COIN-OR::LEMON - Graph Library

source: lemon-0.x/lemon/graph_writer.h @ 2476:059dcdda37c5

Last change on this file since 2476:059dcdda37c5 was 2467:2025a571895e, checked in by Balazs Dezso, 17 years ago

PathNodeIt?

PathWriter/Reader? structures
Distinict MapSet? readers and writers

File size: 21.9 KB
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[1137]1/* -*- C++ -*-
2 *
[1956]3 * This file is a part of LEMON, a generic C++ optimization library
4 *
[2391]5 * Copyright (C) 2003-2007
[1956]6 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
[1359]7 * (Egervary Research Group on Combinatorial Optimization, EGRES).
[1137]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
[2083]19///\ingroup lemon_io
[1137]20///\file
[1287]21///\brief Lemon Graph Format writer.
[1534]22///
[1137]23
[1214]24#ifndef LEMON_GRAPH_WRITER_H
25#define LEMON_GRAPH_WRITER_H
[1137]26
27#include <iostream>
28
29#include <lemon/error.h>
[1409]30#include <lemon/lemon_writer.h>
[1137]31
32namespace lemon {
33
[2083]34  /// \addtogroup lemon_io
[1333]35  /// @{
36
[1137]37  /// \brief The graph writer class.
38  ///
[2200]39  /// The \c GraphWriter class provides the graph output.  Before you
40  /// read this documentation it might be useful to read the general
41  /// description of \ref graph-io-page "Graph Input-Output".
[1540]42  ///
[2200]43  /// To write a graph you should first give writing commands to the
44  /// writer. You can declare write commands as \c NodeMap or \c
45  /// EdgeMap writing and labeled Node and Edge writing.
[1333]46  ///
[1946]47  ///\code
[1333]48  /// GraphWriter<ListGraph> writer(std::cout, graph);
[1946]49  ///\endcode
[1333]50  ///
[2200]51  /// The \c writeNodeMap() function declares a \c NodeMap writing
52  /// command in the \c GraphWriter. You should give as parameter the
53  /// name of the map and the map object. The NodeMap writing command
54  /// with name "label" should write a unique map because it is
55  /// regarded as label map (such a map is essential if the graph has
56  /// edges).
[1333]57  ///
[1946]58  ///\code
[1901]59  /// IdMap<ListGraph, Node> nodeLabelMap;
60  /// writer.writeNodeMap("label", nodeLabelMap);
[1333]61  ///
[1421]62  /// writer.writeNodeMap("coords", coords);
[1394]63  /// writer.writeNodeMap("color", colorMap);
[1946]64  ///\endcode
[1333]65  ///
[1394]66  /// With the \c writeEdgeMap() member function you can give an edge map
[1333]67  /// writing command similar to the NodeMaps.
68  ///
[1946]69  ///\code
[1333]70  /// DescriptorMap<ListGraph, Edge, ListGraph::EdgeMap<int> >
71  ///   edgeDescMap(graph);
[1394]72  /// writer.writeEdgeMap("descriptor", edgeDescMap);
[1333]73  ///
[1394]74  /// writer.writeEdgeMap("weight", weightMap);
75  /// writer.writeEdgeMap("label", labelMap);
[1946]76  ///\endcode
[1333]77  ///
[1394]78  /// With \c writeNode() and \c writeEdge() functions you can
[1526]79  /// point out Nodes and Edges in the graph. For example, you can
80  /// write out the source and target of a maximum flow instance.
[1333]81  ///
[1946]82  ///\code
[1394]83  /// writer.writeNode("source", sourceNode);
84  /// writer.writeNode("target", targetNode);
[1333]85  ///
[1394]86  /// writer.writeEdge("observed", edge);
[1946]87  ///\endcode
[1333]88  ///
89  /// After you give all write commands you must call the \c run() member
[1526]90  /// function, which executes all the writing commands.
[1333]91  ///
[1946]92  ///\code
[1333]93  /// writer.run();
[1946]94  ///\endcode
[1333]95  ///
[1287]96  /// \see DefaultWriterTraits
97  /// \see QuotedStringWriter
[1333]98  /// \see IdMap
99  /// \see DescriptorMap
[1421]100  /// \see \ref GraphReader
[1138]101  /// \see \ref graph-io-page
[1333]102  /// \author Balazs Dezso
[1137]103  template <typename _Graph, typename _WriterTraits = DefaultWriterTraits>
104  class GraphWriter {
105  public:
106   
107    typedef _Graph Graph;
108    typedef typename Graph::Node Node;
109    typedef typename Graph::Edge Edge;
110
111    typedef _WriterTraits WriterTraits;
[1409]112
[1137]113    /// \brief Construct a new GraphWriter.
114    ///
[1526]115    /// This function constructs a new GraphWriter to write the given graph
[1409]116    /// to the given stream.
[1208]117    GraphWriter(std::ostream& _os, const Graph& _graph)
[1409]118      : writer(new LemonWriter(_os)), own_writer(true),
[1421]119        nodeset_writer(*writer, _graph, std::string()),
120        edgeset_writer(*writer, _graph, nodeset_writer, std::string()),
[1409]121        node_writer(*writer, nodeset_writer, std::string()),
122        edge_writer(*writer, edgeset_writer, std::string()),
123        attribute_writer(*writer, std::string()) {}
[1137]124
[1409]125    /// \brief Construct a new GraphWriter.
126    ///
[1526]127    /// This function constructs a new GraphWriter to write the given graph
[1409]128    /// to the given file.
129    GraphWriter(const std::string& _filename, const Graph& _graph)
130      : writer(new LemonWriter(_filename)), own_writer(true),
[1421]131        nodeset_writer(*writer, _graph, std::string()),
132        edgeset_writer(*writer, _graph, nodeset_writer, std::string()),
[1409]133        node_writer(*writer, nodeset_writer, std::string()),
134        edge_writer(*writer, edgeset_writer, std::string()),
135        attribute_writer(*writer, std::string()) {}
136
137    /// \brief Construct a new GraphWriter.
138    ///
[1526]139    /// This function constructs a new GraphWriter to write the given graph
140    /// to the given LemonReader.
[1409]141    GraphWriter(LemonWriter& _writer, const Graph& _graph)
142      : writer(_writer), own_writer(false),
[1421]143        nodeset_writer(*writer, _graph, std::string()),
144        edgeset_writer(*writer, _graph, nodeset_writer, std::string()),
[1409]145        node_writer(*writer, nodeset_writer, std::string()),
146        edge_writer(*writer, edgeset_writer, std::string()),
147        attribute_writer(*writer, std::string()) {}
[1137]148
149    /// \brief Destruct the graph writer.
150    ///
[1526]151    /// This function destructs the graph writer.
[1137]152    ~GraphWriter() {
[1409]153      if (own_writer)
154        delete writer;
[1137]155    }
156
[1526]157    /// \brief Issue a new node map writing command for the writer.
[1137]158    ///
[1526]159   /// This function issues a new <i> node map writing command</i> to the writer.
[1137]160    template <typename Map>
[2386]161    GraphWriter& writeNodeMap(std::string label, const Map& map) {
162      nodeset_writer.writeNodeMap(label, map);
[1409]163      return *this;
[1137]164    }
165
[1540]166
[1526]167    /// \brief Issue a new node map writing command for the writer.
[1137]168    ///
[1526]169   /// This function issues a new <i> node map writing command</i> to the writer.
[2386]170    template <typename ItemWriter, typename Map>
171    GraphWriter& writeNodeMap(std::string label, const Map& map,
172                              const ItemWriter& iw = ItemWriter()) {
173      nodeset_writer.writeNodeMap(label, map, iw);
[1137]174      return *this;
175    }
176
177
[1526]178    /// \brief Issue a new edge map writing command for the writer.
[1137]179    ///
[1526]180   /// This function issues a new <i> edge map writing command</i> to the writer.
[1137]181    template <typename Map>
[2386]182    GraphWriter& writeEdgeMap(std::string label, const Map& map) {
183      edgeset_writer.writeEdgeMap(label, map);
[1409]184      return *this;
[1137]185    }
186
187
[1526]188    /// \brief Issue a new edge map writing command for the writer.
[1137]189    ///
[1526]190   /// This function issues a new <i> edge map writing command</i> to the writer.
[2386]191    template <typename ItemWriter, typename Map>
192    GraphWriter& writeEdgeMap(std::string label, const Map& map,
193                              const ItemWriter& iw = ItemWriter()) {
194      edgeset_writer.writeEdgeMap(label, map, iw);
[1137]195      return *this;
196    }
197
[1526]198    /// \brief Issue a new labeled node writing command to the writer.
[1137]199    ///
[1526]200    /// This function issues a new <i> labeled node writing command</i>
201    /// to the writer.
[2386]202    GraphWriter& writeNode(std::string label, const Node& node) {
203      node_writer.writeNode(label, node);
[1137]204      return *this;
205    }
206
[1526]207    /// \brief Issue a new labeled edge writing command to the writer.
[1137]208    ///
[1526]209    /// This function issues a new <i> labeled edge writing command</i>
210    /// to the writer.
[2386]211    GraphWriter& writeEdge(std::string label, const Edge& edge) {
212      edge_writer.writeEdge(label, edge);
[1409]213    }
214
[1526]215    /// \brief Issue a new attribute writing command.
[1409]216    ///
[1526]217    /// This function issues a new <i> attribute writing command</i>
218    /// to the writer.
[1409]219    template <typename Value>
[2386]220    GraphWriter& writeAttribute(std::string label, const Value& value) {
221      attribute_writer.writeAttribute(label, value);
[1409]222      return *this;
223    }
224   
[1526]225    /// \brief Issue a new attribute writing command.
[1409]226    ///
[1526]227    /// This function issues a new <i> attribute writing command</i>
228    /// to the writer.
[2386]229    template <typename ItemWriter, typename Value>
230    GraphWriter& writeAttribute(std::string label, const Value& value,
231                               const ItemWriter& iw = ItemWriter()) {
232      attribute_writer.writeAttribute(label, value, iw);
[1137]233      return *this;
234    }
235
[1409]236    /// \brief Conversion operator to LemonWriter.
237    ///
[1526]238    /// Conversion operator to LemonWriter. It makes possible
[1409]239    /// to access the encapsulated \e LemonWriter, this way
240    /// you can attach to this writer new instances of
[1540]241    /// \e LemonWriter::SectionWriter. For more details see
242    /// the \ref rwbackground "Background of Reading and Writing".
[1409]243    operator LemonWriter&() {
244      return *writer;
[1396]245    }
246
[1526]247    /// \brief Executes the writing commands.
[1137]248    ///
[1526]249    /// Executes the writing commands.
[1409]250    void run() {
251      writer->run();
[1137]252    }
253
[2467]254    /// \brief Returns true if the writer can give back the labels by the items.
255    ///
256    /// Returns true if the writer can give back the the labels by the items.
257    bool isLabelWriter() const {
258      return nodeset_writer.isLabelWriter() &&
259        edgeset_writer.isLabelWriter();
260    }
261
[1901]262    /// \brief Write the label of the given node.
[1429]263    ///
[2467]264    /// It writes the label of the given node. If there was written a "label"
[1526]265    /// named node map then it will write the map value belonging to the node.
[1901]266    void writeLabel(std::ostream& os, const Node& item) const {
267      nodeset_writer.writeLabel(os, item);
[1429]268    }
269
[1901]270    /// \brief Write the label of the given edge.
[1429]271    ///
[2467]272    /// It writes the label of the given edge. If there was written a "label"
[1526]273    /// named edge map then it will write the map value belonging to the edge.
[1901]274    void writeLabel(std::ostream& os, const Edge& item) const {
275      edgeset_writer.writeLabel(os, item);
[1429]276    }
277
[2467]278    /// \brief Sorts the given node vector by label.
279    ///
280    /// Sorts the given node vector by label. If there was written an
281    /// "label" named map then the vector will be sorted by the values
282    /// of this map. Otherwise if the \c forceLabel parameter was true
283    /// it will be sorted by its id in the graph.
284    void sortByLabel(std::vector<Node>& nodes) const {
285      nodeset_writer.sortByLabel(nodes);
286    }
287
288    /// \brief Sorts the given edge vector by label.
289    ///
290    /// Sorts the given edge vector by label. If there was written an
291    /// "label" named map then the vector will be sorted by the values
292    /// of this map. Otherwise if the \c forceLabel parameter was true
293    /// it will be sorted by its id in the graph.
294    void sortByLabel(std::vector<Edge>& edges) const {
295      edgeset_writer.sortByLabel(edges);
296    }
297
[1137]298  private:
299
[1409]300    LemonWriter* writer;
301    bool own_writer;
[1137]302
[1409]303    NodeSetWriter<Graph, WriterTraits> nodeset_writer;
304    EdgeSetWriter<Graph, WriterTraits> edgeset_writer;
305
306    NodeWriter<Graph> node_writer;
307    EdgeWriter<Graph> edge_writer;
308   
309    AttributeWriter<WriterTraits> attribute_writer;
[1137]310  };
311
[1409]312
[1421]313  /// \brief The undirected graph writer class.
314  ///
[1909]315  /// The \c UGraphWriter class provides the ugraph output. To write
[1526]316  /// a graph you should first give writing commands to the writer. You can
[1909]317  /// declare write command as \c NodeMap, \c EdgeMap or \c UEdgeMap
318  /// writing and labeled Node, Edge or UEdge writing.
[1421]319  ///
[1946]320  ///\code
[1909]321  /// UGraphWriter<ListUGraph> writer(std::cout, graph);
[1946]322  ///\endcode
[1421]323  ///
324  /// The \c writeNodeMap() function declares a \c NodeMap writing
[1909]325  /// command in the \c UGraphWriter. You should give as parameter
[1421]326  /// the name of the map and the map object. The NodeMap writing
[1901]327  /// command with name "label" should write a unique map because it
328  /// is regarded as label map.
[1421]329  ///
[1946]330  ///\code
[1909]331  /// IdMap<ListUGraph, Node> nodeLabelMap;
[1901]332  /// writer.writeNodeMap("label", nodeLabelMap);
[1421]333  ///
334  /// writer.writeNodeMap("coords", coords);
335  /// writer.writeNodeMap("color", colorMap);
[1946]336  ///\endcode
[1421]337  ///
[1909]338  /// With the \c writeUEdgeMap() member function you can give an
[1421]339  /// undirected edge map writing command similar to the NodeMaps.
340  ///
[1946]341  ///\code
[1421]342  /// DescriptorMap<ListGraph, Edge, ListGraph::EdgeMap<int> >
343  ///   edgeDescMap(graph);
[1909]344  /// writer.writeUEdgeMap("descriptor", edgeDescMap);
[1421]345  ///
[1909]346  /// writer.writeUEdgeMap("weight", weightMap);
347  /// writer.writeUEdgeMap("label", labelMap);
[1946]348  ///\endcode
[1421]349  ///
350  /// The EdgeMap handling is just a syntactical sugar. It writes
351  /// two undirected edge map with '+' and '-' prefix in the name.
352  ///
[1946]353  ///\code
[1421]354  /// writer.writeEdgeMap("capacity", capacityMap);
[1946]355  ///\endcode
[1421]356  ///
357  ///
[1909]358  /// With \c writeNode() and \c writeUEdge() functions you can
[1526]359  /// designate nodes and undirected edges in the graph. For example, you can
[1421]360  /// write out the source and target of the graph.
361  ///
[1946]362  ///\code
[1421]363  /// writer.writeNode("source", sourceNode);
364  /// writer.writeNode("target", targetNode);
365  ///
[1909]366  /// writer.writeUEdge("observed", uEdge);
[1946]367  ///\endcode
[1421]368  ///
369  /// After you give all write commands you must call the \c run() member
[1526]370  /// function, which executes all the writing commands.
[1421]371  ///
[1946]372  ///\code
[1421]373  /// writer.run();
[1946]374  ///\endcode
[1421]375  ///
376  /// \see DefaultWriterTraits
377  /// \see QuotedStringWriter
378  /// \see IdMap
379  /// \see DescriptorMap
380  /// \see \ref GraphWriter
381  /// \see \ref graph-io-page
382  /// \author Balazs Dezso
383  template <typename _Graph, typename _WriterTraits = DefaultWriterTraits>
[1909]384  class UGraphWriter {
[1421]385  public:
386   
387    typedef _Graph Graph;
388    typedef typename Graph::Node Node;
389    typedef typename Graph::Edge Edge;
[1909]390    typedef typename Graph::UEdge UEdge;
[1421]391
392    typedef _WriterTraits WriterTraits;
393
[1909]394    /// \brief Construct a new UGraphWriter.
[1421]395    ///
[1909]396    /// Construct a new UGraphWriter. It writes the given graph
[1421]397    /// to the given stream.
[1909]398    UGraphWriter(std::ostream& _os, const Graph& _graph)
[1421]399      : writer(new LemonWriter(_os)), own_writer(true),
400        nodeset_writer(*writer, _graph, std::string()),
[2467]401        uedgeset_writer(*writer, _graph, nodeset_writer, std::string()),
[1421]402        node_writer(*writer, nodeset_writer, std::string()),
[2467]403        uedge_writer(*writer, uedgeset_writer, std::string()),
[1421]404        attribute_writer(*writer, std::string()) {}
405
[1909]406    /// \brief Construct a new UGraphWriter.
[1421]407    ///
[1909]408    /// Construct a new UGraphWriter. It writes the given graph
[1421]409    /// to the given file.
[1909]410    UGraphWriter(const std::string& _filename, const Graph& _graph)
[1421]411      : writer(new LemonWriter(_filename)), own_writer(true),
412        nodeset_writer(*writer, _graph, std::string()),
[2467]413        uedgeset_writer(*writer, _graph, nodeset_writer, std::string()),
[1421]414        node_writer(*writer, nodeset_writer, std::string()),
[2467]415        uedge_writer(*writer, uedgeset_writer, std::string()),
[1421]416        attribute_writer(*writer, std::string()) {}
417
[1909]418    /// \brief Construct a new UGraphWriter.
[1421]419    ///
[1909]420    /// Construct a new UGraphWriter. It writes the given graph
[2467]421    /// to given LemonWriter.
[1909]422    UGraphWriter(LemonWriter& _writer, const Graph& _graph)
[1421]423      : writer(_writer), own_writer(false),
424        nodeset_writer(*writer, _graph, std::string()),
[2467]425        uedgeset_writer(*writer, _graph, nodeset_writer, std::string()),
[1421]426        node_writer(*writer, nodeset_writer, std::string()),
[2467]427        uedge_writer(*writer, uedgeset_writer, std::string()),
[1421]428        attribute_writer(*writer, std::string()) {}
429
430    /// \brief Destruct the graph writer.
431    ///
432    /// Destruct the graph writer.
[1909]433    ~UGraphWriter() {
[1421]434      if (own_writer)
435        delete writer;
436    }
437
[1526]438    /// \brief Issue a new node map writing command to the writer.
[1421]439    ///
[2200]440    /// This function issues a new <i> node map writing command</i> to
441    /// the writer.
[1421]442    template <typename Map>
[2386]443    UGraphWriter& writeNodeMap(std::string label, const Map& map) {
444      nodeset_writer.writeNodeMap(label, map);
[1421]445      return *this;
446    }
447
[1526]448    /// \brief Issue a new node map writing command to the writer.
[1421]449    ///
[2200]450    /// This function issues a new <i> node map writing command</i> to
451    /// the writer.
[2386]452    template <typename ItemWriter, typename Map>
453    UGraphWriter& writeNodeMap(std::string label, const Map& map,
454                              const ItemWriter& iw = ItemWriter()) {
455      nodeset_writer.writeNodeMap(label, map, iw);
[1421]456      return *this;
457    }
458
[1526]459    /// \brief Issue a new edge map writing command to the writer.
[1421]460    ///
[2200]461    /// This function issues a new <i> edge map writing command</i> to
462    /// the writer.
[1421]463    template <typename Map>
[2386]464    UGraphWriter& writeEdgeMap(std::string label, const Map& map) {
[2467]465      uedgeset_writer.writeEdgeMap(label, map);
[1421]466      return *this;
467    }
468
[1526]469    /// \brief Issue a new edge map writing command to the writer.
[1421]470    ///
[2200]471    /// This function issues a new <i> edge map writing command</i> to
472    /// the writer.
[2386]473    template <typename ItemWriter, typename Map>
474    UGraphWriter& writeEdgeMap(std::string label, const Map& map,
475                                   const ItemWriter& iw = ItemWriter()) {
[2467]476      uedgeset_writer.writeEdgeMap(label, map, iw);
[1421]477      return *this;
478    }
479
[1526]480    /// \brief Issue a new undirected edge map writing command to the writer.
[1421]481    ///
[1526]482    /// This function issues a new <i> undirected edge map writing
483    /// command</i> to the writer.
[1421]484    template <typename Map>
[2386]485    UGraphWriter& writeUEdgeMap(std::string label, const Map& map) {
[2467]486      uedgeset_writer.writeUEdgeMap(label, map);
[1421]487      return *this;
488    }
489
[1526]490    /// \brief Issue a new undirected edge map writing command to the writer.
[1421]491    ///
[1526]492    /// This function issues a new <i> undirected edge map writing
493    /// command</i> to the writer.
[2386]494   template <typename ItemWriter, typename Map>
495    UGraphWriter& writeUEdgeMap(std::string label, const Map& map,
496                                        const ItemWriter& iw = ItemWriter()) {
[2467]497      uedgeset_writer.writeUEdgeMap(label, map, iw);
[1421]498      return *this;
499    }
500
[1526]501    /// \brief Issue a new labeled node writer to the writer.
[1421]502    ///
[1526]503    /// This function issues a new <i> labeled node writing
504    /// command</i> to the writer.
[2386]505    UGraphWriter& writeNode(std::string label, const Node& node) {
506      node_writer.writeNode(label, node);
[1421]507      return *this;
508    }
509
[1526]510    /// \brief Issue a new labeled edge writer to the writer.
[1421]511    ///
[1526]512    /// This function issues a new <i> labeled edge writing
513    /// command</i> to the writer.
[2386]514    UGraphWriter& writeEdge(std::string label, const Edge& edge) {
[2467]515      uedge_writer.writeEdge(label, edge);
[1429]516    }
517
[1526]518    /// \brief Issue a new labeled undirected edge writing command to
519    /// the writer.
[1429]520    ///
[1526]521    /// Issue a new <i>labeled undirected edge writing command</i> to
522    /// the writer.
[2386]523    UGraphWriter& writeUEdge(std::string label, const UEdge& edge) {
[2467]524      uedge_writer.writeUEdge(label, edge);
[1421]525    }
526
[1526]527    /// \brief Issue a new attribute writing command.
[1421]528    ///
[1526]529    /// This function issues a new <i> attribute writing
530    /// command</i> to the writer.
[1421]531    template <typename Value>
[2386]532    UGraphWriter& writeAttribute(std::string label, const Value& value) {
533      attribute_writer.writeAttribute(label, value);
[1421]534      return *this;
535    }
536   
[1526]537    /// \brief Issue a new attribute writing command.
[1421]538    ///
[1526]539    /// This function issues a new <i> attribute writing
540    /// command</i> to the writer.
[2386]541    template <typename ItemWriter, typename Value>
542    UGraphWriter& writeAttribute(std::string label, const Value& value,
543                               const ItemWriter& iw = ItemWriter()) {
544      attribute_writer.writeAttribute(label, value, iw);
[1421]545      return *this;
546    }
547
548    /// \brief Conversion operator to LemonWriter.
549    ///
[1526]550    /// Conversion operator to LemonWriter. It makes possible
[1421]551    /// to access the encapsulated \e LemonWriter, this way
552    /// you can attach to this writer new instances of
553    /// \e LemonWriter::SectionWriter.
554    operator LemonWriter&() {
555      return *writer;
556    }
557
[1526]558    /// \brief Executes the writing commands.
[1421]559    ///
[1526]560    /// Executes the writing commands.
[1421]561    void run() {
562      writer->run();
563    }
564
[2467]565    /// \brief Returns true if the writer can give back the labels by the items.
566    ///
567    /// Returns true if the writer can give back the the labels by the items.
568    bool isLabelWriter() const {
569      return nodeset_writer.isLabelWriter() &&
570        uedgeset_writer.isLabelWriter();
571    }
572
[1901]573    /// \brief Write the label of the given node.
[1429]574    ///
[2467]575    /// It writes the label of the given node. If there was written a "label"
[1526]576    /// named node map then it will write the map value belonging to the node.
[1901]577    void writeLabel(std::ostream& os, const Node& item) const {
578      nodeset_writer.writeLabel(os, item);
[1429]579    }
580
[1901]581    /// \brief Write the label of the given edge.
[1429]582    ///
[2467]583    /// It writes the label of the given edge. If there was written a "label"
[1526]584    /// named edge map then it will write the map value belonging to the edge.
[1901]585    void writeLabel(std::ostream& os, const Edge& item) const {
[2467]586      uedgeset_writer.writeLabel(os, item);
[1429]587    }
588
[1901]589    /// \brief Write the label of the given undirected edge.
[1429]590    ///
[2200]591    /// It writes the label of the given undirected edge. If there was
[2467]592    /// written a "label" named edge map then it will write the map
[2200]593    /// value belonging to the edge.
[1909]594    void writeLabel(std::ostream& os, const UEdge& item) const {
[2467]595      uedgeset_writer.writeLabel(os, item);
[1429]596    }
597
[2467]598    /// \brief Sorts the given node vector by label.
599    ///
600    /// Sorts the given node vector by label. If there was written an
601    /// "label" named map then the vector will be sorted by the values
602    /// of this map. Otherwise if the \c forceLabel parameter was true
603    /// it will be sorted by its id in the graph.
604    void sortByLabel(std::vector<Node>& nodes) const {
605      nodeset_writer.sortByLabel(nodes);
606    }
607
608    /// \brief Sorts the given edge vector by label.
609    ///
610    /// Sorts the given edge vector by label. If there was written an
611    /// "label" named map then the vector will be sorted by the values
612    /// of this map. Otherwise if the \c forceLabel parameter was true
613    /// it will be sorted by its id in the graph.
614    void sortByLabel(std::vector<Edge>& edges) const {
615      uedgeset_writer.sortByLabel(edges);
616    }
617
618    /// \brief Sorts the given undirected edge vector by label.
619    ///
620    /// Sorts the given undirected edge vector by label. If there was
621    /// written an "label" named map then the vector will be sorted by
622    /// the values of this map. Otherwise if the \c forceLabel
623    /// parameter was true it will be sorted by its id in the graph.
624    void sortByLabel(std::vector<UEdge>& uedges) const {
625      uedgeset_writer.sortByLabel(uedges);
626    }
[1429]627
[1421]628  private:
629
630    LemonWriter* writer;
631    bool own_writer;
632
633    NodeSetWriter<Graph, WriterTraits> nodeset_writer;
[2467]634    UEdgeSetWriter<Graph, WriterTraits> uedgeset_writer;
[1421]635
636    NodeWriter<Graph> node_writer;
[2467]637    UEdgeWriter<Graph> uedge_writer;
[1421]638   
639    AttributeWriter<WriterTraits> attribute_writer;
640  };
641
[1333]642  /// @}
[1137]643
644}
[1214]645
646#endif
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