| /_____||_| |_| |_| |
| |
\---------------------------------------------------------------------*/
-/** \file zypp/sat/.h
+/** \file zypp/sat/WhatProvides.h
*
*/
#ifndef ZYPP_SAT_WHATPROVIDES_H
#define ZYPP_SAT_WHATPROVIDES_H
#include <iosfwd>
+#include <vector>
-#include "zypp/base/DefaultIntegral.h"
+#include "zypp/base/PtrTypes.h"
#include "zypp/sat/detail/PoolMember.h"
#include "zypp/sat/Solvable.h"
+#include "zypp/sat/SolvIterMixin.h"
///////////////////////////////////////////////////////////////////
namespace zypp
{ /////////////////////////////////////////////////////////////////
-///////////////////////////////////////////////////////////////////
-namespace sat
-{ /////////////////////////////////////////////////////////////////
-
- ///////////////////////////////////////////////////////////////////
- //
- // CLASS NAME : WhatProvides
- //
- /** Container of \ref Solvable providing a \ref Capability (read only).
- * \code
- * Capability cap("amarok < 1.13");
- * WhatProvides q( cap );
- * if ( ! q.empty() )
- * {
- * cout << "Found " << q.size() << " matches for " << cap << ":" << endl;
- * for_( it, q.begin(), q.end() )
- * cout << *it << end;
- * }
- * \endcode
- */
- class WhatProvides : protected detail::PoolMember
- {
- public:
- typedef Solvable value_type;
- typedef unsigned size_type;
-
- public:
- /** Default ctor */
- WhatProvides()
- : _begin( 0 )
- {}
-
- /** Ctor from Id pointer (friend \ref Solvable). */
- explicit
- WhatProvides( Capability cap_r );
-
- public:
- /** Whether the container is empty. */
- bool empty() const
- { return ! ( _begin && *_begin ); }
-
- /** Number of solvables inside. */
- size_type size() const;
-
- public:
- class const_iterator;
-
- /** Iterator pointing to the first \ref Solvable. */
- const_iterator begin() const;
-
- /** Iterator pointing behind the last \ref Solvable. */
- const_iterator end() const;
-
- private:
- const sat::detail::IdType * _begin;
- };
- ///////////////////////////////////////////////////////////////////
-
- /** \relates WhatProvides Stream output */
- std::ostream & operator<<( std::ostream & str, const WhatProvides & obj );
-
///////////////////////////////////////////////////////////////////
- //
- // CLASS NAME : WhatProvides::const_iterator
- //
- /** \ref WhatProvides iterator.
- */
- class WhatProvides::const_iterator : public boost::iterator_adaptor<
- const_iterator // Derived
- , const detail::IdType * // Base
- , const Solvable // Value
- , boost::forward_traversal_tag // CategoryOrTraversal
- , const Solvable // Reference
- >
- {
- public:
- const_iterator()
- : const_iterator::iterator_adaptor_( 0 )
- {}
-
- explicit const_iterator( const sat::detail::IdType * _idx )
- : const_iterator::iterator_adaptor_( _idx )
- {}
-
- private:
- friend class boost::iterator_core_access;
-
- reference dereference() const
- { return ( base() ) ? Solvable( *base() ) : Solvable::nosolvable; }
-
- template <class OtherDerived, class OtherIterator, class V, class C, class R, class D>
- bool equal( const boost::iterator_adaptor<OtherDerived, OtherIterator, V, C, R, D> & rhs ) const
- { // NULL pointer is eqal pointer to Id 0
- return ( base() == rhs.base() // includes both NULL...
- || ( !rhs.base() && !*base() )
- || ( !base() && !*rhs.base() ) );
- }
-
- void increment()
- { ++base_reference(); }
- };
+ namespace sat
+ { /////////////////////////////////////////////////////////////////
+
+ namespace detail
+ {
+ class WhatProvidesIterator;
+ }
+
+ ///////////////////////////////////////////////////////////////////
+ //
+ // CLASS NAME : WhatProvides
+ //
+ /** Container of \ref Solvable providing a \ref Capability (read only).
+ *
+ * \code
+ * Capability cap("amarok < 1.13");
+ *
+ * WhatProvides q( cap );
+ * Solvable firstMatch;
+ *
+ * if ( ! q.empty() )
+ * {
+ * cout << "Found " << q.size() << " matches for " << cap << ":" << endl;
+ * firstMatch = *q.begin();
+ *
+ * for_( it, q.begin(), q.end() )
+ * cout << *it << endl;
+ * }
+ *
+ * if ( firstMatch )
+ * {
+ * WhatProvides req( firstMatch.requires() );
+ * if ( ! req.empty() )
+ * {
+ * cout << "Found " << req.size() << " items providing requirements of " << firstMatch << ":" << endl;
+ * }
+ * }
+ * \endcode
+ *
+ * \note Note that there are capabilities which are not provided by any \ref Solvable,
+ * but are system properties. For example:
+ * \code
+ * rpmlib(PayloadIsBzip2) <= 3.0.5-1
+ * \endcode
+ * In that case a \ref Solvable::noSolvable is returned, which has \c isSystem set \c true, although
+ * there should never be a \ref Solvable::noSolvable returned with \c isSystem set \c false. If so,
+ * please file a bugreport.
+ * \code
+ * WhatProvides q( Capability("rpmlib(PayloadIsBzip2) <= 3.0.5-1") );
+ * for_( it, q.begin(), q.end() )
+ * {
+ * if ( *it )
+ * cout << "Capability is provided by package " << *it << endl;
+ * else if ( it->isSystem() )
+ * cout << "Capability is a system property" << endl;
+ * else
+ * ; // never reaching this \c else
+ * }
+ * \endcode
+ */
+ class WhatProvides : public SolvIterMixin<WhatProvides,detail::WhatProvidesIterator>,
+ protected detail::PoolMember
+ {
+ public:
+ typedef Solvable value_type;
+ typedef unsigned size_type;
+
+ public:
+ /** Default ctor */
+ WhatProvides()
+ : _begin( 0 )
+ {}
+
+ /** Ctor from \ref Capability. */
+ explicit
+ WhatProvides( Capability cap_r );
+
+ /** Ctor collecting all providers of capabilities in \c caps_r. */
+ explicit
+ WhatProvides( Capabilities caps_r );
+
+ /** Ctor collecting all providers of capabilities in \c caps_r. */
+ explicit
+ WhatProvides( const CapabilitySet & caps_r );
+
+ public:
+ /** Whether the container is empty. */
+ bool empty() const
+ { return ! ( _begin && *_begin ); }
+
+ /** Number of solvables inside. */
+ size_type size() const;
+
+ public:
+ typedef detail::WhatProvidesIterator const_iterator;
+
+ /** Iterator pointing to the first \ref Solvable. */
+ const_iterator begin() const;
+
+ /** Iterator pointing behind the last \ref Solvable. */
+ const_iterator end() const;
+
+ private:
+ const sat::detail::IdType * _begin;
+ shared_ptr<void> _private;
+ };
+ ///////////////////////////////////////////////////////////////////
+
+ /** \relates WhatProvides Stream output */
+ std::ostream & operator<<( std::ostream & str, const WhatProvides & obj );
+
+ namespace detail
+ {
+ ///////////////////////////////////////////////////////////////////
+ //
+ // CLASS NAME : WhatProvides::const_iterator
+ //
+ /** \ref WhatProvides iterator.
+ * Iterate a NULL terminated sat::detail::IdType array.
+ */
+ class WhatProvidesIterator : public boost::iterator_adaptor<
+ WhatProvidesIterator // Derived
+ , const detail::IdType * // Base
+ , const Solvable // Value
+ , boost::forward_traversal_tag // CategoryOrTraversal
+ , const Solvable // Reference
+ >
+ {
+ public:
+ WhatProvidesIterator()
+ : iterator_adaptor_( 0 )
+ {}
+
+ explicit WhatProvidesIterator( const sat::detail::IdType * _idx )
+ : iterator_adaptor_( _idx )
+ {}
+
+ private:
+ friend class boost::iterator_core_access;
+
+ reference dereference() const
+ { return ( base() ) ? Solvable( *base() ) : Solvable::noSolvable; }
+
+ template <class OtherDerived, class OtherIterator, class V, class C, class R, class D>
+ bool equal( const boost::iterator_adaptor<OtherDerived, OtherIterator, V, C, R, D> & rhs ) const
+ { // NULL pointer is eqal pointer to Id 0
+ return ( base() == rhs.base() // includes both NULL...
+ || ( !rhs.base() && !*base() )
+ || ( !base() && !*rhs.base() ) );
+ }
+
+ void increment()
+ { ++base_reference(); }
+ };
+ ///////////////////////////////////////////////////////////////////
+ }
+
+ inline WhatProvides::const_iterator WhatProvides::begin() const
+ { return const_iterator( _begin ); }
+
+ inline WhatProvides::const_iterator WhatProvides::end() const
+ { return const_iterator( 0 ); }
+
+ /////////////////////////////////////////////////////////////////
+ } // namespace sat
///////////////////////////////////////////////////////////////////
-
- inline WhatProvides::const_iterator WhatProvides::begin() const
- { return const_iterator( _begin ); }
-
- inline WhatProvides::const_iterator WhatProvides::end() const
- { return const_iterator( 0 ); }
-
- /////////////////////////////////////////////////////////////////
-} // namespace sat
-///////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////
} // namespace zypp
///////////////////////////////////////////////////////////////////
projects / platform / upstream / libzypp.git / blobdiff