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util.js
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util.js
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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { dirname, fromFileUrl, join, resolve, toFileUrl } from "@std/path";
import { wait } from "https://deno.land/x/[email protected]/mod.ts";
export { dirname, fromFileUrl, join, resolve, toFileUrl };
export { existsSync, walk } from "@std/fs";
export { TextLineStream } from "@std/streams/text-line-stream";
export { delay } from "@std/async/delay";
// [toolName] --version output
const versions = {
"dlint": "dlint 0.60.0",
};
const compressed = new Set(["ld64.lld", "rcodesign"]);
export const ROOT_PATH = dirname(dirname(fromFileUrl(import.meta.url)));
async function getFilesFromGit(baseDir, args) {
const { success, stdout } = await new Deno.Command("git", {
stderr: "inherit",
args,
}).output();
const output = new TextDecoder().decode(stdout);
if (!success) {
throw new Error("gitLsFiles failed");
}
const files = output
.split("\0")
.filter((line) => line.length > 0)
.map((filePath) => {
try {
return Deno.realPathSync(join(baseDir, filePath));
} catch {
return null;
}
})
.filter((filePath) => filePath !== null);
return files;
}
function gitLsFiles(baseDir, patterns) {
baseDir = Deno.realPathSync(baseDir);
const cmd = [
"-C",
baseDir,
"ls-files",
"-z",
"--exclude-standard",
"--cached",
"--modified",
"--others",
"--",
...patterns,
];
return getFilesFromGit(baseDir, cmd);
}
/** List all files staged for commit */
function gitStaged(baseDir, patterns) {
baseDir = Deno.realPathSync(baseDir);
const cmd = [
"-C",
baseDir,
"diff",
"--staged",
"--diff-filter=ACMR",
"--name-only",
"-z",
"--",
...patterns,
];
return getFilesFromGit(baseDir, cmd);
}
/**
* Recursively list all files in (a subdirectory of) a git worktree.
* * Optionally, glob patterns may be specified to e.g. only list files with a
* certain extension.
* * Untracked files are included, unless they're listed in .gitignore.
* * Directory names themselves are not listed (but the files inside are).
* * Submodules and their contents are ignored entirely.
* * This function fails if the query matches no files.
*
* If --staged argument was provided when program is run
* only staged sources will be returned.
*/
export async function getSources(baseDir, patterns) {
const stagedOnly = Deno.args.includes("--staged");
if (stagedOnly) {
return await gitStaged(baseDir, patterns);
} else {
return await gitLsFiles(baseDir, patterns);
}
}
export function buildMode() {
if (Deno.args.includes("--release")) {
return "release";
}
return "debug";
}
export function buildPath() {
return join(ROOT_PATH, "target", buildMode());
}
const platformDirName = {
"windows": "win",
"darwin": "mac",
"linux": "linux64",
}[Deno.build.os];
const executableSuffix = Deno.build.os === "windows" ? ".exe" : "";
async function sanityCheckPrebuiltFile(toolPath) {
const stat = await Deno.stat(toolPath);
if (stat.size < PREBUILT_MINIMUM_SIZE) {
throw new Error(
`File size ${stat.size} is less than expected minimum file size ${PREBUILT_MINIMUM_SIZE}`,
);
}
const file = await Deno.open(toolPath, { read: true });
const buffer = new Uint8Array(1024);
let n = 0;
while (n < 1024) {
n += await file.read(buffer.subarray(n));
}
// Mac: OK
if (buffer[0] == 0xcf && buffer[1] == 0xfa) {
return;
}
// Windows OK
if (buffer[0] == "M".charCodeAt(0) && buffer[1] == "Z".charCodeAt(0)) {
return;
}
// Linux OK
if (
buffer[0] == 0x7f && buffer[1] == "E".charCodeAt(0) &&
buffer[2] == "L".charCodeAt(0) && buffer[3] == "F".charCodeAt(0)
) {
return;
}
throw new Error(`Invalid executable (header was ${buffer.subarray(0, 16)}`);
}
export async function getPrebuilt(toolName) {
const toolPath = getPrebuiltToolPath(toolName);
try {
await sanityCheckPrebuiltFile(toolPath);
const versionOk = await verifyVersion(toolName, toolPath);
if (!versionOk) {
throw new Error("Version mismatch");
}
} catch {
await downloadPrebuilt(toolName);
}
return toolPath;
}
const PREBUILT_PATH = join(ROOT_PATH, "third_party", "prebuilt");
const PREBUILT_TOOL_DIR = join(PREBUILT_PATH, platformDirName);
const PREBUILT_MINIMUM_SIZE = 16 * 1024;
const DOWNLOAD_TASKS = {};
export function getPrebuiltToolPath(toolName) {
return join(PREBUILT_TOOL_DIR, toolName + executableSuffix);
}
const commitId = "b8aac22e0cd7c1c6557a56a813fe0c25486fafee";
const downloadUrl =
`https://raw.githubusercontent.com/denoland/deno_third_party/${commitId}/prebuilt/${platformDirName}`;
export async function downloadPrebuilt(toolName) {
// Ensure only one download per tool happens at a time
if (DOWNLOAD_TASKS[toolName]) {
return await DOWNLOAD_TASKS[toolName].promise;
}
const downloadDeferred = DOWNLOAD_TASKS[toolName] = Promise.withResolvers();
const spinner = wait({
text: "Downloading prebuilt tool: " + toolName,
interval: 1000,
}).start();
const toolPath = getPrebuiltToolPath(toolName);
const tempFile = `${toolPath}.temp`;
try {
await Deno.mkdir(PREBUILT_TOOL_DIR, { recursive: true });
let url = `${downloadUrl}/${toolName}${executableSuffix}`;
if (compressed.has(toolName)) {
url += ".gz";
}
const resp = await fetch(url);
if (!resp.ok) {
throw new Error(`Non-successful response from ${url}: ${resp.status}`);
}
const file = await Deno.open(tempFile, {
create: true,
write: true,
mode: 0o755,
});
if (compressed.has(toolName)) {
await resp.body.pipeThrough(new DecompressionStream("gzip")).pipeTo(
file.writable,
);
} else {
await resp.body.pipeTo(file.writable);
}
spinner.text = `Checking prebuilt tool: ${toolName}`;
await sanityCheckPrebuiltFile(tempFile);
if (!await verifyVersion(toolName, tempFile)) {
throw new Error(
"Didn't get the correct version of the tool after downloading.",
);
}
spinner.text = `Successfully downloaded: ${toolName}`;
try {
// necessary on Windows it seems
await Deno.remove(toolPath);
} catch {
// ignore
}
await Deno.rename(tempFile, toolPath);
} catch (e) {
spinner.fail();
downloadDeferred.reject(e);
throw e;
}
spinner.succeed();
downloadDeferred.resolve(null);
}
export async function verifyVersion(toolName, toolPath) {
const requiredVersion = versions[toolName];
if (!requiredVersion) {
return true;
}
try {
const cmd = new Deno.Command(toolPath, {
args: ["--version"],
stdout: "piped",
stderr: "inherit",
});
const output = await cmd.output();
const version = new TextDecoder().decode(output.stdout).trim();
return version == requiredVersion;
} catch (e) {
console.error(e);
return false;
}
}