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62 lines
1.8 KiB
Rust
62 lines
1.8 KiB
Rust
use ansi_term::Color;
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use std::process::Command;
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use super::{Context, Module};
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/// Creates a module with the current Ruby version
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///
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/// Will display the Ruby version if any of the following criteria are met:
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/// - Current directory contains a `.rb` file
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/// - Current directory contains a `Gemfile` file
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pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
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let is_rb_project = context
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.try_begin_scan()?
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.set_files(&["Gemfile"])
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.set_extensions(&["rb"])
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.is_match();
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if !is_rb_project {
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return None;
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}
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match get_ruby_version() {
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Some(ruby_version) => {
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const RUBY_CHAR: &str = "💎 ";
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let mut module = context.new_module("ruby");
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let module_style = module
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.config_value_style("style")
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.unwrap_or_else(|| Color::Red.bold());
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module.set_style(module_style);
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let formatted_version = format_ruby_version(&ruby_version)?;
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module.new_segment("symbol", RUBY_CHAR);
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module.new_segment("version", &formatted_version);
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Some(module)
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}
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None => None,
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}
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}
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fn get_ruby_version() -> Option<String> {
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match Command::new("ruby").arg("-v").output() {
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Ok(output) => Some(String::from_utf8(output.stdout).unwrap()),
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Err(_) => None,
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}
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}
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fn format_ruby_version(ruby_version: &str) -> Option<String> {
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let version = ruby_version
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// split into ["ruby", "2.6.0p0", "linux/amd64"]
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.split_whitespace()
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// return "2.6.0p0"
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.nth(1)?
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.get(0..5)?;
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let mut formatted_version = String::with_capacity(version.len() + 1);
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formatted_version.push('v');
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formatted_version.push_str(version);
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Some(formatted_version)
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}
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