Initial commit

1 files changed, 86 insertions, 0 deletions

diff --git a/node_modules/decompress-unzip/index.js b/node_modules/decompress-unzip/index.js
new file mode 100644
index 0000000..3c1f943
--- /dev/null
+++ b/node_modules/decompress-unzip/index.js
@@ -0,0 +1,86 @@
+'use strict';
+const fileType = require('file-type');
+const getStream = require('get-stream');
+const pify = require('pify');
+const yauzl = require('yauzl');
+
+const getType = (entry, mode) => {
+	const IFMT = 61440;
+	const IFDIR = 16384;
+	const IFLNK = 40960;
+	const madeBy = entry.versionMadeBy >> 8;
+
+	if ((mode & IFMT) === IFLNK) {
+		return 'symlink';
+	}
+
+	if ((mode & IFMT) === IFDIR || (madeBy === 0 && entry.externalFileAttributes === 16)) {
+		return 'directory';
+	}
+
+	return 'file';
+};
+
+const extractEntry = (entry, zip) => {
+	const file = {
+		mode: (entry.externalFileAttributes >> 16) & 0xFFFF,
+		mtime: entry.getLastModDate(),
+		path: entry.fileName
+	};
+
+	file.type = getType(entry, file.mode);
+
+	if (file.mode === 0 && file.type === 'directory') {
+		file.mode = 493;
+	}
+
+	if (file.mode === 0) {
+		file.mode = 420;
+	}
+
+	return pify(zip.openReadStream.bind(zip))(entry)
+		.then(getStream.buffer)
+		.then(buf => {
+			file.data = buf;
+
+			if (file.type === 'symlink') {
+				file.linkname = buf.toString();
+			}
+
+			return file;
+		})
+		.catch(err => {
+			zip.close();
+			throw err;
+		});
+};
+
+const extractFile = zip => new Promise((resolve, reject) => {
+	const files = [];
+
+	zip.readEntry();
+
+	zip.on('entry', entry => {
+		extractEntry(entry, zip)
+			.catch(reject)
+			.then(file => {
+				files.push(file);
+				zip.readEntry();
+			});
+	});
+
+	zip.on('error', reject);
+	zip.on('end', () => resolve(files));
+});
+
+module.exports = () => buf => {
+	if (!Buffer.isBuffer(buf)) {
+		return Promise.reject(new TypeError(`Expected a Buffer, got ${typeof buf}`));
+	}
+
+	if (!fileType(buf) || fileType(buf).ext !== 'zip') {
+		return Promise.resolve([]);
+	}
+
+	return pify(yauzl.fromBuffer)(buf, {lazyEntries: true}).then(extractFile);
+};