Revert of Remove webrtc/libjingle/{xmllite,xmpp}

webrtc/libjingle/xmpp/mucroomdiscoverytask.cc

Index: webrtc/libjingle/xmpp/mucroomdiscoverytask.cc
diff --git a/webrtc/libjingle/xmpp/mucroomdiscoverytask.cc b/webrtc/libjingle/xmpp/mucroomdiscoverytask.cc
new file mode 100644
index 0000000000000000000000000000000000000000..05a56716b9620e32e6e0e579dde657c70d677f90
--- /dev/null
+++ b/webrtc/libjingle/xmpp/mucroomdiscoverytask.cc
@@ -0,0 +1,66 @@
+/*
+ *  Copyright 2012 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "webrtc/libjingle/xmpp/mucroomdiscoverytask.h"
+
+#include "webrtc/libjingle/xmpp/constants.h"
+
+namespace buzz {
+
+MucRoomDiscoveryTask::MucRoomDiscoveryTask(
+    XmppTaskParentInterface* parent,
+    const Jid& room_jid)
+    : IqTask(parent, STR_GET, room_jid,
+             new buzz::XmlElement(buzz::QN_DISCO_INFO_QUERY)) {
+}
+
+void MucRoomDiscoveryTask::HandleResult(const XmlElement* stanza) {
+  const XmlElement* query = stanza->FirstNamed(QN_DISCO_INFO_QUERY);
+  if (query == NULL) {
+    SignalError(this, NULL);
+    return;
+  }
+
+  std::set<std::string> features;
+  std::map<std::string, std::string> extended_info;
+  const XmlElement* identity = query->FirstNamed(QN_DISCO_IDENTITY);
+  if (identity == NULL || !identity->HasAttr(QN_NAME)) {
+    SignalResult(this, false, "", "", features, extended_info);
+    return;
+  }
+
+  const std::string name(identity->Attr(QN_NAME));
+
+  // Get the conversation id
+  const XmlElement* conversation =
+      identity->FirstNamed(QN_GOOGLE_MUC_HANGOUT_CONVERSATION_ID);
+  std::string conversation_id;
+  if (conversation != NULL) {
+    conversation_id = conversation->BodyText();
+  }
+
+  for (const XmlElement* feature = query->FirstNamed(QN_DISCO_FEATURE);
+       feature != NULL; feature = feature->NextNamed(QN_DISCO_FEATURE)) {
+    features.insert(feature->Attr(QN_VAR));
+  }
+
+  const XmlElement* data_x = query->FirstNamed(QN_XDATA_X);
+  if (data_x != NULL) {
+    for (const XmlElement* field = data_x->FirstNamed(QN_XDATA_FIELD);
+         field != NULL; field = field->NextNamed(QN_XDATA_FIELD)) {
+      const std::string key(field->Attr(QN_VAR));
+      extended_info[key] = field->Attr(QN_XDATA_VALUE);
+    }
+  }
+
+  SignalResult(this, true, name, conversation_id, features, extended_info);
+}
+
+}  // namespace buzz