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refactor(username): reformat code to match docs (#2517)

This commit is contained in:
Dario Vladović 2021-03-27 22:13:20 +01:00 committed by GitHub
parent 1336944ab7
commit 404b4f3d0c
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1 changed files with 49 additions and 41 deletions
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90
src/modules/username.rs
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@ -12,51 +12,60 @@ const USERNAME_ENV_VAR: &str = "USERNAME";
/// Creates a module with the current user's username
///
/// Will display the username if any of the following criteria are met:
/// - The current user isn't the same as the one that is logged in (`$LOGNAME` != `$USER`)
/// - The current user is root (UID = 0)
/// - The user is currently connected as an SSH session (`$SSH_CONNECTION`)
/// - The current user is root (UID = 0) [1]
/// - The current user isn't the same as the one that is logged in (`$LOGNAME` != `$USER`) [2]
/// - The user is currently connected as an SSH session (`$SSH_CONNECTION`) [3]
pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
let username = context.get_env(USERNAME_ENV_VAR)?;
let logname = context.get_env("LOGNAME");
let is_root = is_root_user();
let is_not_login = logname.is_some() && username != logname.unwrap();
let mut module = context.new_module("username");
let config: UsernameConfig = UsernameConfig::try_load(module.config);
if is_not_login || is_ssh_connection(&context) || is_root || config.show_always {
let parsed = StringFormatter::new(config.format).and_then(|formatter| {
formatter
.map_style(|variable| match variable {
"style" => {
let module_style = if is_root {
config.style_root
} else {
config.style_user
};
Some(Ok(module_style))
}
_ => None,
})
.map(|variable| match variable {
"user" => Some(Ok(&username)),
_ => None,
})
.parse(None)
});
module.set_segments(match parsed {
Ok(segments) => segments,
Err(error) => {
log::warn!("Error in module `username`:\n{}", error);
return None;
}
});
let is_root = is_root_user();
let show_username = config.show_always
|| is_root // [1]
|| !is_login_user(&context, &username) // [2]
|| is_ssh_session(&context); // [3]
Some(module)
} else {
None
if !show_username {
return None;
}
let parsed = StringFormatter::new(config.format).and_then(|formatter| {
formatter
.map_style(|variable| match variable {
"style" => {
let module_style = if is_root {
config.style_root
} else {
config.style_user
};
Some(Ok(module_style))
}
_ => None,
})
.map(|variable| match variable {
"user" => Some(Ok(&username)),
_ => None,
})
.parse(None)
});
module.set_segments(match parsed {
Ok(segments) => segments,
Err(error) => {
log::warn!("Error in module `username`:\n{}", error);
return None;
}
});
Some(module)
}
fn is_login_user(context: &Context, username: &str) -> bool {
context
.get_env("LOGNAME")
.map(|logname| logname == username)
.unwrap_or(true)
}
#[cfg(target_os = "windows")]
@ -66,13 +75,12 @@ fn is_root_user() -> bool {
#[cfg(not(target_os = "windows"))]
fn is_root_user() -> bool {
let user_uid = nix::unistd::geteuid();
user_uid == nix::unistd::ROOT
nix::unistd::geteuid() == nix::unistd::ROOT
}
fn is_ssh_connection(context: &Context) -> bool {
fn is_ssh_session(context: &Context) -> bool {
let ssh_env = ["SSH_CONNECTION", "SSH_CLIENT", "SSH_TTY"];
ssh_env.iter().any(|env| context.get_env(env).is_some())
ssh_env.iter().any(|env| context.get_env_os(env).is_some())
}
#[cfg(test)]