106 lines
3.1 KiB
C#
106 lines
3.1 KiB
C#
|
//
|
||
|
|
// XslChoose.cs
|
||
|
|
//
|
||
|
|
// Authors:
|
||
|
|
// Ben Maurer (bmaurer@users.sourceforge.net)
|
||
|
|
// Atsushi Enomoto (ginga@kit.hi-ho.ne.jp)
|
||
|
|
//
|
||
|
|
// (C) 2003 Ben Maurer
|
||
|
|
// (C) 2003 Atsushi Enomoto
|
||
|
|
//
|
||
|
|
|
||
|
|
//
|
||
|
|
// Permission is hereby granted, free of charge, to any person obtaining
|
||
|
|
// a copy of this software and associated documentation files (the
|
||
|
|
// "Software"), to deal in the Software without restriction, including
|
||
|
|
// without limitation the rights to use, copy, modify, merge, publish,
|
||
|
|
// distribute, sublicense, and/or sell copies of the Software, and to
|
||
|
|
// permit persons to whom the Software is furnished to do so, subject to
|
||
|
|
// the following conditions:
|
||
|
|
//
|
||
|
|
// The above copyright notice and this permission notice shall be
|
||
|
|
// included in all copies or substantial portions of the Software.
|
||
|
|
//
|
||
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||
|
|
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||
|
|
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||
|
|
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
||
|
|
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
||
|
|
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
||
|
|
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||
|
|
//
|
||
|
|
|
||
|
|
using System;
|
||
|
|
using System.Collections;
|
||
|
|
using System.Xml;
|
||
|
|
using System.Xml.XPath;
|
||
|
|
using System.Xml.Xsl;
|
||
|
|
|
||
|
|
namespace Mono.Xml.Xsl.Operations {
|
||
|
|
internal class XslChoose : XslCompiledElement {
|
||
|
|
XslOperation defaultChoice = null;
|
||
|
|
ArrayList conditions = new ArrayList ();
|
||
|
|
|
||
|
|
public XslChoose (Compiler c) : base (c) {}
|
||
|
|
|
||
|
|
protected override void Compile (Compiler c)
|
||
|
|
{
|
||
|
|
if (c.Debugger != null)
|
||
|
|
c.Debugger.DebugCompile (c.Input);
|
||
|
|
|
||
|
|
c.CheckExtraAttributes ("choose");
|
||
|
|
|
||
|
|
if (!c.Input.MoveToFirstChild ())
|
||
|
|
throw new XsltCompileException ("Expecting non-empty element", null, c.Input);
|
||
|
|
|
||
|
|
do {
|
||
|
|
if (c.Input.NodeType != XPathNodeType.Element) continue;
|
||
|
|
if (c.Input.NamespaceURI != XsltNamespace) continue;
|
||
|
|
|
||
|
|
if (defaultChoice != null)
|
||
|
|
throw new XsltCompileException ("otherwise attribute must be last", null, c.Input);
|
||
|
|
|
||
|
|
switch (c.Input.LocalName) {
|
||
|
|
case "when":
|
||
|
|
conditions.Add (new XslIf (c));
|
||
|
|
break;
|
||
|
|
|
||
|
|
case "otherwise":
|
||
|
|
c.CheckExtraAttributes ("otherwise");
|
||
|
|
if (c.Input.MoveToFirstChild ()) {
|
||
|
|
defaultChoice = c.CompileTemplateContent ();
|
||
|
|
c.Input.MoveToParent ();
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
if (c.CurrentStylesheet.Version == "1.0")
|
||
|
|
throw new XsltCompileException ("XSLT choose element accepts only when and otherwise elements", null, c.Input);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
} while (c.Input.MoveToNext ());
|
||
|
|
|
||
|
|
c.Input.MoveToParent ();
|
||
|
|
|
||
|
|
if (conditions.Count == 0)
|
||
|
|
throw new XsltCompileException ("Choose must have 1 or more when elements", null, c.Input);
|
||
|
|
}
|
||
|
|
|
||
|
|
public override void Evaluate (XslTransformProcessor p)
|
||
|
|
{
|
||
|
|
if (p.Debugger != null)
|
||
|
|
p.Debugger.DebugExecute (p, this.DebugInput);
|
||
|
|
|
||
|
|
int len = conditions.Count;
|
||
|
|
for (int i = 0; i < len; i++) {
|
||
|
|
if (((XslIf)conditions [i]).EvaluateIfTrue (p))
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (defaultChoice != null)
|
||
|
|
defaultChoice.Evaluate (p);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|