116 lines
3.1 KiB
Rust
116 lines
3.1 KiB
Rust
use nu_engine::{current_dir, CallExt};
|
|
use nu_protocol::ast::Call;
|
|
use nu_protocol::engine::{Command, EngineState, Stack};
|
|
use nu_protocol::{Category, Example, PipelineData, ShellError, Signature, SyntaxShape, Value};
|
|
|
|
/// Source a file for environment variables.
|
|
#[derive(Clone)]
|
|
pub struct Exit;
|
|
|
|
impl Command for Exit {
|
|
fn name(&self) -> &str {
|
|
"exit"
|
|
}
|
|
|
|
fn signature(&self) -> Signature {
|
|
Signature::build("exit")
|
|
.optional(
|
|
"exit_code",
|
|
SyntaxShape::Int,
|
|
"Exit code to return immediately with",
|
|
)
|
|
.switch("now", "Exit out of the shell immediately", Some('n'))
|
|
.category(Category::Shells)
|
|
}
|
|
|
|
fn usage(&self) -> &str {
|
|
"Runs a script file in the current context."
|
|
}
|
|
|
|
fn run(
|
|
&self,
|
|
engine_state: &EngineState,
|
|
stack: &mut Stack,
|
|
call: &Call,
|
|
_input: PipelineData,
|
|
) -> Result<PipelineData, ShellError> {
|
|
let exit_code: Option<i64> = call.opt(engine_state, stack, 0)?;
|
|
|
|
if let Some(exit_code) = exit_code {
|
|
std::process::exit(exit_code as i32);
|
|
}
|
|
|
|
if call.has_flag("now") {
|
|
std::process::exit(0);
|
|
}
|
|
|
|
let cwd = current_dir(engine_state, stack)?;
|
|
let cwd = Value::String {
|
|
val: cwd.to_string_lossy().to_string(),
|
|
span: call.head,
|
|
};
|
|
|
|
let shells = stack.get_env_var(engine_state, "NUSHELL_SHELLS");
|
|
let mut shells = if let Some(v) = shells {
|
|
v.as_list()
|
|
.map(|x| x.to_vec())
|
|
.unwrap_or_else(|_| vec![cwd])
|
|
} else {
|
|
vec![cwd]
|
|
};
|
|
|
|
let current_shell = stack.get_env_var(engine_state, "NUSHELL_CURRENT_SHELL");
|
|
let mut current_shell = if let Some(v) = current_shell {
|
|
v.as_integer().unwrap_or_default() as usize
|
|
} else {
|
|
0
|
|
};
|
|
|
|
shells.remove(current_shell);
|
|
|
|
if current_shell == shells.len() && !shells.is_empty() {
|
|
current_shell -= 1;
|
|
}
|
|
|
|
if shells.is_empty() {
|
|
std::process::exit(0);
|
|
} else {
|
|
let new_path = shells[current_shell].clone();
|
|
|
|
stack.add_env_var(
|
|
"NUSHELL_SHELLS".into(),
|
|
Value::List {
|
|
vals: shells,
|
|
span: call.head,
|
|
},
|
|
);
|
|
stack.add_env_var(
|
|
"NUSHELL_CURRENT_SHELL".into(),
|
|
Value::Int {
|
|
val: current_shell as i64,
|
|
span: call.head,
|
|
},
|
|
);
|
|
|
|
stack.add_env_var("PWD".into(), new_path);
|
|
|
|
Ok(PipelineData::new(call.head))
|
|
}
|
|
}
|
|
|
|
fn examples(&self) -> Vec<Example> {
|
|
vec![
|
|
Example {
|
|
description: "Exit the current shell",
|
|
example: "exit",
|
|
result: None,
|
|
},
|
|
Example {
|
|
description: "Exit all shells (exiting Nu)",
|
|
example: "exit --now",
|
|
result: None,
|
|
},
|
|
]
|
|
}
|
|
}
|