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#include <xmpp/xmpp_stanza.hpp>
#include <utils/encoding.hpp>
#include <utils/split.hpp>
#include <stdexcept>
#include <iostream>
#include <sstream>
#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 += "&";
break;
case '<':
res += "<";
break;
case '>':
res += ">";
break;
case '\"':
res += """;
break;
case '\'':
res += "'";
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)
{
// 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)
{
}
void XmlNode::delete_all_children()
{
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;
}
const XmlNode* XmlNode::get_child(const std::string& name, const std::string& xmlns) const
{
for (const auto& child: this->children)
{
if (child->name == name && child->get_tag("xmlns") == xmlns)
return child.get();
}
return nullptr;
}
std::vector<const XmlNode*> XmlNode::get_children(const std::string& name, const std::string& xmlns) const
{
std::vector<const XmlNode*> res;
for (const auto& child: this->children)
{
if (child->name == name && child->get_tag("xmlns") == xmlns)
res.push_back(child.get());
}
return res;
}
XmlNode* XmlNode::add_child(std::unique_ptr<XmlNode> child)
{
child->parent = this;
auto ret = child.get();
this->children.push_back(std::move(child));
return ret;
}
XmlNode* XmlNode::add_child(XmlNode&& child)
{
auto new_node = std::make_unique<XmlNode>(std::move(child));
return this->add_child(std::move(new_node));
}
XmlNode* XmlNode::add_child(const XmlNode& child)
{
auto new_node = std::make_unique<XmlNode>(child);
return this->add_child(std::move(new_node));
}
XmlNode* XmlNode::get_last_child() const
{
return this->children.back().get();
}
XmlNode* XmlNode::get_parent() const
{
return this->parent;
}
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;
}
std::string XmlNode::to_string() const
{
std::ostringstream res;
res << "<" << this->name;
for (const auto& it: this->attributes)
res << " " << it.first << "='" << sanitize(it.second) + "'";
if (!this->has_children() && this->inner.empty())
res << "/>";
else
{
res << ">" + sanitize(this->inner);
for (const auto& child: this->children)
res << child->to_string();
res << "</" << this->get_name() << ">";
}
res << sanitize(this->tail);
return res.str();
}
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)
{
static const std::string def{};
return def;
}
}
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")));
}
std::ostream& operator<<(std::ostream& os, const XmlNode& node)
{
return os << node.to_string();
}
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