1 | /* -*- C++ -*- |
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2 | * |
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3 | * This file is a part of LEMON, a generic C++ optimization library |
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4 | * |
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5 | * Copyright (C) 2003-2008 |
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6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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8 | * |
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9 | * Permission to use, modify and distribute this software is granted |
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10 | * provided that this copyright notice appears in all copies. For |
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11 | * precise terms see the accompanying LICENSE file. |
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12 | * |
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13 | * This software is provided "AS IS" with no warranty of any kind, |
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14 | * express or implied, and with no claim as to its suitability for any |
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15 | * purpose. |
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16 | * |
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17 | */ |
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18 | |
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19 | ///\ingroup demos |
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20 | ///\file |
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21 | ///\brief Argument parser demo |
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22 | /// |
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23 | /// This example shows how the argument parser can be used. |
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24 | /// |
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25 | /// \include arg_parser_demo.cc |
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26 | |
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27 | #include <lemon/arg_parser.h> |
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28 | |
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29 | using namespace lemon; |
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30 | int main(int argc, const char **argv) |
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31 | { |
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32 | ArgParser ap(argc,argv); |
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33 | int i; |
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34 | std::string s; |
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35 | double d; |
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36 | bool b,sil; |
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37 | bool g1,g2,g3; |
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38 | ap.refOption("n", "An integer input.", i, true) |
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39 | .refOption("val", "A double input.", d) |
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40 | .doubleOption("val2", "A double input.", d) |
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41 | .synonym("vals","val") |
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42 | .refOption("name", "A string input.", s) |
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43 | .refOption("f", "A switch.", b) |
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44 | .refOption("nohelp", "", sil) |
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45 | .refOption("gra","Choice A",g1) |
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46 | .refOption("grb","Choice B",g2) |
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47 | .refOption("grc","Choice C",g3) |
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48 | .optionGroup("gr","gra") |
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49 | .optionGroup("gr","grb") |
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50 | .optionGroup("gr","grc") |
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51 | .mandatoryGroup("gr") |
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52 | .onlyOneGroup("gr") |
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53 | .other("infile","The input file.") |
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54 | .other("..."); |
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55 | |
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56 | ap.parse(); |
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57 | |
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58 | std::cout << "Parameters of '" << ap.commandName() << "':\n"; |
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59 | |
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60 | if(ap.given("n")) std::cout << " Value of -n: " << i << std::endl; |
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61 | if(ap.given("val")) std::cout << " Value of -val: " << d << std::endl; |
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62 | if(ap.given("name")) std::cout << " Value of -name: " << s << std::endl; |
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63 | if(ap.given("f")) std::cout << " -f is given\n"; |
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64 | if(ap.given("nohelp")) std::cout << " Value of -nohelp: " << sil << std::endl; |
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65 | if(ap.given("gra")) std::cout << " -gra is given\n"; |
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66 | if(ap.given("grb")) std::cout << " -grb is given\n"; |
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67 | if(ap.given("grc")) std::cout << " -grc is given\n"; |
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68 | |
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69 | switch(ap.files().size()) { |
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70 | case 0: |
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71 | std::cout << " No file argument was given.\n"; |
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72 | break; |
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73 | case 1: |
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74 | std::cout << " 1 file argument was given. It is:\n"; |
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75 | break; |
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76 | default: |
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77 | std::cout << " " |
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78 | << ap.files().size() << " file arguments were given. They are:\n"; |
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79 | } |
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80 | for(unsigned int i=0;i<ap.files().size();++i) |
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81 | std::cout << " '" << ap.files()[i] << "'\n"; |
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82 | |
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83 | } |
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