boost-program-options

问题 I'm struggling to get boost program options to work properly. I need to be able to start my program from the terminal window (Linux) with an optional argument that takes a value. No matter what I did, this would not work; no matter what value I typed from the terminal, it just returned the default value. Furthermore, if I did not include the option in my termina command, it returned with terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception

问题 I am using Ubuntu and boost v1.50. Previously I used boost program_options to feed a set of options into a program like so: #!/bin/bash ./prog --arg1 1 --arg2 "2" --arg3 {1,2,3} --arg4 {1,2} --arg5 5 So I am dealing with a mix of single integers, strings and integer arrays. This worked fine. However, after "improving" the code by introducing local variables in bash, I have: #!/bin/bash a1=1 a2="2" a3={1,2,3} a4={1,2} a5=5 ./prog --arg1 $a1 --arg2 $a2 --arg3 $a3 --arg4 $a4 --arg5 $a5 Executing

问题 I am trying to develop a simple program in C++ with the boost library. I develop with Visual Studio 2017 and a remote bash shell of ubuntu to compile and debug. I installed gdb, gdbserver, all the compiler and the boost library on ubuntu. Simple programs without boost compile and run without problem from the shell directly as from Visual Studio ! When I compile the following program directly from the ubuntu bash with the following command : g++ test.cpp -std=c++11 -lboost_program_options -o t

问题 I am having trouble with linking -lboost_program_options . I cannot even compile the minimum example first.cpp. Here is the cpp: // Copyright Vladimir Prus 2002-2004. // Distributed under the Boost Software License, Version 1.0. // (See accompanying file LICENSE_1_0.txt // or copy at http://www.boost.org/LICENSE_1_0.txt) /* The simplest usage of the library. */ #include <boost/program_options.hpp> namespace po = boost::program_options; #include <iostream> #include <iterator> using namespace

问题 Has anyone worked out how to get boost program options to parse case insensitive argument lists In the boost documentation, it appears that it is supported. See http://www.boost.org/doc/libs/1_53_0/boost/program_options/cmdline.hpp Namely, setting the style_t enum flag such as long_case_insensitive. However, I'm not sure how to do it. Eg how would you get the following code snippet to accept --Help or --help or --HELP po::options_description desc("Allowed options"); desc.add_options() ("help"

问题 The default syntax for Boost::Program_Options is "--DEVICE iphone". How can I support syntax "-DEVICE:iphone" or "-DEVICE=iphone"? 回答1: Boost.Program_Options has a pretty large number of option styles. The particular combination you seem to be going for would be: command_line_style::long_allow_adjacent | command_line_style::short_allow_adjacent | command_line_style::allow_long_disguise These options should be given to the style function of your command line parser: po::store(po::command_line

问题 With command line options, I can do the following: po::variables_map vm; auto parsedOptions = po::command_line_parser(argc, argv).options(optionsDescription1).allow_unregistered().run(); po::store(parsedOptions, vm); po::notify(vm); auto unregistered = po::collect_unrecognized(parsedOptions.options, po::include_positional); po::variables_map vm2; auto parsedOptions2 = po::command_line_parser(unregistered).options(optionsDescription2).run(); po::store(parsedOptions2, vm2); po::notify(vm2);

问题 Is it possible to use parameters of this kind with boost::program_options? program -p1 123 -p2 234 -p3 345 -p12 678 i.e., is it possible to specify the parameter name with a first token (e.g. -p ) followed by a number, dynamically? I would like to avoid this: program -p 1 123 -p 2 234 -p 3 345 -p 12 678 回答1: Boost.ProgramOptions does not provide direct support for this. Nevertheless, there are two general solutions that each have their trade-offs: Wildcard options. Custom parser. Wildcard

问题 I was looking for a solution to store program settings or options or configuration in C++. These could be settings that are exposed in a GUI and need to be saved between runs of my code. In my search I came across boost.PropertyTree which seemed to be a good choice. I know boost is well respected code so I'm comfortable using it and so I started developing using this. Then I come across boost.program_options which seems to allow you to do the same thing but also looks more specialized for the

问题 It is possible with boost program options library: http://www.boost.org/doc/libs/1_64_0/doc/html/program_options.html to read json formatted file as an input file here? Or if I have some config in json like file, I need to parse it myself, with for example: http://www.boost.org/doc/libs/1_64_0/doc/html/property_tree.html 回答1: I've met the same problem. Here is my implementation of JSON parser for program_options library, based on property_tree: template <class charT> void parseChildren(std: