org.eclipse.jdt.internal.core.JarPackageFragment Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2000, 2014 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.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.Path;
import org.eclipse.jdt.core.IClassFile;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IJarEntryResource;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IJavaModelStatusConstants;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.internal.core.util.Util;
/**
* A package fragment that represents a package fragment found in a JAR.
*
* @see org.eclipse.jdt.core.IPackageFragment
*/
@SuppressWarnings({ "rawtypes", "unchecked" })
class JarPackageFragment extends PackageFragment {
/**
* Constructs a package fragment that is contained within a jar or a zip.
*/
protected JarPackageFragment(PackageFragmentRoot root, String[] names) {
super(root, names);
}
/**
* @see Openable
*/
protected boolean buildStructure(OpenableElementInfo info, IProgressMonitor pm, Map newElements, IResource underlyingResource) throws JavaModelException {
JarPackageFragmentRoot root = (JarPackageFragmentRoot) getParent();
JarPackageFragmentRootInfo parentInfo = (JarPackageFragmentRootInfo) root.getElementInfo();
ArrayList[] entries = (ArrayList[]) parentInfo.rawPackageInfo.get(this.names);
if (entries == null)
throw newNotPresentException();
JarPackageFragmentInfo fragInfo = (JarPackageFragmentInfo) info;
// compute children
fragInfo.setChildren(computeChildren(entries[0/*class files*/]));
// compute non-Java resources
fragInfo.setNonJavaResources(computeNonJavaResources(entries[1/*non Java resources*/]));
newElements.put(this, fragInfo);
return true;
}
/**
* Compute the children of this package fragment. Children of jar package fragments
* can only be IClassFile (representing .class files).
*/
private IJavaElement[] computeChildren(ArrayList namesWithoutExtension) {
int size = namesWithoutExtension.size();
if (size == 0)
return NO_ELEMENTS;
IJavaElement[] children = new IJavaElement[size];
for (int i = 0; i < size; i++) {
String nameWithoutExtension = (String) namesWithoutExtension.get(i);
children[i] = new ClassFile(this, nameWithoutExtension);
}
return children;
}
/**
* Compute all the non-java resources according to the given entry names.
*/
private Object[] computeNonJavaResources(ArrayList entryNames) {
int length = entryNames.size();
if (length == 0)
return JavaElementInfo.NO_NON_JAVA_RESOURCES;
HashMap jarEntries = new HashMap(); // map from IPath to IJarEntryResource
HashMap childrenMap = new HashMap(); // map from IPath to ArrayList
ArrayList topJarEntries = new ArrayList();
for (int i = 0; i < length; i++) {
String resName = (String) entryNames.get(i);
// consider that a .java file is not a non-java resource (see bug 12246 Packages view shows .class and .java files when JAR has source)
if (!Util.isJavaLikeFileName(resName)) {
IPath filePath = new Path(resName);
IPath childPath = filePath.removeFirstSegments(this.names.length);
if (jarEntries.containsKey(childPath)) {
// see https://bugs.eclipse.org/bugs/show_bug.cgi?id=222665
continue;
}
JarEntryFile file = new JarEntryFile(filePath.lastSegment());
jarEntries.put(childPath, file);
if (childPath.segmentCount() == 1) {
file.setParent(this);
topJarEntries.add(file);
} else {
IPath parentPath = childPath.removeLastSegments(1);
while (parentPath.segmentCount() > 0) {
ArrayList parentChildren = (ArrayList) childrenMap.get(parentPath);
if (parentChildren == null) {
Object dir = new JarEntryDirectory(parentPath.lastSegment());
jarEntries.put(parentPath, dir);
childrenMap.put(parentPath, parentChildren = new ArrayList());
parentChildren.add(childPath);
if (parentPath.segmentCount() == 1) {
topJarEntries.add(dir);
break;
}
childPath = parentPath;
parentPath = childPath.removeLastSegments(1);
} else {
parentChildren.add(childPath);
break; // all parents are already registered
}
}
}
}
}
Iterator entries = childrenMap.entrySet().iterator();
while (entries.hasNext()) {
Map.Entry entry = (Map.Entry) entries.next();
IPath entryPath = (IPath) entry.getKey();
ArrayList entryValue = (ArrayList) entry.getValue();
JarEntryDirectory jarEntryDirectory = (JarEntryDirectory) jarEntries.get(entryPath);
int size = entryValue.size();
IJarEntryResource[] children = new IJarEntryResource[size];
for (int i = 0; i < size; i++) {
JarEntryResource child = (JarEntryResource) jarEntries.get(entryValue.get(i));
child.setParent(jarEntryDirectory);
children[i] = child;
}
jarEntryDirectory.setChildren(children);
if (entryPath.segmentCount() == 1) {
jarEntryDirectory.setParent(this);
}
}
return topJarEntries.toArray(new Object[topJarEntries.size()]);
}
/**
* Returns true if this fragment contains at least one java resource.
* Returns false otherwise.
*/
public boolean containsJavaResources() throws JavaModelException {
return ((JarPackageFragmentInfo) getElementInfo()).containsJavaResources();
}
/**
* @see org.eclipse.jdt.core.IPackageFragment
*/
public ICompilationUnit createCompilationUnit(String cuName, String contents, boolean force, IProgressMonitor monitor) throws JavaModelException {
throw new JavaModelException(new JavaModelStatus(IJavaModelStatusConstants.READ_ONLY, this));
}
/**
* @see JavaElement
*/
protected Object createElementInfo() {
return new JarPackageFragmentInfo();
}
/**
* @see org.eclipse.jdt.core.IPackageFragment
*/
public IClassFile[] getClassFiles() throws JavaModelException {
ArrayList list = getChildrenOfType(CLASS_FILE);
IClassFile[] array= new IClassFile[list.size()];
list.toArray(array);
return array;
}
/**
* A jar package fragment never contains compilation units.
* @see org.eclipse.jdt.core.IPackageFragment
*/
public ICompilationUnit[] getCompilationUnits() {
return NO_COMPILATION_UNITS;
}
/**
* A package fragment in a jar has no corresponding resource.
*
* @see IJavaElement
*/
public IResource getCorrespondingResource() {
return null;
}
/**
* Returns an array of non-java resources contained in the receiver.
*/
public Object[] getNonJavaResources() throws JavaModelException {
if (isDefaultPackage()) {
// We don't want to show non java resources of the default package (see PR #1G58NB8)
return JavaElementInfo.NO_NON_JAVA_RESOURCES;
} else {
return storedNonJavaResources();
}
}
protected boolean internalIsValidPackageName() {
return true;
}
/**
* Jars and jar entries are all read only
*/
public boolean isReadOnly() {
return true;
}
protected Object[] storedNonJavaResources() throws JavaModelException {
return ((JarPackageFragmentInfo) getElementInfo()).getNonJavaResources();
}
}