mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-11-10 01:56:15 +08:00
Chris Tate
4d697c6ba7
- Add owned helper and runtime-pack contracts for macOS x64, Linux glibc/musl, Windows x64, and WASI. - Generalize LLVM target selection, package validation, linker plans, and release/CI matrices. - Document linker boundaries and add focused native-output and runtime-pack coverage.
36 lines
1.7 KiB
JavaScript
36 lines
1.7 KiB
JavaScript
import { readFile, writeFile } from "node:fs/promises";
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import { execFile } from "node:child_process";
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import { promisify } from "node:util";
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const run = promisify(execFile);
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const globalHeader = "!<arch>\n";
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const memberHeaderSize = 60;
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function replaceField(bytes, offset, width, value) {
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bytes.write(value.padEnd(width, " "), offset, width, "ascii");
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}
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async function normalizeMetadata(output) {
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const bytes = await readFile(output);
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if (bytes.subarray(0, globalHeader.length).toString("ascii") !== globalHeader) throw new Error(`archiver produced an invalid archive: ${output}`);
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let offset = globalHeader.length;
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while (offset < bytes.length) {
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const end = offset + memberHeaderSize;
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if (end > bytes.length || bytes.subarray(offset + 58, end).toString("ascii") !== "`\n") throw new Error(`archiver produced a malformed member header: ${output}`);
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const size = Number(bytes.subarray(offset + 48, offset + 58).toString("ascii").trim());
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if (!Number.isSafeInteger(size) || size < 0 || end + size > bytes.length) throw new Error(`archiver produced an invalid member size: ${output}`);
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replaceField(bytes, offset + 16, 12, "0");
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replaceField(bytes, offset + 28, 6, "0");
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replaceField(bytes, offset + 34, 6, "0");
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replaceField(bytes, offset + 40, 8, "100644");
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offset = end + size + (size % 2);
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}
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if (offset !== bytes.length) throw new Error(`archiver produced a truncated archive: ${output}`);
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await writeFile(output, bytes);
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}
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export async function createDeterministicArchive(archiver, output, objects, args = []) {
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await run(archiver, [...args, "rcs", output, ...objects], { env: { ...process.env, ZERO_AR_DATE: "1" } });
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await normalizeMetadata(output);
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}
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