/*******************************************************************************
* Copyright (c) 2000, 2015 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
* Matt Chapman, mpchapman@gmail.com - 89977 Make JDT .java agnostic
*******************************************************************************/
package org.eclipse.wst.jsdt.internal.ui.wizards;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceProxy;
import org.eclipse.core.resources.IResourceProxyVisitor;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.core.runtime.Path;
import org.eclipse.wst.jsdt.core.IIncludePathEntry;
import org.eclipse.wst.jsdt.core.IJavaScriptUnit;
import org.eclipse.wst.jsdt.core.JavaScriptConventions;
import org.eclipse.wst.jsdt.core.JavaScriptCore;
import org.eclipse.wst.jsdt.core.JavaScriptModelException;
import org.eclipse.wst.jsdt.core.ToolFactory;
import org.eclipse.wst.jsdt.core.compiler.IScanner;
import org.eclipse.wst.jsdt.core.compiler.ITerminalSymbols;
import org.eclipse.wst.jsdt.core.compiler.InvalidInputException;
import org.eclipse.wst.jsdt.internal.core.ClasspathEntry;
import org.eclipse.wst.jsdt.internal.core.util.Util;
import org.eclipse.wst.jsdt.ui.PreferenceConstants;
import com.ibm.icu.text.Collator;
public class ClassPathDetector implements IResourceProxyVisitor {
private HashMap fSourceFolders;
private IProject fProject;
private IIncludePathEntry[] fResultClasspath;
private IProgressMonitor fMonitor;
private IPath[] fExclusionPatterns;
private static class CPSorter implements Comparator {
private Collator fCollator= Collator.getInstance();
public int compare(Object o1, Object o2) {
IIncludePathEntry e1= (IIncludePathEntry) o1;
IIncludePathEntry e2= (IIncludePathEntry) o2;
return fCollator.compare(e1.getPath().toString(), e2.getPath().toString());
}
}
public ClassPathDetector(IProject project, IProgressMonitor monitor) throws CoreException {
this(project, monitor, ClasspathEntry.EXCLUDE_NONE);
}
public ClassPathDetector(IProject project, IProgressMonitor monitor,
IPath[] exclusionPatterns) throws CoreException {
fSourceFolders= new HashMap();
fProject= project;
fResultClasspath= null;
fExclusionPatterns = exclusionPatterns;
if (monitor == null) {
monitor = new NullProgressMonitor();
}
detectClasspath(monitor);
}
private char[][] convertPatternsToChars(IPath path, IPath[] patterns) {
int length = patterns.length;
char[][] patternChars = new char[length][];
IPath prefixPath = path.removeTrailingSeparator();
for (int i = 0; i < length; i++) {
patternChars[i] =
prefixPath.append(patterns[i]).toString().toCharArray();
}
return patternChars;
}
/**
* Method detectClasspath.
* @param monitor The progress monitor (not null)
* @throws CoreException
*/
private void detectClasspath(IProgressMonitor monitor) throws CoreException {
try {
monitor.beginTask(NewWizardMessages.ClassPathDetector_operation_description, 4);
fMonitor= monitor;
fProject.accept(this, IResource.NONE);
monitor.worked(1);
ArrayList cpEntries= new ArrayList();
detectSourceFolders(cpEntries);
if (monitor.isCanceled()) {
throw new OperationCanceledException();
}
monitor.worked(1);
if (cpEntries.isEmpty()) {
return;
}
IIncludePathEntry[] jreEntries= PreferenceConstants.getDefaultJRELibrary();
for (int i= 0; i < jreEntries.length; i++) {
cpEntries.add(jreEntries[i]);
}
IIncludePathEntry[] entries= (IIncludePathEntry[]) cpEntries.toArray(new IIncludePathEntry[cpEntries.size()]);
if (!JavaScriptConventions.validateClasspath(JavaScriptCore.create(fProject), entries).isOK()) {
return;
}
fResultClasspath= entries;
} finally {
monitor.done();
}
}
private void detectSourceFolders(ArrayList resEntries) {
ArrayList res= new ArrayList();
Set sourceFolderSet= fSourceFolders.keySet();
for (Iterator iter= sourceFolderSet.iterator(); iter.hasNext();) {
IPath path= (IPath) iter.next();
char[][] excludedPatternChars = convertPatternsToChars(path, fExclusionPatterns);
if (!Util.isExcluded(path, null, excludedPatternChars, true)) {
Set<IPath> excluded= new HashSet<IPath>();
for (Iterator inner= sourceFolderSet.iterator(); inner.hasNext();) {
IPath other= (IPath) inner.next();
if (!path.equals(other) && path.isPrefixOf(other)) {
IPath pathToExclude= other.removeFirstSegments(path.segmentCount()).addTrailingSeparator();
excluded.add(pathToExclude);
}
}
excluded.addAll(Arrays.asList(fExclusionPatterns));
IPath[] excludedPaths= (IPath[]) excluded.toArray(new IPath[excluded.size()]);
IIncludePathEntry entry= JavaScriptCore.newSourceEntry(path, excludedPaths);
res.add(entry);
}
}
Collections.sort(res, new CPSorter());
resEntries.addAll(res);
}
private void visitCompilationUnit(IFile file) {
IJavaScriptUnit cu= JavaScriptCore.createCompilationUnitFrom(file);
if (cu != null) {
IJavaScriptUnit workingCopy= null;
try {
workingCopy= cu.getWorkingCopy(null);
IPath relPath= getPackagePath(workingCopy.getSource());
IPath packPath= file.getParent().getFullPath();
String cuName= file.getName();
if (relPath == null) {
addToMap(fSourceFolders, packPath, new Path(cuName));
} else {
IPath folderPath= getFolderPath(packPath, relPath);
if (folderPath != null) {
addToMap(fSourceFolders, folderPath, relPath.append(cuName));
}
}
} catch (JavaScriptModelException e) {
// ignore
} catch (InvalidInputException e) {
// ignore
} finally {
if (workingCopy != null) {
try {
workingCopy.discardWorkingCopy();
} catch (JavaScriptModelException ignore) {
}
}
}
}
}
private IPath getPackagePath(String source) throws InvalidInputException {
IScanner scanner= ToolFactory.createScanner(false, false, false, false);
scanner.setSource(source.toCharArray());
scanner.resetTo(0, source.length() - 1);
int tok= scanner.getNextToken();
if (tok != ITerminalSymbols.TokenNamepackage) {
return null;
}
IPath res= Path.EMPTY;
do {
tok= scanner.getNextToken();
if (tok == ITerminalSymbols.TokenNameIdentifier) {
res= res.append(new String(scanner.getCurrentTokenSource()));
} else {
return res;
}
tok= scanner.getNextToken();
} while (tok == ITerminalSymbols.TokenNameDOT);
return res;
}
private void addToMap(HashMap map, IPath folderPath, IPath relPath) {
List list= (List) map.get(folderPath);
if (list == null) {
list= new ArrayList(50);
map.put(folderPath, list);
}
list.add(relPath);
}
private IPath getFolderPath(IPath packPath, IPath relpath) {
int remainingSegments= packPath.segmentCount() - relpath.segmentCount();
if (remainingSegments >= 0) {
IPath common= packPath.removeFirstSegments(remainingSegments);
if (common.equals(relpath)) {
return packPath.uptoSegment(remainingSegments);
}
}
return null;
}
private boolean isValidCUName(String name) {
return !JavaScriptConventions.validateCompilationUnitName(name).matches(IStatus.ERROR);
}
/* (non-Javadoc)
* @see org.eclipse.core.resources.IResourceProxyVisitor#visit(org.eclipse.core.resources.IResourceProxy)
*/
public boolean visit(IResourceProxy proxy) {
if (fMonitor.isCanceled()) {
throw new OperationCanceledException();
}
if (proxy.getType() == IResource.FILE) {
String name= proxy.getName();
if (isValidCUName(name))
visitCompilationUnit((IFile) proxy.requestResource());
return false;
}
return true;
}
public IIncludePathEntry[] getClasspath() {
if (fResultClasspath == null)
return new IIncludePathEntry[0];
return fResultClasspath;
}
}