Gzip artifacts

Co-authored-by: bjorn3 <bjorn3@users.noreply.github.com>

Override miniz_oxide to build it with optimizations

Building this crate with optimizations decreases the gzipping
part of `cargo xtask dist` from `30-40s` down to `3s`,
the overhead for `rustc` to apply optimizations is miserable on this background

2 files changed, 17 insertions, 16 deletions

diff --git a/editors/code/src/main.ts b/editors/code/src/main.ts
index eda95ae5c43..bd99d696ad8 100644
--- a/editors/code/src/main.ts
+++ b/editors/code/src/main.ts
@@ -274,13 +274,13 @@ async function getServer(config: Config, state: PersistentState): Promise<string
     };
     if (config.package.releaseTag === null) return "rust-analyzer";
 
-    let binaryName: string | undefined = undefined;
+    let platform: string | undefined;
     if (process.arch === "x64" || process.arch === "ia32") {
-        if (process.platform === "linux") binaryName = "rust-analyzer-linux";
-        if (process.platform === "darwin") binaryName = "rust-analyzer-mac";
-        if (process.platform === "win32") binaryName = "rust-analyzer-windows.exe";
+        if (process.platform === "linux") platform = "linux";
+        if (process.platform === "darwin") platform = "mac";
+        if (process.platform === "win32") platform = "windows";
     }
-    if (binaryName === undefined) {
+    if (platform === undefined) {
         vscode.window.showErrorMessage(
             "Unfortunately we don't ship binaries for your platform yet. " +
             "You need to manually clone rust-analyzer repository and " +
@@ -291,8 +291,8 @@ async function getServer(config: Config, state: PersistentState): Promise<string
         );
         return undefined;
     }
-
-    const dest = path.join(config.globalStoragePath, binaryName);
+    const ext = platform === "windows" ? ".exe" : "";
+    const dest = path.join(config.globalStoragePath, `rust-analyzer-${platform}${ext}`);
     const exists = await fs.stat(dest).then(() => true, () => false);
     if (!exists) {
         await state.updateServerVersion(undefined);
@@ -309,7 +309,7 @@ async function getServer(config: Config, state: PersistentState): Promise<string
     }
 
     const release = await fetchRelease(config.package.releaseTag);
-    const artifact = release.assets.find(artifact => artifact.name === binaryName);
+    const artifact = release.assets.find(artifact => artifact.name === `rust-analyzer-${platform}.gz`);
     assert(!!artifact, `Bad release: ${JSON.stringify(release)}`);
 
     // Unlinking the exe file before moving new one on its place should prevent ETXTBSY error.
@@ -321,6 +321,7 @@ async function getServer(config: Config, state: PersistentState): Promise<string
         url: artifact.browser_download_url,
         dest,
         progressTitle: "Downloading rust-analyzer server",
+        gunzip: true,
         mode: 0o755
     });
 
diff --git a/editors/code/src/net.ts b/editors/code/src/net.ts
index 86609288262..53c9e91cd17 100644
--- a/editors/code/src/net.ts
+++ b/editors/code/src/net.ts
@@ -3,6 +3,7 @@ import * as vscode from "vscode";
 import * as stream from "stream";
 import * as crypto from "crypto";
 import * as fs from "fs";
+import * as zlib from "zlib";
 import * as util from "util";
 import * as path from "path";
 import { log, assert } from "./util";
@@ -65,6 +66,7 @@ interface DownloadOpts {
     url: string;
     dest: string;
     mode?: number;
+    gunzip?: boolean;
 }
 
 export async function download(opts: DownloadOpts) {
@@ -82,7 +84,7 @@ export async function download(opts: DownloadOpts) {
         },
         async (progress, _cancellationToken) => {
             let lastPercentage = 0;
-            await downloadFile(opts.url, tempFile, opts.mode, (readBytes, totalBytes) => {
+            await downloadFile(opts.url, tempFile, opts.mode, !!opts.gunzip, (readBytes, totalBytes) => {
                 const newPercentage = (readBytes / totalBytes) * 100;
                 progress.report({
                     message: newPercentage.toFixed(0) + "%",
@@ -97,16 +99,11 @@ export async function download(opts: DownloadOpts) {
     await fs.promises.rename(tempFile, opts.dest);
 }
 
-/**
- * Downloads file from `url` and stores it at `destFilePath` with `mode` (unix permissions).
- * `onProgress` callback is called on recieveing each chunk of bytes
- * to track the progress of downloading, it gets the already read and total
- * amount of bytes to read as its parameters.
- */
 async function downloadFile(
     url: string,
     destFilePath: fs.PathLike,
     mode: number | undefined,
+    gunzip: boolean,
     onProgress: (readBytes: number, totalBytes: number) => void
 ): Promise<void> {
     const res = await fetch(url);
@@ -130,7 +127,10 @@ async function downloadFile(
     });
 
     const destFileStream = fs.createWriteStream(destFilePath, { mode });
-    await pipeline(res.body, destFileStream);
+    const srcStream = gunzip ? res.body.pipe(zlib.createGunzip()) : res.body;
+
+    await pipeline(srcStream, destFileStream);
+
     await new Promise<void>(resolve => {
         destFileStream.on("close", resolve);
         destFileStream.destroy();