Struct clap_port_flag::Port

pub struct Port { /* fields omitted */ }

Easily add a --port flag to Structopt.

Usage

extern crate clap_port_flag;
#[macro_use] extern crate structopt;

use structopt::StructOpt;
use clap_port_flag::Port;

#[derive(Debug, StructOpt)]
struct Cli {
  #[structopt(flatten)]
  port: Port,
}

Methods

impl Port

Create a TCP socket.

Panics

If a file descriptor was passed directly, we call the unsafe TcpListener::from_raw_fd() method, which may panic if a non-existent file descriptor was passed.

pub fn bind(&self) -> Result<TcpListener>

Create a TCP socket from the passed in port or file descriptor.

pub fn bind_or(&self, port: u16) -> Result<TcpListener>

Create a TCP socket by calling to .bind(). If it fails, create a socket on port.

Useful to create a default socket to listen to if none was passed.

Trait Implementations

impl StructOpt for Port

fn clap<'a, 'b>() -> App<'a, 'b>

Returns the corresponding clap::App.

fn from_clap(matches: &ArgMatches) -> Self

Creates the struct from clap::ArgMatches. It cannot fail with a parameter generated by clap by construction.

fn from_args() -> Self

Gets the struct from the command line arguments. Print the error message and quit the program in case of failure.

fn from_iter<I>(iter: I) -> Self where     I: IntoIterator,     <I as IntoIterator>::Item: Into<OsString>,     <I as IntoIterator>::Item: Clone,

Gets the struct from any iterator such as a Vec of your making. Print the error message and quit the program in case of failure.

fn from_iter_safe<I>(iter: I) -> Result<Self, Error> where     I: IntoIterator,     <I as IntoIterator>::Item: Into<OsString>,     <I as IntoIterator>::Item: Clone,

Gets the struct from any iterator such as a Vec of your making.

impl Debug for Port

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.