Command line arguments parsing library

Simple C and C++ library for resolving what command line arguments are options and their parameters.

About

This library provide a set of functions for C and C++ programs that helps resolving command line arguments. Library has a classification of command line arguments. There are:

• Option - argument started with - or -- symbols
• Option's parameter - argument that is next to option
• Command line parameter - argument that is not an option and not next to option

For example -o file has an option -o with option's parameter file.

And $program --print massage default is equal to $program default --print message and has command line parameter default (program is an executable file name), option --print with parameter massage.

Library usage

The code below print all passed options and their parameters:

#include <libcmdargs/libcmdargs.h>

int main(int argc, const char* argv)
{
    cmdargs_t* args = libcmdargs_parse(argc, argv);

    printf("OPTIONS:\n\n");

    if(args->options_count != 0)
    {
        for(size_t i = 0; i < args->options_count; i++)
        {
            printf("Option #%u: %s\n", i, args->options[i].option);

            if(args->options[i].parameter)
            {
                printf("Option param: %s\n", args->options[i].parameter);
            }
            else
            {
                printf("Option param: %s\n", "None");
            }
        }
    }
    else
    {
        printf("None!\n");
    }

    libcmdargs_free(args);

    return 0;
}

Also there are functions for checking wether specific option or parameter is present and for getting option's parameter:

int libcmdargs_isopt(const cmdargs_t* const args, const char* const opt);
int libcmdargs_isparam(const cmdargs_t* const args, const char* const param);
const char* const libcmdargs_getoptparam(const cmdargs_t* const args, const char* const opt);

Full description of parameters is in headerfile libcmdargs.h.

Library installation

To install command line arguments parsing library follow steps below:

1. Clone this repository: git clone https://github.com/eastev/LibCommandLineArguments.git
2. Enter the directory: cd LibCommandLineArguments
3. Build: make
4. Install: sudo make install

If tou want to uninstall this library run: sudo make unistall from cloned repo.

Communications

Feel free to ask me questions on email: alex.eastev@gmail.com

This library is a free software licensed under 3-Clause BSD license: https://opensource.org/licenses/BSD-3-Clause

Copyright © 2022 Alexander Elunin <https://github.com/eastev>