nix/libutil/xml-writer.hh

   1 #pragma once
   2
   3 #include <iostream>
   4 #include <string>
   5 #include <list>
   6 #include <map>
   7
   8
   9 namespace nix {
  10
  11 using std::string;
  12 using std::map;
  13 using std::list;
  14
  15
  16 typedef map<string, string> XMLAttrs;
  17
  18
  19 class XMLWriter
  20 {
  21 private:
  22
  23     std::ostream & output;
  24
  25     bool indent;
  26     bool closed;
  27
  28     list<string> pendingElems;
  29
  30 public:
  31
  32     XMLWriter(bool indent, std::ostream & output);
  33     ~XMLWriter();
  34
  35     void close();
  36
  37     void openElement(const string & name,
  38         const XMLAttrs & attrs = XMLAttrs());
  39     void closeElement();
  40
  41     void writeEmptyElement(const string & name,
  42         const XMLAttrs & attrs = XMLAttrs());
  43
  44 private:
  45     void writeAttrs(const XMLAttrs & attrs);
  46
  47     void indent_(unsigned int depth);
  48 };
  49
  50
  51 class XMLOpenElement
  52 {
  53 private:
  54     XMLWriter & writer;
  55 public:
  56     XMLOpenElement(XMLWriter & writer, const string & name,
  57         const XMLAttrs & attrs = XMLAttrs())
  58         : writer(writer)
  59     {
  60         writer.openElement(name, attrs);
  61     }
  62     ~XMLOpenElement()
  63     {
  64         writer.closeElement();
  65     }
  66 };
  67
  68
  69 }