42 lines
821 B
Rust
42 lines
821 B
Rust
use std::str::FromStr;
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extern crate hptp;
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#[derive(Debug)]
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struct Hostname {
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ip: String,
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port: u16,
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}
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struct InvalidHostnameError;
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impl FromStr for Hostname {
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type Err = InvalidHostnameError;
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fn from_str(s: &str) -> Result<Self, Self::Err> {
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let i = s.find(':').ok_or(InvalidHostnameError)?;
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Ok(Hostname {
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ip: s[..i].into(),
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port: s[i + 1..].parse().map_err(|_| InvalidHostnameError)?,
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})
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}
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}
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fn usage() {
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print!("usage:\n./3700send <host-ip>:<host-port>\n")
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}
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fn parse_args() -> Result<Hostname, ()> {
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std::env::args().nth(1).ok_or(())?.parse().map_err(|_| ())
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}
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fn main() {
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match parse_args() {
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Ok(x) => start(x),
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Err(_) => usage(),
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}
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}
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fn start(hn: Hostname) {
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println!("ip={}, port={}", hn.ip, hn.port)
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}
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