/******************************************************************************
**
** Copyright (C) 2009-2011 Kyle Lutz <kyle.r.lutz@gmail.com>
** All rights reserved.
**
** This file is a part of the chemkit project. For more information
** see <http://www.chemkit.org>.
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** modification, are permitted provided that the following conditions
** are met:
**
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**     contributors may be used to endorse or promote products derived
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******************************************************************************/

#ifndef CHEMKIT_MOLECULEFILEFORMAT_H
#define CHEMKIT_MOLECULEFILEFORMAT_H

#include "io.h"

#include <string>
#include <vector>
#include <istream>
#include <ostream>

#include <boost/iostreams/device/mapped_file.hpp>

#include <chemkit/plugin.h>
#include <chemkit/variant.h>

namespace chemkit {

class MoleculeFile;
class MoleculeFileFormatPrivate;

class CHEMKIT_IO_EXPORT MoleculeFileFormat
{
public:
    // construction and destruction
    virtual ~MoleculeFileFormat();

    // properties
    std::string name() const;

    // options
    void setOption(const std::string &name, const Variant &value);
    Variant option(const std::string &name) const;

    // input and output
    virtual bool read(std::istream &input, MoleculeFile *file);
    virtual bool readMappedFile(const boost::iostreams::mapped_file_source &input, MoleculeFile *file);
    virtual bool write(const MoleculeFile *file, std::ostream &output);

    // error handling
    std::string errorString() const;

    // static methods
    static MoleculeFileFormat* create(const std::string &format);
    static std::vector<std::string> formats();

protected:
    MoleculeFileFormat(const std::string &name);
    void setErrorString(const std::string &error);
    virtual Variant defaultOption(const std::string &name) const;

private:
    MoleculeFileFormatPrivate* const d;
};

} // end chemkit namespace

/// Registers a molecule file format with \p name.
#define CHEMKIT_REGISTER_MOLECULE_FILE_FORMAT(name, className) \
    CHEMKIT_REGISTER_PLUGIN_CLASS(name, chemkit::MoleculeFileFormat, className)

#endif // CHEMKIT_MOLECULEFILEFORMAT_H
