[2389] | 1 | /* -*- C++ -*- |
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| 2 | * |
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[2391] | 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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[2389] | 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 | #include <lemon/arg_parser.h> |
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| 20 | |
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| 21 | namespace lemon { |
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| 22 | |
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| 23 | void ArgParser::_showHelp(void *p) |
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| 24 | { |
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[2390] | 25 | (static_cast<ArgParser*>(p))->showHelp(); |
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[2389] | 26 | exit(1); |
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| 27 | } |
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| 28 | |
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| 29 | ArgParser::ArgParser(int argc, char **argv) :_argc(argc), _argv(argv), |
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| 30 | _command_name(argv[0]) { |
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| 31 | option("-help","Print a short help message",_showHelp,this); |
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| 32 | synonym("help","-help"); |
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| 33 | synonym("h","-help"); |
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| 34 | |
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| 35 | } |
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| 36 | |
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| 37 | ArgParser &ArgParser::option(const std::string &name, |
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| 38 | const std::string &help, |
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| 39 | int &value, bool obl) |
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| 40 | { |
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| 41 | ParData p; |
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| 42 | p.int_p=&value; |
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| 43 | p.help=help; |
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| 44 | p.type=INTEGER; |
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| 45 | p.mandatory=obl; |
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| 46 | _opts[name]=p; |
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| 47 | return *this; |
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| 48 | } |
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| 49 | |
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| 50 | ArgParser &ArgParser::option(const std::string &name, |
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| 51 | const std::string &help, |
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| 52 | double &value, bool obl) |
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| 53 | { |
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| 54 | ParData p; |
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| 55 | p.double_p=&value; |
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| 56 | p.help=help; |
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| 57 | p.type=DOUBLE; |
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| 58 | p.mandatory=obl; |
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| 59 | _opts[name]=p; |
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| 60 | return *this; |
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| 61 | } |
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| 62 | |
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| 63 | ArgParser &ArgParser::option(const std::string &name, |
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| 64 | const std::string &help, |
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| 65 | bool &value, bool obl) |
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| 66 | { |
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| 67 | ParData p; |
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| 68 | p.bool_p=&value; |
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| 69 | p.help=help; |
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| 70 | p.type=BOOL; |
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| 71 | p.mandatory=obl; |
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| 72 | _opts[name]=p; |
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| 73 | |
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| 74 | value = false; |
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| 75 | |
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| 76 | return *this; |
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| 77 | } |
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| 78 | |
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| 79 | ArgParser &ArgParser::option(const std::string &name, |
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| 80 | const std::string &help, |
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| 81 | std::string &value, bool obl) |
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| 82 | { |
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| 83 | ParData p; |
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| 84 | p.string_p=&value; |
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| 85 | p.help=help; |
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| 86 | p.type=STRING; |
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| 87 | p.mandatory=obl; |
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| 88 | _opts[name]=p; |
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| 89 | return *this; |
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| 90 | } |
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| 91 | |
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| 92 | ArgParser &ArgParser::option(const std::string &name, |
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| 93 | const std::string &help, |
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| 94 | void (*func)(void *),void *data) |
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| 95 | { |
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| 96 | ParData p; |
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| 97 | p.func_p.p=func; |
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| 98 | p.func_p.data=data; |
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| 99 | p.help=help; |
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| 100 | p.type=FUNC; |
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| 101 | p.mandatory=false; |
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| 102 | _opts[name]=p; |
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| 103 | return *this; |
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| 104 | } |
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| 105 | ArgParser &ArgParser::optionGroup(const std::string &group, |
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| 106 | const std::string &opt) |
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| 107 | { |
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| 108 | Opts::iterator i = _opts.find(opt); |
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| 109 | if(i==_opts.end()) exit(3); ///\todo throw exception instead |
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| 110 | else if(i->second.ingroup) exit(3); ///\todo throw exception instead |
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| 111 | else { |
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| 112 | GroupData &g=_groups[group]; |
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| 113 | g.opts.push_back(opt); |
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| 114 | i->second.ingroup=true; |
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| 115 | } |
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| 116 | return *this; |
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| 117 | } |
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| 118 | |
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| 119 | ArgParser &ArgParser::onlyOneGroup(const std::string &group) |
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| 120 | { |
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| 121 | GroupData &g=_groups[group]; |
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| 122 | g.only_one=true; |
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| 123 | return *this; |
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| 124 | } |
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| 125 | |
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| 126 | ArgParser &ArgParser::synonym(const std::string &syn, |
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| 127 | const std::string &opt) |
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| 128 | { |
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| 129 | Opts::iterator o = _opts.find(opt); |
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| 130 | Opts::iterator s = _opts.find(syn); |
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| 131 | if(o==_opts.end()||s!=_opts.end()) |
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| 132 | exit(3); ///\todo throw exception instead |
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| 133 | else { |
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| 134 | ParData p; |
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| 135 | p.help=opt; |
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| 136 | p.mandatory=false; |
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| 137 | p.syn=true; |
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| 138 | _opts[syn]=p; |
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| 139 | o->second.has_syn=true; |
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| 140 | } |
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| 141 | return *this; |
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| 142 | } |
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| 143 | |
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| 144 | ArgParser &ArgParser::mandatoryGroup(const std::string &group) |
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| 145 | { |
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| 146 | GroupData &g=_groups[group]; |
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| 147 | g.mandatory=true; |
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| 148 | return *this; |
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| 149 | } |
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| 150 | |
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| 151 | ArgParser &ArgParser::other(const std::string &name, |
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| 152 | const std::string &help) |
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| 153 | { |
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| 154 | _others_help.push_back(OtherArg(name,help)); |
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| 155 | return *this; |
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| 156 | } |
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| 157 | |
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| 158 | void ArgParser::show(std::ostream &os,Opts::iterator i) |
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| 159 | { |
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| 160 | os << "-" << i->first; |
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| 161 | if(i->second.has_syn) |
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| 162 | for(Opts::iterator j=_opts.begin();j!=_opts.end();++j) |
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| 163 | if(j->second.syn&&j->second.help==i->first) |
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| 164 | os << "|-" << j->first; |
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| 165 | switch(i->second.type) { |
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| 166 | case STRING: |
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| 167 | os << " str"; |
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| 168 | break; |
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| 169 | case INTEGER: |
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| 170 | os << " int"; |
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| 171 | break; |
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| 172 | case DOUBLE: |
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| 173 | os << " num"; |
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| 174 | break; |
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| 175 | default: |
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| 176 | break; |
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| 177 | } |
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| 178 | } |
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| 179 | |
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| 180 | void ArgParser::show(std::ostream &os,Groups::iterator i) |
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| 181 | { |
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| 182 | GroupData::Opts::iterator o=i->second.opts.begin(); |
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| 183 | while(o!=i->second.opts.end()) { |
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| 184 | show(os,_opts.find(*o)); |
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| 185 | ++o; |
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| 186 | if(o!=i->second.opts.end()) os<<'|'; |
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| 187 | } |
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| 188 | } |
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| 189 | |
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| 190 | void ArgParser::showHelp(Opts::iterator i) |
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| 191 | { |
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| 192 | if(i->second.help.size()==0||i->second.syn) return; |
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| 193 | std::cerr << " "; |
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| 194 | show(std::cerr,i); |
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| 195 | std::cerr << std::endl; |
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| 196 | std::cerr << " " << i->second.help << std::endl; |
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| 197 | } |
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| 198 | void ArgParser::showHelp(std::vector<ArgParser::OtherArg>::iterator i) |
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| 199 | { |
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| 200 | if(i->help.size()==0) return; |
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| 201 | std::cerr << " " << i->name << std::endl |
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| 202 | << " " << i->help << std::endl; |
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| 203 | } |
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| 204 | |
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| 205 | void ArgParser::shortHelp() |
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| 206 | { |
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| 207 | const unsigned int LINE_LEN=77; |
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| 208 | const std::string indent(" "); |
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| 209 | std::cerr << "Usage:\n " << _command_name; |
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| 210 | int pos=_command_name.size()+2; |
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| 211 | for(Groups::iterator g=_groups.begin();g!=_groups.end();++g) { |
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| 212 | std::ostringstream cstr; |
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| 213 | cstr << ' '; |
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| 214 | if(!g->second.mandatory) cstr << '['; |
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| 215 | show(cstr,g); |
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| 216 | if(!g->second.mandatory) cstr << ']'; |
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| 217 | if(pos+cstr.str().size()>LINE_LEN) { |
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| 218 | std::cerr << std::endl << indent; |
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| 219 | pos=indent.size(); |
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| 220 | } |
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| 221 | std::cerr << cstr.str(); |
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| 222 | pos+=cstr.str().size(); |
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| 223 | } |
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| 224 | for(Opts::iterator i=_opts.begin();i!=_opts.end();++i) |
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| 225 | if(!i->second.ingroup&&!i->second.syn) { |
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| 226 | std::ostringstream cstr; |
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| 227 | cstr << ' '; |
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| 228 | if(!i->second.mandatory) cstr << '['; |
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| 229 | show(cstr,i); |
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| 230 | if(!i->second.mandatory) cstr << ']'; |
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| 231 | if(pos+cstr.str().size()>LINE_LEN) { |
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| 232 | std::cerr << std::endl << indent; |
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| 233 | pos=indent.size(); |
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| 234 | } |
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| 235 | std::cerr << cstr.str(); |
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| 236 | pos+=cstr.str().size(); |
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| 237 | } |
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| 238 | for(std::vector<OtherArg>::iterator i=_others_help.begin(); |
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| 239 | i!=_others_help.end();++i) |
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| 240 | { |
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| 241 | std::ostringstream cstr; |
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| 242 | cstr << ' ' << i->name; |
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| 243 | |
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| 244 | if(pos+cstr.str().size()>LINE_LEN) { |
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| 245 | std::cerr << std::endl << indent; |
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| 246 | pos=indent.size(); |
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| 247 | } |
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| 248 | std::cerr << cstr.str(); |
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| 249 | pos+=cstr.str().size(); |
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| 250 | } |
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| 251 | std::cerr << std::endl; |
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| 252 | } |
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| 253 | |
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| 254 | void ArgParser::showHelp() |
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| 255 | { |
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| 256 | shortHelp(); |
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| 257 | std::cerr << "Where:\n"; |
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| 258 | for(std::vector<OtherArg>::iterator i=_others_help.begin(); |
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| 259 | i!=_others_help.end();++i) showHelp(i); |
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| 260 | for(Opts::iterator i=_opts.begin();i!=_opts.end();++i) showHelp(i); |
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| 261 | exit(1); |
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| 262 | } |
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| 263 | |
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| 264 | |
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| 265 | void ArgParser::unknownOpt(std::string arg) |
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| 266 | { |
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| 267 | std::cerr << "\nUnknown option: " << arg << "\n"; |
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| 268 | std::cerr << "\nType '" << _command_name << |
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| 269 | " --help' to obtain a short summary on the usage.\n\n"; |
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| 270 | exit(1); |
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| 271 | } |
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| 272 | |
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| 273 | void ArgParser::requiresValue(std::string arg, OptType t) |
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| 274 | { |
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| 275 | std::cerr << "Argument '" << arg << "' requires a"; |
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| 276 | switch(t) { |
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| 277 | case STRING: |
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| 278 | std::cerr << " string"; |
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| 279 | break; |
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| 280 | case INTEGER: |
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| 281 | std::cerr << "n integer"; |
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| 282 | break; |
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| 283 | case DOUBLE: |
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| 284 | std::cerr << " floating point"; |
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| 285 | break; |
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| 286 | default: |
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| 287 | break; |
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| 288 | } |
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| 289 | std::cerr << " value\n\n"; |
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| 290 | showHelp(); |
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| 291 | } |
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| 292 | |
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| 293 | |
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| 294 | void ArgParser::checkMandatories() |
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| 295 | { |
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| 296 | bool ok=true; |
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| 297 | for(Opts::iterator i=_opts.begin();i!=_opts.end();++i) |
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| 298 | if(i->second.mandatory&&!i->second.set) |
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| 299 | { |
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| 300 | if(ok) |
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| 301 | std::cerr << _command_name |
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| 302 | << ": The following mandatory arguments are missing.\n"; |
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| 303 | ok=false; |
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| 304 | showHelp(i); |
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| 305 | } |
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| 306 | for(Groups::iterator i=_groups.begin();i!=_groups.end();++i) |
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| 307 | if(i->second.mandatory||i->second.only_one) |
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| 308 | { |
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| 309 | int set=0; |
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| 310 | for(GroupData::Opts::iterator o=i->second.opts.begin(); |
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| 311 | o!=i->second.opts.end();++o) |
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| 312 | if(_opts.find(*o)->second.set) ++set; |
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| 313 | if(i->second.mandatory&&!set) { |
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| 314 | std::cerr << _command_name |
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| 315 | << ": At least one of the following arguments is mandatory.\n"; |
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| 316 | ok=false; |
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| 317 | for(GroupData::Opts::iterator o=i->second.opts.begin(); |
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| 318 | o!=i->second.opts.end();++o) |
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| 319 | showHelp(_opts.find(*o)); |
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| 320 | } |
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| 321 | if(i->second.only_one&&set>1) { |
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| 322 | std::cerr << _command_name |
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| 323 | << ": At most one of the following arguments can be given.\n"; |
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| 324 | ok=false; |
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| 325 | for(GroupData::Opts::iterator o=i->second.opts.begin(); |
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| 326 | o!=i->second.opts.end();++o) |
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| 327 | showHelp(_opts.find(*o)); |
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| 328 | } |
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| 329 | } |
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| 330 | if(!ok) { |
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| 331 | std::cerr << "\nType '" << _command_name << |
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| 332 | " --help' to obtain a short summary on the usage.\n\n"; |
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| 333 | exit(1); |
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| 334 | } |
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| 335 | } |
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| 336 | |
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| 337 | ArgParser &ArgParser::parse() |
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| 338 | { |
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| 339 | for(int ar=1; ar<_argc; ++ar) { |
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| 340 | std::string arg(_argv[ar]); |
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| 341 | if (arg[0] != '-' || arg.size() == 1) { |
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| 342 | _file_args.push_back(arg); |
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| 343 | } |
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| 344 | else { |
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| 345 | Opts::iterator i = _opts.find(arg.substr(1)); |
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| 346 | if(i==_opts.end()) unknownOpt(arg); |
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| 347 | else { |
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| 348 | if(i->second.syn) i=_opts.find(i->second.help); |
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| 349 | ParData &p(i->second); |
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| 350 | if (p.type==BOOL) *p.bool_p=true; |
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| 351 | else if (p.type==FUNC) p.func_p.p(p.func_p.data); |
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| 352 | else if(++ar==_argc) requiresValue(arg, p.type); |
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| 353 | else { |
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| 354 | std::string val(_argv[ar]); |
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| 355 | std::istringstream vals(val); |
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| 356 | switch(p.type) { |
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| 357 | case STRING: |
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| 358 | *p.string_p=val; |
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| 359 | break; |
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| 360 | case INTEGER: |
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| 361 | vals >> *p.int_p; |
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| 362 | break; |
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| 363 | case DOUBLE: |
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| 364 | vals >> *p.double_p; |
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| 365 | break; |
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| 366 | default: |
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| 367 | break; |
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| 368 | } |
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| 369 | if(p.type!=STRING&&(!vals||!vals.eof())) |
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| 370 | requiresValue(arg, p.type); |
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| 371 | } |
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| 372 | p.set = true; |
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| 373 | } |
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| 374 | } |
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| 375 | } |
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| 376 | checkMandatories(); |
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| 377 | |
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| 378 | return *this; |
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| 379 | } |
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| 380 | |
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| 381 | } |
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