111 lines
2.0 KiB
JavaScript
111 lines
2.0 KiB
JavaScript
'use strict';
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var fs = require('fs');
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var isZip = require('is-zip');
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var StatMode = require('stat-mode');
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var readAllStream = require('read-all-stream');
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var stripDirs = require('strip-dirs');
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var through = require('through2');
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var Vinyl = require('vinyl');
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var yauzl = require('yauzl');
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module.exports = function (opts) {
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opts = opts || {};
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opts.strip = Number(opts.strip) || 0;
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return through.obj(function (file, enc, cb) {
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var self = this;
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if (file.isNull()) {
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cb(null, file);
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return;
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}
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if (file.isStream()) {
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cb(new Error('Streaming is not supported'));
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return;
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}
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if (!file.extract || !isZip(file.contents)) {
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cb(null, file);
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return;
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}
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yauzl.fromBuffer(file.contents, function (err, zipFile) {
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var count = 0;
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if (err) {
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cb(err);
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return;
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}
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zipFile.on('error', cb);
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zipFile.on('entry', function (entry) {
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var filePath = stripDirs(entry.fileName, opts.strip);
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if (filePath === '.') {
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if (++count === zipFile.entryCount) {
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cb();
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}
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return;
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}
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var stat = new fs.Stats();
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var mode = (entry.externalFileAttributes >> 16) & 0xFFFF;
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stat.mode = mode;
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if (entry.getLastModDate()) {
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stat.mtime = entry.getLastModDate();
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}
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if (entry.fileName.charAt(entry.fileName.length - 1) === '/') {
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if (!mode) {
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new StatMode(stat).isDirectory(true);
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}
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self.push(new Vinyl({
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path: filePath,
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stat: stat
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}));
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if (++count === zipFile.entryCount) {
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cb();
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}
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return;
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}
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zipFile.openReadStream(entry, function (err, readStream) {
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if (err) {
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cb(err);
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return;
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}
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readAllStream(readStream, null, function (err, data) {
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if (err) {
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cb(err);
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return;
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}
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if (!mode) {
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new StatMode(stat).isFile(true);
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}
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self.push(new Vinyl({
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contents: data,
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path: filePath,
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stat: stat
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}));
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if (++count === zipFile.entryCount) {
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cb();
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}
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});
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});
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});
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});
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});
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};
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