utilities/rocflu/init/main.C

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/* *******************************************************************
 * Illinois Open Source License                                      *
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 * University of Illinois/NCSA                                       * 
 * Open Source License                                               *
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 *  Developed by:                                                    *
 *                                                                   *
 *     Center for Simulation of Advanced Rockets                     *
 *                                                                   *
 *     University of Illinois                                        *
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 *     www.csar.uiuc.edu                                             *
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 * obtaining a copy of this software and associated documentation    *
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#include <iostream>
#include <vector>
#include <list>
#include <sstream>

using namespace std;

#include "clop.H"
#include "FC.h"

extern "C" { 
  void FC_GLOBAL(rfluinit,RFLUINIT)(const char *,int *,long int);
}

void
Usage(const string &pn)
{
  cout << endl << "Usage: " << pn << " -c <casename> [-v 0-2]" << endl << endl
       << "   -c | --casename  :  Specifies the casename" << endl
       << "   -v | --verbosity :  Verbosity level:" << endl
       << "                       0 - Quiet" << endl
       << "                       1 - Moderately verbose" << endl
       << "                       2 - Ridiculously verbose" << endl
       << endl;
}

int
main(int argc,char *argv[])
{
  // Get the commandline into a string vector - it's easier
  // to deal with that way.
  vector<string> args = Vectize((const char **)argv,argc);

  // Get the name of the executable by stripping off any leading
  // directory names
  string program_name(stripdir(args[0]));

  // Specify the allowable options to the program
  AddOp("casename",'c');
  AddOp("verbosity",'v');
  AddOp("help",'h');
  
  // Declare some variables for command line argument handling
  string casename;
  string sverb;
  int verbosity;
  bool help;
  bool isset;
  
  // See if the help option is specified, if so give'm the usage text
  if(help = GetOp("help",args)){
    Usage(program_name);
    exit(0);
  }

  // Process casename option, if it's not set then fail
  if(GetOp("casename",casename,args)){
    if(casename.empty()){ // casename was empty
      cerr << program_name 
           << ": Expected casename after casename option."
           << " Use -h for usage instructions."
           << endl;
      exit(1);
    }
  }
  else{ // option not specified (but it's required!)
    cerr << program_name
         << ": Missing required casename option."
         << "  Use -h for usage instructions."
         << endl;
    exit(1);
  }      

  // Process verbosity option
  if(GetOp("verbosity",sverb,args)){
    if(sverb.empty()){
      cerr << program_name
           << ": Expected verbosity level. "
           << "Use -h for usage instructions." << endl;
      exit(1);
    }
    istringstream Istr(sverb);
    Istr >> verbosity;
    if(verbosity < 0 || verbosity > 2){ // Some jerk specified a non numeric or negative
      cerr << program_name
           << ": Invalid verbosity value.  Use -h for usage "
           << "instructions." << endl;
      exit(1);
    }
  }
  else{ // Default verbosity
    verbosity = 1;
  }

  FC_GLOBAL(rfluinit,RFLUINIT)(casename.c_str(),&verbosity,casename.length());
}