Function grep

pub fn grep(args: Vec<String>) -> Result<String, Box<dyn Error>>

From an argument vector it returns a formatted string with the search results

Example

// Input test.txt contains:
// This function will never return and will immediately
// terminate the current process. The exit code is passed
//
// This Note that because this function never returns, and that
// it terminates the process, no destructors on the current

let args = !["/path/", "target_file.txt", "This"];

match regex_minigrep::grep(args) {
    Err(e) => {
        println!("Error while running MiniGrep: {}", e);
        process::exit(1);
    }
    Ok(content) => print!("{}", content),
}

// Output to the terminal will be:
// This function will never return and will immediately
// This Note that because this function never returns, and that