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 <iostream> |
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25 | #include <fstream> |
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26 | #include <cstring> |
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27 | |
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28 | #include <lemon/smart_graph.h> |
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29 | #include <lemon/dimacs.h> |
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30 | #include <lemon/graph_writer.h> |
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31 | |
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32 | using namespace std; |
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33 | using namespace lemon; |
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34 | |
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35 | const char* versionString = |
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36 | "dim_to_lgf - part of lemon library\n"; |
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37 | |
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38 | const char* helpString = |
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39 | "DIMACS to LGF converter\n" |
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40 | "Usage: dim_to_lgf [OPTIONS]\n" |
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41 | "\n" |
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42 | "Examples:\n" |
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43 | " dim_to_lgf --type shortestpath --input graph.dim --output graph.lgf\n" |
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44 | "\n" |
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45 | "Options:\n" |
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46 | " -i FILE, --input FILE use FILE as input instead of standard input\n" |
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47 | " -o FILE, --output FILE use FILE as output instead of standard output\n" |
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48 | " -t TYPE, --type TYPE set up the type of the graph\n" |
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49 | " Possible types:\n" |
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50 | " mincostflow\n" |
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51 | " maxflow (default)\n" |
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52 | " shortestpath\n" |
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53 | " capacitated\n" |
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54 | " plain\n" |
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55 | " -v, --version shows the version of the converter\n" |
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56 | " -h, --help shows the help of the converter\n"; |
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57 | |
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58 | |
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59 | int main(int argc, const char *argv[]) { |
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60 | typedef SmartGraph Graph; |
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61 | |
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62 | typedef Graph::Edge Edge; |
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63 | typedef Graph::Node Node; |
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64 | typedef Graph::EdgeIt EdgeIt; |
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65 | typedef Graph::NodeIt NodeIt; |
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66 | typedef Graph::EdgeMap<string> StringMap; |
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67 | |
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68 | std::string inputName; |
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69 | std::string outputName; |
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70 | std::string typeName; |
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71 | |
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72 | bool help = false; |
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73 | bool version = false; |
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74 | |
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75 | for (int arg = 1; arg < argc; ++arg) { |
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76 | if (strcmp(argv[arg], "--type") == 0 || |
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77 | strcmp(argv[arg], "-t") == 0) { |
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78 | if (!typeName.empty()) { |
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79 | cerr << "Multiple type description" << endl; |
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80 | return -1; |
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81 | } |
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82 | if (arg + 1 == argc) { |
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83 | cerr << "Parameter without value" << endl; |
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84 | return -1; |
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85 | } |
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86 | typeName = argv[++arg]; |
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87 | } |
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88 | else if (strcmp(argv[arg], "--input") == 0 || |
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89 | strcmp(argv[arg], "-i") == 0) { |
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90 | if (!inputName.empty()) { |
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91 | cerr << "Multiple input description" << endl; |
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92 | return -1; |
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93 | } |
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94 | if (arg + 1 == argc) { |
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95 | cerr << "Parameter without value" << endl; |
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96 | return -1; |
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97 | } |
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98 | inputName = argv[++arg]; |
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99 | } |
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100 | else if (strcmp(argv[arg], "--output") == 0 || |
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101 | strcmp(argv[arg], "-o") == 0) { |
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102 | if (!outputName.empty()) { |
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103 | cerr << "Multiple input description" << endl; |
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104 | return -1; |
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105 | } |
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106 | if (arg + 1 == argc) { |
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107 | cerr << "Parameter without value" << endl; |
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108 | return -1; |
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109 | } |
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110 | outputName = argv[++arg]; |
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111 | } else if (strcmp(argv[arg], "--help") == 0 || |
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112 | strcmp(argv[arg], "-h") == 0) { |
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113 | help = true; |
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114 | } else if (strcmp(argv[arg], "--version") == 0 || |
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115 | strcmp(argv[arg], "-v") == 0) { |
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116 | version = true; |
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117 | } else { |
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118 | cerr << "Invalid option: " << argv[arg] << endl; |
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119 | return -1; |
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120 | } |
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121 | } |
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122 | |
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123 | if (version) { |
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124 | cout << versionString; |
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125 | } |
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126 | if (help) { |
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127 | cout << helpString; |
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128 | } |
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129 | if (help || version) { |
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130 | return 0; |
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131 | } |
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132 | |
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133 | ifstream input; |
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134 | if (!inputName.empty()) { |
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135 | input.open(inputName.c_str()); |
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136 | if (!input) { |
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137 | cerr << "File open error" << endl; |
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138 | return -1; |
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139 | } |
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140 | } |
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141 | istream& is = (inputName.empty() ? cin : input); |
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142 | |
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143 | ofstream output; |
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144 | if (!outputName.empty()) { |
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145 | output.open(outputName.c_str()); |
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146 | if (!output) { |
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147 | cerr << "File open error" << endl; |
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148 | return -1; |
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149 | } |
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150 | } |
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151 | ostream& os = (outputName.empty() ? cout : output); |
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152 | |
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153 | if (typeName.empty()) { |
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154 | typeName = "maxflow"; |
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155 | } |
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156 | |
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157 | if (typeName == "mincostflow") { |
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158 | Graph graph; |
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159 | Node s, t; |
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160 | StringMap cost(graph), capacity(graph); |
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161 | readDimacs(is, graph, capacity, s, t, cost); |
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162 | writeGraph(os, graph, capacity, s, t, cost); |
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163 | } else if (typeName == "maxflow") { |
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164 | Graph graph; |
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165 | Node s, t; |
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166 | StringMap capacity(graph); |
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167 | readDimacs(is, graph, capacity, s, t); |
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168 | writeGraph(os, graph, capacity, s, t); |
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169 | } else if (typeName == "shortestpath") { |
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170 | Graph graph; |
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171 | Node s; |
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172 | StringMap capacity(graph); |
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173 | readDimacs(is, graph, capacity, s); |
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174 | writeGraph(os, graph, capacity, s); |
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175 | } else if (typeName == "capacitated") { |
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176 | Graph graph; |
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177 | StringMap capacity(graph); |
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178 | readDimacs(is, graph, capacity); |
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179 | writeGraph(os, graph, capacity); |
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180 | } else if (typeName == "plain") { |
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181 | Graph graph; |
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182 | readDimacs(is, graph); |
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183 | writeGraph(os, graph); |
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184 | } else { |
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185 | cerr << "Invalid type error" << endl; |
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186 | return -1; |
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187 | } |
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188 | return 0; |
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189 | } |
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