2 files changed, 169 insertions, 0 deletions
diff --git a/louloulibs b/louloulibs
deleted file mode 160000
-Subproject 0f3c1183e2bf0941ae2bffd3f31577bce4f3001
diff --git a/louloulibs/xmpp/xmpp_parser.cpp b/louloulibs/xmpp/xmpp_parser.cpp
new file mode 100644
index 0000000..6bb0d28
--- /dev/null
+++ b/louloulibs/xmpp/xmpp_parser.cpp
@@ -0,0 +1,169 @@
+#include <xmpp/xmpp_parser.hpp>
+#include <xmpp/xmpp_stanza.hpp>
+
+#include <logger/logger.hpp>
+
+/**
+ * Expat handlers. Called by the Expat library, never by ourself.
+ * They just forward the call to the XmppParser corresponding methods.
+ */
+
+static void start_element_handler(void* user_data, const XML_Char* name, const XML_Char** atts)
+{
+  static_cast<XmppParser*>(user_data)->start_element(name, atts);
+}
+
+static void end_element_handler(void* user_data, const XML_Char* name)
+{
+  static_cast<XmppParser*>(user_data)->end_element(name);
+}
+
+static void character_data_handler(void *user_data, const XML_Char *s, int len)
+{
+  static_cast<XmppParser*>(user_data)->char_data(s, len);
+}
+
+/**
+ * XmppParser class
+ */
+
+XmppParser::XmppParser():
+  level(0),
+  current_node(nullptr)
+{
+  this->init_xml_parser();
+}
+
+void XmppParser::init_xml_parser()
+{
+  // Create the expat parser
+  this->parser = XML_ParserCreateNS("UTF-8", ':');
+  XML_SetUserData(this->parser, static_cast<void*>(this));
+
+  // Install Expat handlers
+  XML_SetElementHandler(this->parser, &start_element_handler, &end_element_handler);
+  XML_SetCharacterDataHandler(this->parser, &character_data_handler);
+}
+
+XmppParser::~XmppParser()
+{
+  if (this->current_node)
+    delete this->current_node;
+  XML_ParserFree(this->parser);
+}
+
+int XmppParser::feed(const char* data, const int len, const bool is_final)
+{
+  int res = XML_Parse(this->parser, data, len, is_final);
+  if (res == XML_STATUS_ERROR &&
+      (XML_GetErrorCode(this->parser) != XML_ERROR_FINISHED))
+    log_error("Xml_Parse encountered an error: " <<
+              XML_ErrorString(XML_GetErrorCode(this->parser)))
+  return res;
+}
+
+int XmppParser::parse(const int len, const bool is_final)
+{
+  int res = XML_ParseBuffer(this->parser, len, is_final);
+  if (res == XML_STATUS_ERROR)
+    log_error("Xml_Parsebuffer encountered an error: " <<
+              XML_ErrorString(XML_GetErrorCode(this->parser)));
+  return res;
+}
+
+void XmppParser::reset()
+{
+  XML_ParserFree(this->parser);
+  this->init_xml_parser();
+  if (this->current_node)
+    delete this->current_node;
+  this->current_node = nullptr;
+  this->level = 0;
+}
+
+void* XmppParser::get_buffer(const size_t size) const
+{
+  return XML_GetBuffer(this->parser, static_cast<int>(size));
+}
+
+void XmppParser::start_element(const XML_Char* name, const XML_Char** attribute)
+{
+  level++;
+
+  XmlNode* new_node = new XmlNode(name, this->current_node);
+  if (this->current_node)
+    this->current_node->add_child(new_node);
+  this->current_node = new_node;
+  for (size_t i = 0; attribute[i]; i += 2)
+    this->current_node->set_attribute(attribute[i], attribute[i+1]);
+  if (this->level == 1)
+    this->stream_open_event(*this->current_node);
+}
+
+void XmppParser::end_element(const XML_Char* name)
+{
+  (void)name;
+  level--;
+  this->current_node->close();
+  if (level == 1)
+    {
+      this->stanza_event(*this->current_node);
+    }
+  if (level == 0)
+    {
+      this->stream_close_event(*this->current_node);
+      delete this->current_node;
+      this->current_node = nullptr;
+    }
+  else
+    this->current_node = this->current_node->get_parent();
+  if (level == 1)
+    this->current_node->delete_all_children();
+}
+
+void XmppParser::char_data(const XML_Char* data, int len)
+{
+  if (this->current_node->has_children())
+    this->current_node->get_last_child()->add_to_tail(std::string(data, len));
+  else
+    this->current_node->add_to_inner(std::string(data, len));
+}
+
+void XmppParser::stanza_event(const Stanza& stanza) const
+{
+  for (const auto& callback: this->stanza_callbacks)
+    {
+      try {
+        callback(stanza);
+      } catch (const std::exception& e) {
+        log_debug("Unhandled exception: " << e.what());
+      }
+    }
+}
+
+void XmppParser::stream_open_event(const XmlNode& node) const
+{
+  for (const auto& callback: this->stream_open_callbacks)
+    callback(node);
+}
+
+void XmppParser::stream_close_event(const XmlNode& node) const
+{
+  for (const auto& callback: this->stream_close_callbacks)
+    callback(node);
+}
+
+void XmppParser::add_stanza_callback(std::function<void(const Stanza&)>&& callback)
+{
+  this->stanza_callbacks.emplace_back(std::move(callback));
+}
+
+void XmppParser::add_stream_open_callback(std::function<void(const XmlNode&)>&& callback)
+{
+  this->stream_open_callbacks.emplace_back(std::move(callback));
+}
+
+void XmppParser::add_stream_close_callback(std::function<void(const XmlNode&)>&& callback)
+{
+  this->stream_close_callbacks.emplace_back(std::move(callback));
+}