/*
 * (C) Copyright 1996-2012 ECMWF.
 * 
 * This software is licensed under the terms of the Apache Licence Version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0. 
 * In applying this licence, ECMWF does not waive the privileges and immunities 
 * granted to it by virtue of its status as an intergovernmental organisation nor
 * does it submit to any jurisdiction.
 */

#ifndef SplitTool_H
#define SplitTool_H

#include "eckit/io/Length.h"
#include "eckit/io/Offset.h"
#include "Tool.h"

namespace odb {
namespace tool {

class SplitTool : public Tool {
public:
	SplitTool (int argc, char *argv[]); 

	void run(); 

	static void help(std::ostream &o)
	{
		o << "Splits file according to given template";
	}

	static void usage(const std::string& name, std::ostream &o)
	{
		o << name << " [-no_verification] [-maxopenfiles <N>] <input.odb> <output_template.odb>";
	}

	static void split(const eckit::PathName&, const std::string&, size_t, bool verify=true);
	static void presortAndSplit(const eckit::PathName&, const std::string&);

    static std::vector<std::pair<eckit::Offset,eckit::Length> > getChunks(const eckit::PathName&, size_t maxExpandedSize = 100*1024*1024);
private:
// No copy allowed
    SplitTool(const SplitTool&);
    SplitTool& operator=(const SplitTool&);

	static std::string genOrderBySelect(const std::string&, const std::string&);

	long maxOpenFiles_;
	bool sort_;
};

} // namespace tool 
} // namespace odb 

#endif 
