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helix/xtask/src/helpers.rs

45 lines
1.4 KiB
Rust

use std::path::{Path, PathBuf};
use crate::path;
use helix_core::syntax::Configuration as LangConfig;
use helix_term::health::TsFeature;
/// Get the list of languages that support a particular tree-sitter
/// based feature.
pub fn ts_lang_support(feat: TsFeature) -> Vec<String> {
let queries_dir = path::ts_queries();
find_files(&queries_dir, feat.runtime_filename())
.iter()
.map(|f| {
// .../helix/runtime/queries/python/highlights.scm
let tail = f.strip_prefix(&queries_dir).unwrap(); // python/highlights.scm
let lang = tail.components().next().unwrap(); // python
lang.as_os_str().to_string_lossy().to_string()
})
.collect()
}
// naive implementation, but suffices for our needs
pub fn find_files(dir: &Path, filename: &str) -> Vec<PathBuf> {
std::fs::read_dir(dir)
.unwrap()
.filter_map(|entry| {
let path = entry.ok()?.path();
if path.is_dir() {
Some(find_files(&path, filename))
} else if path.file_name()?.to_string_lossy() == filename {
Some(vec![path])
} else {
None
}
})
.flatten()
.collect()
}
pub fn lang_config() -> LangConfig {
let bytes = std::fs::read(path::lang_config()).unwrap();
toml::from_slice(&bytes).unwrap()
}