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   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 net.sourceforge.phpdt.core.ICompilationUnit;
  17 import net.sourceforge.phpdt.core.IJavaElement;
  18 import net.sourceforge.phpdt.core.IMember;
  19 import net.sourceforge.phpdt.core.IOpenable;
  20 import net.sourceforge.phpdt.internal.corext.Assert;
  21
  22 import org.eclipse.core.resources.IFile;
  23 import org.eclipse.core.resources.IResource;
  24
  25 public class ResourceUtil {
  26
  27         private ResourceUtil() {
  28         }
  29
  30         public static IFile[] getFiles(ICompilationUnit[] cus) {
  31                 List files = new ArrayList(cus.length);
  32                 for (int i = 0; i < cus.length; i++) {
  33                         IResource resource = ResourceUtil.getResource(cus[i]);
  34                         if (resource != null && resource.getType() == IResource.FILE)
  35                                 files.add(resource);
  36                 }
  37                 return (IFile[]) files.toArray(new IFile[files.size()]);
  38         }
  39
  40         public static IFile getFile(ICompilationUnit cu) {
  41                 IResource resource = ResourceUtil.getResource(cu);
  42                 if (resource != null && resource.getType() == IResource.FILE)
  43                         return (IFile) resource;
  44                 else
  45                         return null;
  46         }
  47
  48         // ----- other ------------------------------
  49
  50         /**
  51          * Finds an <code>IResource</code> for a given
  52          * <code>ICompilationUnit</code>. If the parameter is a working copy then
  53          * the <code>IResource</code> for the original element is returned.
  54          */
  55         public static IResource getResource(ICompilationUnit cu) {
  56                 return cu.getResource();
  57         }
  58
  59         /**
  60          * Returns the <code>IResource</code> that the given <code>IMember</code>
  61          * is defined in.
  62          *
  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 }