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/*****************************************************************************
*
* 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_HPP
#define DBFFILE_HPP
#include <mapnik/feature.hpp>
// boost
#include <boost/iostreams/stream.hpp>
#include <boost/iostreams/device/file.hpp>
#include <boost/iostreams/device/mapped_file.hpp>
// stl
#include <vector>
#include <string>
#include <cassert>
using mapnik::transcoder;
using mapnik::Feature;
class mapnik::transcoder;
struct field_descriptor
{
int index_;
std::string name_;
char type_;
int length_;
int dec_;
int offset_;
};
using namespace boost::iostreams;
class dbf_file
{
private:
int num_records_;
int num_fields_;
int record_length_;
std::vector<field_descriptor> fields_;
stream<mapped_file_source> file_;
char* record_;
public:
dbf_file();
dbf_file(const std::string& file_name);
~dbf_file();
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, transcoder const& tr, 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_HPP
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