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use clap::{CommandFactory, Parser, ValueEnum};
use clap_complete::{Generator, Shell, generate, generate_to};
use clap_complete_nushell::Nushell;
use eyre::Result;
// clap put nushell completions into a separate package due to the maintainers
// being a little less committed to support them.
// This means we have to do a tiny bit of legwork to combine these completions
// into one command.
#[derive(Debug, Clone, ValueEnum)]
#[value(rename_all = "lower")]
pub enum GenShell {
Bash,
Elvish,
Fish,
Nushell,
PowerShell,
Zsh,
}
impl Generator for GenShell {
fn file_name(&self, name: &str) -> String {
match self {
// clap_complete
Self::Bash => Shell::Bash.file_name(name),
Self::Elvish => Shell::Elvish.file_name(name),
Self::Fish => Shell::Fish.file_name(name),
Self::PowerShell => Shell::PowerShell.file_name(name),
Self::Zsh => Shell::Zsh.file_name(name),
// clap_complete_nushell
Self::Nushell => Nushell.file_name(name),
}
}
fn generate(&self, cmd: &clap::Command, buf: &mut dyn std::io::prelude::Write) {
match self {
// clap_complete
Self::Bash => Shell::Bash.generate(cmd, buf),
Self::Elvish => Shell::Elvish.generate(cmd, buf),
Self::Fish => Shell::Fish.generate(cmd, buf),
Self::PowerShell => Shell::PowerShell.generate(cmd, buf),
Self::Zsh => Shell::Zsh.generate(cmd, buf),
// clap_complete_nushell
Self::Nushell => Nushell.generate(cmd, buf),
}
}
}
#[derive(Debug, Parser)]
pub struct Cmd {
/// Set the shell for generating completions
#[arg(long, short)]
shell: GenShell,
/// Set the output directory
#[arg(long, short)]
out_dir: Option<String>,
}
impl Cmd {
pub fn run(self) -> Result<()> {
let Cmd { shell, out_dir } = self;
let mut cli = crate::Atuin::command();
match out_dir {
Some(out_dir) => {
generate_to(shell, &mut cli, env!("CARGO_PKG_NAME"), &out_dir)?;
}
None => {
generate(
shell,
&mut cli,
env!("CARGO_PKG_NAME"),
&mut std::io::stdout(),
);
}
}
Ok(())
}
}
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