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Glassfish example source code file (StringUtil.java)
The Glassfish StringUtil.java source code/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved. * * The contents of this file are subject to the terms of either the GNU * General Public License Version 2 only ("GPL") or the Common Development * and Distribution License("CDDL") (collectively, the "License"). You * may not use this file except in compliance with the License. You can * obtain a copy of the License at * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html * or packager/legal/LICENSE.txt. See the License for the specific * language governing permissions and limitations under the License. * * When distributing the software, include this License Header Notice in each * file and include the License file at packager/legal/LICENSE.txt. * * GPL Classpath Exception: * Oracle designates this particular file as subject to the "Classpath" * exception as provided by Oracle in the GPL Version 2 section of the License * file that accompanied this code. * * Modifications: * If applicable, add the following below the License Header, with the fields * enclosed by brackets [] replaced by your own identifying information: * "Portions Copyright [year] [name of copyright owner]" * * Contributor(s): * If you wish your version of this file to be governed by only the CDDL or * only the GPL Version 2, indicate your decision by adding "[Contributor] * elects to include this software in this distribution under the [CDDL or GPL * Version 2] license." If you don't indicate a single choice of license, a * recipient has the option to distribute your version of this file under * either the CDDL, the GPL Version 2 or to extend the choice of license to * its licensees as provided above. However, if you add GPL Version 2 code * and therefore, elected the GPL Version 2 license, then the option applies * only if the new code is made subject to such option by the copyright * holder. */ package org.glassfish.admin.amx.util; import javax.management.Attribute; import javax.management.AttributeList; import javax.management.ObjectName; import java.util.Map; import java.util.Set; import java.util.List; import java.util.Collection; import java.util.ArrayList; import java.util.concurrent.TimeUnit; import org.glassfish.admin.amx.util.jmx.JMXUtil; /** Escapes/unescapes strings */ public final class StringUtil { private StringUtil() { } public final static char QUOTE_CHAR = '\"'; public final static String QUOTE = "" + QUOTE_CHAR; /** Line separator as returned by System.getProperty() */ public final static String LS = System.getProperty("line.separator", "\n"); public static String quote(Object o) { return (quote(o, QUOTE_CHAR)); } public static String quote(Object o, char leftHandChar) { final String s = o == null ? "null" : toString(o); char leftChar = leftHandChar; char rightChar = leftHandChar; if (leftHandChar == '(') { rightChar = ')'; } else if (leftHandChar == '{') { rightChar = '}'; } else if (leftHandChar == '[') { rightChar = ']'; } else if (leftHandChar == '<') { rightChar = '>'; } else { // same char on both left and right } final String out = leftChar + s + rightChar; return (out); } public static String toHexString(byte theByte) { String result = Integer.toHexString(((int) theByte) & 0x000000FF); if (result.length() == 1) { result = "0" + result; } return (result); } public static String toHexString(byte[] bytes) { return (toHexString(bytes, null)); } public static String toHexString(byte[] bytes, String delim) { final StringBuffer buf = new StringBuffer(); if (bytes.length == 0) { // nothing } else if (delim == null || delim.length() == 0) { for (int i = 0; i < bytes.length; ++i) { buf.append(toHexString(bytes[i])); } } else { for (int i = 0; i < bytes.length; ++i) { buf.append(toHexString(bytes[i]) + delim); } // remove trailing delim buf.setLength(buf.length() - 1); } return (buf.toString()); } public static String stripSuffix( final String s, final String suffix) { String result = s; if (s.endsWith(suffix)) { result = s.substring(0, s.length() - suffix.length()); } return (result); } public static String replaceSuffix( final String s, final String fromSuffix, final String toSuffix) { if (!s.endsWith(fromSuffix)) { throw new IllegalArgumentException(fromSuffix); } return (stripSuffix(s, fromSuffix) + toSuffix); } public static String stripPrefix( final String s, final String prefix) { String result = s; if (s.startsWith(prefix)) { result = s.substring(prefix.length(), s.length()); } return (result); } public static String stripPrefixAndSuffix( final String s, final String prefix, final String suffix) { return stripPrefix(stripSuffix(s, suffix), prefix); } public static String upperCaseFirstLetter(final String s) { String result = s; if (s.length() >= 1) { result = s.substring(0, 1).toUpperCase() + s.substring(1, s.length()); } return (result); } public static String toString(final Object o) { String s = null; if (o instanceof String) { s = (String) o; } else if (o instanceof Throwable) { s = ExceptionUtil.toString((Throwable) o); } /* else if ( o instanceof ObjectName ) { s = JMXUtil.toString( (ObjectName)o ); } */ else if (o instanceof Attribute) { final Attribute a = (Attribute) o; s = a.getName() + "=" + toString(a.getValue()); } else if (o instanceof AttributeList) { final Map<String, Object> items = JMXUtil.attributeListToValueMap((AttributeList) o); s = "{" + MapUtil.toString(items) + "}"; } else if (o instanceof byte[]) { final byte[] b = byte[].class.cast(o); s = "byte[] of length " + b.length; } else if (o == null) { s = "null"; } else if (o instanceof Object[]) { s = toString(", ", (Object[]) o); } else { s = "" + o; } return s; } public static String toString(final String[] args) { return toString(", ", args); } public static String toString(final String delim, final String... args) { return toString(delim, (Object[]) args); } /** Turn an array (or varargs) set of Objects into a String using the specified delimiter. */ public static String toString(final String delim, final Object... args) { String result = null; if (args == null) { result = "" + null; } else if (args.length == 0) { result = ""; } else if (args.length == 1) { result = toString(args[ 0]); } else { final StringBuilder builder = new StringBuilder(); for (int i = 0; i < args.length - 1; ++i) { builder.append(toString(args[i])); builder.append(delim); } builder.append(toString(args[args.length - 1])); result = builder.toString(); } return result; } /** @return the prefix found, or null if not found */ public static String getPrefix( final Set<String> prefixes, final String s) { String result = null; for (final String prefix : prefixes) { if (s.startsWith(prefix)) { result = prefix; break; } } return result; } /** @return the String after stripping the prefix @throws IllegalArgumentException if no prefix found */ public static String findAndStripPrefix( final Set<String> prefixes, final String s) { final String prefix = getPrefix(prefixes, s); if (prefix == null) { throw new IllegalArgumentException(s); } return stripPrefix(s, prefix); } private static String NEWLINE_STR = null; public static String NEWLINE() { if (NEWLINE_STR == null) { NEWLINE_STR = System.getProperty("line.separator"); } return NEWLINE_STR; } private static String zeroPad(final long num) { String result = null; if (num >= 100) { result = "" + num; } else if (num >= 10) { result = "0" + num; } else { result = "00" + num; } return result; } private static double micros(final long nanos) { return (double) nanos / 1000; } private static double millis(final long nanos) { return (double) nanos / (1000 * 1000); } private static double seconds(final long nanos) { return (double) nanos / (1000 * 1000 * (long) 1000); } /** @param nanos elapsed nanoseconds @return a String describing the elapsed duration in seconds */ public static String getSecondsString(final long nanos) { return getTimingString(nanos, TimeUnit.SECONDS); } /** @param nanos elapsed nanoseconds @return a String describing the elapsed duration in seconds */ public static String getMillisString(final long nanos) { return getTimingString(nanos, TimeUnit.MILLISECONDS); } private static final String NANOS_FORMAT = "%d ns"; private static final String MICROS_FORMAT = "%.1f micros"; private static final String MILLIS_FORMAT = "%.1f ms"; private static final String SECONDS_FORMAT = "%.3f sec"; public static String getTimingString( final long nanos, final TimeUnit timeUnit) { String result = null; if (timeUnit == TimeUnit.NANOSECONDS) { result = String.format(NANOS_FORMAT, nanos); } else if (timeUnit == TimeUnit.MICROSECONDS) { result = String.format(MICROS_FORMAT, micros(nanos)); } else if (timeUnit == TimeUnit.MILLISECONDS) { result = String.format(MILLIS_FORMAT, millis(nanos)); } else if (timeUnit == TimeUnit.SECONDS) { result = String.format(SECONDS_FORMAT, seconds(nanos)); } return result; } /** Get a String representing the specified number of nanoseconds, choosing the appropriate units based on magnitude of the value. @param nanos elapsed nanoseconds @return a String describing the elapsed duration */ public static String getTimingString(final long nanos) { final long seconds = nanos / (1000 * 1000 * 1000); final long millis = nanos % (1000 * 1000 * 1000) / (1000 * 1000); final long micros = nanos % (1000 * 1000) / 1000; final long nanosMod = nanos % 1000; String runTimeString = null; final long MICROSECOND = 1000; final long MILLISECOND = 1000 * MICROSECOND; if (nanos < 10 * 1000) { runTimeString = nanos + " nanoseconds"; } else if (nanos < 1000 * 10 * 1000) { runTimeString = (nanos / MICROSECOND) + " microseconds"; } else { runTimeString = (nanos / MILLISECOND) + " milliseconds"; } return runTimeString; } /** @return String[] */ public static <T> String[] toStringArray(final Collection Other Glassfish examples (source code examples)Here is a short list of links related to this Glassfish StringUtil.java source code file: |
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