louloulibs is directly included, instead of being a submodule

Because this is a nightmare to manage

louloulibs/xmpp/xmpp_stanza.cpp

@@ -0,0 +1,274 @@
+#include <xmpp/xmpp_stanza.hpp>
+
+#include <utils/encoding.hpp>
+#include <utils/split.hpp>
+
+#include <stdexcept>
+#include <iostream>
+
+#include <string.h>
+
+std::string xml_escape(const std::string& data)
+{
+  std::string res;
+  res.reserve(data.size());
+  for (size_t pos = 0; pos != data.size(); ++pos)
+    {
+      switch(data[pos])
+        {
+        case '&':
+          res += "&amp;";
+          break;
+        case '<':
+          res += "&lt;";
+          break;
+        case '>':
+          res += "&gt;";
+          break;
+        case '\"':
+          res += "&quot;";
+          break;
+        case '\'':
+          res += "&apos;";
+          break;
+        default:
+          res += data[pos];
+          break;
+        }
+    }
+  return res;
+}
+
+std::string xml_unescape(const std::string& data)
+{
+  std::string res;
+  res.reserve(data.size());
+  const char* str = data.c_str();
+  while (str && *str && static_cast<size_t>(str - data.c_str()) < data.size())
+    {
+      if (*str == '&')
+        {
+          if (strncmp(str+1, "amp;", 4) == 0)
+            {
+              res += "&";
+              str += 4;
+            }
+          else if (strncmp(str+1, "lt;", 3) == 0)
+            {
+              res += "<";
+              str += 3;
+            }
+          else if (strncmp(str+1, "gt;", 3) == 0)
+            {
+              res += ">";
+              str += 3;
+            }
+          else if (strncmp(str+1, "quot;", 5) == 0)
+            {
+              res += "\"";
+              str += 5;
+            }
+          else if (strncmp(str+1, "apos;", 5) == 0)
+            {
+              res += "'";
+              str += 5;
+            }
+          else
+            res += "&";
+        }
+      else
+        res += *str;
+      str++;
+    }
+  return res;
+}
+
+XmlNode::XmlNode(const std::string& name, XmlNode* parent):
+  parent(parent),
+  closed(false)
+{
+  // split the namespace and the name
+  auto n = name.rfind(":");
+  if (n == std::string::npos)
+    this->name = name;
+  else
+    {
+      this->name = name.substr(n+1);
+      this->attributes["xmlns"] = name.substr(0, n);
+    }
+}
+
+XmlNode::XmlNode(const std::string& name):
+  XmlNode(name, nullptr)
+{
+}
+
+XmlNode::~XmlNode()
+{
+  this->delete_all_children();
+}
+
+void XmlNode::delete_all_children()
+{
+  for (auto& child: this->children)
+    {
+      delete child;
+    }
+  this->children.clear();
+}
+
+void XmlNode::set_attribute(const std::string& name, const std::string& value)
+{
+  this->attributes[name] = value;
+}
+
+void XmlNode::set_tail(const std::string& data)
+{
+  this->tail = data;
+}
+
+void XmlNode::add_to_tail(const std::string& data)
+{
+  this->tail += data;
+}
+
+void XmlNode::set_inner(const std::string& data)
+{
+  this->inner = data;
+}
+
+void XmlNode::add_to_inner(const std::string& data)
+{
+  this->inner += data;
+}
+
+std::string XmlNode::get_inner() const
+{
+  return this->inner;
+}
+
+std::string XmlNode::get_tail() const
+{
+  return this->tail;
+}
+
+XmlNode* XmlNode::get_child(const std::string& name, const std::string& xmlns) const
+{
+  for (auto& child: this->children)
+    {
+      if (child->name == name && child->get_tag("xmlns") == xmlns)
+        return child;
+    }
+  return nullptr;
+}
+
+std::vector<XmlNode*> XmlNode::get_children(const std::string& name, const std::string& xmlns) const
+{
+  std::vector<XmlNode*> res;
+  for (auto& child: this->children)
+    {
+      if (child->name == name && child->get_tag("xmlns") == xmlns)
+        res.push_back(child);
+    }
+  return res;
+}
+
+XmlNode* XmlNode::add_child(XmlNode* child)
+{
+  child->parent = this;
+  this->children.push_back(child);
+  return child;
+}
+
+XmlNode* XmlNode::add_child(XmlNode&& child)
+{
+  XmlNode* new_node = new XmlNode(std::move(child));
+  return this->add_child(new_node);
+}
+
+XmlNode* XmlNode::get_last_child() const
+{
+  return this->children.back();
+}
+
+void XmlNode::close()
+{
+  if (this->closed)
+    throw std::runtime_error("Closing an already closed XmlNode");
+  this->closed = true;
+}
+
+XmlNode* XmlNode::get_parent() const
+{
+  return this->parent;
+}
+
+void XmlNode::set_name(const std::string& name)
+{
+  this->name = name;
+}
+
+const std::string XmlNode::get_name() const
+{
+  return this->name;
+}
+
+std::string XmlNode::to_string() const
+{
+  std::string res("<");
+  res += this->name;
+  for (const auto& it: this->attributes)
+    res += " " + it.first + "='" + sanitize(it.second) + "'";
+  if (this->closed && !this->has_children() && this->inner.empty())
+    res += "/>";
+  else
+    {
+      res += ">" + sanitize(this->inner);
+      for (const auto& child: this->children)
+        res += child->to_string();
+      if (this->closed)
+        {
+          res += "</" + this->get_name() + ">";
+        }
+    }
+  res += sanitize(this->tail);
+  return res;
+}
+
+bool XmlNode::has_children() const
+{
+  return !this->children.empty();
+}
+
+const std::string XmlNode::get_tag(const std::string& name) const
+{
+  try
+    {
+      const auto& value = this->attributes.at(name);
+      return value;
+    }
+  catch (const std::out_of_range& e)
+    {
+      return "";
+    }
+}
+
+bool XmlNode::del_tag(const std::string& name)
+{
+  if (this->attributes.erase(name) != 0)
+    return true;
+  return false;
+}
+
+std::string& XmlNode::operator[](const std::string& name)
+{
+  return this->attributes[name];
+}
+
+std::string sanitize(const std::string& data)
+{
+  if (utils::is_valid_utf8(data.data()))
+    return xml_escape(utils::remove_invalid_xml_chars(data));
+  else
+    return xml_escape(utils::remove_invalid_xml_chars(utils::convert_to_utf8(data, "ISO-8859-1")));
+}