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) 2003-2007 |
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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 | #ifndef LEMON_ARG_PARSER |
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20 | #define LEMON_ARG_PARSER |
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21 | |
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22 | #include <vector> |
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23 | #include <map> |
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24 | #include <list> |
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25 | #include <string> |
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26 | #include <iostream> |
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27 | #include <sstream> |
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28 | #include <algorithm> |
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29 | |
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30 | ///\ingroup misc |
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31 | ///\file |
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32 | ///\brief A tools to parse command line arguments. |
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33 | /// |
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34 | ///\author Alpar Juttner |
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35 | |
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36 | namespace lemon { |
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37 | |
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38 | ///Command line arguments parser |
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39 | |
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40 | ///\ingroup misc |
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41 | ///Command line arguments parser |
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42 | /// |
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43 | class ArgParser { |
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44 | |
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45 | static void _showHelp(void *p); |
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46 | protected: |
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47 | |
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48 | int _argc; |
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49 | char **_argv; |
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50 | |
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51 | enum OptType { UNKNOWN=0, BOOL=1, STRING=2, DOUBLE=3, INTEGER=4, FUNC=5 }; |
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52 | |
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53 | class ParData { |
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54 | public: |
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55 | union { |
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56 | bool *bool_p; |
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57 | int *int_p; |
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58 | double *double_p; |
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59 | std::string *string_p; |
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60 | struct { |
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61 | void (*p)(void *); |
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62 | void *data; |
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63 | } func_p; |
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64 | |
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65 | }; |
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66 | std::string help; |
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67 | bool mandatory; |
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68 | OptType type; |
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69 | bool set; |
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70 | bool ingroup; |
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71 | bool has_syn; |
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72 | bool syn; |
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73 | bool self_delete; |
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74 | ParData() : mandatory(false), type(UNKNOWN), set(false), ingroup(false), |
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75 | has_syn(false), syn(false), self_delete(false) {} |
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76 | }; |
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77 | |
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78 | typedef std::map<std::string,ParData> Opts; |
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79 | Opts _opts; |
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80 | |
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81 | class GroupData |
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82 | { |
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83 | public: |
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84 | typedef std::list<std::string> Opts; |
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85 | Opts opts; |
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86 | bool only_one; |
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87 | bool mandatory; |
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88 | GroupData() :only_one(false), mandatory(false) {} |
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89 | }; |
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90 | |
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91 | typedef std::map<std::string,GroupData> Groups; |
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92 | Groups _groups; |
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93 | |
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94 | struct OtherArg |
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95 | { |
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96 | std::string name; |
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97 | std::string help; |
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98 | OtherArg(std::string n, std::string h) :name(n), help(h) {} |
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99 | |
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100 | }; |
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101 | |
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102 | std::vector<OtherArg> _others_help; |
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103 | std::vector<std::string> _file_args; |
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104 | std::string _command_name; |
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105 | |
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106 | public: |
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107 | |
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108 | ///\e |
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109 | ArgParser(int argc, char **argv); |
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110 | |
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111 | ~ArgParser(); |
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112 | |
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113 | ///Add a new integer type option |
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114 | |
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115 | ///\param name The name of the option. The leading '-' must be omitted. |
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116 | ///\param help A help string. |
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117 | ///\retval value The value of the argument will be written to this variable. |
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118 | ///\param obl Indicate if the option is mandatory. |
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119 | ArgParser &intOption(const std::string &name, |
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120 | const std::string &help, |
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121 | int value=0, bool obl=false); |
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122 | |
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123 | ///Add a new floating type option |
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124 | |
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125 | ///\param name The name of the option. The leading '-' must be omitted. |
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126 | ///\param help A help string. |
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127 | ///\retval value The value of the argument will be written to this variable. |
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128 | ///\param obl Indicate if the option is mandatory. |
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129 | ArgParser &doubleOption(const std::string &name, |
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130 | const std::string &help, |
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131 | double value=0, bool obl=false); |
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132 | |
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133 | ///Add a new bool type option |
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134 | |
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135 | ///\param name The name of the option. The leading '-' must be omitted. |
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136 | ///\param help A help string. |
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137 | ///\retval value The value of the argument will be written to this variable. |
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138 | ///\param obl Indicate if the option is mandatory. |
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139 | ////\note A mandatory bool obtion is of very little use.) |
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140 | ArgParser &boolOption(const std::string &name, |
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141 | const std::string &help, |
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142 | bool value=false, bool obl=false); |
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143 | |
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144 | ///Add a new string type option |
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145 | |
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146 | ///\param name The name of the option. The leading '-' must be omitted. |
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147 | ///\param help A help string. |
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148 | ///\retval value The value of the argument will be written to this variable. |
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149 | ///\param obl Indicate if the option is mandatory. |
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150 | ArgParser &stringOption(const std::string &name, |
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151 | const std::string &help, |
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152 | std::string value="", bool obl=false); |
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153 | |
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154 | |
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155 | |
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156 | |
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157 | ///Add a new integer type option |
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158 | |
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159 | ///\param name The name of the option. The leading '-' must be omitted. |
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160 | ///\param help A help string. |
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161 | ///\retval value The value of the argument will be written to this variable. |
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162 | ///\param obl Indicate if the option is mandatory. |
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163 | ArgParser &refOption(const std::string &name, |
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164 | const std::string &help, |
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165 | int &value, bool obl=false); |
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166 | |
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167 | ///Add a new floating type option |
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168 | |
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169 | ///\param name The name of the option. The leading '-' must be omitted. |
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170 | ///\param help A help string. |
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171 | ///\retval value The value of the argument will be written to this variable. |
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172 | ///\param obl Indicate if the option is mandatory. |
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173 | ArgParser &refOption(const std::string &name, |
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174 | const std::string &help, |
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175 | double &value, bool obl=false); |
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176 | |
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177 | ///Add a new bool type option |
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178 | |
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179 | ///\param name The name of the option. The leading '-' must be omitted. |
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180 | ///\param help A help string. |
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181 | ///\retval value The value of the argument will be written to this variable. |
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182 | ///\param obl Indicate if the option is mandatory. |
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183 | ////\note A mandatory bool obtion is of very little use.) |
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184 | ArgParser &refOption(const std::string &name, |
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185 | const std::string &help, |
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186 | bool &value, bool obl=false); |
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187 | |
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188 | ///Add a new string type option |
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189 | |
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190 | ///\param name The name of the option. The leading '-' must be omitted. |
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191 | ///\param help A help string. |
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192 | ///\retval value The value of the argument will be written to this variable. |
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193 | ///\param obl Indicate if the option is mandatory. |
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194 | ArgParser &refOption(const std::string &name, |
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195 | const std::string &help, |
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196 | std::string &value, bool obl=false); |
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197 | |
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198 | ///Bind a function to an option. |
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199 | |
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200 | ///\param name The name of the option. The leading '-' must be omitted. |
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201 | ///\param help A help string. |
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202 | ///\retval func The function to be called when the option is given. It |
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203 | /// must be of type "void f(void *)" |
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204 | ///\param data Data to be passed to \c func |
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205 | ArgParser &refOption(const std::string &name, |
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206 | const std::string &help, |
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207 | void (*func)(void *),void *data); |
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208 | |
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209 | ///Boundle some options into a group |
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210 | |
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211 | /// You can group some option by calling this function repeatedly for each |
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212 | /// option to be grupped with the same groupname. |
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213 | ///\param group The group name |
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214 | ///\param opt The option name |
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215 | ArgParser &optionGroup(const std::string &group, |
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216 | const std::string &opt); |
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217 | |
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218 | ///Make the members of a group exclusive |
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219 | |
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220 | ///If you call this function for a group, than at most one of them can be |
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221 | ///given at the same time |
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222 | ArgParser &onlyOneGroup(const std::string &group); |
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223 | |
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224 | ///Create synonym to an option |
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225 | |
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226 | ///With this function you can create a sysnonym called \c sys of the |
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227 | ///option \c opt. |
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228 | ArgParser &synonym(const std::string &syn, |
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229 | const std::string &opt); |
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230 | |
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231 | ///Make a group mandatory |
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232 | |
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233 | ///Using this function, at least one of the members of \c group |
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234 | ///must be given. |
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235 | ArgParser &mandatoryGroup(const std::string &group); |
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236 | |
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237 | ///Give help string for non-parsed arguments. |
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238 | |
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239 | ///With this function you can give help string for non-parsed arguments. |
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240 | ///the parameter \c name will be printed in the short usage line, while |
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241 | ///\c help gives a more detailed description. |
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242 | ArgParser &other(const std::string &name, |
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243 | const std::string &help=""); |
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244 | |
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245 | ///Non option type arguments. |
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246 | |
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247 | ///Gives back a reference to a vector consisting of the program arguments |
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248 | ///not starting with a '-' character. |
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249 | std::vector<std::string> &files() { return _file_args; } |
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250 | |
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251 | ///Give back the command name (the 0th argument) |
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252 | const std::string &commandName() { return _command_name; } |
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253 | |
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254 | void show(std::ostream &os,Opts::iterator i); |
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255 | void show(std::ostream &os,Groups::iterator i); |
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256 | void showHelp(Opts::iterator i); |
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257 | void showHelp(std::vector<OtherArg>::iterator i); |
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258 | void shortHelp(); |
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259 | void showHelp(); |
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260 | |
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261 | void unknownOpt(std::string arg); |
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262 | |
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263 | void requiresValue(std::string arg, OptType t); |
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264 | void checkMandatories(); |
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265 | |
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266 | ///\e |
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267 | ArgParser &parse(); |
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268 | |
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269 | /// Synonym for parse() |
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270 | ArgParser &run() |
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271 | { |
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272 | return parse(); |
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273 | } |
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274 | |
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275 | ///Check if an opion has been given to the command. |
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276 | bool given(std::string op) |
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277 | { |
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278 | Opts::iterator i = _opts.find(op); |
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279 | return i!=_opts.end()?i->second.set:false; |
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280 | } |
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281 | |
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282 | |
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283 | class RefType |
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284 | { |
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285 | ArgParser &_parser; |
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286 | std::string _name; |
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287 | public: |
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288 | RefType(ArgParser &p,const std::string &n) :_parser(p),_name(n) {} |
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289 | operator bool() |
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290 | { |
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291 | Opts::iterator i = _parser._opts.find(_name); |
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292 | if(i==_parser._opts.end()) exit(3); ///\todo throw exception instead |
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293 | else if(i->second.type!=ArgParser::BOOL) exit(3); |
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294 | else return *(i->second.bool_p); |
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295 | } |
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296 | operator std::string() |
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297 | { |
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298 | Opts::iterator i = _parser._opts.find(_name); |
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299 | if(i==_parser._opts.end()) exit(3); ///\todo throw exception instead |
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300 | else if(i->second.type!=ArgParser::STRING) exit(3); |
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301 | else return *(i->second.string_p); |
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302 | } |
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303 | operator double() |
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304 | { |
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305 | Opts::iterator i = _parser._opts.find(_name); |
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306 | if(i==_parser._opts.end()) exit(3); ///\todo throw exception instead |
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307 | else if(i->second.type!=ArgParser::DOUBLE) exit(3); |
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308 | else return *(i->second.double_p); |
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309 | } |
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310 | operator int() |
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311 | { |
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312 | Opts::iterator i = _parser._opts.find(_name); |
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313 | if(i==_parser._opts.end()) exit(3); ///\todo throw exception instead |
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314 | else if(i->second.type!=ArgParser::INTEGER) exit(3); |
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315 | else return *(i->second.int_p); |
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316 | } |
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317 | |
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318 | }; |
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319 | |
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320 | RefType operator[](const std::string &n) |
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321 | { |
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322 | return RefType(*this, n); |
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323 | } |
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324 | |
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325 | |
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326 | }; |
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327 | } |
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328 | |
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329 | |
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330 | |
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331 | #endif // LEMON_MAIN_PARAMS |
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