[3504] | 1 | // License: GPL. For details, see LICENSE file.
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| 2 | package org.openstreetmap.josm.tools;
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| 3 |
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[9296] | 4 | import static org.openstreetmap.josm.tools.I18n.marktr;
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[6354] | 5 | import static org.openstreetmap.josm.tools.I18n.tr;
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| 6 | import static org.openstreetmap.josm.tools.I18n.trn;
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| 7 |
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[3859] | 8 | import java.awt.Color;
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[8994] | 9 | import java.awt.Font;
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| 10 | import java.awt.font.FontRenderContext;
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| 11 | import java.awt.font.GlyphVector;
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[5868] | 12 | import java.io.BufferedReader;
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[8568] | 13 | import java.io.ByteArrayOutputStream;
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[5874] | 14 | import java.io.Closeable;
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[4065] | 15 | import java.io.File;
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| 16 | import java.io.IOException;
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| 17 | import java.io.InputStream;
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[5868] | 18 | import java.io.InputStreamReader;
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[6972] | 19 | import java.io.UnsupportedEncodingException;
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[10223] | 20 | import java.lang.reflect.AccessibleObject;
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[6615] | 21 | import java.net.MalformedURLException;
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[5587] | 22 | import java.net.URL;
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[8304] | 23 | import java.net.URLDecoder;
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[6972] | 24 | import java.net.URLEncoder;
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[7082] | 25 | import java.nio.charset.StandardCharsets;
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[7003] | 26 | import java.nio.file.Files;
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| 27 | import java.nio.file.Path;
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| 28 | import java.nio.file.StandardCopyOption;
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[10223] | 29 | import java.security.AccessController;
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[4403] | 30 | import java.security.MessageDigest;
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| 31 | import java.security.NoSuchAlgorithmException;
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[10223] | 32 | import java.security.PrivilegedAction;
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[8994] | 33 | import java.text.Bidi;
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[12219] | 34 | import java.text.DateFormat;
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[4069] | 35 | import java.text.MessageFormat;
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[12219] | 36 | import java.text.ParseException;
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[5578] | 37 | import java.util.AbstractCollection;
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| 38 | import java.util.AbstractList;
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[4668] | 39 | import java.util.ArrayList;
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[6221] | 40 | import java.util.Arrays;
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[3848] | 41 | import java.util.Collection;
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[6652] | 42 | import java.util.Collections;
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[12219] | 43 | import java.util.Date;
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[4816] | 44 | import java.util.Iterator;
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[4668] | 45 | import java.util.List;
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[8404] | 46 | import java.util.Locale;
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[12987] | 47 | import java.util.Optional;
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[12830] | 48 | import java.util.concurrent.ExecutionException;
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[9352] | 49 | import java.util.concurrent.Executor;
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[9351] | 50 | import java.util.concurrent.ForkJoinPool;
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| 51 | import java.util.concurrent.ForkJoinWorkerThread;
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[8602] | 52 | import java.util.concurrent.ThreadFactory;
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[11288] | 53 | import java.util.concurrent.TimeUnit;
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[8734] | 54 | import java.util.concurrent.atomic.AtomicLong;
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[12604] | 55 | import java.util.function.Consumer;
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[10692] | 56 | import java.util.function.Function;
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[10691] | 57 | import java.util.function.Predicate;
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[6538] | 58 | import java.util.regex.Matcher;
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[6823] | 59 | import java.util.regex.Pattern;
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[12594] | 60 | import java.util.stream.Stream;
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[5874] | 61 | import java.util.zip.ZipFile;
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[3848] | 62 |
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[8287] | 63 | import javax.xml.XMLConstants;
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[10404] | 64 | import javax.xml.parsers.DocumentBuilder;
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| 65 | import javax.xml.parsers.DocumentBuilderFactory;
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[8287] | 66 | import javax.xml.parsers.ParserConfigurationException;
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| 67 | import javax.xml.parsers.SAXParser;
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| 68 | import javax.xml.parsers.SAXParserFactory;
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| 69 |
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[12846] | 70 | import org.openstreetmap.josm.spi.preferences.Config;
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[10404] | 71 | import org.w3c.dom.Document;
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[8347] | 72 | import org.xml.sax.InputSource;
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[8287] | 73 | import org.xml.sax.SAXException;
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[8347] | 74 | import org.xml.sax.helpers.DefaultHandler;
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[5587] | 75 |
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[4069] | 76 | /**
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| 77 | * Basic utils, that can be useful in different parts of the program.
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| 78 | */
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[6362] | 79 | public final class Utils {
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[3504] | 80 |
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[9231] | 81 | /** Pattern matching white spaces */
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[6823] | 82 | public static final Pattern WHITE_SPACES_PATTERN = Pattern.compile("\\s+");
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| 83 |
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[11288] | 84 | private static final long MILLIS_OF_SECOND = TimeUnit.SECONDS.toMillis(1);
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| 85 | private static final long MILLIS_OF_MINUTE = TimeUnit.MINUTES.toMillis(1);
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| 86 | private static final long MILLIS_OF_HOUR = TimeUnit.HOURS.toMillis(1);
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| 87 | private static final long MILLIS_OF_DAY = TimeUnit.DAYS.toMillis(1);
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[6806] | 88 |
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[10287] | 89 | /**
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| 90 | * A list of all characters allowed in URLs
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| 91 | */
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[6999] | 92 | public static final String URL_CHARS = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~:/?#[]@!$&'()*+,;=%";
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| 93 |
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[9419] | 94 | private static final char[] DEFAULT_STRIP = {'\u200B', '\uFEFF'};
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[8567] | 95 |
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[9954] | 96 | private static final String[] SIZE_UNITS = {"B", "kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"};
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| 97 |
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[12015] | 98 | // Constants backported from Java 9, see https://bugs.openjdk.java.net/browse/JDK-4477961
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[12013] | 99 | private static final double TO_DEGREES = 180.0 / Math.PI;
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| 100 | private static final double TO_RADIANS = Math.PI / 180.0;
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| 101 |
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[10287] | 102 | private Utils() {
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| 103 | // Hide default constructor for utils classes
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| 104 | }
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| 105 |
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[6772] | 106 | /**
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[10287] | 107 | * Checks if an item that is an instance of clazz exists in the collection
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| 108 | * @param <T> The collection type.
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| 109 | * @param collection The collection
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| 110 | * @param clazz The class to search for.
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| 111 | * @return <code>true</code> if that item exists in the collection.
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| 112 | */
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| 113 | public static <T> boolean exists(Iterable<T> collection, Class<? extends T> clazz) {
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[10715] | 114 | CheckParameterUtil.ensureParameterNotNull(clazz, "clazz");
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[10742] | 115 | return StreamUtils.toStream(collection).anyMatch(clazz::isInstance);
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[3836] | 116 | }
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| 117 |
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[10287] | 118 | /**
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| 119 | * Finds the first item in the iterable for which the predicate matches.
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| 120 | * @param <T> The iterable type.
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| 121 | * @param collection The iterable to search in.
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| 122 | * @param predicate The predicate to match
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| 123 | * @return the item or <code>null</code> if there was not match.
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| 124 | */
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[3836] | 125 | public static <T> T find(Iterable<? extends T> collection, Predicate<? super T> predicate) {
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| 126 | for (T item : collection) {
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[10691] | 127 | if (predicate.test(item)) {
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[3836] | 128 | return item;
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[10287] | 129 | }
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[3836] | 130 | }
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| 131 | return null;
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| 132 | }
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| 133 |
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[10287] | 134 | /**
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| 135 | * Finds the first item in the iterable which is of the given type.
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| 136 | * @param <T> The iterable type.
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| 137 | * @param collection The iterable to search in.
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| 138 | * @param clazz The class to search for.
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| 139 | * @return the item or <code>null</code> if there was not match.
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| 140 | */
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[4065] | 141 | @SuppressWarnings("unchecked")
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[10287] | 142 | public static <T> T find(Iterable<? extends Object> collection, Class<? extends T> clazz) {
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[10715] | 143 | CheckParameterUtil.ensureParameterNotNull(clazz, "clazz");
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| 144 | return (T) find(collection, clazz::isInstance);
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[3836] | 145 | }
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[4408] | 146 |
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[10287] | 147 | /**
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[6610] | 148 | * Returns the first element from {@code items} which is non-null, or null if all elements are null.
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[9246] | 149 | * @param <T> type of items
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[7019] | 150 | * @param items the items to look for
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| 151 | * @return first non-null item if there is one
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[6610] | 152 | */
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[7019] | 153 | @SafeVarargs
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[5159] | 154 | public static <T> T firstNonNull(T... items) {
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| 155 | for (T i : items) {
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| 156 | if (i != null) {
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| 157 | return i;
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| 158 | }
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| 159 | }
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| 160 | return null;
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| 161 | }
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| 162 |
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[4100] | 163 | /**
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| 164 | * Filter a collection by (sub)class.
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| 165 | * This is an efficient read-only implementation.
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[9246] | 166 | * @param <S> Super type of items
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| 167 | * @param <T> type of items
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[8928] | 168 | * @param collection the collection
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[10287] | 169 | * @param clazz the (sub)class
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[8928] | 170 | * @return a read-only filtered collection
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[4100] | 171 | */
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[10287] | 172 | public static <S, T extends S> SubclassFilteredCollection<S, T> filteredCollection(Collection<S> collection, final Class<T> clazz) {
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[10715] | 173 | CheckParameterUtil.ensureParameterNotNull(clazz, "clazz");
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| 174 | return new SubclassFilteredCollection<>(collection, clazz::isInstance);
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[4100] | 175 | }
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[3836] | 176 |
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[10287] | 177 | /**
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| 178 | * Find the index of the first item that matches the predicate.
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| 179 | * @param <T> The iterable type
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| 180 | * @param collection The iterable to iterate over.
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| 181 | * @param predicate The predicate to search for.
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| 182 | * @return The index of the first item or -1 if none was found.
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| 183 | */
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[3869] | 184 | public static <T> int indexOf(Iterable<? extends T> collection, Predicate<? super T> predicate) {
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| 185 | int i = 0;
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| 186 | for (T item : collection) {
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[10691] | 187 | if (predicate.test(item))
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[3869] | 188 | return i;
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| 189 | i++;
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| 190 | }
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| 191 | return -1;
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| 192 | }
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| 193 |
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[3674] | 194 | /**
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[7867] | 195 | * Ensures a logical condition is met. Otherwise throws an assertion error.
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| 196 | * @param condition the condition to be met
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| 197 | * @param message Formatted error message to raise if condition is not met
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| 198 | * @param data Message parameters, optional
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| 199 | * @throws AssertionError if the condition is not met
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| 200 | */
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[4069] | 201 | public static void ensure(boolean condition, String message, Object...data) {
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| 202 | if (!condition)
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| 203 | throw new AssertionError(
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[8510] | 204 | MessageFormat.format(message, data)
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[4069] | 205 | );
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| 206 | }
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| 207 |
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[3796] | 208 | /**
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[8926] | 209 | * Return the modulus in the range [0, n)
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| 210 | * @param a dividend
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| 211 | * @param n divisor
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| 212 | * @return modulo (remainder of the Euclidian division of a by n)
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[3711] | 213 | */
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| 214 | public static int mod(int a, int n) {
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| 215 | if (n <= 0)
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[7864] | 216 | throw new IllegalArgumentException("n must be <= 0 but is "+n);
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[3711] | 217 | int res = a % n;
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| 218 | if (res < 0) {
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| 219 | res += n;
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| 220 | }
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| 221 | return res;
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| 222 | }
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| 223 |
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[3848] | 224 | /**
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| 225 | * Joins a list of strings (or objects that can be converted to string via
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| 226 | * Object.toString()) into a single string with fields separated by sep.
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| 227 | * @param sep the separator
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| 228 | * @param values collection of objects, null is converted to the
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| 229 | * empty string
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| 230 | * @return null if values is null. The joined string otherwise.
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| 231 | */
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| 232 | public static String join(String sep, Collection<?> values) {
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[7864] | 233 | CheckParameterUtil.ensureParameterNotNull(sep, "sep");
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[3848] | 234 | if (values == null)
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| 235 | return null;
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| 236 | StringBuilder s = null;
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| 237 | for (Object a : values) {
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| 238 | if (a == null) {
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| 239 | a = "";
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| 240 | }
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[4197] | 241 | if (s != null) {
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[8376] | 242 | s.append(sep).append(a);
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[3848] | 243 | } else {
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| 244 | s = new StringBuilder(a.toString());
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| 245 | }
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| 246 | }
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[7867] | 247 | return s != null ? s.toString() : "";
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[3848] | 248 | }
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[3859] | 249 |
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[6524] | 250 | /**
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| 251 | * Converts the given iterable collection as an unordered HTML list.
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| 252 | * @param values The iterable collection
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| 253 | * @return An unordered HTML list
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| 254 | */
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| 255 | public static String joinAsHtmlUnorderedList(Iterable<?> values) {
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[10718] | 256 | return StreamUtils.toStream(values).map(Object::toString).collect(StreamUtils.toHtmlList());
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[5132] | 257 | }
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| 258 |
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[3859] | 259 | /**
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| 260 | * convert Color to String
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| 261 | * (Color.toString() omits alpha value)
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[8928] | 262 | * @param c the color
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| 263 | * @return the String representation, including alpha
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[3859] | 264 | */
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| 265 | public static String toString(Color c) {
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| 266 | if (c == null)
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| 267 | return "null";
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| 268 | if (c.getAlpha() == 255)
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| 269 | return String.format("#%06x", c.getRGB() & 0x00ffffff);
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| 270 | else
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| 271 | return String.format("#%06x(alpha=%d)", c.getRGB() & 0x00ffffff, c.getAlpha());
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| 272 | }
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[3865] | 273 |
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| 274 | /**
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[6830] | 275 | * convert float range 0 <= x <= 1 to integer range 0..255
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[3865] | 276 | * when dealing with colors and color alpha value
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[9231] | 277 | * @param val float value between 0 and 1
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[3879] | 278 | * @return null if val is null, the corresponding int if val is in the
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| 279 | * range 0...1. If val is outside that range, return 255
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[3865] | 280 | */
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[10748] | 281 | public static Integer colorFloat2int(Float val) {
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[3865] | 282 | if (val == null)
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| 283 | return null;
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| 284 | if (val < 0 || val > 1)
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| 285 | return 255;
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| 286 | return (int) (255f * val + 0.5f);
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| 287 | }
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| 288 |
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| 289 | /**
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[6830] | 290 | * convert integer range 0..255 to float range 0 <= x <= 1
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[6749] | 291 | * when dealing with colors and color alpha value
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[8928] | 292 | * @param val integer value
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| 293 | * @return corresponding float value in range 0 <= x <= 1
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[3865] | 294 | */
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[10748] | 295 | public static Float colorInt2float(Integer val) {
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[3865] | 296 | if (val == null)
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| 297 | return null;
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| 298 | if (val < 0 || val > 255)
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| 299 | return 1f;
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| 300 | return ((float) val) / 255f;
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| 301 | }
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| 302 |
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[9231] | 303 | /**
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[11692] | 304 | * Multiply the alpha value of the given color with the factor. The alpha value is clamped to 0..255
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| 305 | * @param color The color
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| 306 | * @param alphaFactor The factor to multiply alpha with.
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| 307 | * @return The new color.
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| 308 | * @since 11692
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| 309 | */
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| 310 | public static Color alphaMultiply(Color color, float alphaFactor) {
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| 311 | int alpha = Utils.colorFloat2int(Utils.colorInt2float(color.getAlpha()) * alphaFactor);
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| 312 | alpha = clamp(alpha, 0, 255);
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| 313 | return new Color(color.getRed(), color.getGreen(), color.getBlue(), alpha);
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| 314 | }
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| 315 |
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| 316 | /**
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[9231] | 317 | * Returns the complementary color of {@code clr}.
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| 318 | * @param clr the color to complement
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| 319 | * @return the complementary color of {@code clr}
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| 320 | */
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[4069] | 321 | public static Color complement(Color clr) {
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| 322 | return new Color(255 - clr.getRed(), 255 - clr.getGreen(), 255 - clr.getBlue(), clr.getAlpha());
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| 323 | }
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[4065] | 324 |
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[5874] | 325 | /**
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[6221] | 326 | * Copies the given array. Unlike {@link Arrays#copyOf}, this method is null-safe.
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[9246] | 327 | * @param <T> type of items
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[6221] | 328 | * @param array The array to copy
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| 329 | * @return A copy of the original array, or {@code null} if {@code array} is null
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| 330 | * @since 6221
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| 331 | */
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| 332 | public static <T> T[] copyArray(T[] array) {
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| 333 | if (array != null) {
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| 334 | return Arrays.copyOf(array, array.length);
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| 335 | }
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[10315] | 336 | return array;
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[6221] | 337 | }
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[6792] | 338 |
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[6221] | 339 | /**
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[6222] | 340 | * Copies the given array. Unlike {@link Arrays#copyOf}, this method is null-safe.
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| 341 | * @param array The array to copy
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| 342 | * @return A copy of the original array, or {@code null} if {@code array} is null
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| 343 | * @since 6222
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| 344 | */
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[12798] | 345 | public static char[] copyArray(char... array) {
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[6222] | 346 | if (array != null) {
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| 347 | return Arrays.copyOf(array, array.length);
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| 348 | }
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[10315] | 349 | return array;
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[6222] | 350 | }
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[6792] | 351 |
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[6222] | 352 | /**
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[7436] | 353 | * Copies the given array. Unlike {@link Arrays#copyOf}, this method is null-safe.
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| 354 | * @param array The array to copy
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| 355 | * @return A copy of the original array, or {@code null} if {@code array} is null
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| 356 | * @since 7436
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| 357 | */
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[11747] | 358 | public static int[] copyArray(int... array) {
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[7436] | 359 | if (array != null) {
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| 360 | return Arrays.copyOf(array, array.length);
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| 361 | }
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[10315] | 362 | return array;
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[7436] | 363 | }
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| 364 |
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| 365 | /**
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[11879] | 366 | * Copies the given array. Unlike {@link Arrays#copyOf}, this method is null-safe.
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| 367 | * @param array The array to copy
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| 368 | * @return A copy of the original array, or {@code null} if {@code array} is null
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| 369 | * @since 11879
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| 370 | */
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| 371 | public static byte[] copyArray(byte... array) {
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| 372 | if (array != null) {
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| 373 | return Arrays.copyOf(array, array.length);
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| 374 | }
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| 375 | return array;
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| 376 | }
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| 377 |
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| 378 | /**
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[7835] | 379 | * Simple file copy function that will overwrite the target file.
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[5874] | 380 | * @param in The source file
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| 381 | * @param out The destination file
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[7003] | 382 | * @return the path to the target file
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[8291] | 383 | * @throws IOException if any I/O error occurs
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| 384 | * @throws IllegalArgumentException if {@code in} or {@code out} is {@code null}
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[7003] | 385 | * @since 7003
|
---|
[5874] | 386 | */
|
---|
[7835] | 387 | public static Path copyFile(File in, File out) throws IOException {
|
---|
[7003] | 388 | CheckParameterUtil.ensureParameterNotNull(in, "in");
|
---|
| 389 | CheckParameterUtil.ensureParameterNotNull(out, "out");
|
---|
| 390 | return Files.copy(in.toPath(), out.toPath(), StandardCopyOption.REPLACE_EXISTING);
|
---|
[5874] | 391 | }
|
---|
[6070] | 392 |
|
---|
[7835] | 393 | /**
|
---|
| 394 | * Recursive directory copy function
|
---|
| 395 | * @param in The source directory
|
---|
| 396 | * @param out The destination directory
|
---|
[8291] | 397 | * @throws IOException if any I/O error ooccurs
|
---|
| 398 | * @throws IllegalArgumentException if {@code in} or {@code out} is {@code null}
|
---|
[7835] | 399 | * @since 7835
|
---|
| 400 | */
|
---|
| 401 | public static void copyDirectory(File in, File out) throws IOException {
|
---|
| 402 | CheckParameterUtil.ensureParameterNotNull(in, "in");
|
---|
| 403 | CheckParameterUtil.ensureParameterNotNull(out, "out");
|
---|
| 404 | if (!out.exists() && !out.mkdirs()) {
|
---|
[12620] | 405 | Logging.warn("Unable to create directory "+out.getPath());
|
---|
[7835] | 406 | }
|
---|
[8308] | 407 | File[] files = in.listFiles();
|
---|
| 408 | if (files != null) {
|
---|
| 409 | for (File f : files) {
|
---|
| 410 | File target = new File(out, f.getName());
|
---|
| 411 | if (f.isDirectory()) {
|
---|
| 412 | copyDirectory(f, target);
|
---|
| 413 | } else {
|
---|
| 414 | copyFile(f, target);
|
---|
| 415 | }
|
---|
[7835] | 416 | }
|
---|
| 417 | }
|
---|
| 418 | }
|
---|
| 419 |
|
---|
[7867] | 420 | /**
|
---|
[7835] | 421 | * Deletes a directory recursively.
|
---|
| 422 | * @param path The directory to delete
|
---|
| 423 | * @return <code>true</code> if and only if the file or directory is
|
---|
| 424 | * successfully deleted; <code>false</code> otherwise
|
---|
| 425 | */
|
---|
[4065] | 426 | public static boolean deleteDirectory(File path) {
|
---|
[8443] | 427 | if (path.exists()) {
|
---|
[4065] | 428 | File[] files = path.listFiles();
|
---|
[8308] | 429 | if (files != null) {
|
---|
| 430 | for (File file : files) {
|
---|
| 431 | if (file.isDirectory()) {
|
---|
| 432 | deleteDirectory(file);
|
---|
[9296] | 433 | } else {
|
---|
| 434 | deleteFile(file);
|
---|
[8308] | 435 | }
|
---|
[4065] | 436 | }
|
---|
| 437 | }
|
---|
| 438 | }
|
---|
[7835] | 439 | return path.delete();
|
---|
[4065] | 440 | }
|
---|
[4087] | 441 |
|
---|
| 442 | /**
|
---|
[10570] | 443 | * Deletes a file and log a default warning if the file exists but the deletion fails.
|
---|
| 444 | * @param file file to delete
|
---|
| 445 | * @return {@code true} if and only if the file does not exist or is successfully deleted; {@code false} otherwise
|
---|
| 446 | * @since 10569
|
---|
| 447 | */
|
---|
| 448 | public static boolean deleteFileIfExists(File file) {
|
---|
| 449 | if (file.exists()) {
|
---|
| 450 | return deleteFile(file);
|
---|
| 451 | } else {
|
---|
| 452 | return true;
|
---|
| 453 | }
|
---|
| 454 | }
|
---|
| 455 |
|
---|
| 456 | /**
|
---|
[9296] | 457 | * Deletes a file and log a default warning if the deletion fails.
|
---|
| 458 | * @param file file to delete
|
---|
| 459 | * @return {@code true} if and only if the file is successfully deleted; {@code false} otherwise
|
---|
[9297] | 460 | * @since 9296
|
---|
[9296] | 461 | */
|
---|
| 462 | public static boolean deleteFile(File file) {
|
---|
| 463 | return deleteFile(file, marktr("Unable to delete file {0}"));
|
---|
| 464 | }
|
---|
| 465 |
|
---|
| 466 | /**
|
---|
| 467 | * Deletes a file and log a configurable warning if the deletion fails.
|
---|
| 468 | * @param file file to delete
|
---|
| 469 | * @param warnMsg warning message. It will be translated with {@code tr()}
|
---|
| 470 | * and must contain a single parameter <code>{0}</code> for the file path
|
---|
| 471 | * @return {@code true} if and only if the file is successfully deleted; {@code false} otherwise
|
---|
[9297] | 472 | * @since 9296
|
---|
[9296] | 473 | */
|
---|
| 474 | public static boolean deleteFile(File file, String warnMsg) {
|
---|
| 475 | boolean result = file.delete();
|
---|
| 476 | if (!result) {
|
---|
[12620] | 477 | Logging.warn(tr(warnMsg, file.getPath()));
|
---|
[9296] | 478 | }
|
---|
| 479 | return result;
|
---|
| 480 | }
|
---|
| 481 |
|
---|
| 482 | /**
|
---|
[9645] | 483 | * Creates a directory and log a default warning if the creation fails.
|
---|
| 484 | * @param dir directory to create
|
---|
| 485 | * @return {@code true} if and only if the directory is successfully created; {@code false} otherwise
|
---|
| 486 | * @since 9645
|
---|
| 487 | */
|
---|
| 488 | public static boolean mkDirs(File dir) {
|
---|
| 489 | return mkDirs(dir, marktr("Unable to create directory {0}"));
|
---|
| 490 | }
|
---|
| 491 |
|
---|
| 492 | /**
|
---|
| 493 | * Creates a directory and log a configurable warning if the creation fails.
|
---|
| 494 | * @param dir directory to create
|
---|
| 495 | * @param warnMsg warning message. It will be translated with {@code tr()}
|
---|
| 496 | * and must contain a single parameter <code>{0}</code> for the directory path
|
---|
| 497 | * @return {@code true} if and only if the directory is successfully created; {@code false} otherwise
|
---|
| 498 | * @since 9645
|
---|
| 499 | */
|
---|
| 500 | public static boolean mkDirs(File dir, String warnMsg) {
|
---|
| 501 | boolean result = dir.mkdirs();
|
---|
| 502 | if (!result) {
|
---|
[12620] | 503 | Logging.warn(tr(warnMsg, dir.getPath()));
|
---|
[9645] | 504 | }
|
---|
| 505 | return result;
|
---|
| 506 | }
|
---|
| 507 |
|
---|
| 508 | /**
|
---|
[6823] | 509 | * <p>Utility method for closing a {@link java.io.Closeable} object.</p>
|
---|
[4668] | 510 | *
|
---|
[5874] | 511 | * @param c the closeable object. May be null.
|
---|
[4087] | 512 | */
|
---|
[5874] | 513 | public static void close(Closeable c) {
|
---|
| 514 | if (c == null) return;
|
---|
[4087] | 515 | try {
|
---|
[5874] | 516 | c.close();
|
---|
[6268] | 517 | } catch (IOException e) {
|
---|
[12620] | 518 | Logging.warn(e);
|
---|
[4087] | 519 | }
|
---|
| 520 | }
|
---|
[6070] | 521 |
|
---|
[4087] | 522 | /**
|
---|
[6823] | 523 | * <p>Utility method for closing a {@link java.util.zip.ZipFile}.</p>
|
---|
[4668] | 524 | *
|
---|
[5874] | 525 | * @param zip the zip file. May be null.
|
---|
[4087] | 526 | */
|
---|
[5874] | 527 | public static void close(ZipFile zip) {
|
---|
[10721] | 528 | close((Closeable) zip);
|
---|
[4087] | 529 | }
|
---|
[6792] | 530 |
|
---|
[6615] | 531 | /**
|
---|
| 532 | * Converts the given file to its URL.
|
---|
| 533 | * @param f The file to get URL from
|
---|
| 534 | * @return The URL of the given file, or {@code null} if not possible.
|
---|
| 535 | * @since 6615
|
---|
| 536 | */
|
---|
| 537 | public static URL fileToURL(File f) {
|
---|
| 538 | if (f != null) {
|
---|
| 539 | try {
|
---|
| 540 | return f.toURI().toURL();
|
---|
| 541 | } catch (MalformedURLException ex) {
|
---|
[12620] | 542 | Logging.error("Unable to convert filename " + f.getAbsolutePath() + " to URL");
|
---|
[6615] | 543 | }
|
---|
| 544 | }
|
---|
| 545 | return null;
|
---|
| 546 | }
|
---|
[4087] | 547 |
|
---|
[6889] | 548 | private static final double EPSILON = 1e-11;
|
---|
[4272] | 549 |
|
---|
[6268] | 550 | /**
|
---|
| 551 | * Determines if the two given double values are equal (their delta being smaller than a fixed epsilon)
|
---|
| 552 | * @param a The first double value to compare
|
---|
| 553 | * @param b The second double value to compare
|
---|
| 554 | * @return {@code true} if {@code abs(a - b) <= 1e-11}, {@code false} otherwise
|
---|
| 555 | */
|
---|
[4272] | 556 | public static boolean equalsEpsilon(double a, double b) {
|
---|
[6268] | 557 | return Math.abs(a - b) <= EPSILON;
|
---|
[4272] | 558 | }
|
---|
[4380] | 559 |
|
---|
| 560 | /**
|
---|
[4403] | 561 | * Calculate MD5 hash of a string and output in hexadecimal format.
|
---|
[5589] | 562 | * @param data arbitrary String
|
---|
| 563 | * @return MD5 hash of data, string of length 32 with characters in range [0-9a-f]
|
---|
[4403] | 564 | */
|
---|
| 565 | public static String md5Hex(String data) {
|
---|
| 566 | MessageDigest md = null;
|
---|
| 567 | try {
|
---|
| 568 | md = MessageDigest.getInstance("MD5");
|
---|
| 569 | } catch (NoSuchAlgorithmException e) {
|
---|
[11374] | 570 | throw new JosmRuntimeException(e);
|
---|
[4403] | 571 | }
|
---|
[8429] | 572 | byte[] byteData = data.getBytes(StandardCharsets.UTF_8);
|
---|
[4403] | 573 | byte[] byteDigest = md.digest(byteData);
|
---|
| 574 | return toHexString(byteDigest);
|
---|
| 575 | }
|
---|
| 576 |
|
---|
[8510] | 577 | private static final char[] HEX_ARRAY = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
|
---|
[6175] | 578 |
|
---|
[4403] | 579 | /**
|
---|
[5589] | 580 | * Converts a byte array to a string of hexadecimal characters.
|
---|
| 581 | * Preserves leading zeros, so the size of the output string is always twice
|
---|
| 582 | * the number of input bytes.
|
---|
| 583 | * @param bytes the byte array
|
---|
| 584 | * @return hexadecimal representation
|
---|
[4403] | 585 | */
|
---|
| 586 | public static String toHexString(byte[] bytes) {
|
---|
[6175] | 587 |
|
---|
| 588 | if (bytes == null) {
|
---|
| 589 | return "";
|
---|
[4403] | 590 | }
|
---|
[6175] | 591 |
|
---|
| 592 | final int len = bytes.length;
|
---|
| 593 | if (len == 0) {
|
---|
| 594 | return "";
|
---|
| 595 | }
|
---|
| 596 |
|
---|
| 597 | char[] hexChars = new char[len * 2];
|
---|
| 598 | for (int i = 0, j = 0; i < len; i++) {
|
---|
| 599 | final int v = bytes[i];
|
---|
| 600 | hexChars[j++] = HEX_ARRAY[(v & 0xf0) >> 4];
|
---|
| 601 | hexChars[j++] = HEX_ARRAY[v & 0xf];
|
---|
| 602 | }
|
---|
[4403] | 603 | return new String(hexChars);
|
---|
| 604 | }
|
---|
[4668] | 605 |
|
---|
| 606 | /**
|
---|
| 607 | * Topological sort.
|
---|
[9246] | 608 | * @param <T> type of items
|
---|
[4668] | 609 | *
|
---|
[6830] | 610 | * @param dependencies contains mappings (key -> value). In the final list of sorted objects, the key will come
|
---|
[4668] | 611 | * after the value. (In other words, the key depends on the value(s).)
|
---|
| 612 | * There must not be cyclic dependencies.
|
---|
| 613 | * @return the list of sorted objects
|
---|
| 614 | */
|
---|
[8510] | 615 | public static <T> List<T> topologicalSort(final MultiMap<T, T> dependencies) {
|
---|
| 616 | MultiMap<T, T> deps = new MultiMap<>();
|
---|
[4668] | 617 | for (T key : dependencies.keySet()) {
|
---|
| 618 | deps.putVoid(key);
|
---|
| 619 | for (T val : dependencies.get(key)) {
|
---|
| 620 | deps.putVoid(val);
|
---|
| 621 | deps.put(key, val);
|
---|
| 622 | }
|
---|
| 623 | }
|
---|
| 624 |
|
---|
| 625 | int size = deps.size();
|
---|
[7005] | 626 | List<T> sorted = new ArrayList<>();
|
---|
[8510] | 627 | for (int i = 0; i < size; ++i) {
|
---|
[4668] | 628 | T parentless = null;
|
---|
| 629 | for (T key : deps.keySet()) {
|
---|
[6093] | 630 | if (deps.get(key).isEmpty()) {
|
---|
[4668] | 631 | parentless = key;
|
---|
| 632 | break;
|
---|
| 633 | }
|
---|
| 634 | }
|
---|
[11374] | 635 | if (parentless == null) throw new JosmRuntimeException("parentless");
|
---|
[4668] | 636 | sorted.add(parentless);
|
---|
| 637 | deps.remove(parentless);
|
---|
| 638 | for (T key : deps.keySet()) {
|
---|
| 639 | deps.remove(key, parentless);
|
---|
| 640 | }
|
---|
| 641 | }
|
---|
[11374] | 642 | if (sorted.size() != size) throw new JosmRuntimeException("Wrong size");
|
---|
[4668] | 643 | return sorted;
|
---|
| 644 | }
|
---|
[4816] | 645 |
|
---|
| 646 | /**
|
---|
[8756] | 647 | * Replaces some HTML reserved characters (<, > and &) by their equivalent entity (&lt;, &gt; and &amp;);
|
---|
| 648 | * @param s The unescaped string
|
---|
| 649 | * @return The escaped string
|
---|
| 650 | */
|
---|
| 651 | public static String escapeReservedCharactersHTML(String s) {
|
---|
| 652 | return s == null ? "" : s.replace("&", "&").replace("<", "<").replace(">", ">");
|
---|
| 653 | }
|
---|
| 654 |
|
---|
| 655 | /**
|
---|
[4816] | 656 | * Transforms the collection {@code c} into an unmodifiable collection and
|
---|
[10692] | 657 | * applies the {@link Function} {@code f} on each element upon access.
|
---|
[4816] | 658 | * @param <A> class of input collection
|
---|
| 659 | * @param <B> class of transformed collection
|
---|
| 660 | * @param c a collection
|
---|
| 661 | * @param f a function that transforms objects of {@code A} to objects of {@code B}
|
---|
| 662 | * @return the transformed unmodifiable collection
|
---|
| 663 | */
|
---|
[10692] | 664 | public static <A, B> Collection<B> transform(final Collection<? extends A> c, final Function<A, B> f) {
|
---|
[5578] | 665 | return new AbstractCollection<B>() {
|
---|
[4816] | 666 |
|
---|
| 667 | @Override
|
---|
| 668 | public int size() {
|
---|
| 669 | return c.size();
|
---|
| 670 | }
|
---|
| 671 |
|
---|
| 672 | @Override
|
---|
| 673 | public Iterator<B> iterator() {
|
---|
| 674 | return new Iterator<B>() {
|
---|
| 675 |
|
---|
[12604] | 676 | private final Iterator<? extends A> it = c.iterator();
|
---|
[4816] | 677 |
|
---|
| 678 | @Override
|
---|
| 679 | public boolean hasNext() {
|
---|
| 680 | return it.hasNext();
|
---|
| 681 | }
|
---|
| 682 |
|
---|
| 683 | @Override
|
---|
| 684 | public B next() {
|
---|
| 685 | return f.apply(it.next());
|
---|
| 686 | }
|
---|
| 687 |
|
---|
| 688 | @Override
|
---|
| 689 | public void remove() {
|
---|
| 690 | throw new UnsupportedOperationException();
|
---|
| 691 | }
|
---|
| 692 | };
|
---|
| 693 | }
|
---|
[5578] | 694 | };
|
---|
| 695 | }
|
---|
[4816] | 696 |
|
---|
[5578] | 697 | /**
|
---|
| 698 | * Transforms the list {@code l} into an unmodifiable list and
|
---|
[10692] | 699 | * applies the {@link Function} {@code f} on each element upon access.
|
---|
[5578] | 700 | * @param <A> class of input collection
|
---|
| 701 | * @param <B> class of transformed collection
|
---|
| 702 | * @param l a collection
|
---|
| 703 | * @param f a function that transforms objects of {@code A} to objects of {@code B}
|
---|
| 704 | * @return the transformed unmodifiable list
|
---|
| 705 | */
|
---|
[10692] | 706 | public static <A, B> List<B> transform(final List<? extends A> l, final Function<A, B> f) {
|
---|
[5578] | 707 | return new AbstractList<B>() {
|
---|
[4816] | 708 |
|
---|
| 709 | @Override
|
---|
[5578] | 710 | public int size() {
|
---|
| 711 | return l.size();
|
---|
[4816] | 712 | }
|
---|
| 713 |
|
---|
| 714 | @Override
|
---|
[5578] | 715 | public B get(int index) {
|
---|
| 716 | return f.apply(l.get(index));
|
---|
[4816] | 717 | }
|
---|
| 718 | };
|
---|
| 719 | }
|
---|
[5577] | 720 |
|
---|
| 721 | /**
|
---|
[11435] | 722 | * Determines if the given String would be empty if stripped.
|
---|
| 723 | * This is an efficient alternative to {@code strip(s).isEmpty()} that avoids to create useless String object.
|
---|
| 724 | * @param str The string to test
|
---|
| 725 | * @return {@code true} if the stripped version of {@code s} would be empty.
|
---|
| 726 | * @since 11435
|
---|
| 727 | */
|
---|
| 728 | public static boolean isStripEmpty(String str) {
|
---|
| 729 | if (str != null) {
|
---|
| 730 | for (int i = 0; i < str.length(); i++) {
|
---|
| 731 | if (!isStrippedChar(str.charAt(i), DEFAULT_STRIP)) {
|
---|
| 732 | return false;
|
---|
| 733 | }
|
---|
| 734 | }
|
---|
| 735 | }
|
---|
| 736 | return true;
|
---|
| 737 | }
|
---|
| 738 |
|
---|
| 739 | /**
|
---|
[9419] | 740 | * An alternative to {@link String#trim()} to effectively remove all leading
|
---|
| 741 | * and trailing white characters, including Unicode ones.
|
---|
[5772] | 742 | * @param str The string to strip
|
---|
[6070] | 743 | * @return <code>str</code>, without leading and trailing characters, according to
|
---|
[5772] | 744 | * {@link Character#isWhitespace(char)} and {@link Character#isSpaceChar(char)}.
|
---|
[10873] | 745 | * @see <a href="http://closingbraces.net/2008/11/11/javastringtrim/">Java String.trim has a strange idea of whitespace</a>
|
---|
[8419] | 746 | * @see <a href="https://bugs.openjdk.java.net/browse/JDK-4080617">JDK bug 4080617</a>
|
---|
[8924] | 747 | * @see <a href="https://bugs.openjdk.java.net/browse/JDK-7190385">JDK bug 7190385</a>
|
---|
[5772] | 748 | * @since 5772
|
---|
| 749 | */
|
---|
[8435] | 750 | public static String strip(final String str) {
|
---|
[8567] | 751 | if (str == null || str.isEmpty()) {
|
---|
| 752 | return str;
|
---|
| 753 | }
|
---|
| 754 | return strip(str, DEFAULT_STRIP);
|
---|
[8435] | 755 | }
|
---|
| 756 |
|
---|
| 757 | /**
|
---|
[9419] | 758 | * An alternative to {@link String#trim()} to effectively remove all leading
|
---|
| 759 | * and trailing white characters, including Unicode ones.
|
---|
[8435] | 760 | * @param str The string to strip
|
---|
| 761 | * @param skipChars additional characters to skip
|
---|
| 762 | * @return <code>str</code>, without leading and trailing characters, according to
|
---|
| 763 | * {@link Character#isWhitespace(char)}, {@link Character#isSpaceChar(char)} and skipChars.
|
---|
| 764 | * @since 8435
|
---|
| 765 | */
|
---|
| 766 | public static String strip(final String str, final String skipChars) {
|
---|
[5772] | 767 | if (str == null || str.isEmpty()) {
|
---|
| 768 | return str;
|
---|
| 769 | }
|
---|
[8567] | 770 | return strip(str, stripChars(skipChars));
|
---|
| 771 | }
|
---|
| 772 |
|
---|
[12798] | 773 | private static String strip(final String str, final char... skipChars) {
|
---|
[8567] | 774 |
|
---|
[8435] | 775 | int start = 0;
|
---|
| 776 | int end = str.length();
|
---|
| 777 | boolean leadingSkipChar = true;
|
---|
| 778 | while (leadingSkipChar && start < end) {
|
---|
[11435] | 779 | leadingSkipChar = isStrippedChar(str.charAt(start), skipChars);
|
---|
[8435] | 780 | if (leadingSkipChar) {
|
---|
[5772] | 781 | start++;
|
---|
| 782 | }
|
---|
| 783 | }
|
---|
[8435] | 784 | boolean trailingSkipChar = true;
|
---|
[8567] | 785 | while (trailingSkipChar && end > start + 1) {
|
---|
[11435] | 786 | trailingSkipChar = isStrippedChar(str.charAt(end - 1), skipChars);
|
---|
[8435] | 787 | if (trailingSkipChar) {
|
---|
[5772] | 788 | end--;
|
---|
| 789 | }
|
---|
| 790 | }
|
---|
[8567] | 791 |
|
---|
[5772] | 792 | return str.substring(start, end);
|
---|
| 793 | }
|
---|
[6103] | 794 |
|
---|
[12798] | 795 | private static boolean isStrippedChar(char c, final char... skipChars) {
|
---|
[11435] | 796 | return Character.isWhitespace(c) || Character.isSpaceChar(c) || stripChar(skipChars, c);
|
---|
| 797 | }
|
---|
| 798 |
|
---|
[8567] | 799 | private static char[] stripChars(final String skipChars) {
|
---|
| 800 | if (skipChars == null || skipChars.isEmpty()) {
|
---|
| 801 | return DEFAULT_STRIP;
|
---|
| 802 | }
|
---|
| 803 |
|
---|
| 804 | char[] chars = new char[DEFAULT_STRIP.length + skipChars.length()];
|
---|
| 805 | System.arraycopy(DEFAULT_STRIP, 0, chars, 0, DEFAULT_STRIP.length);
|
---|
| 806 | skipChars.getChars(0, skipChars.length(), chars, DEFAULT_STRIP.length);
|
---|
| 807 |
|
---|
| 808 | return chars;
|
---|
| 809 | }
|
---|
| 810 |
|
---|
| 811 | private static boolean stripChar(final char[] strip, char c) {
|
---|
| 812 | for (char s : strip) {
|
---|
| 813 | if (c == s) {
|
---|
| 814 | return true;
|
---|
| 815 | }
|
---|
| 816 | }
|
---|
| 817 | return false;
|
---|
| 818 | }
|
---|
| 819 |
|
---|
[6103] | 820 | /**
|
---|
| 821 | * Runs an external command and returns the standard output.
|
---|
[6792] | 822 | *
|
---|
[6103] | 823 | * The program is expected to execute fast.
|
---|
[6792] | 824 | *
|
---|
[6103] | 825 | * @param command the command with arguments
|
---|
| 826 | * @return the output
|
---|
| 827 | * @throws IOException when there was an error, e.g. command does not exist
|
---|
[12830] | 828 | * @throws ExecutionException when the return code is != 0. The output is can be retrieved in the exception message
|
---|
| 829 | * @throws InterruptedException if the current thread is {@linkplain Thread#interrupt() interrupted} by another thread while waiting
|
---|
[6103] | 830 | */
|
---|
[12830] | 831 | public static String execOutput(List<String> command) throws IOException, ExecutionException, InterruptedException {
|
---|
[12620] | 832 | if (Logging.isDebugEnabled()) {
|
---|
| 833 | Logging.debug(join(" ", command));
|
---|
[6962] | 834 | }
|
---|
[6103] | 835 | Process p = new ProcessBuilder(command).start();
|
---|
[7082] | 836 | try (BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream(), StandardCharsets.UTF_8))) {
|
---|
[7037] | 837 | StringBuilder all = null;
|
---|
| 838 | String line;
|
---|
| 839 | while ((line = input.readLine()) != null) {
|
---|
| 840 | if (all == null) {
|
---|
| 841 | all = new StringBuilder(line);
|
---|
| 842 | } else {
|
---|
[8390] | 843 | all.append('\n');
|
---|
[7037] | 844 | all.append(line);
|
---|
| 845 | }
|
---|
[6103] | 846 | }
|
---|
[12830] | 847 | String msg = all != null ? all.toString() : null;
|
---|
| 848 | if (p.waitFor() != 0) {
|
---|
| 849 | throw new ExecutionException(msg, null);
|
---|
| 850 | }
|
---|
| 851 | return msg;
|
---|
[6103] | 852 | }
|
---|
| 853 | }
|
---|
[6245] | 854 |
|
---|
| 855 | /**
|
---|
| 856 | * Returns the JOSM temp directory.
|
---|
| 857 | * @return The JOSM temp directory ({@code <java.io.tmpdir>/JOSM}), or {@code null} if {@code java.io.tmpdir} is not defined
|
---|
| 858 | * @since 6245
|
---|
| 859 | */
|
---|
| 860 | public static File getJosmTempDir() {
|
---|
| 861 | String tmpDir = System.getProperty("java.io.tmpdir");
|
---|
| 862 | if (tmpDir == null) {
|
---|
| 863 | return null;
|
---|
| 864 | }
|
---|
| 865 | File josmTmpDir = new File(tmpDir, "JOSM");
|
---|
[6883] | 866 | if (!josmTmpDir.exists() && !josmTmpDir.mkdirs()) {
|
---|
[12620] | 867 | Logging.warn("Unable to create temp directory " + josmTmpDir);
|
---|
[6245] | 868 | }
|
---|
| 869 | return josmTmpDir;
|
---|
| 870 | }
|
---|
[6354] | 871 |
|
---|
| 872 | /**
|
---|
| 873 | * Returns a simple human readable (hours, minutes, seconds) string for a given duration in milliseconds.
|
---|
| 874 | * @param elapsedTime The duration in milliseconds
|
---|
[6661] | 875 | * @return A human readable string for the given duration
|
---|
[6830] | 876 | * @throws IllegalArgumentException if elapsedTime is < 0
|
---|
[6354] | 877 | * @since 6354
|
---|
| 878 | */
|
---|
[7867] | 879 | public static String getDurationString(long elapsedTime) {
|
---|
[6354] | 880 | if (elapsedTime < 0) {
|
---|
[7321] | 881 | throw new IllegalArgumentException("elapsedTime must be >= 0");
|
---|
[6354] | 882 | }
|
---|
| 883 | // Is it less than 1 second ?
|
---|
[6661] | 884 | if (elapsedTime < MILLIS_OF_SECOND) {
|
---|
[6354] | 885 | return String.format("%d %s", elapsedTime, tr("ms"));
|
---|
| 886 | }
|
---|
| 887 | // Is it less than 1 minute ?
|
---|
[6661] | 888 | if (elapsedTime < MILLIS_OF_MINUTE) {
|
---|
[8385] | 889 | return String.format("%.1f %s", elapsedTime / (double) MILLIS_OF_SECOND, tr("s"));
|
---|
[6354] | 890 | }
|
---|
| 891 | // Is it less than 1 hour ?
|
---|
[6661] | 892 | if (elapsedTime < MILLIS_OF_HOUR) {
|
---|
| 893 | final long min = elapsedTime / MILLIS_OF_MINUTE;
|
---|
| 894 | return String.format("%d %s %d %s", min, tr("min"), (elapsedTime - min * MILLIS_OF_MINUTE) / MILLIS_OF_SECOND, tr("s"));
|
---|
[6354] | 895 | }
|
---|
| 896 | // Is it less than 1 day ?
|
---|
[6661] | 897 | if (elapsedTime < MILLIS_OF_DAY) {
|
---|
| 898 | final long hour = elapsedTime / MILLIS_OF_HOUR;
|
---|
| 899 | return String.format("%d %s %d %s", hour, tr("h"), (elapsedTime - hour * MILLIS_OF_HOUR) / MILLIS_OF_MINUTE, tr("min"));
|
---|
[6354] | 900 | }
|
---|
[6661] | 901 | long days = elapsedTime / MILLIS_OF_DAY;
|
---|
| 902 | return String.format("%d %s %d %s", days, trn("day", "days", days), (elapsedTime - days * MILLIS_OF_DAY) / MILLIS_OF_HOUR, tr("h"));
|
---|
[6354] | 903 | }
|
---|
[6538] | 904 |
|
---|
| 905 | /**
|
---|
[9274] | 906 | * Returns a human readable representation (B, kB, MB, ...) for the given number of byes.
|
---|
| 907 | * @param bytes the number of bytes
|
---|
| 908 | * @param locale the locale used for formatting
|
---|
| 909 | * @return a human readable representation
|
---|
| 910 | * @since 9274
|
---|
| 911 | */
|
---|
| 912 | public static String getSizeString(long bytes, Locale locale) {
|
---|
| 913 | if (bytes < 0) {
|
---|
| 914 | throw new IllegalArgumentException("bytes must be >= 0");
|
---|
| 915 | }
|
---|
| 916 | int unitIndex = 0;
|
---|
| 917 | double value = bytes;
|
---|
[9954] | 918 | while (value >= 1024 && unitIndex < SIZE_UNITS.length) {
|
---|
[9274] | 919 | value /= 1024;
|
---|
| 920 | unitIndex++;
|
---|
| 921 | }
|
---|
| 922 | if (value > 100 || unitIndex == 0) {
|
---|
[9954] | 923 | return String.format(locale, "%.0f %s", value, SIZE_UNITS[unitIndex]);
|
---|
[9274] | 924 | } else if (value > 10) {
|
---|
[9954] | 925 | return String.format(locale, "%.1f %s", value, SIZE_UNITS[unitIndex]);
|
---|
[9274] | 926 | } else {
|
---|
[9954] | 927 | return String.format(locale, "%.2f %s", value, SIZE_UNITS[unitIndex]);
|
---|
[9274] | 928 | }
|
---|
| 929 | }
|
---|
| 930 |
|
---|
| 931 | /**
|
---|
[6652] | 932 | * Returns a human readable representation of a list of positions.
|
---|
[6830] | 933 | * <p>
|
---|
[6652] | 934 | * For instance, {@code [1,5,2,6,7} yields "1-2,5-7
|
---|
| 935 | * @param positionList a list of positions
|
---|
| 936 | * @return a human readable representation
|
---|
| 937 | */
|
---|
[8567] | 938 | public static String getPositionListString(List<Integer> positionList) {
|
---|
[6652] | 939 | Collections.sort(positionList);
|
---|
| 940 | final StringBuilder sb = new StringBuilder(32);
|
---|
| 941 | sb.append(positionList.get(0));
|
---|
| 942 | int cnt = 0;
|
---|
| 943 | int last = positionList.get(0);
|
---|
| 944 | for (int i = 1; i < positionList.size(); ++i) {
|
---|
| 945 | int cur = positionList.get(i);
|
---|
| 946 | if (cur == last + 1) {
|
---|
| 947 | ++cnt;
|
---|
| 948 | } else if (cnt == 0) {
|
---|
[8390] | 949 | sb.append(',').append(cur);
|
---|
[6652] | 950 | } else {
|
---|
[8390] | 951 | sb.append('-').append(last);
|
---|
| 952 | sb.append(',').append(cur);
|
---|
[6652] | 953 | cnt = 0;
|
---|
| 954 | }
|
---|
| 955 | last = cur;
|
---|
| 956 | }
|
---|
| 957 | if (cnt >= 1) {
|
---|
[8390] | 958 | sb.append('-').append(last);
|
---|
[6652] | 959 | }
|
---|
| 960 | return sb.toString();
|
---|
| 961 | }
|
---|
| 962 |
|
---|
| 963 | /**
|
---|
[6538] | 964 | * Returns a list of capture groups if {@link Matcher#matches()}, or {@code null}.
|
---|
| 965 | * The first element (index 0) is the complete match.
|
---|
| 966 | * Further elements correspond to the parts in parentheses of the regular expression.
|
---|
| 967 | * @param m the matcher
|
---|
| 968 | * @return a list of capture groups if {@link Matcher#matches()}, or {@code null}.
|
---|
| 969 | */
|
---|
| 970 | public static List<String> getMatches(final Matcher m) {
|
---|
| 971 | if (m.matches()) {
|
---|
[7005] | 972 | List<String> result = new ArrayList<>(m.groupCount() + 1);
|
---|
[6538] | 973 | for (int i = 0; i <= m.groupCount(); i++) {
|
---|
| 974 | result.add(m.group(i));
|
---|
| 975 | }
|
---|
| 976 | return result;
|
---|
| 977 | } else {
|
---|
| 978 | return null;
|
---|
| 979 | }
|
---|
| 980 | }
|
---|
[6578] | 981 |
|
---|
| 982 | /**
|
---|
| 983 | * Cast an object savely.
|
---|
| 984 | * @param <T> the target type
|
---|
| 985 | * @param o the object to cast
|
---|
| 986 | * @param klass the target class (same as T)
|
---|
| 987 | * @return null if <code>o</code> is null or the type <code>o</code> is not
|
---|
| 988 | * a subclass of <code>klass</code>. The casted value otherwise.
|
---|
| 989 | */
|
---|
[6623] | 990 | @SuppressWarnings("unchecked")
|
---|
[6578] | 991 | public static <T> T cast(Object o, Class<T> klass) {
|
---|
| 992 | if (klass.isInstance(o)) {
|
---|
[6623] | 993 | return (T) o;
|
---|
[6578] | 994 | }
|
---|
| 995 | return null;
|
---|
| 996 | }
|
---|
| 997 |
|
---|
[6642] | 998 | /**
|
---|
| 999 | * Returns the root cause of a throwable object.
|
---|
| 1000 | * @param t The object to get root cause for
|
---|
| 1001 | * @return the root cause of {@code t}
|
---|
| 1002 | * @since 6639
|
---|
| 1003 | */
|
---|
| 1004 | public static Throwable getRootCause(Throwable t) {
|
---|
| 1005 | Throwable result = t;
|
---|
| 1006 | if (result != null) {
|
---|
| 1007 | Throwable cause = result.getCause();
|
---|
[7867] | 1008 | while (cause != null && !cause.equals(result)) {
|
---|
[6642] | 1009 | result = cause;
|
---|
| 1010 | cause = result.getCause();
|
---|
| 1011 | }
|
---|
| 1012 | }
|
---|
| 1013 | return result;
|
---|
| 1014 | }
|
---|
[6792] | 1015 |
|
---|
[6717] | 1016 | /**
|
---|
| 1017 | * Adds the given item at the end of a new copy of given array.
|
---|
[9246] | 1018 | * @param <T> type of items
|
---|
[6717] | 1019 | * @param array The source array
|
---|
| 1020 | * @param item The item to add
|
---|
| 1021 | * @return An extended copy of {@code array} containing {@code item} as additional last element
|
---|
| 1022 | * @since 6717
|
---|
| 1023 | */
|
---|
| 1024 | public static <T> T[] addInArrayCopy(T[] array, T item) {
|
---|
| 1025 | T[] biggerCopy = Arrays.copyOf(array, array.length + 1);
|
---|
| 1026 | biggerCopy[array.length] = item;
|
---|
| 1027 | return biggerCopy;
|
---|
| 1028 | }
|
---|
[6742] | 1029 |
|
---|
| 1030 | /**
|
---|
| 1031 | * If the string {@code s} is longer than {@code maxLength}, the string is cut and "..." is appended.
|
---|
[7867] | 1032 | * @param s String to shorten
|
---|
| 1033 | * @param maxLength maximum number of characters to keep (not including the "...")
|
---|
| 1034 | * @return the shortened string
|
---|
[6742] | 1035 | */
|
---|
| 1036 | public static String shortenString(String s, int maxLength) {
|
---|
| 1037 | if (s != null && s.length() > maxLength) {
|
---|
| 1038 | return s.substring(0, maxLength - 3) + "...";
|
---|
| 1039 | } else {
|
---|
| 1040 | return s;
|
---|
| 1041 | }
|
---|
| 1042 | }
|
---|
[7019] | 1043 |
|
---|
[6972] | 1044 | /**
|
---|
[8756] | 1045 | * If the string {@code s} is longer than {@code maxLines} lines, the string is cut and a "..." line is appended.
|
---|
| 1046 | * @param s String to shorten
|
---|
| 1047 | * @param maxLines maximum number of lines to keep (including including the "..." line)
|
---|
| 1048 | * @return the shortened string
|
---|
| 1049 | */
|
---|
| 1050 | public static String restrictStringLines(String s, int maxLines) {
|
---|
| 1051 | if (s == null) {
|
---|
| 1052 | return null;
|
---|
| 1053 | } else {
|
---|
[9473] | 1054 | return join("\n", limit(Arrays.asList(s.split("\\n")), maxLines, "..."));
|
---|
| 1055 | }
|
---|
| 1056 | }
|
---|
| 1057 |
|
---|
| 1058 | /**
|
---|
| 1059 | * If the collection {@code elements} is larger than {@code maxElements} elements,
|
---|
| 1060 | * the collection is shortened and the {@code overflowIndicator} is appended.
|
---|
[9477] | 1061 | * @param <T> type of elements
|
---|
[9473] | 1062 | * @param elements collection to shorten
|
---|
| 1063 | * @param maxElements maximum number of elements to keep (including including the {@code overflowIndicator})
|
---|
| 1064 | * @param overflowIndicator the element used to indicate that the collection has been shortened
|
---|
| 1065 | * @return the shortened collection
|
---|
| 1066 | */
|
---|
| 1067 | public static <T> Collection<T> limit(Collection<T> elements, int maxElements, T overflowIndicator) {
|
---|
| 1068 | if (elements == null) {
|
---|
| 1069 | return null;
|
---|
| 1070 | } else {
|
---|
| 1071 | if (elements.size() > maxElements) {
|
---|
| 1072 | final Collection<T> r = new ArrayList<>(maxElements);
|
---|
| 1073 | final Iterator<T> it = elements.iterator();
|
---|
| 1074 | while (r.size() < maxElements - 1) {
|
---|
| 1075 | r.add(it.next());
|
---|
| 1076 | }
|
---|
| 1077 | r.add(overflowIndicator);
|
---|
| 1078 | return r;
|
---|
[8756] | 1079 | } else {
|
---|
[9473] | 1080 | return elements;
|
---|
[8756] | 1081 | }
|
---|
| 1082 | }
|
---|
| 1083 | }
|
---|
| 1084 |
|
---|
| 1085 | /**
|
---|
[7019] | 1086 | * Fixes URL with illegal characters in the query (and fragment) part by
|
---|
[6972] | 1087 | * percent encoding those characters.
|
---|
[7019] | 1088 | *
|
---|
[6972] | 1089 | * special characters like & and # are not encoded
|
---|
[7019] | 1090 | *
|
---|
[6972] | 1091 | * @param url the URL that should be fixed
|
---|
| 1092 | * @return the repaired URL
|
---|
| 1093 | */
|
---|
| 1094 | public static String fixURLQuery(String url) {
|
---|
[9732] | 1095 | if (url == null || url.indexOf('?') == -1)
|
---|
[6972] | 1096 | return url;
|
---|
[7019] | 1097 |
|
---|
[6972] | 1098 | String query = url.substring(url.indexOf('?') + 1);
|
---|
[7019] | 1099 |
|
---|
[6972] | 1100 | StringBuilder sb = new StringBuilder(url.substring(0, url.indexOf('?') + 1));
|
---|
[7019] | 1101 |
|
---|
[8510] | 1102 | for (int i = 0; i < query.length(); i++) {
|
---|
[8567] | 1103 | String c = query.substring(i, i + 1);
|
---|
[6972] | 1104 | if (URL_CHARS.contains(c)) {
|
---|
| 1105 | sb.append(c);
|
---|
| 1106 | } else {
|
---|
[8304] | 1107 | sb.append(encodeUrl(c));
|
---|
[6972] | 1108 | }
|
---|
| 1109 | }
|
---|
| 1110 | return sb.toString();
|
---|
| 1111 | }
|
---|
[7019] | 1112 |
|
---|
[7356] | 1113 | /**
|
---|
[8304] | 1114 | * Translates a string into <code>application/x-www-form-urlencoded</code>
|
---|
| 1115 | * format. This method uses UTF-8 encoding scheme to obtain the bytes for unsafe
|
---|
| 1116 | * characters.
|
---|
| 1117 | *
|
---|
| 1118 | * @param s <code>String</code> to be translated.
|
---|
| 1119 | * @return the translated <code>String</code>.
|
---|
| 1120 | * @see #decodeUrl(String)
|
---|
| 1121 | * @since 8304
|
---|
| 1122 | */
|
---|
| 1123 | public static String encodeUrl(String s) {
|
---|
| 1124 | final String enc = StandardCharsets.UTF_8.name();
|
---|
| 1125 | try {
|
---|
| 1126 | return URLEncoder.encode(s, enc);
|
---|
| 1127 | } catch (UnsupportedEncodingException e) {
|
---|
[9196] | 1128 | throw new IllegalStateException(e);
|
---|
[8304] | 1129 | }
|
---|
| 1130 | }
|
---|
| 1131 |
|
---|
| 1132 | /**
|
---|
| 1133 | * Decodes a <code>application/x-www-form-urlencoded</code> string.
|
---|
| 1134 | * UTF-8 encoding is used to determine
|
---|
| 1135 | * what characters are represented by any consecutive sequences of the
|
---|
| 1136 | * form "<code>%<i>xy</i></code>".
|
---|
| 1137 | *
|
---|
| 1138 | * @param s the <code>String</code> to decode
|
---|
| 1139 | * @return the newly decoded <code>String</code>
|
---|
| 1140 | * @see #encodeUrl(String)
|
---|
| 1141 | * @since 8304
|
---|
| 1142 | */
|
---|
| 1143 | public static String decodeUrl(String s) {
|
---|
| 1144 | final String enc = StandardCharsets.UTF_8.name();
|
---|
| 1145 | try {
|
---|
| 1146 | return URLDecoder.decode(s, enc);
|
---|
| 1147 | } catch (UnsupportedEncodingException e) {
|
---|
[9196] | 1148 | throw new IllegalStateException(e);
|
---|
[8304] | 1149 | }
|
---|
| 1150 | }
|
---|
| 1151 |
|
---|
| 1152 | /**
|
---|
[7356] | 1153 | * Determines if the given URL denotes a file on a local filesystem.
|
---|
| 1154 | * @param url The URL to test
|
---|
| 1155 | * @return {@code true} if the url points to a local file
|
---|
| 1156 | * @since 7356
|
---|
| 1157 | */
|
---|
| 1158 | public static boolean isLocalUrl(String url) {
|
---|
[11893] | 1159 | return url != null && !url.startsWith("http://") && !url.startsWith("https://") && !url.startsWith("resource://");
|
---|
[7356] | 1160 | }
|
---|
[7423] | 1161 |
|
---|
| 1162 | /**
|
---|
[10294] | 1163 | * Determines if the given URL is valid.
|
---|
| 1164 | * @param url The URL to test
|
---|
| 1165 | * @return {@code true} if the url is valid
|
---|
| 1166 | * @since 10294
|
---|
| 1167 | */
|
---|
| 1168 | public static boolean isValidUrl(String url) {
|
---|
[10761] | 1169 | if (url != null) {
|
---|
| 1170 | try {
|
---|
| 1171 | new URL(url);
|
---|
| 1172 | return true;
|
---|
| 1173 | } catch (MalformedURLException e) {
|
---|
[12620] | 1174 | Logging.trace(e);
|
---|
[10761] | 1175 | }
|
---|
[10294] | 1176 | }
|
---|
[10761] | 1177 | return false;
|
---|
[10294] | 1178 | }
|
---|
| 1179 |
|
---|
| 1180 | /**
|
---|
[8734] | 1181 | * Creates a new {@link ThreadFactory} which creates threads with names according to {@code nameFormat}.
|
---|
| 1182 | * @param nameFormat a {@link String#format(String, Object...)} compatible name format; its first argument is a unique thread index
|
---|
| 1183 | * @param threadPriority the priority of the created threads, see {@link Thread#setPriority(int)}
|
---|
| 1184 | * @return a new {@link ThreadFactory}
|
---|
| 1185 | */
|
---|
| 1186 | public static ThreadFactory newThreadFactory(final String nameFormat, final int threadPriority) {
|
---|
| 1187 | return new ThreadFactory() {
|
---|
| 1188 | final AtomicLong count = new AtomicLong(0);
|
---|
| 1189 | @Override
|
---|
| 1190 | public Thread newThread(final Runnable runnable) {
|
---|
| 1191 | final Thread thread = new Thread(runnable, String.format(Locale.ENGLISH, nameFormat, count.getAndIncrement()));
|
---|
| 1192 | thread.setPriority(threadPriority);
|
---|
| 1193 | return thread;
|
---|
| 1194 | }
|
---|
| 1195 | };
|
---|
| 1196 | }
|
---|
| 1197 |
|
---|
| 1198 | /**
|
---|
[9351] | 1199 | * Returns a {@link ForkJoinPool} with the parallelism given by the preference key.
|
---|
| 1200 | * @param pref The preference key to determine parallelism
|
---|
[8734] | 1201 | * @param nameFormat see {@link #newThreadFactory(String, int)}
|
---|
| 1202 | * @param threadPriority see {@link #newThreadFactory(String, int)}
|
---|
[9351] | 1203 | * @return a {@link ForkJoinPool}
|
---|
[7423] | 1204 | */
|
---|
[9351] | 1205 | public static ForkJoinPool newForkJoinPool(String pref, final String nameFormat, final int threadPriority) {
|
---|
[12846] | 1206 | int noThreads = Config.getPref().getInt(pref, Runtime.getRuntime().availableProcessors());
|
---|
[9351] | 1207 | return new ForkJoinPool(noThreads, new ForkJoinPool.ForkJoinWorkerThreadFactory() {
|
---|
| 1208 | final AtomicLong count = new AtomicLong(0);
|
---|
| 1209 | @Override
|
---|
| 1210 | public ForkJoinWorkerThread newThread(ForkJoinPool pool) {
|
---|
| 1211 | final ForkJoinWorkerThread thread = ForkJoinPool.defaultForkJoinWorkerThreadFactory.newThread(pool);
|
---|
| 1212 | thread.setName(String.format(Locale.ENGLISH, nameFormat, count.getAndIncrement()));
|
---|
| 1213 | thread.setPriority(threadPriority);
|
---|
| 1214 | return thread;
|
---|
| 1215 | }
|
---|
| 1216 | }, null, true);
|
---|
[7423] | 1217 | }
|
---|
[7894] | 1218 |
|
---|
| 1219 | /**
|
---|
[9352] | 1220 | * Returns an executor which executes commands in the calling thread
|
---|
| 1221 | * @return an executor
|
---|
| 1222 | */
|
---|
| 1223 | public static Executor newDirectExecutor() {
|
---|
[10717] | 1224 | return Runnable::run;
|
---|
[9352] | 1225 | }
|
---|
| 1226 |
|
---|
| 1227 | /**
|
---|
[7894] | 1228 | * Updates a given system property.
|
---|
| 1229 | * @param key The property key
|
---|
| 1230 | * @param value The property value
|
---|
| 1231 | * @return the previous value of the system property, or {@code null} if it did not have one.
|
---|
| 1232 | * @since 7894
|
---|
| 1233 | */
|
---|
| 1234 | public static String updateSystemProperty(String key, String value) {
|
---|
| 1235 | if (value != null) {
|
---|
| 1236 | String old = System.setProperty(key, value);
|
---|
[12620] | 1237 | if (Logging.isDebugEnabled() && !value.equals(old)) {
|
---|
[10931] | 1238 | if (!key.toLowerCase(Locale.ENGLISH).contains("password")) {
|
---|
[12620] | 1239 | Logging.debug("System property '" + key + "' set to '" + value + "'. Old value was '" + old + '\'');
|
---|
[10931] | 1240 | } else {
|
---|
[12620] | 1241 | Logging.debug("System property '" + key + "' changed.");
|
---|
[10931] | 1242 | }
|
---|
[7894] | 1243 | }
|
---|
| 1244 | return old;
|
---|
| 1245 | }
|
---|
| 1246 | return null;
|
---|
| 1247 | }
|
---|
[8287] | 1248 |
|
---|
| 1249 | /**
|
---|
[10404] | 1250 | * Returns a new secure DOM builder, supporting XML namespaces.
|
---|
| 1251 | * @return a new secure DOM builder, supporting XML namespaces
|
---|
| 1252 | * @throws ParserConfigurationException if a parser cannot be created which satisfies the requested configuration.
|
---|
| 1253 | * @since 10404
|
---|
| 1254 | */
|
---|
| 1255 | public static DocumentBuilder newSafeDOMBuilder() throws ParserConfigurationException {
|
---|
| 1256 | DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
|
---|
| 1257 | builderFactory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
|
---|
| 1258 | builderFactory.setNamespaceAware(true);
|
---|
| 1259 | builderFactory.setValidating(false);
|
---|
| 1260 | return builderFactory.newDocumentBuilder();
|
---|
| 1261 | }
|
---|
| 1262 |
|
---|
| 1263 | /**
|
---|
| 1264 | * Parse the content given {@link InputStream} as XML.
|
---|
| 1265 | * This method uses a secure DOM builder, supporting XML namespaces.
|
---|
| 1266 | *
|
---|
| 1267 | * @param is The InputStream containing the content to be parsed.
|
---|
| 1268 | * @return the result DOM document
|
---|
| 1269 | * @throws ParserConfigurationException if a parser cannot be created which satisfies the requested configuration.
|
---|
| 1270 | * @throws IOException if any IO errors occur.
|
---|
| 1271 | * @throws SAXException for SAX errors.
|
---|
| 1272 | * @since 10404
|
---|
| 1273 | */
|
---|
| 1274 | public static Document parseSafeDOM(InputStream is) throws ParserConfigurationException, IOException, SAXException {
|
---|
| 1275 | long start = System.currentTimeMillis();
|
---|
[12620] | 1276 | Logging.debug("Starting DOM parsing of {0}", is);
|
---|
[10404] | 1277 | Document result = newSafeDOMBuilder().parse(is);
|
---|
[12620] | 1278 | if (Logging.isDebugEnabled()) {
|
---|
| 1279 | Logging.debug("DOM parsing done in {0}", getDurationString(System.currentTimeMillis() - start));
|
---|
[10404] | 1280 | }
|
---|
| 1281 | return result;
|
---|
| 1282 | }
|
---|
| 1283 |
|
---|
| 1284 | /**
|
---|
[8287] | 1285 | * Returns a new secure SAX parser, supporting XML namespaces.
|
---|
| 1286 | * @return a new secure SAX parser, supporting XML namespaces
|
---|
| 1287 | * @throws ParserConfigurationException if a parser cannot be created which satisfies the requested configuration.
|
---|
| 1288 | * @throws SAXException for SAX errors.
|
---|
| 1289 | * @since 8287
|
---|
| 1290 | */
|
---|
| 1291 | public static SAXParser newSafeSAXParser() throws ParserConfigurationException, SAXException {
|
---|
| 1292 | SAXParserFactory parserFactory = SAXParserFactory.newInstance();
|
---|
| 1293 | parserFactory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
|
---|
| 1294 | parserFactory.setNamespaceAware(true);
|
---|
| 1295 | return parserFactory.newSAXParser();
|
---|
| 1296 | }
|
---|
[8347] | 1297 |
|
---|
| 1298 | /**
|
---|
| 1299 | * Parse the content given {@link org.xml.sax.InputSource} as XML using the specified {@link org.xml.sax.helpers.DefaultHandler}.
|
---|
| 1300 | * This method uses a secure SAX parser, supporting XML namespaces.
|
---|
| 1301 | *
|
---|
| 1302 | * @param is The InputSource containing the content to be parsed.
|
---|
| 1303 | * @param dh The SAX DefaultHandler to use.
|
---|
| 1304 | * @throws ParserConfigurationException if a parser cannot be created which satisfies the requested configuration.
|
---|
| 1305 | * @throws SAXException for SAX errors.
|
---|
| 1306 | * @throws IOException if any IO errors occur.
|
---|
| 1307 | * @since 8347
|
---|
| 1308 | */
|
---|
| 1309 | public static void parseSafeSAX(InputSource is, DefaultHandler dh) throws ParserConfigurationException, SAXException, IOException {
|
---|
| 1310 | long start = System.currentTimeMillis();
|
---|
[12620] | 1311 | Logging.debug("Starting SAX parsing of {0} using {1}", is, dh);
|
---|
[8347] | 1312 | newSafeSAXParser().parse(is, dh);
|
---|
[12620] | 1313 | if (Logging.isDebugEnabled()) {
|
---|
| 1314 | Logging.debug("SAX parsing done in {0}", getDurationString(System.currentTimeMillis() - start));
|
---|
[8347] | 1315 | }
|
---|
| 1316 | }
|
---|
[8404] | 1317 |
|
---|
| 1318 | /**
|
---|
| 1319 | * Determines if the filename has one of the given extensions, in a robust manner.
|
---|
| 1320 | * The comparison is case and locale insensitive.
|
---|
| 1321 | * @param filename The file name
|
---|
| 1322 | * @param extensions The list of extensions to look for (without dot)
|
---|
| 1323 | * @return {@code true} if the filename has one of the given extensions
|
---|
| 1324 | * @since 8404
|
---|
| 1325 | */
|
---|
[8567] | 1326 | public static boolean hasExtension(String filename, String... extensions) {
|
---|
[8933] | 1327 | String name = filename.toLowerCase(Locale.ENGLISH).replace("?format=raw", "");
|
---|
[8513] | 1328 | for (String ext : extensions) {
|
---|
[8846] | 1329 | if (name.endsWith('.' + ext.toLowerCase(Locale.ENGLISH)))
|
---|
[8404] | 1330 | return true;
|
---|
[8513] | 1331 | }
|
---|
[8404] | 1332 | return false;
|
---|
| 1333 | }
|
---|
| 1334 |
|
---|
| 1335 | /**
|
---|
| 1336 | * Determines if the file's name has one of the given extensions, in a robust manner.
|
---|
| 1337 | * The comparison is case and locale insensitive.
|
---|
| 1338 | * @param file The file
|
---|
| 1339 | * @param extensions The list of extensions to look for (without dot)
|
---|
| 1340 | * @return {@code true} if the file's name has one of the given extensions
|
---|
| 1341 | * @since 8404
|
---|
| 1342 | */
|
---|
[8567] | 1343 | public static boolean hasExtension(File file, String... extensions) {
|
---|
[8404] | 1344 | return hasExtension(file.getName(), extensions);
|
---|
| 1345 | }
|
---|
[8568] | 1346 |
|
---|
| 1347 | /**
|
---|
| 1348 | * Reads the input stream and closes the stream at the end of processing (regardless if an exception was thrown)
|
---|
| 1349 | *
|
---|
[8570] | 1350 | * @param stream input stream
|
---|
[11330] | 1351 | * @return byte array of data in input stream (empty if stream is null)
|
---|
[8570] | 1352 | * @throws IOException if any I/O error occurs
|
---|
[8568] | 1353 | */
|
---|
| 1354 | public static byte[] readBytesFromStream(InputStream stream) throws IOException {
|
---|
[11320] | 1355 | if (stream == null) {
|
---|
[11330] | 1356 | return new byte[0];
|
---|
[11320] | 1357 | }
|
---|
[8568] | 1358 | try {
|
---|
| 1359 | ByteArrayOutputStream bout = new ByteArrayOutputStream(stream.available());
|
---|
| 1360 | byte[] buffer = new byte[2048];
|
---|
| 1361 | boolean finished = false;
|
---|
| 1362 | do {
|
---|
| 1363 | int read = stream.read(buffer);
|
---|
| 1364 | if (read >= 0) {
|
---|
| 1365 | bout.write(buffer, 0, read);
|
---|
| 1366 | } else {
|
---|
| 1367 | finished = true;
|
---|
| 1368 | }
|
---|
| 1369 | } while (!finished);
|
---|
| 1370 | if (bout.size() == 0)
|
---|
[11330] | 1371 | return new byte[0];
|
---|
[8568] | 1372 | return bout.toByteArray();
|
---|
| 1373 | } finally {
|
---|
[11330] | 1374 | stream.close();
|
---|
[8568] | 1375 | }
|
---|
| 1376 | }
|
---|
[8574] | 1377 |
|
---|
| 1378 | /**
|
---|
| 1379 | * Returns the initial capacity to pass to the HashMap / HashSet constructor
|
---|
| 1380 | * when it is initialized with a known number of entries.
|
---|
[8602] | 1381 | *
|
---|
[8574] | 1382 | * When a HashMap is filled with entries, the underlying array is copied over
|
---|
| 1383 | * to a larger one multiple times. To avoid this process when the number of
|
---|
| 1384 | * entries is known in advance, the initial capacity of the array can be
|
---|
| 1385 | * given to the HashMap constructor. This method returns a suitable value
|
---|
| 1386 | * that avoids rehashing but doesn't waste memory.
|
---|
| 1387 | * @param nEntries the number of entries expected
|
---|
| 1388 | * @param loadFactor the load factor
|
---|
| 1389 | * @return the initial capacity for the HashMap constructor
|
---|
| 1390 | */
|
---|
[9987] | 1391 | public static int hashMapInitialCapacity(int nEntries, double loadFactor) {
|
---|
[8574] | 1392 | return (int) Math.ceil(nEntries / loadFactor);
|
---|
| 1393 | }
|
---|
| 1394 |
|
---|
| 1395 | /**
|
---|
| 1396 | * Returns the initial capacity to pass to the HashMap / HashSet constructor
|
---|
| 1397 | * when it is initialized with a known number of entries.
|
---|
[8602] | 1398 | *
|
---|
[8574] | 1399 | * When a HashMap is filled with entries, the underlying array is copied over
|
---|
| 1400 | * to a larger one multiple times. To avoid this process when the number of
|
---|
| 1401 | * entries is known in advance, the initial capacity of the array can be
|
---|
| 1402 | * given to the HashMap constructor. This method returns a suitable value
|
---|
| 1403 | * that avoids rehashing but doesn't waste memory.
|
---|
[8602] | 1404 | *
|
---|
[8574] | 1405 | * Assumes default load factor (0.75).
|
---|
| 1406 | * @param nEntries the number of entries expected
|
---|
| 1407 | * @return the initial capacity for the HashMap constructor
|
---|
| 1408 | */
|
---|
| 1409 | public static int hashMapInitialCapacity(int nEntries) {
|
---|
[9987] | 1410 | return hashMapInitialCapacity(nEntries, 0.75d);
|
---|
[8574] | 1411 | }
|
---|
[8994] | 1412 |
|
---|
| 1413 | /**
|
---|
| 1414 | * Utility class to save a string along with its rendering direction
|
---|
| 1415 | * (left-to-right or right-to-left).
|
---|
| 1416 | */
|
---|
| 1417 | private static class DirectionString {
|
---|
[8997] | 1418 | public final int direction;
|
---|
| 1419 | public final String str;
|
---|
[8994] | 1420 |
|
---|
[8997] | 1421 | DirectionString(int direction, String str) {
|
---|
[8994] | 1422 | this.direction = direction;
|
---|
| 1423 | this.str = str;
|
---|
| 1424 | }
|
---|
| 1425 | }
|
---|
| 1426 |
|
---|
| 1427 | /**
|
---|
| 1428 | * Convert a string to a list of {@link GlyphVector}s. The string may contain
|
---|
| 1429 | * bi-directional text. The result will be in correct visual order.
|
---|
| 1430 | * Each element of the resulting list corresponds to one section of the
|
---|
| 1431 | * string with consistent writing direction (left-to-right or right-to-left).
|
---|
| 1432 | *
|
---|
| 1433 | * @param string the string to render
|
---|
| 1434 | * @param font the font
|
---|
| 1435 | * @param frc a FontRenderContext object
|
---|
| 1436 | * @return a list of GlyphVectors
|
---|
| 1437 | */
|
---|
| 1438 | public static List<GlyphVector> getGlyphVectorsBidi(String string, Font font, FontRenderContext frc) {
|
---|
| 1439 | List<GlyphVector> gvs = new ArrayList<>();
|
---|
| 1440 | Bidi bidi = new Bidi(string, Bidi.DIRECTION_DEFAULT_LEFT_TO_RIGHT);
|
---|
| 1441 | byte[] levels = new byte[bidi.getRunCount()];
|
---|
| 1442 | DirectionString[] dirStrings = new DirectionString[levels.length];
|
---|
| 1443 | for (int i = 0; i < levels.length; ++i) {
|
---|
| 1444 | levels[i] = (byte) bidi.getRunLevel(i);
|
---|
| 1445 | String substr = string.substring(bidi.getRunStart(i), bidi.getRunLimit(i));
|
---|
| 1446 | int dir = levels[i] % 2 == 0 ? Bidi.DIRECTION_LEFT_TO_RIGHT : Bidi.DIRECTION_RIGHT_TO_LEFT;
|
---|
| 1447 | dirStrings[i] = new DirectionString(dir, substr);
|
---|
| 1448 | }
|
---|
| 1449 | Bidi.reorderVisually(levels, 0, dirStrings, 0, levels.length);
|
---|
| 1450 | for (int i = 0; i < dirStrings.length; ++i) {
|
---|
| 1451 | char[] chars = dirStrings[i].str.toCharArray();
|
---|
| 1452 | gvs.add(font.layoutGlyphVector(frc, chars, 0, chars.length, dirStrings[i].direction));
|
---|
| 1453 | }
|
---|
| 1454 | return gvs;
|
---|
| 1455 | }
|
---|
| 1456 |
|
---|
[10223] | 1457 | /**
|
---|
| 1458 | * Sets {@code AccessibleObject}(s) accessible.
|
---|
| 1459 | * @param objects objects
|
---|
| 1460 | * @see AccessibleObject#setAccessible
|
---|
| 1461 | * @since 10223
|
---|
| 1462 | */
|
---|
[12798] | 1463 | public static void setObjectsAccessible(final AccessibleObject... objects) {
|
---|
[10223] | 1464 | if (objects != null && objects.length > 0) {
|
---|
[10616] | 1465 | AccessController.doPrivileged((PrivilegedAction<Object>) () -> {
|
---|
| 1466 | for (AccessibleObject o : objects) {
|
---|
| 1467 | o.setAccessible(true);
|
---|
[10223] | 1468 | }
|
---|
[10616] | 1469 | return null;
|
---|
[10223] | 1470 | });
|
---|
| 1471 | }
|
---|
| 1472 | }
|
---|
[10805] | 1473 |
|
---|
| 1474 | /**
|
---|
| 1475 | * Clamp a value to the given range
|
---|
| 1476 | * @param val The value
|
---|
| 1477 | * @param min minimum value
|
---|
| 1478 | * @param max maximum value
|
---|
| 1479 | * @return the value
|
---|
[11740] | 1480 | * @throws IllegalArgumentException if {@code min > max}
|
---|
[10805] | 1481 | * @since 10805
|
---|
| 1482 | */
|
---|
| 1483 | public static double clamp(double val, double min, double max) {
|
---|
[11721] | 1484 | if (min > max) {
|
---|
[11732] | 1485 | throw new IllegalArgumentException(MessageFormat.format("Parameter min ({0}) cannot be greater than max ({1})", min, max));
|
---|
[11721] | 1486 | } else if (val < min) {
|
---|
[10805] | 1487 | return min;
|
---|
| 1488 | } else if (val > max) {
|
---|
| 1489 | return max;
|
---|
| 1490 | } else {
|
---|
| 1491 | return val;
|
---|
| 1492 | }
|
---|
| 1493 | }
|
---|
[11055] | 1494 |
|
---|
| 1495 | /**
|
---|
| 1496 | * Clamp a integer value to the given range
|
---|
| 1497 | * @param val The value
|
---|
| 1498 | * @param min minimum value
|
---|
| 1499 | * @param max maximum value
|
---|
| 1500 | * @return the value
|
---|
[11740] | 1501 | * @throws IllegalArgumentException if {@code min > max}
|
---|
[11056] | 1502 | * @since 11055
|
---|
[11055] | 1503 | */
|
---|
| 1504 | public static int clamp(int val, int min, int max) {
|
---|
[11721] | 1505 | if (min > max) {
|
---|
[11732] | 1506 | throw new IllegalArgumentException(MessageFormat.format("Parameter min ({0}) cannot be greater than max ({1})", min, max));
|
---|
[11721] | 1507 | } else if (val < min) {
|
---|
[11055] | 1508 | return min;
|
---|
| 1509 | } else if (val > max) {
|
---|
| 1510 | return max;
|
---|
| 1511 | } else {
|
---|
| 1512 | return val;
|
---|
| 1513 | }
|
---|
| 1514 | }
|
---|
[12013] | 1515 |
|
---|
| 1516 | /**
|
---|
| 1517 | * Convert angle from radians to degrees.
|
---|
| 1518 | *
|
---|
| 1519 | * Replacement for {@link Math#toDegrees(double)} to match the Java 9
|
---|
| 1520 | * version of that method. (Can be removed when JOSM support for Java 8 ends.)
|
---|
| 1521 | * Only relevant in relation to ProjectionRegressionTest.
|
---|
| 1522 | * @param angleRad an angle in radians
|
---|
| 1523 | * @return the same angle in degrees
|
---|
[12015] | 1524 | * @see <a href="https://josm.openstreetmap.de/ticket/11889">#11889</a>
|
---|
| 1525 | * @since 12013
|
---|
[12013] | 1526 | */
|
---|
| 1527 | public static double toDegrees(double angleRad) {
|
---|
| 1528 | return angleRad * TO_DEGREES;
|
---|
| 1529 | }
|
---|
| 1530 |
|
---|
| 1531 | /**
|
---|
| 1532 | * Convert angle from degrees to radians.
|
---|
| 1533 | *
|
---|
| 1534 | * Replacement for {@link Math#toRadians(double)} to match the Java 9
|
---|
| 1535 | * version of that method. (Can be removed when JOSM support for Java 8 ends.)
|
---|
| 1536 | * Only relevant in relation to ProjectionRegressionTest.
|
---|
| 1537 | * @param angleDeg an angle in degrees
|
---|
| 1538 | * @return the same angle in radians
|
---|
[12015] | 1539 | * @see <a href="https://josm.openstreetmap.de/ticket/11889">#11889</a>
|
---|
| 1540 | * @since 12013
|
---|
[12013] | 1541 | */
|
---|
| 1542 | public static double toRadians(double angleDeg) {
|
---|
| 1543 | return angleDeg * TO_RADIANS;
|
---|
| 1544 | }
|
---|
[12130] | 1545 |
|
---|
| 1546 | /**
|
---|
| 1547 | * Returns the Java version as an int value.
|
---|
| 1548 | * @return the Java version as an int value (8, 9, etc.)
|
---|
| 1549 | * @since 12130
|
---|
| 1550 | */
|
---|
| 1551 | public static int getJavaVersion() {
|
---|
| 1552 | String version = System.getProperty("java.version");
|
---|
| 1553 | if (version.startsWith("1.")) {
|
---|
| 1554 | version = version.substring(2);
|
---|
| 1555 | }
|
---|
| 1556 | // Allow these formats:
|
---|
| 1557 | // 1.8.0_72-ea
|
---|
| 1558 | // 9-ea
|
---|
| 1559 | // 9
|
---|
| 1560 | // 9.0.1
|
---|
| 1561 | int dotPos = version.indexOf('.');
|
---|
| 1562 | int dashPos = version.indexOf('-');
|
---|
| 1563 | return Integer.parseInt(version.substring(0,
|
---|
| 1564 | dotPos > -1 ? dotPos : dashPos > -1 ? dashPos : 1));
|
---|
| 1565 | }
|
---|
[12217] | 1566 |
|
---|
| 1567 | /**
|
---|
| 1568 | * Returns the Java update as an int value.
|
---|
| 1569 | * @return the Java update as an int value (121, 131, etc.)
|
---|
| 1570 | * @since 12217
|
---|
| 1571 | */
|
---|
| 1572 | public static int getJavaUpdate() {
|
---|
| 1573 | String version = System.getProperty("java.version");
|
---|
| 1574 | if (version.startsWith("1.")) {
|
---|
| 1575 | version = version.substring(2);
|
---|
| 1576 | }
|
---|
| 1577 | // Allow these formats:
|
---|
| 1578 | // 1.8.0_72-ea
|
---|
| 1579 | // 9-ea
|
---|
| 1580 | // 9
|
---|
| 1581 | // 9.0.1
|
---|
| 1582 | int undePos = version.indexOf('_');
|
---|
| 1583 | int dashPos = version.indexOf('-');
|
---|
| 1584 | if (undePos > -1) {
|
---|
| 1585 | return Integer.parseInt(version.substring(undePos + 1,
|
---|
| 1586 | dashPos > -1 ? dashPos : version.length()));
|
---|
| 1587 | }
|
---|
| 1588 | int firstDotPos = version.indexOf('.');
|
---|
| 1589 | int lastDotPos = version.lastIndexOf('.');
|
---|
[12703] | 1590 | if (firstDotPos == lastDotPos) {
|
---|
| 1591 | return 0;
|
---|
| 1592 | }
|
---|
[12798] | 1593 | return firstDotPos > -1 ? Integer.parseInt(version.substring(firstDotPos + 1,
|
---|
[12217] | 1594 | lastDotPos > -1 ? lastDotPos : version.length())) : 0;
|
---|
| 1595 | }
|
---|
| 1596 |
|
---|
| 1597 | /**
|
---|
| 1598 | * Returns the Java build number as an int value.
|
---|
| 1599 | * @return the Java build number as an int value (0, 1, etc.)
|
---|
| 1600 | * @since 12217
|
---|
| 1601 | */
|
---|
| 1602 | public static int getJavaBuild() {
|
---|
| 1603 | String version = System.getProperty("java.runtime.version");
|
---|
| 1604 | int bPos = version.indexOf('b');
|
---|
| 1605 | int pPos = version.indexOf('+');
|
---|
[12703] | 1606 | try {
|
---|
| 1607 | return Integer.parseInt(version.substring(bPos > -1 ? bPos + 1 : pPos + 1, version.length()));
|
---|
| 1608 | } catch (NumberFormatException e) {
|
---|
| 1609 | Logging.trace(e);
|
---|
| 1610 | return 0;
|
---|
| 1611 | }
|
---|
[12217] | 1612 | }
|
---|
[12219] | 1613 |
|
---|
| 1614 | /**
|
---|
| 1615 | * Returns the JRE expiration date.
|
---|
| 1616 | * @return the JRE expiration date, or null
|
---|
| 1617 | * @since 12219
|
---|
| 1618 | */
|
---|
| 1619 | public static Date getJavaExpirationDate() {
|
---|
| 1620 | try {
|
---|
[12238] | 1621 | Object value = null;
|
---|
| 1622 | Class<?> c = Class.forName("com.sun.deploy.config.BuiltInProperties");
|
---|
| 1623 | try {
|
---|
| 1624 | value = c.getDeclaredField("JRE_EXPIRATION_DATE").get(null);
|
---|
| 1625 | } catch (NoSuchFieldException e) {
|
---|
| 1626 | // Field is gone with Java 9, there's a method instead
|
---|
[12620] | 1627 | Logging.trace(e);
|
---|
[12238] | 1628 | value = c.getDeclaredMethod("getProperty", String.class).invoke(null, "JRE_EXPIRATION_DATE");
|
---|
| 1629 | }
|
---|
[12219] | 1630 | if (value instanceof String) {
|
---|
| 1631 | return DateFormat.getDateInstance(3, Locale.US).parse((String) value);
|
---|
| 1632 | }
|
---|
| 1633 | } catch (IllegalArgumentException | ReflectiveOperationException | SecurityException | ParseException e) {
|
---|
[12620] | 1634 | Logging.debug(e);
|
---|
[12219] | 1635 | }
|
---|
| 1636 | return null;
|
---|
| 1637 | }
|
---|
| 1638 |
|
---|
| 1639 | /**
|
---|
| 1640 | * Returns the latest version of Java, from Oracle website.
|
---|
| 1641 | * @return the latest version of Java, from Oracle website
|
---|
| 1642 | * @since 12219
|
---|
| 1643 | */
|
---|
| 1644 | public static String getJavaLatestVersion() {
|
---|
| 1645 | try {
|
---|
[12854] | 1646 | return HttpClient.create(
|
---|
| 1647 | new URL(Config.getPref().get(
|
---|
| 1648 | "java.baseline.version.url",
|
---|
| 1649 | "http://javadl-esd-secure.oracle.com/update/baseline.version")))
|
---|
[12219] | 1650 | .connect().fetchContent().split("\n")[0];
|
---|
| 1651 | } catch (IOException e) {
|
---|
[12620] | 1652 | Logging.error(e);
|
---|
[12219] | 1653 | }
|
---|
| 1654 | return null;
|
---|
| 1655 | }
|
---|
[12594] | 1656 |
|
---|
| 1657 | /**
|
---|
| 1658 | * Get a function that converts an object to a singleton stream of a certain
|
---|
| 1659 | * class (or null if the object cannot be cast to that class).
|
---|
| 1660 | *
|
---|
| 1661 | * Can be useful in relation with streams, but be aware of the performance
|
---|
| 1662 | * implications of creating a stream for each element.
|
---|
| 1663 | * @param <T> type of the objects to convert
|
---|
| 1664 | * @param <U> type of the elements in the resulting stream
|
---|
| 1665 | * @param klass the class U
|
---|
| 1666 | * @return function converting an object to a singleton stream or null
|
---|
[12604] | 1667 | * @since 12594
|
---|
[12594] | 1668 | */
|
---|
| 1669 | public static <T, U> Function<T, Stream<U>> castToStream(Class<U> klass) {
|
---|
| 1670 | return x -> klass.isInstance(x) ? Stream.of(klass.cast(x)) : null;
|
---|
| 1671 | }
|
---|
[12604] | 1672 |
|
---|
| 1673 | /**
|
---|
| 1674 | * Helper method to replace the "<code>instanceof</code>-check and cast" pattern.
|
---|
| 1675 | * Checks if an object is instance of class T and performs an action if that
|
---|
| 1676 | * is the case.
|
---|
| 1677 | * Syntactic sugar to avoid typing the class name two times, when one time
|
---|
| 1678 | * would suffice.
|
---|
| 1679 | * @param <T> the type for the instanceof check and cast
|
---|
| 1680 | * @param o the object to check and cast
|
---|
| 1681 | * @param klass the class T
|
---|
| 1682 | * @param consumer action to take when o is and instance of T
|
---|
| 1683 | * @since 12604
|
---|
| 1684 | */
|
---|
[12618] | 1685 | @SuppressWarnings("unchecked")
|
---|
[12604] | 1686 | public static <T> void instanceOfThen(Object o, Class<T> klass, Consumer<? super T> consumer) {
|
---|
| 1687 | if (klass.isInstance(o)) {
|
---|
| 1688 | consumer.accept((T) o);
|
---|
| 1689 | }
|
---|
| 1690 | }
|
---|
[12987] | 1691 |
|
---|
| 1692 | /**
|
---|
| 1693 | * Helper method to replace the "<code>instanceof</code>-check and cast" pattern.
|
---|
| 1694 | *
|
---|
| 1695 | * @param <T> the type for the instanceof check and cast
|
---|
| 1696 | * @param o the object to check and cast
|
---|
| 1697 | * @param klass the class T
|
---|
| 1698 | * @return {@link Optional} containing the result of the cast, if it is possible, an empty
|
---|
| 1699 | * Optional otherwise
|
---|
| 1700 | */
|
---|
| 1701 | @SuppressWarnings("unchecked")
|
---|
| 1702 | public static <T> Optional<T> instanceOfAndCast(Object o, Class<T> klass) {
|
---|
| 1703 | if (klass.isInstance(o))
|
---|
| 1704 | return Optional.of((T) o);
|
---|
| 1705 | return Optional.empty();
|
---|
| 1706 | }
|
---|
| 1707 |
|
---|
[4069] | 1708 | }
|
---|