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use super::{Context, Module, RootModuleConfig};
use crate::configs::v::VLangConfig;
use crate::formatter::StringFormatter;
/// Creates a module with the current V version
pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
let mut module = context.new_module("vlang");
let config = VLangConfig::try_load(module.config);
let is_v_project = context
.try_begin_scan()?
.set_extensions(&config.detect_extensions)
.is_match();
if !is_v_project {
return None;
}
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" => context
.exec_cmd("v", &["version"])
.and_then(|output| parse_v_version(output.stdout.trim()))
.map(Ok),
_ => None,
})
.parse(None)
});
module.set_segments(match parsed {
Ok(segments) => segments,
Err(error) => {
log::warn!("Error in module `vlang`:\n{}", error);
return None;
}
});
Some(module)
}
fn parse_v_version(v_version: &str) -> Option<String> {
let version = v_version
// split into ["V", "0.2", "30c0659"]
.split_whitespace()
// return "0.2"
.nth(1)?;
Some(format!("v{}", version))
}
#[cfg(test)]
mod tests {
use super::parse_v_version;
use crate::test::ModuleRenderer;
use ansi_term::Color;
use std::fs::File;
use std::io;
#[test]
fn test_parse_v_version() {
const OUTPUT: &str = "V 0.2 30c0659\n";
assert_eq!(parse_v_version(OUTPUT.trim()), Some("v0.2".to_string()))
}
#[test]
fn folder_without_v_files() -> io::Result<()> {
let dir = tempfile::tempdir()?;
let actual = ModuleRenderer::new("vlang").path(dir.path()).collect();
let expected = None;
assert_eq!(expected, actual);
dir.close()
}
#[test]
fn folder_with_v_files() -> io::Result<()> {
let dir = tempfile::tempdir()?;
File::create(dir.path().join("hello.v"))?.sync_all()?;
let actual = ModuleRenderer::new("vlang").path(dir.path()).collect();
let expected = Some(format!("via {}", Color::Blue.bold().paint("V v0.2 ")));
assert_eq!(expected, actual);
dir.close()
}
}
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