1 | /* -*- C++ -*- |
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2 | * src/lemon/graph_reader.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 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 reader. |
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20 | |
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21 | #include <iostream> |
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22 | #include <sstream> |
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23 | |
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24 | #include <map> |
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25 | #include <vector> |
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26 | |
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27 | #include <memory> |
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28 | |
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29 | #include <lemon/error.h> |
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30 | |
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31 | /// \todo fix exceptions |
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32 | |
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33 | |
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34 | namespace lemon { |
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35 | |
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36 | // Exceptions |
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37 | |
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38 | |
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39 | /// \brief Standard ReaderTraits for the GraphReader class. |
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40 | /// |
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41 | /// Standard ReaderTraits for the GraphReader class. |
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42 | /// It defines standard reading method for all type of value. |
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43 | struct DefaultReaderTraits { |
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44 | |
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45 | /// \brief Template class for reading an value. |
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46 | /// |
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47 | /// Template class for reading an value. |
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48 | template <typename _Value> |
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49 | struct Reader { |
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50 | /// The value type. |
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51 | typedef _Value Value; |
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52 | /// \brief Reads a value from the given stream. |
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53 | /// |
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54 | /// Reads a value from the given stream. |
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55 | void read(std::istream& is, Value& value) { |
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56 | if (!(is >> value)) |
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57 | throw DataFormatError("Default reader format exception"); |
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58 | } |
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59 | }; |
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60 | |
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61 | /// The reader class for the not needed maps. |
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62 | typedef Reader<std::string> DefaultReader; |
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63 | |
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64 | }; |
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65 | |
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66 | /// \brief Reader class for quoted strings. |
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67 | /// |
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68 | /// Reader class for quoted strings. It can process the escape |
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69 | /// sequences in the string. |
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70 | class QuotedStringReader { |
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71 | public: |
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72 | typedef std::string Value; |
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73 | |
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74 | /// \brief Constructor for the reader. |
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75 | /// |
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76 | /// Constructor for the reader. If the given parameter is true |
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77 | /// the reader processes the escape sequences. |
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78 | QuotedStringReader(bool _escaped = true) : escaped(_escaped) {} |
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79 | |
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80 | /// \brief Reads a quoted string from the given stream. |
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81 | /// |
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82 | /// Reads a quoted string from the given stream. |
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83 | void read(std::istream& is, std::string& value) { |
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84 | char c; |
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85 | value.clear(); |
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86 | is >> ws; |
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87 | if (!is.get(c) || c != '\"') |
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88 | throw DataFormatError("Quoted string format error"); |
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89 | while (is.get(c) && c != '\"') { |
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90 | if (escaped && c == '\\') { |
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91 | value += readEscape(is); |
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92 | } else { |
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93 | value += c; |
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94 | } |
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95 | } |
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96 | if (!is) throw DataFormatError("Quoted string format error"); |
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97 | } |
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98 | |
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99 | private: |
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100 | |
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101 | static char readEscape(std::istream& is) { |
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102 | char c; |
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103 | switch (is.get(c), c) { |
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104 | case '\\': |
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105 | return '\\'; |
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106 | case '\"': |
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107 | return '\"'; |
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108 | case '\'': |
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109 | return '\''; |
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110 | case '\?': |
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111 | return '\?'; |
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112 | case 'a': |
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113 | return '\a'; |
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114 | case 'b': |
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115 | return '\b'; |
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116 | case 'f': |
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117 | return '\f'; |
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118 | case 'n': |
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119 | return '\n'; |
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120 | case 'r': |
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121 | return '\r'; |
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122 | case 't': |
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123 | return '\t'; |
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124 | case 'v': |
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125 | return '\v'; |
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126 | case 'x': |
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127 | { |
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128 | int code; |
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129 | if (!is.get(c) || !isHex(c)) |
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130 | throw DataFormatError("Escape format error"); |
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131 | else if (code = valueHex(c), !is.get(c) || !isHex(c)) is.putback(c); |
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132 | else code = code * 16 + valueHex(c); |
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133 | return code; |
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134 | } |
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135 | default: |
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136 | { |
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137 | int code; |
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138 | if (!isOct(c)) |
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139 | throw DataFormatError("Escape format error"); |
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140 | else if (code = valueOct(c), !is.get(c) || !isOct(c)) |
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141 | is.putback(c); |
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142 | else if (code = code * 8 + valueOct(c), !is.get(c) || !isOct(c)) |
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143 | is.putback(c); |
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144 | else code = code * 8 + valueOct(c); |
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145 | return code; |
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146 | } |
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147 | } |
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148 | } |
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149 | |
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150 | static bool isOct(char c) { |
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151 | return '0' <= c && c <='7'; |
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152 | } |
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153 | |
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154 | static int valueOct(char c) { |
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155 | return c - '0'; |
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156 | } |
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157 | |
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158 | static bool isHex(char c) { |
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159 | return ('0' <= c && c <= '9') || |
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160 | ('a' <= c && c <= 'z') || |
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161 | ('A' <= c && c <= 'Z'); |
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162 | } |
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163 | |
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164 | static int valueHex(char c) { |
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165 | if ('0' <= c && c <= '9') return c - '0'; |
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166 | if ('a' <= c && c <= 'z') return c - 'a' + 10; |
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167 | return c - 'A' + 10; |
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168 | } |
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169 | |
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170 | bool escaped; |
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171 | }; |
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172 | |
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173 | /// \brief The graph reader class. |
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174 | /// |
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175 | /// The reader class for the graph input. |
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176 | /// \see \ref GraphWriter |
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177 | /// \see \ref graph-io-page |
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178 | template <typename _Graph, typename _ReaderTraits = DefaultReaderTraits> |
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179 | class GraphReader { |
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180 | public: |
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181 | |
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182 | typedef _Graph Graph; |
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183 | typedef typename Graph::Node Node; |
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184 | typedef typename Graph::Edge Edge; |
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185 | |
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186 | typedef _ReaderTraits ReaderTraits; |
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187 | typedef typename ReaderTraits::DefaultReader DefaultReader; |
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188 | |
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189 | /// \brief Construct a new GraphReader. |
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190 | /// |
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191 | /// Construct a new GraphReader. It reads into the given graph |
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192 | /// and it use the given reader as the default skipper. |
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193 | GraphReader(std::istream& _is, Graph& _graph, |
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194 | const DefaultReader& _reader = DefaultReader()) |
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195 | : is(_is), graph(_graph), nodeSkipper(_reader), edgeSkipper(_reader) {} |
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196 | |
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197 | /// \brief Destruct the graph reader. |
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198 | /// |
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199 | /// Destruct the graph reader. |
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200 | ~GraphReader() { |
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201 | |
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202 | for (typename NodeMapReaders::iterator it = node_map_readers.begin(); |
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203 | it != node_map_readers.end(); ++it) { |
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204 | delete it->second; |
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205 | } |
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206 | |
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207 | for (typename EdgeMapReaders::iterator it = edge_map_readers.begin(); |
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208 | it != edge_map_readers.end(); ++it) { |
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209 | delete it->second; |
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210 | } |
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211 | |
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212 | } |
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213 | |
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214 | /// \brief Add a new node map reader command for the reader. |
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215 | /// |
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216 | /// Add a new node map reader command for the reader. |
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217 | template <typename Map> |
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218 | GraphReader& addNodeMap(std::string name, Map& map) { |
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219 | return addNodeMap<typename ReaderTraits::template |
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220 | Reader<typename Map::Value>, Map>(name, map); |
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221 | } |
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222 | |
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223 | /// \brief Add a new node map reader command for the reader. |
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224 | /// |
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225 | /// Add a new node map reader command for the reader. |
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226 | template <typename Reader, typename Map> |
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227 | GraphReader& addNodeMap(std::string name, Map& map, |
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228 | const Reader& reader = Reader()) { |
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229 | if (node_map_readers.find(name) != node_map_readers.end()) { |
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230 | ErrorMessage msg; |
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231 | msg << "Multiple read rule for node map: " << name; |
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232 | throw IOLogicError(msg.message()); |
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233 | } |
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234 | node_map_readers.insert( |
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235 | make_pair(name, new MapReader<Node, Map, Reader>(map, reader))); |
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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 node map skipper command for the reader. |
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240 | /// |
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241 | /// Add a new node map skipper command for the reader. |
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242 | template <typename Reader> |
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243 | GraphReader& skipNodeMap(std::string name, |
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244 | const Reader& reader = Reader()) { |
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245 | if (node_map_readers.find(name) != node_map_readers.end()) { |
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246 | ErrorMessage msg; |
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247 | msg << "Multiple read rule for node map: " << name; |
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248 | throw IOLogicError(msg.message()); |
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249 | } |
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250 | node_map_readers.insert( |
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251 | make_pair(name, new SkipReader<Node, Reader>(reader))); |
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252 | return *this; |
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253 | } |
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254 | |
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255 | /// \brief Add a new edge map reader command for the reader. |
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256 | /// |
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257 | /// Add a new edge map reader command for the reader. |
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258 | template <typename Map> |
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259 | GraphReader& addEdgeMap(std::string name, Map& map) { |
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260 | return addEdgeMap<typename ReaderTraits::template |
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261 | Reader<typename Map::Value>, Map>(name, map); |
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262 | } |
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263 | |
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264 | |
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265 | /// \brief Add a new edge map reader command for the reader. |
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266 | /// |
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267 | /// Add a new edge map reader command for the reader. |
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268 | template <typename Reader, typename Map> |
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269 | GraphReader& addEdgeMap(std::string name, Map& map, |
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270 | const Reader& reader = Reader()) { |
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271 | if (edge_map_readers.find(name) != edge_map_readers.end()) { |
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272 | ErrorMessage msg; |
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273 | msg << "Multiple read rule for edge map: " << name; |
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274 | throw IOLogicError(msg.message()); |
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275 | } |
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276 | edge_map_readers.insert( |
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277 | make_pair(name, new MapReader<Edge, Map, Reader>(map, reader))); |
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278 | return *this; |
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279 | } |
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280 | |
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281 | /// \brief Add a new edge map skipper command for the reader. |
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282 | /// |
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283 | /// Add a new edge map skipper command for the reader. |
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284 | template <typename Reader> |
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285 | GraphReader& skipEdgeMap(std::string name, |
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286 | const Reader& reader = Reader()) { |
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287 | if (edge_map_readers.find(name) != edge_map_readers.end()) { |
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288 | ErrorMessage msg; |
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289 | msg << "Multiple read rule for edge map: " << name; |
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290 | throw IOLogicError(msg.message()); |
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291 | } |
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292 | edge_map_readers.insert( |
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293 | make_pair(name, new SkipReader<Edge, Reader>(reader))); |
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294 | return *this; |
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295 | } |
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296 | |
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297 | /// \brief Add a new labeled node reader for the reader. |
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298 | /// |
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299 | /// Add a new labeled node reader for the reader. |
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300 | GraphReader& addNode(std::string name, Node& node) { |
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301 | if (node_readers.find(name) != node_readers.end()) { |
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302 | ErrorMessage msg; |
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303 | msg << "Multiple read rule for node: " << name; |
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304 | throw IOLogicError(msg.message()); |
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305 | } |
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306 | node_readers.insert(make_pair(name, &node)); |
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307 | return *this; |
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308 | } |
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309 | |
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310 | /// \brief Add a new labeled edge reader for the reader. |
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311 | /// |
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312 | /// Add a new labeled edge reader for the reader. |
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313 | GraphReader& addEdge(std::string name, Edge& edge) { |
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314 | if (edge_readers.find(name) != edge_readers.end()) { |
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315 | ErrorMessage msg; |
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316 | msg << "Multiple read rule for edge: " << name; |
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317 | throw IOLogicError(msg.message()); |
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318 | } |
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319 | edge_readers.insert(make_pair(name, &edge)); |
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320 | return *this; |
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321 | } |
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322 | |
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323 | /// \brief Executes the reader commands. |
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324 | /// |
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325 | /// Executes the reader commands. |
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326 | void run() { |
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327 | int line_num = 0; |
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328 | std::auto_ptr<InverterBase<Node> > nodeInverter; |
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329 | std::auto_ptr<InverterBase<Edge> > edgeInverter; |
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330 | try { |
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331 | std::string line = readNotEmptyLine(is, line_num); |
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332 | if (line.find("@nodeset") == 0) { |
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333 | line = readNodeSet(line_num, nodeInverter); |
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334 | } |
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335 | if (line.find("@edgeset") == 0) { |
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336 | line = readEdgeSet(line_num, edgeInverter, nodeInverter); |
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337 | } |
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338 | if (line.find("@nodes") == 0) { |
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339 | line = readNodes(line_num, nodeInverter); |
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340 | } |
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341 | if (line.find("@edges") == 0) { |
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342 | line = readEdges(line_num, edgeInverter); |
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343 | } |
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344 | if (line.find("@end") != 0) { |
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345 | throw DataFormatError("Invalid control sequence error"); |
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346 | } |
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347 | } catch (DataFormatError e) { |
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348 | e.line(line_num); |
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349 | throw e; |
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350 | } |
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351 | } |
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352 | |
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353 | private: |
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354 | |
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355 | template <typename Item> class InverterBase; |
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356 | |
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357 | std::string readNodeSet(int& line_num, |
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358 | auto_ptr<InverterBase<Node> > & nodeInverter) { |
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359 | std::vector<ReaderBase<Node>* > index; |
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360 | { |
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361 | std::string line = readNotEmptyLine(is, line_num); |
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362 | std::string id; |
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363 | std::istringstream ls(line); |
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364 | while (ls >> id) { |
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365 | if (id[0] == '#') break; |
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366 | typename NodeMapReaders::iterator it = node_map_readers.find(id); |
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367 | if (it != node_map_readers.end()) { |
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368 | index.push_back(it->second); |
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369 | node_map_readers.erase(it); |
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370 | } else { |
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371 | index.push_back(&nodeSkipper); |
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372 | } |
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373 | } |
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374 | } |
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375 | |
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376 | if (index.size() == 0) { |
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377 | throw DataFormatError("Cannot find node id map"); |
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378 | } |
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379 | |
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380 | nodeInverter = auto_ptr<InverterBase<Node> >(index[0]->getInverter()); |
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381 | std::string line; |
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382 | while (line = readNotEmptyLine(is, line_num), line[0] != '@') { |
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383 | Node node = graph.addNode(); |
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384 | std::istringstream ls(line); |
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385 | nodeInverter->read(ls, node); |
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386 | for (int i = 1; i < (int)index.size(); ++i) { |
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387 | index[i]->read(ls, node); |
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388 | } |
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389 | } |
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390 | return line; |
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391 | } |
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392 | |
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393 | std::string readEdgeSet(int& line_num, |
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394 | auto_ptr<InverterBase<Edge> > & edgeInverter, |
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395 | auto_ptr<InverterBase<Node> > & nodeInverter) { |
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396 | std::vector<ReaderBase<Edge>*> index; |
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397 | { |
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398 | std::string line = readNotEmptyLine(is, line_num); |
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399 | std::string id; |
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400 | std::istringstream ls(line); |
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401 | while (ls >> id) { |
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402 | if (id[0] == '#') break; |
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403 | typename EdgeMapReaders::iterator it = edge_map_readers.find(id); |
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404 | if (it != edge_map_readers.end()) { |
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405 | index.push_back(it->second); |
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406 | edge_map_readers.erase(it); |
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407 | } else { |
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408 | index.push_back(&edgeSkipper); |
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409 | } |
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410 | } |
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411 | } |
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412 | |
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413 | if (index.size() == 0) { |
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414 | throw DataFormatError("Cannot find edge id map"); |
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415 | } |
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416 | |
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417 | edgeInverter = auto_ptr<InverterBase<Edge> >(index[0]->getInverter()); |
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418 | std::string line; |
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419 | while (line = readNotEmptyLine(is, line_num), line[0] != '@') { |
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420 | std::istringstream ls(line); |
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421 | Node source = nodeInverter->read(ls); |
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422 | Node target = nodeInverter->read(ls); |
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423 | Edge edge = graph.addEdge(source, target); |
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424 | edgeInverter->read(ls, edge); |
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425 | for (int i = 1; i < (int)index.size(); ++i) { |
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426 | index[i]->read(ls, edge); |
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427 | } |
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428 | } |
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429 | return line; |
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430 | } |
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431 | |
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432 | std::string readNodes(int& line_num, |
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433 | auto_ptr<InverterBase<Node> >& nodeInverter) { |
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434 | std::string line; |
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435 | while (line = readNotEmptyLine(is, line_num), line[0] != '@') { |
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436 | std::istringstream ls(line); |
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437 | std::string name; |
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438 | ls >> name; |
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439 | typename NodeReaders::iterator it = node_readers.find(name); |
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440 | if (it != node_readers.end()) { |
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441 | *(it -> second) = nodeInverter->read(ls); |
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442 | } |
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443 | } |
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444 | return line; |
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445 | } |
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446 | |
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447 | std::string readEdges(int& line_num, |
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448 | auto_ptr<InverterBase<Edge> >& edgeInverter) { |
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449 | std::string line; |
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450 | while (line = readNotEmptyLine(is, line_num), line[0] != '@') { |
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451 | std::istringstream ls(line); |
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452 | std::string name; |
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453 | ls >> name; |
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454 | typename EdgeReaders::iterator it = edge_readers.find(name); |
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455 | if (it != edge_readers.end()) { |
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456 | *(it -> second) = edgeInverter->read(ls); |
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457 | } |
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458 | } |
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459 | return line; |
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460 | } |
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461 | |
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462 | std::string readNotEmptyLine(std::istream& is, int& line_num) { |
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463 | std::string line; |
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464 | while (++line_num, getline(is, line)) { |
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465 | int vi = line.find_first_not_of(" \t"); |
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466 | if (vi != (int)string::npos && line[vi] != '#') { |
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467 | return line.substr(vi); |
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468 | } |
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469 | } |
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470 | throw DataFormatError("End of stream error"); |
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471 | } |
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472 | |
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473 | // Inverters store and give back the Item from the id, |
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474 | // and may put the ids into a map. |
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475 | |
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476 | template <typename _Item> |
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477 | class InverterBase { |
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478 | public: |
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479 | typedef _Item Item; |
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480 | virtual void read(std::istream&, const Item&) = 0; |
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481 | virtual Item read(std::istream&) = 0; |
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482 | }; |
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483 | |
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484 | template <typename _Item, typename _Map, typename _Reader> |
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485 | class MapReaderInverter : public InverterBase<_Item> { |
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486 | public: |
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487 | typedef _Item Item; |
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488 | typedef _Reader Reader; |
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489 | typedef typename Reader::Value Value; |
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490 | typedef _Map Map; |
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491 | typedef std::map<Value, Item> Inverse; |
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492 | |
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493 | Map& map; |
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494 | Reader reader; |
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495 | Inverse inverse; |
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496 | |
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497 | MapReaderInverter(Map& _map, const Reader& _reader) |
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498 | : map(_map), reader(_reader) {} |
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499 | |
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500 | virtual ~MapReaderInverter() {} |
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501 | |
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502 | virtual void read(std::istream& is, const Item& item) { |
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503 | Value value; |
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504 | reader.read(is, value); |
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505 | map.set(item, value); |
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506 | typename Inverse::iterator it = inverse.find(value); |
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507 | if (it == inverse.end()) { |
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508 | inverse.insert(make_pair(value, item)); |
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509 | } else { |
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510 | throw DataFormatError("Multiple ID occurence"); |
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511 | } |
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512 | } |
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513 | |
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514 | virtual Item read(std::istream& is) { |
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515 | Value value; |
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516 | reader.read(is, value); |
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517 | typename Inverse::const_iterator it = inverse.find(value); |
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518 | if (it != inverse.end()) { |
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519 | return it->second; |
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520 | } else { |
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521 | throw DataFormatError("Invalid ID error"); |
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522 | } |
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523 | } |
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524 | }; |
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525 | |
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526 | template <typename _Item, typename _Reader> |
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527 | class SkipReaderInverter : public InverterBase<_Item> { |
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528 | public: |
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529 | typedef _Item Item; |
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530 | typedef _Reader Reader; |
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531 | typedef typename Reader::Value Value; |
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532 | typedef std::map<Value, Item> Inverse; |
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533 | |
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534 | Reader reader; |
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535 | |
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536 | SkipReaderInverter(const Reader& _reader) |
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537 | : reader(_reader) {} |
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538 | |
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539 | virtual ~SkipReaderInverter() {} |
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540 | |
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541 | virtual void read(std::istream& is, const Item& item) { |
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542 | Value value; |
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543 | reader.read(is, value); |
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544 | typename Inverse::iterator it = inverse.find(value); |
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545 | if (it == inverse.end()) { |
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546 | inverse.insert(make_pair(value, item)); |
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547 | } else { |
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548 | throw DataFormatError("Multiple ID occurence error"); |
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549 | } |
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550 | } |
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551 | |
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552 | virtual Item read(std::istream& is) { |
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553 | Value value; |
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554 | reader.read(is, value); |
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555 | typename Inverse::const_iterator it = inverse.find(value); |
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556 | if (it != inverse.end()) { |
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557 | return it->second; |
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558 | } else { |
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559 | throw DataFormatError("Invalid ID error"); |
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560 | } |
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561 | } |
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562 | private: |
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563 | Inverse inverse; |
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564 | }; |
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565 | |
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566 | // Readers |
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567 | |
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568 | template <typename _Item> |
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569 | class ReaderBase { |
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570 | public: |
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571 | typedef _Item Item; |
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572 | |
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573 | // virtual ~ReaderBase() {} |
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574 | |
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575 | virtual void read(std::istream& is, const Item& item) = 0; |
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576 | virtual InverterBase<_Item>* getInverter() = 0; |
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577 | }; |
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578 | |
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579 | template <typename _Item, typename _Map, typename _Reader> |
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580 | class MapReader : public ReaderBase<_Item> { |
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581 | public: |
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582 | typedef _Map Map; |
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583 | typedef _Reader Reader; |
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584 | typedef typename Reader::Value Value; |
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585 | typedef _Item Item; |
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586 | |
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587 | Map& map; |
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588 | Reader reader; |
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589 | |
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590 | MapReader(Map& _map, const Reader& _reader) |
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591 | : map(_map), reader(_reader) {} |
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592 | |
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593 | virtual ~MapReader() {} |
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594 | |
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595 | virtual void read(std::istream& is, const Item& item) { |
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596 | Value value; |
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597 | reader.read(is, value); |
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598 | map.set(item, value); |
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599 | } |
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600 | |
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601 | virtual InverterBase<_Item>* getInverter() { |
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602 | return new MapReaderInverter<Item, Map, Reader>(map, reader); |
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603 | } |
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604 | }; |
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605 | |
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606 | |
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607 | template <typename _Item, typename _Reader> |
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608 | class SkipReader : public ReaderBase<_Item> { |
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609 | public: |
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610 | typedef _Reader Reader; |
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611 | typedef typename Reader::Value Value; |
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612 | typedef _Item Item; |
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613 | |
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614 | Reader reader; |
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615 | SkipReader(const Reader& _reader) : reader(_reader) {} |
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616 | |
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617 | virtual ~SkipReader() {} |
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618 | |
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619 | virtual void read(std::istream& is, const Item& item) { |
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620 | Value value; |
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621 | reader.read(is, value); |
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622 | } |
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623 | |
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624 | virtual InverterBase<Item>* getInverter() { |
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625 | return new SkipReaderInverter<Item, Reader>(reader); |
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626 | } |
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627 | }; |
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628 | |
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629 | |
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630 | typedef std::map<std::string, ReaderBase<Node>*> NodeMapReaders; |
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631 | NodeMapReaders node_map_readers; |
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632 | |
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633 | typedef std::map<std::string, ReaderBase<Edge>*> EdgeMapReaders; |
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634 | EdgeMapReaders edge_map_readers; |
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635 | |
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636 | typedef std::map<std::string, Node*> NodeReaders; |
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637 | NodeReaders node_readers; |
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638 | |
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639 | typedef std::map<std::string, Edge*> EdgeReaders; |
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640 | EdgeReaders edge_readers; |
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641 | |
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642 | std::istream& is; |
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643 | Graph& graph; |
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644 | |
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645 | SkipReader<Node, DefaultReader> nodeSkipper; |
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646 | SkipReader<Edge, DefaultReader> edgeSkipper; |
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647 | |
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648 | }; |
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649 | |
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650 | /// Ready to use reader function. |
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651 | template<typename Graph, typename CapacityMap, typename CostMap> |
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652 | void readGraph(std::istream& is, Graph &g, CapacityMap& capacity, |
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653 | typename Graph::Node &s, typename Graph::Node &t, |
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654 | CostMap& cost) { |
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655 | GraphReader<Graph> reader(is, g); |
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656 | reader.addEdgeMap("capacity", capacity); |
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657 | reader.addEdgeMap("cost", cost); |
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658 | reader.addNode("source", s); |
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659 | reader.addNode("target", t); |
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660 | reader.run(); |
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661 | } |
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662 | |
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663 | template<typename Graph, typename CapacityMap> |
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664 | void readGraph(std::istream& is, Graph &g, CapacityMap& capacity, |
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665 | typename Graph::Node &s, typename Graph::Node &t) { |
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666 | GraphReader<Graph> reader(is, g); |
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667 | reader.addEdgeMap("capacity", capacity); |
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668 | reader.addNode("source", s); |
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669 | reader.addNode("target", t); |
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670 | reader.run(); |
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671 | } |
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672 | |
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673 | template<typename Graph, typename CapacityMap> |
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674 | void readGraph(std::istream& is, Graph &g, CapacityMap& capacity, |
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675 | typename Graph::Node &s) { |
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676 | GraphReader<Graph> reader(is, g); |
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677 | reader.addEdgeMap("capacity", capacity); |
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678 | reader.addNode("source", s); |
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679 | reader.run(); |
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680 | } |
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681 | |
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682 | template<typename Graph, typename CapacityMap> |
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683 | void readGraph(std::istream& is, Graph &g, CapacityMap& capacity) { |
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684 | GraphReader<Graph> reader(is, g); |
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685 | reader.addEdgeMap("capacity", capacity); |
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686 | reader.run(); |
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687 | } |
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688 | |
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689 | template<typename Graph> |
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690 | void readGraph(std::istream& is, Graph &g) { |
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691 | GraphReader<Graph> reader(is, g); |
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692 | reader.run(); |
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693 | } |
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694 | |
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695 | } |
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