138 lines
4.3 KiB
C++
138 lines
4.3 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2009 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#ifndef OSGDB_XML_PARSER
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#define OSGDB_XML_PARSER 1
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#include <osgDB/Registry>
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namespace osgDB {
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// forward declare
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class XmlNode;
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/** read an Xml file, find the file in Options DataFilePathList.*/
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extern OSGDB_EXPORT XmlNode* readXmlFile(const std::string& filename,const Options* options);
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/** read an Xml file, find the file in osgDB::Registry's eaderWriter::Options DataFilePathList.*/
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inline XmlNode* readXmlFile(const std::string& filename)
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{
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return readXmlFile(filename, osgDB::Registry::instance()->getOptions());
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}
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/** read an Xml from from an istream.*/
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extern OSGDB_EXPORT XmlNode* readXmlStream(std::istream& fin);
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/** XmlNode class for very basic reading and writing of xml files.*/
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class OSGDB_EXPORT XmlNode : public osg::Referenced
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{
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public:
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XmlNode();
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enum NodeType
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{
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UNASSIGNED,
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ATOM,
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NODE,
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GROUP,
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ROOT,
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COMMENT,
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INFORMATION
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};
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typedef std::map< std::string, std::string > Properties;
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typedef std::vector< osg::ref_ptr<XmlNode> > Children;
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NodeType type;
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std::string name;
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std::string contents;
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Properties properties;
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Children children;
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public:
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class OSGDB_EXPORT Input
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{
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public:
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Input();
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Input(const Input&);
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~Input();
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typedef std::string::size_type size_type;
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void open(const std::string& filename);
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void attach(std::istream& istream);
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void readAllDataIntoBuffer();
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operator bool () const { return _currentPos<_buffer.size(); }
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size_type currentPosition() const { return _currentPos; }
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int get() { if (_currentPos<_buffer.size()) return _buffer[_currentPos++]; else return -1; }
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int operator [] (size_type i) const { if ((_currentPos+i)<_buffer.size()) return _buffer[_currentPos+i]; else return -1; }
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void operator ++ () { if (_currentPos<_buffer.size()) ++_currentPos; }
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void operator += (size_type n) { if ((_currentPos+n)<_buffer.size()) _currentPos+=n; else _currentPos = _buffer.size(); }
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void skipWhiteSpace();
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std::string substr(size_type pos, size_type n=std::string::npos) { return (_currentPos<_buffer.size()) ? _buffer.substr(_currentPos+pos,n) : std::string(); }
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size_type find(const std::string& str)
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{
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if (_currentPos<_buffer.size())
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{
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size_type pos = _buffer.find(str, _currentPos);
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if (pos==std::string::npos) return std::string::npos;
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else return pos-_currentPos;
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} else return std::string::npos;
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}
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bool match(const std::string& str) { return (_currentPos<_buffer.size()) ? _buffer.compare(_currentPos, str.size(), str)==0 : false; }
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typedef std::map< std::string, int > ControlToCharacterMap;
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typedef std::map< int, std::string> CharacterToControlMap;
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void addControlToCharacter(const std::string& control, int c);
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ControlToCharacterMap _controlToCharacterMap;
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CharacterToControlMap _characterToControlMap;
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private:
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void setUpControlMappings();
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size_type _currentPos;
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std::ifstream _fin;
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std::string _buffer;
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};
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bool read(Input& input);
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bool write(std::ostream& fout) const;
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bool writeString(std::ostream& fout, const std::string& str) const;
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};
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}
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#endif
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