[127] | 1 | /* -*- C++ -*- |
---|
| 2 | * |
---|
| 3 | * This file is a part of LEMON, a generic C++ optimization library |
---|
| 4 | * |
---|
| 5 | * Copyright (C) 2003-2008 |
---|
| 6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
---|
| 7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
---|
| 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 | |
---|
| 19 | ///\ingroup lemon_io |
---|
| 20 | ///\file |
---|
[192] | 21 | ///\brief \ref lgf-format "Lemon Graph Format" reader. |
---|
[127] | 22 | |
---|
| 23 | |
---|
| 24 | #ifndef LEMON_LGF_READER_H |
---|
| 25 | #define LEMON_LGF_READER_H |
---|
| 26 | |
---|
| 27 | #include <iostream> |
---|
| 28 | #include <fstream> |
---|
| 29 | #include <sstream> |
---|
| 30 | |
---|
| 31 | #include <set> |
---|
| 32 | #include <map> |
---|
| 33 | |
---|
| 34 | #include <lemon/assert.h> |
---|
| 35 | #include <lemon/graph_utils.h> |
---|
| 36 | |
---|
| 37 | #include <lemon/lgf_writer.h> |
---|
| 38 | |
---|
| 39 | #include <lemon/concept_check.h> |
---|
| 40 | #include <lemon/concepts/maps.h> |
---|
| 41 | |
---|
| 42 | namespace lemon { |
---|
| 43 | |
---|
| 44 | namespace _reader_bits { |
---|
| 45 | |
---|
| 46 | template <typename Value> |
---|
| 47 | struct DefaultConverter { |
---|
| 48 | Value operator()(const std::string& str) { |
---|
| 49 | std::istringstream is(str); |
---|
| 50 | Value value; |
---|
| 51 | is >> value; |
---|
| 52 | |
---|
| 53 | char c; |
---|
| 54 | if (is >> std::ws >> c) { |
---|
| 55 | throw DataFormatError("Remaining characters in token"); |
---|
| 56 | } |
---|
| 57 | return value; |
---|
| 58 | } |
---|
| 59 | }; |
---|
| 60 | |
---|
| 61 | template <> |
---|
| 62 | struct DefaultConverter<std::string> { |
---|
| 63 | std::string operator()(const std::string& str) { |
---|
| 64 | return str; |
---|
| 65 | } |
---|
| 66 | }; |
---|
| 67 | |
---|
| 68 | template <typename _Item> |
---|
| 69 | class MapStorageBase { |
---|
| 70 | public: |
---|
| 71 | typedef _Item Item; |
---|
| 72 | |
---|
| 73 | public: |
---|
| 74 | MapStorageBase() {} |
---|
| 75 | virtual ~MapStorageBase() {} |
---|
| 76 | |
---|
| 77 | virtual void set(const Item& item, const std::string& value) = 0; |
---|
| 78 | |
---|
| 79 | }; |
---|
| 80 | |
---|
| 81 | template <typename _Item, typename _Map, |
---|
| 82 | typename _Converter = DefaultConverter<typename _Map::Value> > |
---|
| 83 | class MapStorage : public MapStorageBase<_Item> { |
---|
| 84 | public: |
---|
| 85 | typedef _Map Map; |
---|
| 86 | typedef _Converter Converter; |
---|
| 87 | typedef _Item Item; |
---|
| 88 | |
---|
| 89 | private: |
---|
| 90 | Map& _map; |
---|
| 91 | Converter _converter; |
---|
| 92 | |
---|
| 93 | public: |
---|
| 94 | MapStorage(Map& map, const Converter& converter = Converter()) |
---|
| 95 | : _map(map), _converter(converter) {} |
---|
| 96 | virtual ~MapStorage() {} |
---|
| 97 | |
---|
| 98 | virtual void set(const Item& item ,const std::string& value) { |
---|
| 99 | _map.set(item, _converter(value)); |
---|
| 100 | } |
---|
| 101 | }; |
---|
| 102 | |
---|
[165] | 103 | template <typename _Graph, bool _dir, typename _Map, |
---|
| 104 | typename _Converter = DefaultConverter<typename _Map::Value> > |
---|
| 105 | class GraphArcMapStorage : public MapStorageBase<typename _Graph::Edge> { |
---|
| 106 | public: |
---|
| 107 | typedef _Map Map; |
---|
| 108 | typedef _Converter Converter; |
---|
| 109 | typedef _Graph Graph; |
---|
| 110 | typedef typename Graph::Edge Item; |
---|
| 111 | static const bool dir = _dir; |
---|
| 112 | |
---|
| 113 | private: |
---|
| 114 | const Graph& _graph; |
---|
| 115 | Map& _map; |
---|
| 116 | Converter _converter; |
---|
| 117 | |
---|
| 118 | public: |
---|
| 119 | GraphArcMapStorage(const Graph& graph, Map& map, |
---|
| 120 | const Converter& converter = Converter()) |
---|
| 121 | : _graph(graph), _map(map), _converter(converter) {} |
---|
| 122 | virtual ~GraphArcMapStorage() {} |
---|
| 123 | |
---|
| 124 | virtual void set(const Item& item ,const std::string& value) { |
---|
| 125 | _map.set(_graph.direct(item, dir), _converter(value)); |
---|
| 126 | } |
---|
| 127 | }; |
---|
| 128 | |
---|
[127] | 129 | class ValueStorageBase { |
---|
| 130 | public: |
---|
| 131 | ValueStorageBase() {} |
---|
| 132 | virtual ~ValueStorageBase() {} |
---|
| 133 | |
---|
| 134 | virtual void set(const std::string&) = 0; |
---|
| 135 | }; |
---|
| 136 | |
---|
| 137 | template <typename _Value, typename _Converter = DefaultConverter<_Value> > |
---|
| 138 | class ValueStorage : public ValueStorageBase { |
---|
| 139 | public: |
---|
| 140 | typedef _Value Value; |
---|
| 141 | typedef _Converter Converter; |
---|
| 142 | |
---|
| 143 | private: |
---|
| 144 | Value& _value; |
---|
| 145 | Converter _converter; |
---|
| 146 | |
---|
| 147 | public: |
---|
| 148 | ValueStorage(Value& value, const Converter& converter = Converter()) |
---|
| 149 | : _value(value), _converter(converter) {} |
---|
| 150 | |
---|
| 151 | virtual void set(const std::string& value) { |
---|
| 152 | _value = _converter(value); |
---|
| 153 | } |
---|
| 154 | }; |
---|
| 155 | |
---|
| 156 | template <typename Value> |
---|
| 157 | struct MapLookUpConverter { |
---|
| 158 | const std::map<std::string, Value>& _map; |
---|
| 159 | |
---|
| 160 | MapLookUpConverter(const std::map<std::string, Value>& map) |
---|
| 161 | : _map(map) {} |
---|
| 162 | |
---|
| 163 | Value operator()(const std::string& str) { |
---|
| 164 | typename std::map<std::string, Value>::const_iterator it = |
---|
| 165 | _map.find(str); |
---|
| 166 | if (it == _map.end()) { |
---|
| 167 | std::ostringstream msg; |
---|
| 168 | msg << "Item not found: " << str; |
---|
| 169 | throw DataFormatError(msg.str().c_str()); |
---|
| 170 | } |
---|
| 171 | return it->second; |
---|
| 172 | } |
---|
| 173 | }; |
---|
| 174 | |
---|
[165] | 175 | template <typename Graph> |
---|
| 176 | struct GraphArcLookUpConverter { |
---|
| 177 | const Graph& _graph; |
---|
| 178 | const std::map<std::string, typename Graph::Edge>& _map; |
---|
| 179 | |
---|
| 180 | GraphArcLookUpConverter(const Graph& graph, |
---|
| 181 | const std::map<std::string, |
---|
| 182 | typename Graph::Edge>& map) |
---|
| 183 | : _graph(graph), _map(map) {} |
---|
| 184 | |
---|
| 185 | typename Graph::Arc operator()(const std::string& str) { |
---|
| 186 | if (str.empty() || (str[0] != '+' && str[0] != '-')) { |
---|
| 187 | throw DataFormatError("Item must start with '+' or '-'"); |
---|
| 188 | } |
---|
| 189 | typename std::map<std::string, typename Graph::Edge> |
---|
| 190 | ::const_iterator it = _map.find(str.substr(1)); |
---|
| 191 | if (it == _map.end()) { |
---|
| 192 | throw DataFormatError("Item not found"); |
---|
| 193 | } |
---|
| 194 | return _graph.direct(it->second, str[0] == '+'); |
---|
| 195 | } |
---|
| 196 | }; |
---|
| 197 | |
---|
[197] | 198 | inline bool isWhiteSpace(char c) { |
---|
[127] | 199 | return c == ' ' || c == '\t' || c == '\v' || |
---|
| 200 | c == '\n' || c == '\r' || c == '\f'; |
---|
| 201 | } |
---|
| 202 | |
---|
[197] | 203 | inline bool isOct(char c) { |
---|
[127] | 204 | return '0' <= c && c <='7'; |
---|
| 205 | } |
---|
| 206 | |
---|
[197] | 207 | inline int valueOct(char c) { |
---|
[127] | 208 | LEMON_ASSERT(isOct(c), "The character is not octal."); |
---|
| 209 | return c - '0'; |
---|
| 210 | } |
---|
| 211 | |
---|
[197] | 212 | inline bool isHex(char c) { |
---|
[127] | 213 | return ('0' <= c && c <= '9') || |
---|
| 214 | ('a' <= c && c <= 'z') || |
---|
| 215 | ('A' <= c && c <= 'Z'); |
---|
| 216 | } |
---|
| 217 | |
---|
[197] | 218 | inline int valueHex(char c) { |
---|
[127] | 219 | LEMON_ASSERT(isHex(c), "The character is not hexadecimal."); |
---|
| 220 | if ('0' <= c && c <= '9') return c - '0'; |
---|
| 221 | if ('a' <= c && c <= 'z') return c - 'a' + 10; |
---|
| 222 | return c - 'A' + 10; |
---|
| 223 | } |
---|
| 224 | |
---|
[197] | 225 | inline bool isIdentifierFirstChar(char c) { |
---|
[127] | 226 | return ('a' <= c && c <= 'z') || |
---|
| 227 | ('A' <= c && c <= 'Z') || c == '_'; |
---|
| 228 | } |
---|
| 229 | |
---|
[197] | 230 | inline bool isIdentifierChar(char c) { |
---|
[127] | 231 | return isIdentifierFirstChar(c) || |
---|
| 232 | ('0' <= c && c <= '9'); |
---|
| 233 | } |
---|
| 234 | |
---|
[197] | 235 | inline char readEscape(std::istream& is) { |
---|
[127] | 236 | char c; |
---|
| 237 | if (!is.get(c)) |
---|
| 238 | throw DataFormatError("Escape format error"); |
---|
| 239 | |
---|
| 240 | switch (c) { |
---|
| 241 | case '\\': |
---|
| 242 | return '\\'; |
---|
| 243 | case '\"': |
---|
| 244 | return '\"'; |
---|
| 245 | case '\'': |
---|
| 246 | return '\''; |
---|
| 247 | case '\?': |
---|
| 248 | return '\?'; |
---|
| 249 | case 'a': |
---|
| 250 | return '\a'; |
---|
| 251 | case 'b': |
---|
| 252 | return '\b'; |
---|
| 253 | case 'f': |
---|
| 254 | return '\f'; |
---|
| 255 | case 'n': |
---|
| 256 | return '\n'; |
---|
| 257 | case 'r': |
---|
| 258 | return '\r'; |
---|
| 259 | case 't': |
---|
| 260 | return '\t'; |
---|
| 261 | case 'v': |
---|
| 262 | return '\v'; |
---|
| 263 | case 'x': |
---|
| 264 | { |
---|
| 265 | int code; |
---|
| 266 | if (!is.get(c) || !isHex(c)) |
---|
| 267 | throw DataFormatError("Escape format error"); |
---|
| 268 | else if (code = valueHex(c), !is.get(c) || !isHex(c)) is.putback(c); |
---|
| 269 | else code = code * 16 + valueHex(c); |
---|
| 270 | return code; |
---|
| 271 | } |
---|
| 272 | default: |
---|
| 273 | { |
---|
| 274 | int code; |
---|
| 275 | if (!isOct(c)) |
---|
| 276 | throw DataFormatError("Escape format error"); |
---|
| 277 | else if (code = valueOct(c), !is.get(c) || !isOct(c)) |
---|
| 278 | is.putback(c); |
---|
| 279 | else if (code = code * 8 + valueOct(c), !is.get(c) || !isOct(c)) |
---|
| 280 | is.putback(c); |
---|
| 281 | else code = code * 8 + valueOct(c); |
---|
| 282 | return code; |
---|
| 283 | } |
---|
| 284 | } |
---|
| 285 | } |
---|
| 286 | |
---|
[197] | 287 | inline std::istream& readToken(std::istream& is, std::string& str) { |
---|
[127] | 288 | std::ostringstream os; |
---|
| 289 | |
---|
| 290 | char c; |
---|
| 291 | is >> std::ws; |
---|
| 292 | |
---|
| 293 | if (!is.get(c)) |
---|
| 294 | return is; |
---|
| 295 | |
---|
| 296 | if (c == '\"') { |
---|
| 297 | while (is.get(c) && c != '\"') { |
---|
| 298 | if (c == '\\') |
---|
| 299 | c = readEscape(is); |
---|
| 300 | os << c; |
---|
| 301 | } |
---|
| 302 | if (!is) |
---|
| 303 | throw DataFormatError("Quoted format error"); |
---|
| 304 | } else { |
---|
| 305 | is.putback(c); |
---|
| 306 | while (is.get(c) && !isWhiteSpace(c)) { |
---|
| 307 | if (c == '\\') |
---|
| 308 | c = readEscape(is); |
---|
| 309 | os << c; |
---|
| 310 | } |
---|
| 311 | if (!is) { |
---|
| 312 | is.clear(); |
---|
| 313 | } else { |
---|
| 314 | is.putback(c); |
---|
| 315 | } |
---|
| 316 | } |
---|
| 317 | str = os.str(); |
---|
| 318 | return is; |
---|
| 319 | } |
---|
[162] | 320 | |
---|
| 321 | class Section { |
---|
| 322 | public: |
---|
| 323 | virtual ~Section() {} |
---|
| 324 | virtual void process(std::istream& is, int& line_num) = 0; |
---|
| 325 | }; |
---|
| 326 | |
---|
| 327 | template <typename Functor> |
---|
| 328 | class LineSection : public Section { |
---|
| 329 | private: |
---|
| 330 | |
---|
| 331 | Functor _functor; |
---|
| 332 | |
---|
| 333 | public: |
---|
| 334 | |
---|
| 335 | LineSection(const Functor& functor) : _functor(functor) {} |
---|
| 336 | virtual ~LineSection() {} |
---|
| 337 | |
---|
| 338 | virtual void process(std::istream& is, int& line_num) { |
---|
| 339 | char c; |
---|
| 340 | std::string line; |
---|
| 341 | while (is.get(c) && c != '@') { |
---|
| 342 | if (c == '\n') { |
---|
| 343 | ++line_num; |
---|
| 344 | } else if (c == '#') { |
---|
| 345 | getline(is, line); |
---|
| 346 | ++line_num; |
---|
| 347 | } else if (!isWhiteSpace(c)) { |
---|
| 348 | is.putback(c); |
---|
| 349 | getline(is, line); |
---|
| 350 | _functor(line); |
---|
| 351 | ++line_num; |
---|
| 352 | } |
---|
| 353 | } |
---|
| 354 | if (is) is.putback(c); |
---|
| 355 | else if (is.eof()) is.clear(); |
---|
| 356 | } |
---|
| 357 | }; |
---|
| 358 | |
---|
| 359 | template <typename Functor> |
---|
| 360 | class StreamSection : public Section { |
---|
| 361 | private: |
---|
| 362 | |
---|
| 363 | Functor _functor; |
---|
| 364 | |
---|
| 365 | public: |
---|
| 366 | |
---|
| 367 | StreamSection(const Functor& functor) : _functor(functor) {} |
---|
| 368 | virtual ~StreamSection() {} |
---|
| 369 | |
---|
| 370 | virtual void process(std::istream& is, int& line_num) { |
---|
| 371 | _functor(is, line_num); |
---|
| 372 | char c; |
---|
| 373 | std::string line; |
---|
| 374 | while (is.get(c) && c != '@') { |
---|
| 375 | if (c == '\n') { |
---|
| 376 | ++line_num; |
---|
| 377 | } else if (!isWhiteSpace(c)) { |
---|
| 378 | getline(is, line); |
---|
| 379 | ++line_num; |
---|
| 380 | } |
---|
| 381 | } |
---|
| 382 | if (is) is.putback(c); |
---|
| 383 | else if (is.eof()) is.clear(); |
---|
| 384 | } |
---|
| 385 | }; |
---|
[127] | 386 | |
---|
| 387 | } |
---|
[156] | 388 | |
---|
[190] | 389 | template <typename Digraph> |
---|
| 390 | class DigraphReader; |
---|
| 391 | |
---|
| 392 | template <typename Digraph> |
---|
| 393 | DigraphReader<Digraph> digraphReader(std::istream& is, Digraph& digraph); |
---|
| 394 | |
---|
| 395 | template <typename Digraph> |
---|
| 396 | DigraphReader<Digraph> digraphReader(const std::string& fn, Digraph& digraph); |
---|
| 397 | |
---|
| 398 | template <typename Digraph> |
---|
| 399 | DigraphReader<Digraph> digraphReader(const char *fn, Digraph& digraph); |
---|
| 400 | |
---|
[156] | 401 | /// \ingroup lemon_io |
---|
| 402 | /// |
---|
[192] | 403 | /// \brief \ref lgf-format "LGF" reader for directed graphs |
---|
[156] | 404 | /// |
---|
| 405 | /// This utility reads an \ref lgf-format "LGF" file. |
---|
| 406 | /// |
---|
| 407 | /// The reading method does a batch processing. The user creates a |
---|
| 408 | /// reader object, then various reading rules can be added to the |
---|
| 409 | /// reader, and eventually the reading is executed with the \c run() |
---|
| 410 | /// member function. A map reading rule can be added to the reader |
---|
| 411 | /// with the \c nodeMap() or \c arcMap() members. An optional |
---|
[162] | 412 | /// converter parameter can also be added as a standard functor |
---|
[192] | 413 | /// converting from \c std::string to the value type of the map. If it |
---|
[162] | 414 | /// is set, it will determine how the tokens in the file should be |
---|
[192] | 415 | /// converted to the value type of the map. If the functor is not set, |
---|
[162] | 416 | /// then a default conversion will be used. One map can be read into |
---|
| 417 | /// multiple map objects at the same time. The \c attribute(), \c |
---|
| 418 | /// node() and \c arc() functions are used to add attribute reading |
---|
| 419 | /// rules. |
---|
[156] | 420 | /// |
---|
| 421 | ///\code |
---|
[192] | 422 | /// DigraphReader<Digraph>(std::cin, digraph). |
---|
| 423 | /// nodeMap("coordinates", coord_map). |
---|
| 424 | /// arcMap("capacity", cap_map). |
---|
| 425 | /// node("source", src). |
---|
| 426 | /// node("target", trg). |
---|
| 427 | /// attribute("caption", caption). |
---|
| 428 | /// run(); |
---|
[156] | 429 | ///\endcode |
---|
| 430 | /// |
---|
| 431 | /// By default the reader uses the first section in the file of the |
---|
| 432 | /// proper type. If a section has an optional name, then it can be |
---|
[162] | 433 | /// selected for reading by giving an optional name parameter to the |
---|
[189] | 434 | /// \c nodes(), \c arcs() or \c attributes() functions. |
---|
[156] | 435 | /// |
---|
| 436 | /// The \c useNodes() and \c useArcs() functions are used to tell the reader |
---|
| 437 | /// that the nodes or arcs should not be constructed (added to the |
---|
| 438 | /// graph) during the reading, but instead the label map of the items |
---|
| 439 | /// are given as a parameter of these functions. An |
---|
[192] | 440 | /// application of these functions is multipass reading, which is |
---|
| 441 | /// important if two \c \@arcs sections must be read from the |
---|
| 442 | /// file. In this case the first phase would read the node set and one |
---|
[156] | 443 | /// of the arc sets, while the second phase would read the second arc |
---|
| 444 | /// set into an \e ArcSet class (\c SmartArcSet or \c ListArcSet). |
---|
| 445 | /// The previously read label node map should be passed to the \c |
---|
| 446 | /// useNodes() functions. Another application of multipass reading when |
---|
[192] | 447 | /// paths are given as a node map or an arc map. It is impossible to read this in |
---|
[156] | 448 | /// a single pass, because the arcs are not constructed when the node |
---|
| 449 | /// maps are read. |
---|
[127] | 450 | template <typename _Digraph> |
---|
| 451 | class DigraphReader { |
---|
| 452 | public: |
---|
| 453 | |
---|
| 454 | typedef _Digraph Digraph; |
---|
[148] | 455 | TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
---|
[127] | 456 | |
---|
| 457 | private: |
---|
| 458 | |
---|
| 459 | |
---|
| 460 | std::istream* _is; |
---|
| 461 | bool local_is; |
---|
| 462 | |
---|
| 463 | Digraph& _digraph; |
---|
| 464 | |
---|
| 465 | std::string _nodes_caption; |
---|
| 466 | std::string _arcs_caption; |
---|
| 467 | std::string _attributes_caption; |
---|
| 468 | |
---|
| 469 | typedef std::map<std::string, Node> NodeIndex; |
---|
| 470 | NodeIndex _node_index; |
---|
| 471 | typedef std::map<std::string, Arc> ArcIndex; |
---|
| 472 | ArcIndex _arc_index; |
---|
| 473 | |
---|
| 474 | typedef std::vector<std::pair<std::string, |
---|
| 475 | _reader_bits::MapStorageBase<Node>*> > NodeMaps; |
---|
| 476 | NodeMaps _node_maps; |
---|
| 477 | |
---|
| 478 | typedef std::vector<std::pair<std::string, |
---|
| 479 | _reader_bits::MapStorageBase<Arc>*> >ArcMaps; |
---|
| 480 | ArcMaps _arc_maps; |
---|
| 481 | |
---|
| 482 | typedef std::multimap<std::string, _reader_bits::ValueStorageBase*> |
---|
| 483 | Attributes; |
---|
| 484 | Attributes _attributes; |
---|
| 485 | |
---|
| 486 | bool _use_nodes; |
---|
| 487 | bool _use_arcs; |
---|
| 488 | |
---|
[188] | 489 | bool _skip_nodes; |
---|
| 490 | bool _skip_arcs; |
---|
| 491 | |
---|
[127] | 492 | int line_num; |
---|
| 493 | std::istringstream line; |
---|
| 494 | |
---|
| 495 | public: |
---|
| 496 | |
---|
[156] | 497 | /// \brief Constructor |
---|
| 498 | /// |
---|
| 499 | /// Construct a directed graph reader, which reads from the given |
---|
| 500 | /// input stream. |
---|
[127] | 501 | DigraphReader(std::istream& is, Digraph& digraph) |
---|
| 502 | : _is(&is), local_is(false), _digraph(digraph), |
---|
[188] | 503 | _use_nodes(false), _use_arcs(false), |
---|
| 504 | _skip_nodes(false), _skip_arcs(false) {} |
---|
[127] | 505 | |
---|
[156] | 506 | /// \brief Constructor |
---|
| 507 | /// |
---|
| 508 | /// Construct a directed graph reader, which reads from the given |
---|
| 509 | /// file. |
---|
[127] | 510 | DigraphReader(const std::string& fn, Digraph& digraph) |
---|
| 511 | : _is(new std::ifstream(fn.c_str())), local_is(true), _digraph(digraph), |
---|
[188] | 512 | _use_nodes(false), _use_arcs(false), |
---|
| 513 | _skip_nodes(false), _skip_arcs(false) {} |
---|
[156] | 514 | |
---|
| 515 | /// \brief Constructor |
---|
| 516 | /// |
---|
| 517 | /// Construct a directed graph reader, which reads from the given |
---|
| 518 | /// file. |
---|
[127] | 519 | DigraphReader(const char* fn, Digraph& digraph) |
---|
| 520 | : _is(new std::ifstream(fn)), local_is(true), _digraph(digraph), |
---|
[188] | 521 | _use_nodes(false), _use_arcs(false), |
---|
| 522 | _skip_nodes(false), _skip_arcs(false) {} |
---|
[127] | 523 | |
---|
[156] | 524 | /// \brief Destructor |
---|
[127] | 525 | ~DigraphReader() { |
---|
| 526 | for (typename NodeMaps::iterator it = _node_maps.begin(); |
---|
| 527 | it != _node_maps.end(); ++it) { |
---|
| 528 | delete it->second; |
---|
| 529 | } |
---|
| 530 | |
---|
| 531 | for (typename ArcMaps::iterator it = _arc_maps.begin(); |
---|
| 532 | it != _arc_maps.end(); ++it) { |
---|
| 533 | delete it->second; |
---|
| 534 | } |
---|
| 535 | |
---|
| 536 | for (typename Attributes::iterator it = _attributes.begin(); |
---|
| 537 | it != _attributes.end(); ++it) { |
---|
| 538 | delete it->second; |
---|
| 539 | } |
---|
| 540 | |
---|
| 541 | if (local_is) { |
---|
| 542 | delete _is; |
---|
| 543 | } |
---|
| 544 | |
---|
| 545 | } |
---|
| 546 | |
---|
| 547 | private: |
---|
[190] | 548 | |
---|
| 549 | friend DigraphReader<Digraph> digraphReader<>(std::istream& is, |
---|
| 550 | Digraph& digraph); |
---|
| 551 | friend DigraphReader<Digraph> digraphReader<>(const std::string& fn, |
---|
| 552 | Digraph& digraph); |
---|
| 553 | friend DigraphReader<Digraph> digraphReader<>(const char *fn, |
---|
| 554 | Digraph& digraph); |
---|
| 555 | |
---|
| 556 | DigraphReader(DigraphReader& other) |
---|
| 557 | : _is(other._is), local_is(other.local_is), _digraph(other._digraph), |
---|
| 558 | _use_nodes(other._use_nodes), _use_arcs(other._use_arcs), |
---|
| 559 | _skip_nodes(other._skip_nodes), _skip_arcs(other._skip_arcs) { |
---|
| 560 | |
---|
| 561 | other._is = 0; |
---|
| 562 | other.local_is = false; |
---|
| 563 | |
---|
| 564 | _node_index.swap(other._node_index); |
---|
| 565 | _arc_index.swap(other._arc_index); |
---|
| 566 | |
---|
| 567 | _node_maps.swap(other._node_maps); |
---|
| 568 | _arc_maps.swap(other._arc_maps); |
---|
| 569 | _attributes.swap(other._attributes); |
---|
| 570 | |
---|
| 571 | _nodes_caption = other._nodes_caption; |
---|
| 572 | _arcs_caption = other._arcs_caption; |
---|
| 573 | _attributes_caption = other._attributes_caption; |
---|
| 574 | |
---|
| 575 | } |
---|
| 576 | |
---|
[127] | 577 | DigraphReader& operator=(const DigraphReader&); |
---|
| 578 | |
---|
| 579 | public: |
---|
| 580 | |
---|
[156] | 581 | /// \name Reading rules |
---|
| 582 | /// @{ |
---|
| 583 | |
---|
| 584 | /// \brief Node map reading rule |
---|
| 585 | /// |
---|
| 586 | /// Add a node map reading rule to the reader. |
---|
[127] | 587 | template <typename Map> |
---|
| 588 | DigraphReader& nodeMap(const std::string& caption, Map& map) { |
---|
| 589 | checkConcept<concepts::WriteMap<Node, typename Map::Value>, Map>(); |
---|
| 590 | _reader_bits::MapStorageBase<Node>* storage = |
---|
| 591 | new _reader_bits::MapStorage<Node, Map>(map); |
---|
| 592 | _node_maps.push_back(std::make_pair(caption, storage)); |
---|
| 593 | return *this; |
---|
| 594 | } |
---|
| 595 | |
---|
[156] | 596 | /// \brief Node map reading rule |
---|
| 597 | /// |
---|
| 598 | /// Add a node map reading rule with specialized converter to the |
---|
| 599 | /// reader. |
---|
[127] | 600 | template <typename Map, typename Converter> |
---|
| 601 | DigraphReader& nodeMap(const std::string& caption, Map& map, |
---|
| 602 | const Converter& converter = Converter()) { |
---|
| 603 | checkConcept<concepts::WriteMap<Node, typename Map::Value>, Map>(); |
---|
| 604 | _reader_bits::MapStorageBase<Node>* storage = |
---|
| 605 | new _reader_bits::MapStorage<Node, Map, Converter>(map, converter); |
---|
| 606 | _node_maps.push_back(std::make_pair(caption, storage)); |
---|
| 607 | return *this; |
---|
| 608 | } |
---|
| 609 | |
---|
[156] | 610 | /// \brief Arc map reading rule |
---|
| 611 | /// |
---|
| 612 | /// Add an arc map reading rule to the reader. |
---|
[127] | 613 | template <typename Map> |
---|
| 614 | DigraphReader& arcMap(const std::string& caption, Map& map) { |
---|
| 615 | checkConcept<concepts::WriteMap<Arc, typename Map::Value>, Map>(); |
---|
| 616 | _reader_bits::MapStorageBase<Arc>* storage = |
---|
| 617 | new _reader_bits::MapStorage<Arc, Map>(map); |
---|
| 618 | _arc_maps.push_back(std::make_pair(caption, storage)); |
---|
| 619 | return *this; |
---|
| 620 | } |
---|
| 621 | |
---|
[156] | 622 | /// \brief Arc map reading rule |
---|
| 623 | /// |
---|
| 624 | /// Add an arc map reading rule with specialized converter to the |
---|
| 625 | /// reader. |
---|
[127] | 626 | template <typename Map, typename Converter> |
---|
| 627 | DigraphReader& arcMap(const std::string& caption, Map& map, |
---|
| 628 | const Converter& converter = Converter()) { |
---|
| 629 | checkConcept<concepts::WriteMap<Arc, typename Map::Value>, Map>(); |
---|
| 630 | _reader_bits::MapStorageBase<Arc>* storage = |
---|
| 631 | new _reader_bits::MapStorage<Arc, Map, Converter>(map, converter); |
---|
| 632 | _arc_maps.push_back(std::make_pair(caption, storage)); |
---|
| 633 | return *this; |
---|
| 634 | } |
---|
| 635 | |
---|
[156] | 636 | /// \brief Attribute reading rule |
---|
| 637 | /// |
---|
| 638 | /// Add an attribute reading rule to the reader. |
---|
[127] | 639 | template <typename Value> |
---|
| 640 | DigraphReader& attribute(const std::string& caption, Value& value) { |
---|
| 641 | _reader_bits::ValueStorageBase* storage = |
---|
| 642 | new _reader_bits::ValueStorage<Value>(value); |
---|
| 643 | _attributes.insert(std::make_pair(caption, storage)); |
---|
| 644 | return *this; |
---|
| 645 | } |
---|
| 646 | |
---|
[156] | 647 | /// \brief Attribute reading rule |
---|
| 648 | /// |
---|
| 649 | /// Add an attribute reading rule with specialized converter to the |
---|
| 650 | /// reader. |
---|
[127] | 651 | template <typename Value, typename Converter> |
---|
| 652 | DigraphReader& attribute(const std::string& caption, Value& value, |
---|
| 653 | const Converter& converter = Converter()) { |
---|
| 654 | _reader_bits::ValueStorageBase* storage = |
---|
| 655 | new _reader_bits::ValueStorage<Value, Converter>(value, converter); |
---|
| 656 | _attributes.insert(std::make_pair(caption, storage)); |
---|
| 657 | return *this; |
---|
| 658 | } |
---|
| 659 | |
---|
[156] | 660 | /// \brief Node reading rule |
---|
| 661 | /// |
---|
| 662 | /// Add a node reading rule to reader. |
---|
[127] | 663 | DigraphReader& node(const std::string& caption, Node& node) { |
---|
| 664 | typedef _reader_bits::MapLookUpConverter<Node> Converter; |
---|
| 665 | Converter converter(_node_index); |
---|
| 666 | _reader_bits::ValueStorageBase* storage = |
---|
| 667 | new _reader_bits::ValueStorage<Node, Converter>(node, converter); |
---|
| 668 | _attributes.insert(std::make_pair(caption, storage)); |
---|
| 669 | return *this; |
---|
| 670 | } |
---|
| 671 | |
---|
[156] | 672 | /// \brief Arc reading rule |
---|
| 673 | /// |
---|
| 674 | /// Add an arc reading rule to reader. |
---|
[127] | 675 | DigraphReader& arc(const std::string& caption, Arc& arc) { |
---|
| 676 | typedef _reader_bits::MapLookUpConverter<Arc> Converter; |
---|
| 677 | Converter converter(_arc_index); |
---|
| 678 | _reader_bits::ValueStorageBase* storage = |
---|
| 679 | new _reader_bits::ValueStorage<Arc, Converter>(arc, converter); |
---|
| 680 | _attributes.insert(std::make_pair(caption, storage)); |
---|
| 681 | return *this; |
---|
| 682 | } |
---|
| 683 | |
---|
[156] | 684 | /// @} |
---|
| 685 | |
---|
| 686 | /// \name Select section by name |
---|
| 687 | /// @{ |
---|
| 688 | |
---|
| 689 | /// \brief Set \c \@nodes section to be read |
---|
| 690 | /// |
---|
| 691 | /// Set \c \@nodes section to be read |
---|
[127] | 692 | DigraphReader& nodes(const std::string& caption) { |
---|
| 693 | _nodes_caption = caption; |
---|
| 694 | return *this; |
---|
| 695 | } |
---|
| 696 | |
---|
[156] | 697 | /// \brief Set \c \@arcs section to be read |
---|
| 698 | /// |
---|
| 699 | /// Set \c \@arcs section to be read |
---|
[127] | 700 | DigraphReader& arcs(const std::string& caption) { |
---|
| 701 | _arcs_caption = caption; |
---|
| 702 | return *this; |
---|
| 703 | } |
---|
| 704 | |
---|
[156] | 705 | /// \brief Set \c \@attributes section to be read |
---|
| 706 | /// |
---|
| 707 | /// Set \c \@attributes section to be read |
---|
[127] | 708 | DigraphReader& attributes(const std::string& caption) { |
---|
| 709 | _attributes_caption = caption; |
---|
| 710 | return *this; |
---|
| 711 | } |
---|
| 712 | |
---|
[156] | 713 | /// @} |
---|
| 714 | |
---|
| 715 | /// \name Using previously constructed node or arc set |
---|
| 716 | /// @{ |
---|
| 717 | |
---|
| 718 | /// \brief Use previously constructed node set |
---|
| 719 | /// |
---|
| 720 | /// Use previously constructed node set, and specify the node |
---|
| 721 | /// label map. |
---|
[127] | 722 | template <typename Map> |
---|
| 723 | DigraphReader& useNodes(const Map& map) { |
---|
| 724 | checkConcept<concepts::ReadMap<Node, typename Map::Value>, Map>(); |
---|
| 725 | LEMON_ASSERT(!_use_nodes, "Multiple usage of useNodes() member"); |
---|
| 726 | _use_nodes = true; |
---|
| 727 | _writer_bits::DefaultConverter<typename Map::Value> converter; |
---|
| 728 | for (NodeIt n(_digraph); n != INVALID; ++n) { |
---|
| 729 | _node_index.insert(std::make_pair(converter(map[n]), n)); |
---|
| 730 | } |
---|
| 731 | return *this; |
---|
| 732 | } |
---|
| 733 | |
---|
[156] | 734 | /// \brief Use previously constructed node set |
---|
| 735 | /// |
---|
| 736 | /// Use previously constructed node set, and specify the node |
---|
| 737 | /// label map and a functor which converts the label map values to |
---|
[192] | 738 | /// \c std::string. |
---|
[127] | 739 | template <typename Map, typename Converter> |
---|
| 740 | DigraphReader& useNodes(const Map& map, |
---|
| 741 | const Converter& converter = Converter()) { |
---|
| 742 | checkConcept<concepts::ReadMap<Node, typename Map::Value>, Map>(); |
---|
| 743 | LEMON_ASSERT(!_use_nodes, "Multiple usage of useNodes() member"); |
---|
| 744 | _use_nodes = true; |
---|
| 745 | for (NodeIt n(_digraph); n != INVALID; ++n) { |
---|
| 746 | _node_index.insert(std::make_pair(converter(map[n]), n)); |
---|
| 747 | } |
---|
| 748 | return *this; |
---|
| 749 | } |
---|
| 750 | |
---|
[156] | 751 | /// \brief Use previously constructed arc set |
---|
| 752 | /// |
---|
| 753 | /// Use previously constructed arc set, and specify the arc |
---|
| 754 | /// label map. |
---|
[127] | 755 | template <typename Map> |
---|
| 756 | DigraphReader& useArcs(const Map& map) { |
---|
| 757 | checkConcept<concepts::ReadMap<Arc, typename Map::Value>, Map>(); |
---|
| 758 | LEMON_ASSERT(!_use_arcs, "Multiple usage of useArcs() member"); |
---|
| 759 | _use_arcs = true; |
---|
| 760 | _writer_bits::DefaultConverter<typename Map::Value> converter; |
---|
| 761 | for (ArcIt a(_digraph); a != INVALID; ++a) { |
---|
| 762 | _arc_index.insert(std::make_pair(converter(map[a]), a)); |
---|
| 763 | } |
---|
| 764 | return *this; |
---|
| 765 | } |
---|
| 766 | |
---|
[156] | 767 | /// \brief Use previously constructed arc set |
---|
| 768 | /// |
---|
| 769 | /// Use previously constructed arc set, and specify the arc |
---|
| 770 | /// label map and a functor which converts the label map values to |
---|
[192] | 771 | /// \c std::string. |
---|
[127] | 772 | template <typename Map, typename Converter> |
---|
| 773 | DigraphReader& useArcs(const Map& map, |
---|
[188] | 774 | const Converter& converter = Converter()) { |
---|
[127] | 775 | checkConcept<concepts::ReadMap<Arc, typename Map::Value>, Map>(); |
---|
| 776 | LEMON_ASSERT(!_use_arcs, "Multiple usage of useArcs() member"); |
---|
| 777 | _use_arcs = true; |
---|
| 778 | for (ArcIt a(_digraph); a != INVALID; ++a) { |
---|
| 779 | _arc_index.insert(std::make_pair(converter(map[a]), a)); |
---|
| 780 | } |
---|
| 781 | return *this; |
---|
| 782 | } |
---|
| 783 | |
---|
[188] | 784 | /// \brief Skips the reading of node section |
---|
| 785 | /// |
---|
| 786 | /// Omit the reading of the node section. This implies that each node |
---|
[192] | 787 | /// map reading rule will be abandoned, and the nodes of the graph |
---|
[188] | 788 | /// will not be constructed, which usually cause that the arc set |
---|
[192] | 789 | /// could not be read due to lack of node name resolving. |
---|
| 790 | /// Therefore \c skipArcs() function should also be used, or |
---|
| 791 | /// \c useNodes() should be used to specify the label of the nodes. |
---|
[188] | 792 | DigraphReader& skipNodes() { |
---|
| 793 | LEMON_ASSERT(!_skip_nodes, "Skip nodes already set"); |
---|
| 794 | _skip_nodes = true; |
---|
| 795 | return *this; |
---|
| 796 | } |
---|
| 797 | |
---|
| 798 | /// \brief Skips the reading of arc section |
---|
| 799 | /// |
---|
| 800 | /// Omit the reading of the arc section. This implies that each arc |
---|
[192] | 801 | /// map reading rule will be abandoned, and the arcs of the graph |
---|
[188] | 802 | /// will not be constructed. |
---|
| 803 | DigraphReader& skipArcs() { |
---|
| 804 | LEMON_ASSERT(!_skip_arcs, "Skip arcs already set"); |
---|
| 805 | _skip_arcs = true; |
---|
| 806 | return *this; |
---|
| 807 | } |
---|
| 808 | |
---|
[156] | 809 | /// @} |
---|
| 810 | |
---|
[127] | 811 | private: |
---|
| 812 | |
---|
| 813 | bool readLine() { |
---|
| 814 | std::string str; |
---|
| 815 | while(++line_num, std::getline(*_is, str)) { |
---|
| 816 | line.clear(); line.str(str); |
---|
| 817 | char c; |
---|
| 818 | if (line >> std::ws >> c && c != '#') { |
---|
| 819 | line.putback(c); |
---|
| 820 | return true; |
---|
| 821 | } |
---|
| 822 | } |
---|
| 823 | return false; |
---|
| 824 | } |
---|
| 825 | |
---|
| 826 | bool readSuccess() { |
---|
| 827 | return static_cast<bool>(*_is); |
---|
| 828 | } |
---|
| 829 | |
---|
| 830 | void skipSection() { |
---|
| 831 | char c; |
---|
| 832 | while (readSuccess() && line >> c && c != '@') { |
---|
| 833 | readLine(); |
---|
| 834 | } |
---|
| 835 | line.putback(c); |
---|
| 836 | } |
---|
| 837 | |
---|
| 838 | void readNodes() { |
---|
| 839 | |
---|
| 840 | std::vector<int> map_index(_node_maps.size()); |
---|
| 841 | int map_num, label_index; |
---|
| 842 | |
---|
[186] | 843 | char c; |
---|
| 844 | if (!readLine() || !(line >> c) || c == '@') { |
---|
| 845 | if (readSuccess() && line) line.putback(c); |
---|
| 846 | if (!_node_maps.empty()) |
---|
| 847 | throw DataFormatError("Cannot find map names"); |
---|
| 848 | return; |
---|
| 849 | } |
---|
| 850 | line.putback(c); |
---|
| 851 | |
---|
[127] | 852 | { |
---|
| 853 | std::map<std::string, int> maps; |
---|
| 854 | |
---|
| 855 | std::string map; |
---|
| 856 | int index = 0; |
---|
[156] | 857 | while (_reader_bits::readToken(line, map)) { |
---|
[127] | 858 | if (maps.find(map) != maps.end()) { |
---|
| 859 | std::ostringstream msg; |
---|
| 860 | msg << "Multiple occurence of node map: " << map; |
---|
| 861 | throw DataFormatError(msg.str().c_str()); |
---|
| 862 | } |
---|
| 863 | maps.insert(std::make_pair(map, index)); |
---|
| 864 | ++index; |
---|
| 865 | } |
---|
| 866 | |
---|
| 867 | for (int i = 0; i < static_cast<int>(_node_maps.size()); ++i) { |
---|
| 868 | std::map<std::string, int>::iterator jt = |
---|
| 869 | maps.find(_node_maps[i].first); |
---|
| 870 | if (jt == maps.end()) { |
---|
| 871 | std::ostringstream msg; |
---|
| 872 | msg << "Map not found in file: " << _node_maps[i].first; |
---|
| 873 | throw DataFormatError(msg.str().c_str()); |
---|
| 874 | } |
---|
| 875 | map_index[i] = jt->second; |
---|
| 876 | } |
---|
| 877 | |
---|
| 878 | { |
---|
| 879 | std::map<std::string, int>::iterator jt = maps.find("label"); |
---|
[186] | 880 | if (jt != maps.end()) { |
---|
| 881 | label_index = jt->second; |
---|
| 882 | } else { |
---|
| 883 | label_index = -1; |
---|
| 884 | } |
---|
[127] | 885 | } |
---|
| 886 | map_num = maps.size(); |
---|
| 887 | } |
---|
| 888 | |
---|
| 889 | while (readLine() && line >> c && c != '@') { |
---|
| 890 | line.putback(c); |
---|
| 891 | |
---|
| 892 | std::vector<std::string> tokens(map_num); |
---|
| 893 | for (int i = 0; i < map_num; ++i) { |
---|
| 894 | if (!_reader_bits::readToken(line, tokens[i])) { |
---|
| 895 | std::ostringstream msg; |
---|
| 896 | msg << "Column not found (" << i + 1 << ")"; |
---|
| 897 | throw DataFormatError(msg.str().c_str()); |
---|
| 898 | } |
---|
| 899 | } |
---|
| 900 | if (line >> std::ws >> c) |
---|
| 901 | throw DataFormatError("Extra character on the end of line"); |
---|
| 902 | |
---|
| 903 | Node n; |
---|
| 904 | if (!_use_nodes) { |
---|
| 905 | n = _digraph.addNode(); |
---|
[186] | 906 | if (label_index != -1) |
---|
| 907 | _node_index.insert(std::make_pair(tokens[label_index], n)); |
---|
[127] | 908 | } else { |
---|
[186] | 909 | if (label_index == -1) |
---|
| 910 | throw DataFormatError("Label map not found in file"); |
---|
[127] | 911 | typename std::map<std::string, Node>::iterator it = |
---|
| 912 | _node_index.find(tokens[label_index]); |
---|
| 913 | if (it == _node_index.end()) { |
---|
| 914 | std::ostringstream msg; |
---|
| 915 | msg << "Node with label not found: " << tokens[label_index]; |
---|
| 916 | throw DataFormatError(msg.str().c_str()); |
---|
| 917 | } |
---|
| 918 | n = it->second; |
---|
| 919 | } |
---|
| 920 | |
---|
| 921 | for (int i = 0; i < static_cast<int>(_node_maps.size()); ++i) { |
---|
| 922 | _node_maps[i].second->set(n, tokens[map_index[i]]); |
---|
| 923 | } |
---|
| 924 | |
---|
| 925 | } |
---|
| 926 | if (readSuccess()) { |
---|
| 927 | line.putback(c); |
---|
| 928 | } |
---|
| 929 | } |
---|
| 930 | |
---|
| 931 | void readArcs() { |
---|
| 932 | |
---|
| 933 | std::vector<int> map_index(_arc_maps.size()); |
---|
| 934 | int map_num, label_index; |
---|
| 935 | |
---|
[186] | 936 | char c; |
---|
| 937 | if (!readLine() || !(line >> c) || c == '@') { |
---|
| 938 | if (readSuccess() && line) line.putback(c); |
---|
| 939 | if (!_arc_maps.empty()) |
---|
| 940 | throw DataFormatError("Cannot find map names"); |
---|
| 941 | return; |
---|
| 942 | } |
---|
| 943 | line.putback(c); |
---|
[127] | 944 | |
---|
| 945 | { |
---|
| 946 | std::map<std::string, int> maps; |
---|
| 947 | |
---|
| 948 | std::string map; |
---|
| 949 | int index = 0; |
---|
[156] | 950 | while (_reader_bits::readToken(line, map)) { |
---|
[127] | 951 | if (maps.find(map) != maps.end()) { |
---|
| 952 | std::ostringstream msg; |
---|
| 953 | msg << "Multiple occurence of arc map: " << map; |
---|
| 954 | throw DataFormatError(msg.str().c_str()); |
---|
| 955 | } |
---|
| 956 | maps.insert(std::make_pair(map, index)); |
---|
| 957 | ++index; |
---|
| 958 | } |
---|
| 959 | |
---|
| 960 | for (int i = 0; i < static_cast<int>(_arc_maps.size()); ++i) { |
---|
| 961 | std::map<std::string, int>::iterator jt = |
---|
| 962 | maps.find(_arc_maps[i].first); |
---|
| 963 | if (jt == maps.end()) { |
---|
| 964 | std::ostringstream msg; |
---|
| 965 | msg << "Map not found in file: " << _arc_maps[i].first; |
---|
| 966 | throw DataFormatError(msg.str().c_str()); |
---|
| 967 | } |
---|
| 968 | map_index[i] = jt->second; |
---|
| 969 | } |
---|
| 970 | |
---|
| 971 | { |
---|
| 972 | std::map<std::string, int>::iterator jt = maps.find("label"); |
---|
[186] | 973 | if (jt != maps.end()) { |
---|
| 974 | label_index = jt->second; |
---|
| 975 | } else { |
---|
| 976 | label_index = -1; |
---|
| 977 | } |
---|
[127] | 978 | } |
---|
| 979 | map_num = maps.size(); |
---|
| 980 | } |
---|
| 981 | |
---|
| 982 | while (readLine() && line >> c && c != '@') { |
---|
| 983 | line.putback(c); |
---|
| 984 | |
---|
| 985 | std::string source_token; |
---|
| 986 | std::string target_token; |
---|
| 987 | |
---|
| 988 | if (!_reader_bits::readToken(line, source_token)) |
---|
| 989 | throw DataFormatError("Source not found"); |
---|
| 990 | |
---|
| 991 | if (!_reader_bits::readToken(line, target_token)) |
---|
[186] | 992 | throw DataFormatError("Target not found"); |
---|
[127] | 993 | |
---|
| 994 | std::vector<std::string> tokens(map_num); |
---|
| 995 | for (int i = 0; i < map_num; ++i) { |
---|
| 996 | if (!_reader_bits::readToken(line, tokens[i])) { |
---|
| 997 | std::ostringstream msg; |
---|
| 998 | msg << "Column not found (" << i + 1 << ")"; |
---|
| 999 | throw DataFormatError(msg.str().c_str()); |
---|
| 1000 | } |
---|
| 1001 | } |
---|
| 1002 | if (line >> std::ws >> c) |
---|
| 1003 | throw DataFormatError("Extra character on the end of line"); |
---|
| 1004 | |
---|
| 1005 | Arc a; |
---|
| 1006 | if (!_use_arcs) { |
---|
| 1007 | |
---|
| 1008 | typename NodeIndex::iterator it; |
---|
| 1009 | |
---|
| 1010 | it = _node_index.find(source_token); |
---|
| 1011 | if (it == _node_index.end()) { |
---|
| 1012 | std::ostringstream msg; |
---|
| 1013 | msg << "Item not found: " << source_token; |
---|
| 1014 | throw DataFormatError(msg.str().c_str()); |
---|
| 1015 | } |
---|
| 1016 | Node source = it->second; |
---|
| 1017 | |
---|
| 1018 | it = _node_index.find(target_token); |
---|
| 1019 | if (it == _node_index.end()) { |
---|
| 1020 | std::ostringstream msg; |
---|
| 1021 | msg << "Item not found: " << target_token; |
---|
| 1022 | throw DataFormatError(msg.str().c_str()); |
---|
| 1023 | } |
---|
| 1024 | Node target = it->second; |
---|
| 1025 | |
---|
| 1026 | a = _digraph.addArc(source, target); |
---|
[186] | 1027 | if (label_index != -1) |
---|
| 1028 | _arc_index.insert(std::make_pair(tokens[label_index], a)); |
---|
[127] | 1029 | } else { |
---|
[186] | 1030 | if (label_index == -1) |
---|
| 1031 | throw DataFormatError("Label map not found in file"); |
---|
[127] | 1032 | typename std::map<std::string, Arc>::iterator it = |
---|
| 1033 | _arc_index.find(tokens[label_index]); |
---|
| 1034 | if (it == _arc_index.end()) { |
---|
| 1035 | std::ostringstream msg; |
---|
| 1036 | msg << "Arc with label not found: " << tokens[label_index]; |
---|
| 1037 | throw DataFormatError(msg.str().c_str()); |
---|
| 1038 | } |
---|
| 1039 | a = it->second; |
---|
| 1040 | } |
---|
| 1041 | |
---|
| 1042 | for (int i = 0; i < static_cast<int>(_arc_maps.size()); ++i) { |
---|
| 1043 | _arc_maps[i].second->set(a, tokens[map_index[i]]); |
---|
| 1044 | } |
---|
| 1045 | |
---|
| 1046 | } |
---|
| 1047 | if (readSuccess()) { |
---|
| 1048 | line.putback(c); |
---|
| 1049 | } |
---|
| 1050 | } |
---|
| 1051 | |
---|
| 1052 | void readAttributes() { |
---|
| 1053 | |
---|
| 1054 | std::set<std::string> read_attr; |
---|
| 1055 | |
---|
| 1056 | char c; |
---|
| 1057 | while (readLine() && line >> c && c != '@') { |
---|
| 1058 | line.putback(c); |
---|
| 1059 | |
---|
| 1060 | std::string attr, token; |
---|
[156] | 1061 | if (!_reader_bits::readToken(line, attr)) |
---|
[127] | 1062 | throw DataFormatError("Attribute name not found"); |
---|
| 1063 | if (!_reader_bits::readToken(line, token)) |
---|
| 1064 | throw DataFormatError("Attribute value not found"); |
---|
| 1065 | if (line >> c) |
---|
| 1066 | throw DataFormatError("Extra character on the end of line"); |
---|
| 1067 | |
---|
| 1068 | { |
---|
| 1069 | std::set<std::string>::iterator it = read_attr.find(attr); |
---|
| 1070 | if (it != read_attr.end()) { |
---|
| 1071 | std::ostringstream msg; |
---|
| 1072 | msg << "Multiple occurence of attribute " << attr; |
---|
| 1073 | throw DataFormatError(msg.str().c_str()); |
---|
| 1074 | } |
---|
| 1075 | read_attr.insert(attr); |
---|
| 1076 | } |
---|
| 1077 | |
---|
| 1078 | { |
---|
| 1079 | typename Attributes::iterator it = _attributes.lower_bound(attr); |
---|
| 1080 | while (it != _attributes.end() && it->first == attr) { |
---|
| 1081 | it->second->set(token); |
---|
| 1082 | ++it; |
---|
| 1083 | } |
---|
| 1084 | } |
---|
| 1085 | |
---|
| 1086 | } |
---|
| 1087 | if (readSuccess()) { |
---|
| 1088 | line.putback(c); |
---|
| 1089 | } |
---|
| 1090 | for (typename Attributes::iterator it = _attributes.begin(); |
---|
| 1091 | it != _attributes.end(); ++it) { |
---|
| 1092 | if (read_attr.find(it->first) == read_attr.end()) { |
---|
| 1093 | std::ostringstream msg; |
---|
| 1094 | msg << "Attribute not found in file: " << it->first; |
---|
| 1095 | throw DataFormatError(msg.str().c_str()); |
---|
| 1096 | } |
---|
| 1097 | } |
---|
| 1098 | } |
---|
| 1099 | |
---|
| 1100 | public: |
---|
[156] | 1101 | |
---|
| 1102 | /// \name Execution of the reader |
---|
| 1103 | /// @{ |
---|
| 1104 | |
---|
| 1105 | /// \brief Start the batch processing |
---|
| 1106 | /// |
---|
| 1107 | /// This function starts the batch processing |
---|
[127] | 1108 | void run() { |
---|
| 1109 | LEMON_ASSERT(_is != 0, "This reader assigned to an other reader"); |
---|
[163] | 1110 | if (!*_is) { |
---|
| 1111 | throw DataFormatError("Cannot find file"); |
---|
| 1112 | } |
---|
[127] | 1113 | |
---|
[188] | 1114 | bool nodes_done = _skip_nodes; |
---|
| 1115 | bool arcs_done = _skip_arcs; |
---|
[127] | 1116 | bool attributes_done = false; |
---|
| 1117 | |
---|
| 1118 | line_num = 0; |
---|
| 1119 | readLine(); |
---|
[172] | 1120 | skipSection(); |
---|
[127] | 1121 | |
---|
| 1122 | while (readSuccess()) { |
---|
| 1123 | try { |
---|
| 1124 | char c; |
---|
| 1125 | std::string section, caption; |
---|
| 1126 | line >> c; |
---|
[156] | 1127 | _reader_bits::readToken(line, section); |
---|
| 1128 | _reader_bits::readToken(line, caption); |
---|
[127] | 1129 | |
---|
| 1130 | if (line >> c) |
---|
| 1131 | throw DataFormatError("Extra character on the end of line"); |
---|
| 1132 | |
---|
| 1133 | if (section == "nodes" && !nodes_done) { |
---|
| 1134 | if (_nodes_caption.empty() || _nodes_caption == caption) { |
---|
| 1135 | readNodes(); |
---|
| 1136 | nodes_done = true; |
---|
| 1137 | } |
---|
| 1138 | } else if ((section == "arcs" || section == "edges") && |
---|
| 1139 | !arcs_done) { |
---|
| 1140 | if (_arcs_caption.empty() || _arcs_caption == caption) { |
---|
| 1141 | readArcs(); |
---|
| 1142 | arcs_done = true; |
---|
| 1143 | } |
---|
| 1144 | } else if (section == "attributes" && !attributes_done) { |
---|
| 1145 | if (_attributes_caption.empty() || _attributes_caption == caption) { |
---|
| 1146 | readAttributes(); |
---|
| 1147 | attributes_done = true; |
---|
| 1148 | } |
---|
| 1149 | } else { |
---|
[172] | 1150 | readLine(); |
---|
| 1151 | skipSection(); |
---|
[127] | 1152 | } |
---|
| 1153 | } catch (DataFormatError& error) { |
---|
| 1154 | error.line(line_num); |
---|
| 1155 | throw; |
---|
| 1156 | } |
---|
| 1157 | } |
---|
| 1158 | |
---|
| 1159 | if (!nodes_done) { |
---|
| 1160 | throw DataFormatError("Section @nodes not found"); |
---|
| 1161 | } |
---|
| 1162 | |
---|
| 1163 | if (!arcs_done) { |
---|
| 1164 | throw DataFormatError("Section @arcs not found"); |
---|
| 1165 | } |
---|
| 1166 | |
---|
| 1167 | if (!attributes_done && !_attributes.empty()) { |
---|
| 1168 | throw DataFormatError("Section @attributes not found"); |
---|
| 1169 | } |
---|
| 1170 | |
---|
| 1171 | } |
---|
[156] | 1172 | |
---|
| 1173 | /// @} |
---|
[127] | 1174 | |
---|
| 1175 | }; |
---|
| 1176 | |
---|
[192] | 1177 | /// \brief Return a \ref DigraphReader class |
---|
| 1178 | /// |
---|
| 1179 | /// This function just returns a \ref DigraphReader class. |
---|
[156] | 1180 | /// \relates DigraphReader |
---|
[127] | 1181 | template <typename Digraph> |
---|
| 1182 | DigraphReader<Digraph> digraphReader(std::istream& is, Digraph& digraph) { |
---|
[163] | 1183 | DigraphReader<Digraph> tmp(is, digraph); |
---|
| 1184 | return tmp; |
---|
[127] | 1185 | } |
---|
| 1186 | |
---|
[192] | 1187 | /// \brief Return a \ref DigraphReader class |
---|
| 1188 | /// |
---|
| 1189 | /// This function just returns a \ref DigraphReader class. |
---|
[156] | 1190 | /// \relates DigraphReader |
---|
[127] | 1191 | template <typename Digraph> |
---|
| 1192 | DigraphReader<Digraph> digraphReader(const std::string& fn, |
---|
| 1193 | Digraph& digraph) { |
---|
[163] | 1194 | DigraphReader<Digraph> tmp(fn, digraph); |
---|
| 1195 | return tmp; |
---|
[127] | 1196 | } |
---|
| 1197 | |
---|
[192] | 1198 | /// \brief Return a \ref DigraphReader class |
---|
| 1199 | /// |
---|
| 1200 | /// This function just returns a \ref DigraphReader class. |
---|
[156] | 1201 | /// \relates DigraphReader |
---|
[127] | 1202 | template <typename Digraph> |
---|
| 1203 | DigraphReader<Digraph> digraphReader(const char* fn, Digraph& digraph) { |
---|
[163] | 1204 | DigraphReader<Digraph> tmp(fn, digraph); |
---|
| 1205 | return tmp; |
---|
[127] | 1206 | } |
---|
[165] | 1207 | |
---|
[190] | 1208 | template <typename Graph> |
---|
| 1209 | class GraphReader; |
---|
| 1210 | |
---|
| 1211 | template <typename Graph> |
---|
| 1212 | GraphReader<Graph> graphReader(std::istream& is, Graph& graph); |
---|
| 1213 | |
---|
| 1214 | template <typename Graph> |
---|
| 1215 | GraphReader<Graph> graphReader(const std::string& fn, Graph& graph); |
---|
| 1216 | |
---|
| 1217 | template <typename Graph> |
---|
| 1218 | GraphReader<Graph> graphReader(const char *fn, Graph& graph); |
---|
| 1219 | |
---|
[165] | 1220 | /// \ingroup lemon_io |
---|
| 1221 | /// |
---|
[192] | 1222 | /// \brief \ref lgf-format "LGF" reader for undirected graphs |
---|
[165] | 1223 | /// |
---|
| 1224 | /// This utility reads an \ref lgf-format "LGF" file. |
---|
[192] | 1225 | /// |
---|
| 1226 | /// It can be used almost the same way as \c DigraphReader. |
---|
| 1227 | /// The only difference is that this class can handle edges and |
---|
| 1228 | /// edge maps as well as arcs and arc maps. |
---|
[165] | 1229 | template <typename _Graph> |
---|
| 1230 | class GraphReader { |
---|
| 1231 | public: |
---|
| 1232 | |
---|
| 1233 | typedef _Graph Graph; |
---|
| 1234 | TEMPLATE_GRAPH_TYPEDEFS(Graph); |
---|
| 1235 | |
---|
| 1236 | private: |
---|
| 1237 | |
---|
| 1238 | std::istream* _is; |
---|
| 1239 | bool local_is; |
---|
| 1240 | |
---|
| 1241 | Graph& _graph; |
---|
| 1242 | |
---|
| 1243 | std::string _nodes_caption; |
---|
| 1244 | std::string _edges_caption; |
---|
| 1245 | std::string _attributes_caption; |
---|
| 1246 | |
---|
| 1247 | typedef std::map<std::string, Node> NodeIndex; |
---|
| 1248 | NodeIndex _node_index; |
---|
| 1249 | typedef std::map<std::string, Edge> EdgeIndex; |
---|
| 1250 | EdgeIndex _edge_index; |
---|
| 1251 | |
---|
| 1252 | typedef std::vector<std::pair<std::string, |
---|
| 1253 | _reader_bits::MapStorageBase<Node>*> > NodeMaps; |
---|
| 1254 | NodeMaps _node_maps; |
---|
| 1255 | |
---|
| 1256 | typedef std::vector<std::pair<std::string, |
---|
| 1257 | _reader_bits::MapStorageBase<Edge>*> > EdgeMaps; |
---|
| 1258 | EdgeMaps _edge_maps; |
---|
| 1259 | |
---|
| 1260 | typedef std::multimap<std::string, _reader_bits::ValueStorageBase*> |
---|
| 1261 | Attributes; |
---|
| 1262 | Attributes _attributes; |
---|
| 1263 | |
---|
| 1264 | bool _use_nodes; |
---|
| 1265 | bool _use_edges; |
---|
| 1266 | |
---|
[188] | 1267 | bool _skip_nodes; |
---|
| 1268 | bool _skip_edges; |
---|
| 1269 | |
---|
[165] | 1270 | int line_num; |
---|
| 1271 | std::istringstream line; |
---|
| 1272 | |
---|
| 1273 | public: |
---|
| 1274 | |
---|
| 1275 | /// \brief Constructor |
---|
| 1276 | /// |
---|
[192] | 1277 | /// Construct an undirected graph reader, which reads from the given |
---|
[165] | 1278 | /// input stream. |
---|
| 1279 | GraphReader(std::istream& is, Graph& graph) |
---|
| 1280 | : _is(&is), local_is(false), _graph(graph), |
---|
[188] | 1281 | _use_nodes(false), _use_edges(false), |
---|
| 1282 | _skip_nodes(false), _skip_edges(false) {} |
---|
[165] | 1283 | |
---|
| 1284 | /// \brief Constructor |
---|
| 1285 | /// |
---|
[192] | 1286 | /// Construct an undirected graph reader, which reads from the given |
---|
[165] | 1287 | /// file. |
---|
| 1288 | GraphReader(const std::string& fn, Graph& graph) |
---|
| 1289 | : _is(new std::ifstream(fn.c_str())), local_is(true), _graph(graph), |
---|
[188] | 1290 | _use_nodes(false), _use_edges(false), |
---|
| 1291 | _skip_nodes(false), _skip_edges(false) {} |
---|
[165] | 1292 | |
---|
| 1293 | /// \brief Constructor |
---|
| 1294 | /// |
---|
[192] | 1295 | /// Construct an undirected graph reader, which reads from the given |
---|
[165] | 1296 | /// file. |
---|
| 1297 | GraphReader(const char* fn, Graph& graph) |
---|
| 1298 | : _is(new std::ifstream(fn)), local_is(true), _graph(graph), |
---|
[188] | 1299 | _use_nodes(false), _use_edges(false), |
---|
| 1300 | _skip_nodes(false), _skip_edges(false) {} |
---|
[165] | 1301 | |
---|
| 1302 | /// \brief Destructor |
---|
| 1303 | ~GraphReader() { |
---|
| 1304 | for (typename NodeMaps::iterator it = _node_maps.begin(); |
---|
| 1305 | it != _node_maps.end(); ++it) { |
---|
| 1306 | delete it->second; |
---|
| 1307 | } |
---|
| 1308 | |
---|
| 1309 | for (typename EdgeMaps::iterator it = _edge_maps.begin(); |
---|
| 1310 | it != _edge_maps.end(); ++it) { |
---|
| 1311 | delete it->second; |
---|
| 1312 | } |
---|
| 1313 | |
---|
| 1314 | for (typename Attributes::iterator it = _attributes.begin(); |
---|
| 1315 | it != _attributes.end(); ++it) { |
---|
| 1316 | delete it->second; |
---|
| 1317 | } |
---|
| 1318 | |
---|
| 1319 | if (local_is) { |
---|
| 1320 | delete _is; |
---|
| 1321 | } |
---|
| 1322 | |
---|
| 1323 | } |
---|
| 1324 | |
---|
| 1325 | private: |
---|
[190] | 1326 | friend GraphReader<Graph> graphReader<>(std::istream& is, Graph& graph); |
---|
| 1327 | friend GraphReader<Graph> graphReader<>(const std::string& fn, |
---|
| 1328 | Graph& graph); |
---|
| 1329 | friend GraphReader<Graph> graphReader<>(const char *fn, Graph& graph); |
---|
| 1330 | |
---|
| 1331 | GraphReader(GraphReader& other) |
---|
| 1332 | : _is(other._is), local_is(other.local_is), _graph(other._graph), |
---|
| 1333 | _use_nodes(other._use_nodes), _use_edges(other._use_edges), |
---|
| 1334 | _skip_nodes(other._skip_nodes), _skip_edges(other._skip_edges) { |
---|
| 1335 | |
---|
| 1336 | other._is = 0; |
---|
| 1337 | other.local_is = false; |
---|
| 1338 | |
---|
| 1339 | _node_index.swap(other._node_index); |
---|
| 1340 | _edge_index.swap(other._edge_index); |
---|
| 1341 | |
---|
| 1342 | _node_maps.swap(other._node_maps); |
---|
| 1343 | _edge_maps.swap(other._edge_maps); |
---|
| 1344 | _attributes.swap(other._attributes); |
---|
| 1345 | |
---|
| 1346 | _nodes_caption = other._nodes_caption; |
---|
| 1347 | _edges_caption = other._edges_caption; |
---|
| 1348 | _attributes_caption = other._attributes_caption; |
---|
| 1349 | |
---|
| 1350 | } |
---|
| 1351 | |
---|
[165] | 1352 | GraphReader& operator=(const GraphReader&); |
---|
| 1353 | |
---|
| 1354 | public: |
---|
| 1355 | |
---|
| 1356 | /// \name Reading rules |
---|
| 1357 | /// @{ |
---|
| 1358 | |
---|
| 1359 | /// \brief Node map reading rule |
---|
| 1360 | /// |
---|
| 1361 | /// Add a node map reading rule to the reader. |
---|
| 1362 | template <typename Map> |
---|
| 1363 | GraphReader& nodeMap(const std::string& caption, Map& map) { |
---|
| 1364 | checkConcept<concepts::WriteMap<Node, typename Map::Value>, Map>(); |
---|
| 1365 | _reader_bits::MapStorageBase<Node>* storage = |
---|
| 1366 | new _reader_bits::MapStorage<Node, Map>(map); |
---|
| 1367 | _node_maps.push_back(std::make_pair(caption, storage)); |
---|
| 1368 | return *this; |
---|
| 1369 | } |
---|
| 1370 | |
---|
| 1371 | /// \brief Node map reading rule |
---|
| 1372 | /// |
---|
| 1373 | /// Add a node map reading rule with specialized converter to the |
---|
| 1374 | /// reader. |
---|
| 1375 | template <typename Map, typename Converter> |
---|
| 1376 | GraphReader& nodeMap(const std::string& caption, Map& map, |
---|
| 1377 | const Converter& converter = Converter()) { |
---|
| 1378 | checkConcept<concepts::WriteMap<Node, typename Map::Value>, Map>(); |
---|
| 1379 | _reader_bits::MapStorageBase<Node>* storage = |
---|
| 1380 | new _reader_bits::MapStorage<Node, Map, Converter>(map, converter); |
---|
| 1381 | _node_maps.push_back(std::make_pair(caption, storage)); |
---|
| 1382 | return *this; |
---|
| 1383 | } |
---|
| 1384 | |
---|
| 1385 | /// \brief Edge map reading rule |
---|
| 1386 | /// |
---|
| 1387 | /// Add an edge map reading rule to the reader. |
---|
| 1388 | template <typename Map> |
---|
| 1389 | GraphReader& edgeMap(const std::string& caption, Map& map) { |
---|
| 1390 | checkConcept<concepts::WriteMap<Edge, typename Map::Value>, Map>(); |
---|
| 1391 | _reader_bits::MapStorageBase<Edge>* storage = |
---|
| 1392 | new _reader_bits::MapStorage<Edge, Map>(map); |
---|
| 1393 | _edge_maps.push_back(std::make_pair(caption, storage)); |
---|
| 1394 | return *this; |
---|
| 1395 | } |
---|
| 1396 | |
---|
| 1397 | /// \brief Edge map reading rule |
---|
| 1398 | /// |
---|
| 1399 | /// Add an edge map reading rule with specialized converter to the |
---|
| 1400 | /// reader. |
---|
| 1401 | template <typename Map, typename Converter> |
---|
| 1402 | GraphReader& edgeMap(const std::string& caption, Map& map, |
---|
| 1403 | const Converter& converter = Converter()) { |
---|
| 1404 | checkConcept<concepts::WriteMap<Edge, typename Map::Value>, Map>(); |
---|
| 1405 | _reader_bits::MapStorageBase<Edge>* storage = |
---|
| 1406 | new _reader_bits::MapStorage<Edge, Map, Converter>(map, converter); |
---|
| 1407 | _edge_maps.push_back(std::make_pair(caption, storage)); |
---|
| 1408 | return *this; |
---|
| 1409 | } |
---|
| 1410 | |
---|
| 1411 | /// \brief Arc map reading rule |
---|
| 1412 | /// |
---|
| 1413 | /// Add an arc map reading rule to the reader. |
---|
| 1414 | template <typename Map> |
---|
| 1415 | GraphReader& arcMap(const std::string& caption, Map& map) { |
---|
| 1416 | checkConcept<concepts::WriteMap<Arc, typename Map::Value>, Map>(); |
---|
| 1417 | _reader_bits::MapStorageBase<Edge>* forward_storage = |
---|
| 1418 | new _reader_bits::GraphArcMapStorage<Graph, true, Map>(_graph, map); |
---|
| 1419 | _edge_maps.push_back(std::make_pair('+' + caption, forward_storage)); |
---|
| 1420 | _reader_bits::MapStorageBase<Edge>* backward_storage = |
---|
| 1421 | new _reader_bits::GraphArcMapStorage<Graph, false, Map>(_graph, map); |
---|
| 1422 | _edge_maps.push_back(std::make_pair('-' + caption, backward_storage)); |
---|
| 1423 | return *this; |
---|
| 1424 | } |
---|
| 1425 | |
---|
| 1426 | /// \brief Arc map reading rule |
---|
| 1427 | /// |
---|
| 1428 | /// Add an arc map reading rule with specialized converter to the |
---|
| 1429 | /// reader. |
---|
| 1430 | template <typename Map, typename Converter> |
---|
| 1431 | GraphReader& arcMap(const std::string& caption, Map& map, |
---|
| 1432 | const Converter& converter = Converter()) { |
---|
| 1433 | checkConcept<concepts::WriteMap<Arc, typename Map::Value>, Map>(); |
---|
| 1434 | _reader_bits::MapStorageBase<Edge>* forward_storage = |
---|
| 1435 | new _reader_bits::GraphArcMapStorage<Graph, true, Map, Converter> |
---|
| 1436 | (_graph, map, converter); |
---|
| 1437 | _edge_maps.push_back(std::make_pair('+' + caption, forward_storage)); |
---|
| 1438 | _reader_bits::MapStorageBase<Edge>* backward_storage = |
---|
| 1439 | new _reader_bits::GraphArcMapStorage<Graph, false, Map, Converter> |
---|
| 1440 | (_graph, map, converter); |
---|
| 1441 | _edge_maps.push_back(std::make_pair('-' + caption, backward_storage)); |
---|
| 1442 | return *this; |
---|
| 1443 | } |
---|
| 1444 | |
---|
| 1445 | /// \brief Attribute reading rule |
---|
| 1446 | /// |
---|
| 1447 | /// Add an attribute reading rule to the reader. |
---|
| 1448 | template <typename Value> |
---|
| 1449 | GraphReader& attribute(const std::string& caption, Value& value) { |
---|
| 1450 | _reader_bits::ValueStorageBase* storage = |
---|
| 1451 | new _reader_bits::ValueStorage<Value>(value); |
---|
| 1452 | _attributes.insert(std::make_pair(caption, storage)); |
---|
| 1453 | return *this; |
---|
| 1454 | } |
---|
| 1455 | |
---|
| 1456 | /// \brief Attribute reading rule |
---|
| 1457 | /// |
---|
| 1458 | /// Add an attribute reading rule with specialized converter to the |
---|
| 1459 | /// reader. |
---|
| 1460 | template <typename Value, typename Converter> |
---|
| 1461 | GraphReader& attribute(const std::string& caption, Value& value, |
---|
| 1462 | const Converter& converter = Converter()) { |
---|
| 1463 | _reader_bits::ValueStorageBase* storage = |
---|
| 1464 | new _reader_bits::ValueStorage<Value, Converter>(value, converter); |
---|
| 1465 | _attributes.insert(std::make_pair(caption, storage)); |
---|
| 1466 | return *this; |
---|
| 1467 | } |
---|
| 1468 | |
---|
| 1469 | /// \brief Node reading rule |
---|
| 1470 | /// |
---|
| 1471 | /// Add a node reading rule to reader. |
---|
| 1472 | GraphReader& node(const std::string& caption, Node& node) { |
---|
| 1473 | typedef _reader_bits::MapLookUpConverter<Node> Converter; |
---|
| 1474 | Converter converter(_node_index); |
---|
| 1475 | _reader_bits::ValueStorageBase* storage = |
---|
| 1476 | new _reader_bits::ValueStorage<Node, Converter>(node, converter); |
---|
| 1477 | _attributes.insert(std::make_pair(caption, storage)); |
---|
| 1478 | return *this; |
---|
| 1479 | } |
---|
| 1480 | |
---|
| 1481 | /// \brief Edge reading rule |
---|
| 1482 | /// |
---|
| 1483 | /// Add an edge reading rule to reader. |
---|
| 1484 | GraphReader& edge(const std::string& caption, Edge& edge) { |
---|
| 1485 | typedef _reader_bits::MapLookUpConverter<Edge> Converter; |
---|
| 1486 | Converter converter(_edge_index); |
---|
| 1487 | _reader_bits::ValueStorageBase* storage = |
---|
| 1488 | new _reader_bits::ValueStorage<Edge, Converter>(edge, converter); |
---|
| 1489 | _attributes.insert(std::make_pair(caption, storage)); |
---|
| 1490 | return *this; |
---|
| 1491 | } |
---|
| 1492 | |
---|
| 1493 | /// \brief Arc reading rule |
---|
| 1494 | /// |
---|
| 1495 | /// Add an arc reading rule to reader. |
---|
| 1496 | GraphReader& arc(const std::string& caption, Arc& arc) { |
---|
| 1497 | typedef _reader_bits::GraphArcLookUpConverter<Graph> Converter; |
---|
| 1498 | Converter converter(_graph, _edge_index); |
---|
| 1499 | _reader_bits::ValueStorageBase* storage = |
---|
| 1500 | new _reader_bits::ValueStorage<Arc, Converter>(arc, converter); |
---|
| 1501 | _attributes.insert(std::make_pair(caption, storage)); |
---|
| 1502 | return *this; |
---|
| 1503 | } |
---|
| 1504 | |
---|
| 1505 | /// @} |
---|
| 1506 | |
---|
| 1507 | /// \name Select section by name |
---|
| 1508 | /// @{ |
---|
| 1509 | |
---|
| 1510 | /// \brief Set \c \@nodes section to be read |
---|
| 1511 | /// |
---|
[192] | 1512 | /// Set \c \@nodes section to be read. |
---|
[165] | 1513 | GraphReader& nodes(const std::string& caption) { |
---|
| 1514 | _nodes_caption = caption; |
---|
| 1515 | return *this; |
---|
| 1516 | } |
---|
| 1517 | |
---|
| 1518 | /// \brief Set \c \@edges section to be read |
---|
| 1519 | /// |
---|
[192] | 1520 | /// Set \c \@edges section to be read. |
---|
[165] | 1521 | GraphReader& edges(const std::string& caption) { |
---|
| 1522 | _edges_caption = caption; |
---|
| 1523 | return *this; |
---|
| 1524 | } |
---|
| 1525 | |
---|
| 1526 | /// \brief Set \c \@attributes section to be read |
---|
| 1527 | /// |
---|
[192] | 1528 | /// Set \c \@attributes section to be read. |
---|
[165] | 1529 | GraphReader& attributes(const std::string& caption) { |
---|
| 1530 | _attributes_caption = caption; |
---|
| 1531 | return *this; |
---|
| 1532 | } |
---|
| 1533 | |
---|
| 1534 | /// @} |
---|
| 1535 | |
---|
| 1536 | /// \name Using previously constructed node or edge set |
---|
| 1537 | /// @{ |
---|
| 1538 | |
---|
| 1539 | /// \brief Use previously constructed node set |
---|
| 1540 | /// |
---|
| 1541 | /// Use previously constructed node set, and specify the node |
---|
| 1542 | /// label map. |
---|
| 1543 | template <typename Map> |
---|
| 1544 | GraphReader& useNodes(const Map& map) { |
---|
| 1545 | checkConcept<concepts::ReadMap<Node, typename Map::Value>, Map>(); |
---|
| 1546 | LEMON_ASSERT(!_use_nodes, "Multiple usage of useNodes() member"); |
---|
| 1547 | _use_nodes = true; |
---|
| 1548 | _writer_bits::DefaultConverter<typename Map::Value> converter; |
---|
| 1549 | for (NodeIt n(_graph); n != INVALID; ++n) { |
---|
| 1550 | _node_index.insert(std::make_pair(converter(map[n]), n)); |
---|
| 1551 | } |
---|
| 1552 | return *this; |
---|
| 1553 | } |
---|
| 1554 | |
---|
| 1555 | /// \brief Use previously constructed node set |
---|
| 1556 | /// |
---|
| 1557 | /// Use previously constructed node set, and specify the node |
---|
| 1558 | /// label map and a functor which converts the label map values to |
---|
[192] | 1559 | /// \c std::string. |
---|
[165] | 1560 | template <typename Map, typename Converter> |
---|
| 1561 | GraphReader& useNodes(const Map& map, |
---|
| 1562 | const Converter& converter = Converter()) { |
---|
| 1563 | checkConcept<concepts::ReadMap<Node, typename Map::Value>, Map>(); |
---|
| 1564 | LEMON_ASSERT(!_use_nodes, "Multiple usage of useNodes() member"); |
---|
| 1565 | _use_nodes = true; |
---|
| 1566 | for (NodeIt n(_graph); n != INVALID; ++n) { |
---|
| 1567 | _node_index.insert(std::make_pair(converter(map[n]), n)); |
---|
| 1568 | } |
---|
| 1569 | return *this; |
---|
| 1570 | } |
---|
| 1571 | |
---|
| 1572 | /// \brief Use previously constructed edge set |
---|
| 1573 | /// |
---|
| 1574 | /// Use previously constructed edge set, and specify the edge |
---|
| 1575 | /// label map. |
---|
| 1576 | template <typename Map> |
---|
| 1577 | GraphReader& useEdges(const Map& map) { |
---|
| 1578 | checkConcept<concepts::ReadMap<Edge, typename Map::Value>, Map>(); |
---|
| 1579 | LEMON_ASSERT(!_use_edges, "Multiple usage of useEdges() member"); |
---|
| 1580 | _use_edges = true; |
---|
| 1581 | _writer_bits::DefaultConverter<typename Map::Value> converter; |
---|
| 1582 | for (EdgeIt a(_graph); a != INVALID; ++a) { |
---|
| 1583 | _edge_index.insert(std::make_pair(converter(map[a]), a)); |
---|
| 1584 | } |
---|
| 1585 | return *this; |
---|
| 1586 | } |
---|
| 1587 | |
---|
| 1588 | /// \brief Use previously constructed edge set |
---|
| 1589 | /// |
---|
| 1590 | /// Use previously constructed edge set, and specify the edge |
---|
| 1591 | /// label map and a functor which converts the label map values to |
---|
[192] | 1592 | /// \c std::string. |
---|
[165] | 1593 | template <typename Map, typename Converter> |
---|
| 1594 | GraphReader& useEdges(const Map& map, |
---|
| 1595 | const Converter& converter = Converter()) { |
---|
| 1596 | checkConcept<concepts::ReadMap<Edge, typename Map::Value>, Map>(); |
---|
| 1597 | LEMON_ASSERT(!_use_edges, "Multiple usage of useEdges() member"); |
---|
| 1598 | _use_edges = true; |
---|
| 1599 | for (EdgeIt a(_graph); a != INVALID; ++a) { |
---|
| 1600 | _edge_index.insert(std::make_pair(converter(map[a]), a)); |
---|
| 1601 | } |
---|
| 1602 | return *this; |
---|
| 1603 | } |
---|
| 1604 | |
---|
[192] | 1605 | /// \brief Skip the reading of node section |
---|
[188] | 1606 | /// |
---|
| 1607 | /// Omit the reading of the node section. This implies that each node |
---|
[192] | 1608 | /// map reading rule will be abandoned, and the nodes of the graph |
---|
[188] | 1609 | /// will not be constructed, which usually cause that the edge set |
---|
| 1610 | /// could not be read due to lack of node name |
---|
[192] | 1611 | /// could not be read due to lack of node name resolving. |
---|
| 1612 | /// Therefore \c skipEdges() function should also be used, or |
---|
| 1613 | /// \c useNodes() should be used to specify the label of the nodes. |
---|
[188] | 1614 | GraphReader& skipNodes() { |
---|
| 1615 | LEMON_ASSERT(!_skip_nodes, "Skip nodes already set"); |
---|
| 1616 | _skip_nodes = true; |
---|
| 1617 | return *this; |
---|
| 1618 | } |
---|
| 1619 | |
---|
[192] | 1620 | /// \brief Skip the reading of edge section |
---|
[188] | 1621 | /// |
---|
| 1622 | /// Omit the reading of the edge section. This implies that each edge |
---|
[192] | 1623 | /// map reading rule will be abandoned, and the edges of the graph |
---|
[188] | 1624 | /// will not be constructed. |
---|
| 1625 | GraphReader& skipEdges() { |
---|
| 1626 | LEMON_ASSERT(!_skip_edges, "Skip edges already set"); |
---|
| 1627 | _skip_edges = true; |
---|
| 1628 | return *this; |
---|
| 1629 | } |
---|
| 1630 | |
---|
[165] | 1631 | /// @} |
---|
| 1632 | |
---|
| 1633 | private: |
---|
| 1634 | |
---|
| 1635 | bool readLine() { |
---|
| 1636 | std::string str; |
---|
| 1637 | while(++line_num, std::getline(*_is, str)) { |
---|
| 1638 | line.clear(); line.str(str); |
---|
| 1639 | char c; |
---|
| 1640 | if (line >> std::ws >> c && c != '#') { |
---|
| 1641 | line.putback(c); |
---|
| 1642 | return true; |
---|
| 1643 | } |
---|
| 1644 | } |
---|
| 1645 | return false; |
---|
| 1646 | } |
---|
| 1647 | |
---|
| 1648 | bool readSuccess() { |
---|
| 1649 | return static_cast<bool>(*_is); |
---|
| 1650 | } |
---|
| 1651 | |
---|
| 1652 | void skipSection() { |
---|
| 1653 | char c; |
---|
| 1654 | while (readSuccess() && line >> c && c != '@') { |
---|
| 1655 | readLine(); |
---|
| 1656 | } |
---|
| 1657 | line.putback(c); |
---|
| 1658 | } |
---|
| 1659 | |
---|
| 1660 | void readNodes() { |
---|
| 1661 | |
---|
| 1662 | std::vector<int> map_index(_node_maps.size()); |
---|
| 1663 | int map_num, label_index; |
---|
| 1664 | |
---|
[186] | 1665 | char c; |
---|
| 1666 | if (!readLine() || !(line >> c) || c == '@') { |
---|
| 1667 | if (readSuccess() && line) line.putback(c); |
---|
| 1668 | if (!_node_maps.empty()) |
---|
| 1669 | throw DataFormatError("Cannot find map names"); |
---|
| 1670 | return; |
---|
| 1671 | } |
---|
| 1672 | line.putback(c); |
---|
[165] | 1673 | |
---|
| 1674 | { |
---|
| 1675 | std::map<std::string, int> maps; |
---|
| 1676 | |
---|
| 1677 | std::string map; |
---|
| 1678 | int index = 0; |
---|
| 1679 | while (_reader_bits::readToken(line, map)) { |
---|
| 1680 | if (maps.find(map) != maps.end()) { |
---|
| 1681 | std::ostringstream msg; |
---|
| 1682 | msg << "Multiple occurence of node map: " << map; |
---|
| 1683 | throw DataFormatError(msg.str().c_str()); |
---|
| 1684 | } |
---|
| 1685 | maps.insert(std::make_pair(map, index)); |
---|
| 1686 | ++index; |
---|
| 1687 | } |
---|
| 1688 | |
---|
| 1689 | for (int i = 0; i < static_cast<int>(_node_maps.size()); ++i) { |
---|
| 1690 | std::map<std::string, int>::iterator jt = |
---|
| 1691 | maps.find(_node_maps[i].first); |
---|
| 1692 | if (jt == maps.end()) { |
---|
| 1693 | std::ostringstream msg; |
---|
| 1694 | msg << "Map not found in file: " << _node_maps[i].first; |
---|
| 1695 | throw DataFormatError(msg.str().c_str()); |
---|
| 1696 | } |
---|
| 1697 | map_index[i] = jt->second; |
---|
| 1698 | } |
---|
| 1699 | |
---|
| 1700 | { |
---|
| 1701 | std::map<std::string, int>::iterator jt = maps.find("label"); |
---|
[186] | 1702 | if (jt != maps.end()) { |
---|
| 1703 | label_index = jt->second; |
---|
| 1704 | } else { |
---|
| 1705 | label_index = -1; |
---|
| 1706 | } |
---|
[165] | 1707 | } |
---|
| 1708 | map_num = maps.size(); |
---|
| 1709 | } |
---|
| 1710 | |
---|
| 1711 | while (readLine() && line >> c && c != '@') { |
---|
| 1712 | line.putback(c); |
---|
| 1713 | |
---|
| 1714 | std::vector<std::string> tokens(map_num); |
---|
| 1715 | for (int i = 0; i < map_num; ++i) { |
---|
| 1716 | if (!_reader_bits::readToken(line, tokens[i])) { |
---|
| 1717 | std::ostringstream msg; |
---|
| 1718 | msg << "Column not found (" << i + 1 << ")"; |
---|
| 1719 | throw DataFormatError(msg.str().c_str()); |
---|
| 1720 | } |
---|
| 1721 | } |
---|
| 1722 | if (line >> std::ws >> c) |
---|
| 1723 | throw DataFormatError("Extra character on the end of line"); |
---|
| 1724 | |
---|
| 1725 | Node n; |
---|
| 1726 | if (!_use_nodes) { |
---|
| 1727 | n = _graph.addNode(); |
---|
[186] | 1728 | if (label_index != -1) |
---|
| 1729 | _node_index.insert(std::make_pair(tokens[label_index], n)); |
---|
[165] | 1730 | } else { |
---|
[186] | 1731 | if (label_index == -1) |
---|
| 1732 | throw DataFormatError("Label map not found in file"); |
---|
[165] | 1733 | typename std::map<std::string, Node>::iterator it = |
---|
| 1734 | _node_index.find(tokens[label_index]); |
---|
| 1735 | if (it == _node_index.end()) { |
---|
| 1736 | std::ostringstream msg; |
---|
| 1737 | msg << "Node with label not found: " << tokens[label_index]; |
---|
| 1738 | throw DataFormatError(msg.str().c_str()); |
---|
| 1739 | } |
---|
| 1740 | n = it->second; |
---|
| 1741 | } |
---|
| 1742 | |
---|
| 1743 | for (int i = 0; i < static_cast<int>(_node_maps.size()); ++i) { |
---|
| 1744 | _node_maps[i].second->set(n, tokens[map_index[i]]); |
---|
| 1745 | } |
---|
| 1746 | |
---|
| 1747 | } |
---|
| 1748 | if (readSuccess()) { |
---|
| 1749 | line.putback(c); |
---|
| 1750 | } |
---|
| 1751 | } |
---|
| 1752 | |
---|
| 1753 | void readEdges() { |
---|
| 1754 | |
---|
| 1755 | std::vector<int> map_index(_edge_maps.size()); |
---|
| 1756 | int map_num, label_index; |
---|
| 1757 | |
---|
[186] | 1758 | char c; |
---|
| 1759 | if (!readLine() || !(line >> c) || c == '@') { |
---|
| 1760 | if (readSuccess() && line) line.putback(c); |
---|
| 1761 | if (!_edge_maps.empty()) |
---|
| 1762 | throw DataFormatError("Cannot find map names"); |
---|
| 1763 | return; |
---|
| 1764 | } |
---|
| 1765 | line.putback(c); |
---|
[165] | 1766 | |
---|
| 1767 | { |
---|
| 1768 | std::map<std::string, int> maps; |
---|
| 1769 | |
---|
| 1770 | std::string map; |
---|
| 1771 | int index = 0; |
---|
| 1772 | while (_reader_bits::readToken(line, map)) { |
---|
| 1773 | if (maps.find(map) != maps.end()) { |
---|
| 1774 | std::ostringstream msg; |
---|
| 1775 | msg << "Multiple occurence of edge map: " << map; |
---|
| 1776 | throw DataFormatError(msg.str().c_str()); |
---|
| 1777 | } |
---|
| 1778 | maps.insert(std::make_pair(map, index)); |
---|
| 1779 | ++index; |
---|
| 1780 | } |
---|
| 1781 | |
---|
| 1782 | for (int i = 0; i < static_cast<int>(_edge_maps.size()); ++i) { |
---|
| 1783 | std::map<std::string, int>::iterator jt = |
---|
| 1784 | maps.find(_edge_maps[i].first); |
---|
| 1785 | if (jt == maps.end()) { |
---|
| 1786 | std::ostringstream msg; |
---|
| 1787 | msg << "Map not found in file: " << _edge_maps[i].first; |
---|
| 1788 | throw DataFormatError(msg.str().c_str()); |
---|
| 1789 | } |
---|
| 1790 | map_index[i] = jt->second; |
---|
| 1791 | } |
---|
| 1792 | |
---|
| 1793 | { |
---|
| 1794 | std::map<std::string, int>::iterator jt = maps.find("label"); |
---|
[186] | 1795 | if (jt != maps.end()) { |
---|
| 1796 | label_index = jt->second; |
---|
| 1797 | } else { |
---|
| 1798 | label_index = -1; |
---|
| 1799 | } |
---|
[165] | 1800 | } |
---|
| 1801 | map_num = maps.size(); |
---|
| 1802 | } |
---|
| 1803 | |
---|
| 1804 | while (readLine() && line >> c && c != '@') { |
---|
| 1805 | line.putback(c); |
---|
| 1806 | |
---|
| 1807 | std::string source_token; |
---|
| 1808 | std::string target_token; |
---|
| 1809 | |
---|
| 1810 | if (!_reader_bits::readToken(line, source_token)) |
---|
[186] | 1811 | throw DataFormatError("Node u not found"); |
---|
[165] | 1812 | |
---|
| 1813 | if (!_reader_bits::readToken(line, target_token)) |
---|
[186] | 1814 | throw DataFormatError("Node v not found"); |
---|
[165] | 1815 | |
---|
| 1816 | std::vector<std::string> tokens(map_num); |
---|
| 1817 | for (int i = 0; i < map_num; ++i) { |
---|
| 1818 | if (!_reader_bits::readToken(line, tokens[i])) { |
---|
| 1819 | std::ostringstream msg; |
---|
| 1820 | msg << "Column not found (" << i + 1 << ")"; |
---|
| 1821 | throw DataFormatError(msg.str().c_str()); |
---|
| 1822 | } |
---|
| 1823 | } |
---|
| 1824 | if (line >> std::ws >> c) |
---|
| 1825 | throw DataFormatError("Extra character on the end of line"); |
---|
| 1826 | |
---|
| 1827 | Edge e; |
---|
| 1828 | if (!_use_edges) { |
---|
| 1829 | |
---|
| 1830 | typename NodeIndex::iterator it; |
---|
| 1831 | |
---|
| 1832 | it = _node_index.find(source_token); |
---|
| 1833 | if (it == _node_index.end()) { |
---|
| 1834 | std::ostringstream msg; |
---|
| 1835 | msg << "Item not found: " << source_token; |
---|
| 1836 | throw DataFormatError(msg.str().c_str()); |
---|
| 1837 | } |
---|
| 1838 | Node source = it->second; |
---|
| 1839 | |
---|
| 1840 | it = _node_index.find(target_token); |
---|
| 1841 | if (it == _node_index.end()) { |
---|
| 1842 | std::ostringstream msg; |
---|
| 1843 | msg << "Item not found: " << target_token; |
---|
| 1844 | throw DataFormatError(msg.str().c_str()); |
---|
| 1845 | } |
---|
| 1846 | Node target = it->second; |
---|
| 1847 | |
---|
| 1848 | e = _graph.addEdge(source, target); |
---|
[186] | 1849 | if (label_index != -1) |
---|
| 1850 | _edge_index.insert(std::make_pair(tokens[label_index], e)); |
---|
[165] | 1851 | } else { |
---|
[186] | 1852 | if (label_index == -1) |
---|
| 1853 | throw DataFormatError("Label map not found in file"); |
---|
[165] | 1854 | typename std::map<std::string, Edge>::iterator it = |
---|
| 1855 | _edge_index.find(tokens[label_index]); |
---|
| 1856 | if (it == _edge_index.end()) { |
---|
| 1857 | std::ostringstream msg; |
---|
| 1858 | msg << "Edge with label not found: " << tokens[label_index]; |
---|
| 1859 | throw DataFormatError(msg.str().c_str()); |
---|
| 1860 | } |
---|
| 1861 | e = it->second; |
---|
| 1862 | } |
---|
| 1863 | |
---|
| 1864 | for (int i = 0; i < static_cast<int>(_edge_maps.size()); ++i) { |
---|
| 1865 | _edge_maps[i].second->set(e, tokens[map_index[i]]); |
---|
| 1866 | } |
---|
| 1867 | |
---|
| 1868 | } |
---|
| 1869 | if (readSuccess()) { |
---|
| 1870 | line.putback(c); |
---|
| 1871 | } |
---|
| 1872 | } |
---|
| 1873 | |
---|
| 1874 | void readAttributes() { |
---|
| 1875 | |
---|
| 1876 | std::set<std::string> read_attr; |
---|
| 1877 | |
---|
| 1878 | char c; |
---|
| 1879 | while (readLine() && line >> c && c != '@') { |
---|
| 1880 | line.putback(c); |
---|
| 1881 | |
---|
| 1882 | std::string attr, token; |
---|
| 1883 | if (!_reader_bits::readToken(line, attr)) |
---|
| 1884 | throw DataFormatError("Attribute name not found"); |
---|
| 1885 | if (!_reader_bits::readToken(line, token)) |
---|
| 1886 | throw DataFormatError("Attribute value not found"); |
---|
| 1887 | if (line >> c) |
---|
| 1888 | throw DataFormatError("Extra character on the end of line"); |
---|
| 1889 | |
---|
| 1890 | { |
---|
| 1891 | std::set<std::string>::iterator it = read_attr.find(attr); |
---|
| 1892 | if (it != read_attr.end()) { |
---|
| 1893 | std::ostringstream msg; |
---|
| 1894 | msg << "Multiple occurence of attribute " << attr; |
---|
| 1895 | throw DataFormatError(msg.str().c_str()); |
---|
| 1896 | } |
---|
| 1897 | read_attr.insert(attr); |
---|
| 1898 | } |
---|
| 1899 | |
---|
| 1900 | { |
---|
| 1901 | typename Attributes::iterator it = _attributes.lower_bound(attr); |
---|
| 1902 | while (it != _attributes.end() && it->first == attr) { |
---|
| 1903 | it->second->set(token); |
---|
| 1904 | ++it; |
---|
| 1905 | } |
---|
| 1906 | } |
---|
| 1907 | |
---|
| 1908 | } |
---|
| 1909 | if (readSuccess()) { |
---|
| 1910 | line.putback(c); |
---|
| 1911 | } |
---|
| 1912 | for (typename Attributes::iterator it = _attributes.begin(); |
---|
| 1913 | it != _attributes.end(); ++it) { |
---|
| 1914 | if (read_attr.find(it->first) == read_attr.end()) { |
---|
| 1915 | std::ostringstream msg; |
---|
| 1916 | msg << "Attribute not found in file: " << it->first; |
---|
| 1917 | throw DataFormatError(msg.str().c_str()); |
---|
| 1918 | } |
---|
| 1919 | } |
---|
| 1920 | } |
---|
| 1921 | |
---|
| 1922 | public: |
---|
| 1923 | |
---|
| 1924 | /// \name Execution of the reader |
---|
| 1925 | /// @{ |
---|
| 1926 | |
---|
| 1927 | /// \brief Start the batch processing |
---|
| 1928 | /// |
---|
| 1929 | /// This function starts the batch processing |
---|
| 1930 | void run() { |
---|
| 1931 | |
---|
| 1932 | LEMON_ASSERT(_is != 0, "This reader assigned to an other reader"); |
---|
| 1933 | |
---|
[188] | 1934 | bool nodes_done = _skip_nodes; |
---|
| 1935 | bool edges_done = _skip_edges; |
---|
[165] | 1936 | bool attributes_done = false; |
---|
| 1937 | |
---|
| 1938 | line_num = 0; |
---|
| 1939 | readLine(); |
---|
[172] | 1940 | skipSection(); |
---|
[165] | 1941 | |
---|
| 1942 | while (readSuccess()) { |
---|
| 1943 | try { |
---|
| 1944 | char c; |
---|
| 1945 | std::string section, caption; |
---|
| 1946 | line >> c; |
---|
| 1947 | _reader_bits::readToken(line, section); |
---|
| 1948 | _reader_bits::readToken(line, caption); |
---|
| 1949 | |
---|
| 1950 | if (line >> c) |
---|
| 1951 | throw DataFormatError("Extra character on the end of line"); |
---|
| 1952 | |
---|
| 1953 | if (section == "nodes" && !nodes_done) { |
---|
| 1954 | if (_nodes_caption.empty() || _nodes_caption == caption) { |
---|
| 1955 | readNodes(); |
---|
| 1956 | nodes_done = true; |
---|
| 1957 | } |
---|
| 1958 | } else if ((section == "edges" || section == "arcs") && |
---|
| 1959 | !edges_done) { |
---|
| 1960 | if (_edges_caption.empty() || _edges_caption == caption) { |
---|
| 1961 | readEdges(); |
---|
| 1962 | edges_done = true; |
---|
| 1963 | } |
---|
| 1964 | } else if (section == "attributes" && !attributes_done) { |
---|
| 1965 | if (_attributes_caption.empty() || _attributes_caption == caption) { |
---|
| 1966 | readAttributes(); |
---|
| 1967 | attributes_done = true; |
---|
| 1968 | } |
---|
| 1969 | } else { |
---|
[172] | 1970 | readLine(); |
---|
| 1971 | skipSection(); |
---|
[165] | 1972 | } |
---|
| 1973 | } catch (DataFormatError& error) { |
---|
| 1974 | error.line(line_num); |
---|
| 1975 | throw; |
---|
| 1976 | } |
---|
| 1977 | } |
---|
| 1978 | |
---|
| 1979 | if (!nodes_done) { |
---|
| 1980 | throw DataFormatError("Section @nodes not found"); |
---|
| 1981 | } |
---|
| 1982 | |
---|
| 1983 | if (!edges_done) { |
---|
| 1984 | throw DataFormatError("Section @edges not found"); |
---|
| 1985 | } |
---|
| 1986 | |
---|
| 1987 | if (!attributes_done && !_attributes.empty()) { |
---|
| 1988 | throw DataFormatError("Section @attributes not found"); |
---|
| 1989 | } |
---|
| 1990 | |
---|
| 1991 | } |
---|
| 1992 | |
---|
| 1993 | /// @} |
---|
| 1994 | |
---|
| 1995 | }; |
---|
| 1996 | |
---|
[192] | 1997 | /// \brief Return a \ref GraphReader class |
---|
| 1998 | /// |
---|
| 1999 | /// This function just returns a \ref GraphReader class. |
---|
[165] | 2000 | /// \relates GraphReader |
---|
| 2001 | template <typename Graph> |
---|
| 2002 | GraphReader<Graph> graphReader(std::istream& is, Graph& graph) { |
---|
| 2003 | GraphReader<Graph> tmp(is, graph); |
---|
| 2004 | return tmp; |
---|
| 2005 | } |
---|
| 2006 | |
---|
[192] | 2007 | /// \brief Return a \ref GraphReader class |
---|
| 2008 | /// |
---|
| 2009 | /// This function just returns a \ref GraphReader class. |
---|
[165] | 2010 | /// \relates GraphReader |
---|
| 2011 | template <typename Graph> |
---|
| 2012 | GraphReader<Graph> graphReader(const std::string& fn, |
---|
| 2013 | Graph& graph) { |
---|
| 2014 | GraphReader<Graph> tmp(fn, graph); |
---|
| 2015 | return tmp; |
---|
| 2016 | } |
---|
| 2017 | |
---|
[192] | 2018 | /// \brief Return a \ref GraphReader class |
---|
| 2019 | /// |
---|
| 2020 | /// This function just returns a \ref GraphReader class. |
---|
[165] | 2021 | /// \relates GraphReader |
---|
| 2022 | template <typename Graph> |
---|
| 2023 | GraphReader<Graph> graphReader(const char* fn, Graph& graph) { |
---|
| 2024 | GraphReader<Graph> tmp(fn, graph); |
---|
| 2025 | return tmp; |
---|
| 2026 | } |
---|
[173] | 2027 | |
---|
[190] | 2028 | class SectionReader; |
---|
| 2029 | |
---|
| 2030 | SectionReader sectionReader(std::istream& is); |
---|
| 2031 | SectionReader sectionReader(const std::string& fn); |
---|
| 2032 | SectionReader sectionReader(const char* fn); |
---|
| 2033 | |
---|
[192] | 2034 | /// \ingroup lemon_io |
---|
| 2035 | /// |
---|
[189] | 2036 | /// \brief Section reader class |
---|
| 2037 | /// |
---|
[192] | 2038 | /// In the \ref lgf-format "LGF" file extra sections can be placed, |
---|
| 2039 | /// which contain any data in arbitrary format. Such sections can be |
---|
| 2040 | /// read with this class. A reading rule can be added to the class |
---|
| 2041 | /// with two different functions. With the \c sectionLines() function a |
---|
| 2042 | /// functor can process the section line-by-line, while with the \c |
---|
[189] | 2043 | /// sectionStream() member the section can be read from an input |
---|
| 2044 | /// stream. |
---|
| 2045 | class SectionReader { |
---|
| 2046 | private: |
---|
| 2047 | |
---|
| 2048 | std::istream* _is; |
---|
| 2049 | bool local_is; |
---|
| 2050 | |
---|
| 2051 | typedef std::map<std::string, _reader_bits::Section*> Sections; |
---|
| 2052 | Sections _sections; |
---|
| 2053 | |
---|
| 2054 | int line_num; |
---|
| 2055 | std::istringstream line; |
---|
| 2056 | |
---|
| 2057 | public: |
---|
| 2058 | |
---|
| 2059 | /// \brief Constructor |
---|
| 2060 | /// |
---|
| 2061 | /// Construct a section reader, which reads from the given input |
---|
| 2062 | /// stream. |
---|
| 2063 | SectionReader(std::istream& is) |
---|
| 2064 | : _is(&is), local_is(false) {} |
---|
| 2065 | |
---|
| 2066 | /// \brief Constructor |
---|
| 2067 | /// |
---|
| 2068 | /// Construct a section reader, which reads from the given file. |
---|
| 2069 | SectionReader(const std::string& fn) |
---|
| 2070 | : _is(new std::ifstream(fn.c_str())), local_is(true) {} |
---|
| 2071 | |
---|
| 2072 | /// \brief Constructor |
---|
| 2073 | /// |
---|
| 2074 | /// Construct a section reader, which reads from the given file. |
---|
| 2075 | SectionReader(const char* fn) |
---|
| 2076 | : _is(new std::ifstream(fn)), local_is(true) {} |
---|
| 2077 | |
---|
| 2078 | /// \brief Destructor |
---|
| 2079 | ~SectionReader() { |
---|
| 2080 | for (Sections::iterator it = _sections.begin(); |
---|
| 2081 | it != _sections.end(); ++it) { |
---|
| 2082 | delete it->second; |
---|
| 2083 | } |
---|
| 2084 | |
---|
| 2085 | if (local_is) { |
---|
| 2086 | delete _is; |
---|
| 2087 | } |
---|
| 2088 | |
---|
| 2089 | } |
---|
| 2090 | |
---|
| 2091 | private: |
---|
[190] | 2092 | |
---|
| 2093 | friend SectionReader sectionReader(std::istream& is); |
---|
| 2094 | friend SectionReader sectionReader(const std::string& fn); |
---|
| 2095 | friend SectionReader sectionReader(const char* fn); |
---|
| 2096 | |
---|
| 2097 | SectionReader(SectionReader& other) |
---|
| 2098 | : _is(other._is), local_is(other.local_is) { |
---|
| 2099 | |
---|
| 2100 | other._is = 0; |
---|
| 2101 | other.local_is = false; |
---|
| 2102 | |
---|
| 2103 | _sections.swap(other._sections); |
---|
| 2104 | } |
---|
[189] | 2105 | |
---|
| 2106 | SectionReader& operator=(const SectionReader&); |
---|
| 2107 | |
---|
| 2108 | public: |
---|
| 2109 | |
---|
| 2110 | /// \name Section readers |
---|
| 2111 | /// @{ |
---|
| 2112 | |
---|
| 2113 | /// \brief Add a section processor with line oriented reading |
---|
| 2114 | /// |
---|
| 2115 | /// The first parameter is the type descriptor of the section, the |
---|
| 2116 | /// second is a functor, which takes just one \c std::string |
---|
| 2117 | /// parameter. At the reading process, each line of the section |
---|
| 2118 | /// will be given to the functor object. However, the empty lines |
---|
| 2119 | /// and the comment lines are filtered out, and the leading |
---|
| 2120 | /// whitespaces are trimmed from each processed string. |
---|
| 2121 | /// |
---|
| 2122 | /// For example let's see a section, which contain several |
---|
| 2123 | /// integers, which should be inserted into a vector. |
---|
| 2124 | ///\code |
---|
| 2125 | /// @numbers |
---|
| 2126 | /// 12 45 23 |
---|
| 2127 | /// 4 |
---|
| 2128 | /// 23 6 |
---|
| 2129 | ///\endcode |
---|
| 2130 | /// |
---|
[192] | 2131 | /// The functor is implemented as a struct: |
---|
[189] | 2132 | ///\code |
---|
| 2133 | /// struct NumberSection { |
---|
| 2134 | /// std::vector<int>& _data; |
---|
| 2135 | /// NumberSection(std::vector<int>& data) : _data(data) {} |
---|
| 2136 | /// void operator()(const std::string& line) { |
---|
| 2137 | /// std::istringstream ls(line); |
---|
| 2138 | /// int value; |
---|
| 2139 | /// while (ls >> value) _data.push_back(value); |
---|
| 2140 | /// } |
---|
| 2141 | /// }; |
---|
| 2142 | /// |
---|
| 2143 | /// // ... |
---|
| 2144 | /// |
---|
| 2145 | /// reader.sectionLines("numbers", NumberSection(vec)); |
---|
| 2146 | ///\endcode |
---|
| 2147 | template <typename Functor> |
---|
| 2148 | SectionReader& sectionLines(const std::string& type, Functor functor) { |
---|
[192] | 2149 | LEMON_ASSERT(!type.empty(), "Type is empty."); |
---|
[189] | 2150 | LEMON_ASSERT(_sections.find(type) == _sections.end(), |
---|
| 2151 | "Multiple reading of section."); |
---|
| 2152 | _sections.insert(std::make_pair(type, |
---|
| 2153 | new _reader_bits::LineSection<Functor>(functor))); |
---|
| 2154 | return *this; |
---|
| 2155 | } |
---|
| 2156 | |
---|
| 2157 | |
---|
| 2158 | /// \brief Add a section processor with stream oriented reading |
---|
| 2159 | /// |
---|
| 2160 | /// The first parameter is the type of the section, the second is |
---|
[192] | 2161 | /// a functor, which takes an \c std::istream& and an \c int& |
---|
[189] | 2162 | /// parameter, the latter regard to the line number of stream. The |
---|
| 2163 | /// functor can read the input while the section go on, and the |
---|
| 2164 | /// line number should be modified accordingly. |
---|
| 2165 | template <typename Functor> |
---|
| 2166 | SectionReader& sectionStream(const std::string& type, Functor functor) { |
---|
[192] | 2167 | LEMON_ASSERT(!type.empty(), "Type is empty."); |
---|
[189] | 2168 | LEMON_ASSERT(_sections.find(type) == _sections.end(), |
---|
| 2169 | "Multiple reading of section."); |
---|
| 2170 | _sections.insert(std::make_pair(type, |
---|
| 2171 | new _reader_bits::StreamSection<Functor>(functor))); |
---|
| 2172 | return *this; |
---|
| 2173 | } |
---|
| 2174 | |
---|
| 2175 | /// @} |
---|
| 2176 | |
---|
| 2177 | private: |
---|
| 2178 | |
---|
| 2179 | bool readLine() { |
---|
| 2180 | std::string str; |
---|
| 2181 | while(++line_num, std::getline(*_is, str)) { |
---|
| 2182 | line.clear(); line.str(str); |
---|
| 2183 | char c; |
---|
| 2184 | if (line >> std::ws >> c && c != '#') { |
---|
| 2185 | line.putback(c); |
---|
| 2186 | return true; |
---|
| 2187 | } |
---|
| 2188 | } |
---|
| 2189 | return false; |
---|
| 2190 | } |
---|
| 2191 | |
---|
| 2192 | bool readSuccess() { |
---|
| 2193 | return static_cast<bool>(*_is); |
---|
| 2194 | } |
---|
| 2195 | |
---|
| 2196 | void skipSection() { |
---|
| 2197 | char c; |
---|
| 2198 | while (readSuccess() && line >> c && c != '@') { |
---|
| 2199 | readLine(); |
---|
| 2200 | } |
---|
| 2201 | line.putback(c); |
---|
| 2202 | } |
---|
| 2203 | |
---|
| 2204 | public: |
---|
| 2205 | |
---|
| 2206 | |
---|
| 2207 | /// \name Execution of the reader |
---|
| 2208 | /// @{ |
---|
| 2209 | |
---|
| 2210 | /// \brief Start the batch processing |
---|
| 2211 | /// |
---|
[192] | 2212 | /// This function starts the batch processing. |
---|
[189] | 2213 | void run() { |
---|
| 2214 | |
---|
| 2215 | LEMON_ASSERT(_is != 0, "This reader assigned to an other reader"); |
---|
| 2216 | |
---|
| 2217 | std::set<std::string> extra_sections; |
---|
| 2218 | |
---|
| 2219 | line_num = 0; |
---|
| 2220 | readLine(); |
---|
| 2221 | skipSection(); |
---|
| 2222 | |
---|
| 2223 | while (readSuccess()) { |
---|
| 2224 | try { |
---|
| 2225 | char c; |
---|
| 2226 | std::string section, caption; |
---|
| 2227 | line >> c; |
---|
| 2228 | _reader_bits::readToken(line, section); |
---|
| 2229 | _reader_bits::readToken(line, caption); |
---|
| 2230 | |
---|
| 2231 | if (line >> c) |
---|
| 2232 | throw DataFormatError("Extra character on the end of line"); |
---|
| 2233 | |
---|
| 2234 | if (extra_sections.find(section) != extra_sections.end()) { |
---|
| 2235 | std::ostringstream msg; |
---|
| 2236 | msg << "Multiple occurence of section " << section; |
---|
| 2237 | throw DataFormatError(msg.str().c_str()); |
---|
| 2238 | } |
---|
| 2239 | Sections::iterator it = _sections.find(section); |
---|
| 2240 | if (it != _sections.end()) { |
---|
| 2241 | extra_sections.insert(section); |
---|
| 2242 | it->second->process(*_is, line_num); |
---|
| 2243 | } |
---|
| 2244 | readLine(); |
---|
| 2245 | skipSection(); |
---|
| 2246 | } catch (DataFormatError& error) { |
---|
| 2247 | error.line(line_num); |
---|
| 2248 | throw; |
---|
| 2249 | } |
---|
| 2250 | } |
---|
| 2251 | for (Sections::iterator it = _sections.begin(); |
---|
| 2252 | it != _sections.end(); ++it) { |
---|
| 2253 | if (extra_sections.find(it->first) == extra_sections.end()) { |
---|
| 2254 | std::ostringstream os; |
---|
| 2255 | os << "Cannot find section: " << it->first; |
---|
| 2256 | throw DataFormatError(os.str().c_str()); |
---|
| 2257 | } |
---|
| 2258 | } |
---|
| 2259 | } |
---|
| 2260 | |
---|
| 2261 | /// @} |
---|
| 2262 | |
---|
| 2263 | }; |
---|
| 2264 | |
---|
[192] | 2265 | /// \brief Return a \ref SectionReader class |
---|
| 2266 | /// |
---|
| 2267 | /// This function just returns a \ref SectionReader class. |
---|
[189] | 2268 | /// \relates SectionReader |
---|
| 2269 | inline SectionReader sectionReader(std::istream& is) { |
---|
| 2270 | SectionReader tmp(is); |
---|
| 2271 | return tmp; |
---|
| 2272 | } |
---|
| 2273 | |
---|
[192] | 2274 | /// \brief Return a \ref SectionReader class |
---|
| 2275 | /// |
---|
| 2276 | /// This function just returns a \ref SectionReader class. |
---|
[189] | 2277 | /// \relates SectionReader |
---|
| 2278 | inline SectionReader sectionReader(const std::string& fn) { |
---|
| 2279 | SectionReader tmp(fn); |
---|
| 2280 | return tmp; |
---|
| 2281 | } |
---|
| 2282 | |
---|
[192] | 2283 | /// \brief Return a \ref SectionReader class |
---|
| 2284 | /// |
---|
| 2285 | /// This function just returns a \ref SectionReader class. |
---|
[189] | 2286 | /// \relates SectionReader |
---|
| 2287 | inline SectionReader sectionReader(const char* fn) { |
---|
| 2288 | SectionReader tmp(fn); |
---|
| 2289 | return tmp; |
---|
| 2290 | } |
---|
| 2291 | |
---|
[173] | 2292 | /// \ingroup lemon_io |
---|
| 2293 | /// |
---|
[179] | 2294 | /// \brief Reader for the contents of the \ref lgf-format "LGF" file |
---|
[173] | 2295 | /// |
---|
| 2296 | /// This class can be used to read the sections, the map names and |
---|
| 2297 | /// the attributes from a file. Usually, the Lemon programs know |
---|
| 2298 | /// that, which type of graph, which maps and which attributes |
---|
| 2299 | /// should be read from a file, but in general tools (like glemon) |
---|
[179] | 2300 | /// the contents of an LGF file should be guessed somehow. This class |
---|
[173] | 2301 | /// reads the graph and stores the appropriate information for |
---|
| 2302 | /// reading the graph. |
---|
| 2303 | /// |
---|
[192] | 2304 | ///\code |
---|
| 2305 | /// LgfContents contents("graph.lgf"); |
---|
[179] | 2306 | /// contents.run(); |
---|
[173] | 2307 | /// |
---|
[192] | 2308 | /// // Does it contain any node section and arc section? |
---|
[179] | 2309 | /// if (contents.nodeSectionNum() == 0 || contents.arcSectionNum()) { |
---|
[192] | 2310 | /// std::cerr << "Failure, cannot find graph." << std::endl; |
---|
[173] | 2311 | /// return -1; |
---|
| 2312 | /// } |
---|
[192] | 2313 | /// std::cout << "The name of the default node section: " |
---|
[179] | 2314 | /// << contents.nodeSection(0) << std::endl; |
---|
[192] | 2315 | /// std::cout << "The number of the arc maps: " |
---|
[179] | 2316 | /// << contents.arcMaps(0).size() << std::endl; |
---|
[192] | 2317 | /// std::cout << "The name of second arc map: " |
---|
[179] | 2318 | /// << contents.arcMaps(0)[1] << std::endl; |
---|
[173] | 2319 | ///\endcode |
---|
[179] | 2320 | class LgfContents { |
---|
[173] | 2321 | private: |
---|
| 2322 | |
---|
| 2323 | std::istream* _is; |
---|
| 2324 | bool local_is; |
---|
| 2325 | |
---|
| 2326 | std::vector<std::string> _node_sections; |
---|
| 2327 | std::vector<std::string> _edge_sections; |
---|
| 2328 | std::vector<std::string> _attribute_sections; |
---|
| 2329 | std::vector<std::string> _extra_sections; |
---|
| 2330 | |
---|
| 2331 | std::vector<bool> _arc_sections; |
---|
| 2332 | |
---|
| 2333 | std::vector<std::vector<std::string> > _node_maps; |
---|
| 2334 | std::vector<std::vector<std::string> > _edge_maps; |
---|
| 2335 | |
---|
| 2336 | std::vector<std::vector<std::string> > _attributes; |
---|
| 2337 | |
---|
| 2338 | |
---|
| 2339 | int line_num; |
---|
| 2340 | std::istringstream line; |
---|
| 2341 | |
---|
| 2342 | public: |
---|
| 2343 | |
---|
| 2344 | /// \brief Constructor |
---|
| 2345 | /// |
---|
[179] | 2346 | /// Construct an \e LGF contents reader, which reads from the given |
---|
[173] | 2347 | /// input stream. |
---|
[179] | 2348 | LgfContents(std::istream& is) |
---|
[173] | 2349 | : _is(&is), local_is(false) {} |
---|
| 2350 | |
---|
| 2351 | /// \brief Constructor |
---|
| 2352 | /// |
---|
[179] | 2353 | /// Construct an \e LGF contents reader, which reads from the given |
---|
[173] | 2354 | /// file. |
---|
[179] | 2355 | LgfContents(const std::string& fn) |
---|
[173] | 2356 | : _is(new std::ifstream(fn.c_str())), local_is(true) {} |
---|
| 2357 | |
---|
| 2358 | /// \brief Constructor |
---|
| 2359 | /// |
---|
[179] | 2360 | /// Construct an \e LGF contents reader, which reads from the given |
---|
[173] | 2361 | /// file. |
---|
[179] | 2362 | LgfContents(const char* fn) |
---|
[173] | 2363 | : _is(new std::ifstream(fn)), local_is(true) {} |
---|
| 2364 | |
---|
| 2365 | /// \brief Destructor |
---|
[179] | 2366 | ~LgfContents() { |
---|
[173] | 2367 | if (local_is) delete _is; |
---|
| 2368 | } |
---|
| 2369 | |
---|
[190] | 2370 | private: |
---|
| 2371 | |
---|
| 2372 | LgfContents(const LgfContents&); |
---|
| 2373 | LgfContents& operator=(const LgfContents&); |
---|
| 2374 | |
---|
| 2375 | public: |
---|
| 2376 | |
---|
[173] | 2377 | |
---|
| 2378 | /// \name Node sections |
---|
| 2379 | /// @{ |
---|
| 2380 | |
---|
| 2381 | /// \brief Gives back the number of node sections in the file. |
---|
| 2382 | /// |
---|
| 2383 | /// Gives back the number of node sections in the file. |
---|
| 2384 | int nodeSectionNum() const { |
---|
| 2385 | return _node_sections.size(); |
---|
| 2386 | } |
---|
| 2387 | |
---|
[192] | 2388 | /// \brief Returns the node section name at the given position. |
---|
[173] | 2389 | /// |
---|
[192] | 2390 | /// Returns the node section name at the given position. |
---|
[173] | 2391 | const std::string& nodeSection(int i) const { |
---|
| 2392 | return _node_sections[i]; |
---|
| 2393 | } |
---|
| 2394 | |
---|
| 2395 | /// \brief Gives back the node maps for the given section. |
---|
| 2396 | /// |
---|
| 2397 | /// Gives back the node maps for the given section. |
---|
[182] | 2398 | const std::vector<std::string>& nodeMapNames(int i) const { |
---|
[173] | 2399 | return _node_maps[i]; |
---|
| 2400 | } |
---|
| 2401 | |
---|
| 2402 | /// @} |
---|
| 2403 | |
---|
[181] | 2404 | /// \name Arc/Edge sections |
---|
[173] | 2405 | /// @{ |
---|
| 2406 | |
---|
[181] | 2407 | /// \brief Gives back the number of arc/edge sections in the file. |
---|
[173] | 2408 | /// |
---|
[181] | 2409 | /// Gives back the number of arc/edge sections in the file. |
---|
| 2410 | /// \note It is synonym of \c edgeSectionNum(). |
---|
[173] | 2411 | int arcSectionNum() const { |
---|
| 2412 | return _edge_sections.size(); |
---|
| 2413 | } |
---|
| 2414 | |
---|
[192] | 2415 | /// \brief Returns the arc/edge section name at the given position. |
---|
[173] | 2416 | /// |
---|
[192] | 2417 | /// Returns the arc/edge section name at the given position. |
---|
[181] | 2418 | /// \note It is synonym of \c edgeSection(). |
---|
[173] | 2419 | const std::string& arcSection(int i) const { |
---|
| 2420 | return _edge_sections[i]; |
---|
| 2421 | } |
---|
| 2422 | |
---|
[181] | 2423 | /// \brief Gives back the arc/edge maps for the given section. |
---|
[173] | 2424 | /// |
---|
[181] | 2425 | /// Gives back the arc/edge maps for the given section. |
---|
[182] | 2426 | /// \note It is synonym of \c edgeMapNames(). |
---|
| 2427 | const std::vector<std::string>& arcMapNames(int i) const { |
---|
[173] | 2428 | return _edge_maps[i]; |
---|
| 2429 | } |
---|
| 2430 | |
---|
| 2431 | /// @} |
---|
| 2432 | |
---|
[181] | 2433 | /// \name Synonyms |
---|
[173] | 2434 | /// @{ |
---|
| 2435 | |
---|
[181] | 2436 | /// \brief Gives back the number of arc/edge sections in the file. |
---|
[173] | 2437 | /// |
---|
[181] | 2438 | /// Gives back the number of arc/edge sections in the file. |
---|
| 2439 | /// \note It is synonym of \c arcSectionNum(). |
---|
[173] | 2440 | int edgeSectionNum() const { |
---|
| 2441 | return _edge_sections.size(); |
---|
| 2442 | } |
---|
| 2443 | |
---|
| 2444 | /// \brief Returns the section name at the given position. |
---|
| 2445 | /// |
---|
| 2446 | /// Returns the section name at the given position. |
---|
[181] | 2447 | /// \note It is synonym of \c arcSection(). |
---|
[173] | 2448 | const std::string& edgeSection(int i) const { |
---|
| 2449 | return _edge_sections[i]; |
---|
| 2450 | } |
---|
| 2451 | |
---|
| 2452 | /// \brief Gives back the edge maps for the given section. |
---|
| 2453 | /// |
---|
| 2454 | /// Gives back the edge maps for the given section. |
---|
[182] | 2455 | /// \note It is synonym of \c arcMapNames(). |
---|
| 2456 | const std::vector<std::string>& edgeMapNames(int i) const { |
---|
[173] | 2457 | return _edge_maps[i]; |
---|
| 2458 | } |
---|
| 2459 | |
---|
| 2460 | /// @} |
---|
| 2461 | |
---|
| 2462 | /// \name Attribute sections |
---|
| 2463 | /// @{ |
---|
| 2464 | |
---|
| 2465 | /// \brief Gives back the number of attribute sections in the file. |
---|
| 2466 | /// |
---|
| 2467 | /// Gives back the number of attribute sections in the file. |
---|
| 2468 | int attributeSectionNum() const { |
---|
| 2469 | return _attribute_sections.size(); |
---|
| 2470 | } |
---|
| 2471 | |
---|
[192] | 2472 | /// \brief Returns the attribute section name at the given position. |
---|
[173] | 2473 | /// |
---|
[192] | 2474 | /// Returns the attribute section name at the given position. |
---|
[182] | 2475 | const std::string& attributeSectionNames(int i) const { |
---|
[173] | 2476 | return _attribute_sections[i]; |
---|
| 2477 | } |
---|
| 2478 | |
---|
| 2479 | /// \brief Gives back the attributes for the given section. |
---|
| 2480 | /// |
---|
| 2481 | /// Gives back the attributes for the given section. |
---|
| 2482 | const std::vector<std::string>& attributes(int i) const { |
---|
| 2483 | return _attributes[i]; |
---|
| 2484 | } |
---|
| 2485 | |
---|
| 2486 | /// @} |
---|
| 2487 | |
---|
| 2488 | /// \name Extra sections |
---|
| 2489 | /// @{ |
---|
| 2490 | |
---|
| 2491 | /// \brief Gives back the number of extra sections in the file. |
---|
| 2492 | /// |
---|
| 2493 | /// Gives back the number of extra sections in the file. |
---|
| 2494 | int extraSectionNum() const { |
---|
| 2495 | return _extra_sections.size(); |
---|
| 2496 | } |
---|
| 2497 | |
---|
| 2498 | /// \brief Returns the extra section type at the given position. |
---|
| 2499 | /// |
---|
| 2500 | /// Returns the section type at the given position. |
---|
| 2501 | const std::string& extraSection(int i) const { |
---|
| 2502 | return _extra_sections[i]; |
---|
| 2503 | } |
---|
| 2504 | |
---|
| 2505 | /// @} |
---|
| 2506 | |
---|
| 2507 | private: |
---|
| 2508 | |
---|
| 2509 | bool readLine() { |
---|
| 2510 | std::string str; |
---|
| 2511 | while(++line_num, std::getline(*_is, str)) { |
---|
| 2512 | line.clear(); line.str(str); |
---|
| 2513 | char c; |
---|
| 2514 | if (line >> std::ws >> c && c != '#') { |
---|
| 2515 | line.putback(c); |
---|
| 2516 | return true; |
---|
| 2517 | } |
---|
| 2518 | } |
---|
| 2519 | return false; |
---|
| 2520 | } |
---|
| 2521 | |
---|
| 2522 | bool readSuccess() { |
---|
| 2523 | return static_cast<bool>(*_is); |
---|
| 2524 | } |
---|
| 2525 | |
---|
| 2526 | void skipSection() { |
---|
| 2527 | char c; |
---|
| 2528 | while (readSuccess() && line >> c && c != '@') { |
---|
| 2529 | readLine(); |
---|
| 2530 | } |
---|
| 2531 | line.putback(c); |
---|
| 2532 | } |
---|
| 2533 | |
---|
| 2534 | void readMaps(std::vector<std::string>& maps) { |
---|
[186] | 2535 | char c; |
---|
| 2536 | if (!readLine() || !(line >> c) || c == '@') { |
---|
| 2537 | if (readSuccess() && line) line.putback(c); |
---|
| 2538 | return; |
---|
| 2539 | } |
---|
| 2540 | line.putback(c); |
---|
[173] | 2541 | std::string map; |
---|
| 2542 | while (_reader_bits::readToken(line, map)) { |
---|
| 2543 | maps.push_back(map); |
---|
| 2544 | } |
---|
| 2545 | } |
---|
| 2546 | |
---|
| 2547 | void readAttributes(std::vector<std::string>& attrs) { |
---|
| 2548 | readLine(); |
---|
| 2549 | char c; |
---|
| 2550 | while (readSuccess() && line >> c && c != '@') { |
---|
| 2551 | line.putback(c); |
---|
| 2552 | std::string attr; |
---|
| 2553 | _reader_bits::readToken(line, attr); |
---|
| 2554 | attrs.push_back(attr); |
---|
| 2555 | readLine(); |
---|
| 2556 | } |
---|
| 2557 | line.putback(c); |
---|
| 2558 | } |
---|
| 2559 | |
---|
| 2560 | public: |
---|
| 2561 | |
---|
[179] | 2562 | /// \name Execution of the contents reader |
---|
[173] | 2563 | /// @{ |
---|
| 2564 | |
---|
[192] | 2565 | /// \brief Starts the reading |
---|
[173] | 2566 | /// |
---|
[192] | 2567 | /// This function starts the reading. |
---|
[173] | 2568 | void run() { |
---|
| 2569 | |
---|
| 2570 | readLine(); |
---|
| 2571 | skipSection(); |
---|
| 2572 | |
---|
| 2573 | while (readSuccess()) { |
---|
| 2574 | |
---|
| 2575 | char c; |
---|
| 2576 | line >> c; |
---|
| 2577 | |
---|
| 2578 | std::string section, caption; |
---|
| 2579 | _reader_bits::readToken(line, section); |
---|
| 2580 | _reader_bits::readToken(line, caption); |
---|
| 2581 | |
---|
| 2582 | if (section == "nodes") { |
---|
| 2583 | _node_sections.push_back(caption); |
---|
| 2584 | _node_maps.push_back(std::vector<std::string>()); |
---|
| 2585 | readMaps(_node_maps.back()); |
---|
| 2586 | readLine(); skipSection(); |
---|
| 2587 | } else if (section == "arcs" || section == "edges") { |
---|
| 2588 | _edge_sections.push_back(caption); |
---|
| 2589 | _arc_sections.push_back(section == "arcs"); |
---|
| 2590 | _edge_maps.push_back(std::vector<std::string>()); |
---|
| 2591 | readMaps(_edge_maps.back()); |
---|
| 2592 | readLine(); skipSection(); |
---|
| 2593 | } else if (section == "attributes") { |
---|
| 2594 | _attribute_sections.push_back(caption); |
---|
| 2595 | _attributes.push_back(std::vector<std::string>()); |
---|
| 2596 | readAttributes(_attributes.back()); |
---|
| 2597 | } else { |
---|
| 2598 | _extra_sections.push_back(section); |
---|
| 2599 | readLine(); skipSection(); |
---|
| 2600 | } |
---|
| 2601 | } |
---|
| 2602 | } |
---|
| 2603 | |
---|
| 2604 | /// @} |
---|
| 2605 | |
---|
| 2606 | }; |
---|
[127] | 2607 | } |
---|
| 2608 | |
---|
| 2609 | #endif |
---|