475 lines
13 KiB
C++
Executable File
475 lines
13 KiB
C++
Executable File
/* -*- mode: C++; indent-tabs-mode: nil; -*-
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*
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* This file is a part of LEMON, a generic C++ optimization library.
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*
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* Copyright (C) 2003-2010
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* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
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* (Egervary Research Group on Combinatorial Optimization, EGRES).
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*
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* Permission to use, modify and distribute this software is granted
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* provided that this copyright notice appears in all copies. For
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* precise terms see the accompanying LICENSE file.
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*
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* This software is provided "AS IS" with no warranty of any kind,
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* express or implied, and with no claim as to its suitability for any
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* purpose.
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*
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*/
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#include <lemon/arg_parser.h>
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namespace lemon {
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void ArgParser::_terminate(ArgParserException::Reason reason) const
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{
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if(_exit_on_problems)
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exit(1);
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else throw(ArgParserException(reason));
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}
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void ArgParser::_showHelp(void *p)
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{
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(static_cast<ArgParser*>(p))->showHelp();
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(static_cast<ArgParser*>(p))->_terminate(ArgParserException::HELP);
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}
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ArgParser::ArgParser(int argc, const char * const *argv)
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:_argc(argc), _argv(argv), _command_name(argv[0]),
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_exit_on_problems(true) {
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funcOption("-help","Print a short help message",_showHelp,this);
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synonym("help","-help");
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synonym("h","-help");
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}
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ArgParser::~ArgParser()
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{
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for(Opts::iterator i=_opts.begin();i!=_opts.end();++i)
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if(i->second.self_delete)
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switch(i->second.type) {
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case BOOL:
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delete i->second.bool_p;
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break;
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case STRING:
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delete i->second.string_p;
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break;
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case DOUBLE:
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delete i->second.double_p;
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break;
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case INTEGER:
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delete i->second.int_p;
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break;
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case UNKNOWN:
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break;
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case FUNC:
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break;
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}
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}
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ArgParser &ArgParser::intOption(const std::string &name,
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const std::string &help,
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int value, bool obl)
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{
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ParData p;
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p.int_p=new int(value);
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p.self_delete=true;
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p.help=help;
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p.type=INTEGER;
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p.mandatory=obl;
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_opts[name]=p;
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return *this;
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}
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ArgParser &ArgParser::doubleOption(const std::string &name,
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const std::string &help,
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double value, bool obl)
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{
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ParData p;
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p.double_p=new double(value);
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p.self_delete=true;
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p.help=help;
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p.type=DOUBLE;
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p.mandatory=obl;
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_opts[name]=p;
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return *this;
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}
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ArgParser &ArgParser::boolOption(const std::string &name,
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const std::string &help,
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bool value, bool obl)
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{
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ParData p;
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p.bool_p=new bool(value);
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p.self_delete=true;
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p.help=help;
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p.type=BOOL;
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p.mandatory=obl;
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_opts[name]=p;
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return *this;
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}
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ArgParser &ArgParser::stringOption(const std::string &name,
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const std::string &help,
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std::string value, bool obl)
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{
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ParData p;
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p.string_p=new std::string(value);
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p.self_delete=true;
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p.help=help;
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p.type=STRING;
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p.mandatory=obl;
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_opts[name]=p;
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return *this;
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}
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ArgParser &ArgParser::refOption(const std::string &name,
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const std::string &help,
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int &ref, bool obl)
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{
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ParData p;
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p.int_p=&ref;
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p.self_delete=false;
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p.help=help;
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p.type=INTEGER;
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p.mandatory=obl;
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_opts[name]=p;
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return *this;
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}
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ArgParser &ArgParser::refOption(const std::string &name,
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const std::string &help,
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double &ref, bool obl)
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{
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ParData p;
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p.double_p=&ref;
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p.self_delete=false;
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p.help=help;
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p.type=DOUBLE;
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p.mandatory=obl;
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_opts[name]=p;
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return *this;
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}
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ArgParser &ArgParser::refOption(const std::string &name,
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const std::string &help,
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bool &ref, bool obl)
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{
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ParData p;
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p.bool_p=&ref;
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p.self_delete=false;
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p.help=help;
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p.type=BOOL;
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p.mandatory=obl;
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_opts[name]=p;
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ref = false;
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return *this;
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}
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ArgParser &ArgParser::refOption(const std::string &name,
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const std::string &help,
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std::string &ref, bool obl)
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{
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ParData p;
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p.string_p=&ref;
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p.self_delete=false;
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p.help=help;
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p.type=STRING;
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p.mandatory=obl;
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_opts[name]=p;
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return *this;
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}
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ArgParser &ArgParser::funcOption(const std::string &name,
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const std::string &help,
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void (*func)(void *),void *data)
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{
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ParData p;
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p.func_p.p=func;
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p.func_p.data=data;
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p.self_delete=false;
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p.help=help;
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p.type=FUNC;
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p.mandatory=false;
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_opts[name]=p;
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return *this;
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}
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ArgParser &ArgParser::optionGroup(const std::string &group,
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const std::string &opt)
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{
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Opts::iterator i = _opts.find(opt);
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LEMON_ASSERT(i!=_opts.end(), "Unknown option: '"+opt+"'");
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LEMON_ASSERT(!(i->second.ingroup),
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"Option already in option group: '"+opt+"'");
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GroupData &g=_groups[group];
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g.opts.push_back(opt);
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i->second.ingroup=true;
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return *this;
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}
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ArgParser &ArgParser::onlyOneGroup(const std::string &group)
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{
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GroupData &g=_groups[group];
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g.only_one=true;
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return *this;
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}
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ArgParser &ArgParser::synonym(const std::string &syn,
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const std::string &opt)
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{
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Opts::iterator o = _opts.find(opt);
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Opts::iterator s = _opts.find(syn);
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LEMON_ASSERT(o!=_opts.end(), "Unknown option: '"+opt+"'");
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LEMON_ASSERT(s==_opts.end(), "Option already used: '"+syn+"'");
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ParData p;
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p.help=opt;
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p.mandatory=false;
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p.syn=true;
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_opts[syn]=p;
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o->second.has_syn=true;
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return *this;
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}
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ArgParser &ArgParser::mandatoryGroup(const std::string &group)
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{
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GroupData &g=_groups[group];
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g.mandatory=true;
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return *this;
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}
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ArgParser &ArgParser::other(const std::string &name,
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const std::string &help)
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{
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_others_help.push_back(OtherArg(name,help));
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return *this;
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}
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void ArgParser::show(std::ostream &os,Opts::const_iterator i) const
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{
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os << "-" << i->first;
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if(i->second.has_syn)
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for(Opts::const_iterator j=_opts.begin();j!=_opts.end();++j)
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if(j->second.syn&&j->second.help==i->first)
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os << "|-" << j->first;
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switch(i->second.type) {
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case STRING:
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os << " str";
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break;
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case INTEGER:
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os << " int";
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break;
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case DOUBLE:
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os << " num";
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break;
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default:
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break;
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}
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}
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void ArgParser::show(std::ostream &os,Groups::const_iterator i) const
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{
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GroupData::Opts::const_iterator o=i->second.opts.begin();
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while(o!=i->second.opts.end()) {
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show(os,_opts.find(*o));
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++o;
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if(o!=i->second.opts.end()) os<<'|';
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}
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}
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void ArgParser::showHelp(Opts::const_iterator i) const
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{
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if(i->second.help.size()==0||i->second.syn) return;
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std::cerr << " ";
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show(std::cerr,i);
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std::cerr << std::endl;
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std::cerr << " " << i->second.help << std::endl;
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}
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void ArgParser::showHelp(std::vector<ArgParser::OtherArg>::const_iterator i)
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const
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{
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if(i->help.size()==0) return;
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std::cerr << " " << i->name << std::endl
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<< " " << i->help << std::endl;
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}
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void ArgParser::shortHelp() const
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{
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const unsigned int LINE_LEN=77;
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const std::string indent(" ");
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std::cerr << "Usage:\n " << _command_name;
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int pos=_command_name.size()+2;
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for(Groups::const_iterator g=_groups.begin();g!=_groups.end();++g) {
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std::ostringstream cstr;
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cstr << ' ';
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if(!g->second.mandatory) cstr << '[';
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show(cstr,g);
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if(!g->second.mandatory) cstr << ']';
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if(pos+cstr.str().size()>LINE_LEN) {
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std::cerr << std::endl << indent;
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pos=indent.size();
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}
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std::cerr << cstr.str();
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pos+=cstr.str().size();
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}
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for(Opts::const_iterator i=_opts.begin();i!=_opts.end();++i)
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if(!i->second.ingroup&&!i->second.syn) {
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std::ostringstream cstr;
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cstr << ' ';
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if(!i->second.mandatory) cstr << '[';
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show(cstr,i);
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if(!i->second.mandatory) cstr << ']';
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if(pos+cstr.str().size()>LINE_LEN) {
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std::cerr << std::endl << indent;
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pos=indent.size();
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}
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std::cerr << cstr.str();
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pos+=cstr.str().size();
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}
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for(std::vector<OtherArg>::const_iterator i=_others_help.begin();
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i!=_others_help.end();++i)
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{
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std::ostringstream cstr;
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cstr << ' ' << i->name;
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if(pos+cstr.str().size()>LINE_LEN) {
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std::cerr << std::endl << indent;
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pos=indent.size();
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}
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std::cerr << cstr.str();
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pos+=cstr.str().size();
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}
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std::cerr << std::endl;
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}
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void ArgParser::showHelp() const
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{
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shortHelp();
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std::cerr << "Where:\n";
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for(std::vector<OtherArg>::const_iterator i=_others_help.begin();
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i!=_others_help.end();++i) showHelp(i);
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for(Opts::const_iterator i=_opts.begin();i!=_opts.end();++i) showHelp(i);
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_terminate(ArgParserException::HELP);
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}
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void ArgParser::unknownOpt(std::string arg) const
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{
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std::cerr << "\nUnknown option: " << arg << "\n";
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std::cerr << "\nType '" << _command_name <<
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" --help' to obtain a short summary on the usage.\n\n";
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_terminate(ArgParserException::UNKNOWN_OPT);
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}
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void ArgParser::requiresValue(std::string arg, OptType t) const
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{
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std::cerr << "Argument '" << arg << "' requires a";
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switch(t) {
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case STRING:
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std::cerr << " string";
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break;
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case INTEGER:
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std::cerr << "n integer";
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break;
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case DOUBLE:
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std::cerr << " floating point";
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break;
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default:
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break;
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}
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std::cerr << " value\n\n";
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showHelp();
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}
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void ArgParser::checkMandatories() const
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{
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bool ok=true;
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for(Opts::const_iterator i=_opts.begin();i!=_opts.end();++i)
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if(i->second.mandatory&&!i->second.set)
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{
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if(ok)
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std::cerr << _command_name
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<< ": The following mandatory arguments are missing.\n";
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ok=false;
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showHelp(i);
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}
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for(Groups::const_iterator i=_groups.begin();i!=_groups.end();++i)
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if(i->second.mandatory||i->second.only_one)
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{
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int set=0;
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for(GroupData::Opts::const_iterator o=i->second.opts.begin();
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o!=i->second.opts.end();++o)
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if(_opts.find(*o)->second.set) ++set;
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if(i->second.mandatory&&!set) {
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std::cerr << _command_name <<
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": At least one of the following arguments is mandatory.\n";
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ok=false;
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for(GroupData::Opts::const_iterator o=i->second.opts.begin();
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o!=i->second.opts.end();++o)
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showHelp(_opts.find(*o));
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}
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if(i->second.only_one&&set>1) {
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std::cerr << _command_name <<
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": At most one of the following arguments can be given.\n";
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ok=false;
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for(GroupData::Opts::const_iterator o=i->second.opts.begin();
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o!=i->second.opts.end();++o)
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showHelp(_opts.find(*o));
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}
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}
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if(!ok) {
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std::cerr << "\nType '" << _command_name <<
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" --help' to obtain a short summary on the usage.\n\n";
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_terminate(ArgParserException::INVALID_OPT);
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}
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}
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ArgParser &ArgParser::parse()
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{
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for(int ar=1; ar<_argc; ++ar) {
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std::string arg(_argv[ar]);
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if (arg[0] != '-' || arg.size() == 1) {
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_file_args.push_back(arg);
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}
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else {
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Opts::iterator i = _opts.find(arg.substr(1));
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if(i==_opts.end()) unknownOpt(arg);
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else {
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if(i->second.syn) i=_opts.find(i->second.help);
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ParData &p(i->second);
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if (p.type==BOOL) *p.bool_p=true;
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else if (p.type==FUNC) p.func_p.p(p.func_p.data);
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else if(++ar==_argc) requiresValue(arg, p.type);
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else {
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std::string val(_argv[ar]);
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std::istringstream vals(val);
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switch(p.type) {
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case STRING:
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*p.string_p=val;
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break;
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case INTEGER:
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vals >> *p.int_p;
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break;
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case DOUBLE:
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vals >> *p.double_p;
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break;
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default:
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break;
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}
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if(p.type!=STRING&&(!vals||!vals.eof()))
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requiresValue(arg, p.type);
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}
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p.set = true;
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}
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}
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}
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checkMandatories();
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return *this;
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}
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}
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