Debug.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/>.
 */
 
#ifndef LSST_PEX_LOGGING_DEBUG_H
#define LSST_PEX_LOGGING_DEBUG_H

#include "lsst/pex/logging/Log.h"
#include <cstdarg>

namespace lsst {
namespace pex {
namespace logging {

#ifndef LSST_DEBUGGING_ON
#define LSST_DEBUGGING_ON
#endif

#ifdef LSST_NO_DEBUG
#undef LSST_DEBUGGING_ON
#undef LSST_MAX_DEBUG
#endif

#ifndef LSST_DEBUGGING_ON
#ifndef LSST_MAX_DEBUG
#define LSST_MAX_DEBUG 0
#endif
#endif

#ifndef LSST_MAX_DEBUG
#define LSST_MAX_DEBUG 0
#endif

class Debug : public Log {
public:

    Debug(const std::string& name, int verbosity=-1*Log::INHERIT_THRESHOLD) 
        : Log(Log::getDefaultLog(), name, -1*verbosity) { }

    Debug(const Log& parent, const std::string& name, 
          int verbosity=-1*Log::INHERIT_THRESHOLD) 
        : Log(parent, name , -1*verbosity) { }
    Debug(const Debug& that) : Log(that) { }

    Debug& operator=(const Debug& that) {
        if (this != &that) dynamic_cast<Log*>(this)->operator=(that);
        return *this;
    }

    void debug(int verbosity, const std::string& message) {
        log(-1*verbosity, message);
    }

    void debug(int verbosity, const boost::format& message) {
        log(-1*verbosity, message);
    }

    void debug(int verbosity, const char *fmt, ...) {
        va_list ap;
        va_start(ap, fmt);
        debug(verbosity, fmt, ap);
        va_end(ap);
    }

    void debug(int verbosity, const char *fmt, va_list ap) {
        if (-1 * verbosity < getThreshold()) return;
        _format(-1*verbosity, fmt, ap);
    }

    template<int VERBOSITY>
    void debug(const std::string& message) {
        if (LSST_MAX_DEBUG <= 0 || VERBOSITY <= LSST_MAX_DEBUG) {
            log(-1*VERBOSITY, message);
        }
    }

    template<int VERBOSITY>
    void debug(const char *fmt, ...) {
        if (LSST_MAX_DEBUG <= 0 || VERBOSITY <= LSST_MAX_DEBUG) {
            va_list ap;
            va_start(ap, fmt);
            debug(VERBOSITY, fmt, ap);
            va_end(ap);
        }
    }

};

template <int VERBOSITY>
void debug(const std::string& name, const std::string& message) {
    if (LSST_MAX_DEBUG <= 0 || VERBOSITY <= LSST_MAX_DEBUG) {
        Debug(name).debug<VERBOSITY>(message);
    }
}

template <int VERBOSITY>
void debug(const std::string& name, const char *fmt, ...) {
    if (LSST_MAX_DEBUG <= 0 || VERBOSITY <= LSST_MAX_DEBUG) {
        va_list ap;
        va_start(ap, fmt);
        Debug(name).debug(VERBOSITY, fmt, ap);
        va_end(ap);
    }
}


}}}     // end lsst::pex::logging

#endif  // end LSST_PEX_LOGGING_DEBUG_H