1 | /* -*- C++ -*- |
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2 | * demo/dim_to_lgf.cc - Part of LEMON, a generic C++ optimization library |
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3 | * |
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4 | * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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5 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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6 | * |
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7 | * Permission to use, modify and distribute this software is granted |
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8 | * provided that this copyright notice appears in all copies. For |
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9 | * precise terms see the accompanying LICENSE file. |
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10 | * |
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11 | * This software is provided "AS IS" with no warranty of any kind, |
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12 | * express or implied, and with no claim as to its suitability for any |
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13 | * purpose. |
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14 | * |
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15 | */ |
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16 | |
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17 | ///\ingroup demos |
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18 | ///\file |
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19 | ///\brief DIMACS to LGF converter (demo). |
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20 | /// |
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21 | /// This program converts various DIMACS formats to the LEMON Graph Format |
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22 | /// (LGF). |
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23 | /// |
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24 | /// \include dim_to_lgf.cc |
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25 | |
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26 | #include <iostream> |
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27 | #include <fstream> |
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28 | #include <cstring> |
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29 | |
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30 | #include <lemon/smart_graph.h> |
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31 | #include <lemon/dimacs.h> |
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32 | #include <lemon/graph_writer.h> |
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33 | |
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34 | using namespace std; |
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35 | using namespace lemon; |
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36 | |
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37 | const char* versionString = |
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38 | "dim_to_lgf - part of lemon library\n"; |
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39 | |
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40 | const char* helpString = |
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41 | "DIMACS to LGF converter\n" |
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42 | "Usage: dim_to_lgf [OPTIONS]\n" |
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43 | "\n" |
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44 | "Examples:\n" |
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45 | " dim_to_lgf --type shortestpath --input graph.dim --output graph.lgf\n" |
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46 | "\n" |
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47 | "Options:\n" |
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48 | " -i FILE, --input FILE use FILE as input instead of standard input\n" |
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49 | " -o FILE, --output FILE use FILE as output instead of standard output\n" |
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50 | " -t TYPE, --type TYPE set up the type of the graph\n" |
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51 | " Possible types:\n" |
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52 | " mincostflow\n" |
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53 | " maxflow (default)\n" |
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54 | " shortestpath\n" |
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55 | " capacitated\n" |
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56 | " plain\n" |
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57 | " -v, --version shows the version of the converter\n" |
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58 | " -h, --help shows the help of the converter\n"; |
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59 | |
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60 | |
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61 | int main(int argc, const char *argv[]) { |
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62 | typedef SmartGraph Graph; |
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63 | |
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64 | typedef Graph::Edge Edge; |
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65 | typedef Graph::Node Node; |
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66 | typedef Graph::EdgeIt EdgeIt; |
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67 | typedef Graph::NodeIt NodeIt; |
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68 | typedef Graph::EdgeMap<string> StringMap; |
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69 | |
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70 | std::string inputName; |
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71 | std::string outputName; |
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72 | std::string typeName; |
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73 | |
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74 | bool help = false; |
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75 | bool version = false; |
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76 | |
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77 | for (int arg = 1; arg < argc; ++arg) { |
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78 | if (strcmp(argv[arg], "--type") == 0 || |
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79 | strcmp(argv[arg], "-t") == 0) { |
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80 | if (!typeName.empty()) { |
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81 | cerr << "Multiple type description" << endl; |
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82 | return -1; |
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83 | } |
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84 | if (arg + 1 == argc) { |
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85 | cerr << "Parameter without value" << endl; |
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86 | return -1; |
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87 | } |
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88 | typeName = argv[++arg]; |
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89 | } |
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90 | else if (strcmp(argv[arg], "--input") == 0 || |
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91 | strcmp(argv[arg], "-i") == 0) { |
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92 | if (!inputName.empty()) { |
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93 | cerr << "Multiple input description" << endl; |
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94 | return -1; |
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95 | } |
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96 | if (arg + 1 == argc) { |
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97 | cerr << "Parameter without value" << endl; |
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98 | return -1; |
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99 | } |
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100 | inputName = argv[++arg]; |
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101 | } |
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102 | else if (strcmp(argv[arg], "--output") == 0 || |
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103 | strcmp(argv[arg], "-o") == 0) { |
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104 | if (!outputName.empty()) { |
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105 | cerr << "Multiple input description" << endl; |
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106 | return -1; |
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107 | } |
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108 | if (arg + 1 == argc) { |
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109 | cerr << "Parameter without value" << endl; |
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110 | return -1; |
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111 | } |
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112 | outputName = argv[++arg]; |
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113 | } else if (strcmp(argv[arg], "--help") == 0 || |
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114 | strcmp(argv[arg], "-h") == 0) { |
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115 | help = true; |
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116 | } else if (strcmp(argv[arg], "--version") == 0 || |
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117 | strcmp(argv[arg], "-v") == 0) { |
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118 | version = true; |
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119 | } else { |
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120 | cerr << "Invalid option: " << argv[arg] << endl; |
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121 | return -1; |
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122 | } |
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123 | } |
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124 | |
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125 | if (version) { |
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126 | cout << versionString; |
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127 | } |
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128 | if (help) { |
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129 | cout << helpString; |
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130 | } |
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131 | if (help || version) { |
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132 | return 0; |
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133 | } |
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134 | |
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135 | ifstream input; |
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136 | if (!inputName.empty()) { |
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137 | input.open(inputName.c_str()); |
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138 | if (!input) { |
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139 | cerr << "File open error" << endl; |
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140 | return -1; |
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141 | } |
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142 | } |
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143 | istream& is = (inputName.empty() ? cin : input); |
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144 | |
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145 | ofstream output; |
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146 | if (!outputName.empty()) { |
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147 | output.open(outputName.c_str()); |
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148 | if (!output) { |
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149 | cerr << "File open error" << endl; |
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150 | return -1; |
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151 | } |
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152 | } |
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153 | ostream& os = (outputName.empty() ? cout : output); |
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154 | |
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155 | if (typeName.empty()) { |
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156 | typeName = "maxflow"; |
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157 | } |
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158 | |
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159 | if (typeName == "mincostflow") { |
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160 | Graph graph; |
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161 | Node s, t; |
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162 | StringMap cost(graph), capacity(graph); |
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163 | readDimacs(is, graph, capacity, s, t, cost); |
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164 | GraphWriter<Graph>(os, graph). |
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165 | writeEdgeMap("capacity", capacity). |
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166 | writeNode("source", s). |
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167 | writeNode("target", t). |
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168 | writeEdgeMap("cost", cost). |
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169 | run(); |
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170 | } else if (typeName == "maxflow") { |
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171 | Graph graph; |
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172 | Node s, t; |
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173 | StringMap capacity(graph); |
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174 | readDimacs(is, graph, capacity, s, t); |
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175 | GraphWriter<Graph>(os, graph). |
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176 | writeEdgeMap("capacity", capacity). |
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177 | writeNode("source", s). |
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178 | writeNode("target", t). |
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179 | run(); |
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180 | } else if (typeName == "shortestpath") { |
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181 | Graph graph; |
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182 | Node s; |
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183 | StringMap capacity(graph); |
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184 | readDimacs(is, graph, capacity, s); |
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185 | GraphWriter<Graph>(os, graph). |
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186 | writeEdgeMap("capacity", capacity). |
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187 | writeNode("source", s). |
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188 | run(); |
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189 | } else if (typeName == "capacitated") { |
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190 | Graph graph; |
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191 | StringMap capacity(graph); |
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192 | readDimacs(is, graph, capacity); |
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193 | GraphWriter<Graph>(os, graph). |
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194 | writeEdgeMap("capacity", capacity). |
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195 | run(); |
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196 | } else if (typeName == "plain") { |
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197 | Graph graph; |
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198 | readDimacs(is, graph); |
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199 | GraphWriter<Graph>(os, graph).run(); |
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200 | } else { |
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201 | cerr << "Invalid type error" << endl; |
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202 | return -1; |
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203 | } |
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204 | return 0; |
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205 | } |
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