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

webrtc/libjingle/xmllite/xmlelement.h

+/*
+ *  Copyright 2004 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.
+ */
+
+#ifndef WEBRTC_LIBJINGLE_XMLLITE_XMLELEMENT_H_
+#define WEBRTC_LIBJINGLE_XMLLITE_XMLELEMENT_H_
+
+#include <iosfwd>
+#include <string>
+
+#include "webrtc/libjingle/xmllite/qname.h"
+
+namespace buzz {
+
+class XmlChild;
+class XmlText;
+class XmlElement;
+class XmlAttr;
+
+class XmlChild {
+ public:
+  XmlChild* NextChild() { return next_child_; }
+  const XmlChild* NextChild() const { return next_child_; }
+
+  bool IsText() const { return IsTextImpl(); }
+
+  XmlElement* AsElement() { return AsElementImpl(); }
+  const XmlElement* AsElement() const { return AsElementImpl(); }
+
+  XmlText* AsText() { return AsTextImpl(); }
+  const XmlText* AsText() const { return AsTextImpl(); }
+
+
+ protected:
+  XmlChild() :
+    next_child_(NULL) {
+  }
+
+  virtual bool IsTextImpl() const = 0;
+  virtual XmlElement* AsElementImpl() const = 0;
+  virtual XmlText* AsTextImpl() const = 0;
+
+
+  virtual ~XmlChild();
+
+ private:
+  friend class XmlElement;
+
+  XmlChild(const XmlChild& noimpl);
+
+  XmlChild* next_child_;
+};
+
+class XmlText : public XmlChild {
+ public:
+  explicit XmlText(const std::string& text) :
+    XmlChild(),
+    text_(text) {
+  }
+  explicit XmlText(const XmlText& t) :
+    XmlChild(),
+    text_(t.text_) {
+  }
+  explicit XmlText(const char* cstr, size_t len) :
+    XmlChild(),
+    text_(cstr, len) {
+  }
+  virtual ~XmlText();
+
+  const std::string& Text() const { return text_; }
+  void SetText(const std::string& text);
+  void AddParsedText(const char* buf, int len);
+  void AddText(const std::string& text);
+
+ protected:
+  virtual bool IsTextImpl() const;
+  virtual XmlElement* AsElementImpl() const;
+  virtual XmlText* AsTextImpl() const;
+
+ private:
+  std::string text_;
+};
+
+class XmlAttr {
+ public:
+  XmlAttr* NextAttr() const { return next_attr_; }
+  const QName& Name() const { return name_; }
+  const std::string& Value() const { return value_; }
+
+ private:
+  friend class XmlElement;
+
+  explicit XmlAttr(const QName& name, const std::string& value) :
+    next_attr_(NULL),
+    name_(name),
+    value_(value) {
+  }
+  explicit XmlAttr(const XmlAttr& att) :
+    next_attr_(NULL),
+    name_(att.name_),
+    value_(att.value_) {
+  }
+
+  XmlAttr* next_attr_;
+  QName name_;
+  std::string value_;
+};
+
+class XmlElement : public XmlChild {
+ public:
+  explicit XmlElement(const QName& name);
+  explicit XmlElement(const QName& name, bool useDefaultNs);
+  explicit XmlElement(const XmlElement& elt);
+
+  virtual ~XmlElement();
+
+  const QName& Name() const { return name_; }
+  void SetName(const QName& name) { name_ = name; }
+
+  const std::string BodyText() const;
+  void SetBodyText(const std::string& text);
+
+  const QName FirstElementName() const;
+
+  XmlAttr* FirstAttr();
+  const XmlAttr* FirstAttr() const
+    { return const_cast<XmlElement *>(this)->FirstAttr(); }
+
+  // Attr will return an empty string if the attribute isn't there:
+  // use HasAttr to test presence of an attribute.
+  const std::string Attr(const StaticQName& name) const;
+  const std::string Attr(const QName& name) const;
+  bool HasAttr(const StaticQName& name) const;
+  bool HasAttr(const QName& name) const;
+  void SetAttr(const QName& name, const std::string& value);
+  void ClearAttr(const QName& name);
+
+  XmlChild* FirstChild();
+  const XmlChild* FirstChild() const {
+    return const_cast<XmlElement *>(this)->FirstChild();
+  }
+
+  XmlElement* FirstElement();
+  const XmlElement* FirstElement() const {
+    return const_cast<XmlElement *>(this)->FirstElement();
+  }
+
+  XmlElement* NextElement();
+  const XmlElement* NextElement() const {
+    return const_cast<XmlElement *>(this)->NextElement();
+  }
+
+  XmlElement* FirstWithNamespace(const std::string& ns);
+  const XmlElement* FirstWithNamespace(const std::string& ns) const {
+    return const_cast<XmlElement *>(this)->FirstWithNamespace(ns);
+  }
+
+  XmlElement* NextWithNamespace(const std::string& ns);
+  const XmlElement* NextWithNamespace(const std::string& ns) const {
+    return const_cast<XmlElement *>(this)->NextWithNamespace(ns);
+  }
+
+  XmlElement* FirstNamed(const StaticQName& name);
+  const XmlElement* FirstNamed(const StaticQName& name) const {
+    return const_cast<XmlElement *>(this)->FirstNamed(name);
+  }
+
+  XmlElement* FirstNamed(const QName& name);
+  const XmlElement* FirstNamed(const QName& name) const {
+    return const_cast<XmlElement *>(this)->FirstNamed(name);
+  }
+
+  XmlElement* NextNamed(const StaticQName& name);
+  const XmlElement* NextNamed(const StaticQName& name) const {
+    return const_cast<XmlElement *>(this)->NextNamed(name);
+  }
+
+  XmlElement* NextNamed(const QName& name);
+  const XmlElement* NextNamed(const QName& name) const {
+    return const_cast<XmlElement *>(this)->NextNamed(name);
+  }
+
+  // Finds the first element named 'name'.  If that element can't be found then
+  // adds one and returns it.
+  XmlElement* FindOrAddNamedChild(const QName& name);
+
+  const std::string TextNamed(const QName& name) const;
+
+  void InsertChildAfter(XmlChild* predecessor, XmlChild* new_child);
+  void RemoveChildAfter(XmlChild* predecessor);
+
+  void AddParsedText(const char* buf, int len);
+  // Note: CDATA is not supported by XMPP, therefore using this function will
+  // generate non-XMPP compatible XML.
+  void AddCDATAText(const char* buf, int len);
+  void AddText(const std::string& text);
+  void AddText(const std::string& text, int depth);
+  void AddElement(XmlElement* child);
+  void AddElement(XmlElement* child, int depth);
+  void AddAttr(const QName& name, const std::string& value);
+  void AddAttr(const QName& name, const std::string& value, int depth);
+  void ClearNamedChildren(const QName& name);
+  void ClearAttributes();
+  void ClearChildren();
+
+  static XmlElement* ForStr(const std::string& str);
+  std::string Str() const;
+
+  bool IsCDATA() const { return cdata_; }
+
+ protected:
+  virtual bool IsTextImpl() const;
+  virtual XmlElement* AsElementImpl() const;
+  virtual XmlText* AsTextImpl() const;
+
+ private:
+  QName name_;
+  XmlAttr* first_attr_;
+  XmlAttr* last_attr_;
+  XmlChild* first_child_;
+  XmlChild* last_child_;
+  bool cdata_;
+};
+
+}  // namespace buzz
+
+#endif  // WEBRTC_LIBJINGLE_XMLLITE_XMLELEMENT_H_