feat: add Python and Java regex engines
This commit is contained in:
603
scripts/java-engine-pack.mjs
Normal file
603
scripts/java-engine-pack.mjs
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@@ -0,0 +1,603 @@
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import { spawn } from "node:child_process";
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import { createHash } from "node:crypto";
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import {
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access,
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constants as fsConstants,
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copyFile,
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lstat,
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mkdir,
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mkdtemp,
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readFile,
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readdir,
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realpath,
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rename,
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rm,
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stat,
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writeFile,
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} from "node:fs/promises";
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import { homedir } from "node:os";
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import path from "node:path";
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import { fileURLToPath, pathToFileURL } from "node:url";
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export const JAVA_LOCK = Object.freeze({
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bridgeAbi: 1,
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engineIdentity: "TeaVM java.util.regex 0.15.0",
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engineVersion: "0.15.0",
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sourceDateEpoch: 1_780_759_630,
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maximumPatternUtf16: 65_536,
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maximumSubjectBytes: 16_777_216,
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maximumReplacementUtf16: 65_536,
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maximumMatches: 10_000,
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maximumCaptureRows: 100_000,
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maximumCaptureGroups: 1_000,
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maximumOutputBytes: 67_108_864,
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source: Object.freeze({
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repository: "https://github.com/konsoletyper/teavm.git",
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tag: "0.15.0",
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commit: "ee91b03e616c4b45401cd11fb0cd7eb0daf6649b",
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tree: "1cdc5c332d5809828c8952f96d73f9e7504a0cec",
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license: "Apache-2.0",
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licenseSha256:
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"cfc7749b96f63bd31c3c42b5c471bf756814053e847c10f3eb003417bc523d30",
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noticeSha256:
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"6c2b3372a6beee7fbaad482248ac0f5ad2b099d92ff2a528c04261cc9c0636f4",
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}),
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toolchain: Object.freeze({
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mavenVersion: "3.9.15",
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javaVersion: "25.0.3",
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artifacts: Object.freeze([
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Object.freeze({
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coordinate: "org.teavm:teavm-classlib:0.15.0",
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relativePath:
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"org/teavm/teavm-classlib/0.15.0/teavm-classlib-0.15.0.jar",
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sha256:
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"7d805be4670a892a34c89d9d750a8afd65e2f8201b7b3a10343634ea19d1c410",
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}),
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Object.freeze({
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coordinate: "org.teavm:teavm-jso:0.15.0",
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relativePath: "org/teavm/teavm-jso/0.15.0/teavm-jso-0.15.0.jar",
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sha256:
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"58b337b93924106bf819c45890c7c231a0c740145afe77795f1e0f099f621d71",
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}),
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Object.freeze({
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coordinate: "org.teavm:teavm-maven-plugin:0.15.0",
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relativePath:
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"org/teavm/teavm-maven-plugin/0.15.0/teavm-maven-plugin-0.15.0.jar",
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sha256:
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"1133e16e45f1fd3cb93129fd96d142e1f5ef3608891d83b2273442d5446a3879",
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}),
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]),
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}),
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});
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const PACK_FILES = Object.freeze([
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"LICENSE.txt",
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"NOTICE.txt",
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"SHA256SUMS",
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"engine-metadata.json",
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"java-regex.mjs",
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]);
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const CHECKSUM_FILES = Object.freeze([
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"LICENSE.txt",
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"NOTICE.txt",
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"engine-metadata.json",
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"java-regex.mjs",
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]);
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const BRIDGE_SOURCE_FILES = Object.freeze([
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"engines/java/pom.xml",
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"engines/java/README.md",
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"engines/java/LICENSE-TeaVM.txt",
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"engines/java/NOTICE-TeaVM.txt",
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"engines/java/src/main/java/de/addideas/regextools/javaengine/RegexBridge.java",
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]);
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const EXPORTED_FUNCTIONS = Object.freeze([
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"bridgeAbiVersion",
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"engineIdentity",
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"execute",
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"replace",
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"selfTest",
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]);
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function sha256(data) {
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return createHash("sha256").update(data).digest("hex");
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}
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async function sha256File(file) {
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return sha256(await readFile(file));
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}
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async function assertRealDirectory(candidate, label) {
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const details = await lstat(candidate).catch(() => null);
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if (!details?.isDirectory() || details.isSymbolicLink()) {
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throw new Error(`${label} must be a real directory: ${candidate}`);
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}
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return realpath(candidate);
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}
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async function assertRegularFile(candidate, label) {
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const details = await lstat(candidate).catch(() => null);
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if (!details?.isFile() || details.isSymbolicLink()) {
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throw new Error(
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`${label} must be a regular, non-symlink file: ${candidate}`,
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);
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}
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return realpath(candidate);
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}
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async function resolveExecutable(name, environment = process.env) {
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for (const directory of (environment.PATH ?? "").split(path.delimiter)) {
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if (!directory) continue;
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const candidate = path.join(directory, name);
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try {
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await access(candidate, fsConstants.X_OK);
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if ((await stat(candidate)).isFile()) return realpath(candidate);
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} catch {
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// Continue through PATH.
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}
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}
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throw new Error(`${name} is required on PATH for the TeaVM Java build.`);
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}
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function commandLabel(command, arguments_) {
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return [command, ...arguments_]
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.map((part) =>
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/^[A-Za-z0-9_./:=,+-]+$/u.test(part) ? part : JSON.stringify(part),
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)
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.join(" ");
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}
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async function run(command, arguments_, options = {}) {
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const child = spawn(command, arguments_, {
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cwd: options.cwd,
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env: options.env,
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stdio: ["ignore", "pipe", "pipe"],
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});
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const stdout = [];
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const stderr = [];
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child.stdout.on("data", (chunk) => stdout.push(chunk));
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child.stderr.on("data", (chunk) => stderr.push(chunk));
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const result = await new Promise((resolve, reject) => {
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child.once("error", reject);
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child.once("close", (code, signal) => resolve({ code, signal }));
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});
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const output = Buffer.concat(stdout).toString("utf8");
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const errorOutput = Buffer.concat(stderr).toString("utf8");
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if (result.code !== 0) {
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const detail = [output, errorOutput].filter(Boolean).join("\n").trim();
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throw new Error(
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`${commandLabel(command, arguments_)} failed with ${
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result.signal ? `signal ${result.signal}` : `exit code ${result.code}`
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}${detail ? `:\n${detail}` : "."}`,
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);
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}
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return { stdout: output, stderr: errorOutput };
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}
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async function verifyToolchain() {
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const maven = await resolveExecutable("mvn");
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const java = await resolveExecutable("java");
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const mavenVersion = await run(maven, ["--version"]);
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const javaVersion = await run(java, ["-version"]);
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if (
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!mavenVersion.stdout.startsWith(
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`Apache Maven ${JAVA_LOCK.toolchain.mavenVersion} `,
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)
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) {
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throw new Error(
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`The Java pack requires Maven ${JAVA_LOCK.toolchain.mavenVersion}.`,
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);
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}
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const javaText = `${javaVersion.stdout}\n${javaVersion.stderr}`;
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if (
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!javaText.includes(`openjdk version "${JAVA_LOCK.toolchain.javaVersion}`)
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) {
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throw new Error(
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`The Java pack requires OpenJDK ${JAVA_LOCK.toolchain.javaVersion}.`,
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);
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}
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const repository = path.join(homedir(), ".m2", "repository");
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for (const artifact of JAVA_LOCK.toolchain.artifacts) {
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const file = await assertRegularFile(
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path.join(repository, artifact.relativePath),
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artifact.coordinate,
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);
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const actual = await sha256File(file);
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if (actual !== artifact.sha256) {
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throw new Error(
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`${artifact.coordinate} SHA-256 mismatch: expected ${artifact.sha256}, got ${actual}.`,
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);
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}
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}
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return { maven };
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}
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function cleanBuildEnvironment() {
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const environment = { ...process.env };
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for (const variable of [
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"CLASSPATH",
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"JAVA_TOOL_OPTIONS",
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"MAVEN_ARGS",
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"MAVEN_OPTS",
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"_JAVA_OPTIONS",
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]) {
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delete environment[variable];
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}
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environment.LANG = "C";
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environment.LC_ALL = "C";
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environment.SOURCE_DATE_EPOCH = String(JAVA_LOCK.sourceDateEpoch);
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environment.TZ = "UTC";
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return environment;
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}
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async function sourceFiles(root) {
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return Promise.all(
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BRIDGE_SOURCE_FILES.map(async (relativePath) => {
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const file = await assertRegularFile(
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path.join(root, relativePath),
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`Java bridge source ${relativePath}`,
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);
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const contents = await readFile(file);
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return {
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path: relativePath,
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sha256: sha256(contents),
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bytes: contents.byteLength,
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};
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}),
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);
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}
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async function fileMetadata(pack, name) {
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const contents = await readFile(path.join(pack, name));
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return { path: name, sha256: sha256(contents), bytes: contents.byteLength };
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}
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async function expectedMetadata(root, pack) {
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return {
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schemaVersion: 1,
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engine: "java",
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engineName: "TeaVM java.util.regex",
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engineVersion: JAVA_LOCK.engineVersion,
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semanticIdentity:
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"TeaVM 0.15.0 classlib java.util.regex; Apache Harmony-derived; not OpenJDK",
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status: "production-compatibility-runtime",
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bridge: {
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abiVersion: JAVA_LOCK.bridgeAbi,
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maximumPatternUtf16: JAVA_LOCK.maximumPatternUtf16,
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maximumSubjectBytes: JAVA_LOCK.maximumSubjectBytes,
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maximumReplacementUtf16: JAVA_LOCK.maximumReplacementUtf16,
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maximumMatches: JAVA_LOCK.maximumMatches,
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maximumCaptureRows: JAVA_LOCK.maximumCaptureRows,
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maximumCaptureGroups: JAVA_LOCK.maximumCaptureGroups,
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maximumOutputBytes: JAVA_LOCK.maximumOutputBytes,
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offsetUnit: "utf16",
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exports: [...EXPORTED_FUNCTIONS],
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sourceFiles: await sourceFiles(root),
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},
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source: {
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repository: JAVA_LOCK.source.repository,
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tag: JAVA_LOCK.source.tag,
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commitSha1: JAVA_LOCK.source.commit,
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treeSha1: JAVA_LOCK.source.tree,
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license: JAVA_LOCK.source.license,
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upstreamLicenseSha256: JAVA_LOCK.source.licenseSha256,
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upstreamNoticeSha256: JAVA_LOCK.source.noticeSha256,
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},
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toolchain: {
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mavenVersion: JAVA_LOCK.toolchain.mavenVersion,
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javaVersion: JAVA_LOCK.toolchain.javaVersion,
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teaVmArtifacts: JAVA_LOCK.toolchain.artifacts.map(
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({ coordinate, sha256: digest }) => ({
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coordinate,
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sha256: digest,
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}),
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),
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},
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configuration: {
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target: "JavaScript ES2015 module",
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minified: true,
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optimizationLevel: "ADVANCED",
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sourceMaps: false,
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filesystem: false,
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supportedApplicationFlags: ["g", "i", "d", "m", "s", "u", "x", "U"],
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unixLines: "d maps to TeaVM Pattern.UNIX_LINES.",
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unicodeCharacterClassCompatibility:
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"TeaVM 0.15.0 lacks OpenJDK UNICODE_CHARACTER_CLASS; U implies Unicode case folding only.",
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replacement:
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"TeaVM 0.15.0 Matcher appendReplacement/appendTail semantics: only single-digit $n references; ${name} is rejected; not OpenJDK Matcher parity.",
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},
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sourceDateEpoch: JAVA_LOCK.sourceDateEpoch,
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files: await Promise.all(
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["LICENSE.txt", "NOTICE.txt", "java-regex.mjs"].map((name) =>
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fileMetadata(pack, name),
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),
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),
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};
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}
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async function expectedChecksums(pack) {
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const lines = await Promise.all(
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CHECKSUM_FILES.map(
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async (name) => `${await sha256File(path.join(pack, name))} ${name}`,
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),
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);
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return `${lines.join("\n")}\n`;
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}
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function equalJson(left, right) {
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return JSON.stringify(left) === JSON.stringify(right);
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}
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function readField(payload, state) {
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const colon = payload.indexOf(":", state.cursor);
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if (colon < 0) throw new Error("Malformed Java smoke-test payload.");
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const length = Number.parseInt(payload.slice(state.cursor, colon), 10);
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if (!Number.isSafeInteger(length) || length < 0) {
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throw new Error("Malformed Java smoke-test field length.");
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}
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const start = colon + 1;
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const end = start + length;
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if (end > payload.length) {
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throw new Error("Truncated Java smoke-test payload.");
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}
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state.cursor = end;
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return payload.slice(start, end);
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}
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async function smokeJavaPack(pack) {
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const moduleFile = path.join(pack, "java-regex.mjs");
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const imported = await import(
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`${pathToFileURL(moduleFile).href}?verify=${await sha256File(moduleFile)}`
|
||||
);
|
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for (const name of EXPORTED_FUNCTIONS) {
|
||||
if (typeof imported[name] !== "function") {
|
||||
throw new Error(`The Java module is missing export ${name}.`);
|
||||
}
|
||||
}
|
||||
if (
|
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imported.bridgeAbiVersion() !== JAVA_LOCK.bridgeAbi ||
|
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imported.engineIdentity() !== JAVA_LOCK.engineIdentity ||
|
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imported.selfTest() !== 0
|
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) {
|
||||
throw new Error("The TeaVM Java bridge identity or self-test failed.");
|
||||
}
|
||||
|
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const execution = imported.execute("(?<=a)(b)\\1", "abb", 0, true, 10, 10);
|
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const executionState = { cursor: 0 };
|
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const executionFields = Array.from({ length: 9 }, () =>
|
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readField(execution, executionState),
|
||||
);
|
||||
if (
|
||||
executionState.cursor !== execution.length ||
|
||||
JSON.stringify(executionFields) !==
|
||||
JSON.stringify(["1", "ok", "1", "0", "1", "1", "3", "1", "2"])
|
||||
) {
|
||||
throw new Error("The TeaVM Java matching smoke test failed.");
|
||||
}
|
||||
|
||||
const replacement = imported.replace("(a)", "a a", "<$1>", 0, true, 10, 10);
|
||||
const replacementState = { cursor: 0 };
|
||||
const replacementFields = [];
|
||||
while (replacementState.cursor < replacement.length) {
|
||||
replacementFields.push(readField(replacement, replacementState));
|
||||
}
|
||||
if (
|
||||
replacementFields.at(-2) !== "0" ||
|
||||
replacementFields.at(-1) !== "<a> <a>"
|
||||
) {
|
||||
throw new Error("The TeaVM Java replacement smoke test failed.");
|
||||
}
|
||||
}
|
||||
|
||||
export async function verifyJavaPack(packDirectory, root) {
|
||||
const repositoryRoot = await assertRealDirectory(
|
||||
root,
|
||||
"Regex Tools repository",
|
||||
);
|
||||
const pack = await assertRealDirectory(packDirectory, "Java engine pack");
|
||||
const entries = (await readdir(pack, { withFileTypes: true })).sort(
|
||||
(left, right) =>
|
||||
left.name < right.name ? -1 : left.name > right.name ? 1 : 0,
|
||||
);
|
||||
if (
|
||||
entries.length !== PACK_FILES.length ||
|
||||
entries.some(
|
||||
(entry, index) =>
|
||||
entry.name !== PACK_FILES[index] ||
|
||||
!entry.isFile() ||
|
||||
entry.isSymbolicLink(),
|
||||
)
|
||||
) {
|
||||
throw new Error(
|
||||
`The staged Java pack must contain only: ${PACK_FILES.join(", ")}.`,
|
||||
);
|
||||
}
|
||||
if (
|
||||
(await sha256File(path.join(pack, "LICENSE.txt"))) !==
|
||||
JAVA_LOCK.source.licenseSha256
|
||||
) {
|
||||
throw new Error("The staged TeaVM licence does not match tag 0.15.0.");
|
||||
}
|
||||
const moduleText = await readFile(path.join(pack, "java-regex.mjs"), "utf8");
|
||||
if (
|
||||
moduleText.includes("sourceMappingURL") ||
|
||||
moduleText.includes("/mnt/") ||
|
||||
moduleText.includes("/home/") ||
|
||||
!moduleText.includes("as bridgeAbiVersion") ||
|
||||
!moduleText.includes("as engineIdentity") ||
|
||||
!moduleText.includes("as execute") ||
|
||||
!moduleText.includes("as replace") ||
|
||||
!moduleText.includes("as selfTest")
|
||||
) {
|
||||
throw new Error(
|
||||
"java-regex.mjs leaks a build path, has a source map, or lacks bridge exports.",
|
||||
);
|
||||
}
|
||||
|
||||
let metadata;
|
||||
try {
|
||||
metadata = JSON.parse(
|
||||
await readFile(path.join(pack, "engine-metadata.json"), "utf8"),
|
||||
);
|
||||
} catch (error) {
|
||||
throw new Error("Java engine-metadata.json is not valid JSON.", {
|
||||
cause: error,
|
||||
});
|
||||
}
|
||||
const expected = await expectedMetadata(repositoryRoot, pack);
|
||||
if (!equalJson(metadata, expected)) {
|
||||
throw new Error(
|
||||
"The staged Java metadata does not match the pinned build contract.",
|
||||
);
|
||||
}
|
||||
if (
|
||||
(await readFile(path.join(pack, "SHA256SUMS"), "utf8")) !==
|
||||
(await expectedChecksums(pack))
|
||||
) {
|
||||
throw new Error("The staged Java SHA256SUMS file is incorrect.");
|
||||
}
|
||||
await smokeJavaPack(pack);
|
||||
return metadata;
|
||||
}
|
||||
|
||||
async function replaceDirectory(stage, target, label) {
|
||||
const targetDetails = await lstat(target).catch(() => null);
|
||||
if (
|
||||
targetDetails &&
|
||||
(!targetDetails.isDirectory() || targetDetails.isSymbolicLink())
|
||||
) {
|
||||
throw new Error(`${label} must be a real directory.`);
|
||||
}
|
||||
if (!targetDetails) {
|
||||
await rename(stage, target);
|
||||
return;
|
||||
}
|
||||
const backup = `${target}.replaced-${process.pid}`;
|
||||
await rename(target, backup);
|
||||
try {
|
||||
await rename(stage, target);
|
||||
} catch (error) {
|
||||
await rename(backup, target);
|
||||
throw error;
|
||||
}
|
||||
await rm(backup, { recursive: true });
|
||||
}
|
||||
|
||||
export async function buildJavaPack(root, outputDirectory) {
|
||||
const repositoryRoot = await assertRealDirectory(
|
||||
root,
|
||||
"Regex Tools repository",
|
||||
);
|
||||
const engine = await assertRealDirectory(
|
||||
path.join(repositoryRoot, "engines", "java"),
|
||||
"Java engine source",
|
||||
);
|
||||
const { maven } = await verifyToolchain();
|
||||
const environment = cleanBuildEnvironment();
|
||||
const buildArguments = [
|
||||
"--batch-mode",
|
||||
"--no-transfer-progress",
|
||||
"--offline",
|
||||
"clean",
|
||||
"package",
|
||||
];
|
||||
await run(maven, buildArguments, { cwd: engine, env: environment });
|
||||
const generated = await assertRegularFile(
|
||||
path.join(engine, "target", "generated", "java-regex.mjs"),
|
||||
"generated TeaVM module",
|
||||
);
|
||||
const firstBuild = await readFile(generated);
|
||||
await run(maven, buildArguments, { cwd: engine, env: environment });
|
||||
const secondBuild = await readFile(generated);
|
||||
if (sha256(firstBuild) !== sha256(secondBuild)) {
|
||||
throw new Error(
|
||||
"Two clean TeaVM builds produced different Java module hashes.",
|
||||
);
|
||||
}
|
||||
|
||||
const output = path.resolve(
|
||||
repositoryRoot,
|
||||
outputDirectory ?? path.join(".engine-build", "java"),
|
||||
);
|
||||
await mkdir(path.dirname(output), { recursive: true });
|
||||
const stage = await mkdtemp(path.join(path.dirname(output), ".java-build-"));
|
||||
try {
|
||||
await copyFile(
|
||||
path.join(engine, "LICENSE-TeaVM.txt"),
|
||||
path.join(stage, "LICENSE.txt"),
|
||||
fsConstants.COPYFILE_EXCL,
|
||||
);
|
||||
await copyFile(
|
||||
path.join(engine, "NOTICE-TeaVM.txt"),
|
||||
path.join(stage, "NOTICE.txt"),
|
||||
fsConstants.COPYFILE_EXCL,
|
||||
);
|
||||
await writeFile(path.join(stage, "java-regex.mjs"), secondBuild, {
|
||||
flag: "wx",
|
||||
});
|
||||
const metadata = await expectedMetadata(repositoryRoot, stage);
|
||||
await writeFile(
|
||||
path.join(stage, "engine-metadata.json"),
|
||||
`${JSON.stringify(metadata, null, 2)}\n`,
|
||||
{ encoding: "utf8", flag: "wx" },
|
||||
);
|
||||
await writeFile(
|
||||
path.join(stage, "SHA256SUMS"),
|
||||
await expectedChecksums(stage),
|
||||
{ encoding: "utf8", flag: "wx" },
|
||||
);
|
||||
await verifyJavaPack(stage, repositoryRoot);
|
||||
await replaceDirectory(stage, output, "Java build output");
|
||||
return {
|
||||
output,
|
||||
metadata,
|
||||
moduleSha256: sha256(secondBuild),
|
||||
moduleBytes: secondBuild.byteLength,
|
||||
};
|
||||
} finally {
|
||||
await rm(stage, { recursive: true, force: true });
|
||||
}
|
||||
}
|
||||
|
||||
export async function installJavaPack(packDirectory, root) {
|
||||
const repositoryRoot = await assertRealDirectory(
|
||||
root,
|
||||
"Regex Tools repository",
|
||||
);
|
||||
const source = await assertRealDirectory(packDirectory, "verified Java pack");
|
||||
const metadata = await verifyJavaPack(source, repositoryRoot);
|
||||
const engineRoot = await assertRealDirectory(
|
||||
path.join(repositoryRoot, "public", "engines"),
|
||||
"public engine directory",
|
||||
);
|
||||
const target = path.join(engineRoot, "java");
|
||||
const stage = await mkdtemp(path.join(engineRoot, ".java-install-"));
|
||||
try {
|
||||
for (const name of PACK_FILES) {
|
||||
await copyFile(
|
||||
path.join(source, name),
|
||||
path.join(stage, name),
|
||||
fsConstants.COPYFILE_EXCL,
|
||||
);
|
||||
}
|
||||
await verifyJavaPack(stage, repositoryRoot);
|
||||
await replaceDirectory(stage, target, "public/engines/java");
|
||||
return { output: target, metadata };
|
||||
} finally {
|
||||
await rm(stage, { recursive: true, force: true });
|
||||
}
|
||||
}
|
||||
|
||||
const invokedFile = process.argv[1] ? path.resolve(process.argv[1]) : "";
|
||||
if (invokedFile === fileURLToPath(import.meta.url)) {
|
||||
if (process.argv.length > 3) {
|
||||
throw new Error(
|
||||
"Usage: node scripts/java-engine-pack.mjs [.engine-build/java]",
|
||||
);
|
||||
}
|
||||
const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
|
||||
const result = await buildJavaPack(root, process.argv[2]);
|
||||
console.log(
|
||||
`Built deterministic ${result.metadata.semanticIdentity} module: ${result.moduleSha256} (${result.moduleBytes.toLocaleString()} bytes).`,
|
||||
);
|
||||
}
|
||||
Reference in New Issue
Block a user