120 lines
4 KiB
C++
120 lines
4 KiB
C++
//-----------------------------------------------------------------------------
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// make_help.h
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// (c) Maarten Keijzer, Marc Schoenauer and GeNeura Team, 2001
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/*
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Contact: todos@geneura.ugr.es, http://geneura.ugr.es
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Marc.Schoenauer@polytechnique.fr
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mkeijzer@dhi.dk
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*/
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//-----------------------------------------------------------------------------
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#ifdef _MSC_VER
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// to avoid long name warnings
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#pragma warning(disable:4786)
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#endif
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#include <cstdlib>
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#include <fstream>
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#include <stdexcept>
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#include <utils/eoParser.h>
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using namespace std;
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/** Generation of the status file, and output of the help message if needed
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*
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* MUST be called after ALL parameters have been read in order to list them
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*
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* Warning: this is a plain .cpp file and shoudl NOT be included anywhere,
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* but compiled separately and stored in a library.
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*
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* It is declared in all make_xxx.h files in representation-dependent dirs
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* but it is NOT representation-dependent itself - that's why it's in utils
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*/
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void make_help(eoParser & _parser)
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{
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// name of the "status" file where all actual parameter values will be saved
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string str_status = _parser.ProgramName() + ".status"; // default value
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eoValueParam<string>& statusParam = _parser.createParam(str_status, "status","Status file",'\0', "Persistence" );
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// dump status file BEFORE help, so the user gets a chance to use it:
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// it's probably the case where she/he needs it most!!!
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// Only help parameter will not be in status file - but who cares???
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if (statusParam.value() != "")
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{
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ofstream os(statusParam.value().c_str());
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os << _parser; // and you can use that file as parameter file
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}
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// do the following AFTER ALL PARAMETERS HAVE BEEN PROCESSED
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// i.e. in case you need parameters somewhere else, postpone these
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if (_parser.userNeedsHelp())
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{
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_parser.printHelp(cout);
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cout << "You can use an edited copy of file " << statusParam.value()
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<< " as parameter file" << endl;
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exit(1);
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}
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}
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/** test a dir.
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* Creates it if does not exist
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* If exists, throws an exception or erase everything there,
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* depending on last parameter
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*
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* Always return true (for code easy writing on the other side :-)
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*/
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bool testDirRes(std::string _dirName, bool _erase=true)
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{
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string s = "test -d " + _dirName;
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int res = system(s.c_str());
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// test for (unlikely) errors
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if ( (res==-1) || (res==127) )
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{
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s = "Problem executing test of dir " + _dirName;
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throw runtime_error(s);
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}
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// now make sure there is a dir without any file in it - or quit
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if (res) // no dir present
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{
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s = string("mkdir ")+ _dirName;
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int res = system(s.c_str());
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(void)res;
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return true;
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}
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// else
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if (_erase) // OK to erase
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{
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s = string("/bin/rm ")+ _dirName + "/*";
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int res = system(s.c_str());
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(void)res;
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return true;
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}
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//else
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// WARNING: bug if dir exists and is empty; this says it is not!
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// shoudl use scandir instead - no time now :-((( MS Aug. 01
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s = "Dir " + _dirName + " is not empty";
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throw runtime_error(s);
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return true;
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}
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// Local Variables:
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// coding: iso-8859-1
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// mode: C++
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// c-file-offsets: ((c . 0))
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// c-file-style: "Stroustrup"
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// fill-column: 80
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// End:
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