argfetch

command line argument parser for rust.

about

argfetch returns a string that has all the args separated by spaces
if the flag doesnt exist, or there is no value it will return an empty string

usage

run:

$ cargo add argfetch

to use argfetch you have to pass flag you want to get the args from, and the vector of arguments

examples

in this example, we will be fetching the d flag:

fn main() {
  use argfetch::fetch;
  let args: Vec<String> = env::args().collect(); // get the arguments
  let args_value = fetch(String::from("-d"), &args); // the flag (-a in this example) has to be a string, and the args have to be passed as a reference
  if args_value.is_empty() { // check if its empty, which means the flag is missing, or has no value
    println!("the flag is missing, or is empty");
    std::process::exit(1); // exit
  }
  println!("{}", a_args);
}

running this code would output:

$ argfetch-example -d "hi" -a test -e some args
hi
$

instead if you wanted to fetch the a flag, you would do:

fn main() {
  use argfetch::fetch;
  let args: Vec<String> = env::args().collect();
  let args_value = fetch(String::from("-a"), &args);
  if args_value.is_empty() {
    println!("the flag is missing, or is empty");
    std::process::exit(1);
  }
}

then the output would be:

$ argfetch-example -d "hi" -a test -e some args
test
$

and for getting the e flag:

fn main() {
  use argfetch::fetch;
  let args: Vec<String> = env::args().collect();
  let a_args_value = fetch(String::from("-e"), &args);
  if a_args_value.is_empty() {
    println!("the flag is missing, or is empty");
    std::process::exit(1);
  }
}

then run:

$ argfetch-example -d "hi" -a test -e some args
some args
$

however, running it with no e flag, will output:

$ argfetch-example -d "hi" -a test
the flag is missing, or is empty
$