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|
use super::{Context, Module, RootModuleConfig};
use crate::configs::lua::LuaConfig;
use crate::formatter::StringFormatter;
use crate::utils;
use regex::Regex;
const LUA_VERSION_PATERN: &str = "(?P<version>[\\d\\.]+[a-z\\-]*[1-9]*)[^\\s]*";
/// Creates a module with the current Lua version
///
/// Will display the Lua version if any of the following criteria are met:
/// - Current directory contains a `.lua-version` file
/// - Current directory contains a `lua` directory
/// - Current directory contains a file with the `.lua` extension
pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
let is_lua_project = context
.try_begin_scan()?
.set_files(&[".lua-version"])
.set_folders(&["lua"])
.set_extensions(&["lua"])
.is_match();
if !is_lua_project {
return None;
}
let mut module = context.new_module("lua");
let config = LuaConfig::try_load(module.config);
let parsed = StringFormatter::new(config.format).and_then(|formatter| {
formatter
.map_meta(|var, _| match var {
"symbol" => Some(config.symbol),
_ => None,
})
.map_style(|variable| match variable {
"style" => Some(Ok(config.style)),
_ => None,
})
.map(|variable| match variable {
"version" => {
let lua_version = format_lua_version(&get_lua_version(&config.lua_binary)?)?;
Some(Ok(lua_version))
}
_ => None,
})
.parse(None)
});
module.set_segments(match parsed {
Ok(segments) => segments,
Err(error) => {
log::warn!("Error in module `lua`:\n{}", error);
return None;
}
});
Some(module)
}
fn get_lua_version(lua_binary: &str) -> Option<String> {
match utils::exec_cmd(lua_binary, &["-v"]) {
Some(output) => {
if output.stdout.is_empty() {
Some(output.stderr)
} else {
Some(output.stdout)
}
}
None => None,
}
}
fn format_lua_version(lua_stdout: &str) -> Option<String> {
// lua -v output looks like this:
// Lua 5.4.0 Copyright (C) 1994-2020 Lua.org, PUC-Rio
// luajit -v output looks like this:
// LuaJIT 2.0.5 -- Copyright (C) 2005-2017 Mike Pall. http://luajit.org/
let re = Regex::new(LUA_VERSION_PATERN).ok()?;
let captures = re.captures(lua_stdout)?;
let version = &captures["version"];
Some(format!("v{}", version))
}
#[cfg(test)]
mod tests {
use super::*;
use crate::test::ModuleRenderer;
use ansi_term::Color;
use std::fs::{self, File};
use std::io;
#[test]
fn folder_without_lua_files() -> io::Result<()> {
let dir = tempfile::tempdir()?;
let actual = ModuleRenderer::new("lua").path(dir.path()).collect();
let expected = None;
assert_eq!(expected, actual);
dir.close()
}
#[test]
fn folder_with_lua_file() -> io::Result<()> {
let dir = tempfile::tempdir()?;
File::create(dir.path().join("main.lua"))?.sync_all()?;
let actual = ModuleRenderer::new("lua").path(dir.path()).collect();
let expected = Some(format!("via {}", Color::Blue.bold().paint("🌙 v5.4.0 ")));
assert_eq!(expected, actual);
dir.close()
}
#[test]
fn folder_with_lua_version() -> io::Result<()> {
let dir = tempfile::tempdir()?;
File::create(dir.path().join(".lua-version"))?.sync_all()?;
let actual = ModuleRenderer::new("lua").path(dir.path()).collect();
let expected = Some(format!("via {}", Color::Blue.bold().paint("🌙 v5.4.0 ")));
assert_eq!(expected, actual);
dir.close()
}
#[test]
fn folder_with_lua_folder() -> io::Result<()> {
let dir = tempfile::tempdir()?;
let lua_dir = dir.path().join("lua");
fs::create_dir_all(&lua_dir)?;
let actual = ModuleRenderer::new("lua").path(dir.path()).collect();
let expected = Some(format!("via {}", Color::Blue.bold().paint("🌙 v5.4.0 ")));
assert_eq!(expected, actual);
dir.close()
}
#[test]
fn lua_binary_is_luajit() -> io::Result<()> {
let dir = tempfile::tempdir()?;
File::create(dir.path().join("main.lua"))?.sync_all()?;
let config = toml::toml! {
[lua]
lua_binary = "luajit"
};
let actual = ModuleRenderer::new("lua")
.path(dir.path())
.config(config)
.collect();
let expected = Some(format!("via {}", Color::Blue.bold().paint("🌙 v2.0.5 ")));
assert_eq!(expected, actual);
dir.close()
}
#[test]
fn test_format_lua_version() {
let lua_input = "Lua 5.4.0 Copyright (C) 1994-2020 Lua.org, PUC-Rio";
assert_eq!(format_lua_version(lua_input), Some("v5.4.0".to_string()));
let luajit_input =
"LuaJIT 2.1.0-beta3 -- Copyright (C) 2005-2017 Mike Pall. http://luajit.org/";
assert_eq!(
format_lua_version(luajit_input),
Some("v2.1.0-beta3".to_string())
);
}
}
|
