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Cleanup/refactoring

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This commit is contained in:
Ian Manske 2024-07-05 17:49:09 -07:00
parent ebbac5aca0
commit 4d8f8aa075
1 changed files with 20 additions and 24 deletions
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44
crates/nu-protocol/src/engine/engine_state.rs
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@ -913,46 +913,42 @@ impl EngineState {
/// directory on the stack that have yet to be merged into the engine state.
pub fn cwd(&self, stack: Option<&Stack>) -> Result<AbsolutePathBuf, ShellError> {
// Helper function to create a simple generic error.
fn error(msg: &str, cwd: impl AsRef<nu_path::Path>) -> Result<AbsolutePathBuf, ShellError> {
Err(ShellError::GenericError {
fn error(msg: &str, cwd: impl AsRef<nu_path::Path>) -> ShellError {
ShellError::GenericError {
error: msg.into(),
msg: format!("$env.PWD = {}", cwd.as_ref().display()),
span: None,
help: Some("Use `cd` to reset $env.PWD into a good state".into()),
inner: vec![],
})
}
}
// Retrieve $env.PWD from the stack or the engine state.
let pwd = if let Some(stack) = stack {
stack.get_env_var(self, "PWD")
} else {
self.get_env_var("PWD").map(ToOwned::to_owned)
self.get_env_var("PWD").cloned()
};
if let Some(pwd) = pwd {
if let Value::String { val, .. } = pwd {
match AbsolutePathBuf::try_from(val) {
Ok(path) => {
// Technically, a root path counts as "having trailing slashes", but
// for the purpose of PWD, a root path is acceptable.
if path.parent().is_none() && nu_path::has_trailing_slash(path.as_ref()) {
error("$env.PWD contains trailing slashes", &path)
} else if !path.exists() {
error("$env.PWD points to a non-existent directory", &path)
} else if !path.is_dir() {
error("$env.PWD points to a non-directory", &path)
} else {
Ok(path)
}
}
Err(path) => error("$env.PWD is not an absolute path", path),
}
let pwd = pwd.ok_or_else(|| error("$env.PWD not found", ""))?;
if let Value::String { val, .. } = pwd {
let path = AbsolutePathBuf::try_from(val)
.map_err(|path| error("$env.PWD is not an absolute path", path))?;
// Technically, a root path counts as "having trailing slashes", but
// for the purpose of PWD, a root path is acceptable.
if path.parent().is_some() && nu_path::has_trailing_slash(path.as_ref()) {
Err(error("$env.PWD contains trailing slashes", &path))
} else if !path.exists() {
Err(error("$env.PWD points to a non-existent directory", &path))
} else if !path.is_dir() {
Err(error("$env.PWD points to a non-directory", &path))
} else {
error("$env.PWD is not a string", format!("{pwd:?}"))
Ok(path)
}
} else {
error("$env.PWD not found", "")
Err(error("$env.PWD is not a string", format!("{pwd:?}")))
}
}