[Chromoting] Move shared webapp JS files from crd/js -> base/js

remoting/webapp/crd/js/xmpp_stream_parser.js

Index: remoting/webapp/crd/js/xmpp_stream_parser.js
diff --git a/remoting/webapp/crd/js/xmpp_stream_parser.js b/remoting/webapp/crd/js/xmpp_stream_parser.js
deleted file mode 100644
index 918caf01051f0bbe8bb9b4618ea92fc3d9703cc4..0000000000000000000000000000000000000000
--- a/remoting/webapp/crd/js/xmpp_stream_parser.js
+++ /dev/null
@@ -1,258 +0,0 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-'use strict';
-
-/** @suppress {duplicate} */
-var remoting = remoting || {};
-
-/**
- * XmppStreamParser is used to parse XMPP stream. Data is fed to the parser
- * using appendData() method and it calls |onStanzaCallback| and
- * |onErrorCallback| specified using setCallbacks().
- *
- * @constructor
- */
-remoting.XmppStreamParser = function() {
-  /** @type {function(Element):void} @private */
-  this.onStanzaCallback_ = function(stanza) {};
-  /** @type {function(string):void} @private */
-  this.onErrorCallback_ = function(error) {};
-
-  /**
-   * Buffer containing the data that has been received but haven't been parsed.
-   * @private
-   */
-  this.data_ = new ArrayBuffer(0);
-
-  /**
-   * Current depth in the XML stream.
-   * @private
-   */
-  this.depth_ = 0;
-
-  /**
-   * Set to true after error.
-   * @private
-   */
-  this.error_ = false;
-
-  /**
-   * The <stream> opening tag received at the beginning of the stream.
-   * @private
-   */
-  this.startTag_ = '';
-
-  /**
-   * Closing tag matching |startTag_|.
-   * @private
-   */
-  this.startTagEnd_ = '';
-
-  /**
-   * String containing current incomplete stanza.
-   * @private
-   */
-  this.currentStanza_ = '';
-}
-
-/**
- * Sets callbacks to be called on incoming stanzas and on error.
- *
- * @param {function(Element):void} onStanzaCallback
- * @param {function(string):void} onErrorCallback
- */
-remoting.XmppStreamParser.prototype.setCallbacks =
-    function(onStanzaCallback, onErrorCallback) {
-  this.onStanzaCallback_ = onStanzaCallback;
-  this.onErrorCallback_ = onErrorCallback;
-}
-
-/** @param {ArrayBuffer} data */
-remoting.XmppStreamParser.prototype.appendData = function(data) {
-  base.debug.assert(!this.error_);
-
-  if (this.data_.byteLength > 0) {
-    // Concatenate two buffers.
-    var newData = new Uint8Array(this.data_.byteLength + data.byteLength);
-    newData.set(new Uint8Array(this.data_), 0);
-    newData.set(new Uint8Array(data), this.data_.byteLength);
-    this.data_ = newData.buffer;
-  } else {
-    this.data_ = data;
-  }
-
-  // Check if the newly appended data completes XML tag or a piece of text by
-  // looking for '<' and '>' char codes. This has to be done before converting
-  // data to string because the input may not contain complete UTF-8 sequence.
-  var tagStartCode = '<'.charCodeAt(0);
-  var tagEndCode = '>'.charCodeAt(0);
-  var spaceCode = ' '.charCodeAt(0);
-  var tryAgain = true;
-  while (this.data_.byteLength > 0 && tryAgain && !this.error_) {
-    tryAgain = false;
-
-    // If we are not currently in a middle of a stanza then skip spaces (server
-    // may send spaces periodically as heartbeats) and make sure that the first
-    // character starts XML tag.
-    if (this.depth_ <= 1) {
-      var view = new DataView(this.data_);
-      var firstChar = view.getUint8(0);
-      if (firstChar == spaceCode) {
-        tryAgain = true;
-        this.data_ = this.data_.slice(1);
-        continue;
-      } else if (firstChar != tagStartCode) {
-        var dataAsText = '';
-        try {
-          dataAsText = base.decodeUtf8(this.data_);
-        } catch (exception) {
-          dataAsText = 'charCode = ' + firstChar;
-        }
-        this.processError_('Received unexpected text data: ' + dataAsText);
-        return;
-      }
-    }
-
-    // Iterate over characters in the buffer to find complete tags.
-    var view = new DataView(this.data_);
-    for (var i = 0; i < view.byteLength; ++i) {
-      var currentChar = view.getUint8(i);
-      if (currentChar == tagStartCode) {
-        if (i > 0) {
-          var text = this.extractStringFromBuffer_(i);
-          if (text == null)
-            return;
-          this.processText_(text);
-          tryAgain = true;
-          break;
-        }
-      } else if (currentChar == tagEndCode) {
-        var tag = this.extractStringFromBuffer_(i + 1);
-        if (tag == null)
-          return;
-        if (tag.charAt(0) != '<') {
-          this.processError_('Received \'>\' without \'<\': ' + tag);
-          return;
-        }
-        this.processTag_(tag);
-        tryAgain = true;
-        break;
-      }
-    }
-  }
-}
-
-/**
- * @param {string} text
- * @private
- */
-remoting.XmppStreamParser.prototype.processText_ = function(text) {
-  // Tokenization code in appendData() shouldn't allow text tokens in between
-  // stanzas.
-  base.debug.assert(this.depth_ > 1);
-  this.currentStanza_ += text;
-}
-
-/**
- * @param {string} tag
- * @private
- */
-remoting.XmppStreamParser.prototype.processTag_ = function(tag) {
-  base.debug.assert(tag.charAt(0) == '<');
-  base.debug.assert(tag.charAt(tag.length - 1) == '>');
-
-  this.currentStanza_ += tag;
-
-  var openTag = tag.charAt(1) != '/';
-  if (openTag) {
-    ++this.depth_;
-    if (this.depth_ == 1) {
-      this.startTag_ = this.currentStanza_;
-      this.currentStanza_ = '';
-
-      // Create end tag matching the start.
-      var tagName =
-          this.startTag_.substr(1, this.startTag_.length - 2).split(' ', 1)[0];
-      this.startTagEnd_ = '</' + tagName + '>';
-
-      // Try parsing start together with the end
-      var parsed = this.parseTag_(this.startTag_ + this.startTagEnd_);
-      if (!parsed) {
-        this.processError_('Failed to parse start tag: ' + this.startTag_);
-        return;
-      }
-    }
-  }
-
-  var closingTag =
-      (tag.charAt(1) == '/') || (tag.charAt(tag.length - 2) == '/');
-  if (closingTag) {
-    // The first start tag is not expected to be closed.
-    if (this.depth_ <= 1) {
-      this.processError_('Unexpected closing tag: ' + tag)
-      return;
-    }
-    --this.depth_;
-    if (this.depth_ == 1) {
-      this.processCompleteStanza_();
-      this.currentStanza_ = '';
-    }
-  }
-}
-
-/**
- * @private
- */
-remoting.XmppStreamParser.prototype.processCompleteStanza_ = function() {
-  var stanza = this.startTag_ + this.currentStanza_ + this.startTagEnd_;
-  var parsed = this.parseTag_(stanza);
-  if (!parsed) {
-    this.processError_('Failed to parse stanza: ' + this.currentStanza_);
-    return;
-  }
-  this.onStanzaCallback_(parsed.firstElementChild);
-}
-
-/**
- * @param {string} text
- * @private
- */
-remoting.XmppStreamParser.prototype.processError_ = function(text) {
-  this.onErrorCallback_(text);
-  this.error_ = true;
-}
-
-/**
- * Helper to extract and decode |bytes| bytes from |data_|. Returns NULL in case
- * the buffer contains invalidUTF-8.
- *
- * @param {number} bytes Specifies how many bytes should be extracted.
- * @returns {string?}
- * @private
- */
-remoting.XmppStreamParser.prototype.extractStringFromBuffer_ = function(bytes) {
-  var result = '';
-  try {
-    result = base.decodeUtf8(this.data_.slice(0, bytes));
-  } catch (exception) {
-    this.processError_('Received invalid UTF-8 data.');
-    result = null;
-  }
-  this.data_ = this.data_.slice(bytes);
-  return result;
-}
-
-/**
- * @param {string} text
- * @return {Element}
- * @private
- */
-remoting.XmppStreamParser.prototype.parseTag_ = function(text) {
-  /** @type {Document} */
-  var result = new DOMParser().parseFromString(text, 'text/xml');
-  if (result.querySelector('parsererror') != null)
-    return null;
-  return result.firstElementChild;
-}