use std::fs; use zed_extension_api::{self as zed, LanguageServerId, Result}; pub struct ErlangLanguagePlatform { cached_binary_path: Option<String>,} impl ErlangLanguagePlatform { pub const LANGUAGE_SERVER_ID: &'static str = "elp"; pub fn new() -> Self { Self { cached_binary_path: None, } } pub fn language_server_command( &mut self, language_server_id: &LanguageServerId, worktree: &zed::Worktree, ) -> Result<zed::Command> { Ok(zed::Command { command: self.language_server_binary_path(language_server_id, worktree)?, args: vec!["server".to_string()], env: Default::default(), }) } fn language_server_binary_path( &mut self, language_server_id: &LanguageServerId, worktree: &zed::Worktree, ) -> Result<String> { if let Some(path) = worktree.which("elp") { return Ok(path); } if let Some(path) = &self.cached_binary_path { if fs::metadata(path).map_or(false, |stat| stat.is_file()) { return Ok(path.clone()); } } zed::set_language_server_installation_status( language_server_id, &zed::LanguageServerInstallationStatus::CheckingForUpdate, ); let release = zed::latest_github_release( "WhatsApp/erlang-language-platform", zed::GithubReleaseOptions { require_assets: true, pre_release: false, }, )?; let (platform, arch) = zed::current_platform(); let asset_name = { let otp_version = "26.2"; let (os, os_target) = match platform { zed::Os::Mac => ("macos", "apple-darwin"), zed::Os::Linux => ("linux", "unknown-linux-gnu"), zed::Os::Windows => return Err(format!("unsupported platform: {platform:?}")), }; format!( "elp-{os}-{arch}-{os_target}-otp-{otp_version}.tar.gz", arch = match arch { zed::Architecture::Aarch64 => "aarch64", zed::Architecture::X8664 => "x86_64", zed::Architecture::X86 => return Err(format!("unsupported architecture: {arch:?}")), }, ) }; let asset = release .assets .iter() .find(|asset| asset.name == asset_name) .ok_or_else(|| format!("no asset found matching {:?}", asset_name))?; let version_dir = format!("elp-{}", release.version); let binary_path = format!("{version_dir}/elp"); if !fs::metadata(&binary_path).map_or(false, |stat| stat.is_file()) { zed::set_language_server_installation_status( language_server_id, &zed::LanguageServerInstallationStatus::Downloading, ); zed::download_file( &asset.download_url, &version_dir, zed::DownloadedFileType::GzipTar, ) .map_err(|e| format!("failed to download file: {e}"))?; let entries = fs::read_dir(".").map_err(|e| format!("failed to list working directory {e}"))?; for entry in entries { let entry = entry.map_err(|e| format!("failed to load directory entry {e}"))?; if entry.file_name().to_str() != Some(&version_dir) { fs::remove_dir_all(entry.path()).ok(); } } } self.cached_binary_path = Some(binary_path.clone()); Ok(binary_path) }}
use std::fs;
use zed_extension_api::{self as zed, LanguageServerId, Result};
pub struct ErlangLanguagePlatform {
cached_binary_path: Option<String>,
}
impl ErlangLanguagePlatform {
pub const LANGUAGE_SERVER_ID: &'static str = "elp";
pub fn new() -> Self {
Self {
cached_binary_path: None,
}
}
pub fn language_server_command(
&mut self,
language_server_id: &LanguageServerId,
worktree: &zed::Worktree,
) -> Result<zed::Command> {
Ok(zed::Command {
command: self.language_server_binary_path(language_server_id, worktree)?,
args: vec!["server".to_string()],
env: Default::default(),
})
}
fn language_server_binary_path(
&mut self,
language_server_id: &LanguageServerId,
worktree: &zed::Worktree,
) -> Result<String> {
if let Some(path) = worktree.which("elp") {
return Ok(path);
}
if let Some(path) = &self.cached_binary_path {
if fs::metadata(path).map_or(false, |stat| stat.is_file()) {
return Ok(path.clone());
}
}
zed::set_language_server_installation_status(
language_server_id,
&zed::LanguageServerInstallationStatus::CheckingForUpdate,
);
let release = zed::latest_github_release(
"WhatsApp/erlang-language-platform",
zed::GithubReleaseOptions {
require_assets: true,
pre_release: false,
},
)?;
let (platform, arch) = zed::current_platform();
let asset_name = {
let otp_version = "26.2";
let (os, os_target) = match platform {
zed::Os::Mac => ("macos", "apple-darwin"),
zed::Os::Linux => ("linux", "unknown-linux-gnu"),
zed::Os::Windows => return Err(format!("unsupported platform: {platform:?}")),
};
format!(
"elp-{os}-{arch}-{os_target}-otp-{otp_version}.tar.gz",
arch = match arch {
zed::Architecture::Aarch64 => "aarch64",
zed::Architecture::X8664 => "x86_64",
zed::Architecture::X86 =>
return Err(format!("unsupported architecture: {arch:?}")),
},
)
};
let asset = release
.assets
.iter()
.find(|asset| asset.name == asset_name)
.ok_or_else(|| format!("no asset found matching {:?}", asset_name))?;
let version_dir = format!("elp-{}", release.version);
let binary_path = format!("{version_dir}/elp");
if !fs::metadata(&binary_path).map_or(false, |stat| stat.is_file()) {
zed::set_language_server_installation_status(
language_server_id,
&zed::LanguageServerInstallationStatus::Downloading,
);
zed::download_file(
&asset.download_url,
&version_dir,
zed::DownloadedFileType::GzipTar,
)
.map_err(|e| format!("failed to download file: {e}"))?;
let entries =
fs::read_dir(".").map_err(|e| format!("failed to list working directory {e}"))?;
for entry in entries {
let entry = entry.map_err(|e| format!("failed to load directory entry {e}"))?;
if entry.file_name().to_str() != Some(&version_dir) {
fs::remove_dir_all(entry.path()).ok();
}
}
}
self.cached_binary_path = Some(binary_path.clone());
Ok(binary_path)
}
}