[Boost-users] [Boost.Program_options] some trouble w/ multitoken()?

From: Marc VIALA (mviala_at_[hidden])
Date: 2005-09-13 09:17:32

I'm just trying to use Boost.Program_options in an application and 
during my implementation, it appears a couple of questions: 
-        Is it possible to introduce more than one "multitoken" 
options in command line?
I didn't see any limitation in the documentation but my
sample hereafter seems to prove that yes. 
-        If the answer to the first question is yes, then how I can 
handle this feature?
I seemed that with the older version, 1.32, this feature was
supported? 
Thanks in advance. 
Best regards,
Marc VIALA
-------------------------------------------------------------- 
Test Configuration: 
-------------------------------------------------------------- 
        PC / WinXP SP2 
        Visual C++ 7.1 
        Boost 1.33 
-------------------------------------------------------------- 
Code Example: 
-------------------------------------------------------------- 
// How to use multitoken options in command line? 
#include <vector> 
#include <iostream> 
#include <iterator> 
#include <boost/program_options.hpp> 
#include <boost/lambda/lambda.hpp> 
using namespace boost ; 
using namespace boost::lambda ; 
namespace po = boost::program_options ; 
using namespace std ; 
int 
main(int argc, char* argv[] ) 
{ 
  string                  rootDir               ; 
  vector<string>          inputList, outputList ; 
  // Options declaration 
  po::options_description generic("Generic options") ; 
  generic.add_options() 
    ("help"     , "produce a help message"   ) 
    ("version"  , "output the version number") 
    ; 
  po::options_description mandatory("Mandatory options"); 
  mandatory.add_options() 
    ("root,r"   , po::value<string>(&rootDir) 
                , "set project root catalog"        ) 
    ("acq,a"    , po::value<vector<string> >(&inputList)->multitoken() 
                , "set list of acquisition catalog#") 
    ("measure,m", po::value<vector<string> >(&outputList)->multitoken() 
                , "set list of measurement catalog#") 
    ; 
  // Group mandatory & generic options 
  po::options_description cmdLineOpt("Allowed options") ; 
  cmdLineOpt.add(generic).add(mandatory) ; 
  // Simulate command line sample 
  vector<string> args = 
    po::split_winmain("-r Test --acq 11 tt 13 --measure 20 21 23"); 
  // Parse command line 
  po::variables_map vm ; 
  po::store(po::command_line_parser(args).options(cmdLineOpt).run(), 
vm); 
  po::notify(vm) ; 
  // Display options & args in command lines 
  cout << "root args   : \n" ; 
  if( vm.count("root") ) cout << '\t' << vm["root"].as<string>() << 
'\n' ; 
  cout << "acq args    : \n" ; 
  if( vm.count("acq") ) { 
    const vector<string>& vs = vm["acq"].as<vector<string> >() ; 
    for_each(vs.begin(), vs.end(), 
             cout << constant('\t') << _1 << constant('\n')) ; 
  } 
  cout << "measure args: \n" ; 
  if( vm.count("measure") ) { 
    const vector<string>& vs = vm["measure"].as<vector<string> >() ; 
    for_each(vs.begin(), vs.end(), 
             cout << constant('\t') << _1 << constant('\n')) ; 
  } 
  return 0 ; 
} 
-------------------------------------------------------------- 
-------------------------------------------------------------- 
Output results: 
-------------------------------------------------------------- 
root args   : 
        Test 
acq args    : 
        11 
        tt 
        13 
        --measure  (it seems to insert also option item w/ its args?) 
        20 
        21 
        23 
measure args: