bundles/org.eclipse.equinox.p2.jarprocessor/src/org/eclipse/equinox/internal/p2/jarprocessor/Utils.java - equinox/rt.equinox.p2 - Git at Google

 /*******************************************************************************
  * Copyright (c) 2006, 2017 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
  *     IBM - Initial API and implementation
  *******************************************************************************/
 package org.eclipse.equinox.internal.p2.jarprocessor;

 import java.io.*;
 import java.util.*;
 import java.util.jar.JarEntry;
 import java.util.jar.JarFile;
 import java.util.zip.ZipException;
 import org.eclipse.internal.provisional.equinox.p2.jarprocessor.JarProcessor;

 /**
  * @author aniefer@ca.ibm.com
  *
  */
 public class Utils {
 	public static final String MARK_FILE_NAME = "META-INF/eclipse.inf"; //$NON-NLS-1$

 	/*
 	 * Properties found in outer pack.properties file
 	 */
 	// comma separated list of jars to exclude from sigining
 	public static final String SIGN_EXCLUDES = "sign.excludes"; //$NON-NLS-1$
 	// comma separated list of jars to exlclude from packing
 	/**
 	 * @noreference This field is not intended to be referenced by clients.
 	 * @deprecated See <a href=
 	 *             "https://bugs.eclipse.org/bugs/show_bug.cgi?id=572043">bug</a>
 	 *             for details.
 	 */
 	@Deprecated(forRemoval = true, since = "1.2.0")
 	public static final String PACK_EXCLUDES = "pack.excludes"; //$NON-NLS-1$
 	// Suffix used when specifying arguments to use when running pack200 on a jar

 	/**
 	 * @noreference This field is not intended to be referenced by clients.
 	 * @deprecated See <a href=
 	 *             "https://bugs.eclipse.org/bugs/show_bug.cgi?id=572043">bug</a>
 	 *             for details.
 	 */
 	@Deprecated(forRemoval = true, since = "1.2.0")
 	public static final String PACK_ARGS_SUFFIX = ".pack.args"; //$NON-NLS-1$

 	/*
 	 * Properties found in both pack.properties and eclipse.inf
 	 */
 	// Default arguments to use when running pack200.
 	// Affects all jars when specified in pack.properties, affects children when
 	// specified in eclipse.inf
 	/**
 	 * @noreference This field is not intended to be referenced by clients.
 	 * @deprecated See <a href=
 	 *             "https://bugs.eclipse.org/bugs/show_bug.cgi?id=572043">bug</a>
 	 *             for details.
 	 */
 	@Deprecated(forRemoval = true, since = "1.2.0")
 	public static final String DEFAULT_PACK_ARGS = "pack200.default.args"; //$NON-NLS-1$

 	/*
 	 * Properties found in eclipse.inf file
 	 */
 	// This jar has been conditioned with pack200
 	/**
 	 * @noreference This field is not intended to be referenced by clients.
 	 * @deprecated See <a href=
 	 *             "https://bugs.eclipse.org/bugs/show_bug.cgi?id=572043">bug</a>
 	 *             for details.
 	 */
 	@Deprecated(forRemoval = true, since = "1.2.0")
 	public static final String MARK_PROPERTY = "pack200.conditioned"; //$NON-NLS-1$
 	// Exclude this jar from processing
 	public static final String MARK_EXCLUDE = "jarprocessor.exclude"; //$NON-NLS-1$
 	// Exclude this jar from pack200
 	public static final String MARK_EXCLUDE_PACK = "jarprocessor.exclude.pack"; //$NON-NLS-1$
 	// Exclude this jar from signing
 	public static final String MARK_EXCLUDE_SIGN = "jarprocessor.exclude.sign"; //$NON-NLS-1$
 	// Exclude this jar's children from processing
 	public static final String MARK_EXCLUDE_CHILDREN = "jarprocessor.exclude.children"; //$NON-NLS-1$
 	// Exclude this jar's children from pack200
 	public static final String MARK_EXCLUDE_CHILDREN_PACK = "jarprocessor.exclude.children.pack"; //$NON-NLS-1$
 	// Exclude this jar's children from signing
 	public static final String MARK_EXCLUDE_CHILDREN_SIGN = "jarprocessor.exclude.children.sign"; //$NON-NLS-1$
 	// Arguments used in pack200 for this jar
 	/**
 	 * @noreference This field is not intended to be referenced by clients.
 	 * @deprecated See <a href=
 	 *             "https://bugs.eclipse.org/bugs/show_bug.cgi?id=572043">bug</a>
 	 *             for details.
 	 */
 	@Deprecated(forRemoval = true, since = "1.2.0")
 	public static final String PACK_ARGS = "pack200.args"; //$NON-NLS-1$
 	/**
 	 * @noreference This field is not intended to be referenced by clients.
 	 * @deprecated See <a href=
 	 *             "https://bugs.eclipse.org/bugs/show_bug.cgi?id=572043">bug</a>
 	 *             for details.
 	 */
 	@Deprecated(forRemoval = true, since = "1.2.0")
 	public static final String PACK200_PROPERTY = "org.eclipse.update.jarprocessor.pack200"; //$NON-NLS-1$
 	public static final String JRE = "@jre"; //$NON-NLS-1$
 	public static final String PATH = "@path"; //$NON-NLS-1$
 	public static final String NONE = "@none"; //$NON-NLS-1$
 	/**
 	 * @noreference This field is not intended to be referenced by clients.
 	 * @deprecated See <a href=
 	 *             "https://bugs.eclipse.org/bugs/show_bug.cgi?id=572043">bug</a>
 	 *             for details.
 	 */
 	@Deprecated(forRemoval = true, since = "1.2.0")
 	public static final String PACKED_SUFFIX = ".pack.gz"; //$NON-NLS-1$
 	public static final String JAR_SUFFIX = ".jar"; //$NON-NLS-1$

 	public static final FileFilter JAR_FILTER = pathname -> pathname.isFile() && pathname.getName().endsWith(".jar"); //$NON-NLS-1$
 	/**
 	 * @noreference This field is not intended to be referenced by clients.
 	 * @deprecated See <a href=
 	 *             "https://bugs.eclipse.org/bugs/show_bug.cgi?id=572043">bug</a>
 	 *             for details.
 	 */
 	@SuppressWarnings("removal")
 	@Deprecated(forRemoval = true, since = "1.2.0")
 	public static final FileFilter PACK_GZ_FILTER = pathname -> pathname.isFile()
 			&& pathname.getName().endsWith(JarProcessor.PACKED_SUFFIX);

 	public static void close(Object stream) {
 		if (stream != null) {
 			try {
 				if (stream instanceof InputStream)
 					((InputStream) stream).close();
 				else if (stream instanceof OutputStream)
 					((OutputStream) stream).close();
 				else if (stream instanceof JarFile)
 					((JarFile) stream).close();
 			} catch (IOException e) {
 				// ignore
 			}
 		}
 	}

 	/**
 	 * get the set of commands to try to execute pack/unpack
 	 *
 	 * @param cmd the command, either "pack200" or "unpack200"
 	 * @return String [] or null
 	 *
 	 * @noreference This method is not intended to be referenced by clients.
 	 * @deprecated See <a href=
 	 *             "https://bugs.eclipse.org/bugs/show_bug.cgi?id=572043">bug</a>
 	 *             for details.
 	 */
 	@Deprecated(forRemoval = true, since = "1.2.0")
 	public static String[] getPack200Commands(String cmd) {
 		String[] locations = null;
 		String prop = System.getProperty(PACK200_PROPERTY);
 		String javaHome = System.getProperty("java.home"); //$NON-NLS-1$
 		if (null == prop) {
 			locations = new String[] { javaHome + "/bin/" + cmd, cmd }; //$NON-NLS-1$
 		} else
 			switch (prop) {
 			case NONE:
 				return null;
 			case JRE:
 				locations = new String[] { javaHome + "/bin/" + cmd }; //$NON-NLS-1$
 				break;
 			case PATH:
 				locations = new String[] { cmd };
 				break;
 			default:
 				locations = new String[] { prop + "/" + cmd }; //$NON-NLS-1$
 				break;
 			}
 		return locations;
 	}

 	/**
 	 * Transfers all available bytes from the given input stream to the given output
 	 * stream. Closes both streams if close == true, regardless of failure. Flushes
 	 * the destination stream if close == false
 	 *
 	 * @param source
 	 * @param destination
 	 * @param close
 	 * @throws IOException
 	 */
 	public static void transferStreams(InputStream source, OutputStream destination, boolean close) throws IOException {
 		source = new BufferedInputStream(source);
 		destination = new BufferedOutputStream(destination);
 		try {
 			byte[] buffer = new byte[8192];
 			while (true) {
 				int bytesRead = -1;
 				if ((bytesRead = source.read(buffer)) == -1)
 					break;
 				destination.write(buffer, 0, bytesRead);
 			}
 		} finally {
 			if (close) {
 				close(source);
 				close(destination);
 			} else {
 				destination.flush();
 			}
 		}
 	}

 	/**
 	 * Deletes all the files and directories from the given root down (inclusive).
 	 * Returns false if we could not delete some file or an exception occurred at
 	 * any point in the deletion. Even if an exception occurs, a best effort is made
 	 * to continue deleting.
 	 */
 	public static boolean clear(java.io.File root) {
 		boolean result = clearChildren(root);
 		try {
 			if (root.exists())
 				result &= root.delete();
 		} catch (Exception e) {
 			result = false;
 		}
 		return result;
 	}

 	/**
 	 * Deletes all the files and directories from the given root down, except for
 	 * the root itself. Returns false if we could not delete some file or an
 	 * exception occurred at any point in the deletion. Even if an exception occurs,
 	 * a best effort is made to continue deleting.
 	 */
 	public static boolean clearChildren(java.io.File root) {
 		boolean result = true;
 		if (root.isDirectory()) {
 			String[] list = root.list();
 			// for some unknown reason, list() can return null.
 			// Just skip the children If it does.
 			if (list != null)
 				for (String list1 : list) {
 					result &= clear(new java.io.File(root, list1));
 				}
 		}
 		return result;
 	}

 	/**
 	 * @noreference This method is not intended to be referenced by clients.
 	 * @deprecated See <a href=
 	 *             "https://bugs.eclipse.org/bugs/show_bug.cgi?id=572043">bug</a>
 	 *             for details.
 	 */
 	@Deprecated(forRemoval = true, since = "1.2.0")
 	public static Set<String> getPackExclusions(Properties properties) {
 		if (properties == null)
 			return Collections.emptySet();

 		String packExcludes = properties.getProperty(PACK_EXCLUDES);
 		if (packExcludes != null) {
 			String[] excludes = toStringArray(packExcludes, ","); //$NON-NLS-1$
 			Set<String> packExclusions = new HashSet<>();
 			for (String exclude : excludes) {
 				packExclusions.add(exclude);
 			}
 			return packExclusions;
 		}
 		return Collections.emptySet();
 	}

 	public static Set<String> getSignExclusions(Properties properties) {
 		if (properties == null)
 			return Collections.emptySet();
 		String signExcludes = properties.getProperty(SIGN_EXCLUDES);
 		if (signExcludes != null) {
 			String[] excludes = toStringArray(signExcludes, ","); //$NON-NLS-1$
 			Set<String> signExclusions = new HashSet<>();
 			for (String exclude : excludes) {
 				signExclusions.add(exclude);
 			}
 			return signExclusions;
 		}
 		return Collections.emptySet();
 	}

 	public static String concat(String[] array) {
 		String buffer = String.join(String.valueOf(' '), array);
 		return buffer;
 	}

 	public static String[] toStringArray(String input, String separator) {
 		StringTokenizer tokenizer = new StringTokenizer(input, separator);
 		int count = tokenizer.countTokens();
 		String[] result = new String[count];
 		for (int i = 0; i < count; i++) {
 			result[i] = tokenizer.nextToken().trim();
 		}
 		return result;
 	}

 	/**
 	 * Get the properties from the eclipse.inf file from the given jar. If the file
 	 * is not a jar, null is returned. If the file is a jar, but does not contain an
 	 * eclipse.inf file, an empty Properties object is returned.
 	 *
 	 * @param jarFile
 	 * @return The eclipse.inf properties for the given jar file
 	 */
 	public static Properties getEclipseInf(File jarFile, boolean verbose) {
 		if (jarFile == null || !jarFile.exists()) {
 			if (verbose)
 				System.out.println("Failed to obtain eclipse.inf due to missing jar file: " + jarFile); //$NON-NLS-1$
 			return null;
 		}
 		JarFile jar = null;
 		try {
 			jar = new JarFile(jarFile, false);
 			JarEntry mark = jar.getJarEntry(MARK_FILE_NAME);
 			if (mark != null) {
 				try (InputStream in = jar.getInputStream(mark)) {
 					Properties props = new Properties();
 					props.load(in);
 					return props;
 				}
 			}
 			return new Properties();
 		} catch (ZipException e) {
 			// not a jar, don't bother logging this.
 			return null;
 		} catch (IOException e) {
 			if (verbose) {
 				System.out.println("Failed to obtain eclipse.inf due to IOException: " + jarFile); //$NON-NLS-1$
 				e.printStackTrace();
 			}
 			return null;
 		} finally {
 			close(jar);
 		}
 	}

 	public static boolean shouldSkipJar(File input, boolean processAll, boolean verbose) {
 		Properties inf = getEclipseInf(input, verbose);
 		if (inf == null) {
 			// not a jar, could be a pack.gz
 			return false;
 		}
 		String exclude = inf.getProperty(MARK_EXCLUDE);

 		// was marked as exclude, we should skip
 		if (exclude != null && Boolean.parseBoolean(exclude))
 			return true;

 		// process all was set, don't skip
 		if (processAll)
 			return false;

 		// otherwise, we skip if not marked marked
 		String marked = inf.getProperty(MARK_PROPERTY);
 		return !Boolean.parseBoolean(marked);
 	}

 	/**
 	 * Stores the given properties in the output stream. We store the properties in
 	 * sorted order so that the signing hash doesn't change if the properties didn't
 	 * change.
 	 *
 	 * @param props
 	 * @param stream
 	 */
 	public static void storeProperties(Properties props, OutputStream stream) {
 		PrintStream printStream = new PrintStream(stream);
 		printStream.print("#Processed using Jarprocessor\n"); //$NON-NLS-1$
 		SortedMap<Object, Object> sorted = new TreeMap<>(props);
 		for (Object object : sorted.keySet()) {
 			String key = (String) object;
 			printStream.print(key);
 			printStream.print(" = "); //$NON-NLS-1$
 			printStream.print(sorted.get(key));
 			printStream.print("\n"); //$NON-NLS-1$

 		}
 		printStream.flush();
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2006, 2017 IBM Corporation and others.
	*
	* This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Contributors:
	* IBM - Initial API and implementation
	*******************************************************************************/
	package org.eclipse.equinox.internal.p2.jarprocessor;

	import java.io.*;
	import java.util.*;
	import java.util.jar.JarEntry;
	import java.util.jar.JarFile;
	import java.util.zip.ZipException;
	import org.eclipse.internal.provisional.equinox.p2.jarprocessor.JarProcessor;

	/**
	* @author aniefer@ca.ibm.com
	*
	*/
	public class Utils {
	public static final String MARK_FILE_NAME = "META-INF/eclipse.inf"; //$NON-NLS-1$

	/*
	* Properties found in outer pack.properties file
	*/
	// comma separated list of jars to exclude from sigining
	public static final String SIGN_EXCLUDES = "sign.excludes"; //$NON-NLS-1$
	// comma separated list of jars to exlclude from packing
	/**
	* @noreference This field is not intended to be referenced by clients.
	* @deprecated See <a href=
	* "https://bugs.eclipse.org/bugs/show_bug.cgi?id=572043">bug</a>
	* for details.
	*/
	@Deprecated(forRemoval = true, since = "1.2.0")
	public static final String PACK_EXCLUDES = "pack.excludes"; //$NON-NLS-1$
	// Suffix used when specifying arguments to use when running pack200 on a jar

	/**
	* @noreference This field is not intended to be referenced by clients.
	* @deprecated See <a href=
	* "https://bugs.eclipse.org/bugs/show_bug.cgi?id=572043">bug</a>
	* for details.
	*/
	@Deprecated(forRemoval = true, since = "1.2.0")
	public static final String PACK_ARGS_SUFFIX = ".pack.args"; //$NON-NLS-1$

	/*
	* Properties found in both pack.properties and eclipse.inf
	*/
	// Default arguments to use when running pack200.
	// Affects all jars when specified in pack.properties, affects children when
	// specified in eclipse.inf
	/**
	* @noreference This field is not intended to be referenced by clients.
	* @deprecated See <a href=
	* "https://bugs.eclipse.org/bugs/show_bug.cgi?id=572043">bug</a>
	* for details.
	*/
	@Deprecated(forRemoval = true, since = "1.2.0")
	public static final String DEFAULT_PACK_ARGS = "pack200.default.args"; //$NON-NLS-1$

	/*
	* Properties found in eclipse.inf file
	*/
	// This jar has been conditioned with pack200
	/**
	* @noreference This field is not intended to be referenced by clients.
	* @deprecated See <a href=
	* "https://bugs.eclipse.org/bugs/show_bug.cgi?id=572043">bug</a>
	* for details.
	*/
	@Deprecated(forRemoval = true, since = "1.2.0")
	public static final String MARK_PROPERTY = "pack200.conditioned"; //$NON-NLS-1$
	// Exclude this jar from processing
	public static final String MARK_EXCLUDE = "jarprocessor.exclude"; //$NON-NLS-1$
	// Exclude this jar from pack200
	public static final String MARK_EXCLUDE_PACK = "jarprocessor.exclude.pack"; //$NON-NLS-1$
	// Exclude this jar from signing
	public static final String MARK_EXCLUDE_SIGN = "jarprocessor.exclude.sign"; //$NON-NLS-1$
	// Exclude this jar's children from processing
	public static final String MARK_EXCLUDE_CHILDREN = "jarprocessor.exclude.children"; //$NON-NLS-1$
	// Exclude this jar's children from pack200
	public static final String MARK_EXCLUDE_CHILDREN_PACK = "jarprocessor.exclude.children.pack"; //$NON-NLS-1$
	// Exclude this jar's children from signing
	public static final String MARK_EXCLUDE_CHILDREN_SIGN = "jarprocessor.exclude.children.sign"; //$NON-NLS-1$
	// Arguments used in pack200 for this jar
	/**
	* @noreference This field is not intended to be referenced by clients.
	* @deprecated See <a href=
	* "https://bugs.eclipse.org/bugs/show_bug.cgi?id=572043">bug</a>
	* for details.
	*/
	@Deprecated(forRemoval = true, since = "1.2.0")
	public static final String PACK_ARGS = "pack200.args"; //$NON-NLS-1$
	/**
	* @noreference This field is not intended to be referenced by clients.
	* @deprecated See <a href=
	* "https://bugs.eclipse.org/bugs/show_bug.cgi?id=572043">bug</a>
	* for details.
	*/
	@Deprecated(forRemoval = true, since = "1.2.0")
	public static final String PACK200_PROPERTY = "org.eclipse.update.jarprocessor.pack200"; //$NON-NLS-1$
	public static final String JRE = "@jre"; //$NON-NLS-1$
	public static final String PATH = "@path"; //$NON-NLS-1$
	public static final String NONE = "@none"; //$NON-NLS-1$
	/**
	* @noreference This field is not intended to be referenced by clients.
	* @deprecated See <a href=
	* "https://bugs.eclipse.org/bugs/show_bug.cgi?id=572043">bug</a>
	* for details.
	*/
	@Deprecated(forRemoval = true, since = "1.2.0")
	public static final String PACKED_SUFFIX = ".pack.gz"; //$NON-NLS-1$
	public static final String JAR_SUFFIX = ".jar"; //$NON-NLS-1$

	public static final FileFilter JAR_FILTER = pathname -> pathname.isFile() && pathname.getName().endsWith(".jar"); //$NON-NLS-1$
	/**
	* @noreference This field is not intended to be referenced by clients.
	* @deprecated See <a href=
	* "https://bugs.eclipse.org/bugs/show_bug.cgi?id=572043">bug</a>
	* for details.
	*/
	@SuppressWarnings("removal")
	@Deprecated(forRemoval = true, since = "1.2.0")
	public static final FileFilter PACK_GZ_FILTER = pathname -> pathname.isFile()
	&& pathname.getName().endsWith(JarProcessor.PACKED_SUFFIX);

	public static void close(Object stream) {
	if (stream != null) {
	try {
	if (stream instanceof InputStream)
	((InputStream) stream).close();
	else if (stream instanceof OutputStream)
	((OutputStream) stream).close();
	else if (stream instanceof JarFile)
	((JarFile) stream).close();
	} catch (IOException e) {
	// ignore
	}
	}
	}

	/**
	* get the set of commands to try to execute pack/unpack
	*
	* @param cmd the command, either "pack200" or "unpack200"
	* @return String [] or null
	*
	* @noreference This method is not intended to be referenced by clients.
	* @deprecated See <a href=
	* "https://bugs.eclipse.org/bugs/show_bug.cgi?id=572043">bug</a>
	* for details.
	*/
	@Deprecated(forRemoval = true, since = "1.2.0")
	public static String[] getPack200Commands(String cmd) {
	String[] locations = null;
	String prop = System.getProperty(PACK200_PROPERTY);
	String javaHome = System.getProperty("java.home"); //$NON-NLS-1$
	if (null == prop) {
	locations = new String[] { javaHome + "/bin/" + cmd, cmd }; //$NON-NLS-1$
	} else
	switch (prop) {
	case NONE:
	return null;
	case JRE:
	locations = new String[] { javaHome + "/bin/" + cmd }; //$NON-NLS-1$
	break;
	case PATH:
	locations = new String[] { cmd };
	break;
	default:
	locations = new String[] { prop + "/" + cmd }; //$NON-NLS-1$
	break;
	}
	return locations;
	}

	/**
	* Transfers all available bytes from the given input stream to the given output
	* stream. Closes both streams if close == true, regardless of failure. Flushes
	* the destination stream if close == false
	*
	* @param source
	* @param destination
	* @param close
	* @throws IOException
	*/
	public static void transferStreams(InputStream source, OutputStream destination, boolean close) throws IOException {
	source = new BufferedInputStream(source);
	destination = new BufferedOutputStream(destination);
	try {
	byte[] buffer = new byte[8192];
	while (true) {
	int bytesRead = -1;
	if ((bytesRead = source.read(buffer)) == -1)
	break;
	destination.write(buffer, 0, bytesRead);
	}
	} finally {
	if (close) {
	close(source);
	close(destination);
	} else {
	destination.flush();
	}
	}
	}

	/**
	* Deletes all the files and directories from the given root down (inclusive).
	* Returns false if we could not delete some file or an exception occurred at
	* any point in the deletion. Even if an exception occurs, a best effort is made
	* to continue deleting.
	*/
	public static boolean clear(java.io.File root) {
	boolean result = clearChildren(root);
	try {
	if (root.exists())
	result &= root.delete();
	} catch (Exception e) {
	result = false;
	}
	return result;
	}

	/**
	* Deletes all the files and directories from the given root down, except for
	* the root itself. Returns false if we could not delete some file or an
	* exception occurred at any point in the deletion. Even if an exception occurs,
	* a best effort is made to continue deleting.
	*/
	public static boolean clearChildren(java.io.File root) {
	boolean result = true;
	if (root.isDirectory()) {
	String[] list = root.list();
	// for some unknown reason, list() can return null.
	// Just skip the children If it does.
	if (list != null)
	for (String list1 : list) {
	result &= clear(new java.io.File(root, list1));
	}
	}
	return result;
	}

	/**
	* @noreference This method is not intended to be referenced by clients.
	* @deprecated See <a href=
	* "https://bugs.eclipse.org/bugs/show_bug.cgi?id=572043">bug</a>
	* for details.
	*/
	@Deprecated(forRemoval = true, since = "1.2.0")
	public static Set<String> getPackExclusions(Properties properties) {
	if (properties == null)
	return Collections.emptySet();

	String packExcludes = properties.getProperty(PACK_EXCLUDES);
	if (packExcludes != null) {
	String[] excludes = toStringArray(packExcludes, ","); //$NON-NLS-1$
	Set<String> packExclusions = new HashSet<>();
	for (String exclude : excludes) {
	packExclusions.add(exclude);
	}
	return packExclusions;
	}
	return Collections.emptySet();
	}

	public static Set<String> getSignExclusions(Properties properties) {
	if (properties == null)
	return Collections.emptySet();
	String signExcludes = properties.getProperty(SIGN_EXCLUDES);
	if (signExcludes != null) {
	String[] excludes = toStringArray(signExcludes, ","); //$NON-NLS-1$
	Set<String> signExclusions = new HashSet<>();
	for (String exclude : excludes) {
	signExclusions.add(exclude);
	}
	return signExclusions;
	}
	return Collections.emptySet();
	}

	public static String concat(String[] array) {
	String buffer = String.join(String.valueOf(' '), array);
	return buffer;
	}

	public static String[] toStringArray(String input, String separator) {
	StringTokenizer tokenizer = new StringTokenizer(input, separator);
	int count = tokenizer.countTokens();
	String[] result = new String[count];
	for (int i = 0; i < count; i++) {
	result[i] = tokenizer.nextToken().trim();
	}
	return result;
	}

	/**
	* Get the properties from the eclipse.inf file from the given jar. If the file
	* is not a jar, null is returned. If the file is a jar, but does not contain an
	* eclipse.inf file, an empty Properties object is returned.
	*
	* @param jarFile
	* @return The eclipse.inf properties for the given jar file
	*/
	public static Properties getEclipseInf(File jarFile, boolean verbose) {
	if (jarFile == null \|\| !jarFile.exists()) {
	if (verbose)
	System.out.println("Failed to obtain eclipse.inf due to missing jar file: " + jarFile); //$NON-NLS-1$
	return null;
	}
	JarFile jar = null;
	try {
	jar = new JarFile(jarFile, false);
	JarEntry mark = jar.getJarEntry(MARK_FILE_NAME);
	if (mark != null) {
	try (InputStream in = jar.getInputStream(mark)) {
	Properties props = new Properties();
	props.load(in);
	return props;
	}
	}
	return new Properties();
	} catch (ZipException e) {
	// not a jar, don't bother logging this.
	return null;
	} catch (IOException e) {
	if (verbose) {
	System.out.println("Failed to obtain eclipse.inf due to IOException: " + jarFile); //$NON-NLS-1$
	e.printStackTrace();
	}
	return null;
	} finally {
	close(jar);
	}
	}

	public static boolean shouldSkipJar(File input, boolean processAll, boolean verbose) {
	Properties inf = getEclipseInf(input, verbose);
	if (inf == null) {
	// not a jar, could be a pack.gz
	return false;
	}
	String exclude = inf.getProperty(MARK_EXCLUDE);

	// was marked as exclude, we should skip
	if (exclude != null && Boolean.parseBoolean(exclude))
	return true;

	// process all was set, don't skip
	if (processAll)
	return false;

	// otherwise, we skip if not marked marked
	String marked = inf.getProperty(MARK_PROPERTY);
	return !Boolean.parseBoolean(marked);
	}

	/**
	* Stores the given properties in the output stream. We store the properties in
	* sorted order so that the signing hash doesn't change if the properties didn't
	* change.
	*
	* @param props
	* @param stream
	*/
	public static void storeProperties(Properties props, OutputStream stream) {
	PrintStream printStream = new PrintStream(stream);
	printStream.print("#Processed using Jarprocessor\n"); //$NON-NLS-1$
	SortedMap<Object, Object> sorted = new TreeMap<>(props);
	for (Object object : sorted.keySet()) {
	String key = (String) object;
	printStream.print(key);
	printStream.print(" = "); //$NON-NLS-1$
	printStream.print(sorted.get(key));
	printStream.print("\n"); //$NON-NLS-1$

	}
	printStream.flush();
	}
	}