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Powerful C++ command-line argument parsing inspired by Python's argparse package

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Powerful command-line argument parsing library for C++, inspired by Python's excellent argparse library

This library provides almost all of the functionality of the Python argparse package, and also provides a similar API, albeit with a modern C++ flavor.

The code is licensed under the highly-permissive Boost Software License.

Features:

  • Lightweight (single header + single source file, minimal dependencies, limited template use for fast compilation)
  • Supports almost all of the functionality of the Python argparse package
  • Automatically generates highly-informative help and usage messages
  • Handles both optional and positional arguments
  • Subparser support, which provides builtin support for git/svn-style sub-commands
  • Supports flexible option syntax, including both Unix-style short options (-o) and GNU-style long options (--option) as accepted by getopt and getopt_long, as well as other option styles.
    • Multiple single-character options that don't take an argument can be specified together, e.g. -a -r -p can be specified as -arp
    • Unique abbreviations of multiple-character options can be used
    • A single argument to an option can be specified either as --long=value or as --long value.

Dependencies:

  • Makes use of C++14/C++1y features, and therefore requires GCC >= 4.9 or Clang >= 3.5.
    • std::experimental::optional
    • std::experimental::string_view
  • Boost >= 1.57
    • Boost.Any for storage of parsing results
    • Boost.LexicalCast for argument type conversion
    • Boost.Core for type printing in error messages

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Powerful C++ command-line argument parsing inspired by Python's argparse package

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