LoopCo.h

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#ifndef LOOP_CO_H
#define LOOP_CO_H

#include "y2storage/Container.h"
#include "y2storage/Loop.h"

class LoopCo : public Container
    {
    friend class Storage;

    public:
        LoopCo( Storage * const s, bool detect );
        LoopCo( const LoopCo& rhs );

        virtual ~LoopCo();
        static storage::CType const staticType() { return storage::LOOP; }
        friend std::ostream& operator<< (std::ostream&, const LoopCo& );

        int createLoop( const string& file, bool reuseExisting, 
                        unsigned long long sizeK, string& device );
        int removeLoop( const string& file, bool removeFile = false );

        int removeVolume( Volume* v );
        bool equalContent( const LoopCo& rhs ) const;
        void logDifference( const LoopCo& d ) const;
        
    protected:
        // iterators over LOOP volumes
        // protected typedefs for iterators over LOOP volumes
        typedef CastIterator<VIter, Loop *> LoopInter;
        typedef CastIterator<CVIter, const Loop *> LoopCInter;
        template< class Pred >
            struct LoopPI { typedef ContainerIter<Pred, LoopInter> type; };
        template< class Pred >
            struct LoopCPI { typedef ContainerIter<Pred, LoopCInter> type; };
        typedef CheckFnc<const Loop> CheckFncLoop;
        typedef CheckerIterator< CheckFncLoop, LoopPI<CheckFncLoop>::type,
                                 LoopInter, Loop > LoopPIterator;
        typedef CheckerIterator< CheckFncLoop, LoopCPI<CheckFncLoop>::type,
                                 LoopCInter, const Loop > LoopCPIterator;
        typedef DerefIterator<LoopPIterator,Loop> LoopIter;
        typedef DerefIterator<LoopCPIterator,const Loop> ConstLoopIter;
        typedef IterPair<LoopIter> LoopPair;
        typedef IterPair<ConstLoopIter> ConstLoopPair;

        LoopPair loopPair( bool (* Check)( const Loop& )=NULL)
            {
            return( LoopPair( loopBegin( Check ), loopEnd( Check ) ));
            }
        LoopIter loopBegin( bool (* Check)( const Loop& )=NULL)
            {
            IterPair<LoopInter> p( (LoopInter(begin())), (LoopInter(end())) );
            return( LoopIter( LoopPIterator( p, Check )) );
            }
        LoopIter loopEnd( bool (* Check)( const Loop& )=NULL)
            {
            IterPair<LoopInter> p( (LoopInter(begin())), (LoopInter(end())) );
            return( LoopIter( LoopPIterator( p, Check, true )) );
            }

        ConstLoopPair loopPair( bool (* Check)( const Loop& )=NULL) const
            {
            return( ConstLoopPair( loopBegin( Check ), loopEnd( Check ) ));
            }
        ConstLoopIter loopBegin( bool (* Check)( const Loop& )=NULL) const
            {
            IterPair<LoopCInter> p( (LoopCInter(begin())), (LoopCInter(end())) );
            return( ConstLoopIter( LoopCPIterator( p, Check )) );
            }
        ConstLoopIter loopEnd( bool (* Check)( const Loop& )=NULL) const
            {
            IterPair<LoopCInter> p( (LoopCInter(begin())), (LoopCInter(end())) );
            return( ConstLoopIter( LoopCPIterator( p, Check, true )) );
            }

        LoopCo( Storage * const s, const string& File );

        void getLoopData();
        bool findLoop( unsigned num, LoopIter& i );
        bool findLoop( unsigned num ); 
        bool findLoop( const string& dev, LoopIter& i );
        bool findLoop( const string& dev ); 
        void addLoop( Loop* m );
        void checkLoop( Loop* m );
        void updateEntry( const Loop* m );
        static int getFreeLoop( string& dev );

        void init();

        virtual void print( std::ostream& s ) const { s << *this; }
        virtual Container* getCopy() const { return( new LoopCo( *this ) ); }

        int doCreate( Volume* v );
        int doRemove( Volume* v );

        void logData( const string& Dir );
    };

#endif

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