Remove archiver dependency

server/libs/archiver/zip-stream/index.js

@@ -0,0 +1,187 @@
+/**
+ * ZipStream
+ *
+ * @ignore
+ * @license [MIT]{@link https://github.com/archiverjs/node-zip-stream/blob/master/LICENSE}
+ * @copyright (c) 2014 Chris Talkington, contributors.
+ */
+var inherits = require('util').inherits;
+
+var ZipArchiveOutputStream = require('../compress-commons').ZipArchiveOutputStream;
+var ZipArchiveEntry = require('../compress-commons').ZipArchiveEntry;
+
+var util = require('archiver-utils');
+
+/**
+ * @constructor
+ * @extends external:ZipArchiveOutputStream
+ * @param {Object} [options]
+ * @param {String} [options.comment] Sets the zip archive comment.
+ * @param {Boolean} [options.forceLocalTime=false] Forces the archive to contain local file times instead of UTC.
+ * @param {Boolean} [options.forceZip64=false] Forces the archive to contain ZIP64 headers.
+ * @param {Boolean} [options.store=false] Sets the compression method to STORE.
+ * @param {Object} [options.zlib] Passed to [zlib]{@link https://nodejs.org/api/zlib.html#zlib_class_options}
+ * to control compression.
+ */
+var ZipStream = module.exports = function (options) {
+  if (!(this instanceof ZipStream)) {
+    return new ZipStream(options);
+  }
+
+  options = this.options = options || {};
+  options.zlib = options.zlib || {};
+
+  ZipArchiveOutputStream.call(this, options);
+
+  if (typeof options.level === 'number' && options.level >= 0) {
+    options.zlib.level = options.level;
+    delete options.level;
+  }
+
+  if (!options.forceZip64 && typeof options.zlib.level === 'number' && options.zlib.level === 0) {
+    options.store = true;
+  }
+
+  options.namePrependSlash = options.namePrependSlash || false;
+
+  if (options.comment && options.comment.length > 0) {
+    this.setComment(options.comment);
+  }
+};
+
+inherits(ZipStream, ZipArchiveOutputStream);
+
+/**
+ * Normalizes entry data with fallbacks for key properties.
+ *
+ * @private
+ * @param  {Object} data
+ * @return {Object}
+ */
+ZipStream.prototype._normalizeFileData = function (data) {
+  data = util.defaults(data, {
+    type: 'file',
+    name: null,
+    namePrependSlash: this.options.namePrependSlash,
+    linkname: null,
+    date: null,
+    mode: null,
+    store: this.options.store,
+    comment: ''
+  });
+
+  var isDir = data.type === 'directory';
+  var isSymlink = data.type === 'symlink';
+
+  if (data.name) {
+    data.name = util.sanitizePath(data.name);
+
+    if (!isSymlink && data.name.slice(-1) === '/') {
+      isDir = true;
+      data.type = 'directory';
+    } else if (isDir) {
+      data.name += '/';
+    }
+  }
+
+  if (isDir || isSymlink) {
+    data.store = true;
+  }
+
+  data.date = util.dateify(data.date);
+
+  return data;
+};
+
+/**
+ * Appends an entry given an input source (text string, buffer, or stream).
+ *
+ * @param  {(Buffer|Stream|String)} source The input source.
+ * @param  {Object} data
+ * @param  {String} data.name Sets the entry name including internal path.
+ * @param  {String} [data.comment] Sets the entry comment.
+ * @param  {(String|Date)} [data.date=NOW()] Sets the entry date.
+ * @param  {Number} [data.mode=D:0755/F:0644] Sets the entry permissions.
+ * @param  {Boolean} [data.store=options.store] Sets the compression method to STORE.
+ * @param  {String} [data.type=file] Sets the entry type. Defaults to `directory`
+ * if name ends with trailing slash.
+ * @param  {Function} callback
+ * @return this
+ */
+ZipStream.prototype.entry = function (source, data, callback) {
+  if (typeof callback !== 'function') {
+    callback = this._emitErrorCallback.bind(this);
+  }
+
+  data = this._normalizeFileData(data);
+
+  if (data.type !== 'file' && data.type !== 'directory' && data.type !== 'symlink') {
+    callback(new Error(data.type + ' entries not currently supported'));
+    return;
+  }
+
+  if (typeof data.name !== 'string' || data.name.length === 0) {
+    callback(new Error('entry name must be a non-empty string value'));
+    return;
+  }
+
+  if (data.type === 'symlink' && typeof data.linkname !== 'string') {
+    callback(new Error('entry linkname must be a non-empty string value when type equals symlink'));
+    return;
+  }
+
+  var entry = new ZipArchiveEntry(data.name);
+  entry.setTime(data.date, this.options.forceLocalTime);
+
+  if (data.namePrependSlash) {
+    entry.setName(data.name, true);
+  }
+
+  if (data.store) {
+    entry.setMethod(0);
+  }
+
+  if (data.comment.length > 0) {
+    entry.setComment(data.comment);
+  }
+
+  if (data.type === 'symlink' && typeof data.mode !== 'number') {
+    data.mode = 40960; // 0120000
+  }
+
+  if (typeof data.mode === 'number') {
+    if (data.type === 'symlink') {
+      data.mode |= 40960;
+    }
+
+    entry.setUnixMode(data.mode);
+  }
+
+  if (data.type === 'symlink' && typeof data.linkname === 'string') {
+    source = Buffer.from(data.linkname);
+  }
+
+  return ZipArchiveOutputStream.prototype.entry.call(this, entry, source, callback);
+};
+
+/**
+ * Finalizes the instance and prevents further appending to the archive
+ * structure (queue will continue til drained).
+ *
+ * @return void
+ */
+ZipStream.prototype.finalize = function () {
+  this.finish();
+};
+
+/**
+ * Returns the current number of bytes written to this stream.
+ * @function ZipStream#getBytesWritten
+ * @returns {Number}
+ */
+
+/**
+ * Compress Commons ZipArchiveOutputStream
+ * @external ZipArchiveOutputStream
+ * @see {@link https://github.com/archiverjs/node-compress-commons}
+ */