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use clap::{App, AppSettings, Arg};
fn main() {
let matches = App::new("pacman")
.about("package manager utility")
.version("5.2.1")
.setting(AppSettings::SubcommandRequiredElseHelp)
.author("Pacman Development Team")
.subcommand(
App::new("query")
.short_flag('Q')
.long_flag("query")
.about("Query the package database.")
.arg(
Arg::new("search")
.short('s')
.long("search")
.help("search locally installed packages for matching strings")
.conflicts_with("info")
.takes_value(true)
.multiple_values(true),
)
.arg(
Arg::new("info")
.long("info")
.short('i')
.conflicts_with("search")
.help("view package information")
.takes_value(true)
.multiple_values(true),
),
)
.subcommand(
App::new("sync")
.short_flag('S')
.long_flag("sync")
.about("Synchronize packages.")
.arg(
Arg::new("search")
.short('s')
.long("search")
.conflicts_with("info")
.takes_value(true)
.multiple_values(true)
.help("search remote repositories for matching strings"),
)
.arg(
Arg::new("info")
.long("info")
.conflicts_with("search")
.short('i')
.help("view package information"),
)
.arg(
Arg::new("package")
.help("packages")
.required_unless_present("search")
.takes_value(true)
.multiple_values(true),
),
)
.get_matches();
match matches.subcommand() {
Some(("sync", sync_matches)) => {
if sync_matches.is_present("search") {
let packages: Vec<_> = sync_matches.values_of("search").unwrap().collect();
let values = packages.join(", ");
println!("Searching for {}...", values);
return;
}
let packages: Vec<_> = sync_matches.values_of("package").unwrap().collect();
let values = packages.join(", ");
if sync_matches.is_present("info") {
println!("Retrieving info for {}...", values);
} else {
println!("Installing {}...", values);
}
}
Some(("query", query_matches)) => {
if let Some(packages) = query_matches.values_of("info") {
let comma_sep = packages.collect::<Vec<_>>().join(", ");
println!("Retrieving info for {}...", comma_sep);
} else if let Some(queries) = query_matches.values_of("search") {
let comma_sep = queries.collect::<Vec<_>>().join(", ");
println!("Searching Locally for {}...", comma_sep);
} else {
println!("Displaying all locally installed packages...");
}
}
_ => unreachable!(),
}
}