Component.h

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// -*- lsst-c++ -*-

/* 
 * LSST Data Management System
 * Copyright 2008, 2009, 2010 LSST Corporation.
 * 
 * This product includes software developed by the
 * LSST Project (http://www.lsst.org/).
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program 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 General Public License for more details.
 * 
 * You should have received a copy of the LSST License Statement and 
 * the GNU General Public License along with this program.  If not, 
 * see <http://www.lsstcorp.org/LegalNotices/>.
 */
 
#if !defined(LSST_PEX_UTILS_COMPONENT)            
#define LSST_PEX_UTILS_COMPONENT 1

#include <map>
#include <string>
#include <ostream>
#include <boost/tokenizer.hpp>

namespace lsst {
namespace pex {
namespace logging {


class Component {
public:
    enum { INHERIT_VERBOSITY = -9999};  

    Component(const std::string &name = ".", int verbosity=INHERIT_VERBOSITY);
    ~Component();

    void add(const std::string &name, int verbosity,
             const std::string &separator);

    int  getVerbosity(const std::string &name, const std::string &separator);
    int  highestVerbosity(int highest=0);
    void printVerbosity(std::ostream &fp, int depth = 0);
    void setVerbosity(int verbosity) { _verbosity = verbosity; }

private:
    typedef boost::tokenizer<boost::char_separator<char> > tokenizer;
    typedef std::map<const std::string, Component *> comp_map; // subcomponents

    std::string* _name;         // last part of name of this component
    int          _verbosity;    // verbosity for this component
    comp_map    &_subcomp;      // next level of subcomponents

    void add(tokenizer::iterator token, const tokenizer::iterator end,
             int verbosity);
    int getVerbosity(tokenizer::iterator token, const tokenizer::iterator end,
                     int defaultVerbosity);
};

} // namespace logging
} // namespace pex
} // namespace lsst
#endif