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|
mod recommend;
mod sql;
mod sync;
use clap::{
app_from_crate, crate_authors, crate_description, crate_name,
crate_version,
};
use failure::bail;
const _DUMMY_DEPENDENCY: &str = include_str!("../Cargo.toml");
trait Command {
fn run(&self) -> failure::Fallible<()>;
}
pub fn run() -> failure::Fallible<()> {
get_command()?.run()
}
fn get_command() -> failure::Fallible<Box<Command>> {
let subcommands = vec![
sync::subcommand(),
sql::subcommand(),
recommend::subcommand(),
];
let mut app = app_from_crate!().subcommands(
subcommands
.into_iter()
.map(|s| s.setting(clap::AppSettings::DisableVersion)),
);
let matches = app.clone().get_matches();
let command: Box<Command> = match matches.subcommand() {
("sync", Some(matches)) => Box::new(sync::Command::new(matches)),
("sql", Some(matches)) => Box::new(sql::Command::new(matches)),
("recommend", Some(matches)) => {
Box::new(recommend::Command::new(matches)?)
}
(name, Some(_)) => bail!("unknown subcommand: {}", name),
(_, None) => {
let mut stderr = std::io::stderr();
app.write_long_help(&mut stderr)?;
eprintln!("");
bail!("no subcommand given")
}
};
Ok(command)
}
|
