2022-07-09 08:33:19 +00:00
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use std::collections::HashMap;
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2022-07-09 13:53:01 +00:00
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use std::io;
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use std::io::Write;
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2022-07-09 08:33:19 +00:00
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2022-07-12 08:30:15 +00:00
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pub struct ArgsResult {
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pub map: HashMap<String, String>,
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pub regex_cmds: Vec<String>,
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}
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pub fn get_args() -> ArgsResult {
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2022-07-09 08:33:19 +00:00
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let mut map = HashMap::new();
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2022-07-12 08:30:15 +00:00
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let mut regex_cmds = Vec::new();
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2022-07-09 08:33:19 +00:00
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2022-07-10 08:02:54 +00:00
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let mut first = true;
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2022-07-09 08:33:19 +00:00
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for arg in std::env::args() {
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2022-07-10 08:02:54 +00:00
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if first {
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first = false;
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continue;
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} else if arg.starts_with("--netdev=") {
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2022-07-09 08:33:19 +00:00
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let (_, back) = arg.split_at(9);
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map.insert("netdev".into(), back.into());
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2022-07-09 09:18:12 +00:00
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} else if arg.starts_with("--interval-sec=") {
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let (_, back) = arg.split_at(15);
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map.insert("interval-sec".into(), back.into());
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2022-07-12 08:30:15 +00:00
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} else if arg.starts_with("--regex-cmd=") {
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let (_, back) = arg.split_at(12);
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regex_cmds.push(back.to_owned());
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2022-07-10 08:47:51 +00:00
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} else if arg == "--help" || arg == "-h" {
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2022-07-09 09:18:12 +00:00
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map.insert("help".into(), "".into());
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2022-07-10 08:02:54 +00:00
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} else {
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let mut stderr_handle = io::stderr().lock();
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stderr_handle
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.write_all(format!("WARNING: Got invalid arg \"{}\"!\n", arg).as_bytes())
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.ok();
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2022-07-09 08:33:19 +00:00
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}
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}
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2022-07-12 08:30:15 +00:00
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ArgsResult { map, regex_cmds }
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2022-07-09 08:33:19 +00:00
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}
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2022-07-09 09:18:12 +00:00
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pub fn print_usage() {
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2022-07-09 13:53:01 +00:00
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let mut stderr_handle = io::stderr().lock();
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stderr_handle.write_all(b"Usage:\n").ok();
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2022-07-10 08:47:51 +00:00
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stderr_handle
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2022-07-12 08:30:15 +00:00
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.write_all(b" -h | --help\t\t\t\tPrints help\n")
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.ok();
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stderr_handle
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.write_all(b" --netdev=<device_name>\t\tCheck network traffic on specified device\n")
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2022-07-10 08:47:51 +00:00
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.ok();
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2022-07-09 13:53:01 +00:00
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stderr_handle
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2022-07-12 08:30:15 +00:00
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.write_all(b" --interval-sec=<seconds>\t\tOutput at intervals of <seconds> (default 5)\n")
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2022-07-09 13:53:01 +00:00
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.ok();
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stderr_handle
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2022-07-12 08:30:15 +00:00
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.write_all(
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b" --regex-cmd=<cmd>,<args...>,<regex>\tUse an output of a command as a metric\n",
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)
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2022-07-09 13:53:01 +00:00
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.ok();
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2022-07-09 09:18:12 +00:00
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}
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