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//
// XslAttribute.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;
using System.IO;
using QName = System.Xml.XmlQualifiedName;
namespace Mono.Xml.Xsl.Operations {
internal class XslAttribute : XslCompiledElement {
XslAvt name, ns;
string calcName, calcNs, calcPrefix;
// XmlNamespaceManager nsm;
Hashtable nsDecls;
XslOperation value;
public XslAttribute (Compiler c) : base (c) {}
protected override void Compile (Compiler c)
{
if (c.Debugger != null)
c.Debugger.DebugCompile (c.Input);
XPathNavigator nav = c.Input.Clone ();
nsDecls = c.GetNamespacesToCopy ();
c.CheckExtraAttributes ("attribute", "name", "namespace");
name = c.ParseAvtAttribute ("name");
if (name == null)
throw new XsltCompileException ("Attribute \"name\" is required on XSLT attribute element", null, c.Input);
ns = c.ParseAvtAttribute ("namespace");
calcName = XslAvt.AttemptPreCalc (ref name);
calcPrefix = String.Empty;
if (calcName != null) {
int colonAt = calcName.IndexOf (':');
calcPrefix = colonAt < 0 ? String.Empty : calcName.Substring (0, colonAt);
calcName = colonAt < 0 ? calcName : calcName.Substring (colonAt + 1, calcName.Length - colonAt - 1);
try {
XmlConvert.VerifyNCName (calcName);
if (calcPrefix != String.Empty)
XmlConvert.VerifyNCName (calcPrefix);
} catch (XmlException ex) {
throw new XsltCompileException ("Invalid attribute name", ex, c.Input);
}
}
if (calcPrefix != String.Empty) {
calcPrefix = c.CurrentStylesheet.GetActualPrefix (calcPrefix);
if (calcPrefix == null)
calcPrefix = String.Empty;
}
if (calcPrefix != String.Empty && ns == null)
calcNs = nav.GetNamespace (calcPrefix);
else if (ns != null)
calcNs = XslAvt.AttemptPreCalc (ref ns);
if (c.Input.MoveToFirstChild ()) {
value = c.CompileTemplateContent (XPathNodeType.Attribute);
c.Input.MoveToParent ();
}
}
public override void Evaluate (XslTransformProcessor p)
{
if (p.Debugger != null)
p.Debugger.DebugExecute (p, this.DebugInput);
string nm, nmsp, prefix;
nm = calcName != null ? calcName : name.Evaluate (p);
nmsp = calcNs != null ? calcNs : ns != null ? ns.Evaluate (p) : String.Empty;
prefix = calcPrefix != null ? calcPrefix : String.Empty;
if (nm == "xmlns")
// It is an error. We must recover by not emmiting any attributes
// (unless we throw an exception).
return;
int colonAt = nm.IndexOf (':');
// local attribute
if (colonAt > 0) {
prefix = nm.Substring (0, colonAt);
nm = nm.Substring (colonAt + 1);
// global attribute
if (nmsp == String.Empty &&
prefix == XmlNamespaceManager.PrefixXml)
nmsp = XmlNamespaceManager.XmlnsXml;
else if (nmsp == String.Empty) {
nmsp = (string) nsDecls [prefix];
if (nmsp == null)
nmsp = String.Empty;
}
}
if (prefix == "xmlns")
prefix = String.Empty; // Should not be allowed.
XmlConvert.VerifyName (nm);
p.Out.WriteAttributeString (prefix, nm, nmsp,
value == null ? "" : value.EvaluateAsString (p));
}
}
}
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