src/xmpp/xmpp_stanza.cpp


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174

#include <xmpp/xmpp_stanza.hpp>

#include <iostream>

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;
}


XmlNode::XmlNode(const std::string& name, XmlNode* parent):
  name(name),
  parent(parent),
  closed(false)
{
}

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::set_inner(const std::string& data)
{
  this->inner = xml_escape(data);
}

std::string XmlNode::get_inner() const
{
  return this->inner;
}

XmlNode* XmlNode::get_child(const std::string& name) const
{
  for (auto& child: this->children)
    {
      if (child->name == name)
        return child;
    }
  return nullptr;
}

void XmlNode::add_child(XmlNode* child)
{
  this->children.push_back(child);
}

void XmlNode::add_child(XmlNode&& child)
{
  XmlNode* new_node = new XmlNode(std::move(child));
  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;
}

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 + "='" + it.second + "'";
  if (this->closed && !this->has_children() && this->inner.empty())
    res += "/>";
  else
    {
      res += ">" + this->inner;
      for (const auto& child: this->children)
        res += child->to_string();
      if (this->closed)
        {
          res += "</" + this->name + ">";
        }
    }
  res += this->tail;
  return res;
}

void XmlNode::display() const
{
  std::cout << this->to_string() << std::endl;
}

bool XmlNode::has_children() const
{
  return !this->children.empty();
}

const std::string& XmlNode::operator[](const std::string& name) const
{
  try
    {
      const auto& value = this->attributes.at(name);
      return value;
    }
  catch (const std::out_of_range& e)
    {
      throw AttributeNotFound();
    }
}

std::string& XmlNode::operator[](const std::string& name)
{
  return this->attributes[name];
}