net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/corext/refactoring/util/ResourceUtil.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2004 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package net.sourceforge.phpdt.internal.corext.refactoring.util;
  12
  13 import java.util.ArrayList;
  14 import java.util.List;
  15
  16 import org.eclipse.core.resources.IFile;
  17 import org.eclipse.core.resources.IResource;
  18
  19 import net.sourceforge.phpdt.core.ICompilationUnit;
  20 import net.sourceforge.phpdt.core.IJavaElement;
  21 import net.sourceforge.phpdt.core.IMember;
  22 import net.sourceforge.phpdt.core.IOpenable;
  23
  24 import net.sourceforge.phpdt.internal.corext.Assert;
  25
  26 public class ResourceUtil {
  27
  28         private ResourceUtil(){
  29         }
  30
  31         public static IFile[] getFiles(ICompilationUnit[] cus) {
  32                 List files= new ArrayList(cus.length);
  33                 for (int i= 0; i < cus.length; i++) {
  34                         IResource resource= ResourceUtil.getResource(cus[i]);
  35                         if (resource != null && resource.getType() == IResource.FILE)
  36                                 files.add(resource);
  37                 }
  38                 return (IFile[]) files.toArray(new IFile[files.size()]);
  39         }
  40
  41         public static IFile getFile(ICompilationUnit cu) {
  42                 IResource resource= ResourceUtil.getResource(cu);
  43                 if (resource != null && resource.getType() == IResource.FILE)
  44                         return (IFile)resource;
  45                 else
  46                         return null;
  47         }
  48
  49         //----- other ------------------------------
  50
  51         /**
  52          * Finds an <code>IResource</code> for a given <code>ICompilationUnit</code>.
  53          * If the parameter is a working copy then the <code>IResource</code> for
  54          * the original element is returned.
  55          */
  56         public static IResource getResource(ICompilationUnit cu) {
  57                 return cu.getResource();
  58         }
  59
  60
  61         /**
  62          * Returns the <code>IResource</code> that the given <code>IMember</code> is defined in.
  63          * @see #getResource
  64          */
  65         public static IResource getResource(IMember member) {
  66                 Assert.isTrue(!member.isBinary());
  67                 return getResource(member.getCompilationUnit());
  68         }
  69
  70         public static IResource getResource(Object o){
  71                 if (o instanceof IResource)
  72                         return (IResource)o;
  73                 if (o instanceof IJavaElement)
  74                         return getResource((IJavaElement)o);
  75                 return null;
  76         }
  77
  78         private static IResource getResource(IJavaElement element){
  79                 if (element.getElementType() == IJavaElement.COMPILATION_UNIT)
  80                         return getResource((ICompilationUnit) element);
  81                 else if (element instanceof IOpenable)
  82                         return element.getResource();
  83                 else
  84                         return null;
  85         }
  86 }