mcs/class/corlib/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         public class SecurityParser : MiniParser, MiniParser.IHandler, MiniParser.IReader {
  18
  19                 private SecurityElement root;
  20
  21                 public SecurityParser () : base ()
  22                 {
  23                         stack = new Stack ();
  24                 }
  25
  26                 public void LoadXml (string xml)
  27                 {
  28                         root = null;
  29                         xmldoc = xml;
  30                         pos = 0;
  31                         stack.Clear ();
  32                         Parse (this, this);
  33                 }
  34
  35                 public SecurityElement ToXml ()
  36                 {
  37                         return root;
  38                 }
  39
  40                 // IReader
  41
  42                 private string xmldoc;
  43                 private int pos;
  44
  45                 public int Read ()
  46                 {
  47                         if (pos >= xmldoc.Length)
  48                                 return -1;
  49                         return (int) xmldoc [pos++];
  50                 }
  51
  52                 // IHandler
  53
  54                 private SecurityElement current;
  55                 private Stack stack;
  56
  57                 public void OnStartParsing (MiniParser parser) {}
  58
  59                 public void OnStartElement (string name, MiniParser.IAttrList attrs)
  60                 {
  61                         SecurityElement newel = new SecurityElement (name);
  62                         if (root == null) {
  63                                 root = newel;
  64                                 current = newel;
  65                         }
  66                         else {
  67                                 SecurityElement parent = (SecurityElement) stack.Peek ();
  68                                 parent.AddChild (newel);
  69                         }
  70                         stack.Push (newel);
  71                         current = newel;
  72                         // attributes
  73                         int n = attrs.Length;
  74                         for (int i=0; i < n; i++)
  75                                 current.AddAttribute (attrs.GetName (i), attrs.GetValue (i));
  76                 }
  77
  78                 public void OnEndElement (string name)
  79                 {
  80                         current = (SecurityElement) stack.Pop ();
  81                 }
  82
  83                 public void OnChars (string ch)
  84                 {
  85                         current.Text = ch;
  86                 }
  87
  88                 public void OnEndParsing (MiniParser parser) {}
  89         }
  90 }