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#[cfg(test)]
#[path = "getat_func_test.rs"]
mod getat_func_test;
use envmnt;
pub(crate) fn invoke(function_args: &Vec<String>) -> Vec<String> {
if function_args.len() != 3 {
error!(
"split expects only 3 arguments (environment variable name, split by character, index)"
);
}
let env_key = function_args[0].clone();
let split_by = function_args[1].clone();
let index: usize = match function_args[2].parse() {
Ok(value) => value,
Err(error) => {
error!("Invalid index value: {}", &error);
return vec![]; }
};
if split_by.len() != 1 {
error!("split expects a single character separator");
}
let split_by_char = split_by.chars().next().unwrap();
let value = envmnt::get_or(&env_key, "");
if value.len() > index {
let splitted = value.split(split_by_char);
let splitted_vec: Vec<String> = splitted.map(|str_value| str_value.to_string()).collect();
let value = splitted_vec[index].clone();
vec![value]
} else {
vec![]
}
}