mcs/class/Mono.Security/Mono.Xml/SecurityParser.cs

   1 //
   2 // Mono.Xml.SecurityParser.cs class implementation
   3 //
   4 // Author:
   5 //      Sebastien Pouliot (spouliot@motus.com)
   6 //
   7 // (C) 2003 Motus Technologies Inc. (http://www.motus.com)
   8 //
   9
  10 using System;
  11 using System.Collections;
  12 using System.Security;
  13
  14 namespace Mono.Xml {
  15
  16         // convert an XML document into SecurityElement objects
  17         [CLSCompliant(false)]
  18 #if INSIDE_CORLIB
  19         internal
  20 #else
  21         public
  22 #endif
  23         class SecurityParser : MiniParser, MiniParser.IHandler, MiniParser.IReader {
  24
  25                 private SecurityElement root;
  26
  27                 public SecurityParser () : base ()
  28                 {
  29                         stack = new Stack ();
  30                 }
  31
  32                 public void LoadXml (string xml)
  33                 {
  34                         root = null;
  35                         xmldoc = xml;
  36                         pos = 0;
  37                         stack.Clear ();
  38                         Parse (this, this);
  39                 }
  40
  41                 public SecurityElement ToXml ()
  42                 {
  43                         return root;
  44                 }
  45
  46                 // IReader
  47
  48                 private string xmldoc;
  49                 private int pos;
  50
  51                 public int Read ()
  52                 {
  53                         if (pos >= xmldoc.Length)
  54                                 return -1;
  55                         return (int) xmldoc [pos++];
  56                 }
  57
  58                 // IHandler
  59
  60                 private SecurityElement current;
  61                 private Stack stack;
  62
  63                 public void OnStartParsing (MiniParser parser) {}
  64
  65                 public void OnStartElement (string name, MiniParser.IAttrList attrs)
  66                 {
  67                         SecurityElement newel = new SecurityElement (name);
  68                         if (root == null) {
  69                                 root = newel;
  70                                 current = newel;
  71                         }
  72                         else {
  73                                 SecurityElement parent = (SecurityElement) stack.Peek ();
  74                                 parent.AddChild (newel);
  75                         }
  76                         stack.Push (newel);
  77                         current = newel;
  78                         // attributes
  79                         int n = attrs.Length;
  80                         for (int i=0; i < n; i++)
  81                                 current.AddAttribute (attrs.GetName (i), attrs.GetValue (i));
  82                 }
  83
  84                 public void OnEndElement (string name)
  85                 {
  86                         current = (SecurityElement) stack.Pop ();
  87                 }
  88
  89                 public void OnChars (string ch)
  90                 {
  91                         current.Text = ch;
  92                 }
  93
  94                 public void OnEndParsing (MiniParser parser) {}
  95         }
  96 }