add sat::WhatProvides to look for Solvable providing a Capability. (somtimes segfaults).
[platform/upstream/libzypp.git] / zypp / sat / detail / PoolImpl.h
1 /*---------------------------------------------------------------------\
2 |                          ____ _   __ __ ___                          |
3 |                         |__  / \ / / . \ . \                         |
4 |                           / / \ V /|  _/  _/                         |
5 |                          / /__ | | | | | |                           |
6 |                         /_____||_| |_| |_|                           |
7 |                                                                      |
8 \---------------------------------------------------------------------*/
9 /** \file       zypp/sat/detail/PoolImpl.h
10  *
11 */
12 #ifndef ZYPP_SAT_DETAIL_POOLIMPL_H
13 #define ZYPP_SAT_DETAIL_POOLIMPL_H
14 extern "C"
15 {
16 #include <satsolver/pool.h>
17 #include <satsolver/repo.h>
18 #include <satsolver/solvable.h>
19 #include <satsolver/poolarch.h>
20 #include <satsolver/repo_solv.h>
21 }
22 #include <iosfwd>
23 #include <tr1/unordered_set>
24
25 #include "zypp/base/NonCopyable.h"
26 #include "zypp/base/SerialNumber.h"
27 #include "zypp/sat/detail/PoolMember.h"
28 #include "zypp/RepoInfo.h"
29 #include "zypp/Locale.h"
30 #include "zypp/Capability.h"
31 #include "zypp/IdString.h"
32
33 ///////////////////////////////////////////////////////////////////
34 namespace zypp
35 { /////////////////////////////////////////////////////////////////
36   ///////////////////////////////////////////////////////////////////
37   namespace sat
38   { /////////////////////////////////////////////////////////////////
39     ///////////////////////////////////////////////////////////////////
40     namespace detail
41     { /////////////////////////////////////////////////////////////////
42
43       ///////////////////////////////////////////////////////////////////
44       //
45       //        CLASS NAME : PoolImpl
46       //
47       /** */
48       class PoolImpl : private base::NonCopyable
49       {
50         public:
51           /** Default ctor */
52           PoolImpl();
53
54           /** Dtor */
55           ~PoolImpl();
56
57           /** Pointer style access forwarded to sat-pool. */
58           ::_Pool * operator->()
59           { return _pool; }
60
61         public:
62           /** Serial number changing whenever the content changes. */
63           const SerialNumber & serial() const
64           { return _serial; }
65
66           /** Update housekeeping data (e.g. whatprovides).
67            * \todo actually requires a watcher.
68            */
69           void prepare() const;
70
71         private:
72           /** Invalidate housekeeping data (e.g. whatprovides) if the
73            *  pools content changed.
74            */
75           void setDirty( const char * a1 = 0, const char * a2 = 0, const char * a3 = 0 );
76
77           /** Invalidate housekeeping data (e.g. whatprovides) if dependencies changed.
78            */
79           void depSetDirty( const char * a1 = 0, const char * a2 = 0, const char * a3 = 0 );
80
81           static detail::IdType nsCallback( ::_Pool *, void * data, detail::IdType lhs, detail::IdType rhs );
82
83         public:
84           /** \name Actions invalidating housekeeping data.
85            *
86            * All methods expect valid arguments being passed.
87            */
88           //@{
89           /** Creating a new repo named \a name_r. */
90           RepoIdType _createRepo( const std::string & name_r )
91           {
92             setDirty(__FUNCTION__, name_r.c_str() );
93             return ::repo_create( _pool, name_r.c_str() );
94           }
95
96           /** Creating a new repo named \a name_r. */
97           void _deleteRepo( ::_Repo * repo_r )
98           {
99             setDirty(__FUNCTION__, repo_r->name );
100             ::repo_free( repo_r, /*reuseids*/false );
101             eraseRepoInfo( repo_r );
102           }
103
104           /** Adding solv file to a repo. */
105           int _addSolv( ::_Repo * repo_r, FILE * file_r );
106
107           /** Adding Solvables to a repo. */
108           detail::SolvableIdType _addSolvables( ::_Repo * repo_r, unsigned count_r )
109           {
110             setDirty(__FUNCTION__, repo_r->name );
111             return ::repo_add_solvable_block( repo_r, count_r );
112           }
113           //@}
114
115         public:
116           /** a \c valid \ref Solvable has a non NULL repo pointer. */
117           bool validSolvable( const ::_Solvable & slv_r ) const
118           { return slv_r.repo; }
119           /** \overload Check also for id_r being in range of _pool->solvables. */
120           bool validSolvable( SolvableIdType id_r ) const
121           { return id_r < unsigned(_pool->nsolvables) && validSolvable( _pool->solvables[id_r] ); }
122           /** \overload Check also for slv_r being in range of _pool->solvables. */
123           bool validSolvable( const ::_Solvable * slv_r ) const
124           { return _pool->solvables <= slv_r && slv_r <= _pool->solvables+_pool->nsolvables && validSolvable( *slv_r ); }
125
126         public:
127           ::_Pool * getPool() const
128           { return _pool; }
129
130           /** \todo a quick check whether the repo was meanwhile deleted. */
131           ::_Repo * getRepo( RepoIdType id_r ) const
132           { return id_r; }
133
134           /** Return pointer to the sat-solvable or NULL if it is not valid.
135            * \see \ref validSolvable.
136            */
137           ::_Solvable * getSolvable( SolvableIdType id_r ) const
138           {
139             if ( validSolvable( id_r ) )
140               return &_pool->solvables[id_r];
141             return 0;
142           }
143
144         public:
145           /** Get id of the first valid \ref Solvable.
146            * This is the next valid after the system solvable.
147            */
148           SolvableIdType getFirstId()  const
149           { return getNextId( 1 ); }
150
151           /** Get id of the next valid \ref Solvable.
152            * This goes round robbin. At the end it returns \ref noSolvableId.
153            * Passing \ref noSolvableId it returns the 1st valid  \ref Solvable.
154            * \see \ref validSolvable.
155            */
156           SolvableIdType getNextId( SolvableIdType id_r ) const
157           {
158             for( ++id_r; id_r < unsigned(_pool->nsolvables); ++id_r )
159             {
160               if ( validSolvable( _pool->solvables[id_r] ) )
161                 return id_r;
162             }
163             return noSolvableId;
164           }
165
166         public:
167           /** */
168           const RepoInfo & repoInfo( RepoIdType id_r )
169           { return _repoinfos[id_r]; }
170           /** */
171           void setRepoInfo( RepoIdType id_r, const RepoInfo & info_r )
172           { _repoinfos[id_r] = info_r; }
173           /** */
174           void eraseRepoInfo( RepoIdType id_r )
175           { _repoinfos.erase( id_r ); }
176
177         public:
178           const sat::detail::IdType * whatProvides( Capability cap_r )
179           { prepare(); return ::pool_whatprovides( _pool, cap_r.id() ); }
180
181         public:
182           /** \name Requested locales. */
183           //@{
184           void setRequestedLocales( const LocaleSet & locales_r );
185           bool addRequestedLocale( const Locale & locale_r );
186           bool eraseRequestedLocale( const Locale & locale_r );
187
188           const LocaleSet & getRequestedLocales() const
189           { return _requestedLocales; }
190
191           bool isRequestedLocale( const Locale & locale_r ) const
192           {
193             LocaleSet::const_iterator it( _requestedLocales.find( locale_r ) );
194             return it != _requestedLocales.end();
195           }
196
197           const LocaleSet & getAvailableLocales() const;
198
199           bool isAvailableLocale( const Locale & locale_r ) const
200           {
201             const LocaleSet & avl( getAvailableLocales() );
202             LocaleSet::const_iterator it( avl.find( locale_r ) );
203             return it != avl.end();
204           }
205           //@}
206
207         private:
208           /** sat-pool. */
209           ::_Pool * _pool;
210           /** Serial number. */
211           SerialNumber _serial;
212           /** Watch serial number. */
213           SerialNumberWatcher _watcher;
214           /** Additional \ref RepoInfo. */
215           std::map<RepoIdType,RepoInfo> _repoinfos;
216
217           /**  */
218           LocaleSet _requestedLocales;
219           mutable scoped_ptr<LocaleSet> _availableLocalesPtr;
220           mutable std::tr1::unordered_set<IdString> _locale2Solver;
221       };
222       ///////////////////////////////////////////////////////////////////
223
224       /////////////////////////////////////////////////////////////////
225     } // namespace detail
226     ///////////////////////////////////////////////////////////////////
227     /////////////////////////////////////////////////////////////////
228   } // namespace sat
229   ///////////////////////////////////////////////////////////////////
230   /////////////////////////////////////////////////////////////////
231 } // namespace zypp
232 ///////////////////////////////////////////////////////////////////
233 #define POOL_SETDIRTY
234 #endif // ZYPP_SAT_DETAIL_POOLIMPL_H