144 lines
4.3 KiB
C#
144 lines
4.3 KiB
C#
//
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// XslAttribute.cs
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//
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// Authors:
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// Ben Maurer (bmaurer@users.sourceforge.net)
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// Atsushi Enomoto (ginga@kit.hi-ho.ne.jp)
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//
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// (C) 2003 Ben Maurer
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// (C) 2003 Atsushi Enomoto
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//
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Collections;
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using System.Xml;
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using System.Xml.XPath;
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using System.Xml.Xsl;
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using System.IO;
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using QName = System.Xml.XmlQualifiedName;
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namespace Mono.Xml.Xsl.Operations {
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internal class XslAttribute : XslCompiledElement {
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XslAvt name, ns;
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string calcName, calcNs, calcPrefix;
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// XmlNamespaceManager nsm;
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Hashtable nsDecls;
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XslOperation value;
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public XslAttribute (Compiler c) : base (c) {}
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protected override void Compile (Compiler c)
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{
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if (c.Debugger != null)
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c.Debugger.DebugCompile (c.Input);
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XPathNavigator nav = c.Input.Clone ();
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nsDecls = c.GetNamespacesToCopy ();
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c.CheckExtraAttributes ("attribute", "name", "namespace");
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name = c.ParseAvtAttribute ("name");
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if (name == null)
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throw new XsltCompileException ("Attribute \"name\" is required on XSLT attribute element", null, c.Input);
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ns = c.ParseAvtAttribute ("namespace");
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calcName = XslAvt.AttemptPreCalc (ref name);
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calcPrefix = String.Empty;
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if (calcName != null) {
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int colonAt = calcName.IndexOf (':');
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calcPrefix = colonAt < 0 ? String.Empty : calcName.Substring (0, colonAt);
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calcName = colonAt < 0 ? calcName : calcName.Substring (colonAt + 1, calcName.Length - colonAt - 1);
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try {
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XmlConvert.VerifyNCName (calcName);
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if (calcPrefix != String.Empty)
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XmlConvert.VerifyNCName (calcPrefix);
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} catch (XmlException ex) {
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throw new XsltCompileException ("Invalid attribute name", ex, c.Input);
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}
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}
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if (calcPrefix != String.Empty) {
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calcPrefix = c.CurrentStylesheet.GetActualPrefix (calcPrefix);
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if (calcPrefix == null)
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calcPrefix = String.Empty;
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}
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if (calcPrefix != String.Empty && ns == null)
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calcNs = nav.GetNamespace (calcPrefix);
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else if (ns != null)
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calcNs = XslAvt.AttemptPreCalc (ref ns);
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if (c.Input.MoveToFirstChild ()) {
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value = c.CompileTemplateContent (XPathNodeType.Attribute);
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c.Input.MoveToParent ();
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}
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}
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public override void Evaluate (XslTransformProcessor p)
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{
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if (p.Debugger != null)
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p.Debugger.DebugExecute (p, this.DebugInput);
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string nm, nmsp, prefix;
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nm = calcName != null ? calcName : name.Evaluate (p);
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nmsp = calcNs != null ? calcNs : ns != null ? ns.Evaluate (p) : String.Empty;
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prefix = calcPrefix != null ? calcPrefix : String.Empty;
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if (nm == "xmlns")
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// It is an error. We must recover by not emmiting any attributes
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// (unless we throw an exception).
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return;
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int colonAt = nm.IndexOf (':');
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// local attribute
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if (colonAt > 0) {
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prefix = nm.Substring (0, colonAt);
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nm = nm.Substring (colonAt + 1);
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// global attribute
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if (nmsp == String.Empty &&
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prefix == XmlNamespaceManager.PrefixXml)
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nmsp = XmlNamespaceManager.XmlnsXml;
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else if (nmsp == String.Empty) {
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nmsp = (string) nsDecls [prefix];
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if (nmsp == null)
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nmsp = String.Empty;
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}
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}
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if (prefix == "xmlns")
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prefix = String.Empty; // Should not be allowed.
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XmlConvert.VerifyName (nm);
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p.Out.WriteAttributeString (prefix, nm, nmsp,
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value == null ? "" : value.EvaluateAsString (p));
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}
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}
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}
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