[1409] | 1 | /* -*- C++ -*- |
---|
| 2 | * |
---|
[1956] | 3 | * This file is a part of LEMON, a generic C++ optimization library |
---|
| 4 | * |
---|
| 5 | * Copyright (C) 2003-2006 |
---|
| 6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
---|
| 7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
---|
[1409] | 8 | * |
---|
| 9 | * Permission to use, modify and distribute this software is granted |
---|
| 10 | * provided that this copyright notice appears in all copies. For |
---|
| 11 | * precise terms see the accompanying LICENSE file. |
---|
| 12 | * |
---|
| 13 | * This software is provided "AS IS" with no warranty of any kind, |
---|
| 14 | * express or implied, and with no claim as to its suitability for any |
---|
| 15 | * purpose. |
---|
| 16 | * |
---|
| 17 | */ |
---|
| 18 | |
---|
[1946] | 19 | /// \ingroup item_io |
---|
[1409] | 20 | /// \file |
---|
| 21 | /// \brief Item writer bits for lemon output. |
---|
| 22 | |
---|
| 23 | #ifndef LEMON_BITS_ITEM_WRITER_H |
---|
| 24 | #define LEMON_BITS_ITEM_WRITER_H |
---|
| 25 | |
---|
| 26 | #include <iostream> |
---|
| 27 | #include <string> |
---|
| 28 | |
---|
| 29 | #include <vector> |
---|
| 30 | #include <deque> |
---|
| 31 | #include <list> |
---|
| 32 | #include <set> |
---|
| 33 | |
---|
| 34 | namespace lemon { |
---|
| 35 | |
---|
| 36 | template <typename Value> |
---|
| 37 | class DefaultWriter; |
---|
| 38 | |
---|
[1946] | 39 | /// \ingroup item_io |
---|
[1409] | 40 | /// \brief Writer class for quoted strings. |
---|
| 41 | /// |
---|
| 42 | /// Writer class for quoted strings. It can process the escape |
---|
| 43 | /// sequences in the string. |
---|
| 44 | /// \author Balazs Dezso |
---|
| 45 | class QuotedStringWriter { |
---|
| 46 | public: |
---|
| 47 | typedef std::string Value; |
---|
| 48 | |
---|
| 49 | /// \brief Constructor for the writer. |
---|
| 50 | /// |
---|
| 51 | /// Constructor for the writer. If the given parameter is true |
---|
| 52 | /// the writer creates escape sequences from special characters. |
---|
| 53 | QuotedStringWriter(bool _escaped = true) : escaped(_escaped) {} |
---|
| 54 | |
---|
| 55 | /// \brief Writes a quoted string to the given stream. |
---|
| 56 | /// |
---|
| 57 | /// Writes a quoted string to the given stream. |
---|
[1852] | 58 | void write(std::ostream& os, const std::string& value) const { |
---|
[1409] | 59 | os << "\""; |
---|
| 60 | if (escaped) { |
---|
[1535] | 61 | std::ostringstream ls; |
---|
[1409] | 62 | for (int i = 0; i < (int)value.size(); ++i) { |
---|
| 63 | writeEscape(ls, value[i]); |
---|
| 64 | } |
---|
| 65 | os << ls.str(); |
---|
| 66 | } else { |
---|
| 67 | os << value; |
---|
| 68 | } |
---|
| 69 | os << "\""; |
---|
| 70 | } |
---|
| 71 | |
---|
| 72 | private: |
---|
| 73 | |
---|
| 74 | static void writeEscape(std::ostream& os, char c) { |
---|
| 75 | switch (c) { |
---|
| 76 | case '\\': |
---|
| 77 | os << "\\\\"; |
---|
| 78 | return; |
---|
| 79 | case '\"': |
---|
| 80 | os << "\\\""; |
---|
| 81 | return; |
---|
| 82 | case '\'': |
---|
| 83 | os << "\\\'"; |
---|
| 84 | return; |
---|
| 85 | case '\?': |
---|
| 86 | os << "\\\?"; |
---|
| 87 | return; |
---|
| 88 | case '\a': |
---|
| 89 | os << "\\a"; |
---|
| 90 | return; |
---|
| 91 | case '\b': |
---|
| 92 | os << "\\b"; |
---|
| 93 | return; |
---|
| 94 | case '\f': |
---|
| 95 | os << "\\f"; |
---|
| 96 | return; |
---|
| 97 | case '\r': |
---|
| 98 | os << "\\r"; |
---|
| 99 | return; |
---|
| 100 | case '\n': |
---|
| 101 | os << "\\n"; |
---|
| 102 | return; |
---|
| 103 | case '\t': |
---|
| 104 | os << "\\t"; |
---|
| 105 | return; |
---|
| 106 | case '\v': |
---|
| 107 | os << "\\v"; |
---|
| 108 | return; |
---|
| 109 | default: |
---|
| 110 | if (c < 0x20) { |
---|
| 111 | os << '\\' << std::oct << (int)c; |
---|
| 112 | } else { |
---|
| 113 | os << c; |
---|
| 114 | } |
---|
| 115 | return; |
---|
| 116 | } |
---|
| 117 | } |
---|
| 118 | private: |
---|
| 119 | bool escaped; |
---|
| 120 | }; |
---|
| 121 | |
---|
[1946] | 122 | /// \ingroup item_io |
---|
[1533] | 123 | /// \brief Writer class for quoted char array. |
---|
| 124 | /// |
---|
| 125 | /// Writer class for quoted char array. It can process the escape |
---|
| 126 | /// sequences in the char array. |
---|
| 127 | /// \author Balazs Dezso |
---|
| 128 | class QuotedCharArrayWriter { |
---|
| 129 | public: |
---|
| 130 | typedef const char* Value; |
---|
| 131 | |
---|
| 132 | /// \brief Constructor for the writer. |
---|
| 133 | /// |
---|
| 134 | /// Constructor for the writer. If the given parameter is true |
---|
| 135 | /// the writer creates escape sequences from special characters. |
---|
| 136 | QuotedCharArrayWriter(bool _escaped = true) : escaped(_escaped) {} |
---|
| 137 | |
---|
| 138 | /// \brief Writes a quoted char array to the given stream. |
---|
| 139 | /// |
---|
| 140 | /// Writes a quoted char array to the given stream. |
---|
[1852] | 141 | void write(std::ostream& os, const char* value) const { |
---|
[1533] | 142 | QuotedStringWriter(escaped).write(os, std::string(value)); |
---|
| 143 | } |
---|
| 144 | |
---|
| 145 | private: |
---|
| 146 | bool escaped; |
---|
| 147 | }; |
---|
| 148 | |
---|
| 149 | |
---|
[1946] | 150 | /// \ingroup item_io |
---|
[1409] | 151 | /// |
---|
| 152 | /// \brief Writer for standard containers. |
---|
| 153 | /// |
---|
| 154 | /// Writer for each iterable standard containers. The representation |
---|
| 155 | /// of the container is the values enumerated between an open and a |
---|
| 156 | /// close parse. |
---|
| 157 | /// |
---|
| 158 | /// \author Balazs Dezso |
---|
| 159 | template < |
---|
| 160 | typename _Container, |
---|
| 161 | typename _ItemWriter = DefaultWriter<typename _Container::value_type> |
---|
| 162 | > |
---|
| 163 | class IterableWriter { |
---|
| 164 | public: |
---|
| 165 | typedef _Container Value; |
---|
| 166 | typedef _ItemWriter ItemWriter; |
---|
| 167 | |
---|
| 168 | private: |
---|
| 169 | |
---|
| 170 | ItemWriter item_writer; |
---|
| 171 | |
---|
| 172 | public: |
---|
| 173 | |
---|
[1852] | 174 | IterableWriter(const ItemWriter& _item_writer = ItemWriter()) |
---|
| 175 | : item_writer(_item_writer) {} |
---|
| 176 | |
---|
[1409] | 177 | /// \brief Writes the values of the container to the given stream. |
---|
| 178 | /// |
---|
| 179 | /// Writes the values of the container to the given stream. |
---|
| 180 | void write(std::ostream& os, const Value& value) const { |
---|
| 181 | typename Value::const_iterator it; |
---|
| 182 | os << '('; |
---|
| 183 | for (it = value.begin(); it != value.end(); ++it) { |
---|
| 184 | item_writer.write(os, *it); |
---|
| 185 | os << ' '; |
---|
| 186 | } |
---|
| 187 | os << ')'; |
---|
| 188 | } |
---|
| 189 | |
---|
| 190 | }; |
---|
| 191 | |
---|
[1946] | 192 | /// \ingroup item_io |
---|
[1852] | 193 | /// |
---|
| 194 | /// \brief Writer for standard pairs. |
---|
| 195 | /// |
---|
| 196 | /// Writer for standard pairs. The representation of a pair is |
---|
[1946] | 197 | ///\code ( first_value => second_value ) \endcode. |
---|
[1852] | 198 | /// \author Balazs Dezso |
---|
| 199 | template <typename _Pair, |
---|
| 200 | typename _FirstWriter = |
---|
| 201 | DefaultWriter<typename _Pair::first_type>, |
---|
| 202 | typename _SecondWriter = |
---|
| 203 | DefaultWriter<typename _Pair::second_type> > |
---|
| 204 | class PairWriter { |
---|
| 205 | public: |
---|
| 206 | |
---|
| 207 | typedef _Pair Value; |
---|
| 208 | |
---|
| 209 | typedef _FirstWriter FirstWriter; |
---|
| 210 | typedef _SecondWriter SecondWriter; |
---|
| 211 | |
---|
| 212 | private: |
---|
| 213 | |
---|
| 214 | FirstWriter first_writer; |
---|
| 215 | SecondWriter second_writer; |
---|
| 216 | |
---|
| 217 | public: |
---|
| 218 | |
---|
| 219 | /// \brief Constructor. |
---|
| 220 | /// |
---|
| 221 | /// Constructor for the PairWriter. |
---|
| 222 | PairWriter(const FirstWriter& _first_writer = FirstWriter(), |
---|
| 223 | const SecondWriter& _second_writer = SecondWriter()) |
---|
| 224 | : first_writer(_first_writer), second_writer(_second_writer) {} |
---|
| 225 | |
---|
| 226 | /// \brief Writes the pair from the given stream. |
---|
| 227 | /// |
---|
| 228 | /// Writes the pair from the given stream. |
---|
| 229 | void write(std::ostream& os, const Value& value) const { |
---|
| 230 | os << "( "; |
---|
| 231 | first_writer.write(os, value.first); |
---|
| 232 | os << " => "; |
---|
| 233 | second_writer.write(os, value.second); |
---|
| 234 | os << " )"; |
---|
| 235 | } |
---|
| 236 | |
---|
| 237 | }; |
---|
| 238 | |
---|
[1946] | 239 | /// \ingroup item_io |
---|
[1409] | 240 | /// |
---|
| 241 | /// \brief The default item writer template class. |
---|
| 242 | /// |
---|
| 243 | /// The default item writer template class. If some section writer |
---|
| 244 | /// needs to write a value to the stream it will give the default way for it. |
---|
| 245 | /// |
---|
| 246 | /// \author Balazs Dezso |
---|
| 247 | template <typename _Value> |
---|
| 248 | class DefaultWriter { |
---|
| 249 | public: |
---|
| 250 | /// The value type. |
---|
| 251 | typedef _Value Value; |
---|
| 252 | /// \brief Writes the value to the given stream. |
---|
| 253 | /// |
---|
| 254 | /// Writes the value to the given stream. |
---|
| 255 | void write(std::ostream& os, const Value& value) const { |
---|
| 256 | os << value; |
---|
| 257 | } |
---|
| 258 | }; |
---|
| 259 | |
---|
[1429] | 260 | template <> |
---|
| 261 | class DefaultWriter<std::string> |
---|
[1434] | 262 | : public QuotedStringWriter {}; |
---|
[1429] | 263 | |
---|
[1533] | 264 | template <int length> |
---|
| 265 | class DefaultWriter<char[length]> |
---|
| 266 | : public QuotedCharArrayWriter {}; |
---|
| 267 | |
---|
| 268 | template <int length> |
---|
| 269 | class DefaultWriter<const char[length]> |
---|
| 270 | : public QuotedCharArrayWriter {}; |
---|
| 271 | |
---|
[1852] | 272 | template <> |
---|
| 273 | class DefaultWriter<char*> |
---|
| 274 | : public QuotedCharArrayWriter {}; |
---|
| 275 | |
---|
| 276 | template <> |
---|
| 277 | class DefaultWriter<const char*> |
---|
| 278 | : public QuotedCharArrayWriter {}; |
---|
| 279 | |
---|
[1409] | 280 | template <typename Item> |
---|
| 281 | class DefaultWriter<std::vector<Item> > |
---|
| 282 | : public IterableWriter<std::vector<Item> > {}; |
---|
| 283 | |
---|
| 284 | template <typename Item> |
---|
| 285 | class DefaultWriter<std::deque<Item> > |
---|
| 286 | : public IterableWriter<std::deque<Item> > {}; |
---|
| 287 | |
---|
| 288 | template <typename Item> |
---|
| 289 | class DefaultWriter<std::list<Item> > |
---|
| 290 | : public IterableWriter<std::list<Item> > {}; |
---|
| 291 | |
---|
| 292 | template <typename Item> |
---|
| 293 | class DefaultWriter<std::set<Item> > |
---|
| 294 | : public IterableWriter<std::set<Item> > {}; |
---|
| 295 | |
---|
[1852] | 296 | template <typename Key, typename Value> |
---|
| 297 | class DefaultWriter<std::map<Key, Value> > |
---|
| 298 | : public IterableWriter<std::map<Key, Value> > {}; |
---|
| 299 | |
---|
[1409] | 300 | template <typename Item> |
---|
| 301 | class DefaultWriter<std::multiset<Item> > |
---|
| 302 | : public IterableWriter<std::multiset<Item> > {}; |
---|
| 303 | |
---|
[1852] | 304 | template <typename Key, typename Value> |
---|
| 305 | class DefaultWriter<std::multimap<Key, Value> > |
---|
| 306 | : public IterableWriter<std::multimap<Key, Value> > {}; |
---|
| 307 | |
---|
| 308 | template <typename First, typename Second> |
---|
| 309 | class DefaultWriter<std::pair<First, Second> > |
---|
| 310 | : public PairWriter<std::pair<First, Second> > {}; |
---|
| 311 | |
---|
[1946] | 312 | /// \ingroup item_io |
---|
[1409] | 313 | /// \brief Standard WriterTraits for the section writers. |
---|
| 314 | /// |
---|
| 315 | /// Standard WriterTraits for the section writers. |
---|
| 316 | /// It defines standard writing method for all type of value. |
---|
| 317 | /// \author Balazs Dezso |
---|
| 318 | struct DefaultWriterTraits { |
---|
| 319 | |
---|
| 320 | template <typename _Value> |
---|
[1533] | 321 | struct Writer : DefaultWriter<_Value> { |
---|
| 322 | typedef DefaultWriter<_Value> Parent; |
---|
| 323 | }; |
---|
[1409] | 324 | |
---|
| 325 | }; |
---|
| 326 | |
---|
| 327 | } |
---|
| 328 | |
---|
| 329 | #endif |
---|