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use ansi_term::Color;
use std::process::Command;
use super::{Context, Module};
/// Creates a module with the current Node.js version
///
/// Will display the Node.js version if any of the following criteria are met:
/// - Current directory contains a `.js` file
/// - Current directory contains a `package.json` file
/// - Current directory contains a `node_modules` directory
pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
let is_js_project = context
.new_scan_dir()
.set_files(&["package.json"])
.set_extensions(&["js"])
.set_folders(&["node_modules"])
.scan();
if !is_js_project {
return None;
}
match get_node_version() {
Some(node_version) => {
const NODE_CHAR: &str = "⬢ ";
let mut module = context.new_module("nodejs");
let module_style = module
.config_value_style("style")
.unwrap_or_else(|| Color::Green.bold());
module.set_style(module_style);
let formatted_version = node_version.trim();
module.new_segment("symbol", NODE_CHAR);
module.new_segment("version", formatted_version);
Some(module)
}
None => None,
}
}
fn get_node_version() -> Option<String> {
match Command::new("node").arg("--version").output() {
Ok(output) => Some(String::from_utf8(output.stdout).unwrap()),
Err(_) => None,
}
}
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