70 lines
1.9 KiB
Rust
70 lines
1.9 KiB
Rust
use super::{Context, Module, ModuleConfig};
|
|
|
|
use crate::configs::guix_shell::GuixShellConfig;
|
|
use crate::formatter::StringFormatter;
|
|
|
|
/// Creates a module showing if inside a guix-shell
|
|
///
|
|
/// The module will use the `$GUIX_ENVIRONMENT` environment variable to determine if it's
|
|
/// inside a guix-shell and the name of it.
|
|
pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
|
|
let mut module = context.new_module("guix_shell");
|
|
let config: GuixShellConfig = GuixShellConfig::try_load(module.config);
|
|
|
|
let is_guix_shell = context.get_env("GUIX_ENVIRONMENT").is_some();
|
|
|
|
if !is_guix_shell {
|
|
return None;
|
|
};
|
|
|
|
let parsed = StringFormatter::new(config.format).and_then(|formatter| {
|
|
formatter
|
|
.map_meta(|variable, _| match variable {
|
|
"symbol" => Some(config.symbol),
|
|
_ => None,
|
|
})
|
|
.map_style(|variable| match variable {
|
|
"style" => Some(Ok(config.style)),
|
|
_ => None,
|
|
})
|
|
.parse(None, Some(context))
|
|
});
|
|
|
|
module.set_segments(match parsed {
|
|
Ok(segments) => segments,
|
|
Err(error) => {
|
|
log::warn!("Error in module `guix_shell`:\n{}", error);
|
|
return None;
|
|
}
|
|
});
|
|
|
|
Some(module)
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use crate::test::ModuleRenderer;
|
|
use nu_ansi_term::Color;
|
|
|
|
#[test]
|
|
fn no_env_variables() {
|
|
let actual = ModuleRenderer::new("guix_shell").collect();
|
|
let expected = None;
|
|
|
|
assert_eq!(expected, actual);
|
|
}
|
|
|
|
#[test]
|
|
fn env_variables() {
|
|
let actual = ModuleRenderer::new("guix_shell")
|
|
.env(
|
|
"GUIX_ENVIRONMENT",
|
|
"/gnu/store/7vmfs4khf4fllsh83kqkxssbw3437qsh-profile",
|
|
)
|
|
.collect();
|
|
let expected = Some(format!("via {} ", Color::Yellow.bold().paint("🐃 ")));
|
|
|
|
assert_eq!(expected, actual);
|
|
}
|
|
}
|