SplitTool.h

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/*
 * (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 <string>
#include <vector>
#include <ostream>
 
#include "eckit/io/Length.h"
#include "eckit/io/Offset.h"
#include "Tool.h"
 
namespace odc {
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 odc 
 
#endif