[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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[6354] | 4 | import static org.openstreetmap.josm.tools.I18n.tr;
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| 5 | import static org.openstreetmap.josm.tools.I18n.trn;
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| 6 |
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[3859] | 7 | import java.awt.Color;
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[4380] | 8 | import java.awt.Toolkit;
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| 9 | import java.awt.datatransfer.Clipboard;
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| 10 | import java.awt.datatransfer.ClipboardOwner;
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| 11 | import java.awt.datatransfer.DataFlavor;
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| 12 | import java.awt.datatransfer.StringSelection;
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| 13 | import java.awt.datatransfer.Transferable;
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| 14 | import java.awt.datatransfer.UnsupportedFlavorException;
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[5868] | 15 | import java.io.BufferedReader;
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[5874] | 16 | import java.io.Closeable;
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[4065] | 17 | import java.io.File;
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| 18 | import java.io.IOException;
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| 19 | import java.io.InputStream;
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[5868] | 20 | import java.io.InputStreamReader;
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[4065] | 21 | import java.io.OutputStream;
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[6972] | 22 | import java.io.UnsupportedEncodingException;
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[5587] | 23 | import java.net.HttpURLConnection;
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[6615] | 24 | import java.net.MalformedURLException;
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[5587] | 25 | import java.net.URL;
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[5868] | 26 | import java.net.URLConnection;
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[6972] | 27 | import java.net.URLEncoder;
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[7082] | 28 | import java.nio.charset.StandardCharsets;
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[7003] | 29 | import java.nio.file.Files;
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| 30 | import java.nio.file.Path;
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| 31 | import java.nio.file.StandardCopyOption;
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[4403] | 32 | import java.security.MessageDigest;
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| 33 | import java.security.NoSuchAlgorithmException;
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[4069] | 34 | import java.text.MessageFormat;
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[5578] | 35 | import java.util.AbstractCollection;
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| 36 | import java.util.AbstractList;
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[4668] | 37 | import java.util.ArrayList;
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[6221] | 38 | import java.util.Arrays;
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[3848] | 39 | import java.util.Collection;
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[6652] | 40 | import java.util.Collections;
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[4816] | 41 | import java.util.Iterator;
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[4668] | 42 | import java.util.List;
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[7423] | 43 | import java.util.concurrent.ExecutorService;
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| 44 | import java.util.concurrent.Executors;
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[6538] | 45 | import java.util.regex.Matcher;
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[6823] | 46 | import java.util.regex.Pattern;
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[6421] | 47 | import java.util.zip.GZIPInputStream;
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[7119] | 48 | import java.util.zip.ZipEntry;
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[5874] | 49 | import java.util.zip.ZipFile;
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[7119] | 50 | import java.util.zip.ZipInputStream;
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[3848] | 51 |
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[8287] | 52 | import javax.xml.XMLConstants;
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| 53 | import javax.xml.parsers.ParserConfigurationException;
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| 54 | import javax.xml.parsers.SAXParser;
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| 55 | import javax.xml.parsers.SAXParserFactory;
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| 56 |
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[7867] | 57 | import org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream;
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[5868] | 58 | import org.openstreetmap.josm.Main;
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[5587] | 59 | import org.openstreetmap.josm.data.Version;
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[8287] | 60 | import org.xml.sax.SAXException;
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[5587] | 61 |
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[4069] | 62 | /**
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| 63 | * Basic utils, that can be useful in different parts of the program.
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| 64 | */
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[6362] | 65 | public final class Utils {
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[3504] | 66 |
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[6823] | 67 | public static final Pattern WHITE_SPACES_PATTERN = Pattern.compile("\\s+");
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| 68 |
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[6360] | 69 | private Utils() {
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| 70 | // Hide default constructor for utils classes
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| 71 | }
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| 72 |
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[6806] | 73 | private static final int MILLIS_OF_SECOND = 1000;
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| 74 | private static final int MILLIS_OF_MINUTE = 60000;
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| 75 | private static final int MILLIS_OF_HOUR = 3600000;
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| 76 | private static final int MILLIS_OF_DAY = 86400000;
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| 77 |
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[6999] | 78 | public static final String URL_CHARS = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~:/?#[]@!$&'()*+,;=%";
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| 79 |
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[6772] | 80 | /**
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| 81 | * Tests whether {@code predicate} applies to at least one elements from {@code collection}.
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| 82 | */
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[3836] | 83 | public static <T> boolean exists(Iterable<? extends T> collection, Predicate<? super T> predicate) {
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| 84 | for (T item : collection) {
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| 85 | if (predicate.evaluate(item))
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[3504] | 86 | return true;
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| 87 | }
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| 88 | return false;
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| 89 | }
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[3674] | 90 |
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[6772] | 91 | /**
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| 92 | * Tests whether {@code predicate} applies to all elements from {@code collection}.
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| 93 | */
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| 94 | public static <T> boolean forAll(Iterable<? extends T> collection, Predicate<? super T> predicate) {
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| 95 | return !exists(collection, Predicates.not(predicate));
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| 96 | }
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| 97 |
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[4065] | 98 | public static <T> boolean exists(Iterable<T> collection, Class<? extends T> klass) {
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[3836] | 99 | for (Object item : collection) {
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| 100 | if (klass.isInstance(item))
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| 101 | return true;
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| 102 | }
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| 103 | return false;
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| 104 | }
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| 105 |
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| 106 | public static <T> T find(Iterable<? extends T> collection, Predicate<? super T> predicate) {
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| 107 | for (T item : collection) {
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| 108 | if (predicate.evaluate(item))
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| 109 | return item;
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| 110 | }
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| 111 | return null;
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| 112 | }
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| 113 |
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[4065] | 114 | @SuppressWarnings("unchecked")
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| 115 | public static <T> T find(Iterable<? super T> collection, Class<? extends T> klass) {
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[3836] | 116 | for (Object item : collection) {
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[4065] | 117 | if (klass.isInstance(item))
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| 118 | return (T) item;
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[3836] | 119 | }
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| 120 | return null;
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| 121 | }
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[4408] | 122 |
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[5159] | 123 | public static <T> Collection<T> filter(Collection<? extends T> collection, Predicate<? super T> predicate) {
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[7005] | 124 | return new FilteredCollection<>(collection, predicate);
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[5159] | 125 | }
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[4668] | 126 |
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[6610] | 127 | /**
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| 128 | * Returns the first element from {@code items} which is non-null, or null if all elements are null.
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[7019] | 129 | * @param items the items to look for
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| 130 | * @return first non-null item if there is one
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[6610] | 131 | */
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[7019] | 132 | @SafeVarargs
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[5159] | 133 | public static <T> T firstNonNull(T... items) {
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| 134 | for (T i : items) {
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| 135 | if (i != null) {
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| 136 | return i;
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| 137 | }
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| 138 | }
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| 139 | return null;
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| 140 | }
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| 141 |
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[4100] | 142 | /**
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| 143 | * Filter a collection by (sub)class.
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| 144 | * This is an efficient read-only implementation.
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| 145 | */
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| 146 | public static <S, T extends S> SubclassFilteredCollection<S, T> filteredCollection(Collection<S> collection, final Class<T> klass) {
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[7005] | 147 | return new SubclassFilteredCollection<>(collection, new Predicate<S>() {
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[4100] | 148 | @Override
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| 149 | public boolean evaluate(S o) {
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| 150 | return klass.isInstance(o);
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| 151 | }
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| 152 | });
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| 153 | }
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[3836] | 154 |
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[3869] | 155 | public static <T> int indexOf(Iterable<? extends T> collection, Predicate<? super T> predicate) {
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| 156 | int i = 0;
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| 157 | for (T item : collection) {
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| 158 | if (predicate.evaluate(item))
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| 159 | return i;
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| 160 | i++;
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| 161 | }
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| 162 | return -1;
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| 163 | }
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| 164 |
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[3674] | 165 | /**
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[7867] | 166 | * Returns the minimum of three values.
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| 167 | * @param a an argument.
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| 168 | * @param b another argument.
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| 169 | * @param c another argument.
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| 170 | * @return the smaller of {@code a}, {@code b} and {@code c}.
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[3674] | 171 | */
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| 172 | public static int min(int a, int b, int c) {
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| 173 | if (b < c) {
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| 174 | if (a < b)
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| 175 | return a;
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| 176 | return b;
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| 177 | } else {
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[4065] | 178 | if (a < c)
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[3674] | 179 | return a;
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| 180 | return c;
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| 181 | }
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| 182 | }
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[3711] | 183 |
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[7867] | 184 | /**
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| 185 | * Returns the greater of four {@code int} values. That is, the
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| 186 | * result is the argument closer to the value of
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| 187 | * {@link Integer#MAX_VALUE}. If the arguments have the same value,
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| 188 | * the result is that same value.
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| 189 | *
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| 190 | * @param a an argument.
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| 191 | * @param b another argument.
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| 192 | * @param c another argument.
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| 193 | * @param d another argument.
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| 194 | * @return the larger of {@code a}, {@code b}, {@code c} and {@code d}.
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| 195 | */
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[3836] | 196 | public static int max(int a, int b, int c, int d) {
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| 197 | return Math.max(Math.max(a, b), Math.max(c, d));
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| 198 | }
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| 199 |
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[7867] | 200 | /**
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| 201 | * Ensures a logical condition is met. Otherwise throws an assertion error.
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| 202 | * @param condition the condition to be met
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| 203 | * @param message Formatted error message to raise if condition is not met
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| 204 | * @param data Message parameters, optional
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| 205 | * @throws AssertionError if the condition is not met
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| 206 | */
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[4069] | 207 | public static void ensure(boolean condition, String message, Object...data) {
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| 208 | if (!condition)
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| 209 | throw new AssertionError(
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| 210 | MessageFormat.format(message,data)
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| 211 | );
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| 212 | }
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| 213 |
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[3796] | 214 | /**
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[3711] | 215 | * return the modulus in the range [0, n)
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| 216 | */
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| 217 | public static int mod(int a, int n) {
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| 218 | if (n <= 0)
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[7864] | 219 | throw new IllegalArgumentException("n must be <= 0 but is "+n);
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[3711] | 220 | int res = a % n;
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| 221 | if (res < 0) {
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| 222 | res += n;
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| 223 | }
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| 224 | return res;
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| 225 | }
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| 226 |
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[3848] | 227 | /**
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| 228 | * Joins a list of strings (or objects that can be converted to string via
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| 229 | * Object.toString()) into a single string with fields separated by sep.
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| 230 | * @param sep the separator
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| 231 | * @param values collection of objects, null is converted to the
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| 232 | * empty string
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| 233 | * @return null if values is null. The joined string otherwise.
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| 234 | */
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| 235 | public static String join(String sep, Collection<?> values) {
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[7864] | 236 | CheckParameterUtil.ensureParameterNotNull(sep, "sep");
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[3848] | 237 | if (values == null)
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| 238 | return null;
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| 239 | StringBuilder s = null;
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| 240 | for (Object a : values) {
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| 241 | if (a == null) {
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| 242 | a = "";
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| 243 | }
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[4197] | 244 | if (s != null) {
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[3848] | 245 | s.append(sep).append(a.toString());
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| 246 | } else {
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| 247 | s = new StringBuilder(a.toString());
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| 248 | }
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| 249 | }
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[7867] | 250 | return s != null ? s.toString() : "";
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[3848] | 251 | }
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[3859] | 252 |
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[6524] | 253 | /**
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| 254 | * Converts the given iterable collection as an unordered HTML list.
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| 255 | * @param values The iterable collection
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| 256 | * @return An unordered HTML list
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| 257 | */
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| 258 | public static String joinAsHtmlUnorderedList(Iterable<?> values) {
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[5132] | 259 | StringBuilder sb = new StringBuilder(1024);
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| 260 | sb.append("<ul>");
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| 261 | for (Object i : values) {
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| 262 | sb.append("<li>").append(i).append("</li>");
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| 263 | }
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| 264 | sb.append("</ul>");
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| 265 | return sb.toString();
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| 266 | }
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| 267 |
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[3859] | 268 | /**
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| 269 | * convert Color to String
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| 270 | * (Color.toString() omits alpha value)
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| 271 | */
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| 272 | public static String toString(Color c) {
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| 273 | if (c == null)
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| 274 | return "null";
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| 275 | if (c.getAlpha() == 255)
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| 276 | return String.format("#%06x", c.getRGB() & 0x00ffffff);
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| 277 | else
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| 278 | return String.format("#%06x(alpha=%d)", c.getRGB() & 0x00ffffff, c.getAlpha());
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| 279 | }
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[3865] | 280 |
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| 281 | /**
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[6830] | 282 | * convert float range 0 <= x <= 1 to integer range 0..255
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[3865] | 283 | * when dealing with colors and color alpha value
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[3879] | 284 | * @return null if val is null, the corresponding int if val is in the
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| 285 | * range 0...1. If val is outside that range, return 255
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[3865] | 286 | */
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| 287 | public static Integer color_float2int(Float val) {
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| 288 | if (val == null)
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| 289 | return null;
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| 290 | if (val < 0 || val > 1)
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| 291 | return 255;
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| 292 | return (int) (255f * val + 0.5f);
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| 293 | }
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| 294 |
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| 295 | /**
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[6830] | 296 | * convert integer range 0..255 to float range 0 <= x <= 1
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[6749] | 297 | * when dealing with colors and color alpha value
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[3865] | 298 | */
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| 299 | public static Float color_int2float(Integer val) {
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| 300 | if (val == null)
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| 301 | return null;
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| 302 | if (val < 0 || val > 255)
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| 303 | return 1f;
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| 304 | return ((float) val) / 255f;
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| 305 | }
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| 306 |
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[4069] | 307 | public static Color complement(Color clr) {
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| 308 | return new Color(255 - clr.getRed(), 255 - clr.getGreen(), 255 - clr.getBlue(), clr.getAlpha());
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| 309 | }
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[4065] | 310 |
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[5874] | 311 | /**
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[6221] | 312 | * Copies the given array. Unlike {@link Arrays#copyOf}, this method is null-safe.
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| 313 | * @param array The array to copy
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| 314 | * @return A copy of the original array, or {@code null} if {@code array} is null
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| 315 | * @since 6221
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| 316 | */
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| 317 | public static <T> T[] copyArray(T[] array) {
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| 318 | if (array != null) {
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| 319 | return Arrays.copyOf(array, array.length);
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| 320 | }
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| 321 | return null;
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| 322 | }
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[6792] | 323 |
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[6221] | 324 | /**
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[6222] | 325 | * Copies the given array. Unlike {@link Arrays#copyOf}, this method is null-safe.
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| 326 | * @param array The array to copy
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| 327 | * @return A copy of the original array, or {@code null} if {@code array} is null
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| 328 | * @since 6222
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| 329 | */
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| 330 | public static char[] copyArray(char[] array) {
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| 331 | if (array != null) {
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| 332 | return Arrays.copyOf(array, array.length);
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| 333 | }
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| 334 | return null;
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| 335 | }
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[6792] | 336 |
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[6222] | 337 | /**
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[7436] | 338 | * Copies the given array. Unlike {@link Arrays#copyOf}, this method is null-safe.
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| 339 | * @param array The array to copy
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| 340 | * @return A copy of the original array, or {@code null} if {@code array} is null
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| 341 | * @since 7436
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| 342 | */
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| 343 | public static int[] copyArray(int[] array) {
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| 344 | if (array != null) {
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| 345 | return Arrays.copyOf(array, array.length);
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| 346 | }
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| 347 | return null;
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| 348 | }
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| 349 |
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| 350 | /**
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[7835] | 351 | * Simple file copy function that will overwrite the target file.
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[5874] | 352 | * @param in The source file
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| 353 | * @param out The destination file
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[7003] | 354 | * @return the path to the target file
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[8291] | 355 | * @throws IOException if any I/O error occurs
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| 356 | * @throws IllegalArgumentException if {@code in} or {@code out} is {@code null}
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[7003] | 357 | * @since 7003
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[5874] | 358 | */
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[7835] | 359 | public static Path copyFile(File in, File out) throws IOException {
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[7003] | 360 | CheckParameterUtil.ensureParameterNotNull(in, "in");
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| 361 | CheckParameterUtil.ensureParameterNotNull(out, "out");
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| 362 | return Files.copy(in.toPath(), out.toPath(), StandardCopyOption.REPLACE_EXISTING);
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[5874] | 363 | }
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[6070] | 364 |
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[7835] | 365 | /**
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| 366 | * Recursive directory copy function
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| 367 | * @param in The source directory
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| 368 | * @param out The destination directory
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[8291] | 369 | * @throws IOException if any I/O error ooccurs
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| 370 | * @throws IllegalArgumentException if {@code in} or {@code out} is {@code null}
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[7835] | 371 | * @since 7835
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| 372 | */
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| 373 | public static void copyDirectory(File in, File out) throws IOException {
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| 374 | CheckParameterUtil.ensureParameterNotNull(in, "in");
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| 375 | CheckParameterUtil.ensureParameterNotNull(out, "out");
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| 376 | if (!out.exists() && !out.mkdirs()) {
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| 377 | Main.warn("Unable to create directory "+out.getPath());
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| 378 | }
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| 379 | for (File f : in.listFiles()) {
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| 380 | File target = new File(out, f.getName());
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| 381 | if (f.isDirectory()) {
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| 382 | copyDirectory(f, target);
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| 383 | } else {
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| 384 | copyFile(f, target);
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| 385 | }
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| 386 | }
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| 387 | }
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| 388 |
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[7867] | 389 | /**
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| 390 | * Copy data from source stream to output stream.
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| 391 | * @param source source stream
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| 392 | * @param destination target stream
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| 393 | * @return number of bytes copied
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| 394 | * @throws IOException if any I/O error occurs
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| 395 | */
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[4065] | 396 | public static int copyStream(InputStream source, OutputStream destination) throws IOException {
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| 397 | int count = 0;
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| 398 | byte[] b = new byte[512];
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| 399 | int read;
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| 400 | while ((read = source.read(b)) != -1) {
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| 401 | count += read;
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| 402 | destination.write(b, 0, read);
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| 403 | }
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| 404 | return count;
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| 405 | }
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| 406 |
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[7835] | 407 | /**
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| 408 | * Deletes a directory recursively.
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| 409 | * @param path The directory to delete
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| 410 | * @return <code>true</code> if and only if the file or directory is
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| 411 | * successfully deleted; <code>false</code> otherwise
|
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| 412 | */
|
---|
[4065] | 413 | public static boolean deleteDirectory(File path) {
|
---|
| 414 | if( path.exists() ) {
|
---|
| 415 | File[] files = path.listFiles();
|
---|
[6104] | 416 | for (File file : files) {
|
---|
| 417 | if (file.isDirectory()) {
|
---|
| 418 | deleteDirectory(file);
|
---|
[7835] | 419 | } else if (!file.delete()) {
|
---|
| 420 | Main.warn("Unable to delete file: "+file.getPath());
|
---|
[4065] | 421 | }
|
---|
| 422 | }
|
---|
| 423 | }
|
---|
[7835] | 424 | return path.delete();
|
---|
[4065] | 425 | }
|
---|
[4087] | 426 |
|
---|
| 427 | /**
|
---|
[6823] | 428 | * <p>Utility method for closing a {@link java.io.Closeable} object.</p>
|
---|
[4668] | 429 | *
|
---|
[5874] | 430 | * @param c the closeable object. May be null.
|
---|
[4087] | 431 | */
|
---|
[5874] | 432 | public static void close(Closeable c) {
|
---|
| 433 | if (c == null) return;
|
---|
[4087] | 434 | try {
|
---|
[5874] | 435 | c.close();
|
---|
[6268] | 436 | } catch (IOException e) {
|
---|
| 437 | Main.warn(e);
|
---|
[4087] | 438 | }
|
---|
| 439 | }
|
---|
[6070] | 440 |
|
---|
[4087] | 441 | /**
|
---|
[6823] | 442 | * <p>Utility method for closing a {@link java.util.zip.ZipFile}.</p>
|
---|
[4668] | 443 | *
|
---|
[5874] | 444 | * @param zip the zip file. May be null.
|
---|
[4087] | 445 | */
|
---|
[5874] | 446 | public static void close(ZipFile zip) {
|
---|
| 447 | if (zip == null) return;
|
---|
[4087] | 448 | try {
|
---|
[5874] | 449 | zip.close();
|
---|
[6268] | 450 | } catch (IOException e) {
|
---|
| 451 | Main.warn(e);
|
---|
[4087] | 452 | }
|
---|
| 453 | }
|
---|
[6792] | 454 |
|
---|
[6615] | 455 | /**
|
---|
| 456 | * Converts the given file to its URL.
|
---|
| 457 | * @param f The file to get URL from
|
---|
| 458 | * @return The URL of the given file, or {@code null} if not possible.
|
---|
| 459 | * @since 6615
|
---|
| 460 | */
|
---|
| 461 | public static URL fileToURL(File f) {
|
---|
| 462 | if (f != null) {
|
---|
| 463 | try {
|
---|
| 464 | return f.toURI().toURL();
|
---|
| 465 | } catch (MalformedURLException ex) {
|
---|
| 466 | Main.error("Unable to convert filename " + f.getAbsolutePath() + " to URL");
|
---|
| 467 | }
|
---|
| 468 | }
|
---|
| 469 | return null;
|
---|
| 470 | }
|
---|
[4087] | 471 |
|
---|
[6889] | 472 | private static final double EPSILON = 1e-11;
|
---|
[4272] | 473 |
|
---|
[6268] | 474 | /**
|
---|
| 475 | * Determines if the two given double values are equal (their delta being smaller than a fixed epsilon)
|
---|
| 476 | * @param a The first double value to compare
|
---|
| 477 | * @param b The second double value to compare
|
---|
| 478 | * @return {@code true} if {@code abs(a - b) <= 1e-11}, {@code false} otherwise
|
---|
| 479 | */
|
---|
[4272] | 480 | public static boolean equalsEpsilon(double a, double b) {
|
---|
[6268] | 481 | return Math.abs(a - b) <= EPSILON;
|
---|
[4272] | 482 | }
|
---|
[4380] | 483 |
|
---|
| 484 | /**
|
---|
| 485 | * Copies the string {@code s} to system clipboard.
|
---|
| 486 | * @param s string to be copied to clipboard.
|
---|
| 487 | * @return true if succeeded, false otherwise.
|
---|
| 488 | */
|
---|
| 489 | public static boolean copyToClipboard(String s) {
|
---|
| 490 | try {
|
---|
| 491 | Toolkit.getDefaultToolkit().getSystemClipboard().setContents(new StringSelection(s), new ClipboardOwner() {
|
---|
| 492 |
|
---|
| 493 | @Override
|
---|
| 494 | public void lostOwnership(Clipboard clpbrd, Transferable t) {
|
---|
| 495 | }
|
---|
| 496 | });
|
---|
| 497 | return true;
|
---|
| 498 | } catch (IllegalStateException ex) {
|
---|
[6642] | 499 | Main.error(ex);
|
---|
[4380] | 500 | return false;
|
---|
| 501 | }
|
---|
| 502 | }
|
---|
| 503 |
|
---|
| 504 | /**
|
---|
| 505 | * Extracts clipboard content as string.
|
---|
| 506 | * @return string clipboard contents if available, {@code null} otherwise.
|
---|
| 507 | */
|
---|
| 508 | public static String getClipboardContent() {
|
---|
[5221] | 509 | Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
|
---|
| 510 | Transferable t = null;
|
---|
| 511 | for (int tries = 0; t == null && tries < 10; tries++) {
|
---|
| 512 | try {
|
---|
| 513 | t = clipboard.getContents(null);
|
---|
[6070] | 514 | } catch (IllegalStateException e) {
|
---|
[5221] | 515 | // Clipboard currently unavailable. On some platforms, the system clipboard is unavailable while it is accessed by another application.
|
---|
| 516 | try {
|
---|
| 517 | Thread.sleep(1);
|
---|
| 518 | } catch (InterruptedException ex) {
|
---|
[6313] | 519 | Main.warn("InterruptedException in "+Utils.class.getSimpleName()+" while getting clipboard content");
|
---|
[5221] | 520 | }
|
---|
| 521 | }
|
---|
| 522 | }
|
---|
[4380] | 523 | try {
|
---|
| 524 | if (t != null && t.isDataFlavorSupported(DataFlavor.stringFlavor)) {
|
---|
[6792] | 525 | return (String) t.getTransferData(DataFlavor.stringFlavor);
|
---|
[4380] | 526 | }
|
---|
[7004] | 527 | } catch (UnsupportedFlavorException | IOException ex) {
|
---|
[6642] | 528 | Main.error(ex);
|
---|
[4380] | 529 | return null;
|
---|
| 530 | }
|
---|
| 531 | return null;
|
---|
| 532 | }
|
---|
[4403] | 533 |
|
---|
| 534 | /**
|
---|
| 535 | * Calculate MD5 hash of a string and output in hexadecimal format.
|
---|
[5589] | 536 | * @param data arbitrary String
|
---|
| 537 | * @return MD5 hash of data, string of length 32 with characters in range [0-9a-f]
|
---|
[4403] | 538 | */
|
---|
| 539 | public static String md5Hex(String data) {
|
---|
[7082] | 540 | byte[] byteData = data.getBytes(StandardCharsets.UTF_8);
|
---|
[4403] | 541 | MessageDigest md = null;
|
---|
| 542 | try {
|
---|
| 543 | md = MessageDigest.getInstance("MD5");
|
---|
| 544 | } catch (NoSuchAlgorithmException e) {
|
---|
[6798] | 545 | throw new RuntimeException(e);
|
---|
[4403] | 546 | }
|
---|
| 547 | byte[] byteDigest = md.digest(byteData);
|
---|
| 548 | return toHexString(byteDigest);
|
---|
| 549 | }
|
---|
| 550 |
|
---|
[6175] | 551 | private static final char[] HEX_ARRAY = {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
|
---|
| 552 |
|
---|
[4403] | 553 | /**
|
---|
[5589] | 554 | * Converts a byte array to a string of hexadecimal characters.
|
---|
| 555 | * Preserves leading zeros, so the size of the output string is always twice
|
---|
| 556 | * the number of input bytes.
|
---|
| 557 | * @param bytes the byte array
|
---|
| 558 | * @return hexadecimal representation
|
---|
[4403] | 559 | */
|
---|
| 560 | public static String toHexString(byte[] bytes) {
|
---|
[6175] | 561 |
|
---|
| 562 | if (bytes == null) {
|
---|
| 563 | return "";
|
---|
[4403] | 564 | }
|
---|
[6175] | 565 |
|
---|
| 566 | final int len = bytes.length;
|
---|
| 567 | if (len == 0) {
|
---|
| 568 | return "";
|
---|
| 569 | }
|
---|
| 570 |
|
---|
| 571 | char[] hexChars = new char[len * 2];
|
---|
| 572 | for (int i = 0, j = 0; i < len; i++) {
|
---|
| 573 | final int v = bytes[i];
|
---|
| 574 | hexChars[j++] = HEX_ARRAY[(v & 0xf0) >> 4];
|
---|
| 575 | hexChars[j++] = HEX_ARRAY[v & 0xf];
|
---|
| 576 | }
|
---|
[4403] | 577 | return new String(hexChars);
|
---|
| 578 | }
|
---|
[4668] | 579 |
|
---|
| 580 | /**
|
---|
| 581 | * Topological sort.
|
---|
| 582 | *
|
---|
[6830] | 583 | * @param dependencies contains mappings (key -> value). In the final list of sorted objects, the key will come
|
---|
[4668] | 584 | * after the value. (In other words, the key depends on the value(s).)
|
---|
| 585 | * There must not be cyclic dependencies.
|
---|
| 586 | * @return the list of sorted objects
|
---|
| 587 | */
|
---|
| 588 | public static <T> List<T> topologicalSort(final MultiMap<T,T> dependencies) {
|
---|
[7005] | 589 | MultiMap<T,T> deps = new MultiMap<>();
|
---|
[4668] | 590 | for (T key : dependencies.keySet()) {
|
---|
| 591 | deps.putVoid(key);
|
---|
| 592 | for (T val : dependencies.get(key)) {
|
---|
| 593 | deps.putVoid(val);
|
---|
| 594 | deps.put(key, val);
|
---|
| 595 | }
|
---|
| 596 | }
|
---|
| 597 |
|
---|
| 598 | int size = deps.size();
|
---|
[7005] | 599 | List<T> sorted = new ArrayList<>();
|
---|
[4668] | 600 | for (int i=0; i<size; ++i) {
|
---|
| 601 | T parentless = null;
|
---|
| 602 | for (T key : deps.keySet()) {
|
---|
[6093] | 603 | if (deps.get(key).isEmpty()) {
|
---|
[4668] | 604 | parentless = key;
|
---|
| 605 | break;
|
---|
| 606 | }
|
---|
| 607 | }
|
---|
| 608 | if (parentless == null) throw new RuntimeException();
|
---|
| 609 | sorted.add(parentless);
|
---|
| 610 | deps.remove(parentless);
|
---|
| 611 | for (T key : deps.keySet()) {
|
---|
| 612 | deps.remove(key, parentless);
|
---|
| 613 | }
|
---|
| 614 | }
|
---|
| 615 | if (sorted.size() != size) throw new RuntimeException();
|
---|
| 616 | return sorted;
|
---|
| 617 | }
|
---|
[4816] | 618 |
|
---|
| 619 | /**
|
---|
| 620 | * Represents a function that can be applied to objects of {@code A} and
|
---|
| 621 | * returns objects of {@code B}.
|
---|
| 622 | * @param <A> class of input objects
|
---|
| 623 | * @param <B> class of transformed objects
|
---|
| 624 | */
|
---|
| 625 | public static interface Function<A, B> {
|
---|
| 626 |
|
---|
| 627 | /**
|
---|
| 628 | * Applies the function on {@code x}.
|
---|
| 629 | * @param x an object of
|
---|
| 630 | * @return the transformed object
|
---|
| 631 | */
|
---|
| 632 | B apply(A x);
|
---|
| 633 | }
|
---|
| 634 |
|
---|
| 635 | /**
|
---|
| 636 | * Transforms the collection {@code c} into an unmodifiable collection and
|
---|
[6823] | 637 | * applies the {@link org.openstreetmap.josm.tools.Utils.Function} {@code f} on each element upon access.
|
---|
[4816] | 638 | * @param <A> class of input collection
|
---|
| 639 | * @param <B> class of transformed collection
|
---|
| 640 | * @param c a collection
|
---|
| 641 | * @param f a function that transforms objects of {@code A} to objects of {@code B}
|
---|
| 642 | * @return the transformed unmodifiable collection
|
---|
| 643 | */
|
---|
[5132] | 644 | public static <A, B> Collection<B> transform(final Collection<? extends A> c, final Function<A, B> f) {
|
---|
[5578] | 645 | return new AbstractCollection<B>() {
|
---|
[4816] | 646 |
|
---|
| 647 | @Override
|
---|
| 648 | public int size() {
|
---|
| 649 | return c.size();
|
---|
| 650 | }
|
---|
| 651 |
|
---|
| 652 | @Override
|
---|
| 653 | public Iterator<B> iterator() {
|
---|
| 654 | return new Iterator<B>() {
|
---|
| 655 |
|
---|
[5132] | 656 | private Iterator<? extends A> it = c.iterator();
|
---|
[4816] | 657 |
|
---|
| 658 | @Override
|
---|
| 659 | public boolean hasNext() {
|
---|
| 660 | return it.hasNext();
|
---|
| 661 | }
|
---|
| 662 |
|
---|
| 663 | @Override
|
---|
| 664 | public B next() {
|
---|
| 665 | return f.apply(it.next());
|
---|
| 666 | }
|
---|
| 667 |
|
---|
| 668 | @Override
|
---|
| 669 | public void remove() {
|
---|
| 670 | throw new UnsupportedOperationException();
|
---|
| 671 | }
|
---|
| 672 | };
|
---|
| 673 | }
|
---|
[5578] | 674 | };
|
---|
| 675 | }
|
---|
[4816] | 676 |
|
---|
[5578] | 677 | /**
|
---|
| 678 | * Transforms the list {@code l} into an unmodifiable list and
|
---|
[6823] | 679 | * applies the {@link org.openstreetmap.josm.tools.Utils.Function} {@code f} on each element upon access.
|
---|
[5578] | 680 | * @param <A> class of input collection
|
---|
| 681 | * @param <B> class of transformed collection
|
---|
| 682 | * @param l a collection
|
---|
| 683 | * @param f a function that transforms objects of {@code A} to objects of {@code B}
|
---|
| 684 | * @return the transformed unmodifiable list
|
---|
| 685 | */
|
---|
| 686 | public static <A, B> List<B> transform(final List<? extends A> l, final Function<A, B> f) {
|
---|
| 687 | return new AbstractList<B>() {
|
---|
[4816] | 688 |
|
---|
| 689 | @Override
|
---|
[5578] | 690 | public int size() {
|
---|
| 691 | return l.size();
|
---|
[4816] | 692 | }
|
---|
| 693 |
|
---|
| 694 | @Override
|
---|
[5578] | 695 | public B get(int index) {
|
---|
| 696 | return f.apply(l.get(index));
|
---|
[4816] | 697 | }
|
---|
| 698 | };
|
---|
| 699 | }
|
---|
[5577] | 700 |
|
---|
[6823] | 701 | private static final Pattern HTTP_PREFFIX_PATTERN = Pattern.compile("https?");
|
---|
| 702 |
|
---|
[5577] | 703 | /**
|
---|
[5587] | 704 | * Opens a HTTP connection to the given URL and sets the User-Agent property to JOSM's one.
|
---|
| 705 | * @param httpURL The HTTP url to open (must use http:// or https://)
|
---|
| 706 | * @return An open HTTP connection to the given URL
|
---|
[6823] | 707 | * @throws java.io.IOException if an I/O exception occurs.
|
---|
[5587] | 708 | * @since 5587
|
---|
| 709 | */
|
---|
| 710 | public static HttpURLConnection openHttpConnection(URL httpURL) throws IOException {
|
---|
[6823] | 711 | if (httpURL == null || !HTTP_PREFFIX_PATTERN.matcher(httpURL.getProtocol()).matches()) {
|
---|
[5587] | 712 | throw new IllegalArgumentException("Invalid HTTP url");
|
---|
| 713 | }
|
---|
[7473] | 714 | if (Main.isDebugEnabled()) {
|
---|
| 715 | Main.debug("Opening HTTP connection to "+httpURL.toExternalForm());
|
---|
| 716 | }
|
---|
[5587] | 717 | HttpURLConnection connection = (HttpURLConnection) httpURL.openConnection();
|
---|
[5868] | 718 | connection.setRequestProperty("User-Agent", Version.getInstance().getFullAgentString());
|
---|
[6123] | 719 | connection.setUseCaches(false);
|
---|
[5587] | 720 | return connection;
|
---|
| 721 | }
|
---|
[6070] | 722 |
|
---|
[5587] | 723 | /**
|
---|
[5868] | 724 | * Opens a connection to the given URL and sets the User-Agent property to JOSM's one.
|
---|
| 725 | * @param url The url to open
|
---|
| 726 | * @return An stream for the given URL
|
---|
[6823] | 727 | * @throws java.io.IOException if an I/O exception occurs.
|
---|
[5868] | 728 | * @since 5867
|
---|
| 729 | */
|
---|
| 730 | public static InputStream openURL(URL url) throws IOException {
|
---|
[6421] | 731 | return openURLAndDecompress(url, false);
|
---|
[5868] | 732 | }
|
---|
| 733 |
|
---|
[6421] | 734 | /**
|
---|
| 735 | * Opens a connection to the given URL, sets the User-Agent property to JOSM's one, and decompresses stream if necessary.
|
---|
| 736 | * @param url The url to open
|
---|
[7867] | 737 | * @param decompress whether to wrap steam in a {@link GZIPInputStream} or {@link BZip2CompressorInputStream}
|
---|
[6421] | 738 | * if the {@code Content-Type} header is set accordingly.
|
---|
| 739 | * @return An stream for the given URL
|
---|
| 740 | * @throws IOException if an I/O exception occurs.
|
---|
| 741 | * @since 6421
|
---|
| 742 | */
|
---|
| 743 | public static InputStream openURLAndDecompress(final URL url, final boolean decompress) throws IOException {
|
---|
| 744 | final URLConnection connection = setupURLConnection(url.openConnection());
|
---|
[7119] | 745 | final InputStream in = connection.getInputStream();
|
---|
| 746 | if (decompress) {
|
---|
| 747 | switch (connection.getHeaderField("Content-Type")) {
|
---|
| 748 | case "application/zip":
|
---|
| 749 | return getZipInputStream(in);
|
---|
| 750 | case "application/x-gzip":
|
---|
| 751 | return getGZipInputStream(in);
|
---|
| 752 | case "application/x-bzip2":
|
---|
| 753 | return getBZip2InputStream(in);
|
---|
| 754 | }
|
---|
[6421] | 755 | }
|
---|
[7119] | 756 | return in;
|
---|
[6421] | 757 | }
|
---|
| 758 |
|
---|
[7119] | 759 | /**
|
---|
| 760 | * Returns a Bzip2 input stream wrapping given input stream.
|
---|
| 761 | * @param in The raw input stream
|
---|
| 762 | * @return a Bzip2 input stream wrapping given input stream, or {@code null} if {@code in} is {@code null}
|
---|
| 763 | * @throws IOException if the given input stream does not contain valid BZ2 header
|
---|
[7867] | 764 | * @since 7867
|
---|
[7119] | 765 | */
|
---|
[7867] | 766 | public static BZip2CompressorInputStream getBZip2InputStream(InputStream in) throws IOException {
|
---|
[7119] | 767 | if (in == null) {
|
---|
| 768 | return null;
|
---|
| 769 | }
|
---|
[7869] | 770 | return new BZip2CompressorInputStream(in, /* see #9537 */ true);
|
---|
[7119] | 771 | }
|
---|
| 772 |
|
---|
| 773 | /**
|
---|
| 774 | * Returns a Gzip input stream wrapping given input stream.
|
---|
| 775 | * @param in The raw input stream
|
---|
| 776 | * @return a Gzip input stream wrapping given input stream, or {@code null} if {@code in} is {@code null}
|
---|
| 777 | * @throws IOException if an I/O error has occurred
|
---|
| 778 | * @since 7119
|
---|
| 779 | */
|
---|
| 780 | public static GZIPInputStream getGZipInputStream(InputStream in) throws IOException {
|
---|
| 781 | if (in == null) {
|
---|
| 782 | return null;
|
---|
| 783 | }
|
---|
| 784 | return new GZIPInputStream(in);
|
---|
| 785 | }
|
---|
| 786 |
|
---|
| 787 | /**
|
---|
| 788 | * Returns a Zip input stream wrapping given input stream.
|
---|
| 789 | * @param in The raw input stream
|
---|
| 790 | * @return a Zip input stream wrapping given input stream, or {@code null} if {@code in} is {@code null}
|
---|
| 791 | * @throws IOException if an I/O error has occurred
|
---|
| 792 | * @since 7119
|
---|
| 793 | */
|
---|
| 794 | public static ZipInputStream getZipInputStream(InputStream in) throws IOException {
|
---|
| 795 | if (in == null) {
|
---|
| 796 | return null;
|
---|
| 797 | }
|
---|
| 798 | ZipInputStream zis = new ZipInputStream(in, StandardCharsets.UTF_8);
|
---|
| 799 | // Positions the stream at the beginning of first entry
|
---|
| 800 | ZipEntry ze = zis.getNextEntry();
|
---|
| 801 | if (ze != null && Main.isDebugEnabled()) {
|
---|
| 802 | Main.debug("Zip entry: "+ze.getName());
|
---|
| 803 | }
|
---|
| 804 | return zis;
|
---|
| 805 | }
|
---|
| 806 |
|
---|
[5887] | 807 | /***
|
---|
| 808 | * Setups the given URL connection to match JOSM needs by setting its User-Agent and timeout properties.
|
---|
| 809 | * @param connection The connection to setup
|
---|
| 810 | * @return {@code connection}, with updated properties
|
---|
| 811 | * @since 5887
|
---|
| 812 | */
|
---|
| 813 | public static URLConnection setupURLConnection(URLConnection connection) {
|
---|
| 814 | if (connection != null) {
|
---|
| 815 | connection.setRequestProperty("User-Agent", Version.getInstance().getFullAgentString());
|
---|
| 816 | connection.setConnectTimeout(Main.pref.getInteger("socket.timeout.connect",15)*1000);
|
---|
| 817 | connection.setReadTimeout(Main.pref.getInteger("socket.timeout.read",30)*1000);
|
---|
| 818 | }
|
---|
| 819 | return connection;
|
---|
| 820 | }
|
---|
| 821 |
|
---|
[5868] | 822 | /**
|
---|
| 823 | * Opens a connection to the given URL and sets the User-Agent property to JOSM's one.
|
---|
| 824 | * @param url The url to open
|
---|
| 825 | * @return An buffered stream reader for the given URL (using UTF-8)
|
---|
[6823] | 826 | * @throws java.io.IOException if an I/O exception occurs.
|
---|
[5881] | 827 | * @since 5868
|
---|
[5868] | 828 | */
|
---|
| 829 | public static BufferedReader openURLReader(URL url) throws IOException {
|
---|
[6421] | 830 | return openURLReaderAndDecompress(url, false);
|
---|
[5868] | 831 | }
|
---|
| 832 |
|
---|
| 833 | /**
|
---|
[6421] | 834 | * Opens a connection to the given URL and sets the User-Agent property to JOSM's one.
|
---|
| 835 | * @param url The url to open
|
---|
[7867] | 836 | * @param decompress whether to wrap steam in a {@link GZIPInputStream} or {@link BZip2CompressorInputStream}
|
---|
[6421] | 837 | * if the {@code Content-Type} header is set accordingly.
|
---|
| 838 | * @return An buffered stream reader for the given URL (using UTF-8)
|
---|
| 839 | * @throws IOException if an I/O exception occurs.
|
---|
| 840 | * @since 6421
|
---|
| 841 | */
|
---|
| 842 | public static BufferedReader openURLReaderAndDecompress(final URL url, final boolean decompress) throws IOException {
|
---|
[7082] | 843 | return new BufferedReader(new InputStreamReader(openURLAndDecompress(url, decompress), StandardCharsets.UTF_8));
|
---|
[6421] | 844 | }
|
---|
| 845 |
|
---|
| 846 | /**
|
---|
[5587] | 847 | * Opens a HTTP connection to the given URL, sets the User-Agent property to JOSM's one and optionnaly disables Keep-Alive.
|
---|
| 848 | * @param httpURL The HTTP url to open (must use http:// or https://)
|
---|
[6421] | 849 | * @param keepAlive whether not to set header {@code Connection=close}
|
---|
[5587] | 850 | * @return An open HTTP connection to the given URL
|
---|
[6823] | 851 | * @throws java.io.IOException if an I/O exception occurs.
|
---|
[5587] | 852 | * @since 5587
|
---|
| 853 | */
|
---|
| 854 | public static HttpURLConnection openHttpConnection(URL httpURL, boolean keepAlive) throws IOException {
|
---|
| 855 | HttpURLConnection connection = openHttpConnection(httpURL);
|
---|
| 856 | if (!keepAlive) {
|
---|
| 857 | connection.setRequestProperty("Connection", "close");
|
---|
| 858 | }
|
---|
[6852] | 859 | if (Main.isDebugEnabled()) {
|
---|
| 860 | try {
|
---|
| 861 | Main.debug("REQUEST: "+ connection.getRequestProperties());
|
---|
| 862 | } catch (IllegalStateException e) {
|
---|
| 863 | Main.warn(e);
|
---|
| 864 | }
|
---|
| 865 | }
|
---|
[5587] | 866 | return connection;
|
---|
| 867 | }
|
---|
[6070] | 868 |
|
---|
[5772] | 869 | /**
|
---|
| 870 | * An alternative to {@link String#trim()} to effectively remove all leading and trailing white characters, including Unicode ones.
|
---|
| 871 | * @see <a href="http://closingbraces.net/2008/11/11/javastringtrim/">Java’s String.trim has a strange idea of whitespace</a>
|
---|
[6617] | 872 | * @see <a href="https://bugs.openjdk.java.net/browse/JDK-4080617">JDK bug 4080617</a>
|
---|
[5772] | 873 | * @param str The string to strip
|
---|
[6070] | 874 | * @return <code>str</code>, without leading and trailing characters, according to
|
---|
[5772] | 875 | * {@link Character#isWhitespace(char)} and {@link Character#isSpaceChar(char)}.
|
---|
| 876 | * @since 5772
|
---|
| 877 | */
|
---|
| 878 | public static String strip(String str) {
|
---|
| 879 | if (str == null || str.isEmpty()) {
|
---|
| 880 | return str;
|
---|
| 881 | }
|
---|
| 882 | int start = 0, end = str.length();
|
---|
| 883 | boolean leadingWhite = true;
|
---|
| 884 | while (leadingWhite && start < end) {
|
---|
| 885 | char c = str.charAt(start);
|
---|
[6094] | 886 | // '\u200B' (ZERO WIDTH SPACE character) needs to be handled manually because of change in Unicode 6.0 (Java 7, see #8918)
|
---|
[6410] | 887 | // same for '\uFEFF' (ZERO WIDTH NO-BREAK SPACE)
|
---|
| 888 | leadingWhite = (Character.isWhitespace(c) || Character.isSpaceChar(c) || c == '\u200B' || c == '\uFEFF');
|
---|
[5791] | 889 | if (leadingWhite) {
|
---|
[5772] | 890 | start++;
|
---|
| 891 | }
|
---|
| 892 | }
|
---|
| 893 | boolean trailingWhite = true;
|
---|
| 894 | while (trailingWhite && end > start+1) {
|
---|
| 895 | char c = str.charAt(end-1);
|
---|
[6410] | 896 | trailingWhite = (Character.isWhitespace(c) || Character.isSpaceChar(c) || c == '\u200B' || c == '\uFEFF');
|
---|
[5791] | 897 | if (trailingWhite) {
|
---|
[5772] | 898 | end--;
|
---|
| 899 | }
|
---|
| 900 | }
|
---|
| 901 | return str.substring(start, end);
|
---|
| 902 | }
|
---|
[6103] | 903 |
|
---|
| 904 | /**
|
---|
| 905 | * Runs an external command and returns the standard output.
|
---|
[6792] | 906 | *
|
---|
[6103] | 907 | * The program is expected to execute fast.
|
---|
[6792] | 908 | *
|
---|
[6103] | 909 | * @param command the command with arguments
|
---|
| 910 | * @return the output
|
---|
| 911 | * @throws IOException when there was an error, e.g. command does not exist
|
---|
| 912 | */
|
---|
| 913 | public static String execOutput(List<String> command) throws IOException {
|
---|
[6962] | 914 | if (Main.isDebugEnabled()) {
|
---|
| 915 | Main.debug(join(" ", command));
|
---|
| 916 | }
|
---|
[6103] | 917 | Process p = new ProcessBuilder(command).start();
|
---|
[7082] | 918 | try (BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream(), StandardCharsets.UTF_8))) {
|
---|
[7037] | 919 | StringBuilder all = null;
|
---|
| 920 | String line;
|
---|
| 921 | while ((line = input.readLine()) != null) {
|
---|
| 922 | if (all == null) {
|
---|
| 923 | all = new StringBuilder(line);
|
---|
| 924 | } else {
|
---|
| 925 | all.append("\n");
|
---|
| 926 | all.append(line);
|
---|
| 927 | }
|
---|
[6103] | 928 | }
|
---|
[7037] | 929 | return all != null ? all.toString() : null;
|
---|
[6103] | 930 | }
|
---|
| 931 | }
|
---|
[6245] | 932 |
|
---|
| 933 | /**
|
---|
| 934 | * Returns the JOSM temp directory.
|
---|
| 935 | * @return The JOSM temp directory ({@code <java.io.tmpdir>/JOSM}), or {@code null} if {@code java.io.tmpdir} is not defined
|
---|
| 936 | * @since 6245
|
---|
| 937 | */
|
---|
| 938 | public static File getJosmTempDir() {
|
---|
| 939 | String tmpDir = System.getProperty("java.io.tmpdir");
|
---|
| 940 | if (tmpDir == null) {
|
---|
| 941 | return null;
|
---|
| 942 | }
|
---|
| 943 | File josmTmpDir = new File(tmpDir, "JOSM");
|
---|
[6883] | 944 | if (!josmTmpDir.exists() && !josmTmpDir.mkdirs()) {
|
---|
| 945 | Main.warn("Unable to create temp directory "+josmTmpDir);
|
---|
[6245] | 946 | }
|
---|
| 947 | return josmTmpDir;
|
---|
| 948 | }
|
---|
[6354] | 949 |
|
---|
| 950 | /**
|
---|
| 951 | * Returns a simple human readable (hours, minutes, seconds) string for a given duration in milliseconds.
|
---|
| 952 | * @param elapsedTime The duration in milliseconds
|
---|
[6661] | 953 | * @return A human readable string for the given duration
|
---|
[6830] | 954 | * @throws IllegalArgumentException if elapsedTime is < 0
|
---|
[6354] | 955 | * @since 6354
|
---|
| 956 | */
|
---|
[7867] | 957 | public static String getDurationString(long elapsedTime) {
|
---|
[6354] | 958 | if (elapsedTime < 0) {
|
---|
[7321] | 959 | throw new IllegalArgumentException("elapsedTime must be >= 0");
|
---|
[6354] | 960 | }
|
---|
| 961 | // Is it less than 1 second ?
|
---|
[6661] | 962 | if (elapsedTime < MILLIS_OF_SECOND) {
|
---|
[6354] | 963 | return String.format("%d %s", elapsedTime, tr("ms"));
|
---|
| 964 | }
|
---|
| 965 | // Is it less than 1 minute ?
|
---|
[6661] | 966 | if (elapsedTime < MILLIS_OF_MINUTE) {
|
---|
| 967 | return String.format("%.1f %s", elapsedTime / (float) MILLIS_OF_SECOND, tr("s"));
|
---|
[6354] | 968 | }
|
---|
| 969 | // Is it less than 1 hour ?
|
---|
[6661] | 970 | if (elapsedTime < MILLIS_OF_HOUR) {
|
---|
| 971 | final long min = elapsedTime / MILLIS_OF_MINUTE;
|
---|
| 972 | return String.format("%d %s %d %s", min, tr("min"), (elapsedTime - min * MILLIS_OF_MINUTE) / MILLIS_OF_SECOND, tr("s"));
|
---|
[6354] | 973 | }
|
---|
| 974 | // Is it less than 1 day ?
|
---|
[6661] | 975 | if (elapsedTime < MILLIS_OF_DAY) {
|
---|
| 976 | final long hour = elapsedTime / MILLIS_OF_HOUR;
|
---|
| 977 | return String.format("%d %s %d %s", hour, tr("h"), (elapsedTime - hour * MILLIS_OF_HOUR) / MILLIS_OF_MINUTE, tr("min"));
|
---|
[6354] | 978 | }
|
---|
[6661] | 979 | long days = elapsedTime / MILLIS_OF_DAY;
|
---|
| 980 | return String.format("%d %s %d %s", days, trn("day", "days", days), (elapsedTime - days * MILLIS_OF_DAY) / MILLIS_OF_HOUR, tr("h"));
|
---|
[6354] | 981 | }
|
---|
[6538] | 982 |
|
---|
| 983 | /**
|
---|
[6652] | 984 | * Returns a human readable representation of a list of positions.
|
---|
[6830] | 985 | * <p>
|
---|
[6652] | 986 | * For instance, {@code [1,5,2,6,7} yields "1-2,5-7
|
---|
| 987 | * @param positionList a list of positions
|
---|
| 988 | * @return a human readable representation
|
---|
| 989 | */
|
---|
| 990 | public static String getPositionListString(List<Integer> positionList) {
|
---|
| 991 | Collections.sort(positionList);
|
---|
| 992 | final StringBuilder sb = new StringBuilder(32);
|
---|
| 993 | sb.append(positionList.get(0));
|
---|
| 994 | int cnt = 0;
|
---|
| 995 | int last = positionList.get(0);
|
---|
| 996 | for (int i = 1; i < positionList.size(); ++i) {
|
---|
| 997 | int cur = positionList.get(i);
|
---|
| 998 | if (cur == last + 1) {
|
---|
| 999 | ++cnt;
|
---|
| 1000 | } else if (cnt == 0) {
|
---|
| 1001 | sb.append(",").append(cur);
|
---|
| 1002 | } else {
|
---|
| 1003 | sb.append("-").append(last);
|
---|
| 1004 | sb.append(",").append(cur);
|
---|
| 1005 | cnt = 0;
|
---|
| 1006 | }
|
---|
| 1007 | last = cur;
|
---|
| 1008 | }
|
---|
| 1009 | if (cnt >= 1) {
|
---|
| 1010 | sb.append("-").append(last);
|
---|
| 1011 | }
|
---|
| 1012 | return sb.toString();
|
---|
| 1013 | }
|
---|
| 1014 |
|
---|
| 1015 |
|
---|
| 1016 | /**
|
---|
[6538] | 1017 | * Returns a list of capture groups if {@link Matcher#matches()}, or {@code null}.
|
---|
| 1018 | * The first element (index 0) is the complete match.
|
---|
| 1019 | * Further elements correspond to the parts in parentheses of the regular expression.
|
---|
| 1020 | * @param m the matcher
|
---|
| 1021 | * @return a list of capture groups if {@link Matcher#matches()}, or {@code null}.
|
---|
| 1022 | */
|
---|
| 1023 | public static List<String> getMatches(final Matcher m) {
|
---|
| 1024 | if (m.matches()) {
|
---|
[7005] | 1025 | List<String> result = new ArrayList<>(m.groupCount() + 1);
|
---|
[6538] | 1026 | for (int i = 0; i <= m.groupCount(); i++) {
|
---|
| 1027 | result.add(m.group(i));
|
---|
| 1028 | }
|
---|
| 1029 | return result;
|
---|
| 1030 | } else {
|
---|
| 1031 | return null;
|
---|
| 1032 | }
|
---|
| 1033 | }
|
---|
[6578] | 1034 |
|
---|
| 1035 | /**
|
---|
| 1036 | * Cast an object savely.
|
---|
| 1037 | * @param <T> the target type
|
---|
| 1038 | * @param o the object to cast
|
---|
| 1039 | * @param klass the target class (same as T)
|
---|
| 1040 | * @return null if <code>o</code> is null or the type <code>o</code> is not
|
---|
| 1041 | * a subclass of <code>klass</code>. The casted value otherwise.
|
---|
| 1042 | */
|
---|
[6623] | 1043 | @SuppressWarnings("unchecked")
|
---|
[6578] | 1044 | public static <T> T cast(Object o, Class<T> klass) {
|
---|
| 1045 | if (klass.isInstance(o)) {
|
---|
[6623] | 1046 | return (T) o;
|
---|
[6578] | 1047 | }
|
---|
| 1048 | return null;
|
---|
| 1049 | }
|
---|
| 1050 |
|
---|
[6642] | 1051 | /**
|
---|
| 1052 | * Returns the root cause of a throwable object.
|
---|
| 1053 | * @param t The object to get root cause for
|
---|
| 1054 | * @return the root cause of {@code t}
|
---|
| 1055 | * @since 6639
|
---|
| 1056 | */
|
---|
| 1057 | public static Throwable getRootCause(Throwable t) {
|
---|
| 1058 | Throwable result = t;
|
---|
| 1059 | if (result != null) {
|
---|
| 1060 | Throwable cause = result.getCause();
|
---|
[7867] | 1061 | while (cause != null && !cause.equals(result)) {
|
---|
[6642] | 1062 | result = cause;
|
---|
| 1063 | cause = result.getCause();
|
---|
| 1064 | }
|
---|
| 1065 | }
|
---|
| 1066 | return result;
|
---|
| 1067 | }
|
---|
[6792] | 1068 |
|
---|
[6717] | 1069 | /**
|
---|
| 1070 | * Adds the given item at the end of a new copy of given array.
|
---|
| 1071 | * @param array The source array
|
---|
| 1072 | * @param item The item to add
|
---|
| 1073 | * @return An extended copy of {@code array} containing {@code item} as additional last element
|
---|
| 1074 | * @since 6717
|
---|
| 1075 | */
|
---|
| 1076 | public static <T> T[] addInArrayCopy(T[] array, T item) {
|
---|
| 1077 | T[] biggerCopy = Arrays.copyOf(array, array.length + 1);
|
---|
| 1078 | biggerCopy[array.length] = item;
|
---|
| 1079 | return biggerCopy;
|
---|
| 1080 | }
|
---|
[6742] | 1081 |
|
---|
| 1082 | /**
|
---|
| 1083 | * If the string {@code s} is longer than {@code maxLength}, the string is cut and "..." is appended.
|
---|
[7867] | 1084 | * @param s String to shorten
|
---|
| 1085 | * @param maxLength maximum number of characters to keep (not including the "...")
|
---|
| 1086 | * @return the shortened string
|
---|
[6742] | 1087 | */
|
---|
| 1088 | public static String shortenString(String s, int maxLength) {
|
---|
| 1089 | if (s != null && s.length() > maxLength) {
|
---|
| 1090 | return s.substring(0, maxLength - 3) + "...";
|
---|
| 1091 | } else {
|
---|
| 1092 | return s;
|
---|
| 1093 | }
|
---|
| 1094 | }
|
---|
[7019] | 1095 |
|
---|
[6972] | 1096 | /**
|
---|
[7019] | 1097 | * Fixes URL with illegal characters in the query (and fragment) part by
|
---|
[6972] | 1098 | * percent encoding those characters.
|
---|
[7019] | 1099 | *
|
---|
[6972] | 1100 | * special characters like & and # are not encoded
|
---|
[7019] | 1101 | *
|
---|
[6972] | 1102 | * @param url the URL that should be fixed
|
---|
| 1103 | * @return the repaired URL
|
---|
| 1104 | */
|
---|
| 1105 | public static String fixURLQuery(String url) {
|
---|
[7019] | 1106 | if (url.indexOf('?') == -1)
|
---|
[6972] | 1107 | return url;
|
---|
[7019] | 1108 |
|
---|
[6972] | 1109 | String query = url.substring(url.indexOf('?') + 1);
|
---|
[7019] | 1110 |
|
---|
[6972] | 1111 | StringBuilder sb = new StringBuilder(url.substring(0, url.indexOf('?') + 1));
|
---|
[7019] | 1112 |
|
---|
[6972] | 1113 | for (int i=0; i<query.length(); i++) {
|
---|
| 1114 | String c = query.substring(i, i+1);
|
---|
| 1115 | if (URL_CHARS.contains(c)) {
|
---|
| 1116 | sb.append(c);
|
---|
| 1117 | } else {
|
---|
| 1118 | try {
|
---|
| 1119 | sb.append(URLEncoder.encode(c, "UTF-8"));
|
---|
| 1120 | } catch (UnsupportedEncodingException ex) {
|
---|
| 1121 | throw new RuntimeException(ex);
|
---|
| 1122 | }
|
---|
| 1123 | }
|
---|
| 1124 | }
|
---|
| 1125 | return sb.toString();
|
---|
| 1126 | }
|
---|
[7019] | 1127 |
|
---|
[7356] | 1128 | /**
|
---|
| 1129 | * Determines if the given URL denotes a file on a local filesystem.
|
---|
| 1130 | * @param url The URL to test
|
---|
| 1131 | * @return {@code true} if the url points to a local file
|
---|
| 1132 | * @since 7356
|
---|
| 1133 | */
|
---|
| 1134 | public static boolean isLocalUrl(String url) {
|
---|
| 1135 | if (url.startsWith("http://") || url.startsWith("https://") || url.startsWith("resource://"))
|
---|
| 1136 | return false;
|
---|
| 1137 | return true;
|
---|
| 1138 | }
|
---|
[7423] | 1139 |
|
---|
| 1140 | /**
|
---|
| 1141 | * Returns a pair containing the number of threads (n), and a thread pool (if n > 1) to perform
|
---|
| 1142 | * multi-thread computation in the context of the given preference key.
|
---|
| 1143 | * @param pref The preference key
|
---|
| 1144 | * @return a pair containing the number of threads (n), and a thread pool (if n > 1, null otherwise)
|
---|
| 1145 | * @since 7423
|
---|
| 1146 | */
|
---|
| 1147 | public static Pair<Integer, ExecutorService> newThreadPool(String pref) {
|
---|
| 1148 | int noThreads = Main.pref.getInteger(pref, Runtime.getRuntime().availableProcessors());
|
---|
| 1149 | ExecutorService pool = noThreads <= 1 ? null : Executors.newFixedThreadPool(noThreads);
|
---|
| 1150 | return new Pair<>(noThreads, pool);
|
---|
| 1151 | }
|
---|
[7894] | 1152 |
|
---|
| 1153 | /**
|
---|
| 1154 | * Updates a given system property.
|
---|
| 1155 | * @param key The property key
|
---|
| 1156 | * @param value The property value
|
---|
| 1157 | * @return the previous value of the system property, or {@code null} if it did not have one.
|
---|
| 1158 | * @since 7894
|
---|
| 1159 | */
|
---|
| 1160 | public static String updateSystemProperty(String key, String value) {
|
---|
| 1161 | if (value != null) {
|
---|
| 1162 | String old = System.setProperty(key, value);
|
---|
| 1163 | if (!key.toLowerCase().contains("password")) {
|
---|
| 1164 | Main.debug("System property '"+key+"' set to '"+value+"'. Old value was '"+old+"'");
|
---|
| 1165 | } else {
|
---|
| 1166 | Main.debug("System property '"+key+"' changed.");
|
---|
| 1167 | }
|
---|
| 1168 | return old;
|
---|
| 1169 | }
|
---|
| 1170 | return null;
|
---|
| 1171 | }
|
---|
[8287] | 1172 |
|
---|
| 1173 | /**
|
---|
| 1174 | * Returns a new secure SAX parser, supporting XML namespaces.
|
---|
| 1175 | * @return a new secure SAX parser, supporting XML namespaces
|
---|
| 1176 | * @throws ParserConfigurationException if a parser cannot be created which satisfies the requested configuration.
|
---|
| 1177 | * @throws SAXException for SAX errors.
|
---|
| 1178 | * @since 8287
|
---|
| 1179 | */
|
---|
| 1180 | public static SAXParser newSafeSAXParser() throws ParserConfigurationException, SAXException {
|
---|
| 1181 | SAXParserFactory parserFactory = SAXParserFactory.newInstance();
|
---|
| 1182 | parserFactory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
|
---|
| 1183 | parserFactory.setNamespaceAware(true);
|
---|
| 1184 | return parserFactory.newSAXParser();
|
---|
| 1185 | }
|
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[4069] | 1186 | }
|
---|