UrnPolicyFile.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_URNPOLICYFILE_H
#define LSST_PEX_POLICY_URNPOLICYFILE_H

#include "lsst/pex/policy/DefaultPolicyFile.h"

namespace lsst {
namespace pex {
namespace policy {

class UrnPolicyFile : public DefaultPolicyFile {
public:

    explicit UrnPolicyFile(const std::string& urn,
                           bool strictUrn=false, bool strictLoads=true)
        // TODO: oops, this is a segfault waiting to happen -- pass a string instead?
        : DefaultPolicyFile(productNameFromUrn(urn, strictUrn).c_str(),
                            filePathFromUrn(urn, strictUrn),
                            reposFromUrn(urn, strictUrn),
                            strictLoads),
        _urn(urn) {}

    static std::string productNameFromUrn(const std::string& urn,
                                          bool strictUrn=false);

    static std::string filePathFromUrn(const std::string& urn,
                                       bool strictUrn=false);

    static std::string reposFromUrn(const std::string& urn, 
                                    bool strictUrn=false);


    static const std::string URN_PREFIX; // "urn:eupspkg:";
    static const std::string URN_PREFIX_ABBREV; // "@";


    static bool looksLikeUrn(const std::string& s, bool strict=false);

private:
    const std::string _urn;
};

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

#endif // LSST_PEX_POLICY_URNPOLICYFILE_H