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/*******************************************************************************
* Copyright (c) 2005, 2007 committers of openArchitectureWare 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:
* committers of openArchitectureWare - initial API and implementation
*******************************************************************************/
package org.eclipse.xtend.shared.ui.core.internal;
import java.util.regex.Pattern;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IStorage;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.debug.core.sourcelookup.containers.ZipEntryStorage;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.internal.core.ExternalPackageFragmentRoot;
import org.eclipse.jdt.internal.core.JarPackageFragmentRoot;
import org.eclipse.xtend.shared.ui.internal.XtendLog;
public class JDTUtil {
private static final Pattern patternNamespace = Pattern.compile("::");
private static final Pattern patternSlash = Pattern.compile("/");
/**
* find the path for the oaw name space and extension
*
* @param project
* - the javaproject
* @param oawns
* - oaw name space (i.e. 'my::xtend::File')
* @param ext
* - file extension (i.e. 'ext')
* @return
*/
@SuppressWarnings("restriction")
public static IStorage findStorage(IJavaProject project, ResourceID id,
boolean searchJars) {
IPath p = path(id);
try {
IPackageFragmentRoot[] roots = project.getPackageFragmentRoots();
for (int i = 0; i < roots.length; i++) {
IPackageFragmentRoot root = roots[i];
if (!root.isArchive()) {
IFolder rootFolder = null;
IResource correspondingResource = root
.getCorrespondingResource();
if (correspondingResource instanceof IFolder) {
rootFolder = (IFolder) correspondingResource;
} else if (root instanceof ExternalPackageFragmentRoot) {
IResource resource = ((ExternalPackageFragmentRoot) root)
.resource();
if (resource instanceof IFolder) {
rootFolder = (IFolder) resource;
IStorage member = (IStorage) rootFolder.findMember(p);
if(member != null) {
return member;
}
}
}
if (rootFolder != null) {
IResource r = project.getProject().findMember(
rootFolder.getProjectRelativePath().append(p));
if (r instanceof IFile)
return (IFile) r;
}
} else if (searchJars) {
IStorage storage = loadFromJar(id, root);
if (storage != null)
return storage;
}
}
} catch (JavaModelException e) {
XtendLog.logInfo(e);
}
return null;
}
@SuppressWarnings("restriction")
public static IStorage loadFromJar(ResourceID id, IPackageFragmentRoot root)
throws JavaModelException {
if (root instanceof JarPackageFragmentRoot) {
JarPackageFragmentRoot jar = (JarPackageFragmentRoot) root;
ZipFile zipFile;
try {
zipFile = jar.getJar();
} catch (CoreException e) {
XtendLog.logError(e);
return null;
}
ZipEntry entry = zipFile.getEntry(id.toFileName());
if (entry != null && zipFile != null) {
return new ZipEntryStorage(zipFile, entry);
}
}
return null;
}
public static ResourceID findOawResourceID(IJavaProject project,
IStorage file) {
if (file == null)
return null;
try {
IPackageFragmentRoot[] roots = project.getPackageFragmentRoots();
for (int i = 0; i < roots.length; i++) {
IPackageFragmentRoot root = roots[i];
if (root.getPath().isPrefixOf(file.getFullPath())) {
IPath shortOne = file.getFullPath().removeFirstSegments(
root.getPath().segmentCount());
String ns = shortOne.removeFileExtension().toString();
ns = patternSlash.matcher(ns).replaceAll("::");
return new ResourceID(ns, shortOne.getFileExtension());
}
}
} catch (JavaModelException e1) {
XtendLog.logInfo(e1);
}
return null;
}
public static IJavaProject getJProject(IStorage s) {
if (s instanceof IFile) {
return JavaCore.create(((IFile) s).getProject());
} else {
IProject[] projects = ResourcesPlugin.getWorkspace().getRoot()
.getProjects();
for (int i = 0; i < projects.length; i++) {
IProject project = projects[i];
IJavaProject p = JavaCore.create(project);
if (p.exists()) {
IPackageFragmentRoot[] roots;
try {
roots = p.getPackageFragmentRoots();
for (int j = 0; j < roots.length; j++) {
IPackageFragmentRoot root = roots[j];
if (root.getPath().isPrefixOf(s.getFullPath()))
return p;
}
} catch (JavaModelException e) {
XtendLog.logError(e);
}
}
}
}
return null;
}
private static IPath path(ResourceID id) {
return new Path(patternNamespace.matcher(id.name).replaceAll("/") + "."
+ id.extension);
}
public static String getQualifiedName(IStorage source) {
ResourceID id = findOawResourceID(getJProject(source), source);
if (id != null)
return id.name;
return null;
}
}
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