A few cleanups, and make a few things more modern

louloulibs/xmpp/xmpp_parser.cpp

@@ -124,12 +124,12 @@ void XmppParser::end_element(const XML_Char*)
     }
 }
 
-void XmppParser::char_data(const XML_Char* data, int len)
+void XmppParser::char_data(const XML_Char* data, const size_t len)
 {
   if (this->current_node->has_children())
-    this->current_node->get_last_child()->add_to_tail(std::string(data, len));
+    this->current_node->get_last_child()->add_to_tail({data, len});
   else
-    this->current_node->add_to_inner(std::string(data, len));
+    this->current_node->add_to_inner({data, len});
 }
 
 void XmppParser::stanza_event(const Stanza& stanza) const

louloulibs/xmpp/xmpp_parser.hpp

@@ -82,7 +82,7 @@ public:
   /**
    * Some inner or tail data has been parsed
    */
-  void char_data(const XML_Char* data, int len);
+  void char_data(const XML_Char* data, const size_t len);
   /**
    * Calls all the stanza_callbacks one by one.
    */

louloulibs/xmpp/xmpp_stanza.cpp

@@ -199,6 +199,11 @@ void XmlNode::set_name(const std::string& name)
   this->name = name;
 }
 
+void XmlNode::set_name(std::string&& name)
+{
+  this->name = std::move(name);
+}
+
 const std::string XmlNode::get_name() const
 {
   return this->name;
@@ -228,7 +233,7 @@ bool XmlNode::has_children() const
   return !this->children.empty();
 }
 
-const std::string XmlNode::get_tag(const std::string& name) const
+const std::string& XmlNode::get_tag(const std::string& name) const
 {
   try
     {
@@ -237,7 +242,8 @@ const std::string XmlNode::get_tag(const std::string& name) const
     }
   catch (const std::out_of_range& e)
     {
-      return "";
+      static const std::string def{};
+      return def;
     }
 }
 

louloulibs/xmpp/xmpp_stanza.hpp

@@ -96,6 +96,7 @@ public:
   XmlNode* get_last_child() const;
   XmlNode* get_parent() const;
   void set_name(const std::string& name);
+  void set_name(std::string&& name);
   const std::string get_name() const;
   /**
    * Serialize the stanza into a string
@@ -110,7 +111,7 @@ public:
    * Gets the value for the given attribute, returns an empty string if the
    * node as no such attribute.
    */
-  const std::string get_tag(const std::string& name) const;
+  const std::string& get_tag(const std::string& name) const;
   /**
    * Remove the attribute of the node. Does nothing if that attribute is not
    * present. Returns true if the tag was removed, false if it was absent.
@@ -133,13 +134,13 @@ private:
   XmlNode& operator=(XmlNode&&) = delete;
 };
 
+std::ostream& operator<<(std::ostream& os, const XmlNode& node);
+
 /**
  * An XMPP stanza is just an XML node of level 2 in the XMPP document (the
  * level 1 ones are the <stream::stream/>, and the ones above 2 are just the
  * content of the stanzas)
  */
-typedef XmlNode Stanza;
-
-std::ostream& operator<<(std::ostream& os, const XmlNode& node);
+using Stanza = XmlNode;
 
 #endif // XMPP_STANZA_INCLUDED