1 | /* -*- C++ -*- |
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2 | * lemon/graph_writer.h - Part of LEMON, a generic C++ optimization library |
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3 | * |
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4 | * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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5 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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6 | * |
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7 | * Permission to use, modify and distribute this software is granted |
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8 | * provided that this copyright notice appears in all copies. For |
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9 | * precise terms see the accompanying LICENSE file. |
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10 | * |
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11 | * This software is provided "AS IS" with no warranty of any kind, |
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12 | * express or implied, and with no claim as to its suitability for any |
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13 | * purpose. |
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14 | * |
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15 | */ |
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16 | |
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17 | ///\ingroup io_group |
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18 | ///\file |
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19 | ///\brief Lemon Graph Format writer. |
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20 | /// |
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21 | |
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22 | #ifndef LEMON_GRAPH_WRITER_H |
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23 | #define LEMON_GRAPH_WRITER_H |
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24 | |
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25 | #include <iostream> |
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26 | |
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27 | #include <lemon/error.h> |
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28 | #include <lemon/lemon_writer.h> |
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29 | |
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30 | namespace lemon { |
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31 | |
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32 | /// \addtogroup io_group |
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33 | /// @{ |
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34 | |
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35 | /// \brief The graph writer class. |
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36 | /// |
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37 | /// The \c GraphWriter class provides the graph output. |
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38 | /// Before you read this documentation it might be useful to read the general |
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39 | /// description of \ref graph-io-page "Graph Input-Output". |
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40 | /// |
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41 | /// If you don't need very sophisticated |
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42 | /// behaviour then you can use the versions of the public function |
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43 | /// \ref writeGraph() to output a graph (or a max flow instance etc). |
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44 | /// |
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45 | /// To write a graph |
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46 | /// you should first give writing commands to the writer. You can declare |
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47 | /// write commands as \c NodeMap or \c EdgeMap writing and labeled Node and |
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48 | /// Edge writing. |
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49 | /// |
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50 | /// \code |
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51 | /// GraphWriter<ListGraph> writer(std::cout, graph); |
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52 | /// \endcode |
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53 | /// |
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54 | /// The \c writeNodeMap() function declares a \c NodeMap writing |
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55 | /// command in the \c GraphWriter. You should give as parameter |
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56 | /// the name of the map and the map object. The NodeMap writing |
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57 | /// command with name "id" should write a unique map because it |
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58 | /// is regarded as ID map (such a map is essential if the graph has edges). |
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59 | /// |
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60 | /// \code |
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61 | /// IdMap<ListGraph, Node> nodeIdMap; |
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62 | /// writer.writeNodeMap("id", nodeIdMap); |
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63 | /// |
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64 | /// writer.writeNodeMap("coords", coords); |
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65 | /// writer.writeNodeMap("color", colorMap); |
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66 | /// \endcode |
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67 | /// |
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68 | /// With the \c writeEdgeMap() member function you can give an edge map |
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69 | /// writing command similar to the NodeMaps. |
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70 | /// |
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71 | /// \code |
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72 | /// DescriptorMap<ListGraph, Edge, ListGraph::EdgeMap<int> > |
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73 | /// edgeDescMap(graph); |
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74 | /// writer.writeEdgeMap("descriptor", edgeDescMap); |
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75 | /// |
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76 | /// writer.writeEdgeMap("weight", weightMap); |
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77 | /// writer.writeEdgeMap("label", labelMap); |
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78 | /// \endcode |
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79 | /// |
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80 | /// With \c writeNode() and \c writeEdge() functions you can |
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81 | /// point out Nodes and Edges in the graph. For example, you can |
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82 | /// write out the source and target of a maximum flow instance. |
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83 | /// |
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84 | /// \code |
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85 | /// writer.writeNode("source", sourceNode); |
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86 | /// writer.writeNode("target", targetNode); |
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87 | /// |
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88 | /// writer.writeEdge("observed", edge); |
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89 | /// \endcode |
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90 | /// |
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91 | /// After you give all write commands you must call the \c run() member |
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92 | /// function, which executes all the writing commands. |
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93 | /// |
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94 | /// \code |
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95 | /// writer.run(); |
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96 | /// \endcode |
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97 | /// |
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98 | /// \see DefaultWriterTraits |
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99 | /// \see QuotedStringWriter |
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100 | /// \see IdMap |
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101 | /// \see DescriptorMap |
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102 | /// \see \ref GraphReader |
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103 | /// \see \ref graph-io-page |
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104 | /// \author Balazs Dezso |
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105 | template <typename _Graph, typename _WriterTraits = DefaultWriterTraits> |
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106 | class GraphWriter { |
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107 | public: |
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108 | |
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109 | typedef _Graph Graph; |
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110 | typedef typename Graph::Node Node; |
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111 | typedef typename Graph::Edge Edge; |
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112 | |
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113 | typedef _WriterTraits WriterTraits; |
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114 | |
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115 | /// \brief Construct a new GraphWriter. |
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116 | /// |
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117 | /// This function constructs a new GraphWriter to write the given graph |
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118 | /// to the given stream. |
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119 | GraphWriter(std::ostream& _os, const Graph& _graph) |
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120 | : writer(new LemonWriter(_os)), own_writer(true), |
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121 | nodeset_writer(*writer, _graph, std::string()), |
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122 | edgeset_writer(*writer, _graph, nodeset_writer, std::string()), |
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123 | node_writer(*writer, nodeset_writer, std::string()), |
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124 | edge_writer(*writer, edgeset_writer, std::string()), |
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125 | attribute_writer(*writer, std::string()) {} |
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126 | |
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127 | /// \brief Construct a new GraphWriter. |
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128 | /// |
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129 | /// This function constructs a new GraphWriter to write the given graph |
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130 | /// to the given file. |
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131 | GraphWriter(const std::string& _filename, const Graph& _graph) |
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132 | : writer(new LemonWriter(_filename)), own_writer(true), |
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133 | nodeset_writer(*writer, _graph, std::string()), |
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134 | edgeset_writer(*writer, _graph, nodeset_writer, std::string()), |
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135 | node_writer(*writer, nodeset_writer, std::string()), |
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136 | edge_writer(*writer, edgeset_writer, std::string()), |
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137 | attribute_writer(*writer, std::string()) {} |
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138 | |
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139 | /// \brief Construct a new GraphWriter. |
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140 | /// |
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141 | /// This function constructs a new GraphWriter to write the given graph |
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142 | /// to the given LemonReader. |
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143 | GraphWriter(LemonWriter& _writer, const Graph& _graph) |
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144 | : writer(_writer), own_writer(false), |
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145 | nodeset_writer(*writer, _graph, std::string()), |
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146 | edgeset_writer(*writer, _graph, nodeset_writer, std::string()), |
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147 | node_writer(*writer, nodeset_writer, std::string()), |
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148 | edge_writer(*writer, edgeset_writer, std::string()), |
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149 | attribute_writer(*writer, std::string()) {} |
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150 | |
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151 | /// \brief Destruct the graph writer. |
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152 | /// |
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153 | /// This function destructs the graph writer. |
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154 | ~GraphWriter() { |
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155 | if (own_writer) |
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156 | delete writer; |
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157 | } |
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158 | |
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159 | /// \brief Issue a new node map writing command for the writer. |
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160 | /// |
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161 | /// This function issues a new <i> node map writing command</i> to the writer. |
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162 | template <typename Map> |
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163 | GraphWriter& writeNodeMap(std::string name, const Map& map) { |
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164 | nodeset_writer.writeNodeMap(name, map); |
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165 | return *this; |
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166 | } |
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167 | |
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168 | |
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169 | /// \brief Issue a new node map writing command for the writer. |
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170 | /// |
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171 | /// This function issues a new <i> node map writing command</i> to the writer. |
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172 | template <typename Writer, typename Map> |
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173 | GraphWriter& writeNodeMap(std::string name, const Map& map, |
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174 | const Writer& writer = Writer()) { |
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175 | nodeset_writer.writeNodeMap(name, map, writer); |
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176 | return *this; |
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177 | } |
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178 | |
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179 | |
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180 | /// \brief Issue a new edge map writing command for the writer. |
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181 | /// |
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182 | /// This function issues a new <i> edge map writing command</i> to the writer. |
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183 | template <typename Map> |
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184 | GraphWriter& writeEdgeMap(std::string name, const Map& map) { |
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185 | edgeset_writer.writeEdgeMap(name, map); |
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186 | return *this; |
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187 | } |
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188 | |
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189 | |
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190 | /// \brief Issue a new edge map writing command for the writer. |
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191 | /// |
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192 | /// This function issues a new <i> edge map writing command</i> to the writer. |
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193 | template <typename Writer, typename Map> |
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194 | GraphWriter& writeEdgeMap(std::string name, const Map& map, |
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195 | const Writer& writer = Writer()) { |
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196 | edgeset_writer.writeEdgeMap(name, map, writer); |
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197 | return *this; |
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198 | } |
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199 | |
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200 | /// \brief Issue a new labeled node writing command to the writer. |
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201 | /// |
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202 | /// This function issues a new <i> labeled node writing command</i> |
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203 | /// to the writer. |
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204 | GraphWriter& writeNode(std::string name, const Node& node) { |
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205 | node_writer.writeNode(name, node); |
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206 | return *this; |
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207 | } |
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208 | |
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209 | /// \brief Issue a new labeled edge writing command to the writer. |
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210 | /// |
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211 | /// This function issues a new <i> labeled edge writing command</i> |
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212 | /// to the writer. |
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213 | GraphWriter& writeEdge(std::string name, const Edge& edge) { |
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214 | edge_writer.writeEdge(name, edge); |
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215 | } |
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216 | |
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217 | /// \brief Issue a new attribute writing command. |
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218 | /// |
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219 | /// This function issues a new <i> attribute writing command</i> |
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220 | /// to the writer. |
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221 | template <typename Value> |
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222 | GraphWriter& writeAttribute(std::string name, const Value& value) { |
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223 | attribute_writer.writeAttribute(name, value); |
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224 | return *this; |
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225 | } |
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226 | |
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227 | /// \brief Issue a new attribute writing command. |
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228 | /// |
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229 | /// This function issues a new <i> attribute writing command</i> |
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230 | /// to the writer. |
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231 | template <typename Writer, typename Value> |
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232 | GraphWriter& writeAttribute(std::string name, const Value& value, |
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233 | const Writer& writer) { |
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234 | attribute_writer.writeAttribute<Writer>(name, value, writer); |
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235 | return *this; |
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236 | } |
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237 | |
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238 | /// \brief Conversion operator to LemonWriter. |
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239 | /// |
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240 | /// Conversion operator to LemonWriter. It makes possible |
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241 | /// to access the encapsulated \e LemonWriter, this way |
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242 | /// you can attach to this writer new instances of |
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243 | /// \e LemonWriter::SectionWriter. For more details see |
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244 | /// the \ref rwbackground "Background of Reading and Writing". |
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245 | operator LemonWriter&() { |
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246 | return *writer; |
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247 | } |
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248 | |
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249 | /// \brief Executes the writing commands. |
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250 | /// |
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251 | /// Executes the writing commands. |
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252 | void run() { |
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253 | writer->run(); |
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254 | } |
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255 | |
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256 | /// \brief Write the id of the given node. |
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257 | /// |
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258 | /// It writes the id of the given node. If there was written an "id" |
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259 | /// named node map then it will write the map value belonging to the node. |
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260 | void writeId(std::ostream& os, const Node& item) const { |
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261 | nodeset_writer.writeId(os, item); |
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262 | } |
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263 | |
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264 | /// \brief Write the id of the given edge. |
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265 | /// |
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266 | /// It writes the id of the given edge. If there was written an "id" |
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267 | /// named edge map then it will write the map value belonging to the edge. |
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268 | void writeId(std::ostream& os, const Edge& item) const { |
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269 | edgeset_writer.writeId(os, item); |
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270 | } |
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271 | |
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272 | private: |
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273 | |
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274 | LemonWriter* writer; |
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275 | bool own_writer; |
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276 | |
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277 | NodeSetWriter<Graph, WriterTraits> nodeset_writer; |
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278 | EdgeSetWriter<Graph, WriterTraits> edgeset_writer; |
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279 | |
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280 | NodeWriter<Graph> node_writer; |
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281 | EdgeWriter<Graph> edge_writer; |
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282 | |
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283 | AttributeWriter<WriterTraits> attribute_writer; |
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284 | }; |
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285 | |
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286 | |
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287 | |
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288 | /// \brief Write a graph to the output. |
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289 | /// |
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290 | /// It is a helper function to write a graph to the given output |
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291 | /// stream. It gives back a GraphWriter object and this object |
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292 | /// can write more maps, labeled nodes and edges and attributes. |
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293 | /// \warning Do not forget to call the \c run() function. |
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294 | /// |
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295 | /// \param os The output stream. |
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296 | /// \param g The graph. |
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297 | template <typename Graph> |
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298 | GraphWriter<Graph> graphWriter(std::ostream& os, const Graph &g) { |
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299 | return GraphWriter<Graph>(os, g); |
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300 | } |
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301 | |
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302 | /// \brief Write a graph to the output. |
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303 | /// |
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304 | /// It is a helper function to write a graph to the given output |
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305 | /// file. It gives back a GraphWriter object and this object |
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306 | /// can write more maps, labeled nodes and edges and attributes. |
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307 | /// \warning Do not forget to call the \c run() function. |
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308 | /// |
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309 | /// \param fn The filename. |
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310 | /// \param g The graph. |
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311 | template <typename Graph> |
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312 | GraphWriter<Graph> graphWriter(const std::string& fn, const Graph &g) { |
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313 | return GraphWriter<Graph>(fn, g); |
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314 | } |
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315 | |
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316 | /// \brief The undirected graph writer class. |
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317 | /// |
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318 | /// The \c UndirGraphWriter class provides the undir graph output. To write |
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319 | /// a graph you should first give writing commands to the writer. You can |
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320 | /// declare write command as \c NodeMap, \c EdgeMap or \c UndirEdgeMap |
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321 | /// writing and labeled Node, Edge or UndirEdge writing. |
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322 | /// |
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323 | /// \code |
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324 | /// UndirGraphWriter<UndirListGraph> writer(std::cout, graph); |
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325 | /// \endcode |
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326 | /// |
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327 | /// The \c writeNodeMap() function declares a \c NodeMap writing |
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328 | /// command in the \c UndirGraphWriter. You should give as parameter |
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329 | /// the name of the map and the map object. The NodeMap writing |
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330 | /// command with name "id" should write a unique map because it |
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331 | /// is regarded as ID map. |
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332 | /// |
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333 | /// \code |
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334 | /// IdMap<UndirListGraph, Node> nodeIdMap; |
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335 | /// writer.writeNodeMap("id", nodeIdMap); |
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336 | /// |
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337 | /// writer.writeNodeMap("coords", coords); |
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338 | /// writer.writeNodeMap("color", colorMap); |
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339 | /// \endcode |
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340 | /// |
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341 | /// With the \c writeUndirEdgeMap() member function you can give an |
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342 | /// undirected edge map writing command similar to the NodeMaps. |
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343 | /// |
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344 | /// \code |
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345 | /// DescriptorMap<ListGraph, Edge, ListGraph::EdgeMap<int> > |
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346 | /// edgeDescMap(graph); |
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347 | /// writer.writeUndirEdgeMap("descriptor", edgeDescMap); |
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348 | /// |
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349 | /// writer.writeUndirEdgeMap("weight", weightMap); |
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350 | /// writer.writeUndirEdgeMap("label", labelMap); |
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351 | /// \endcode |
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352 | /// |
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353 | /// The EdgeMap handling is just a syntactical sugar. It writes |
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354 | /// two undirected edge map with '+' and '-' prefix in the name. |
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355 | /// |
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356 | /// \code |
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357 | /// writer.writeEdgeMap("capacity", capacityMap); |
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358 | /// \endcode |
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359 | /// |
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360 | /// |
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361 | /// With \c writeNode() and \c writeUndirEdge() functions you can |
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362 | /// designate nodes and undirected edges in the graph. For example, you can |
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363 | /// write out the source and target of the graph. |
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364 | /// |
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365 | /// \code |
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366 | /// writer.writeNode("source", sourceNode); |
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367 | /// writer.writeNode("target", targetNode); |
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368 | /// |
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369 | /// writer.writeUndirEdge("observed", undirEdge); |
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370 | /// \endcode |
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371 | /// |
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372 | /// After you give all write commands you must call the \c run() member |
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373 | /// function, which executes all the writing commands. |
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374 | /// |
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375 | /// \code |
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376 | /// writer.run(); |
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377 | /// \endcode |
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378 | /// |
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379 | /// \see DefaultWriterTraits |
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380 | /// \see QuotedStringWriter |
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381 | /// \see IdMap |
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382 | /// \see DescriptorMap |
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383 | /// \see \ref GraphWriter |
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384 | /// \see \ref graph-io-page |
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385 | /// \author Balazs Dezso |
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386 | template <typename _Graph, typename _WriterTraits = DefaultWriterTraits> |
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387 | class UndirGraphWriter { |
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388 | public: |
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389 | |
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390 | typedef _Graph Graph; |
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391 | typedef typename Graph::Node Node; |
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392 | typedef typename Graph::Edge Edge; |
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393 | typedef typename Graph::UndirEdge UndirEdge; |
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394 | |
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395 | typedef _WriterTraits WriterTraits; |
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396 | |
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397 | /// \brief Construct a new UndirGraphWriter. |
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398 | /// |
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399 | /// Construct a new UndirGraphWriter. It writes the given graph |
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400 | /// to the given stream. |
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401 | UndirGraphWriter(std::ostream& _os, const Graph& _graph) |
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402 | : writer(new LemonWriter(_os)), own_writer(true), |
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403 | nodeset_writer(*writer, _graph, std::string()), |
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404 | undir_edgeset_writer(*writer, _graph, nodeset_writer, std::string()), |
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405 | node_writer(*writer, nodeset_writer, std::string()), |
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406 | undir_edge_writer(*writer, undir_edgeset_writer, std::string()), |
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407 | attribute_writer(*writer, std::string()) {} |
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408 | |
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409 | /// \brief Construct a new UndirGraphWriter. |
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410 | /// |
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411 | /// Construct a new UndirGraphWriter. It writes the given graph |
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412 | /// to the given file. |
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413 | UndirGraphWriter(const std::string& _filename, const Graph& _graph) |
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414 | : writer(new LemonWriter(_filename)), own_writer(true), |
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415 | nodeset_writer(*writer, _graph, std::string()), |
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416 | undir_edgeset_writer(*writer, _graph, nodeset_writer, std::string()), |
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417 | node_writer(*writer, nodeset_writer, std::string()), |
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418 | undir_edge_writer(*writer, undir_edgeset_writer, std::string()), |
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419 | attribute_writer(*writer, std::string()) {} |
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420 | |
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421 | /// \brief Construct a new UndirGraphWriter. |
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422 | /// |
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423 | /// Construct a new UndirGraphWriter. It writes the given graph |
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424 | /// to given LemonReader. |
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425 | UndirGraphWriter(LemonWriter& _writer, const Graph& _graph) |
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426 | : writer(_writer), own_writer(false), |
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427 | nodeset_writer(*writer, _graph, std::string()), |
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428 | undir_edgeset_writer(*writer, _graph, nodeset_writer, std::string()), |
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429 | node_writer(*writer, nodeset_writer, std::string()), |
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430 | undir_edge_writer(*writer, undir_edgeset_writer, std::string()), |
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431 | attribute_writer(*writer, std::string()) {} |
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432 | |
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433 | /// \brief Destruct the graph writer. |
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434 | /// |
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435 | /// Destruct the graph writer. |
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436 | ~UndirGraphWriter() { |
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437 | if (own_writer) |
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438 | delete writer; |
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439 | } |
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440 | |
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441 | /// \brief Issue a new node map writing command to the writer. |
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442 | /// |
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443 | /// This function issues a new <i> node map writing command</i> to the writer. |
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444 | template <typename Map> |
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445 | UndirGraphWriter& writeNodeMap(std::string name, const Map& map) { |
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446 | nodeset_writer.writeNodeMap(name, map); |
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447 | return *this; |
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448 | } |
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449 | |
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450 | /// \brief Issue a new node map writing command to the writer. |
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451 | /// |
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452 | /// This function issues a new <i> node map writing command</i> to the writer. |
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453 | template <typename Writer, typename Map> |
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454 | UndirGraphWriter& writeNodeMap(std::string name, const Map& map, |
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455 | const Writer& writer = Writer()) { |
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456 | nodeset_writer.writeNodeMap(name, map, writer); |
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457 | return *this; |
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458 | } |
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459 | |
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460 | /// \brief Issue a new edge map writing command to the writer. |
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461 | /// |
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462 | /// This function issues a new <i> edge map writing command</i> to the writer. |
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463 | template <typename Map> |
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464 | UndirGraphWriter& writeEdgeMap(std::string name, const Map& map) { |
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465 | undir_edgeset_writer.writeEdgeMap(name, map); |
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466 | return *this; |
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467 | } |
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468 | |
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469 | /// \brief Issue a new edge map writing command to the writer. |
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470 | /// |
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471 | /// This function issues a new <i> edge map writing command</i> to the writer. |
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472 | template <typename Writer, typename Map> |
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473 | UndirGraphWriter& writeEdgeMap(std::string name, const Map& map, |
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474 | const Writer& writer = Writer()) { |
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475 | undir_edgeset_writer.writeEdgeMap(name, map, writer); |
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476 | return *this; |
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477 | } |
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478 | |
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479 | /// \brief Issue a new undirected edge map writing command to the writer. |
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480 | /// |
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481 | /// This function issues a new <i> undirected edge map writing |
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482 | /// command</i> to the writer. |
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483 | template <typename Map> |
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484 | UndirGraphWriter& writeUndirEdgeMap(std::string name, const Map& map) { |
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485 | undir_edgeset_writer.writeUndirEdgeMap(name, map); |
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486 | return *this; |
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487 | } |
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488 | |
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489 | /// \brief Issue a new undirected edge map writing command to the writer. |
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490 | /// |
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491 | /// This function issues a new <i> undirected edge map writing |
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492 | /// command</i> to the writer. |
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493 | template <typename Writer, typename Map> |
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494 | UndirGraphWriter& writeUndirEdgeMap(std::string name, const Map& map, |
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495 | const Writer& writer = Writer()) { |
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496 | undir_edgeset_writer.writeUndirEdgeMap(name, map, writer); |
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497 | return *this; |
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498 | } |
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499 | |
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500 | /// \brief Issue a new labeled node writer to the writer. |
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501 | /// |
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502 | /// This function issues a new <i> labeled node writing |
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503 | /// command</i> to the writer. |
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504 | UndirGraphWriter& writeNode(std::string name, const Node& node) { |
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505 | node_writer.writeNode(name, node); |
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506 | return *this; |
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507 | } |
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508 | |
---|
509 | /// \brief Issue a new labeled edge writer to the writer. |
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510 | /// |
---|
511 | /// This function issues a new <i> labeled edge writing |
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512 | /// command</i> to the writer. |
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513 | UndirGraphWriter& writeEdge(std::string name, const Edge& edge) { |
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514 | undir_edge_writer.writeEdge(name, edge); |
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515 | } |
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516 | |
---|
517 | /// \brief Issue a new labeled undirected edge writing command to |
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518 | /// the writer. |
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519 | /// |
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520 | /// Issue a new <i>labeled undirected edge writing command</i> to |
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521 | /// the writer. |
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522 | UndirGraphWriter& writeUndirEdge(std::string name, const UndirEdge& edge) { |
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523 | undir_edge_writer.writeUndirEdge(name, edge); |
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524 | } |
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525 | |
---|
526 | /// \brief Issue a new attribute writing command. |
---|
527 | /// |
---|
528 | /// This function issues a new <i> attribute writing |
---|
529 | /// command</i> to the writer. |
---|
530 | template <typename Value> |
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531 | UndirGraphWriter& writeAttribute(std::string name, const Value& value) { |
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532 | attribute_writer.writeAttribute(name, value); |
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533 | return *this; |
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534 | } |
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535 | |
---|
536 | /// \brief Issue a new attribute writing command. |
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537 | /// |
---|
538 | /// This function issues a new <i> attribute writing |
---|
539 | /// command</i> to the writer. |
---|
540 | template <typename Writer, typename Value> |
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541 | UndirGraphWriter& writeAttribute(std::string name, const Value& value, |
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542 | const Writer& writer) { |
---|
543 | attribute_writer.writeAttribute<Writer>(name, value, writer); |
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544 | return *this; |
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545 | } |
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546 | |
---|
547 | /// \brief Conversion operator to LemonWriter. |
---|
548 | /// |
---|
549 | /// Conversion operator to LemonWriter. It makes possible |
---|
550 | /// to access the encapsulated \e LemonWriter, this way |
---|
551 | /// you can attach to this writer new instances of |
---|
552 | /// \e LemonWriter::SectionWriter. |
---|
553 | operator LemonWriter&() { |
---|
554 | return *writer; |
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555 | } |
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556 | |
---|
557 | /// \brief Executes the writing commands. |
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558 | /// |
---|
559 | /// Executes the writing commands. |
---|
560 | void run() { |
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561 | writer->run(); |
---|
562 | } |
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563 | |
---|
564 | /// \brief Write the id of the given node. |
---|
565 | /// |
---|
566 | /// It writes the id of the given node. If there was written an "id" |
---|
567 | /// named node map then it will write the map value belonging to the node. |
---|
568 | void writeId(std::ostream& os, const Node& item) const { |
---|
569 | nodeset_writer.writeId(os, item); |
---|
570 | } |
---|
571 | |
---|
572 | /// \brief Write the id of the given edge. |
---|
573 | /// |
---|
574 | /// It writes the id of the given edge. If there was written an "id" |
---|
575 | /// named edge map then it will write the map value belonging to the edge. |
---|
576 | void writeId(std::ostream& os, const Edge& item) const { |
---|
577 | undir_edgeset_writer.writeId(os, item); |
---|
578 | } |
---|
579 | |
---|
580 | /// \brief Write the id of the given undirected edge. |
---|
581 | /// |
---|
582 | /// It writes the id of the given undirected edge. If there was written |
---|
583 | /// an "id" named edge map then it will write the map value belonging to |
---|
584 | /// the edge. |
---|
585 | void writeId(std::ostream& os, const UndirEdge& item) const { |
---|
586 | undir_edgeset_writer.writeId(os, item); |
---|
587 | } |
---|
588 | |
---|
589 | |
---|
590 | private: |
---|
591 | |
---|
592 | LemonWriter* writer; |
---|
593 | bool own_writer; |
---|
594 | |
---|
595 | NodeSetWriter<Graph, WriterTraits> nodeset_writer; |
---|
596 | UndirEdgeSetWriter<Graph, WriterTraits> undir_edgeset_writer; |
---|
597 | |
---|
598 | NodeWriter<Graph> node_writer; |
---|
599 | UndirEdgeWriter<Graph> undir_edge_writer; |
---|
600 | |
---|
601 | AttributeWriter<WriterTraits> attribute_writer; |
---|
602 | }; |
---|
603 | |
---|
604 | /// \brief Write an undirected graph to the output. |
---|
605 | /// |
---|
606 | /// It is a helper function to write an undirected graph to the given output |
---|
607 | /// stream. It gives back an UndirGraphWriter object and this object |
---|
608 | /// can write more maps, labeled nodes and edges and attributes. |
---|
609 | /// \warning Do not forget to call the \c run() function. |
---|
610 | /// |
---|
611 | /// \param os The output stream. |
---|
612 | /// \param g The graph. |
---|
613 | template <typename Graph> |
---|
614 | UndirGraphWriter<Graph> undirGraphWriter(std::ostream& os, const Graph &g) { |
---|
615 | return UndirGraphWriter<Graph>(os, g); |
---|
616 | } |
---|
617 | |
---|
618 | /// \brief Write an undirected graph to the output. |
---|
619 | /// |
---|
620 | /// It is a helper function to write an undirected graph to the given output |
---|
621 | /// file. It gives back an UndirGraphWriter object and this object |
---|
622 | /// can write more maps, labeled nodes, edges, undirected edges and |
---|
623 | /// attributes. |
---|
624 | /// |
---|
625 | /// \warning Do not forget to call the \c run() function. |
---|
626 | /// |
---|
627 | /// \param fn The output file. |
---|
628 | /// \param g The graph. |
---|
629 | template <typename Graph> |
---|
630 | UndirGraphWriter<Graph> undirGraphWriter(const std::string& fn, |
---|
631 | const Graph &g) { |
---|
632 | return UndirGraphWriter<Graph>(fn, g); |
---|
633 | } |
---|
634 | |
---|
635 | /// @} |
---|
636 | |
---|
637 | } |
---|
638 | |
---|
639 | #endif |
---|