1 /*---------------------------------------------------------------------\
3 | |__ / \ / / . \ . \ |
8 \---------------------------------------------------------------------*/
9 /** \file zypp/base/LogTools.h
12 #ifndef ZYPP_BASE_LOGTOOLS_H
13 #define ZYPP_BASE_LOGTOOLS_H
22 #include "zypp/base/Hash.h"
23 #include "zypp/base/Logger.h"
24 #include "zypp/base/Iterator.h"
25 #include "zypp/APIConfig.h"
27 ///////////////////////////////////////////////////////////////////
29 { /////////////////////////////////////////////////////////////////
33 /** Print range defined by iterators (multiline style).
35 * intro [ pfx ITEM [ { sep ITEM }+ ] sfx ] extro
38 * The defaults print the range enclosed in \c {}, one item per
39 * line indented by 2 spaces.
45 * {} // on empty range
48 * A comma separated list enclosed in \c () would be:
50 * dumpRange( stream, begin, end, "(", "", ", ", "", ")" );
52 * dumpRangeLine( stream, begin, end );
55 * \note Some special handling is required for printing std::maps.
56 * Therefore iomaipulators \ref dumpMap, \ref dumpKeys and \ref dumpValues
59 * std::map<string,int> m;
64 * dumpRange( DBG, dumpMap(m).begin(), dumpMap(m).end() ) << endl;
70 * dumpRange( DBG, dumpKeys(m).begin(), dumpKeys(m).end() ) << endl;
76 * dumpRange( DBG, dumpValues(m).begin(), dumpValues(m).end() ) << endl;
82 * dumpRangeLine( DBG, dumpMap(m).begin(), dumpMap(m).end() ) << endl;
83 * // ([a] = 1, [b] = 2, [c] = 3)
84 * dumpRangeLine( DBG, dumpKeys(m).begin(), dumpKeys(m).end() ) << endl;
86 * dumpRangeLine( DBG, dumpValues(m).begin(), dumpValues(m).end() ) << endl;
90 template<class TIterator>
91 std::ostream & dumpRange( std::ostream & str,
92 TIterator begin, TIterator end,
93 const std::string & intro = "{",
94 const std::string & pfx = "\n ",
95 const std::string & sep = "\n ",
96 const std::string & sfx = "\n",
97 const std::string & extro = "}" )
102 str << pfx << *begin;
103 for ( ++begin; begin != end; ++begin )
104 str << sep << *begin;
110 /** Print range defined by iterators (single line style).
113 template<class TIterator>
114 std::ostream & dumpRangeLine( std::ostream & str,
115 TIterator begin, TIterator end )
116 { return dumpRange( str, begin, end, "(", "", ", ", "", ")" ); }
117 /** \overload for container */
118 template<class TContainer>
119 std::ostream & dumpRangeLine( std::ostream & str, const TContainer & cont )
120 { return dumpRangeLine( str, cont.begin(), cont.end() ); }
123 ///////////////////////////////////////////////////////////////////
126 ///////////////////////////////////////////////////////////////////
127 /// \class RangeLine<TIterator>
128 /// \brief Iomanip helper printing dumpRangeLine style
129 ///////////////////////////////////////////////////////////////////
130 template<class TIterator>
133 RangeLine( TIterator begin, TIterator end )
141 /** \relates RangeLine<TIterator> */
142 template<class TIterator>
143 std::ostream & operator<<( std::ostream & str, const RangeLine<TIterator> & obj )
144 { return dumpRangeLine( str, obj._begin, obj._end ); }
146 } // namespce iomanip
147 ///////////////////////////////////////////////////////////////////
149 /** Iomanip printing dumpRangeLine style
151 * std::vector<int> c( { 1, 1, 2, 3, 5, 8 } );
152 * std::cout << rangeLine(c) << std::endl;
153 * -> (1, 1, 2, 3, 5, 8)
156 template<class TIterator>
157 iomanip::RangeLine<TIterator> rangeLine( TIterator begin, TIterator end )
158 { return iomanip::RangeLine<TIterator>( begin, end ); }
159 /** \overload for container */
160 template<class TContainer>
161 auto rangeLine( const TContainer & cont ) -> decltype( rangeLine( cont.begin(), cont.end() ) )
162 { return rangeLine( cont.begin(), cont.end() ); }
165 std::ostream & operator<<( std::ostream & str, const std::vector<Tp> & obj )
166 { return dumpRange( str, obj.begin(), obj.end() ); }
168 template<class Tp, class TCmp, class TAlloc>
169 std::ostream & operator<<( std::ostream & str, const std::set<Tp,TCmp,TAlloc> & obj )
170 { return dumpRange( str, obj.begin(), obj.end() ); }
173 std::ostream & operator<<( std::ostream & str, const std::unordered_set<Tp> & obj )
174 { return dumpRange( str, obj.begin(), obj.end() ); }
177 std::ostream & operator<<( std::ostream & str, const std::multiset<Tp> & obj )
178 { return dumpRange( str, obj.begin(), obj.end() ); }
181 std::ostream & operator<<( std::ostream & str, const std::list<Tp> & obj )
182 { return dumpRange( str, obj.begin(), obj.end() ); }
184 ///////////////////////////////////////////////////////////////////
185 namespace _logtoolsdetail
186 { /////////////////////////////////////////////////////////////////
188 ///////////////////////////////////////////////////////////////////
190 ///////////////////////////////////////////////////////////////////
192 /** std::pair wrapper for std::map output.
193 * Just because we want a special output format for std::pair
194 * used in a std::map. The mapped std::pair is printed as
195 * <tt>[key] = value</tt>.
197 template<class TPair>
201 MapEntry( const TPair & pair_r )
205 const TPair & pair() const
209 const TPair *const _pair;
212 /** \relates MapEntry Stream output. */
213 template<class TPair>
214 std::ostream & operator<<( std::ostream & str, const MapEntry<TPair> & obj )
216 return str << '[' << obj.pair().first << "] = " << obj.pair().second;
219 /** \relates MapEntry Convenience function to create MapEntry from std::pair. */
220 template<class TPair>
221 MapEntry<TPair> mapEntry( const TPair & pair_r )
222 { return MapEntry<TPair>( pair_r ); }
224 ///////////////////////////////////////////////////////////////////
226 ///////////////////////////////////////////////////////////////////
228 /** std::map wrapper for stream output.
229 * Uses a transform_iterator to wrap the std::pair into MapEntry.
236 typedef TMap MapType;
237 typedef typename TMap::value_type PairType;
238 typedef MapEntry<PairType> MapEntryType;
240 struct Transformer : public std::unary_function<PairType, MapEntryType>
242 MapEntryType operator()( const PairType & pair_r ) const
243 { return mapEntry( pair_r ); }
246 typedef transform_iterator<Transformer, typename MapType::const_iterator>
247 MapEntry_const_iterator;
250 DumpMap( const TMap & map_r )
254 const TMap & map() const
257 MapEntry_const_iterator begin() const
258 { return make_transform_iterator( map().begin(), Transformer() ); }
260 MapEntry_const_iterator end() const
261 { return make_transform_iterator( map().end(), Transformer() );}
264 const TMap *const _map;
267 /** \relates DumpMap Stream output. */
269 std::ostream & operator<<( std::ostream & str, const DumpMap<TMap> & obj )
270 { return dumpRange( str, obj.begin(), obj.end() ); }
272 /** \relates DumpMap Convenience function to create DumpMap from std::map. */
274 DumpMap<TMap> dumpMap( const TMap & map_r )
275 { return DumpMap<TMap>( map_r ); }
277 ///////////////////////////////////////////////////////////////////
279 ///////////////////////////////////////////////////////////////////
281 /** std::map wrapper for stream output of keys.
282 * Uses MapKVIterator iterate and write the key values.
284 * std::map<...> mymap;
285 * std::cout << dumpKeys(mymap) << std::endl;
292 typedef typename MapKVIteratorTraits<TMap>::Key_const_iterator MapKey_const_iterator;
295 DumpKeys( const TMap & map_r )
299 const TMap & map() const
302 MapKey_const_iterator begin() const
303 { return make_map_key_begin( map() ); }
305 MapKey_const_iterator end() const
306 { return make_map_key_end( map() ); }
309 const TMap *const _map;
312 /** \relates DumpKeys Stream output. */
314 std::ostream & operator<<( std::ostream & str, const DumpKeys<TMap> & obj )
315 { return dumpRange( str, obj.begin(), obj.end() ); }
317 /** \relates DumpKeys Convenience function to create DumpKeys from std::map. */
319 DumpKeys<TMap> dumpKeys( const TMap & map_r )
320 { return DumpKeys<TMap>( map_r ); }
322 ///////////////////////////////////////////////////////////////////
324 ///////////////////////////////////////////////////////////////////
326 /** std::map wrapper for stream output of values.
327 * Uses MapKVIterator iterate and write the values.
329 * std::map<...> mymap;
330 * std::cout << dumpValues(mymap) << std::endl;
337 typedef typename MapKVIteratorTraits<TMap>::Value_const_iterator MapValue_const_iterator;
340 DumpValues( const TMap & map_r )
344 const TMap & map() const
347 MapValue_const_iterator begin() const
348 { return make_map_value_begin( map() ); }
350 MapValue_const_iterator end() const
351 { return make_map_value_end( map() ); }
354 const TMap *const _map;
357 /** \relates DumpValues Stream output. */
359 std::ostream & operator<<( std::ostream & str, const DumpValues<TMap> & obj )
360 { return dumpRange( str, obj.begin(), obj.end() ); }
362 /** \relates DumpValues Convenience function to create DumpValues from std::map. */
364 DumpValues<TMap> dumpValues( const TMap & map_r )
365 { return DumpValues<TMap>( map_r ); }
367 /////////////////////////////////////////////////////////////////
368 } // namespace _logtoolsdetail
369 ///////////////////////////////////////////////////////////////////
372 using _logtoolsdetail::mapEntry; // std::pair as '[key] = value'
373 using _logtoolsdetail::dumpMap; // dumpRange '[key] = value'
374 using _logtoolsdetail::dumpKeys; // dumpRange keys
375 using _logtoolsdetail::dumpValues; // dumpRange values
377 template<class TKey, class Tp>
378 std::ostream & operator<<( std::ostream & str, const std::map<TKey, Tp> & obj )
379 { return str << dumpMap( obj ); }
381 template<class TKey, class Tp>
382 std::ostream & operator<<( std::ostream & str, const std::unordered_map<TKey, Tp> & obj )
383 { return str << dumpMap( obj ); }
385 template<class TKey, class Tp>
386 std::ostream & operator<<( std::ostream & str, const std::multimap<TKey, Tp> & obj )
387 { return str << dumpMap( obj ); }
389 /** Print stream status bits.
390 * Prints the values of a streams \c good, \c eof, \c failed and \c bad bit.
394 * [_eF_] - eof and fail bit set
395 * [__FB] - fail and bad bit set
398 inline std::ostream & operator<<( std::ostream & str, const std::basic_ios<char> & obj )
400 std::string ret( "[" );
401 ret += ( obj.good() ? 'g' : '_' );
402 ret += ( obj.eof() ? 'e' : '_' );
403 ret += ( obj.fail() ? 'F' : '_' );
404 ret += ( obj.bad() ? 'B' : '_' );
409 ///////////////////////////////////////////////////////////////////
410 // iomanipulator: str << dump(val) << ...
411 // calls: std::ostream & dumpOn( std::ostream & str, const Type & obj )
412 ///////////////////////////////////////////////////////////////////
419 Dump( const Tp & obj_r ) : _obj( obj_r ) {}
424 std::ostream & operator<<( std::ostream & str, const Dump<Tp> & obj )
425 { return dumpOn( str, obj._obj ); }
429 detail::Dump<Tp> dump( const Tp & obj_r )
430 { return detail::Dump<Tp>(obj_r); }
433 /////////////////////////////////////////////////////////////////
435 ///////////////////////////////////////////////////////////////////
436 #endif // ZYPP_BASE_LOGTOOLS_H