Re: [Boost-users] [program options] count problem

2 Feb 2013


      Thanks Diederick. Did not do the trick.
How I can I access the variables stored in vm ?

Regards,

Olivier

2013/2/2 Diederick C. Niehorster 
...
This call I use works for me:
po::command_line_parser(argc, ppargv).options(desc).run()
Don't know if there is an important difference here, or if what you
call is just a wrapper around it, but see if that works for you.
Best,
Dee
On Sat, Feb 2, 2013 at 9:14 PM, Olivier Tournaire 
wrote:
...
Oups. Made à mistake ... However the issue is still there:
if (vm.count("hierarchy"))
    {
        path input_path(hierarchy);
        // DO STUFF
    }
    else if (vm.count("file"))
{
        for(unsigned int i=0;i
{
        for(unsigned int i=0;i
cout << desc << endl;
        return 1;
    }
Le samedi 2 février 2013, Olivier Tournaire a écrit :
...
Hi all,
I am having troubles with program options. I try to test if at least
some
of the available options are passed on the command line, but fail for
some
reason using count("option_name"). Here is my code:
int main(int argc, char** argv)
{
    string hierarchy;
    vector<string> files, directories;
    double vertical_shift;
    bool show_progress, single_file, single_dir;
    int target_EPSG, nb_threads;
po::options_description desc("Allowed options");
    desc.add_options()
        ("help           ,h"
, "Produce help message")
        ("hierarchy        ", po::value<string>(&hierarchy)
, "process a hierarchy)
        ("file             ", po::value(&files)
, "process the specified files")
        ("directory        ", po::value(&directories)
, "process the specified directories");
po::variables_map vm;
    try
    {
        po::store(po::parse_command_line(argc, argv, desc), vm);
if (vm.count("help"))
        {
            cout << desc << "\n";
            return 1;
        }
po::notify(vm);
    }
    catch (const po::error &e)
    {
        cerr << "Exception caught ! --> " << e.what() << endl;
        cout << desc << endl;
        return 1;
    }
if (vm.count("hierarchy"))
    {
        path input_path(hierarchy);
        // DO STUFF
    }
    else if (vm.count("files"))
    {
        for(unsigned int i=0;i
I always fall in the "else". What am I doing wrong?
For instance with this command line : ./acute_coordinates_transform
--hierarchy ~/work/data/
À other question: is there à way to specify that 1 of the 3 options is
required (and only 1)?
Hope you cloud help.
Regards,
Olivier
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