1 | /* -*- C++ -*- |
---|
2 | * src/lemon/graph_writer.h - Part of LEMON, a generic C++ optimization library |
---|
3 | * |
---|
4 | * Copyright (C) 2004 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
---|
5 | * (Egervary Combinatorial Optimization Research Group, EGRES). |
---|
6 | * |
---|
7 | * Permission to use, modify and distribute this software is granted |
---|
8 | * provided that this copyright notice appears in all copies. For |
---|
9 | * precise terms see the accompanying LICENSE file. |
---|
10 | * |
---|
11 | * This software is provided "AS IS" with no warranty of any kind, |
---|
12 | * express or implied, and with no claim as to its suitability for any |
---|
13 | * purpose. |
---|
14 | * |
---|
15 | */ |
---|
16 | |
---|
17 | ///\ingroup gio |
---|
18 | ///\file |
---|
19 | ///\brief Graph writer. |
---|
20 | |
---|
21 | |
---|
22 | #include <iostream> |
---|
23 | #include <sstream> |
---|
24 | |
---|
25 | #include <map> |
---|
26 | #include <vector> |
---|
27 | |
---|
28 | #include <memory> |
---|
29 | |
---|
30 | #include <lemon/invalid.h> |
---|
31 | #include <lemon/error.h> |
---|
32 | |
---|
33 | |
---|
34 | namespace lemon { |
---|
35 | |
---|
36 | /// \brief Standard WriterTraits for the GraphWriter class. |
---|
37 | /// |
---|
38 | /// Standard WriterTraits for the GraphWriter class. |
---|
39 | /// It defines standard writing method for all type of value. |
---|
40 | struct DefaultWriterTraits { |
---|
41 | |
---|
42 | /// \brief Template class for writing an value. |
---|
43 | /// |
---|
44 | /// Template class for writing an value. |
---|
45 | template <typename _Value> |
---|
46 | struct Writer { |
---|
47 | /// The value type. |
---|
48 | typedef _Value Value; |
---|
49 | |
---|
50 | /// \brief Writes a value from the given stream. |
---|
51 | /// |
---|
52 | /// Writes a value from the given stream. |
---|
53 | void write(std::ostream& os, const Value& value) { |
---|
54 | os << value << '\t'; |
---|
55 | } |
---|
56 | }; |
---|
57 | |
---|
58 | }; |
---|
59 | |
---|
60 | |
---|
61 | /// \brief Writer class for quoted strings. |
---|
62 | /// |
---|
63 | /// Writer class for quoted strings. It can process the escape |
---|
64 | /// sequences in the string. |
---|
65 | class QuotedStringWriter { |
---|
66 | public: |
---|
67 | typedef std::string Value; |
---|
68 | |
---|
69 | /// \brief Constructor for the writer. |
---|
70 | /// |
---|
71 | /// Constructor for the writer. If the given parameter is true |
---|
72 | /// the writer creates escape sequences from special characters. |
---|
73 | QuotedStringWriter(bool _escaped = true) : escaped(_escaped) {} |
---|
74 | |
---|
75 | /// \brief Writes a quoted string from the given stream. |
---|
76 | /// |
---|
77 | /// Writes a quoted string from the given stream. |
---|
78 | void write(std::ostream& os, const std::string& value) { |
---|
79 | os << "\""; |
---|
80 | if (escaped) { |
---|
81 | ostringstream ls; |
---|
82 | for (int i = 0; i < (int)value.size(); ++i) { |
---|
83 | writeEscape(ls, value[i]); |
---|
84 | } |
---|
85 | os << ls.str(); |
---|
86 | } else { |
---|
87 | os << value; |
---|
88 | } |
---|
89 | os << "\""; |
---|
90 | } |
---|
91 | |
---|
92 | private: |
---|
93 | |
---|
94 | static void writeEscape(std::ostream& os, char c) { |
---|
95 | switch (c) { |
---|
96 | case '\\': |
---|
97 | os << "\\\\"; |
---|
98 | return; |
---|
99 | case '\"': |
---|
100 | os << "\\\""; |
---|
101 | return; |
---|
102 | case '\'': |
---|
103 | os << "\\\'"; |
---|
104 | return; |
---|
105 | case '\?': |
---|
106 | os << "\\\?"; |
---|
107 | return; |
---|
108 | case '\a': |
---|
109 | os << "\\a"; |
---|
110 | return; |
---|
111 | case '\b': |
---|
112 | os << "\\b"; |
---|
113 | return; |
---|
114 | case '\f': |
---|
115 | os << "\\f"; |
---|
116 | return; |
---|
117 | case '\r': |
---|
118 | os << "\\r"; |
---|
119 | return; |
---|
120 | case '\n': |
---|
121 | os << "\\n"; |
---|
122 | return; |
---|
123 | case '\t': |
---|
124 | os << "\\t"; |
---|
125 | return; |
---|
126 | case '\v': |
---|
127 | os << "\\v"; |
---|
128 | return; |
---|
129 | default: |
---|
130 | if (c < 0x20) { |
---|
131 | os << '\\' << oct << (int)c; |
---|
132 | } else { |
---|
133 | os << c; |
---|
134 | } |
---|
135 | return; |
---|
136 | } |
---|
137 | } |
---|
138 | private: |
---|
139 | bool escaped; |
---|
140 | }; |
---|
141 | |
---|
142 | |
---|
143 | /// \brief The graph writer class. |
---|
144 | /// |
---|
145 | /// The writer class for the graph output. |
---|
146 | /// \see graph-io-page |
---|
147 | template <typename _Graph, typename _WriterTraits = DefaultWriterTraits> |
---|
148 | class GraphWriter { |
---|
149 | public: |
---|
150 | |
---|
151 | typedef _Graph Graph; |
---|
152 | typedef typename Graph::Node Node; |
---|
153 | typedef typename Graph::NodeIt NodeIt; |
---|
154 | typedef typename Graph::Edge Edge; |
---|
155 | typedef typename Graph::EdgeIt EdgeIt; |
---|
156 | |
---|
157 | typedef _WriterTraits WriterTraits; |
---|
158 | |
---|
159 | /// \brief Construct a new GraphWriter. |
---|
160 | /// |
---|
161 | /// Construct a new GraphWriter. It writes from the given map, |
---|
162 | /// it constructs the given map and it use the given writer as the |
---|
163 | /// default skipper. |
---|
164 | GraphWriter(std::ostream& _os, Graph& _graph) : os(_os), graph(_graph) {} |
---|
165 | |
---|
166 | |
---|
167 | /// \brief Destruct the graph writer. |
---|
168 | /// |
---|
169 | /// Destruct the graph writer. |
---|
170 | ~GraphWriter() { |
---|
171 | for (typename NodeMapWriters::iterator it = node_map_writers.begin(); |
---|
172 | it != node_map_writers.end(); ++it) { |
---|
173 | delete it->second; |
---|
174 | } |
---|
175 | |
---|
176 | for (typename EdgeMapWriters::iterator it = edge_map_writers.begin(); |
---|
177 | it != edge_map_writers.end(); ++it) { |
---|
178 | delete it->second; |
---|
179 | } |
---|
180 | |
---|
181 | } |
---|
182 | |
---|
183 | // Node map rules |
---|
184 | |
---|
185 | /// \brief Add a new node map writer command for the writer. |
---|
186 | /// |
---|
187 | /// Add a new node map writer command for the writer. |
---|
188 | template <typename Map> |
---|
189 | GraphWriter& addNodeMap(std::string name, const Map& map) { |
---|
190 | return addNodeMap<typename WriterTraits::template Writer< |
---|
191 | typename Map::Value>, Map>(name, map); |
---|
192 | } |
---|
193 | |
---|
194 | /// \brief Add a new node map writer command for the writer. |
---|
195 | /// |
---|
196 | /// Add a new node map writer command for the writer. |
---|
197 | template <typename Writer, typename Map> |
---|
198 | GraphWriter& addNodeMap(std::string name, const Map& map, |
---|
199 | const Writer& writer = Writer()) { |
---|
200 | node_map_writers.push_back( |
---|
201 | make_pair(name, new MapWriter<Node, Map, Writer>(map, writer))); |
---|
202 | return *this; |
---|
203 | } |
---|
204 | |
---|
205 | // Edge map rules |
---|
206 | |
---|
207 | /// \brief Add a new edge map writer command for the writer. |
---|
208 | /// |
---|
209 | /// Add a new edge map writer command for the writer. |
---|
210 | template <typename Map> |
---|
211 | GraphWriter& addEdgeMap(std::string name, const Map& map) { |
---|
212 | return addEdgeMap<typename WriterTraits::template Writer< |
---|
213 | typename Map::Value>, Map>(name, map); |
---|
214 | } |
---|
215 | |
---|
216 | |
---|
217 | /// \brief Add a new edge map writer command for the writer. |
---|
218 | /// |
---|
219 | /// Add a new edge map writer command for the writer. |
---|
220 | template <typename Writer, typename Map> |
---|
221 | GraphWriter& addEdgeMap(std::string name, |
---|
222 | const Map& map, const Writer& writer = Writer()) { |
---|
223 | edge_map_writers.push_back(make_pair(name, |
---|
224 | new MapWriter<Edge, Map, Writer>(map, writer))); |
---|
225 | return *this; |
---|
226 | } |
---|
227 | |
---|
228 | /// \brief Add a new labeled node writer for the writer. |
---|
229 | /// |
---|
230 | /// Add a new labeled node writer for the writer. |
---|
231 | GraphWriter& addNode(std::string name, const Node& node) { |
---|
232 | node_writers.push_back(make_pair(name, node)); |
---|
233 | return *this; |
---|
234 | } |
---|
235 | |
---|
236 | /// \brief Add a new labeled edge writer for the writer. |
---|
237 | /// |
---|
238 | /// Add a new labeled edge writer for the writer. |
---|
239 | GraphWriter& addEdge(std::string name, const Edge& edge) { |
---|
240 | edge_writers.push_back(make_pair(name, edge)); |
---|
241 | return *this; |
---|
242 | } |
---|
243 | |
---|
244 | /// \brief Executes the writer commands. |
---|
245 | /// |
---|
246 | /// Executes the writer commands. |
---|
247 | void run() { |
---|
248 | writeNodeSet(); |
---|
249 | writeEdgeSet(); |
---|
250 | writeNodes(); |
---|
251 | writeEdges(); |
---|
252 | os << "@end" << std::endl; |
---|
253 | } |
---|
254 | |
---|
255 | private: |
---|
256 | |
---|
257 | void writeNodeSet() { |
---|
258 | if (node_map_writers.size() == 0) return; |
---|
259 | os << "@nodeset" << std::endl; |
---|
260 | for (int i = 0; i < (int)node_map_writers.size(); ++i) { |
---|
261 | os << node_map_writers[i].first << '\t'; |
---|
262 | } |
---|
263 | os << std::endl; |
---|
264 | for (NodeIt it(graph); it != INVALID; ++it) { |
---|
265 | for (int i = 0; i < (int)node_map_writers.size(); ++i) { |
---|
266 | node_map_writers[i].second->write(os, it); |
---|
267 | } |
---|
268 | os << std::endl; |
---|
269 | } |
---|
270 | |
---|
271 | } |
---|
272 | |
---|
273 | void writeEdgeSet() { |
---|
274 | if (edge_map_writers.size() == 0) return; |
---|
275 | if (node_map_writers.size() == 0) { |
---|
276 | throw Exception() << "Missing node id map"; |
---|
277 | } |
---|
278 | os << "@edgeset" << std::endl; |
---|
279 | os << "\t\t"; |
---|
280 | for (int i = 0; i < (int)edge_map_writers.size(); ++i) { |
---|
281 | os << edge_map_writers[i].first << '\t'; |
---|
282 | } |
---|
283 | os << std::endl; |
---|
284 | for (EdgeIt it(graph); it != INVALID; ++it) { |
---|
285 | node_map_writers[0].second->write(os, graph.source(it)); |
---|
286 | node_map_writers[0].second->write(os, graph.target(it)); |
---|
287 | for (int i = 0; i < (int)edge_map_writers.size(); ++i) { |
---|
288 | edge_map_writers[i].second->write(os, it); |
---|
289 | } |
---|
290 | os << std::endl; |
---|
291 | } |
---|
292 | } |
---|
293 | |
---|
294 | void writeNodes() { |
---|
295 | if (node_writers.size() == 0) return; |
---|
296 | if (node_map_writers.size() == 0) { |
---|
297 | throw Exception() << "Missing node id map"; |
---|
298 | } |
---|
299 | os << "@nodes" << std::endl; |
---|
300 | for (int i = 0; i < (int)node_writers.size(); ++i) { |
---|
301 | os << node_writers[i].first << '\t'; |
---|
302 | node_map_writers[0].second->write(os, node_writers[i].second); |
---|
303 | os << std::endl; |
---|
304 | } |
---|
305 | } |
---|
306 | |
---|
307 | void writeEdges() { |
---|
308 | if (edge_writers.size() == 0) return; |
---|
309 | if (edge_map_writers.size() == 0) { |
---|
310 | throw Exception() << "Missing edge id map"; |
---|
311 | } |
---|
312 | os << "@edges" << std::endl; |
---|
313 | for (int i = 0; i < (int)edge_writers.size(); ++i) { |
---|
314 | os << edge_writers[i].first << '\t'; |
---|
315 | edge_map_writers[0].second->write(os, edge_writers[i].second); |
---|
316 | os << std::endl; |
---|
317 | } |
---|
318 | } |
---|
319 | |
---|
320 | // Writers |
---|
321 | |
---|
322 | template <class _Item> |
---|
323 | class WriterBase { |
---|
324 | public: |
---|
325 | typedef _Item Item; |
---|
326 | virtual void write(std::ostream&, const Item&) = 0; |
---|
327 | }; |
---|
328 | |
---|
329 | template <class _Item, typename _Map, typename _Writer> |
---|
330 | class MapWriter : public WriterBase<_Item> { |
---|
331 | public: |
---|
332 | typedef _Map Map; |
---|
333 | typedef _Writer Writer; |
---|
334 | typedef typename Writer::Value Value; |
---|
335 | typedef _Item Item; |
---|
336 | |
---|
337 | const Map& map; |
---|
338 | Writer writer; |
---|
339 | |
---|
340 | MapWriter(const Map& _map, const Writer& _writer) |
---|
341 | : map(_map), writer(_writer) {} |
---|
342 | |
---|
343 | |
---|
344 | virtual void write(std::ostream& os, const Item& item) { |
---|
345 | writer.write(os, map[item]); |
---|
346 | } |
---|
347 | |
---|
348 | }; |
---|
349 | |
---|
350 | |
---|
351 | |
---|
352 | typedef std::vector< std::pair<std::string, WriterBase<Node>*> > |
---|
353 | NodeMapWriters; |
---|
354 | NodeMapWriters node_map_writers; |
---|
355 | |
---|
356 | typedef std::vector< std::pair<std::string, WriterBase<Edge>*> > |
---|
357 | EdgeMapWriters; |
---|
358 | EdgeMapWriters edge_map_writers; |
---|
359 | |
---|
360 | typedef std::vector<std::pair<std::string, Node> > NodeWriters; |
---|
361 | NodeWriters node_writers; |
---|
362 | |
---|
363 | typedef std::vector<std::pair<std::string, Edge> > EdgeWriters; |
---|
364 | EdgeWriters edge_writers; |
---|
365 | |
---|
366 | std::ostream& os; |
---|
367 | Graph& graph; |
---|
368 | |
---|
369 | }; |
---|
370 | |
---|
371 | |
---|
372 | } |
---|