xml.h

#ifndef GM_XML_H
#define GM_XML_H

#include <string>
#include <map>
#include <vector>
#include <stack>

#include "gm/gm.h"
#include "gm/wrapexpat.h"

namespace GNUMessenger
{
    using namespace std;

    class XMLParser: public Expat
    {
        
    public:

        class ParseFailure: public Exception
        {
        public:
            ParseFailure(const string& msg): Exception(msg) {}
        };

        class DiskError: public Exception
        {
        public:
            DiskError(const string& msg): Exception(msg) {}
        };

        enum Type { File, String };

        XMLParser(const string &data="",Type type=XMLParser::String);

        XMLParser(XMLNode &root);

        ~XMLParser();

        int tree_to_xml(string &line);

        int tree_to_file(const string &filename);
       
        vector<XMLNode> get_tags(const string &key);

        XMLNode &get_root() { return root;}

        int lock(const string &fname);
        int release(const string &fname);
        int bad() { return status;}
        int good() { return status == 0;}

        static int printTag(const XMLNode &node, string &ret,int indent=0);
        int getParsed() const { return 0; }

        static string escape(string str);


    protected:
        
        virtual void recievedTag(XMLNode &n);
        virtual void rootTagRecieved(XMLNode &n);
        virtual void parserError(const string& errorMsg, int line);

    private:

        void init(const string &line, Type type);

        XMLNode root;
        int status;
    };

} // !GNUMessenger

#endif // !GM_XML_H

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