nushell/src/main.rs

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#![feature(crate_visibility_modifier)]
#![feature(in_band_lifetimes)]
#![feature(async_await)]
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#![feature(try_trait)]
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#![feature(bind_by_move_pattern_guards)]
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mod cli;
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mod commands;
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mod context;
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mod env;
mod errors;
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mod evaluate;
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mod format;
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mod git;
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mod object;
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mod parser;
mod prelude;
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mod shell;
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mod stream;
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mod tests;
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use clap::{App, Arg};
use log::LevelFilter;
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use std::error::Error;
fn main() -> Result<(), Box<Error>> {
let matches = App::new("nu shell")
.version("0.5")
.arg(
Arg::with_name("loglevel")
.short("l")
.long("loglevel")
.value_name("LEVEL")
.possible_values(&["error", "warn", "info", "debug", "trace"])
.takes_value(true),
)
.arg(
Arg::with_name("develop")
.long("develop")
.multiple(true)
.takes_value(true),
)
.get_matches();
let loglevel = match matches.value_of("loglevel") {
None => LevelFilter::Warn,
Some("error") => LevelFilter::Error,
Some("warn") => LevelFilter::Warn,
Some("info") => LevelFilter::Info,
Some("debug") => LevelFilter::Debug,
Some("trace") => LevelFilter::Trace,
_ => unreachable!(),
};
let mut builder = pretty_env_logger::formatted_builder();
if let Ok(s) = std::env::var("RUST_LOG") {
builder.parse_filters(&s);
}
builder.filter_module("nu", loglevel);
match matches.values_of("develop") {
None => {}
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Some(values) => {
for item in values {
println!("filtering {:?}", item);
builder.filter_module(&format!("nu::{}", item), LevelFilter::Trace);
}
}
}
builder.try_init()?;
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futures::executor::block_on(crate::cli::cli())?;
Ok(())
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}