source: source/ariba/Name.h@ 5748

// [License]
// The Ariba-Underlay Copyright
//
// Copyright (c) 2008-2009, Institute of Telematics, UniversitÀt Karlsruhe (TH)
//
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// UniversitÀt Karlsruhe (TH)
// Zirkel 2, 76128 Karlsruhe
// Germany
//
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// modification, are permitted provided that the following conditions are
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//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
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// [License]

#ifndef NAME_H_
#define NAME_H_

#include <iostream>
#include <memory.h>
#include <string>

using std::string;

// forward declaration
namespace ariba { class Name; }

std::ostream& operator<<( std::ostream&, const ariba::Name& );

#include "Identifiers.h"

namespace ariba {

/**
 * This class is a wrapper for canonical names.
 * Currently only human readable names are supported.
 *
 * @author Sebastian Mies <mies@tm.uka.de>
 */
class Name {
        friend std::ostream& operator<<( std::ostream&, const ::ariba::Name& );
public:
        static const Name UNSPECIFIED;

        /**
         * Constructs a new, yet unspecified name.
         */
        Name();

        /**
         * Constructs a new name. If no length is specified, a human-readable
         * name is assumed.
         *
         * @param name The name
         * @param len The optional name length, if binary data is used as name
         * @param copy A flag, whether the name's memory needs to be copied
         */
        Name(const char* name, int len = -1, bool copy = false);

        /**
         * Constructs a new name out of a human readable string.
         *
         * @param name A human readable name
         */
        Name(string name);

        /**
         * The copy constructor.
         */
        Name(const Name& name);

        /**
         * Destroys the name and releases underlying memory if this name is a copy.
         */
        virtual ~Name();

        /**
         * Returns the binary bytes of the name
         *
         * @return The binary data
         */
        const uint8_t* bytes() const;

        /**
         * Returns the length of the name in bytes.
         *
         * @return The length of the name
         */
        const size_t length() const;

        /**
         * The common assign operator
         */
        Name& operator=( const Name& name );

        /**
         * The common implementation of the "equal" operator.
         */
        bool operator==(const Name& name) const;

        /**
         * The common implementation of the "unequal" operator.
         */
        bool operator!=(const Name& name) const;

        /**
         * Returns true, if the name is yet unspecified
         */
        bool isUnspecified() const;

        /**
         * Returns a random name.
         */
        static Name random();

        /**
         * Returns a human-readable representation of this name
         */
        string toString() const;

        // hack: to be changed!
        NodeID toNodeId() const;

        // hack: to be changed!
        SpoVNetID toSpoVNetId() const;

private:
        bool _hreadable;
        bool _copy;
        int _length;
        uint8_t* _bytes;

        void init(const char* name, int len, bool copy, bool hreadable);
};

} // namespace ariba

#endif /* NAME_H_ */