Add xmllite and xmpp sources to third_party/

third_party/libjingle_xmpp/xmllite/qname.h

+// Copyright 2004 The Chromium Authors. All rights reserved.

[Sergey Ulanov, 2016/12/22 22:57:59]

I think the right thing to do here is to keep the old copyright headers from
WebRTC.
It looks like some files have old headers, while others have it replaced by the
chromium header. Was that intentional?

[kjellander_chromium, 2016/12/27 12:49:21]

You're probably right, I changed to Chromium headers in my previous attempt to
put the sources into src/jingle. I've restored all the headers to WebRTC headers
now.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef WEBRTC_LIBJINGLE_XMLLITE_QNAME_H_
+#define WEBRTC_LIBJINGLE_XMLLITE_QNAME_H_
+
+#include <string>
+
+namespace buzz {
+
+class QName;
+
+// StaticQName is used to represend constant quailified names. They
+// can be initialized statically and don't need intializers code, e.g.
+//   const StaticQName QN_FOO = { "foo_namespace", "foo" };
+//
+// Beside this use case, QName should be used everywhere
+// else. StaticQName instances are implicitly converted to QName
+// objects.
+struct StaticQName {
+  const char* const ns;
+  const char* const local;
+
+  bool operator==(const QName& other) const;
+  bool operator!=(const QName& other) const;
+};
+
+class QName {
+ public:
+  QName();
+  QName(const QName& qname);
+  QName(const StaticQName& const_value);
+  QName(const std::string& ns, const std::string& local);
+  explicit QName(const std::string& merged_or_local);
+  ~QName();
+
+  const std::string& Namespace() const { return namespace_; }
+  const std::string& LocalPart() const { return local_part_; }
+  std::string Merged() const;
+  bool IsEmpty() const;
+
+  int Compare(const StaticQName& other) const;
+  int Compare(const QName& other) const;
+
+  bool operator==(const StaticQName& other) const {
+    return Compare(other) == 0;
+  }
+  bool operator==(const QName& other) const {
+    return Compare(other) == 0;
+  }
+  bool operator!=(const StaticQName& other) const {
+    return Compare(other) != 0;
+  }
+  bool operator!=(const QName& other) const {
+    return Compare(other) != 0;
+  }
+  bool operator<(const QName& other) const {
+    return Compare(other) < 0;
+  }
+
+ private:
+  std::string namespace_;
+  std::string local_part_;
+};
+
+inline bool StaticQName::operator==(const QName& other) const {
+  return other.Compare(*this) == 0;
+}
+
+inline bool StaticQName::operator!=(const QName& other) const {
+  return other.Compare(*this) != 0;
+}
+
+}  // namespace buzz
+
+#endif  // WEBRTC_LIBJINGLE_XMLLITE_QNAME_H_