104 lines
2.7 KiB
Rust
104 lines
2.7 KiB
Rust
use plugin::prelude::*;
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use serde::Deserialize;
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use std::fs;
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use std::path::PathBuf;
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#[import]
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fn command(string: &str) -> Option<Vec<u8>>;
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const BIN_PATH: &'static str =
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"node_modules/vscode-json-languageserver/bin/vscode-json-languageserver";
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#[export]
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pub fn name() -> &'static str {
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"vscode-json-languageserver"
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}
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#[export]
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pub fn server_args() -> Vec<String> {
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vec!["--stdio".into()]
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}
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#[export]
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pub fn fetch_latest_server_version() -> Option<String> {
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#[derive(Deserialize)]
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struct NpmInfo {
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versions: Vec<String>,
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}
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let output =
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command("npm info vscode-json-languageserver --json").expect("could not run command");
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let output = String::from_utf8(output).unwrap();
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let mut info: NpmInfo = serde_json::from_str(&output).ok()?;
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info.versions.pop()
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}
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#[export]
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pub fn fetch_server_binary(container_dir: PathBuf, version: String) -> Result<PathBuf, String> {
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let version_dir = container_dir.join(version.as_str());
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fs::create_dir_all(&version_dir)
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.map_err(|_| "failed to create version directory".to_string())?;
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let binary_path = version_dir.join(BIN_PATH);
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if fs::metadata(&binary_path).is_err() {
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let output = command(&format!(
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"npm install vscode-json-languageserver@{}",
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version
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));
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let output = output.map(String::from_utf8);
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if output.is_none() {
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return Err("failed to install vscode-json-languageserver".to_string());
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}
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if let Some(mut entries) = fs::read_dir(&container_dir).ok() {
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while let Some(entry) = entries.next() {
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if let Some(entry) = entry.ok() {
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let entry_path = entry.path();
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if entry_path.as_path() != version_dir {
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fs::remove_dir_all(&entry_path).ok();
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}
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}
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}
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}
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}
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Ok(binary_path)
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}
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#[export]
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pub fn cached_server_binary(container_dir: PathBuf) -> Option<PathBuf> {
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let mut last_version_dir = None;
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let mut entries = fs::read_dir(&container_dir).ok()?;
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while let Some(entry) = entries.next() {
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let entry = entry.ok()?;
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if entry.file_type().ok()?.is_dir() {
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last_version_dir = Some(entry.path());
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}
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}
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let last_version_dir = last_version_dir?;
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let bin_path = last_version_dir.join(BIN_PATH);
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if bin_path.exists() {
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Some(bin_path)
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} else {
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println!("no binary found");
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None
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}
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}
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#[export]
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pub fn initialization_options() -> Option<String> {
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Some("{ \"provideFormatter\": true }".to_string())
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}
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#[export]
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pub fn id_for_language(name: String) -> Option<String> {
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if name == "JSON" {
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Some("jsonc".into())
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} else {
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None
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}
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}
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