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|
//! Example to test arguments with different ValueHint values.
//!
//! Usage with zsh:
//! ```sh
//! cargo run --example value_hints -- --generate=zsh > /usr/local/share/zsh/site-functions/_value_hints
//! compinit
//! ./target/debug/examples/value_hints --<TAB>
//! ```
//! fish:
//! ```sh
//! cargo run --example value_hints -- --generate=fish > value_hints.fish
//! . ./value_hints.fish
//! ./target/debug/examples/value_hints --<TAB>
//! ```
use clap::{value_parser, Arg, Command, ValueHint};
use clap_complete::{generate, Generator, Shell};
use std::io;
fn build_cli() -> Command {
let value_hint_command = Command::new("value-hint")
.visible_alias("hint")
.arg(
Arg::new("unknown")
.long("unknown")
.value_hint(ValueHint::Unknown),
)
.arg(Arg::new("other").long("other").value_hint(ValueHint::Other))
.arg(
Arg::new("path")
.long("path")
.short('p')
.value_hint(ValueHint::AnyPath),
)
.arg(
Arg::new("file")
.long("file")
.short('f')
.value_hint(ValueHint::FilePath),
)
.arg(
Arg::new("dir")
.long("dir")
.short('d')
.value_hint(ValueHint::DirPath),
)
.arg(
Arg::new("exe")
.long("exe")
.short('e')
.value_hint(ValueHint::ExecutablePath),
)
.arg(
Arg::new("cmd_name")
.long("cmd-name")
.value_hint(ValueHint::CommandName),
)
.arg(
Arg::new("cmd")
.long("cmd")
.short('c')
.value_hint(ValueHint::CommandString),
)
.arg(
Arg::new("command_with_args")
.num_args(1..)
// AppSettings::TrailingVarArg is required to use ValueHint::CommandWithArguments
.trailing_var_arg(true)
.value_hint(ValueHint::CommandWithArguments),
)
.arg(
Arg::new("user")
.short('u')
.long("user")
.value_hint(ValueHint::Username),
)
.arg(
Arg::new("host")
.long("host")
.value_hint(ValueHint::Hostname),
)
.arg(Arg::new("url").long("url").value_hint(ValueHint::Url))
.arg(
Arg::new("email")
.long("email")
.value_hint(ValueHint::EmailAddress),
);
Command::new("completion")
.arg(
Arg::new("generator")
.long("generate")
.value_parser(value_parser!(Shell)),
)
.subcommand(value_hint_command)
}
fn print_completions<G: Generator>(gen: G, cmd: &mut Command) {
generate(gen, cmd, cmd.get_name().to_string(), &mut io::stdout());
}
fn main() {
let matches = build_cli().get_matches();
if let Some(generator) = matches.get_one::<Shell>("generator") {
let mut cmd = build_cli();
eprintln!("Generating completion file for {}...", generator);
print_completions(*generator, &mut cmd);
}
}
|
