diff options
Diffstat (limited to 'vendor/clap/examples/tutorial_derive/04_02_validate.rs')
-rw-r--r-- | vendor/clap/examples/tutorial_derive/04_02_validate.rs | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/vendor/clap/examples/tutorial_derive/04_02_validate.rs b/vendor/clap/examples/tutorial_derive/04_02_validate.rs deleted file mode 100644 index 3391d5b..0000000 --- a/vendor/clap/examples/tutorial_derive/04_02_validate.rs +++ /dev/null @@ -1,34 +0,0 @@ -use std::ops::RangeInclusive; - -use clap::Parser; - -#[derive(Parser)] -#[command(author, version, about, long_about = None)] -struct Cli { - /// Network port to use - #[arg(value_parser = port_in_range)] - port: u16, -} - -fn main() { - let cli = Cli::parse(); - - println!("PORT = {}", cli.port); -} - -const PORT_RANGE: RangeInclusive<usize> = 1..=65535; - -fn port_in_range(s: &str) -> Result<u16, String> { - let port: usize = s - .parse() - .map_err(|_| format!("`{s}` isn't a port number"))?; - if PORT_RANGE.contains(&port) { - Ok(port as u16) - } else { - Err(format!( - "port not in range {}-{}", - PORT_RANGE.start(), - PORT_RANGE.end() - )) - } -} |