[1137] | 1 | /* -*- C++ -*- |
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| 2 | * src/lemon/graph_writer.h - Part of LEMON, a generic C++ optimization library |
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| 3 | * |
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[1164] | 4 | * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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[1137] | 5 | * (Egervary Combinatorial Optimization Research Group, 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 gio |
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| 18 | ///\file |
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| 19 | ///\brief Graph writer. |
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| 20 | |
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| 21 | |
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| 22 | #include <iostream> |
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| 23 | #include <sstream> |
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| 24 | |
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| 25 | #include <map> |
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| 26 | #include <vector> |
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| 27 | |
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| 28 | #include <memory> |
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| 29 | |
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[1208] | 30 | #include <lemon/map_utils.h> |
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[1137] | 31 | #include <lemon/invalid.h> |
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| 32 | #include <lemon/error.h> |
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| 33 | |
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| 34 | |
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| 35 | namespace lemon { |
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| 36 | |
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| 37 | /// \brief Standard WriterTraits for the GraphWriter class. |
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| 38 | /// |
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| 39 | /// Standard WriterTraits for the GraphWriter class. |
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| 40 | /// It defines standard writing method for all type of value. |
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| 41 | struct DefaultWriterTraits { |
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| 42 | |
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| 43 | /// \brief Template class for writing an value. |
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| 44 | /// |
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| 45 | /// Template class for writing an value. |
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| 46 | template <typename _Value> |
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| 47 | struct Writer { |
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| 48 | /// The value type. |
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| 49 | typedef _Value Value; |
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| 50 | |
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[1188] | 51 | /// \brief Writes a value to the given stream. |
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[1137] | 52 | /// |
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[1188] | 53 | /// Writes a value to the given stream. |
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[1137] | 54 | void write(std::ostream& os, const Value& value) { |
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| 55 | os << value << '\t'; |
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| 56 | } |
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| 57 | }; |
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| 58 | |
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| 59 | }; |
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| 60 | |
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| 61 | |
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| 62 | /// \brief Writer class for quoted strings. |
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| 63 | /// |
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| 64 | /// Writer class for quoted strings. It can process the escape |
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| 65 | /// sequences in the string. |
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| 66 | class QuotedStringWriter { |
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| 67 | public: |
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| 68 | typedef std::string Value; |
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| 69 | |
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| 70 | /// \brief Constructor for the writer. |
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| 71 | /// |
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| 72 | /// Constructor for the writer. If the given parameter is true |
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| 73 | /// the writer creates escape sequences from special characters. |
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| 74 | QuotedStringWriter(bool _escaped = true) : escaped(_escaped) {} |
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| 75 | |
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[1188] | 76 | /// \brief Writes a quoted string to the given stream. |
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[1137] | 77 | /// |
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[1188] | 78 | /// Writes a quoted string to the given stream. |
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[1137] | 79 | void write(std::ostream& os, const std::string& value) { |
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| 80 | os << "\""; |
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| 81 | if (escaped) { |
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| 82 | ostringstream ls; |
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| 83 | for (int i = 0; i < (int)value.size(); ++i) { |
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| 84 | writeEscape(ls, value[i]); |
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| 85 | } |
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| 86 | os << ls.str(); |
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| 87 | } else { |
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| 88 | os << value; |
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| 89 | } |
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| 90 | os << "\""; |
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| 91 | } |
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| 92 | |
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| 93 | private: |
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| 94 | |
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| 95 | static void writeEscape(std::ostream& os, char c) { |
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| 96 | switch (c) { |
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| 97 | case '\\': |
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| 98 | os << "\\\\"; |
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| 99 | return; |
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| 100 | case '\"': |
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| 101 | os << "\\\""; |
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| 102 | return; |
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| 103 | case '\'': |
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| 104 | os << "\\\'"; |
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| 105 | return; |
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| 106 | case '\?': |
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| 107 | os << "\\\?"; |
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| 108 | return; |
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| 109 | case '\a': |
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| 110 | os << "\\a"; |
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| 111 | return; |
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| 112 | case '\b': |
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| 113 | os << "\\b"; |
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| 114 | return; |
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| 115 | case '\f': |
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| 116 | os << "\\f"; |
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| 117 | return; |
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| 118 | case '\r': |
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| 119 | os << "\\r"; |
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| 120 | return; |
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| 121 | case '\n': |
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| 122 | os << "\\n"; |
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| 123 | return; |
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| 124 | case '\t': |
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| 125 | os << "\\t"; |
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| 126 | return; |
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| 127 | case '\v': |
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| 128 | os << "\\v"; |
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| 129 | return; |
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| 130 | default: |
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| 131 | if (c < 0x20) { |
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| 132 | os << '\\' << oct << (int)c; |
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| 133 | } else { |
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| 134 | os << c; |
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| 135 | } |
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| 136 | return; |
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| 137 | } |
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| 138 | } |
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| 139 | private: |
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| 140 | bool escaped; |
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| 141 | }; |
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| 142 | |
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| 143 | |
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| 144 | /// \brief The graph writer class. |
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| 145 | /// |
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| 146 | /// The writer class for the graph output. |
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[1138] | 147 | /// \see \ref GraphReader |
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| 148 | /// \see \ref graph-io-page |
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[1137] | 149 | template <typename _Graph, typename _WriterTraits = DefaultWriterTraits> |
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| 150 | class GraphWriter { |
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| 151 | public: |
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| 152 | |
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| 153 | typedef _Graph Graph; |
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| 154 | typedef typename Graph::Node Node; |
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| 155 | typedef typename Graph::NodeIt NodeIt; |
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| 156 | typedef typename Graph::Edge Edge; |
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| 157 | typedef typename Graph::EdgeIt EdgeIt; |
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| 158 | |
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| 159 | typedef _WriterTraits WriterTraits; |
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| 160 | |
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| 161 | /// \brief Construct a new GraphWriter. |
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| 162 | /// |
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| 163 | /// Construct a new GraphWriter. It writes from the given map, |
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| 164 | /// it constructs the given map and it use the given writer as the |
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| 165 | /// default skipper. |
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[1208] | 166 | GraphWriter(std::ostream& _os, const Graph& _graph) |
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| 167 | : os(_os), graph(_graph) {} |
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[1137] | 168 | |
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| 169 | |
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| 170 | /// \brief Destruct the graph writer. |
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| 171 | /// |
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| 172 | /// Destruct the graph writer. |
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| 173 | ~GraphWriter() { |
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| 174 | for (typename NodeMapWriters::iterator it = node_map_writers.begin(); |
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| 175 | it != node_map_writers.end(); ++it) { |
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| 176 | delete it->second; |
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| 177 | } |
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| 178 | |
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| 179 | for (typename EdgeMapWriters::iterator it = edge_map_writers.begin(); |
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| 180 | it != edge_map_writers.end(); ++it) { |
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| 181 | delete it->second; |
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| 182 | } |
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| 183 | |
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| 184 | } |
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| 185 | |
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| 186 | // Node map rules |
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| 187 | |
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| 188 | /// \brief Add a new node map writer command for the writer. |
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| 189 | /// |
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| 190 | /// Add a new node map writer command for the writer. |
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| 191 | template <typename Map> |
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| 192 | GraphWriter& addNodeMap(std::string name, const Map& map) { |
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| 193 | return addNodeMap<typename WriterTraits::template Writer< |
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| 194 | typename Map::Value>, Map>(name, map); |
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| 195 | } |
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| 196 | |
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| 197 | /// \brief Add a new node map writer command for the writer. |
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| 198 | /// |
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| 199 | /// Add a new node map writer command for the writer. |
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| 200 | template <typename Writer, typename Map> |
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| 201 | GraphWriter& addNodeMap(std::string name, const Map& map, |
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| 202 | const Writer& writer = Writer()) { |
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| 203 | node_map_writers.push_back( |
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| 204 | make_pair(name, new MapWriter<Node, Map, Writer>(map, writer))); |
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| 205 | return *this; |
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| 206 | } |
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| 207 | |
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| 208 | // Edge map rules |
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| 209 | |
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| 210 | /// \brief Add a new edge map writer command for the writer. |
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| 211 | /// |
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| 212 | /// Add a new edge map writer command for the writer. |
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| 213 | template <typename Map> |
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| 214 | GraphWriter& addEdgeMap(std::string name, const Map& map) { |
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| 215 | return addEdgeMap<typename WriterTraits::template Writer< |
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| 216 | typename Map::Value>, Map>(name, map); |
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| 217 | } |
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| 218 | |
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| 219 | |
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| 220 | /// \brief Add a new edge map writer command for the writer. |
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| 221 | /// |
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| 222 | /// Add a new edge map writer command for the writer. |
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| 223 | template <typename Writer, typename Map> |
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| 224 | GraphWriter& addEdgeMap(std::string name, |
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| 225 | const Map& map, const Writer& writer = Writer()) { |
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| 226 | edge_map_writers.push_back(make_pair(name, |
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| 227 | new MapWriter<Edge, Map, Writer>(map, writer))); |
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| 228 | return *this; |
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| 229 | } |
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| 230 | |
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| 231 | /// \brief Add a new labeled node writer for the writer. |
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| 232 | /// |
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| 233 | /// Add a new labeled node writer for the writer. |
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| 234 | GraphWriter& addNode(std::string name, const Node& node) { |
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| 235 | node_writers.push_back(make_pair(name, node)); |
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| 236 | return *this; |
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| 237 | } |
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| 238 | |
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| 239 | /// \brief Add a new labeled edge writer for the writer. |
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| 240 | /// |
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| 241 | /// Add a new labeled edge writer for the writer. |
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| 242 | GraphWriter& addEdge(std::string name, const Edge& edge) { |
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| 243 | edge_writers.push_back(make_pair(name, edge)); |
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| 244 | return *this; |
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| 245 | } |
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| 246 | |
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| 247 | /// \brief Executes the writer commands. |
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| 248 | /// |
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| 249 | /// Executes the writer commands. |
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| 250 | void run() { |
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| 251 | writeNodeSet(); |
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| 252 | writeEdgeSet(); |
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| 253 | writeNodes(); |
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| 254 | writeEdges(); |
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| 255 | os << "@end" << std::endl; |
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| 256 | } |
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| 257 | |
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| 258 | private: |
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| 259 | |
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| 260 | void writeNodeSet() { |
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| 261 | if (node_map_writers.size() == 0) return; |
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| 262 | os << "@nodeset" << std::endl; |
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| 263 | for (int i = 0; i < (int)node_map_writers.size(); ++i) { |
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| 264 | os << node_map_writers[i].first << '\t'; |
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| 265 | } |
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| 266 | os << std::endl; |
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| 267 | for (NodeIt it(graph); it != INVALID; ++it) { |
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| 268 | for (int i = 0; i < (int)node_map_writers.size(); ++i) { |
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| 269 | node_map_writers[i].second->write(os, it); |
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| 270 | } |
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| 271 | os << std::endl; |
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| 272 | } |
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| 273 | |
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| 274 | } |
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| 275 | |
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| 276 | void writeEdgeSet() { |
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| 277 | if (edge_map_writers.size() == 0) return; |
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| 278 | if (node_map_writers.size() == 0) { |
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[1188] | 279 | // ErrorMessage message; |
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| 280 | // message << "Missing node id map"; |
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| 281 | // throw IOLogicError(message); |
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[1137] | 282 | } |
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| 283 | os << "@edgeset" << std::endl; |
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| 284 | os << "\t\t"; |
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| 285 | for (int i = 0; i < (int)edge_map_writers.size(); ++i) { |
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| 286 | os << edge_map_writers[i].first << '\t'; |
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| 287 | } |
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| 288 | os << std::endl; |
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| 289 | for (EdgeIt it(graph); it != INVALID; ++it) { |
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| 290 | node_map_writers[0].second->write(os, graph.source(it)); |
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| 291 | node_map_writers[0].second->write(os, graph.target(it)); |
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| 292 | for (int i = 0; i < (int)edge_map_writers.size(); ++i) { |
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| 293 | edge_map_writers[i].second->write(os, it); |
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| 294 | } |
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| 295 | os << std::endl; |
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| 296 | } |
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| 297 | } |
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| 298 | |
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| 299 | void writeNodes() { |
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| 300 | if (node_writers.size() == 0) return; |
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| 301 | if (node_map_writers.size() == 0) { |
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[1188] | 302 | // throw Exception() << "Missing node id map"; |
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[1137] | 303 | } |
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| 304 | os << "@nodes" << std::endl; |
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| 305 | for (int i = 0; i < (int)node_writers.size(); ++i) { |
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| 306 | os << node_writers[i].first << '\t'; |
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| 307 | node_map_writers[0].second->write(os, node_writers[i].second); |
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| 308 | os << std::endl; |
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| 309 | } |
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| 310 | } |
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| 311 | |
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| 312 | void writeEdges() { |
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| 313 | if (edge_writers.size() == 0) return; |
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| 314 | if (edge_map_writers.size() == 0) { |
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[1188] | 315 | // throw Exception() << "Missing edge id map"; |
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[1137] | 316 | } |
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| 317 | os << "@edges" << std::endl; |
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| 318 | for (int i = 0; i < (int)edge_writers.size(); ++i) { |
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| 319 | os << edge_writers[i].first << '\t'; |
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| 320 | edge_map_writers[0].second->write(os, edge_writers[i].second); |
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| 321 | os << std::endl; |
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| 322 | } |
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| 323 | } |
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| 324 | |
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| 325 | // Writers |
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| 326 | |
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| 327 | template <class _Item> |
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| 328 | class WriterBase { |
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| 329 | public: |
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| 330 | typedef _Item Item; |
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| 331 | virtual void write(std::ostream&, const Item&) = 0; |
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| 332 | }; |
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| 333 | |
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| 334 | template <class _Item, typename _Map, typename _Writer> |
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| 335 | class MapWriter : public WriterBase<_Item> { |
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| 336 | public: |
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| 337 | typedef _Map Map; |
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| 338 | typedef _Writer Writer; |
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| 339 | typedef typename Writer::Value Value; |
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| 340 | typedef _Item Item; |
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| 341 | |
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| 342 | const Map& map; |
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| 343 | Writer writer; |
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| 344 | |
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| 345 | MapWriter(const Map& _map, const Writer& _writer) |
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| 346 | : map(_map), writer(_writer) {} |
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| 347 | |
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| 348 | |
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| 349 | virtual void write(std::ostream& os, const Item& item) { |
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| 350 | writer.write(os, map[item]); |
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| 351 | } |
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| 352 | |
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| 353 | }; |
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| 354 | |
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| 355 | |
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| 356 | |
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| 357 | typedef std::vector< std::pair<std::string, WriterBase<Node>*> > |
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| 358 | NodeMapWriters; |
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| 359 | NodeMapWriters node_map_writers; |
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| 360 | |
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| 361 | typedef std::vector< std::pair<std::string, WriterBase<Edge>*> > |
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| 362 | EdgeMapWriters; |
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| 363 | EdgeMapWriters edge_map_writers; |
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| 364 | |
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| 365 | typedef std::vector<std::pair<std::string, Node> > NodeWriters; |
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| 366 | NodeWriters node_writers; |
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| 367 | |
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| 368 | typedef std::vector<std::pair<std::string, Edge> > EdgeWriters; |
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| 369 | EdgeWriters edge_writers; |
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| 370 | |
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| 371 | std::ostream& os; |
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[1208] | 372 | const Graph& graph; |
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[1137] | 373 | |
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| 374 | }; |
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| 375 | |
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[1208] | 376 | /// Ready to use writer function. |
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| 377 | template<typename Graph, typename CapacityMap, typename CostMap> |
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| 378 | void writeGraph(std::ostream& os, const Graph &g, |
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| 379 | const CapacityMap& capacity, const typename Graph::Node &s, |
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| 380 | const typename Graph::Node &t, const CostMap& cost) { |
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| 381 | GraphWriter<Graph> reader(os, g); |
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| 382 | IdMap<Graph, typename Graph::Node> nodeIdMap(g); |
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| 383 | reader.addNodeMap("id", nodeIdMap); |
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| 384 | IdMap<Graph, typename Graph::Edge> edgeIdMap(g); |
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| 385 | reader.addEdgeMap("id", edgeIdMap); |
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| 386 | reader.addEdgeMap("capacity", capacity); |
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| 387 | reader.addEdgeMap("cost", cost); |
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| 388 | reader.addNode("source", s); |
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| 389 | reader.addNode("target", t); |
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| 390 | reader.run(); |
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| 391 | } |
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| 392 | |
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| 393 | /// Ready to use writer function. |
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| 394 | template<typename Graph, typename CapacityMap, typename CostMap> |
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| 395 | void writeGraph(std::ostream& os, const Graph &g, |
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| 396 | const CapacityMap& capacity, const typename Graph::Node &s, |
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| 397 | const typename Graph::Node &t) { |
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| 398 | GraphWriter<Graph> reader(os, g); |
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| 399 | IdMap<Graph, typename Graph::Node> nodeIdMap(g); |
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| 400 | reader.addNodeMap("id", nodeIdMap); |
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| 401 | IdMap<Graph, typename Graph::Edge> edgeIdMap(g); |
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| 402 | reader.addEdgeMap("id", edgeIdMap); |
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| 403 | reader.addEdgeMap("capacity", capacity); |
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| 404 | reader.addNode("source", s); |
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| 405 | reader.addNode("target", t); |
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| 406 | reader.run(); |
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| 407 | } |
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| 408 | |
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| 409 | /// Ready to use writer function. |
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| 410 | template<typename Graph, typename CapacityMap> |
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| 411 | void writeGraph(std::ostream& os, const Graph &g, |
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| 412 | const CapacityMap& capacity, const typename Graph::Node &s) { |
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| 413 | GraphWriter<Graph> reader(os, g); |
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| 414 | IdMap<Graph, typename Graph::Node> nodeIdMap(g); |
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| 415 | reader.addNodeMap("id", nodeIdMap); |
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| 416 | IdMap<Graph, typename Graph::Edge> edgeIdMap(g); |
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| 417 | reader.addEdgeMap("id", edgeIdMap); |
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| 418 | reader.addEdgeMap("capacity", capacity); |
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| 419 | reader.addNode("source", s); |
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| 420 | reader.run(); |
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| 421 | } |
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| 422 | /// Ready to use writer function. |
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| 423 | template<typename Graph, typename CapacityMap> |
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| 424 | void writeGraph(std::ostream& os, const Graph &g, |
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| 425 | const CapacityMap& capacity) { |
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| 426 | GraphWriter<Graph> reader(os, g); |
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| 427 | IdMap<Graph, typename Graph::Node> nodeIdMap(g); |
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| 428 | reader.addNodeMap("id", nodeIdMap); |
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| 429 | IdMap<Graph, typename Graph::Edge> edgeIdMap(g); |
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| 430 | reader.addEdgeMap("id", edgeIdMap); |
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| 431 | reader.addEdgeMap("capacity", capacity); |
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| 432 | reader.run(); |
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| 433 | } |
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| 434 | /// Ready to use writer function. |
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| 435 | template<typename Graph> |
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| 436 | void writeGraph(std::ostream& os, const Graph &g) { |
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| 437 | GraphWriter<Graph> reader(os, g); |
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| 438 | IdMap<Graph, typename Graph::Node> nodeIdMap(g); |
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| 439 | reader.addNodeMap("id", nodeIdMap); |
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| 440 | IdMap<Graph, typename Graph::Edge> edgeIdMap(g); |
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| 441 | reader.addEdgeMap("id", edgeIdMap); |
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| 442 | reader.run(); |
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| 443 | } |
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| 444 | |
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[1137] | 445 | |
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| 446 | } |
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