diff options
Diffstat (limited to 'sandbox/testAppNevena/Front/node_modules/tar/lib/list.js')
-rw-r--r-- | sandbox/testAppNevena/Front/node_modules/tar/lib/list.js | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/sandbox/testAppNevena/Front/node_modules/tar/lib/list.js b/sandbox/testAppNevena/Front/node_modules/tar/lib/list.js new file mode 100644 index 00000000..a0c1cf2f --- /dev/null +++ b/sandbox/testAppNevena/Front/node_modules/tar/lib/list.js @@ -0,0 +1,132 @@ +'use strict' + +// XXX: This shares a lot in common with extract.js +// maybe some DRY opportunity here? + +// tar -t +const hlo = require('./high-level-opt.js') +const Parser = require('./parse.js') +const fs = require('fs') +const fsm = require('fs-minipass') +const path = require('path') +const stripSlash = require('./strip-trailing-slashes.js') + +module.exports = (opt_, files, cb) => { + if (typeof opt_ === 'function') + cb = opt_, files = null, opt_ = {} + else if (Array.isArray(opt_)) + files = opt_, opt_ = {} + + if (typeof files === 'function') + cb = files, files = null + + if (!files) + files = [] + else + files = Array.from(files) + + const opt = hlo(opt_) + + if (opt.sync && typeof cb === 'function') + throw new TypeError('callback not supported for sync tar functions') + + if (!opt.file && typeof cb === 'function') + throw new TypeError('callback only supported with file option') + + if (files.length) + filesFilter(opt, files) + + if (!opt.noResume) + onentryFunction(opt) + + return opt.file && opt.sync ? listFileSync(opt) + : opt.file ? listFile(opt, cb) + : list(opt) +} + +const onentryFunction = opt => { + const onentry = opt.onentry + opt.onentry = onentry ? e => { + onentry(e) + e.resume() + } : e => e.resume() +} + +// construct a filter that limits the file entries listed +// include child entries if a dir is included +const filesFilter = (opt, files) => { + const map = new Map(files.map(f => [stripSlash(f), true])) + const filter = opt.filter + + const mapHas = (file, r) => { + const root = r || path.parse(file).root || '.' + const ret = file === root ? false + : map.has(file) ? map.get(file) + : mapHas(path.dirname(file), root) + + map.set(file, ret) + return ret + } + + opt.filter = filter + ? (file, entry) => filter(file, entry) && mapHas(stripSlash(file)) + : file => mapHas(stripSlash(file)) +} + +const listFileSync = opt => { + const p = list(opt) + const file = opt.file + let threw = true + let fd + try { + const stat = fs.statSync(file) + const readSize = opt.maxReadSize || 16 * 1024 * 1024 + if (stat.size < readSize) + p.end(fs.readFileSync(file)) + else { + let pos = 0 + const buf = Buffer.allocUnsafe(readSize) + fd = fs.openSync(file, 'r') + while (pos < stat.size) { + const bytesRead = fs.readSync(fd, buf, 0, readSize, pos) + pos += bytesRead + p.write(buf.slice(0, bytesRead)) + } + p.end() + } + threw = false + } finally { + if (threw && fd) { + try { + fs.closeSync(fd) + } catch (er) {} + } + } +} + +const listFile = (opt, cb) => { + const parse = new Parser(opt) + const readSize = opt.maxReadSize || 16 * 1024 * 1024 + + const file = opt.file + const p = new Promise((resolve, reject) => { + parse.on('error', reject) + parse.on('end', resolve) + + fs.stat(file, (er, stat) => { + if (er) + reject(er) + else { + const stream = new fsm.ReadStream(file, { + readSize: readSize, + size: stat.size, + }) + stream.on('error', reject) + stream.pipe(parse) + } + }) + }) + return cb ? p.then(cb, cb) : p +} + +const list = opt => new Parser(opt) |