| /******************************************************************************* |
| * Copyright (c) 2000, 2004 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.core; |
| |
| import java.util.*; |
| import java.util.zip.ZipEntry; |
| import java.util.zip.ZipFile; |
| |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.resources.ResourcesPlugin; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.jdt.core.*; |
| import org.eclipse.jdt.core.compiler.CharOperation; |
| import org.eclipse.jdt.internal.core.util.HashtableOfArrayToObject; |
| import org.eclipse.jdt.internal.core.util.Util; |
| |
| /** |
| * A package fragment root that corresponds to a .jar or .zip. |
| * |
| * <p>NOTE: The only visible entries from a .jar or .zip package fragment root |
| * are .class files. |
| * <p>NOTE: A jar package fragment root may or may not have an associated resource. |
| * |
| * @see org.eclipse.jdt.core.IPackageFragmentRoot |
| * @see org.eclipse.jdt.internal.core.JarPackageFragmentRootInfo |
| */ |
| public class JarPackageFragmentRoot extends PackageFragmentRoot { |
| |
| public final static ArrayList EMPTY_LIST = new ArrayList(); |
| |
| /** |
| * The path to the jar file |
| * (a workspace relative path if the jar is internal, |
| * or an OS path if the jar is external) |
| */ |
| protected final IPath jarPath; |
| |
| /** |
| * Constructs a package fragment root which is the root of the Java package directory hierarchy |
| * based on a JAR file that is not contained in a <code>IJavaProject</code> and |
| * does not have an associated <code>IResource</code>. |
| */ |
| protected JarPackageFragmentRoot(IPath jarPath, JavaProject project) { |
| super(null, project); |
| this.jarPath = jarPath; |
| } |
| /** |
| * Constructs a package fragment root which is the root of the Java package directory hierarchy |
| * based on a JAR file. |
| */ |
| protected JarPackageFragmentRoot(IResource resource, JavaProject project) { |
| super(resource, project); |
| this.jarPath = resource.getFullPath(); |
| } |
| |
| /** |
| * Compute the package fragment children of this package fragment root. |
| * These are all of the directory zip entries, and any directories implied |
| * by the path of class files contained in the jar of this package fragment root. |
| * Has the side effect of opening the package fragment children. |
| */ |
| protected boolean computeChildren(OpenableElementInfo info, Map newElements) throws JavaModelException { |
| |
| ArrayList vChildren= new ArrayList(); |
| final int JAVA = 0; |
| final int NON_JAVA = 1; |
| ZipFile jar= null; |
| try { |
| jar= getJar(); |
| |
| HashtableOfArrayToObject packageFragToTypes= new HashtableOfArrayToObject(); |
| |
| // always create the default package |
| packageFragToTypes.put(CharOperation.NO_STRINGS, new ArrayList[] { EMPTY_LIST, EMPTY_LIST }); |
| |
| for (Enumeration e= jar.entries(); e.hasMoreElements();) { |
| ZipEntry member= (ZipEntry) e.nextElement(); |
| String entryName= member.getName(); |
| |
| if (member.isDirectory()) { |
| |
| initPackageFragToTypes(packageFragToTypes, entryName, entryName.length()-1); |
| } else { |
| //store the class file / non-java rsc entry name to be cached in the appropriate package fragment |
| //zip entries only use '/' |
| int lastSeparator= entryName.lastIndexOf('/'); |
| String fileName= entryName.substring(lastSeparator + 1); |
| String[] pkgName = initPackageFragToTypes(packageFragToTypes, entryName, lastSeparator); |
| |
| // add classfile info amongst children |
| ArrayList[] children = (ArrayList[]) packageFragToTypes.get(pkgName); |
| if (org.eclipse.jdt.internal.compiler.util.Util.isClassFileName(entryName)) { |
| if (children[JAVA] == EMPTY_LIST) children[JAVA] = new ArrayList(); |
| children[JAVA].add(fileName); |
| } else { |
| if (children[NON_JAVA] == EMPTY_LIST) children[NON_JAVA] = new ArrayList(); |
| children[NON_JAVA].add(fileName); |
| } |
| } |
| } |
| //loop through all of referenced packages, creating package fragments if necessary |
| // and cache the entry names in the infos created for those package fragments |
| for (int i = 0, length = packageFragToTypes.keyTable.length; i < length; i++) { |
| String[] pkgName = (String[]) packageFragToTypes.keyTable[i]; |
| if (pkgName == null) continue; |
| |
| ArrayList[] entries= (ArrayList[]) packageFragToTypes.get(pkgName); |
| JarPackageFragment packFrag= (JarPackageFragment) getPackageFragment(pkgName); |
| JarPackageFragmentInfo fragInfo= new JarPackageFragmentInfo(); |
| int resLength= entries[NON_JAVA].size(); |
| if (resLength == 0) { |
| packFrag.computeNonJavaResources(CharOperation.NO_STRINGS, fragInfo, jar.getName()); |
| } else { |
| String[] resNames= new String[resLength]; |
| entries[NON_JAVA].toArray(resNames); |
| packFrag.computeNonJavaResources(resNames, fragInfo, jar.getName()); |
| } |
| packFrag.computeChildren(fragInfo, entries[JAVA]); |
| newElements.put(packFrag, fragInfo); |
| vChildren.add(packFrag); |
| } |
| } catch (CoreException e) { |
| if (e instanceof JavaModelException) throw (JavaModelException)e; |
| throw new JavaModelException(e); |
| } finally { |
| JavaModelManager.getJavaModelManager().closeZipFile(jar); |
| } |
| |
| |
| IJavaElement[] children= new IJavaElement[vChildren.size()]; |
| vChildren.toArray(children); |
| info.setChildren(children); |
| return true; |
| } |
| /** |
| * Returns a new element info for this element. |
| */ |
| protected Object createElementInfo() { |
| return new JarPackageFragmentRootInfo(); |
| } |
| /** |
| * A Jar is always K_BINARY. |
| */ |
| protected int determineKind(IResource underlyingResource) { |
| return IPackageFragmentRoot.K_BINARY; |
| } |
| /** |
| * Returns true if this handle represents the same jar |
| * as the given handle. Two jars are equal if they share |
| * the same zip file. |
| * |
| * @see Object#equals |
| */ |
| public boolean equals(Object o) { |
| if (this == o) |
| return true; |
| if (o instanceof JarPackageFragmentRoot) { |
| JarPackageFragmentRoot other= (JarPackageFragmentRoot) o; |
| return this.jarPath.equals(other.jarPath); |
| } |
| return false; |
| } |
| public String getElementName() { |
| return this.jarPath.lastSegment(); |
| } |
| /** |
| * Returns the underlying ZipFile for this Jar package fragment root. |
| * |
| * @exception CoreException if an error occurs accessing the jar |
| */ |
| public ZipFile getJar() throws CoreException { |
| return JavaModelManager.getJavaModelManager().getZipFile(getPath()); |
| } |
| /** |
| * @see IPackageFragmentRoot |
| */ |
| public int getKind() { |
| return IPackageFragmentRoot.K_BINARY; |
| } |
| /** |
| * Returns an array of non-java resources contained in the receiver. |
| */ |
| public Object[] getNonJavaResources() throws JavaModelException { |
| // We want to show non java resources of the default package at the root (see PR #1G58NB8) |
| return ((JarPackageFragment) getPackageFragment(CharOperation.NO_STRINGS)).storedNonJavaResources(); |
| } |
| public PackageFragment getPackageFragment(String[] pkgName) { |
| return new JarPackageFragment(this, pkgName); |
| } |
| /** |
| * @see IPackageFragmentRoot |
| */ |
| public IPath getPath() { |
| if (isExternal()) { |
| return this.jarPath; |
| } else { |
| return super.getPath(); |
| } |
| } |
| public IResource getResource() { |
| if (this.resource == null) { |
| this.resource = JavaModel.getTarget(ResourcesPlugin.getWorkspace().getRoot(), this.jarPath, false); |
| } |
| if (this.resource instanceof IResource) { |
| return super.getResource(); |
| } else { |
| // external jar |
| return null; |
| } |
| } |
| |
| |
| /** |
| * @see IJavaElement |
| */ |
| public IResource getUnderlyingResource() throws JavaModelException { |
| if (isExternal()) { |
| if (!exists()) throw newNotPresentException(); |
| return null; |
| } else { |
| return super.getUnderlyingResource(); |
| } |
| } |
| public int hashCode() { |
| return this.jarPath.hashCode(); |
| } |
| private String[] initPackageFragToTypes(HashtableOfArrayToObject packageFragToTypes, String entryName, int lastSeparator) { |
| String[] pkgName = Util.splitOn('/', entryName, 0, lastSeparator); |
| String[] existing = null; |
| int length = pkgName.length; |
| int existingLength = length; |
| while (existingLength >= 0) { |
| existing = (String[]) packageFragToTypes.getKey(pkgName, existingLength); |
| if (existing != null) break; |
| existingLength--; |
| } |
| JavaModelManager manager = JavaModelManager.getJavaModelManager(); |
| for (int i = existingLength; i < length; i++) { |
| System.arraycopy(existing, 0, existing = new String[i+1], 0, i); |
| existing[i] = manager.intern(pkgName[i]); |
| packageFragToTypes.put(existing, new ArrayList[] { EMPTY_LIST, EMPTY_LIST }); |
| } |
| |
| return existing; |
| } |
| /** |
| * @see IPackageFragmentRoot |
| */ |
| public boolean isArchive() { |
| return true; |
| } |
| /** |
| * @see IPackageFragmentRoot |
| */ |
| public boolean isExternal() { |
| return getResource() == null; |
| } |
| /** |
| * Jars and jar entries are all read only |
| */ |
| public boolean isReadOnly() { |
| return true; |
| } |
| |
| /** |
| * Returns whether the corresponding resource or associated file exists |
| */ |
| protected boolean resourceExists() { |
| if (this.isExternal()) { |
| return |
| JavaModel.getTarget( |
| ResourcesPlugin.getWorkspace().getRoot(), |
| this.getPath(), // don't make the path relative as this is an external archive |
| true) != null; |
| } else { |
| return super.resourceExists(); |
| } |
| } |
| } |