1. /*
  2. * Copyright 1999-2004 The Apache Software Foundation.
  3. *
  4. * Licensed under the Apache License, Version 2.0 (the "License");
  5. * you may not use this file except in compliance with the License.
  6. * You may obtain a copy of the License at
  7. *
  8. * http://www.apache.org/licenses/LICENSE-2.0
  9. *
  10. * Unless required by applicable law or agreed to in writing, software
  11. * distributed under the License is distributed on an "AS IS" BASIS,
  12. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13. * See the License for the specific language governing permissions and
  14. * limitations under the License.
  15. */
  16. /*
  17. * $Id: FuncSubstringAfter.java,v 1.8 2004/02/17 04:34:00 minchau Exp $
  18. */
  19. package com.sun.org.apache.xpath.internal.functions;
  20. import com.sun.org.apache.xml.internal.utils.XMLString;
  21. import com.sun.org.apache.xpath.internal.XPathContext;
  22. import com.sun.org.apache.xpath.internal.objects.XObject;
  23. import com.sun.org.apache.xpath.internal.objects.XString;
  24. /**
  25. * Execute the SubstringAfter() function.
  26. * @xsl.usage advanced
  27. */
  28. public class FuncSubstringAfter extends Function2Args
  29. {
  30. /**
  31. * Execute the function. The function must return
  32. * a valid object.
  33. * @param xctxt The current execution context.
  34. * @return A valid XObject.
  35. *
  36. * @throws javax.xml.transform.TransformerException
  37. */
  38. public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
  39. {
  40. XMLString s1 = m_arg0.execute(xctxt).xstr();
  41. XMLString s2 = m_arg1.execute(xctxt).xstr();
  42. int index = s1.indexOf(s2);
  43. return (-1 == index)
  44. ? XString.EMPTYSTRING
  45. : (XString)s1.substring(index + s2.length());
  46. }
  47. }