/*******************************************************************************
* Copyright (c) 2000, 2013 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.search.indexing;
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.Path;
import org.eclipse.jdt.core.compiler.InvalidInputException;
import org.eclipse.jdt.core.search.IJavaSearchScope;
import org.eclipse.jdt.core.search.SearchEngine;
import org.eclipse.jdt.core.search.SearchParticipant;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
import org.eclipse.jdt.internal.compiler.parser.Scanner;
import org.eclipse.jdt.internal.compiler.parser.TerminalTokens;
import org.eclipse.jdt.internal.compiler.util.SimpleLookupTable;
import org.eclipse.jdt.internal.compiler.util.SuffixConstants;
import org.eclipse.jdt.internal.compiler.util.Util;
import org.eclipse.jdt.internal.core.JavaModelManager;
import org.eclipse.jdt.internal.core.index.Index;
import org.eclipse.jdt.internal.core.index.IndexLocation;
import org.eclipse.jdt.internal.core.search.JavaSearchDocument;
import org.eclipse.jdt.internal.core.search.processing.JobManager;
class AddJarFileToIndex extends IndexRequest {
private static final char JAR_SEPARATOR = IJavaSearchScope.JAR_FILE_ENTRY_SEPARATOR.charAt(0);
IFile resource;
Scanner scanner;
private IndexLocation indexFileURL;
private final boolean forceIndexUpdate;
public AddJarFileToIndex(IFile resource, IndexLocation indexFile, IndexManager manager) {
this(resource, indexFile, manager, false);
}
public AddJarFileToIndex(IFile resource, IndexLocation indexFile, IndexManager manager, final boolean updateIndex) {
super(resource.getFullPath(), manager);
this.resource = resource;
this.indexFileURL = indexFile;
this.forceIndexUpdate = updateIndex;
}
public AddJarFileToIndex(IPath jarPath, IndexLocation indexFile, IndexManager manager) {
this(jarPath, indexFile, manager, false);
}
public AddJarFileToIndex(IPath jarPath, IndexLocation indexFile, IndexManager manager, final boolean updateIndex) {
// external JAR scenario - no resource
super(jarPath, manager);
this.indexFileURL = indexFile;
this.forceIndexUpdate = updateIndex;
}
public boolean equals(Object o) {
if (o instanceof AddJarFileToIndex) {
if (this.resource != null)
return this.resource.equals(((AddJarFileToIndex) o).resource);
if (this.containerPath != null)
return this.containerPath.equals(((AddJarFileToIndex) o).containerPath);
}
return false;
}
public int hashCode() {
if (this.resource != null)
return this.resource.hashCode();
if (this.containerPath != null)
return this.containerPath.hashCode();
return -1;
}
public boolean execute(IProgressMonitor progressMonitor) {
if (this.isCancelled || progressMonitor != null && progressMonitor.isCanceled()) return true;
if (hasPreBuiltIndex()) {
boolean added = this.manager.addIndex(this.containerPath, this.indexFileURL);
if (added) return true;
this.indexFileURL = null;
}
try {
// if index is already cached, then do not perform any check
// MUST reset the IndexManager if a jar file is changed
Index index = this.manager.getIndexForUpdate(this.containerPath, false, /*do not reuse index file*/ false /*do not create if none*/);
if (index != null) {
if (JobManager.VERBOSE)
org.eclipse.jdt.internal.core.util.Util.verbose("-> no indexing required (index already exists) for " + this.containerPath); //$NON-NLS-1$
return true;
}
index = this.manager.getIndexForUpdate(this.containerPath, true, /*reuse index file*/ true /*create if none*/);
if (index == null) {
if (JobManager.VERBOSE)
org.eclipse.jdt.internal.core.util.Util.verbose("-> index could not be created for " + this.containerPath); //$NON-NLS-1$
return true;
}
ReadWriteMonitor monitor = index.monitor;
if (monitor == null) {
if (JobManager.VERBOSE)
org.eclipse.jdt.internal.core.util.Util.verbose("-> index for " + this.containerPath + " just got deleted"); //$NON-NLS-1$//$NON-NLS-2$
return true; // index got deleted since acquired
}
index.separator = JAR_SEPARATOR;
ZipFile zip = null;
try {
// this path will be a relative path to the workspace in case the zipfile in the workspace otherwise it will be a path in the
// local file system
Path zipFilePath = null;
monitor.enterWrite(); // ask permission to write
if (this.resource != null) {
URI location = this.resource.getLocationURI();
if (location == null) return false;
if (JavaModelManager.ZIP_ACCESS_VERBOSE)
System.out.println("(" + Thread.currentThread() + ") [AddJarFileToIndex.execute()] Creating ZipFile on " + location.getPath()); //$NON-NLS-1$ //$NON-NLS-2$
File file = null;
try {
file = org.eclipse.jdt.internal.core.util.Util.toLocalFile(location, progressMonitor);
} catch (CoreException e) {
if (JobManager.VERBOSE) {
org.eclipse.jdt.internal.core.util.Util.verbose("-> failed to index " + location.getPath() + " because of the following exception:"); //$NON-NLS-1$ //$NON-NLS-2$
e.printStackTrace();
}
}
if (file == null) {
if (JobManager.VERBOSE)
org.eclipse.jdt.internal.core.util.Util.verbose("-> failed to index " + location.getPath() + " because the file could not be fetched"); //$NON-NLS-1$ //$NON-NLS-2$
return false;
}
zip = new ZipFile(file);
zipFilePath = (Path) this.resource.getFullPath().makeRelative();
// absolute path relative to the workspace
} else {
if (JavaModelManager.ZIP_ACCESS_VERBOSE)
System.out.println("(" + Thread.currentThread() + ") [AddJarFileToIndex.execute()] Creating ZipFile on " + this.containerPath); //$NON-NLS-1$ //$NON-NLS-2$
// external file -> it is ok to use toFile()
zip = new ZipFile(this.containerPath.toFile());
zipFilePath = (Path) this.containerPath;
// path is already canonical since coming from a library classpath entry
}
if (this.isCancelled) {
if (JobManager.VERBOSE)
org.eclipse.jdt.internal.core.util.Util.verbose("-> indexing of " + zip.getName() + " has been cancelled"); //$NON-NLS-1$ //$NON-NLS-2$
return false;
}
if (JobManager.VERBOSE)
org.eclipse.jdt.internal.core.util.Util.verbose("-> indexing " + zip.getName()); //$NON-NLS-1$
long initialTime = System.currentTimeMillis();
String[] paths = index.queryDocumentNames(""); // all file names //$NON-NLS-1$
if (paths != null) {
int max = paths.length;
/* check integrity of the existing index file
* if the length is equal to 0, we want to index the whole jar again
* If not, then we want to check that there is no missing entry, if
* one entry is missing then we recreate the index
*/
String EXISTS = "OK"; //$NON-NLS-1$
String DELETED = "DELETED"; //$NON-NLS-1$
SimpleLookupTable indexedFileNames = new SimpleLookupTable(max == 0 ? 33 : max + 11);
for (int i = 0; i < max; i++)
indexedFileNames.put(paths[i], DELETED);
for (Enumeration e = zip.entries(); e.hasMoreElements();) {
// iterate each entry to index it
ZipEntry ze = (ZipEntry) e.nextElement();
String zipEntryName = ze.getName();
if (Util.isClassFileName(zipEntryName) && isValidPackageNameForClass(zipEntryName))
// the class file may not be there if the package name is not valid
indexedFileNames.put(zipEntryName, EXISTS);
}
boolean needToReindex = indexedFileNames.elementSize != max; // a new file was added
if (!needToReindex) {
Object[] valueTable = indexedFileNames.valueTable;
for (int i = 0, l = valueTable.length; i < l; i++) {
if (valueTable[i] == DELETED) {
needToReindex = true; // a file was deleted so re-index
break;
}
}
if (!needToReindex) {
if (JobManager.VERBOSE)
org.eclipse.jdt.internal.core.util.Util.verbose("-> no indexing required (index is consistent with library) for " //$NON-NLS-1$
+ zip.getName() + " (" //$NON-NLS-1$
+ (System.currentTimeMillis() - initialTime) + "ms)"); //$NON-NLS-1$
this.manager.saveIndex(index); // to ensure its placed into the saved state
return true;
}
}
}
// Index the jar for the first time or reindex the jar in case the previous index file has been corrupted
// index already existed: recreate it so that we forget about previous entries
SearchParticipant participant = SearchEngine.getDefaultSearchParticipant();
if (!this.manager.resetIndex(this.containerPath)) {
// failed to recreate index, see 73330
this.manager.removeIndex(this.containerPath);
return false;
}
index.separator = JAR_SEPARATOR;
IPath indexPath = null;
IndexLocation indexLocation;
if ((indexLocation = index.getIndexLocation()) != null) {
indexPath = new Path(indexLocation.getCanonicalFilePath());
}
for (Enumeration e = zip.entries(); e.hasMoreElements();) {
if (this.isCancelled) {
if (JobManager.VERBOSE)
org.eclipse.jdt.internal.core.util.Util.verbose("-> indexing of " + zip.getName() + " has been cancelled"); //$NON-NLS-1$ //$NON-NLS-2$
return false;
}
// iterate each entry to index it
ZipEntry ze = (ZipEntry) e.nextElement();
String zipEntryName = ze.getName();
if (Util.isClassFileName(zipEntryName) &&
isValidPackageNameForClass(zipEntryName)) {
// index only classes coming from valid packages - https://bugs.eclipse.org/bugs/show_bug.cgi?id=293861
final byte[] classFileBytes = org.eclipse.jdt.internal.compiler.util.Util.getZipEntryByteContent(ze, zip);
JavaSearchDocument entryDocument = new JavaSearchDocument(ze, zipFilePath, classFileBytes, participant);
this.manager.indexDocument(entryDocument, participant, index, indexPath);
}
}
this.manager.saveIndex(index);
if (JobManager.VERBOSE)
org.eclipse.jdt.internal.core.util.Util.verbose("-> done indexing of " //$NON-NLS-1$
+ zip.getName() + " (" //$NON-NLS-1$
+ (System.currentTimeMillis() - initialTime) + "ms)"); //$NON-NLS-1$
} finally {
if (zip != null) {
if (JavaModelManager.ZIP_ACCESS_VERBOSE)
System.out.println("(" + Thread.currentThread() + ") [AddJarFileToIndex.execute()] Closing ZipFile " + zip); //$NON-NLS-1$ //$NON-NLS-2$
zip.close();
}
monitor.exitWrite(); // free write lock
}
} catch (IOException e) {
if (JobManager.VERBOSE) {
org.eclipse.jdt.internal.core.util.Util.verbose("-> failed to index " + this.containerPath + " because of the following exception:"); //$NON-NLS-1$ //$NON-NLS-2$
e.printStackTrace();
}
this.manager.removeIndex(this.containerPath);
return false;
}
return true;
}
public String getJobFamily() {
if (this.resource != null)
return super.getJobFamily();
return this.containerPath.toOSString(); // external jar
}
private boolean isIdentifier() throws InvalidInputException {
switch(this.scanner.scanIdentifier()) {
// assert and enum will not be recognized as java identifiers
// in 1.7 mode, which are in 1.3.
case TerminalTokens.TokenNameIdentifier:
case TerminalTokens.TokenNameassert:
case TerminalTokens.TokenNameenum:
return true;
default:
return false;
}
}
private boolean isValidPackageNameForClass(String className) {
char[] classNameArray = className.toCharArray();
// use 1.7 as the source level as there are more valid identifiers in 1.7 mode
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=376673
if (this.scanner == null)
this.scanner = new Scanner(false /* comment */, true /* whitespace */, false /* nls */,
ClassFileConstants.JDK1_7/* sourceLevel */, null/* taskTag */, null/* taskPriorities */, true /* taskCaseSensitive */);
this.scanner.setSource(classNameArray);
this.scanner.eofPosition = classNameArray.length - SuffixConstants.SUFFIX_CLASS.length;
try {
if (isIdentifier()) {
while (this.scanner.eofPosition > this.scanner.currentPosition) {
if (this.scanner.getNextChar() != '/' || this.scanner.eofPosition <= this.scanner.currentPosition) {
return false;
}
if (!isIdentifier()) return false;
}
return true;
}
} catch (InvalidInputException e) {
// invalid class name
}
return false;
}
protected Integer updatedIndexState() {
Integer updateState = null;
if(hasPreBuiltIndex()) {
updateState = IndexManager.REUSE_STATE;
}
else {
updateState = IndexManager.REBUILDING_STATE;
}
return updateState;
}
public String toString() {
return "indexing " + this.containerPath.toString(); //$NON-NLS-1$
}
protected boolean hasPreBuiltIndex() {
return !this.forceIndexUpdate && (this.indexFileURL != null && this.indexFileURL.exists());
}
}