PolicyWriter.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_POLICY_POLICYWRITER_H
#define LSST_PEX_POLICY_POLICYWRITER_H

#include "lsst/pex/policy/Policy.h"
#include <ostream>

#define NULL_FILENAME "/dev/null"

namespace lsst {
namespace pex {
namespace policy {

class PolicyWriter {
public: 

    PolicyWriter(std::ostream *out = 0);

    PolicyWriter(const std::string& file, bool append=false);

    virtual ~PolicyWriter();

    virtual void write(const Policy& policy, bool doDecl=false);


    virtual void writeBool(const std::string& name, bool value);
    virtual void writeInt(const std::string& name, int value);
    virtual void writeDouble(const std::string& name, double value);
    virtual void writeString(const std::string& name, 
                             const std::string& value);
    virtual void writePolicy(const std::string& name, const Policy& value);
    virtual void writeFile(const std::string& name, const PolicyFile& value);


    virtual void writeBools(const std::string& name, 
                            const Policy::BoolArray& values) = 0;
    virtual void writeInts(const std::string& name, 
                           const Policy::IntArray& values) = 0;
    virtual void writeDoubles(const std::string& name, 
                              const Policy::DoubleArray& values) = 0;
    virtual void writeStrings(const std::string& name, 
                              const Policy::StringArray& values) = 0;
    virtual void writePolicies(const std::string& name, 
                               const Policy::PolicyPtrArray& values) = 0;
    virtual void writeFiles(const std::string& name, 
                            const Policy::FilePtrArray& values) = 0;

    void close();

    std::string toString();
        

private:
    std::ostream *_myos;
protected:

    std::ostream *_os;
};




}}}  // end namespace lsst::pex::policy

#endif // LSST_PEX_POLICY_POLICYWRITER_H