org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/builder/ClasspathJar.java - objectteams/org.eclipse.objectteams - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2016 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
  *     Tal Lev-Ami - added package cache for zip files
  *     Stephan Herrmann - Contribution for
  *								Bug 440477 - [null] Infrastructure for feeding external annotations into compilation
  *******************************************************************************/
 package org.eclipse.jdt.internal.core.builder;

 import java.io.File;
 import java.io.IOException;
 import java.util.Date;
 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.jdt.internal.compiler.classfmt.ClassFileReader;
 import org.eclipse.jdt.internal.compiler.classfmt.ClassFormatException;
 import org.eclipse.jdt.internal.compiler.classfmt.ExternalAnnotationDecorator;
 import org.eclipse.jdt.internal.compiler.env.AccessRuleSet;
 import org.eclipse.jdt.internal.compiler.env.IBinaryType;
 import org.eclipse.jdt.internal.compiler.env.NameEnvironmentAnswer;
 import org.eclipse.jdt.internal.compiler.util.SimpleLookupTable;
 import org.eclipse.jdt.internal.compiler.util.SimpleSet;
 import org.eclipse.jdt.internal.compiler.util.SuffixConstants;
 import org.eclipse.jdt.internal.core.util.Util;

 @SuppressWarnings("rawtypes")
 public class ClasspathJar extends ClasspathLocation {

 static class PackageCacheEntry {
 	long lastModified;
 	long fileSize;
 	SimpleSet packageSet;

 	PackageCacheEntry(long lastModified, long fileSize, SimpleSet packageSet) {
 		this.lastModified = lastModified;
 		this.fileSize = fileSize;
 		this.packageSet = packageSet;
 	}
 }

 static SimpleLookupTable PackageCache = new SimpleLookupTable();

 /**
  * Calculate and cache the package list available in the zipFile.
  * @param jar The ClasspathJar to use
  * @return A SimpleSet with the all the package names in the zipFile.
  */
 static SimpleSet findPackageSet(ClasspathJar jar) {
 	String zipFileName = jar.zipFilename;
 	long lastModified = jar.lastModified();
 	long fileSize = new File(zipFileName).length();
 	PackageCacheEntry cacheEntry = (PackageCacheEntry) PackageCache.get(zipFileName);
 	if (cacheEntry != null && cacheEntry.lastModified == lastModified && cacheEntry.fileSize == fileSize)
 		return cacheEntry.packageSet;

 	SimpleSet packageSet = new SimpleSet(41);
 	packageSet.add(""); //$NON-NLS-1$
 	nextEntry : for (Enumeration e = jar.zipFile.entries(); e.hasMoreElements(); ) {
 		String fileName = ((ZipEntry) e.nextElement()).getName();

 		// add the package name & all of its parent packages
 		int last = fileName.lastIndexOf('/');
 		while (last > 0) {
 			// extract the package name
 			String packageName = fileName.substring(0, last);
 			if (packageSet.addIfNotIncluded(packageName) == null)
 				continue nextEntry; // already existed
 			last = packageName.lastIndexOf('/');
 		}
 	}

 	PackageCache.put(zipFileName, new PackageCacheEntry(lastModified, fileSize, packageSet));
 	return packageSet;
 }


 String zipFilename; // keep for equals
 IFile resource;
 ZipFile zipFile;
 ZipFile annotationZipFile;
 long lastModified;
 boolean closeZipFileAtEnd;
 SimpleSet knownPackageNames;
 AccessRuleSet accessRuleSet;
 String externalAnnotationPath;

 ClasspathJar(IFile resource, AccessRuleSet accessRuleSet, IPath externalAnnotationPath) {
 	this.resource = resource;
 	try {
 		java.net.URI location = resource.getLocationURI();
 		if (location == null) {
 			this.zipFilename = ""; //$NON-NLS-1$
 		} else {
 			File localFile = Util.toLocalFile(location, null);
 			this.zipFilename = localFile.getPath();
 		}
 	} catch (CoreException e) {
 		// ignore
 	}
 	this.zipFile = null;
 	this.knownPackageNames = null;
 	this.accessRuleSet = accessRuleSet;
 	if (externalAnnotationPath != null)
 		this.externalAnnotationPath = externalAnnotationPath.toString();
 }

 ClasspathJar(String zipFilename, long lastModified, AccessRuleSet accessRuleSet, IPath externalAnnotationPath) {
 	this.zipFilename = zipFilename;
 	this.lastModified = lastModified;
 	this.zipFile = null;
 	this.knownPackageNames = null;
 	this.accessRuleSet = accessRuleSet;
 	if (externalAnnotationPath != null)
 		this.externalAnnotationPath = externalAnnotationPath.toString();
 }

 public ClasspathJar(ZipFile zipFile, AccessRuleSet accessRuleSet, IPath externalAnnotationPath) {
 	this.zipFilename = zipFile.getName();
 	this.zipFile = zipFile;
 	this.closeZipFileAtEnd = false;
 	this.knownPackageNames = null;
 	this.accessRuleSet = accessRuleSet;
 	if (externalAnnotationPath != null)
 		this.externalAnnotationPath = externalAnnotationPath.toString();
 }

 public void cleanup() {
 	if (this.closeZipFileAtEnd) {
 		if (this.zipFile != null) {
 			try {
 				this.zipFile.close();
 			} catch(IOException e) { // ignore it
 			}
 			this.zipFile = null;
 		}
 		if (this.annotationZipFile != null) {
 			try {
 				this.annotationZipFile.close();
 			} catch(IOException e) { // ignore it
 			}
 			this.annotationZipFile = null;
 		}
 	}
 	this.knownPackageNames = null;
 }

 public boolean equals(Object o) {
 	if (this == o) return true;
 	if (!(o instanceof ClasspathJar)) return false;

 	ClasspathJar jar = (ClasspathJar) o;
 	if (this.accessRuleSet != jar.accessRuleSet)
 		if (this.accessRuleSet == null || !this.accessRuleSet.equals(jar.accessRuleSet))
 			return false;
 	return this.zipFilename.equals(jar.zipFilename) && lastModified() == jar.lastModified();
 }

 public NameEnvironmentAnswer findClass(String binaryFileName, String qualifiedPackageName, String qualifiedBinaryFileName) {
 	if (!isPackage(qualifiedPackageName)) return null; // most common case

 	try {
 		IBinaryType reader = ClassFileReader.read(this.zipFile, qualifiedBinaryFileName);
 		if (reader != null) {
 			String fileNameWithoutExtension = qualifiedBinaryFileName.substring(0, qualifiedBinaryFileName.length() - SuffixConstants.SUFFIX_CLASS.length);
 			if (this.externalAnnotationPath != null) {
 				try {
 					if (this.annotationZipFile == null) {
 						this.annotationZipFile = ExternalAnnotationDecorator
 								.getAnnotationZipFile(this.externalAnnotationPath, null);
 					}

 					reader = ExternalAnnotationDecorator.create(reader, this.externalAnnotationPath,
 							fileNameWithoutExtension, this.annotationZipFile);
 				} catch (IOException e) {
 					// don't let error on annotations fail class reading
 				}
 			}
 			if (this.accessRuleSet == null)
 				return new NameEnvironmentAnswer(reader, null);
 			return new NameEnvironmentAnswer(reader, this.accessRuleSet.getViolatedRestriction(fileNameWithoutExtension.toCharArray()));
 		}
 	} catch (IOException e) { // treat as if class file is missing
 	} catch (ClassFormatException e) { // treat as if class file is missing
 	}
 	return null;
 }

 public IPath getProjectRelativePath() {
 	if (this.resource == null) return null;
 	return	this.resource.getProjectRelativePath();
 }

 public int hashCode() {
 	return this.zipFilename == null ? super.hashCode() : this.zipFilename.hashCode();
 }

 public boolean isPackage(String qualifiedPackageName) {
 	if (this.knownPackageNames != null)
 		return this.knownPackageNames.includes(qualifiedPackageName);

 	try {
 		if (this.zipFile == null) {
 			if (org.eclipse.jdt.internal.core.JavaModelManager.ZIP_ACCESS_VERBOSE) {
 				System.out.println("(" + Thread.currentThread() + ") [ClasspathJar.isPackage(String)] Creating ZipFile on " + this.zipFilename); //$NON-NLS-1$	//$NON-NLS-2$
 			}
 			this.zipFile = new ZipFile(this.zipFilename);
 			this.closeZipFileAtEnd = true;
 		}
 		this.knownPackageNames = findPackageSet(this);
 	} catch(Exception e) {
 		this.knownPackageNames = new SimpleSet(); // assume for this build the zipFile is empty
 	}
 	return this.knownPackageNames.includes(qualifiedPackageName);
 }

 public long lastModified() {
 	if (this.lastModified == 0)
 		this.lastModified = new File(this.zipFilename).lastModified();
 	return this.lastModified;
 }

 public String toString() {
 	String start = "Classpath jar file " + this.zipFilename; //$NON-NLS-1$
 	if (this.accessRuleSet == null)
 		return start;
 	return start + " with " + this.accessRuleSet; //$NON-NLS-1$
 }

 public String debugPathString() {
 	long time = lastModified();
 	if (time == 0)
 		return this.zipFilename;
 	return this.zipFilename + '(' + (new Date(time)) + " : " + time + ')'; //$NON-NLS-1$
 }

 }
	/*******************************************************************************
	* Copyright (c) 2000, 2016 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
	* Tal Lev-Ami - added package cache for zip files
	* Stephan Herrmann - Contribution for
	* Bug 440477 - [null] Infrastructure for feeding external annotations into compilation
	*******************************************************************************/
	package org.eclipse.jdt.internal.core.builder;

	import java.io.File;
	import java.io.IOException;
	import java.util.Date;
	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.jdt.internal.compiler.classfmt.ClassFileReader;
	import org.eclipse.jdt.internal.compiler.classfmt.ClassFormatException;
	import org.eclipse.jdt.internal.compiler.classfmt.ExternalAnnotationDecorator;
	import org.eclipse.jdt.internal.compiler.env.AccessRuleSet;
	import org.eclipse.jdt.internal.compiler.env.IBinaryType;
	import org.eclipse.jdt.internal.compiler.env.NameEnvironmentAnswer;
	import org.eclipse.jdt.internal.compiler.util.SimpleLookupTable;
	import org.eclipse.jdt.internal.compiler.util.SimpleSet;
	import org.eclipse.jdt.internal.compiler.util.SuffixConstants;
	import org.eclipse.jdt.internal.core.util.Util;

	@SuppressWarnings("rawtypes")
	public class ClasspathJar extends ClasspathLocation {

	static class PackageCacheEntry {
	long lastModified;
	long fileSize;
	SimpleSet packageSet;

	PackageCacheEntry(long lastModified, long fileSize, SimpleSet packageSet) {
	this.lastModified = lastModified;
	this.fileSize = fileSize;
	this.packageSet = packageSet;
	}
	}

	static SimpleLookupTable PackageCache = new SimpleLookupTable();

	/**
	* Calculate and cache the package list available in the zipFile.
	* @param jar The ClasspathJar to use
	* @return A SimpleSet with the all the package names in the zipFile.
	*/
	static SimpleSet findPackageSet(ClasspathJar jar) {
	String zipFileName = jar.zipFilename;
	long lastModified = jar.lastModified();
	long fileSize = new File(zipFileName).length();
	PackageCacheEntry cacheEntry = (PackageCacheEntry) PackageCache.get(zipFileName);
	if (cacheEntry != null && cacheEntry.lastModified == lastModified && cacheEntry.fileSize == fileSize)
	return cacheEntry.packageSet;

	SimpleSet packageSet = new SimpleSet(41);
	packageSet.add(""); //$NON-NLS-1$
	nextEntry : for (Enumeration e = jar.zipFile.entries(); e.hasMoreElements(); ) {
	String fileName = ((ZipEntry) e.nextElement()).getName();

	// add the package name & all of its parent packages
	int last = fileName.lastIndexOf('/');
	while (last > 0) {
	// extract the package name
	String packageName = fileName.substring(0, last);
	if (packageSet.addIfNotIncluded(packageName) == null)
	continue nextEntry; // already existed
	last = packageName.lastIndexOf('/');
	}
	}

	PackageCache.put(zipFileName, new PackageCacheEntry(lastModified, fileSize, packageSet));
	return packageSet;
	}


	String zipFilename; // keep for equals
	IFile resource;
	ZipFile zipFile;
	ZipFile annotationZipFile;
	long lastModified;
	boolean closeZipFileAtEnd;
	SimpleSet knownPackageNames;
	AccessRuleSet accessRuleSet;
	String externalAnnotationPath;

	ClasspathJar(IFile resource, AccessRuleSet accessRuleSet, IPath externalAnnotationPath) {
	this.resource = resource;
	try {
	java.net.URI location = resource.getLocationURI();
	if (location == null) {
	this.zipFilename = ""; //$NON-NLS-1$
	} else {
	File localFile = Util.toLocalFile(location, null);
	this.zipFilename = localFile.getPath();
	}
	} catch (CoreException e) {
	// ignore
	}
	this.zipFile = null;
	this.knownPackageNames = null;
	this.accessRuleSet = accessRuleSet;
	if (externalAnnotationPath != null)
	this.externalAnnotationPath = externalAnnotationPath.toString();
	}

	ClasspathJar(String zipFilename, long lastModified, AccessRuleSet accessRuleSet, IPath externalAnnotationPath) {
	this.zipFilename = zipFilename;
	this.lastModified = lastModified;
	this.zipFile = null;
	this.knownPackageNames = null;
	this.accessRuleSet = accessRuleSet;
	if (externalAnnotationPath != null)
	this.externalAnnotationPath = externalAnnotationPath.toString();
	}

	public ClasspathJar(ZipFile zipFile, AccessRuleSet accessRuleSet, IPath externalAnnotationPath) {
	this.zipFilename = zipFile.getName();
	this.zipFile = zipFile;
	this.closeZipFileAtEnd = false;
	this.knownPackageNames = null;
	this.accessRuleSet = accessRuleSet;
	if (externalAnnotationPath != null)
	this.externalAnnotationPath = externalAnnotationPath.toString();
	}

	public void cleanup() {
	if (this.closeZipFileAtEnd) {
	if (this.zipFile != null) {
	try {
	this.zipFile.close();
	} catch(IOException e) { // ignore it
	}
	this.zipFile = null;
	}
	if (this.annotationZipFile != null) {
	try {
	this.annotationZipFile.close();
	} catch(IOException e) { // ignore it
	}
	this.annotationZipFile = null;
	}
	}
	this.knownPackageNames = null;
	}

	public boolean equals(Object o) {
	if (this == o) return true;
	if (!(o instanceof ClasspathJar)) return false;

	ClasspathJar jar = (ClasspathJar) o;
	if (this.accessRuleSet != jar.accessRuleSet)
	if (this.accessRuleSet == null \|\| !this.accessRuleSet.equals(jar.accessRuleSet))
	return false;
	return this.zipFilename.equals(jar.zipFilename) && lastModified() == jar.lastModified();
	}

	public NameEnvironmentAnswer findClass(String binaryFileName, String qualifiedPackageName, String qualifiedBinaryFileName) {
	if (!isPackage(qualifiedPackageName)) return null; // most common case

	try {
	IBinaryType reader = ClassFileReader.read(this.zipFile, qualifiedBinaryFileName);
	if (reader != null) {
	String fileNameWithoutExtension = qualifiedBinaryFileName.substring(0, qualifiedBinaryFileName.length() - SuffixConstants.SUFFIX_CLASS.length);
	if (this.externalAnnotationPath != null) {
	try {
	if (this.annotationZipFile == null) {
	this.annotationZipFile = ExternalAnnotationDecorator
	.getAnnotationZipFile(this.externalAnnotationPath, null);
	}

	reader = ExternalAnnotationDecorator.create(reader, this.externalAnnotationPath,
	fileNameWithoutExtension, this.annotationZipFile);
	} catch (IOException e) {
	// don't let error on annotations fail class reading
	}
	}
	if (this.accessRuleSet == null)
	return new NameEnvironmentAnswer(reader, null);
	return new NameEnvironmentAnswer(reader, this.accessRuleSet.getViolatedRestriction(fileNameWithoutExtension.toCharArray()));
	}
	} catch (IOException e) { // treat as if class file is missing
	} catch (ClassFormatException e) { // treat as if class file is missing
	}
	return null;
	}

	public IPath getProjectRelativePath() {
	if (this.resource == null) return null;
	return this.resource.getProjectRelativePath();
	}

	public int hashCode() {
	return this.zipFilename == null ? super.hashCode() : this.zipFilename.hashCode();
	}

	public boolean isPackage(String qualifiedPackageName) {
	if (this.knownPackageNames != null)
	return this.knownPackageNames.includes(qualifiedPackageName);

	try {
	if (this.zipFile == null) {
	if (org.eclipse.jdt.internal.core.JavaModelManager.ZIP_ACCESS_VERBOSE) {
	System.out.println("(" + Thread.currentThread() + ") [ClasspathJar.isPackage(String)] Creating ZipFile on " + this.zipFilename); //$NON-NLS-1$ //$NON-NLS-2$
	}
	this.zipFile = new ZipFile(this.zipFilename);
	this.closeZipFileAtEnd = true;
	}
	this.knownPackageNames = findPackageSet(this);
	} catch(Exception e) {
	this.knownPackageNames = new SimpleSet(); // assume for this build the zipFile is empty
	}
	return this.knownPackageNames.includes(qualifiedPackageName);
	}

	public long lastModified() {
	if (this.lastModified == 0)
	this.lastModified = new File(this.zipFilename).lastModified();
	return this.lastModified;
	}

	public String toString() {
	String start = "Classpath jar file " + this.zipFilename; //$NON-NLS-1$
	if (this.accessRuleSet == null)
	return start;
	return start + " with " + this.accessRuleSet; //$NON-NLS-1$
	}

	public String debugPathString() {
	long time = lastModified();
	if (time == 0)
	return this.zipFilename;
	return this.zipFilename + '(' + (new Date(time)) + " : " + time + ')'; //$NON-NLS-1$
	}

	}