105 lines
2.9 KiB
Rust
105 lines
2.9 KiB
Rust
use super::{Context, Module, ModuleConfig};
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use crate::configs::erlang::ErlangConfig;
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use crate::formatter::StringFormatter;
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use crate::formatter::VersionFormatter;
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/// Create a module with the current Erlang version
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pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
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let mut module = context.new_module("erlang");
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let config = ErlangConfig::try_load(module.config);
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let is_erlang_project = context
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.try_begin_scan()?
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.set_files(&config.detect_files)
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.set_extensions(&config.detect_extensions)
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.set_folders(&config.detect_folders)
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.is_match();
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if !is_erlang_project {
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return None;
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}
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let parsed = StringFormatter::new(config.format).and_then(|formatter| {
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formatter
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.map_meta(|variable, _| match variable {
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"symbol" => Some(config.symbol),
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_ => None,
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})
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.map_style(|variable| match variable {
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"style" => Some(Ok(config.style)),
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_ => None,
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})
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.map(|variable| match variable {
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"version" => {
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let erlang_version = get_erlang_version(context)?;
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VersionFormatter::format_module_version(
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module.get_name(),
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&erlang_version,
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config.version_format,
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)
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.map(Ok)
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}
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_ => None,
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})
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.parse(None, Some(context))
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});
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module.set_segments(match parsed {
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Ok(segments) => segments,
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Err(error) => {
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log::warn!("Error in module `erlang`:\n{}", error);
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return None;
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}
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});
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Some(module)
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}
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fn get_erlang_version(context: &Context) -> Option<String> {
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Some(context.exec_cmd(
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"erl",
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&[
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"-noshell",
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"-eval",
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"Fn=filename:join([code:root_dir(),\"releases\",erlang:system_info(otp_release),\"OTP_VERSION\"]),\
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{ok,Content}=file:read_file(Fn),\
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io:format(\"~s\",[Content]),\
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halt(0)."
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]
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)?.stdout.trim().to_string())
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}
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#[cfg(test)]
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mod tests {
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use crate::test::ModuleRenderer;
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use nu_ansi_term::Color;
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use std::fs::File;
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use std::io;
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#[test]
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fn test_without_config() -> io::Result<()> {
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let dir = tempfile::tempdir()?;
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let expected = None;
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let output = ModuleRenderer::new("erlang").path(dir.path()).collect();
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assert_eq!(output, expected);
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dir.close()
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}
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#[test]
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fn test_with_config() -> io::Result<()> {
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let dir = tempfile::tempdir()?;
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File::create(dir.path().join("rebar.config"))?.sync_all()?;
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let expected = Some(format!("via {}", Color::Red.bold().paint(" v22.1.3 ")));
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let output = ModuleRenderer::new("erlang").path(dir.path()).collect();
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assert_eq!(output, expected);
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dir.close()
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}
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}
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