mapnik/plugins/input/shape/dbffile.hpp

/*****************************************************************************
 * 
 * This file is part of Mapnik (c++ mapping toolkit)
 *
 * Copyright (C) 2006 Artem Pavlenko
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 *****************************************************************************/

#ifndef DBFFILE_HH
#define DBFFILE_HH

#include <vector>
#include <string>
#include <fstream>
#include <cassert>

#include "feature.hpp"

using namespace mapnik;

struct field_descriptor
{
    int index_;
    std::string name_;
    char type_;
    int length_;
    int dec_;
    int offset_;
};

class dbf_file
{
    private:

        int num_records_;
        int num_fields_;
        int record_length_;
        std::vector<field_descriptor> fields_;
        std::ifstream file_;
        char* record_;
    public:
        dbf_file();
        dbf_file(const char* file_name);
        dbf_file(const std::string& file_name);
        ~dbf_file();
        bool open(const std::string& file_name);
        bool is_open();
        void close();
        int num_records() const;
        int num_fields() const;
        field_descriptor const& descriptor(int col) const;
        void move_to(int index);
        std::string string_value(int col) const;
        void add_attribute(int col,Feature const& f) const throw();
    private:
        dbf_file(const dbf_file&);
        dbf_file& operator=(const dbf_file&);
        void read_header();
        int read_short();
        int read_int();
        void skip(int bytes);
};
#endif                                            //DBFFILE_HH