use std::process::Command;
use regex::Regex;
pub struct SwVers {
pub product_name: Option<String>,
pub product_version: Option<String>,
pub build_version: Option<String>
}
fn extract_from_regex(stdout: &String, regex: Regex) -> Option<String> {
match regex.captures_iter(&stdout).next() {
Some(m) => {
match m.get(1) {
Some(s) => {
Some(s.as_str().to_owned())
},
None => None
}
},
None => None
}
}
pub fn is_os_x() -> bool {
match Command::new("sw_vers").output() {
Ok(output) => output.status.success(),
Err(_) => false
}
}
pub fn retrieve() -> Option<SwVers> {
let output = match Command::new("sw_vers").output() {
Ok(output) => output,
Err(_) => return None
};
let stdout = String::from_utf8_lossy(&output.stdout);
Some(parse(stdout.to_string()))
}
pub fn parse(version_str: String) -> SwVers {
let product_name_regex = Regex::new(r"ProductName:\s([\w\s]+)\n").unwrap();
let product_version_regex = Regex::new(r"ProductVersion:\s(\w+\.\w+\.\w+)").unwrap();
let build_number_regex = Regex::new(r"BuildVersion:\s(\w+)").unwrap();
SwVers {
product_name: extract_from_regex(&version_str, product_name_regex),
product_version: extract_from_regex(&version_str, product_version_regex),
build_version: extract_from_regex(&version_str, build_number_regex),
}
}