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|
mod cast;
mod server;
mod watch;
use snafu::ResultExt as _;
#[derive(Debug, snafu::Snafu)]
pub enum Error {
#[snafu(display("failed to determine program name: {}", source))]
FindProgramName { source: crate::util::Error },
#[snafu(display("{}", source))]
Parse { source: clap::Error },
#[snafu(display("{}", source))]
Cast { source: crate::cmd::cast::Error },
#[snafu(display("{}", source))]
Server { source: crate::cmd::server::Error },
#[snafu(display("{}", source))]
Watch { source: crate::cmd::watch::Error },
}
pub type Result<T> = std::result::Result<T, Error>;
struct Command {
name: &'static str,
cmd: &'static for<'a, 'b> Fn(clap::App<'a, 'b>) -> clap::App<'a, 'b>,
run: &'static for<'a> Fn(&clap::ArgMatches<'a>) -> Result<()>,
}
const COMMANDS: &[Command] = &[
Command {
name: "cast",
cmd: &cast::cmd,
run: &cast::run,
},
Command {
name: "server",
cmd: &server::cmd,
run: &server::run,
},
Command {
name: "watch",
cmd: &watch::cmd,
run: &watch::run,
},
];
pub fn parse<'a>() -> Result<clap::ArgMatches<'a>> {
let mut app =
clap::App::new(crate::util::program_name().context(FindProgramName)?)
.about("Broadcast your terminal for other people to watch")
.author(clap::crate_authors!())
.version(clap::crate_version!())
.setting(clap::AppSettings::SubcommandRequired);
for cmd in COMMANDS {
let subcommand = clap::SubCommand::with_name(cmd.name);
app = app.subcommand((cmd.cmd)(subcommand));
}
app.get_matches_safe().context(Parse)
}
pub fn run(matches: clap::ArgMatches<'_>) -> Result<()> {
for cmd in COMMANDS {
if let Some(submatches) = matches.subcommand_matches(cmd.name) {
return (cmd.run)(&submatches);
}
}
unreachable!()
}
|
