org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/util/Util.java - jdt/eclipse.jdt.core - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2005 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.compiler.util;

 import java.io.BufferedInputStream;
 import java.io.ByteArrayInputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.UnsupportedEncodingException;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipFile;
 import org.eclipse.jdt.core.compiler.CharOperation;

 public class Util implements SuffixConstants {

 	public interface Displayable {
 		String displayString(Object o);
 	}

 	private static final int DEFAULT_READING_SIZE = 8192;
 	public final static String UTF_8 = "UTF-8";	//$NON-NLS-1$
 	public static String LINE_SEPARATOR = System.getProperty("line.separator"); //$NON-NLS-1$

 	/**
 	 * Returns the given bytes as a char array using a given encoding (null means platform default).
 	 */
 	public static char[] bytesToChar(byte[] bytes, String encoding) throws IOException {

 		return getInputStreamAsCharArray(new ByteArrayInputStream(bytes), bytes.length, encoding);

 	}
 	/**
 	 * Returns the contents of the given file as a byte array.
 	 * @throws IOException if a problem occured reading the file.
 	 */
 	public static byte[] getFileByteContent(File file) throws IOException {
 		InputStream stream = null;
 		try {
 			stream = new BufferedInputStream(new FileInputStream(file));
 			return getInputStreamAsByteArray(stream, (int) file.length());
 		} finally {
 			if (stream != null) {
 				try {
 					stream.close();
 				} catch (IOException e) {
 					// ignore
 				}
 			}
 		}
 	}
 	/**
 	 * Returns the contents of the given file as a char array.
 	 * When encoding is null, then the platform default one is used
 	 * @throws IOException if a problem occured reading the file.
 	 */
 	public static char[] getFileCharContent(File file, String encoding) throws IOException {
 		InputStream stream = null;
 		try {
 			stream = new BufferedInputStream(new FileInputStream(file));
 			return getInputStreamAsCharArray(stream, (int) file.length(), encoding);
 		} finally {
 			if (stream != null) {
 				try {
 					stream.close();
 				} catch (IOException e) {
 					// ignore
 				}
 			}
 		}
 	}
 	/*
 	 * NIO support to get input stream as byte array.
 	 * Not used as with JDK 1.4.2 this support is slower than standard IO one...
 	 * Keep it as comment for future in case of next JDK versions improve performance
 	 * in this area...
 	 *
 	public static byte[] getInputStreamAsByteArray(FileInputStream stream, int length)
 		throws IOException {

 		FileChannel channel = stream.getChannel();
 		int size = (int)channel.size();
 		if (length >= 0 && length < size) size = length;
 		byte[] contents = new byte[size];
 		ByteBuffer buffer = ByteBuffer.wrap(contents);
 		channel.read(buffer);
 		return contents;
 	}
 	*/
 	/**
 	 * Returns the given input stream's contents as a byte array.
 	 * If a length is specified (ie. if length != -1), only length bytes
 	 * are returned. Otherwise all bytes in the stream are returned.
 	 * Note this doesn't close the stream.
 	 * @throws IOException if a problem occured reading the stream.
 	 */
 	public static byte[] getInputStreamAsByteArray(InputStream stream, int length)
 		throws IOException {
 		byte[] contents;
 		if (length == -1) {
 			contents = new byte[0];
 			int contentsLength = 0;
 			int amountRead = -1;
 			do {
 				int amountRequested = Math.max(stream.available(), DEFAULT_READING_SIZE);  // read at least 8K

 				// resize contents if needed
 				if (contentsLength + amountRequested > contents.length) {
 					System.arraycopy(
 						contents,
 						0,
 						contents = new byte[contentsLength + amountRequested],
 						0,
 						contentsLength);
 				}

 				// read as many bytes as possible
 				amountRead = stream.read(contents, contentsLength, amountRequested);

 				if (amountRead > 0) {
 					// remember length of contents
 					contentsLength += amountRead;
 				}
 			} while (amountRead != -1);

 			// resize contents if necessary
 			if (contentsLength < contents.length) {
 				System.arraycopy(
 					contents,
 					0,
 					contents = new byte[contentsLength],
 					0,
 					contentsLength);
 			}
 		} else {
 			contents = new byte[length];
 			int len = 0;
 			int readSize = 0;
 			while ((readSize != -1) && (len != length)) {
 				// See PR 1FMS89U
 				// We record first the read size. In this case len is the actual read size.
 				len += readSize;
 				readSize = stream.read(contents, len, length - len);
 			}
 		}

 		return contents;
 	}
 	/*
 	 * NIO support to get input stream as char array.
 	 * Not used as with JDK 1.4.2 this support is slower than standard IO one...
 	 * Keep it as comment for future in case of next JDK versions improve performance
 	 * in this area...
 	public static char[] getInputStreamAsCharArray(FileInputStream stream, int length, String encoding)
 		throws IOException {

 		FileChannel channel = stream.getChannel();
 		int size = (int)channel.size();
 		if (length >= 0 && length < size) size = length;
 		Charset charset = encoding==null?systemCharset:Charset.forName(encoding);
 		if (charset != null) {
 			MappedByteBuffer bbuffer = channel.map(FileChannel.MapMode.READ_ONLY, 0, size);
 		    CharsetDecoder decoder = charset.newDecoder();
 		    CharBuffer buffer = decoder.decode(bbuffer);
 		    char[] contents = new char[buffer.limit()];
 		    buffer.get(contents);
 		    return contents;
 		}
 		throw new UnsupportedCharsetException(SYSTEM_FILE_ENCODING);
 	}
 	*/
 	/**
 	 * Returns the given input stream's contents as a character array.
 	 * If a length is specified (ie. if length != -1), only length chars
 	 * are returned. Otherwise all chars in the stream are returned.
 	 * Note this doesn't close the stream.
 	 * @throws IOException if a problem occured reading the stream.
 	 */
 	public static char[] getInputStreamAsCharArray(InputStream stream, int length, String encoding)
 		throws IOException {
 		InputStreamReader reader = null;
 		try {
 			reader = encoding == null
 						? new InputStreamReader(stream)
 						: new InputStreamReader(stream, encoding);
 		} catch (UnsupportedEncodingException e) {
 			// encoding is not supported
 			reader =  new InputStreamReader(stream);
 		}
 		char[] contents;
 		if (length == -1) {
 			contents = CharOperation.NO_CHAR;
 			int contentsLength = 0;
 			int amountRead = -1;
 			do {
 				int amountRequested = Math.max(stream.available(), DEFAULT_READING_SIZE);  // read at least 8K

 				// resize contents if needed
 				if (contentsLength + amountRequested > contents.length) {
 					System.arraycopy(
 						contents,
 						0,
 						contents = new char[contentsLength + amountRequested],
 						0,
 						contentsLength);
 				}

 				// read as many chars as possible
 				amountRead = reader.read(contents, contentsLength, amountRequested);

 				if (amountRead > 0) {
 					// remember length of contents
 					contentsLength += amountRead;
 				}
 			} while (amountRead != -1);

 			// Do not keep first character for UTF-8 BOM encoding
 			int start = 0;
 			if (contentsLength > 0 && UTF_8.equals(encoding)) {
 				if (contents[0] == 0xFEFF) { // if BOM char then skip
 					contentsLength--;
 					start = 1;
 				}
 			}
 			// resize contents if necessary
 			if (contentsLength < contents.length) {
 				System.arraycopy(
 					contents,
 					start,
 					contents = new char[contentsLength],
 					0,
 					contentsLength);
 			}
 		} else {
 			contents = new char[length];
 			int len = 0;
 			int readSize = 0;
 			while ((readSize != -1) && (len != length)) {
 				// See PR 1FMS89U
 				// We record first the read size. In this case len is the actual read size.
 				len += readSize;
 				readSize = reader.read(contents, len, length - len);
 			}
 			// Do not keep first character for UTF-8 BOM encoding
 			int start = 0;
 			if (length > 0 && UTF_8.equals(encoding)) {
 				if (contents[0] == 0xFEFF) { // if BOM char then skip
 					len--;
 					start = 1;
 				}
 			}
 			// See PR 1FMS89U
 			// Now we need to resize in case the default encoding used more than one byte for each
 			// character
 			if (len != length)
 				System.arraycopy(contents, start, (contents = new char[len]), 0, len);
 		}

 		return contents;
 	}

 	/**
 	 * Returns the contents of the given zip entry as a byte array.
 	 * @throws IOException if a problem occured reading the zip entry.
 	 */
 	public static byte[] getZipEntryByteContent(ZipEntry ze, ZipFile zip)
 		throws IOException {

 		InputStream stream = null;
 		try {
 			stream = new BufferedInputStream(zip.getInputStream(ze));
 			return getInputStreamAsByteArray(stream, (int) ze.getSize());
 		} finally {
 			if (stream != null) {
 				try {
 					stream.close();
 				} catch (IOException e) {
 					// ignore
 				}
 			}
 		}
 	}

 	/**
 	 * Returns true iff str.toLowerCase().endsWith(".jar") || str.toLowerCase().endsWith(".zip")
 	 * implementation is not creating extra strings.
 	 */
 	public final static boolean isArchiveFileName(String name) {
 		int nameLength = name == null ? 0 : name.length();
 		int suffixLength = SUFFIX_JAR.length;
 		if (nameLength < suffixLength) return false;

 		// try to match as JAR file
 		for (int i = 0; i < suffixLength; i++) {
 			char c = name.charAt(nameLength - i - 1);
 			int suffixIndex = suffixLength - i - 1;
 			if (c != SUFFIX_jar[suffixIndex] && c != SUFFIX_JAR[suffixIndex]) {

 				// try to match as ZIP file
 				suffixLength = SUFFIX_ZIP.length;
 				if (nameLength < suffixLength) return false;
 				for (int j = 0; j < suffixLength; j++) {
 					c = name.charAt(nameLength - j - 1);
 					suffixIndex = suffixLength - j - 1;
 					if (c != SUFFIX_zip[suffixIndex] && c != SUFFIX_ZIP[suffixIndex]) return false;
 				}
 				return true;
 			}
 		}
 		return true;
 	}
 	/**
 	 * Returns true iff str.toLowerCase().endsWith(".class")
 	 * implementation is not creating extra strings.
 	 */
 	public final static boolean isClassFileName(char[] name) {
 		int nameLength = name == null ? 0 : name.length;
 		int suffixLength = SUFFIX_CLASS.length;
 		if (nameLength < suffixLength) return false;

 		for (int i = 0, offset = nameLength - suffixLength; i < suffixLength; i++) {
 			char c = name[offset + i];
 			if (c != SUFFIX_class[i] && c != SUFFIX_CLASS[i]) return false;
 		}
 		return true;
 	}
 	/**
 	 * Returns true iff str.toLowerCase().endsWith(".class")
 	 * implementation is not creating extra strings.
 	 */
 	public final static boolean isClassFileName(String name) {
 		int nameLength = name == null ? 0 : name.length();
 		int suffixLength = SUFFIX_CLASS.length;
 		if (nameLength < suffixLength) return false;

 		for (int i = 0; i < suffixLength; i++) {
 			char c = name.charAt(nameLength - i - 1);
 			int suffixIndex = suffixLength - i - 1;
 			if (c != SUFFIX_class[suffixIndex] && c != SUFFIX_CLASS[suffixIndex]) return false;
 		}
 		return true;
 	}
 	/* TODO (philippe) should consider promoting it to CharOperation
 	 * Returns whether the given resource path matches one of the inclusion/exclusion
 	 * patterns.
 	 * NOTE: should not be asked directly using pkg root pathes
 	 * @see IClasspathEntry#getInclusionPatterns
 	 * @see IClasspathEntry#getExclusionPatterns
 	 */
 	public final static boolean isExcluded(char[] path, char[][] inclusionPatterns, char[][] exclusionPatterns, boolean isFolderPath) {
 		if (inclusionPatterns == null && exclusionPatterns == null) return false;

 		inclusionCheck: if (inclusionPatterns != null) {
 			for (int i = 0, length = inclusionPatterns.length; i < length; i++) {
 				char[] pattern = inclusionPatterns[i];
 				char[] folderPattern = pattern;
 				if (isFolderPath) {
 					int lastSlash = CharOperation.lastIndexOf('/', pattern);
 					if (lastSlash != -1 && lastSlash != pattern.length-1){ // trailing slash -> adds '**' for free (see http://ant.apache.org/manual/dirtasks.html)
 						int star = CharOperation.indexOf('*', pattern, lastSlash);
 						if ((star == -1
 								|| star >= pattern.length-1
 								|| pattern[star+1] != '*')) {
 							folderPattern = CharOperation.subarray(pattern, 0, lastSlash);
 						}
 					}
 				}
 				if (CharOperation.pathMatch(folderPattern, path, true, '/')) {
 					break inclusionCheck;
 				}
 			}
 			return true; // never included
 		}
 		if (isFolderPath) {
 			path = CharOperation.concat(path, new char[] {'*'}, '/');
 		}
 		if (exclusionPatterns != null) {
 			for (int i = 0, length = exclusionPatterns.length; i < length; i++) {
 				if (CharOperation.pathMatch(exclusionPatterns[i], path, true, '/')) {
 					return true;
 				}
 			}
 		}
 		return false;
 	}
 	/**
 	 * Returns true iff str.toLowerCase().endsWith(".java")
 	 * implementation is not creating extra strings.
 	 */
 	public final static boolean isJavaFileName(char[] name) {
 		int nameLength = name == null ? 0 : name.length;
 		int suffixLength = SUFFIX_JAVA.length;
 		if (nameLength < suffixLength) return false;

 		for (int i = 0, offset = nameLength - suffixLength; i < suffixLength; i++) {
 			char c = name[offset + i];
 			if (c != SUFFIX_java[i] && c != SUFFIX_JAVA[i]) return false;
 		}
 		return true;
 	}
 	/**
 	 * Returns true iff str.toLowerCase().endsWith(".java")
 	 * implementation is not creating extra strings.
 	 */
 	public final static boolean isJavaFileName(String name) {
 		int nameLength = name == null ? 0 : name.length();
 		int suffixLength = SUFFIX_JAVA.length;
 		if (nameLength < suffixLength) return false;

 		for (int i = 0; i < suffixLength; i++) {
 			char c = name.charAt(nameLength - i - 1);
 			int suffixIndex = suffixLength - i - 1;
 			if (c != SUFFIX_java[suffixIndex] && c != SUFFIX_JAVA[suffixIndex]) return false;
 		}
 		return true;
 	}

 	/**
 	 * Converts a boolean value into Boolean.
 	 * @param bool The boolean to convert
 	 * @return The corresponding Boolean object (TRUE or FALSE).
 	 */
 	public static Boolean toBoolean(boolean bool) {
 		if (bool) {
 			return Boolean.TRUE;
 		} else {
 			return Boolean.FALSE;
 		}
 	}
 	/**
 	 * Converts an array of Objects into String.
 	 */
 	public static String toString(Object[] objects) {
 		return toString(objects,
 			new Displayable(){
 				public String displayString(Object o) {
 					if (o == null) return "null"; //$NON-NLS-1$
 					return o.toString();
 				}
 			});
 	}

 	/**
 	 * Converts an array of Objects into String.
 	 */
 	public static String toString(Object[] objects, Displayable renderer) {
 		if (objects == null) return ""; //$NON-NLS-1$
 		StringBuffer buffer = new StringBuffer(10);
 		for (int i = 0; i < objects.length; i++){
 			if (i > 0) buffer.append(", "); //$NON-NLS-1$
 			buffer.append(renderer.displayString(objects[i]));
 		}
 		return buffer.toString();
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2005 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.compiler.util;

	import java.io.BufferedInputStream;
	import java.io.ByteArrayInputStream;
	import java.io.File;
	import java.io.FileInputStream;
	import java.io.IOException;
	import java.io.InputStream;
	import java.io.InputStreamReader;
	import java.io.UnsupportedEncodingException;
	import java.util.zip.ZipEntry;
	import java.util.zip.ZipFile;
	import org.eclipse.jdt.core.compiler.CharOperation;

	public class Util implements SuffixConstants {

	public interface Displayable {
	String displayString(Object o);
	}

	private static final int DEFAULT_READING_SIZE = 8192;
	public final static String UTF_8 = "UTF-8"; //$NON-NLS-1$
	public static String LINE_SEPARATOR = System.getProperty("line.separator"); //$NON-NLS-1$

	/**
	* Returns the given bytes as a char array using a given encoding (null means platform default).
	*/
	public static char[] bytesToChar(byte[] bytes, String encoding) throws IOException {

	return getInputStreamAsCharArray(new ByteArrayInputStream(bytes), bytes.length, encoding);

	}
	/**
	* Returns the contents of the given file as a byte array.
	* @throws IOException if a problem occured reading the file.
	*/
	public static byte[] getFileByteContent(File file) throws IOException {
	InputStream stream = null;
	try {
	stream = new BufferedInputStream(new FileInputStream(file));
	return getInputStreamAsByteArray(stream, (int) file.length());
	} finally {
	if (stream != null) {
	try {
	stream.close();
	} catch (IOException e) {
	// ignore
	}
	}
	}
	}
	/**
	* Returns the contents of the given file as a char array.
	* When encoding is null, then the platform default one is used
	* @throws IOException if a problem occured reading the file.
	*/
	public static char[] getFileCharContent(File file, String encoding) throws IOException {
	InputStream stream = null;
	try {
	stream = new BufferedInputStream(new FileInputStream(file));
	return getInputStreamAsCharArray(stream, (int) file.length(), encoding);
	} finally {
	if (stream != null) {
	try {
	stream.close();
	} catch (IOException e) {
	// ignore
	}
	}
	}
	}
	/*
	* NIO support to get input stream as byte array.
	* Not used as with JDK 1.4.2 this support is slower than standard IO one...
	* Keep it as comment for future in case of next JDK versions improve performance
	* in this area...
	*
	public static byte[] getInputStreamAsByteArray(FileInputStream stream, int length)
	throws IOException {

	FileChannel channel = stream.getChannel();
	int size = (int)channel.size();
	if (length >= 0 && length < size) size = length;
	byte[] contents = new byte[size];
	ByteBuffer buffer = ByteBuffer.wrap(contents);
	channel.read(buffer);
	return contents;
	}
	*/
	/**
	* Returns the given input stream's contents as a byte array.
	* If a length is specified (ie. if length != -1), only length bytes
	* are returned. Otherwise all bytes in the stream are returned.
	* Note this doesn't close the stream.
	* @throws IOException if a problem occured reading the stream.
	*/
	public static byte[] getInputStreamAsByteArray(InputStream stream, int length)
	throws IOException {
	byte[] contents;
	if (length == -1) {
	contents = new byte[0];
	int contentsLength = 0;
	int amountRead = -1;
	do {
	int amountRequested = Math.max(stream.available(), DEFAULT_READING_SIZE); // read at least 8K

	// resize contents if needed
	if (contentsLength + amountRequested > contents.length) {
	System.arraycopy(
	contents,
	0,
	contents = new byte[contentsLength + amountRequested],
	0,
	contentsLength);
	}

	// read as many bytes as possible
	amountRead = stream.read(contents, contentsLength, amountRequested);

	if (amountRead > 0) {
	// remember length of contents
	contentsLength += amountRead;
	}
	} while (amountRead != -1);

	// resize contents if necessary
	if (contentsLength < contents.length) {
	System.arraycopy(
	contents,
	0,
	contents = new byte[contentsLength],
	0,
	contentsLength);
	}
	} else {
	contents = new byte[length];
	int len = 0;
	int readSize = 0;
	while ((readSize != -1) && (len != length)) {
	// See PR 1FMS89U
	// We record first the read size. In this case len is the actual read size.
	len += readSize;
	readSize = stream.read(contents, len, length - len);
	}
	}

	return contents;
	}
	/*
	* NIO support to get input stream as char array.
	* Not used as with JDK 1.4.2 this support is slower than standard IO one...
	* Keep it as comment for future in case of next JDK versions improve performance
	* in this area...
	public static char[] getInputStreamAsCharArray(FileInputStream stream, int length, String encoding)
	throws IOException {

	FileChannel channel = stream.getChannel();
	int size = (int)channel.size();
	if (length >= 0 && length < size) size = length;
	Charset charset = encoding==null?systemCharset:Charset.forName(encoding);
	if (charset != null) {
	MappedByteBuffer bbuffer = channel.map(FileChannel.MapMode.READ_ONLY, 0, size);
	CharsetDecoder decoder = charset.newDecoder();
	CharBuffer buffer = decoder.decode(bbuffer);
	char[] contents = new char[buffer.limit()];
	buffer.get(contents);
	return contents;
	}
	throw new UnsupportedCharsetException(SYSTEM_FILE_ENCODING);
	}
	*/
	/**
	* Returns the given input stream's contents as a character array.
	* If a length is specified (ie. if length != -1), only length chars
	* are returned. Otherwise all chars in the stream are returned.
	* Note this doesn't close the stream.
	* @throws IOException if a problem occured reading the stream.
	*/
	public static char[] getInputStreamAsCharArray(InputStream stream, int length, String encoding)
	throws IOException {
	InputStreamReader reader = null;
	try {
	reader = encoding == null
	? new InputStreamReader(stream)
	: new InputStreamReader(stream, encoding);
	} catch (UnsupportedEncodingException e) {
	// encoding is not supported
	reader = new InputStreamReader(stream);
	}
	char[] contents;
	if (length == -1) {
	contents = CharOperation.NO_CHAR;
	int contentsLength = 0;
	int amountRead = -1;
	do {
	int amountRequested = Math.max(stream.available(), DEFAULT_READING_SIZE); // read at least 8K

	// resize contents if needed
	if (contentsLength + amountRequested > contents.length) {
	System.arraycopy(
	contents,
	0,
	contents = new char[contentsLength + amountRequested],
	0,
	contentsLength);
	}

	// read as many chars as possible
	amountRead = reader.read(contents, contentsLength, amountRequested);

	if (amountRead > 0) {
	// remember length of contents
	contentsLength += amountRead;
	}
	} while (amountRead != -1);

	// Do not keep first character for UTF-8 BOM encoding
	int start = 0;
	if (contentsLength > 0 && UTF_8.equals(encoding)) {
	if (contents[0] == 0xFEFF) { // if BOM char then skip
	contentsLength--;
	start = 1;
	}
	}
	// resize contents if necessary
	if (contentsLength < contents.length) {
	System.arraycopy(
	contents,
	start,
	contents = new char[contentsLength],
	0,
	contentsLength);
	}
	} else {
	contents = new char[length];
	int len = 0;
	int readSize = 0;
	while ((readSize != -1) && (len != length)) {
	// See PR 1FMS89U
	// We record first the read size. In this case len is the actual read size.
	len += readSize;
	readSize = reader.read(contents, len, length - len);
	}
	// Do not keep first character for UTF-8 BOM encoding
	int start = 0;
	if (length > 0 && UTF_8.equals(encoding)) {
	if (contents[0] == 0xFEFF) { // if BOM char then skip
	len--;
	start = 1;
	}
	}
	// See PR 1FMS89U
	// Now we need to resize in case the default encoding used more than one byte for each
	// character
	if (len != length)
	System.arraycopy(contents, start, (contents = new char[len]), 0, len);
	}

	return contents;
	}

	/**
	* Returns the contents of the given zip entry as a byte array.
	* @throws IOException if a problem occured reading the zip entry.
	*/
	public static byte[] getZipEntryByteContent(ZipEntry ze, ZipFile zip)
	throws IOException {

	InputStream stream = null;
	try {
	stream = new BufferedInputStream(zip.getInputStream(ze));
	return getInputStreamAsByteArray(stream, (int) ze.getSize());
	} finally {
	if (stream != null) {
	try {
	stream.close();
	} catch (IOException e) {
	// ignore
	}
	}
	}
	}

	/**
	* Returns true iff str.toLowerCase().endsWith(".jar") \|\| str.toLowerCase().endsWith(".zip")
	* implementation is not creating extra strings.
	*/
	public final static boolean isArchiveFileName(String name) {
	int nameLength = name == null ? 0 : name.length();
	int suffixLength = SUFFIX_JAR.length;
	if (nameLength < suffixLength) return false;

	// try to match as JAR file
	for (int i = 0; i < suffixLength; i++) {
	char c = name.charAt(nameLength - i - 1);
	int suffixIndex = suffixLength - i - 1;
	if (c != SUFFIX_jar[suffixIndex] && c != SUFFIX_JAR[suffixIndex]) {

	// try to match as ZIP file
	suffixLength = SUFFIX_ZIP.length;
	if (nameLength < suffixLength) return false;
	for (int j = 0; j < suffixLength; j++) {
	c = name.charAt(nameLength - j - 1);
	suffixIndex = suffixLength - j - 1;
	if (c != SUFFIX_zip[suffixIndex] && c != SUFFIX_ZIP[suffixIndex]) return false;
	}
	return true;
	}
	}
	return true;
	}
	/**
	* Returns true iff str.toLowerCase().endsWith(".class")
	* implementation is not creating extra strings.
	*/
	public final static boolean isClassFileName(char[] name) {
	int nameLength = name == null ? 0 : name.length;
	int suffixLength = SUFFIX_CLASS.length;
	if (nameLength < suffixLength) return false;

	for (int i = 0, offset = nameLength - suffixLength; i < suffixLength; i++) {
	char c = name[offset + i];
	if (c != SUFFIX_class[i] && c != SUFFIX_CLASS[i]) return false;
	}
	return true;
	}
	/**
	* Returns true iff str.toLowerCase().endsWith(".class")
	* implementation is not creating extra strings.
	*/
	public final static boolean isClassFileName(String name) {
	int nameLength = name == null ? 0 : name.length();
	int suffixLength = SUFFIX_CLASS.length;
	if (nameLength < suffixLength) return false;

	for (int i = 0; i < suffixLength; i++) {
	char c = name.charAt(nameLength - i - 1);
	int suffixIndex = suffixLength - i - 1;
	if (c != SUFFIX_class[suffixIndex] && c != SUFFIX_CLASS[suffixIndex]) return false;
	}
	return true;
	}
	/* TODO (philippe) should consider promoting it to CharOperation
	* Returns whether the given resource path matches one of the inclusion/exclusion
	* patterns.
	* NOTE: should not be asked directly using pkg root pathes
	* @see IClasspathEntry#getInclusionPatterns
	* @see IClasspathEntry#getExclusionPatterns
	*/
	public final static boolean isExcluded(char[] path, char[][] inclusionPatterns, char[][] exclusionPatterns, boolean isFolderPath) {
	if (inclusionPatterns == null && exclusionPatterns == null) return false;

	inclusionCheck: if (inclusionPatterns != null) {
	for (int i = 0, length = inclusionPatterns.length; i < length; i++) {
	char[] pattern = inclusionPatterns[i];
	char[] folderPattern = pattern;
	if (isFolderPath) {
	int lastSlash = CharOperation.lastIndexOf('/', pattern);
	if (lastSlash != -1 && lastSlash != pattern.length-1){ // trailing slash -> adds '**' for free (see http://ant.apache.org/manual/dirtasks.html)
	int star = CharOperation.indexOf('*', pattern, lastSlash);
	if ((star == -1
	\|\| star >= pattern.length-1
	\|\| pattern[star+1] != '*')) {
	folderPattern = CharOperation.subarray(pattern, 0, lastSlash);
	}
	}
	}
	if (CharOperation.pathMatch(folderPattern, path, true, '/')) {
	break inclusionCheck;
	}
	}
	return true; // never included
	}
	if (isFolderPath) {
	path = CharOperation.concat(path, new char[] {'*'}, '/');
	}
	if (exclusionPatterns != null) {
	for (int i = 0, length = exclusionPatterns.length; i < length; i++) {
	if (CharOperation.pathMatch(exclusionPatterns[i], path, true, '/')) {
	return true;
	}
	}
	}
	return false;
	}
	/**
	* Returns true iff str.toLowerCase().endsWith(".java")
	* implementation is not creating extra strings.
	*/
	public final static boolean isJavaFileName(char[] name) {
	int nameLength = name == null ? 0 : name.length;
	int suffixLength = SUFFIX_JAVA.length;
	if (nameLength < suffixLength) return false;

	for (int i = 0, offset = nameLength - suffixLength; i < suffixLength; i++) {
	char c = name[offset + i];
	if (c != SUFFIX_java[i] && c != SUFFIX_JAVA[i]) return false;
	}
	return true;
	}
	/**
	* Returns true iff str.toLowerCase().endsWith(".java")
	* implementation is not creating extra strings.
	*/
	public final static boolean isJavaFileName(String name) {
	int nameLength = name == null ? 0 : name.length();
	int suffixLength = SUFFIX_JAVA.length;
	if (nameLength < suffixLength) return false;

	for (int i = 0; i < suffixLength; i++) {
	char c = name.charAt(nameLength - i - 1);
	int suffixIndex = suffixLength - i - 1;
	if (c != SUFFIX_java[suffixIndex] && c != SUFFIX_JAVA[suffixIndex]) return false;
	}
	return true;
	}

	/**
	* Converts a boolean value into Boolean.
	* @param bool The boolean to convert
	* @return The corresponding Boolean object (TRUE or FALSE).
	*/
	public static Boolean toBoolean(boolean bool) {
	if (bool) {
	return Boolean.TRUE;
	} else {
	return Boolean.FALSE;
	}
	}
	/**
	* Converts an array of Objects into String.
	*/
	public static String toString(Object[] objects) {
	return toString(objects,
	new Displayable(){
	public String displayString(Object o) {
	if (o == null) return "null"; //$NON-NLS-1$
	return o.toString();
	}
	});
	}

	/**
	* Converts an array of Objects into String.
	*/
	public static String toString(Object[] objects, Displayable renderer) {
	if (objects == null) return ""; //$NON-NLS-1$
	StringBuffer buffer = new StringBuffer(10);
	for (int i = 0; i < objects.length; i++){
	if (i > 0) buffer.append(", "); //$NON-NLS-1$
	buffer.append(renderer.displayString(objects[i]));
	}
	return buffer.toString();
	}
	}