* toElement () const {return nullptr;}
+ virtual const XMLText* toText () const {return nullptr;}
+ virtual const XMLText* toWSNode () const {return nullptr;}
+ virtual const XMLComment* toComment () const {return nullptr;}
+ virtual const XMLCData* toCData () const {return nullptr;}
+ XMLElement* toElement () {return cast<XMLElement>(&XMLNode::toElement);}
+ XMLText* toText () {return cast<XMLText>(&XMLNode::toText);}
+ XMLComment* toComment () {return cast<XMLComment>(&XMLNode::toComment);}
+ XMLCData* toCData () {return cast<XMLCData>(&XMLNode::toCData);}
+ XMLNode* parent () const {return _parent;}
+ XMLNode* prev () const {return _prev;}
+ XMLNode* next () const {return _next.get();}
+
+ protected:
+ XMLNode* insertNext (std::unique_ptr<XMLNode> node);
+ std::unique_ptr<XMLNode> removeNext ();
+ void parent (XMLNode *p) {_parent = p;}
+ void prev (XMLNode *p) {_prev = p;}
+
+ private:
+ XMLNode *_parent=nullptr; ///< pointer to parent node
+ XMLNode *_prev=nullptr; ///< pointer to preceding sibling
+ std::unique_ptr<XMLNode> _next; ///< pointer to next sibling (incl. ownership)
+};
+
+
+class XMLNodeIterator {
+ public:
+ XMLNodeIterator () =default;
+ explicit XMLNodeIterator (XMLNode *curr) : _curr(curr) {}
+ XMLNodeIterator& operator ++ () {_curr = _curr->next(); return *this;}
+ XMLNodeIterator& operator -- () {_curr = _curr->prev(); return *this;}
+ XMLNodeIterator operator ++ (int) {auto p=_curr; _curr = _curr->next(); return XMLNodeIterator(p);}
+ XMLNodeIterator operator -- (int) {auto p=_curr; _curr = _curr->prev(); return XMLNodeIterator(p);}
+ XMLNode* operator * () {return _curr;}
+ XMLNode& operator -> () {return *_curr;}
+ bool operator == (const XMLNodeIterator &it) const {return _curr == it._curr;}
+ bool operator != (const XMLNodeIterator &it) const {return _curr != it._curr;}
+
+ private:
+ XMLNode *_curr=nullptr;
+};
+
+
+class ConstXMLNodeIterator {
+ public:
+ ConstXMLNodeIterator () =default;
+ explicit ConstXMLNodeIterator (const XMLNode *curr) : _curr(curr) {}
+ ConstXMLNodeIterator& operator ++ () {_curr = _curr->next(); return *this;}
+ ConstXMLNodeIterator& operator -- () {_curr = _curr->prev(); return *this;}
+ ConstXMLNodeIterator operator ++ (int) {auto p=_curr; _curr = _curr->next(); return ConstXMLNodeIterator(p);}
+ ConstXMLNodeIterator operator -- (int) {auto p=_curr; _curr = _curr->prev(); return ConstXMLNodeIterator(p);}
+ const XMLNode* operator * () {return _curr;}
+ const XMLNode& operator -> () {return *_curr;}
+ bool operator == (const ConstXMLNodeIterator &it) const {return _curr == it._curr;}
+ bool operator != (const ConstXMLNodeIterator &it) const {return _curr != it._curr;}
+
+ private:
+ const XMLNode *_curr=nullptr;
+};
+
+
+class XMLElement : public XMLNode {
+ public:
+ struct Attribute {
+ Attribute (std::string nam, std::string val) : name(std::move(nam)), value(std::move(val)) {}
+ std::string name;
+ std::string value;
+ };
+ using Attributes = std::vector<Attribute>;
+ static bool WRITE_NEWLINES; ///< insert line breaks after element tags?
+
+ public:
+ explicit XMLElement (std::string name);
+ XMLElement (const XMLElement &node);
+ XMLElement (XMLElement &&node) noexcept;
+ std::unique_ptr<XMLNode> clone () const override {return util::make_unique<XMLElement>(*this);}
+ void clear () override;
+ void addAttribute (const std::string &name, const std::string &value);
+ void addAttribute (const std::string &name, double value);
+ void removeAttribute (const std::string &name);
+ XMLNode* append (std::unique_ptr<XMLNode> child);
+ XMLNode* append (const std::string &str);
+ XMLNode* prepend (std::unique_ptr<XMLNode> child);
+ XMLNode* insertAfter (std::unique_ptr<XMLNode> child, XMLNode *sibling);
+ XMLNode* 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<XMLElement*> &descendants) const;
+ XMLElement* getFirstDescendant (const char *name, const char *attrName, const char *attrValue) const;
+ XMLNode* firstChild () const {return _firstChild.get();}
+ XMLNode* lastChild () const {return _lastChild;}
+ std::ostream& write (std::ostream &os) const override;
+ bool empty () const {return !_firstChild;}
+// const Children& children () const {return _children;}
+ Attributes& attributes () {return _attributes;}
+ XMLNodeIterator begin () {return XMLNodeIterator(_firstChild.get());}
+ XMLNodeIterator end () {return XMLNodeIterator(nullptr);}
+ ConstXMLNodeIterator begin () const {return ConstXMLNodeIterator(_firstChild.get());}
+ ConstXMLNodeIterator end () const {return ConstXMLNodeIterator(nullptr);}
+ const std::string& name () const {return _name;}
+ const XMLElement* toElement () const override {return this;}
+
+ static std::unique_ptr<XMLNode> remove (XMLNode *child);
+ static XMLElement* wrap (XMLNode *first, XMLNode *last, const std::string &name);
+ static XMLNode* unwrap (XMLElement *child);
+
+ protected:
+ Attribute* getAttribute (const std::string &name);
+ const Attribute* getAttribute (const std::string &name) const;
+ XMLNode* insertFirst (std::unique_ptr<XMLNode> child);
+ XMLNode* insertLast (std::unique_ptr<XMLNode> child);
+
+ private:
+ std::string _name; // element name (<name a1="v1" .. an="vn">...</name>)
+ std::vector<Attribute> _attributes;
+ std::unique_ptr<XMLNode> _firstChild; ///< pointer to first child node (incl. ownership)
+ XMLNode *_lastChild=nullptr; ///< pointer to last child node
+};
+
+
+class XMLText : public XMLNode {
+ public:
+ explicit XMLText (std::string str) : _text(std::move(str)) {}
+ std::unique_ptr<XMLNode> clone () const override {return util::make_unique<XMLText>(*this);}
+ void clear () override {_text.clear();}
+ void append (std::unique_ptr<XMLNode> node);
+ void append (std::unique_ptr<XMLText> 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;}
+ const XMLText* toText () const override {return this;}
+ const XMLText* toWSNode () const override;
+
+ private:
+ std::string _text;
+};
+
+
+class XMLComment : public XMLNode {
+ public:
+ explicit XMLComment (std::string str) : _text(std::move(str)) {}
+ std::unique_ptr<XMLNode> clone () const override {return util::make_unique<XMLComment>(*this);}
+ void clear () override {_text.clear();}
+ std::ostream& write (std::ostream &os) const override {return os << "<!--" << _text << "-->";}
+ const XMLComment* toComment () const override {return this;}
+
+ private:
+ std::string _text;
+};
+
+
+class XMLCData : public XMLNode {
+ public:
+ XMLCData () =default;
+ explicit XMLCData (std::string data) : _data(std::move(data)) {}
+ std::unique_ptr<XMLNode> clone () const override {return util::make_unique<XMLCData>(*this);}
+ void clear () override {_data.clear();}
+ void append (std::string &&str);
+ std::ostream& write (std::ostream &os) const override;
+ const XMLCData* toCData () const override {return this;}
+
+ private:
+ std::string _data;
+};
+
+
+inline std::ostream& operator << (std::ostream &os, const XMLElement &node) {return node.write(os);}
+inline std::ostream& operator << (std::ostream &os, const XMLText &node) {return node.write(os);}
+inline std::ostream& operator << (std::ostream &os, const XMLComment &node) {return node.write(os);}
+inline std::ostream& operator << (std::ostream &os, const XMLCData &node) {return node.write(os);}
+
+#endif