mcs/class/System.XML/Mono.Xml.Xsl.Operations/XslProcessingInstruction.cs

   1 //
   2 // XslProcessingInstruction.cs
   3 //
   4 // Authors:
   5 //      Ben Maurer (bmaurer@users.sourceforge.net)
   6 //      Atsushi Enomoto (ginga@kit.hi-ho.ne.jp)
   7 //
   8 // (C) 2003 Ben Maurer
   9 // (C) 2003 Atsushi Enomoto
  10 //
  11
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System;
  34 using System.Collections;
  35 using System.Globalization;
  36 using System.Xml;
  37 using System.Xml.XPath;
  38 using System.Xml.Xsl;
  39 using System.IO;
  40
  41 namespace Mono.Xml.Xsl.Operations {
  42         internal class XslProcessingInstruction : XslCompiledElement {
  43                 XslAvt name;
  44                 XslOperation value;
  45
  46                 public XslProcessingInstruction (Compiler c) : base (c) {}
  47
  48                 protected override void Compile (Compiler c)
  49                 {
  50                         name = c.ParseAvtAttribute ("name");
  51
  52                         if (c.Input.MoveToFirstAttribute ()) {
  53                                 do {
  54                                         if (c.Input.NamespaceURI == String.Empty && c.Input.LocalName != "name")
  55                                                 throw new XsltCompileException ("Invalid attribute \"" + c.Input.Name + "\"", null, c.Input);
  56                                 } while (c.Input.MoveToNextAttribute ());
  57                                 c.Input.MoveToParent ();
  58                         }
  59
  60                         if (!c.Input.MoveToFirstChild ()) return;
  61
  62                         value = c.CompileTemplateContent (XPathNodeType.ProcessingInstruction);
  63                         c.Input.MoveToParent ();
  64                 }
  65
  66                 public override void Evaluate (XslTransformProcessor p)
  67                 {
  68                         StringWriter s = new StringWriter ();
  69                         Outputter outputter = new TextOutputter(s, true);
  70                         p.PushOutput (outputter);
  71                         value.Evaluate (p);
  72                         p.PopOutput ();
  73
  74                         string actualName = name.Evaluate (p);
  75                         if (String.Compare (actualName, "xml", true, CultureInfo.InvariantCulture) == 0)
  76                                 throw new XsltException ("Processing instruction name was evaluated to \"xml\"", null, p.CurrentNode);
  77                         p.Out.WriteProcessingInstruction (actualName, s.ToString ());
  78                 }
  79         }
  80 }