cmdp

Simple C++ command line arguments parser

This is a simple C++ command line arguments parser library

Options can be given as tag value pair

--tag value

Uses

#include <cmdp/cmdp.h>

Create a cmdp::CmdParser instance.

cmdp::CmdParser parser(argc, argv);

Then read the required or optional parameters.

// read required parameters
std::string filename = parser.get<std::string>("--filename");

// read optional parameters (just pass the default values)
float expRatio = parser.get<float>("--ratio", 100.56F);

Example

cpp main file:

int main(int argc, char* argv[])
{
    // input: --filename test.jpg --ratio 15.6

    // init and parse input args
    cmdp::CmdParser parser(argc, argv);

    // read required parameters (availabe in args)
    std::string filename = parser.get<std::string>("--filename");       // test.jpg

    // read optional parameters with default values (available in args)
    float ratio = parser.get<float>("--ratio", 100.56F);                // 15.6

    // read optional parameters with default values (missing in args)
    int enable = parser.get<int>("--enable", 10);                       // 10

    // read required parameters (missing in args)
    int value = parser.get<int>("--value");                             // 0 and set error flag

    // check if any required paramters are missing.
    if (parser.printStatus()) {                                          // print all params with status
        std::cout << "Invalid Input args" << std::endl;
        return 0;
    }
    //...

    return 0;
}

Output Result parser.printStatus():

[Type  ]   Tag           Value           Status
[string] --filename      test.jpg
[float ] --ratio         15.6
[int   ] --enable        10              Default
[int   ] --value         0               Missing

Invalid Input args

Linking

This is a header only library.

Requirements

The only build requirement is a C++ compiler that supports C++11 features such as:

• typeid
• default constructors