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// Copyright 2016 Joe Wilm, The Alacritty Project Contributors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
extern crate log;
use clap::{Arg, App};
use index::{Line, Column};
use config::{Dimensions, Shell};
const DEFAULT_TITLE: &'static str = "Alacritty";
/// Options specified on the command line
pub struct Options {
pub print_events: bool,
pub ref_test: bool,
pub dimensions: Option<Dimensions>,
pub title: String,
pub log_level: log::LogLevelFilter,
pub shell: Option<Shell<'static>>,
}
impl Default for Options {
fn default() -> Options {
Options {
print_events: false,
ref_test: false,
dimensions: None,
title: DEFAULT_TITLE.to_owned(),
log_level: log::LogLevelFilter::Warn,
shell: None,
}
}
}
impl Options {
/// Build `Options` from command line arguments
pub fn load() -> Options {
let mut options = Options::default();
let matches = App::new(crate_name!())
.version(crate_version!())
.author(crate_authors!("\n"))
.about(crate_description!())
.arg(Arg::with_name("ref-test")
.long("ref-test")
.help("Generates ref test"))
.arg(Arg::with_name("print-events")
.long("print-events"))
.arg(Arg::with_name("dimensions")
.long("dimensions")
.short("d")
.value_names(&["columns", "lines"])
.help("Defines the window dimensions [default: 80x24]"))
.arg(Arg::with_name("title")
.long("title")
.short("t")
.default_value(DEFAULT_TITLE)
.help("Defines the window title"))
.arg(Arg::with_name("q")
.short("q")
.multiple(true)
.conflicts_with("v")
.help("Reduces the level of verbosity (the min level is -qq)"))
.arg(Arg::with_name("v")
.short("v")
.multiple(true)
.conflicts_with("q")
.help("Increases the level of verbosity (the max level is -vvv)"))
.arg(Arg::with_name("command")
.short("e")
.multiple(true)
.takes_value(true)
.min_values(1)
.allow_hyphen_values(true)
.help("Command and args to execute (must be last argument)"))
.get_matches();
if matches.is_present("ref-test") {
options.ref_test = true;
}
if matches.is_present("print-events") {
options.print_events = true;
}
if let Some(mut dimensions) = matches.values_of("dimensions") {
let width = dimensions.next().map(|w| w.parse().map(|w| Column(w)));
let height = dimensions.next().map(|h| h.parse().map(|h| Line(h)));
if let (Some(Ok(width)), Some(Ok(height))) = (width, height) {
options.dimensions = Some(Dimensions::new(width, height));
}
}
if let Some(title) = matches.value_of("title") {
options.title = title.to_owned();
}
match matches.occurrences_of("q") {
0 => {},
1 => options.log_level = log::LogLevelFilter::Error,
2 | _ => options.log_level = log::LogLevelFilter::Off
}
match matches.occurrences_of("v") {
0 => {},
1 => options.log_level = log::LogLevelFilter::Info,
2 => options.log_level = log::LogLevelFilter::Debug,
3 | _ => options.log_level = log::LogLevelFilter::Trace
}
if let Some(mut args) = matches.values_of("command") {
// The following unwrap is guaranteed to succeed.
// If 'command' exists it must also have a first item since
// Arg::min_values(1) is set.
let command = String::from(args.next().unwrap());
let args = args.map(String::from).collect();
options.shell = Some(Shell::new_with_args(command, args));
}
options
}
pub fn dimensions(&self) -> Option<Dimensions> {
self.dimensions
}
pub fn shell(&self) -> Option<&Shell> {
self.shell.as_ref()
}
}
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