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| author | pack <pack@packgekko.xyz> | 2026-08-09 10:37:07 +0000 |
|---|---|---|
| committer | pack <pack@packgekko.xyz> | 2026-08-09 10:37:07 +0000 |
| commit | 55a4f1fc869e41aca748c63d3018f0448b1606e0 (patch) | |
| tree | d132d1d01772b6d53faee3e63c534dea5706b78a /node_modules/tar/dist/esm/replace.js | |
| download | crud-55a4f1fc869e41aca748c63d3018f0448b1606e0.tar.gz | |
first commit
Diffstat (limited to '')
| -rw-r--r-- | node_modules/tar/dist/esm/replace.js | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/node_modules/tar/dist/esm/replace.js b/node_modules/tar/dist/esm/replace.js new file mode 100644 index 0000000..77c878a --- /dev/null +++ b/node_modules/tar/dist/esm/replace.js @@ -0,0 +1,221 @@ +// tar -r +import { WriteStream, WriteStreamSync } from '@isaacs/fs-minipass'; +import fs from 'node:fs'; +import path from 'node:path'; +import { Header } from './header.js'; +import { list } from './list.js'; +import { makeCommand } from './make-command.js'; +import { isFile } from './options.js'; +import { Pack, PackSync } from './pack.js'; +// starting at the head of the file, read a Header +// If the checksum is invalid, that's our position to start writing +// If it is, jump forward by the specified size (round up to 512) +// and try again. +// Write the new Pack stream starting there. +const replaceSync = (opt, files) => { + const p = new PackSync(opt); + let threw = true; + let fd; + let position; + try { + try { + fd = fs.openSync(opt.file, 'r+'); + } + catch (er) { + if (er?.code === 'ENOENT') { + fd = fs.openSync(opt.file, 'w+'); + } + else { + throw er; + } + } + const st = fs.fstatSync(fd); + const headBuf = Buffer.alloc(512); + POSITION: for (position = 0; position < st.size; position += 512) { + for (let bufPos = 0, bytes = 0; bufPos < 512; bufPos += bytes) { + bytes = fs.readSync(fd, headBuf, bufPos, headBuf.length - bufPos, position + bufPos); + if (position === 0 && headBuf[0] === 0x1f && headBuf[1] === 0x8b) { + throw new Error('cannot append to compressed archives'); + } + if (!bytes) { + break POSITION; + } + } + const h = new Header(headBuf); + if (!h.cksumValid) { + break; + } + const entryBlockSize = 512 * Math.ceil((h.size || 0) / 512); + if (position + entryBlockSize + 512 > st.size) { + break; + } + // the 512 for the header we just parsed will be added as well + // also jump ahead all the blocks for the body + position += entryBlockSize; + if (opt.mtimeCache && h.mtime) { + opt.mtimeCache.set(String(h.path), h.mtime); + } + } + threw = false; + streamSync(opt, p, position, fd, files); + } + finally { + if (threw) { + try { + fs.closeSync(fd); + } + catch { } + } + } +}; +const streamSync = (opt, p, position, fd, files) => { + const stream = new WriteStreamSync(opt.file, { + fd: fd, + start: position, + }); + p.pipe(stream); + addFilesSync(p, files); +}; +const replaceAsync = (opt, files) => { + files = Array.from(files); + const p = new Pack(opt); + const getPos = (fd, size, cb_) => { + const cb = (er, pos) => { + if (er) { + fs.close(fd, _ => cb_(er)); + } + else { + cb_(null, pos); + } + }; + let position = 0; + if (size === 0) { + return cb(null, 0); + } + let bufPos = 0; + const headBuf = Buffer.alloc(512); + const onread = (er, bytes) => { + if (er || bytes === undefined) { + return cb(er); + } + bufPos += bytes; + if (bufPos < 512 && bytes) { + return fs.read(fd, headBuf, bufPos, headBuf.length - bufPos, position + bufPos, onread); + } + if (position === 0 && headBuf[0] === 0x1f && headBuf[1] === 0x8b) { + return cb(new Error('cannot append to compressed archives')); + } + // truncated header + if (bufPos < 512) { + return cb(null, position); + } + const h = new Header(headBuf); + if (!h.cksumValid) { + return cb(null, position); + } + /* c8 ignore next */ + const entryBlockSize = 512 * Math.ceil((h.size ?? 0) / 512); + if (position + entryBlockSize + 512 > size) { + return cb(null, position); + } + position += entryBlockSize + 512; + if (position >= size) { + return cb(null, position); + } + if (opt.mtimeCache && h.mtime) { + opt.mtimeCache.set(String(h.path), h.mtime); + } + bufPos = 0; + fs.read(fd, headBuf, 0, 512, position, onread); + }; + fs.read(fd, headBuf, 0, 512, position, onread); + }; + const promise = new Promise((resolve, reject) => { + p.on('error', reject); + let flag = 'r+'; + const onopen = (er, fd) => { + if (er && er.code === 'ENOENT' && flag === 'r+') { + flag = 'w+'; + return fs.open(opt.file, flag, onopen); + } + if (er || !fd) { + return reject(er); + } + fs.fstat(fd, (er, st) => { + if (er) { + return fs.close(fd, () => reject(er)); + } + getPos(fd, st.size, (er, position) => { + if (er) { + return reject(er); + } + const stream = new WriteStream(opt.file, { + fd: fd, + start: position, + }); + p.pipe(stream); + stream.on('error', reject); + stream.on('close', resolve); + addFilesAsync(p, files); + }); + }); + }; + fs.open(opt.file, flag, onopen); + }); + return promise; +}; +const addFilesSync = (p, files) => { + files.forEach(file => { + if (file.charAt(0) === '@') { + list({ + file: path.resolve(p.cwd, file.slice(1)), + sync: true, + noResume: true, + onReadEntry: entry => p.add(entry), + }); + } + else { + p.add(file); + } + }); + p.end(); +}; +const addFilesAsync = async (p, files) => { + for (const file of files) { + if (file.charAt(0) === '@') { + await list({ + file: path.resolve(String(p.cwd), file.slice(1)), + noResume: true, + onReadEntry: entry => p.add(entry), + }); + } + else { + p.add(file); + } + } + p.end(); +}; +export const replace = makeCommand(replaceSync, replaceAsync, +/* c8 ignore start */ +() => { + throw new TypeError('file is required'); +}, () => { + throw new TypeError('file is required'); +}, +/* c8 ignore stop */ +(opt, entries) => { + if (!isFile(opt)) { + throw new TypeError('file is required'); + } + if (opt.gzip || + opt.brotli || + opt.zstd || + opt.file.endsWith('.br') || + opt.file.endsWith('.tbr')) { + throw new TypeError('cannot append to compressed archives'); + } + if (!entries?.length) { + throw new TypeError('no paths specified to add/replace'); + } +}); +//# sourceMappingURL=replace.js.map
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