[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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[8304] | 27 | import java.net.URLDecoder;
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[6972] | 28 | import java.net.URLEncoder;
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[7082] | 29 | import java.nio.charset.StandardCharsets;
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[7003] | 30 | import java.nio.file.Files;
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| 31 | import java.nio.file.Path;
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| 32 | import java.nio.file.StandardCopyOption;
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[4403] | 33 | import java.security.MessageDigest;
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| 34 | import java.security.NoSuchAlgorithmException;
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[4069] | 35 | import java.text.MessageFormat;
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[5578] | 36 | import java.util.AbstractCollection;
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| 37 | import java.util.AbstractList;
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[4668] | 38 | import java.util.ArrayList;
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[6221] | 39 | import java.util.Arrays;
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[3848] | 40 | import java.util.Collection;
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[6652] | 41 | import java.util.Collections;
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[4816] | 42 | import java.util.Iterator;
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[4668] | 43 | import java.util.List;
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[7423] | 44 | import java.util.concurrent.ExecutorService;
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| 45 | import java.util.concurrent.Executors;
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[6538] | 46 | import java.util.regex.Matcher;
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[6823] | 47 | import java.util.regex.Pattern;
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[6421] | 48 | import java.util.zip.GZIPInputStream;
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[7119] | 49 | import java.util.zip.ZipEntry;
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[5874] | 50 | import java.util.zip.ZipFile;
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[7119] | 51 | import java.util.zip.ZipInputStream;
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[3848] | 52 |
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[8287] | 53 | import javax.xml.XMLConstants;
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| 54 | import javax.xml.parsers.ParserConfigurationException;
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| 55 | import javax.xml.parsers.SAXParser;
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| 56 | import javax.xml.parsers.SAXParserFactory;
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| 57 |
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[7867] | 58 | import org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream;
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[5868] | 59 | import org.openstreetmap.josm.Main;
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[5587] | 60 | import org.openstreetmap.josm.data.Version;
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[8347] | 61 | import org.xml.sax.InputSource;
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[8287] | 62 | import org.xml.sax.SAXException;
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[8347] | 63 | import org.xml.sax.helpers.DefaultHandler;
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[5587] | 64 |
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[4069] | 65 | /**
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| 66 | * Basic utils, that can be useful in different parts of the program.
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| 67 | */
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[6362] | 68 | public final class Utils {
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[3504] | 69 |
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[6823] | 70 | public static final Pattern WHITE_SPACES_PATTERN = Pattern.compile("\\s+");
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| 71 |
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[6360] | 72 | private Utils() {
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| 73 | // Hide default constructor for utils classes
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| 74 | }
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| 75 |
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[6806] | 76 | private static final int MILLIS_OF_SECOND = 1000;
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| 77 | private static final int MILLIS_OF_MINUTE = 60000;
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| 78 | private static final int MILLIS_OF_HOUR = 3600000;
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| 79 | private static final int MILLIS_OF_DAY = 86400000;
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| 80 |
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[6999] | 81 | public static final String URL_CHARS = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~:/?#[]@!$&'()*+,;=%";
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| 82 |
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[6772] | 83 | /**
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| 84 | * Tests whether {@code predicate} applies to at least one elements from {@code collection}.
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| 85 | */
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[3836] | 86 | public static <T> boolean exists(Iterable<? extends T> collection, Predicate<? super T> predicate) {
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| 87 | for (T item : collection) {
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| 88 | if (predicate.evaluate(item))
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[3504] | 89 | return true;
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| 90 | }
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| 91 | return false;
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| 92 | }
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[3674] | 93 |
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[6772] | 94 | /**
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| 95 | * Tests whether {@code predicate} applies to all elements from {@code collection}.
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| 96 | */
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| 97 | public static <T> boolean forAll(Iterable<? extends T> collection, Predicate<? super T> predicate) {
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| 98 | return !exists(collection, Predicates.not(predicate));
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| 99 | }
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| 100 |
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[4065] | 101 | public static <T> boolean exists(Iterable<T> collection, Class<? extends T> klass) {
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[3836] | 102 | for (Object item : collection) {
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| 103 | if (klass.isInstance(item))
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| 104 | return true;
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| 105 | }
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| 106 | return false;
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| 107 | }
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| 108 |
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| 109 | public static <T> T find(Iterable<? extends T> collection, Predicate<? super T> predicate) {
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| 110 | for (T item : collection) {
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| 111 | if (predicate.evaluate(item))
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| 112 | return item;
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| 113 | }
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| 114 | return null;
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| 115 | }
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| 116 |
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[4065] | 117 | @SuppressWarnings("unchecked")
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| 118 | public static <T> T find(Iterable<? super T> collection, Class<? extends T> klass) {
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[3836] | 119 | for (Object item : collection) {
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[4065] | 120 | if (klass.isInstance(item))
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| 121 | return (T) item;
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[3836] | 122 | }
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| 123 | return null;
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| 124 | }
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[4408] | 125 |
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[5159] | 126 | public static <T> Collection<T> filter(Collection<? extends T> collection, Predicate<? super T> predicate) {
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[7005] | 127 | return new FilteredCollection<>(collection, predicate);
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[5159] | 128 | }
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[4668] | 129 |
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[6610] | 130 | /**
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| 131 | * Returns the first element from {@code items} which is non-null, or null if all elements are null.
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[7019] | 132 | * @param items the items to look for
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| 133 | * @return first non-null item if there is one
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[6610] | 134 | */
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[7019] | 135 | @SafeVarargs
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[5159] | 136 | public static <T> T firstNonNull(T... items) {
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| 137 | for (T i : items) {
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| 138 | if (i != null) {
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| 139 | return i;
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| 140 | }
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| 141 | }
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| 142 | return null;
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| 143 | }
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| 144 |
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[4100] | 145 | /**
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| 146 | * Filter a collection by (sub)class.
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| 147 | * This is an efficient read-only implementation.
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| 148 | */
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| 149 | public static <S, T extends S> SubclassFilteredCollection<S, T> filteredCollection(Collection<S> collection, final Class<T> klass) {
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[7005] | 150 | return new SubclassFilteredCollection<>(collection, new Predicate<S>() {
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[4100] | 151 | @Override
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| 152 | public boolean evaluate(S o) {
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| 153 | return klass.isInstance(o);
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| 154 | }
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| 155 | });
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| 156 | }
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[3836] | 157 |
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[3869] | 158 | public static <T> int indexOf(Iterable<? extends T> collection, Predicate<? super T> predicate) {
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| 159 | int i = 0;
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| 160 | for (T item : collection) {
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| 161 | if (predicate.evaluate(item))
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| 162 | return i;
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| 163 | i++;
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| 164 | }
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| 165 | return -1;
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| 166 | }
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| 167 |
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[3674] | 168 | /**
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[7867] | 169 | * Returns the minimum of three values.
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| 170 | * @param a an argument.
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| 171 | * @param b another argument.
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| 172 | * @param c another argument.
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| 173 | * @return the smaller of {@code a}, {@code b} and {@code c}.
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[3674] | 174 | */
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| 175 | public static int min(int a, int b, int c) {
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| 176 | if (b < c) {
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| 177 | if (a < b)
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| 178 | return a;
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| 179 | return b;
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| 180 | } else {
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[4065] | 181 | if (a < c)
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[3674] | 182 | return a;
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| 183 | return c;
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| 184 | }
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| 185 | }
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[3711] | 186 |
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[7867] | 187 | /**
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| 188 | * Returns the greater of four {@code int} values. That is, the
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| 189 | * result is the argument closer to the value of
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| 190 | * {@link Integer#MAX_VALUE}. If the arguments have the same value,
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| 191 | * the result is that same value.
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| 192 | *
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| 193 | * @param a an argument.
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| 194 | * @param b another argument.
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| 195 | * @param c another argument.
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| 196 | * @param d another argument.
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| 197 | * @return the larger of {@code a}, {@code b}, {@code c} and {@code d}.
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| 198 | */
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[3836] | 199 | public static int max(int a, int b, int c, int d) {
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| 200 | return Math.max(Math.max(a, b), Math.max(c, d));
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| 201 | }
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| 202 |
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[7867] | 203 | /**
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| 204 | * Ensures a logical condition is met. Otherwise throws an assertion error.
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| 205 | * @param condition the condition to be met
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| 206 | * @param message Formatted error message to raise if condition is not met
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| 207 | * @param data Message parameters, optional
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| 208 | * @throws AssertionError if the condition is not met
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| 209 | */
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[4069] | 210 | public static void ensure(boolean condition, String message, Object...data) {
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| 211 | if (!condition)
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| 212 | throw new AssertionError(
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| 213 | MessageFormat.format(message,data)
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| 214 | );
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| 215 | }
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| 216 |
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[3796] | 217 | /**
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[3711] | 218 | * return the modulus in the range [0, n)
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| 219 | */
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| 220 | public static int mod(int a, int n) {
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| 221 | if (n <= 0)
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[7864] | 222 | throw new IllegalArgumentException("n must be <= 0 but is "+n);
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[3711] | 223 | int res = a % n;
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| 224 | if (res < 0) {
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| 225 | res += n;
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| 226 | }
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| 227 | return res;
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| 228 | }
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| 229 |
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[3848] | 230 | /**
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| 231 | * Joins a list of strings (or objects that can be converted to string via
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| 232 | * Object.toString()) into a single string with fields separated by sep.
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| 233 | * @param sep the separator
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| 234 | * @param values collection of objects, null is converted to the
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| 235 | * empty string
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| 236 | * @return null if values is null. The joined string otherwise.
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| 237 | */
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| 238 | public static String join(String sep, Collection<?> values) {
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[7864] | 239 | CheckParameterUtil.ensureParameterNotNull(sep, "sep");
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[3848] | 240 | if (values == null)
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| 241 | return null;
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| 242 | StringBuilder s = null;
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| 243 | for (Object a : values) {
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| 244 | if (a == null) {
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| 245 | a = "";
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| 246 | }
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[4197] | 247 | if (s != null) {
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[8376] | 248 | s.append(sep).append(a);
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[3848] | 249 | } else {
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| 250 | s = new StringBuilder(a.toString());
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| 251 | }
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| 252 | }
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[7867] | 253 | return s != null ? s.toString() : "";
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[3848] | 254 | }
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[3859] | 255 |
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[6524] | 256 | /**
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| 257 | * Converts the given iterable collection as an unordered HTML list.
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| 258 | * @param values The iterable collection
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| 259 | * @return An unordered HTML list
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| 260 | */
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| 261 | public static String joinAsHtmlUnorderedList(Iterable<?> values) {
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[5132] | 262 | StringBuilder sb = new StringBuilder(1024);
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| 263 | sb.append("<ul>");
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| 264 | for (Object i : values) {
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| 265 | sb.append("<li>").append(i).append("</li>");
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| 266 | }
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| 267 | sb.append("</ul>");
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| 268 | return sb.toString();
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| 269 | }
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| 270 |
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[3859] | 271 | /**
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| 272 | * convert Color to String
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| 273 | * (Color.toString() omits alpha value)
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| 274 | */
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| 275 | public static String toString(Color c) {
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| 276 | if (c == null)
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| 277 | return "null";
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| 278 | if (c.getAlpha() == 255)
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| 279 | return String.format("#%06x", c.getRGB() & 0x00ffffff);
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| 280 | else
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| 281 | return String.format("#%06x(alpha=%d)", c.getRGB() & 0x00ffffff, c.getAlpha());
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| 282 | }
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[3865] | 283 |
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| 284 | /**
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[6830] | 285 | * convert float range 0 <= x <= 1 to integer range 0..255
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[3865] | 286 | * when dealing with colors and color alpha value
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[3879] | 287 | * @return null if val is null, the corresponding int if val is in the
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| 288 | * range 0...1. If val is outside that range, return 255
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[3865] | 289 | */
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| 290 | public static Integer color_float2int(Float val) {
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| 291 | if (val == null)
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| 292 | return null;
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| 293 | if (val < 0 || val > 1)
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| 294 | return 255;
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| 295 | return (int) (255f * val + 0.5f);
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| 296 | }
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| 297 |
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| 298 | /**
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[6830] | 299 | * convert integer range 0..255 to float range 0 <= x <= 1
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[6749] | 300 | * when dealing with colors and color alpha value
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[3865] | 301 | */
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| 302 | public static Float color_int2float(Integer val) {
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| 303 | if (val == null)
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| 304 | return null;
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| 305 | if (val < 0 || val > 255)
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| 306 | return 1f;
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| 307 | return ((float) val) / 255f;
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| 308 | }
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| 309 |
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[4069] | 310 | public static Color complement(Color clr) {
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| 311 | return new Color(255 - clr.getRed(), 255 - clr.getGreen(), 255 - clr.getBlue(), clr.getAlpha());
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| 312 | }
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[4065] | 313 |
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[5874] | 314 | /**
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[6221] | 315 | * Copies the given array. Unlike {@link Arrays#copyOf}, this method is null-safe.
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| 316 | * @param array The array to copy
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| 317 | * @return A copy of the original array, or {@code null} if {@code array} is null
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| 318 | * @since 6221
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| 319 | */
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| 320 | public static <T> T[] copyArray(T[] array) {
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| 321 | if (array != null) {
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| 322 | return Arrays.copyOf(array, array.length);
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| 323 | }
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| 324 | return null;
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| 325 | }
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[6792] | 326 |
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[6221] | 327 | /**
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[6222] | 328 | * Copies the given array. Unlike {@link Arrays#copyOf}, this method is null-safe.
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| 329 | * @param array The array to copy
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| 330 | * @return A copy of the original array, or {@code null} if {@code array} is null
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| 331 | * @since 6222
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| 332 | */
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| 333 | public static char[] copyArray(char[] array) {
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| 334 | if (array != null) {
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| 335 | return Arrays.copyOf(array, array.length);
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| 336 | }
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| 337 | return null;
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| 338 | }
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[6792] | 339 |
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[6222] | 340 | /**
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[7436] | 341 | * Copies the given array. Unlike {@link Arrays#copyOf}, this method is null-safe.
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| 342 | * @param array The array to copy
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| 343 | * @return A copy of the original array, or {@code null} if {@code array} is null
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| 344 | * @since 7436
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| 345 | */
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| 346 | public static int[] copyArray(int[] array) {
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| 347 | if (array != null) {
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| 348 | return Arrays.copyOf(array, array.length);
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| 349 | }
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| 350 | return null;
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| 351 | }
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| 352 |
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| 353 | /**
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[7835] | 354 | * Simple file copy function that will overwrite the target file.
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[5874] | 355 | * @param in The source file
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| 356 | * @param out The destination file
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[7003] | 357 | * @return the path to the target file
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[8291] | 358 | * @throws IOException if any I/O error occurs
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| 359 | * @throws IllegalArgumentException if {@code in} or {@code out} is {@code null}
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[7003] | 360 | * @since 7003
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[5874] | 361 | */
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[7835] | 362 | public static Path copyFile(File in, File out) throws IOException {
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[7003] | 363 | CheckParameterUtil.ensureParameterNotNull(in, "in");
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| 364 | CheckParameterUtil.ensureParameterNotNull(out, "out");
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| 365 | return Files.copy(in.toPath(), out.toPath(), StandardCopyOption.REPLACE_EXISTING);
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[5874] | 366 | }
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[6070] | 367 |
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[7835] | 368 | /**
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| 369 | * Recursive directory copy function
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| 370 | * @param in The source directory
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| 371 | * @param out The destination directory
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[8291] | 372 | * @throws IOException if any I/O error ooccurs
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| 373 | * @throws IllegalArgumentException if {@code in} or {@code out} is {@code null}
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[7835] | 374 | * @since 7835
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| 375 | */
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| 376 | public static void copyDirectory(File in, File out) throws IOException {
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| 377 | CheckParameterUtil.ensureParameterNotNull(in, "in");
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| 378 | CheckParameterUtil.ensureParameterNotNull(out, "out");
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| 379 | if (!out.exists() && !out.mkdirs()) {
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| 380 | Main.warn("Unable to create directory "+out.getPath());
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| 381 | }
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[8308] | 382 | File[] files = in.listFiles();
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| 383 | if (files != null) {
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| 384 | for (File f : files) {
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| 385 | File target = new File(out, f.getName());
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| 386 | if (f.isDirectory()) {
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| 387 | copyDirectory(f, target);
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| 388 | } else {
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| 389 | copyFile(f, target);
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| 390 | }
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[7835] | 391 | }
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| 392 | }
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| 393 | }
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| 394 |
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[7867] | 395 | /**
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| 396 | * Copy data from source stream to output stream.
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| 397 | * @param source source stream
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| 398 | * @param destination target stream
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| 399 | * @return number of bytes copied
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| 400 | * @throws IOException if any I/O error occurs
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| 401 | */
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[4065] | 402 | public static int copyStream(InputStream source, OutputStream destination) throws IOException {
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| 403 | int count = 0;
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| 404 | byte[] b = new byte[512];
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| 405 | int read;
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| 406 | while ((read = source.read(b)) != -1) {
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| 407 | count += read;
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| 408 | destination.write(b, 0, read);
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| 409 | }
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| 410 | return count;
|
---|
| 411 | }
|
---|
| 412 |
|
---|
[7835] | 413 | /**
|
---|
| 414 | * Deletes a directory recursively.
|
---|
| 415 | * @param path The directory to delete
|
---|
| 416 | * @return <code>true</code> if and only if the file or directory is
|
---|
| 417 | * successfully deleted; <code>false</code> otherwise
|
---|
| 418 | */
|
---|
[4065] | 419 | public static boolean deleteDirectory(File path) {
|
---|
| 420 | if( path.exists() ) {
|
---|
| 421 | File[] files = path.listFiles();
|
---|
[8308] | 422 | if (files != null) {
|
---|
| 423 | for (File file : files) {
|
---|
| 424 | if (file.isDirectory()) {
|
---|
| 425 | deleteDirectory(file);
|
---|
| 426 | } else if (!file.delete()) {
|
---|
| 427 | Main.warn("Unable to delete file: "+file.getPath());
|
---|
| 428 | }
|
---|
[4065] | 429 | }
|
---|
| 430 | }
|
---|
| 431 | }
|
---|
[7835] | 432 | return path.delete();
|
---|
[4065] | 433 | }
|
---|
[4087] | 434 |
|
---|
| 435 | /**
|
---|
[6823] | 436 | * <p>Utility method for closing a {@link java.io.Closeable} object.</p>
|
---|
[4668] | 437 | *
|
---|
[5874] | 438 | * @param c the closeable object. May be null.
|
---|
[4087] | 439 | */
|
---|
[5874] | 440 | public static void close(Closeable c) {
|
---|
| 441 | if (c == null) return;
|
---|
[4087] | 442 | try {
|
---|
[5874] | 443 | c.close();
|
---|
[6268] | 444 | } catch (IOException e) {
|
---|
| 445 | Main.warn(e);
|
---|
[4087] | 446 | }
|
---|
| 447 | }
|
---|
[6070] | 448 |
|
---|
[4087] | 449 | /**
|
---|
[6823] | 450 | * <p>Utility method for closing a {@link java.util.zip.ZipFile}.</p>
|
---|
[4668] | 451 | *
|
---|
[5874] | 452 | * @param zip the zip file. May be null.
|
---|
[4087] | 453 | */
|
---|
[5874] | 454 | public static void close(ZipFile zip) {
|
---|
| 455 | if (zip == null) return;
|
---|
[4087] | 456 | try {
|
---|
[5874] | 457 | zip.close();
|
---|
[6268] | 458 | } catch (IOException e) {
|
---|
| 459 | Main.warn(e);
|
---|
[4087] | 460 | }
|
---|
| 461 | }
|
---|
[6792] | 462 |
|
---|
[6615] | 463 | /**
|
---|
| 464 | * Converts the given file to its URL.
|
---|
| 465 | * @param f The file to get URL from
|
---|
| 466 | * @return The URL of the given file, or {@code null} if not possible.
|
---|
| 467 | * @since 6615
|
---|
| 468 | */
|
---|
| 469 | public static URL fileToURL(File f) {
|
---|
| 470 | if (f != null) {
|
---|
| 471 | try {
|
---|
| 472 | return f.toURI().toURL();
|
---|
| 473 | } catch (MalformedURLException ex) {
|
---|
| 474 | Main.error("Unable to convert filename " + f.getAbsolutePath() + " to URL");
|
---|
| 475 | }
|
---|
| 476 | }
|
---|
| 477 | return null;
|
---|
| 478 | }
|
---|
[4087] | 479 |
|
---|
[6889] | 480 | private static final double EPSILON = 1e-11;
|
---|
[4272] | 481 |
|
---|
[6268] | 482 | /**
|
---|
| 483 | * Determines if the two given double values are equal (their delta being smaller than a fixed epsilon)
|
---|
| 484 | * @param a The first double value to compare
|
---|
| 485 | * @param b The second double value to compare
|
---|
| 486 | * @return {@code true} if {@code abs(a - b) <= 1e-11}, {@code false} otherwise
|
---|
| 487 | */
|
---|
[4272] | 488 | public static boolean equalsEpsilon(double a, double b) {
|
---|
[6268] | 489 | return Math.abs(a - b) <= EPSILON;
|
---|
[4272] | 490 | }
|
---|
[4380] | 491 |
|
---|
| 492 | /**
|
---|
| 493 | * Copies the string {@code s} to system clipboard.
|
---|
| 494 | * @param s string to be copied to clipboard.
|
---|
| 495 | * @return true if succeeded, false otherwise.
|
---|
| 496 | */
|
---|
| 497 | public static boolean copyToClipboard(String s) {
|
---|
| 498 | try {
|
---|
| 499 | Toolkit.getDefaultToolkit().getSystemClipboard().setContents(new StringSelection(s), new ClipboardOwner() {
|
---|
| 500 |
|
---|
| 501 | @Override
|
---|
| 502 | public void lostOwnership(Clipboard clpbrd, Transferable t) {
|
---|
| 503 | }
|
---|
| 504 | });
|
---|
| 505 | return true;
|
---|
| 506 | } catch (IllegalStateException ex) {
|
---|
[6642] | 507 | Main.error(ex);
|
---|
[4380] | 508 | return false;
|
---|
| 509 | }
|
---|
| 510 | }
|
---|
| 511 |
|
---|
| 512 | /**
|
---|
| 513 | * Extracts clipboard content as string.
|
---|
| 514 | * @return string clipboard contents if available, {@code null} otherwise.
|
---|
| 515 | */
|
---|
| 516 | public static String getClipboardContent() {
|
---|
[5221] | 517 | Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
|
---|
| 518 | Transferable t = null;
|
---|
| 519 | for (int tries = 0; t == null && tries < 10; tries++) {
|
---|
| 520 | try {
|
---|
| 521 | t = clipboard.getContents(null);
|
---|
[6070] | 522 | } catch (IllegalStateException e) {
|
---|
[5221] | 523 | // Clipboard currently unavailable. On some platforms, the system clipboard is unavailable while it is accessed by another application.
|
---|
| 524 | try {
|
---|
| 525 | Thread.sleep(1);
|
---|
| 526 | } catch (InterruptedException ex) {
|
---|
[6313] | 527 | Main.warn("InterruptedException in "+Utils.class.getSimpleName()+" while getting clipboard content");
|
---|
[5221] | 528 | }
|
---|
| 529 | }
|
---|
| 530 | }
|
---|
[4380] | 531 | try {
|
---|
| 532 | if (t != null && t.isDataFlavorSupported(DataFlavor.stringFlavor)) {
|
---|
[6792] | 533 | return (String) t.getTransferData(DataFlavor.stringFlavor);
|
---|
[4380] | 534 | }
|
---|
[7004] | 535 | } catch (UnsupportedFlavorException | IOException ex) {
|
---|
[6642] | 536 | Main.error(ex);
|
---|
[4380] | 537 | return null;
|
---|
| 538 | }
|
---|
| 539 | return null;
|
---|
| 540 | }
|
---|
[4403] | 541 |
|
---|
| 542 | /**
|
---|
| 543 | * Calculate MD5 hash of a string and output in hexadecimal format.
|
---|
[5589] | 544 | * @param data arbitrary String
|
---|
| 545 | * @return MD5 hash of data, string of length 32 with characters in range [0-9a-f]
|
---|
[4403] | 546 | */
|
---|
| 547 | public static String md5Hex(String data) {
|
---|
[7082] | 548 | byte[] byteData = data.getBytes(StandardCharsets.UTF_8);
|
---|
[4403] | 549 | MessageDigest md = null;
|
---|
| 550 | try {
|
---|
| 551 | md = MessageDigest.getInstance("MD5");
|
---|
| 552 | } catch (NoSuchAlgorithmException e) {
|
---|
[6798] | 553 | throw new RuntimeException(e);
|
---|
[4403] | 554 | }
|
---|
| 555 | byte[] byteDigest = md.digest(byteData);
|
---|
| 556 | return toHexString(byteDigest);
|
---|
| 557 | }
|
---|
| 558 |
|
---|
[6175] | 559 | private static final char[] HEX_ARRAY = {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
|
---|
| 560 |
|
---|
[4403] | 561 | /**
|
---|
[5589] | 562 | * Converts a byte array to a string of hexadecimal characters.
|
---|
| 563 | * Preserves leading zeros, so the size of the output string is always twice
|
---|
| 564 | * the number of input bytes.
|
---|
| 565 | * @param bytes the byte array
|
---|
| 566 | * @return hexadecimal representation
|
---|
[4403] | 567 | */
|
---|
| 568 | public static String toHexString(byte[] bytes) {
|
---|
[6175] | 569 |
|
---|
| 570 | if (bytes == null) {
|
---|
| 571 | return "";
|
---|
[4403] | 572 | }
|
---|
[6175] | 573 |
|
---|
| 574 | final int len = bytes.length;
|
---|
| 575 | if (len == 0) {
|
---|
| 576 | return "";
|
---|
| 577 | }
|
---|
| 578 |
|
---|
| 579 | char[] hexChars = new char[len * 2];
|
---|
| 580 | for (int i = 0, j = 0; i < len; i++) {
|
---|
| 581 | final int v = bytes[i];
|
---|
| 582 | hexChars[j++] = HEX_ARRAY[(v & 0xf0) >> 4];
|
---|
| 583 | hexChars[j++] = HEX_ARRAY[v & 0xf];
|
---|
| 584 | }
|
---|
[4403] | 585 | return new String(hexChars);
|
---|
| 586 | }
|
---|
[4668] | 587 |
|
---|
| 588 | /**
|
---|
| 589 | * Topological sort.
|
---|
| 590 | *
|
---|
[6830] | 591 | * @param dependencies contains mappings (key -> value). In the final list of sorted objects, the key will come
|
---|
[4668] | 592 | * after the value. (In other words, the key depends on the value(s).)
|
---|
| 593 | * There must not be cyclic dependencies.
|
---|
| 594 | * @return the list of sorted objects
|
---|
| 595 | */
|
---|
| 596 | public static <T> List<T> topologicalSort(final MultiMap<T,T> dependencies) {
|
---|
[7005] | 597 | MultiMap<T,T> deps = new MultiMap<>();
|
---|
[4668] | 598 | for (T key : dependencies.keySet()) {
|
---|
| 599 | deps.putVoid(key);
|
---|
| 600 | for (T val : dependencies.get(key)) {
|
---|
| 601 | deps.putVoid(val);
|
---|
| 602 | deps.put(key, val);
|
---|
| 603 | }
|
---|
| 604 | }
|
---|
| 605 |
|
---|
| 606 | int size = deps.size();
|
---|
[7005] | 607 | List<T> sorted = new ArrayList<>();
|
---|
[4668] | 608 | for (int i=0; i<size; ++i) {
|
---|
| 609 | T parentless = null;
|
---|
| 610 | for (T key : deps.keySet()) {
|
---|
[6093] | 611 | if (deps.get(key).isEmpty()) {
|
---|
[4668] | 612 | parentless = key;
|
---|
| 613 | break;
|
---|
| 614 | }
|
---|
| 615 | }
|
---|
| 616 | if (parentless == null) throw new RuntimeException();
|
---|
| 617 | sorted.add(parentless);
|
---|
| 618 | deps.remove(parentless);
|
---|
| 619 | for (T key : deps.keySet()) {
|
---|
| 620 | deps.remove(key, parentless);
|
---|
| 621 | }
|
---|
| 622 | }
|
---|
| 623 | if (sorted.size() != size) throw new RuntimeException();
|
---|
| 624 | return sorted;
|
---|
| 625 | }
|
---|
[4816] | 626 |
|
---|
| 627 | /**
|
---|
| 628 | * Represents a function that can be applied to objects of {@code A} and
|
---|
| 629 | * returns objects of {@code B}.
|
---|
| 630 | * @param <A> class of input objects
|
---|
| 631 | * @param <B> class of transformed objects
|
---|
| 632 | */
|
---|
| 633 | public static interface Function<A, B> {
|
---|
| 634 |
|
---|
| 635 | /**
|
---|
| 636 | * Applies the function on {@code x}.
|
---|
| 637 | * @param x an object of
|
---|
| 638 | * @return the transformed object
|
---|
| 639 | */
|
---|
| 640 | B apply(A x);
|
---|
| 641 | }
|
---|
| 642 |
|
---|
| 643 | /**
|
---|
| 644 | * Transforms the collection {@code c} into an unmodifiable collection and
|
---|
[6823] | 645 | * applies the {@link org.openstreetmap.josm.tools.Utils.Function} {@code f} on each element upon access.
|
---|
[4816] | 646 | * @param <A> class of input collection
|
---|
| 647 | * @param <B> class of transformed collection
|
---|
| 648 | * @param c a collection
|
---|
| 649 | * @param f a function that transforms objects of {@code A} to objects of {@code B}
|
---|
| 650 | * @return the transformed unmodifiable collection
|
---|
| 651 | */
|
---|
[5132] | 652 | public static <A, B> Collection<B> transform(final Collection<? extends A> c, final Function<A, B> f) {
|
---|
[5578] | 653 | return new AbstractCollection<B>() {
|
---|
[4816] | 654 |
|
---|
| 655 | @Override
|
---|
| 656 | public int size() {
|
---|
| 657 | return c.size();
|
---|
| 658 | }
|
---|
| 659 |
|
---|
| 660 | @Override
|
---|
| 661 | public Iterator<B> iterator() {
|
---|
| 662 | return new Iterator<B>() {
|
---|
| 663 |
|
---|
[5132] | 664 | private Iterator<? extends A> it = c.iterator();
|
---|
[4816] | 665 |
|
---|
| 666 | @Override
|
---|
| 667 | public boolean hasNext() {
|
---|
| 668 | return it.hasNext();
|
---|
| 669 | }
|
---|
| 670 |
|
---|
| 671 | @Override
|
---|
| 672 | public B next() {
|
---|
| 673 | return f.apply(it.next());
|
---|
| 674 | }
|
---|
| 675 |
|
---|
| 676 | @Override
|
---|
| 677 | public void remove() {
|
---|
| 678 | throw new UnsupportedOperationException();
|
---|
| 679 | }
|
---|
| 680 | };
|
---|
| 681 | }
|
---|
[5578] | 682 | };
|
---|
| 683 | }
|
---|
[4816] | 684 |
|
---|
[5578] | 685 | /**
|
---|
| 686 | * Transforms the list {@code l} into an unmodifiable list and
|
---|
[6823] | 687 | * applies the {@link org.openstreetmap.josm.tools.Utils.Function} {@code f} on each element upon access.
|
---|
[5578] | 688 | * @param <A> class of input collection
|
---|
| 689 | * @param <B> class of transformed collection
|
---|
| 690 | * @param l a collection
|
---|
| 691 | * @param f a function that transforms objects of {@code A} to objects of {@code B}
|
---|
| 692 | * @return the transformed unmodifiable list
|
---|
| 693 | */
|
---|
| 694 | public static <A, B> List<B> transform(final List<? extends A> l, final Function<A, B> f) {
|
---|
| 695 | return new AbstractList<B>() {
|
---|
[4816] | 696 |
|
---|
| 697 | @Override
|
---|
[5578] | 698 | public int size() {
|
---|
| 699 | return l.size();
|
---|
[4816] | 700 | }
|
---|
| 701 |
|
---|
| 702 | @Override
|
---|
[5578] | 703 | public B get(int index) {
|
---|
| 704 | return f.apply(l.get(index));
|
---|
[4816] | 705 | }
|
---|
| 706 | };
|
---|
| 707 | }
|
---|
[5577] | 708 |
|
---|
[6823] | 709 | private static final Pattern HTTP_PREFFIX_PATTERN = Pattern.compile("https?");
|
---|
| 710 |
|
---|
[5577] | 711 | /**
|
---|
[5587] | 712 | * Opens a HTTP connection to the given URL and sets the User-Agent property to JOSM's one.
|
---|
| 713 | * @param httpURL The HTTP url to open (must use http:// or https://)
|
---|
| 714 | * @return An open HTTP connection to the given URL
|
---|
[6823] | 715 | * @throws java.io.IOException if an I/O exception occurs.
|
---|
[5587] | 716 | * @since 5587
|
---|
| 717 | */
|
---|
| 718 | public static HttpURLConnection openHttpConnection(URL httpURL) throws IOException {
|
---|
[6823] | 719 | if (httpURL == null || !HTTP_PREFFIX_PATTERN.matcher(httpURL.getProtocol()).matches()) {
|
---|
[5587] | 720 | throw new IllegalArgumentException("Invalid HTTP url");
|
---|
| 721 | }
|
---|
[7473] | 722 | if (Main.isDebugEnabled()) {
|
---|
| 723 | Main.debug("Opening HTTP connection to "+httpURL.toExternalForm());
|
---|
| 724 | }
|
---|
[5587] | 725 | HttpURLConnection connection = (HttpURLConnection) httpURL.openConnection();
|
---|
[5868] | 726 | connection.setRequestProperty("User-Agent", Version.getInstance().getFullAgentString());
|
---|
[6123] | 727 | connection.setUseCaches(false);
|
---|
[5587] | 728 | return connection;
|
---|
| 729 | }
|
---|
[6070] | 730 |
|
---|
[5587] | 731 | /**
|
---|
[5868] | 732 | * Opens a connection to the given URL and sets the User-Agent property to JOSM's one.
|
---|
| 733 | * @param url The url to open
|
---|
| 734 | * @return An stream for the given URL
|
---|
[6823] | 735 | * @throws java.io.IOException if an I/O exception occurs.
|
---|
[5868] | 736 | * @since 5867
|
---|
| 737 | */
|
---|
| 738 | public static InputStream openURL(URL url) throws IOException {
|
---|
[6421] | 739 | return openURLAndDecompress(url, false);
|
---|
[5868] | 740 | }
|
---|
| 741 |
|
---|
[6421] | 742 | /**
|
---|
| 743 | * Opens a connection to the given URL, sets the User-Agent property to JOSM's one, and decompresses stream if necessary.
|
---|
| 744 | * @param url The url to open
|
---|
[7867] | 745 | * @param decompress whether to wrap steam in a {@link GZIPInputStream} or {@link BZip2CompressorInputStream}
|
---|
[6421] | 746 | * if the {@code Content-Type} header is set accordingly.
|
---|
| 747 | * @return An stream for the given URL
|
---|
| 748 | * @throws IOException if an I/O exception occurs.
|
---|
| 749 | * @since 6421
|
---|
| 750 | */
|
---|
| 751 | public static InputStream openURLAndDecompress(final URL url, final boolean decompress) throws IOException {
|
---|
| 752 | final URLConnection connection = setupURLConnection(url.openConnection());
|
---|
[7119] | 753 | final InputStream in = connection.getInputStream();
|
---|
| 754 | if (decompress) {
|
---|
| 755 | switch (connection.getHeaderField("Content-Type")) {
|
---|
| 756 | case "application/zip":
|
---|
| 757 | return getZipInputStream(in);
|
---|
| 758 | case "application/x-gzip":
|
---|
| 759 | return getGZipInputStream(in);
|
---|
| 760 | case "application/x-bzip2":
|
---|
| 761 | return getBZip2InputStream(in);
|
---|
| 762 | }
|
---|
[6421] | 763 | }
|
---|
[7119] | 764 | return in;
|
---|
[6421] | 765 | }
|
---|
| 766 |
|
---|
[7119] | 767 | /**
|
---|
| 768 | * Returns a Bzip2 input stream wrapping given input stream.
|
---|
| 769 | * @param in The raw input stream
|
---|
| 770 | * @return a Bzip2 input stream wrapping given input stream, or {@code null} if {@code in} is {@code null}
|
---|
| 771 | * @throws IOException if the given input stream does not contain valid BZ2 header
|
---|
[7867] | 772 | * @since 7867
|
---|
[7119] | 773 | */
|
---|
[7867] | 774 | public static BZip2CompressorInputStream getBZip2InputStream(InputStream in) throws IOException {
|
---|
[7119] | 775 | if (in == null) {
|
---|
| 776 | return null;
|
---|
| 777 | }
|
---|
[7869] | 778 | return new BZip2CompressorInputStream(in, /* see #9537 */ true);
|
---|
[7119] | 779 | }
|
---|
| 780 |
|
---|
| 781 | /**
|
---|
| 782 | * Returns a Gzip input stream wrapping given input stream.
|
---|
| 783 | * @param in The raw input stream
|
---|
| 784 | * @return a Gzip input stream wrapping given input stream, or {@code null} if {@code in} is {@code null}
|
---|
| 785 | * @throws IOException if an I/O error has occurred
|
---|
| 786 | * @since 7119
|
---|
| 787 | */
|
---|
| 788 | public static GZIPInputStream getGZipInputStream(InputStream in) throws IOException {
|
---|
| 789 | if (in == null) {
|
---|
| 790 | return null;
|
---|
| 791 | }
|
---|
| 792 | return new GZIPInputStream(in);
|
---|
| 793 | }
|
---|
| 794 |
|
---|
| 795 | /**
|
---|
| 796 | * Returns a Zip input stream wrapping given input stream.
|
---|
| 797 | * @param in The raw input stream
|
---|
| 798 | * @return a Zip input stream wrapping given input stream, or {@code null} if {@code in} is {@code null}
|
---|
| 799 | * @throws IOException if an I/O error has occurred
|
---|
| 800 | * @since 7119
|
---|
| 801 | */
|
---|
| 802 | public static ZipInputStream getZipInputStream(InputStream in) throws IOException {
|
---|
| 803 | if (in == null) {
|
---|
| 804 | return null;
|
---|
| 805 | }
|
---|
| 806 | ZipInputStream zis = new ZipInputStream(in, StandardCharsets.UTF_8);
|
---|
| 807 | // Positions the stream at the beginning of first entry
|
---|
| 808 | ZipEntry ze = zis.getNextEntry();
|
---|
| 809 | if (ze != null && Main.isDebugEnabled()) {
|
---|
| 810 | Main.debug("Zip entry: "+ze.getName());
|
---|
| 811 | }
|
---|
| 812 | return zis;
|
---|
| 813 | }
|
---|
| 814 |
|
---|
[5887] | 815 | /***
|
---|
| 816 | * Setups the given URL connection to match JOSM needs by setting its User-Agent and timeout properties.
|
---|
| 817 | * @param connection The connection to setup
|
---|
| 818 | * @return {@code connection}, with updated properties
|
---|
| 819 | * @since 5887
|
---|
| 820 | */
|
---|
| 821 | public static URLConnection setupURLConnection(URLConnection connection) {
|
---|
| 822 | if (connection != null) {
|
---|
| 823 | connection.setRequestProperty("User-Agent", Version.getInstance().getFullAgentString());
|
---|
| 824 | connection.setConnectTimeout(Main.pref.getInteger("socket.timeout.connect",15)*1000);
|
---|
| 825 | connection.setReadTimeout(Main.pref.getInteger("socket.timeout.read",30)*1000);
|
---|
| 826 | }
|
---|
| 827 | return connection;
|
---|
| 828 | }
|
---|
| 829 |
|
---|
[5868] | 830 | /**
|
---|
| 831 | * Opens a connection to the given URL and sets the User-Agent property to JOSM's one.
|
---|
| 832 | * @param url The url to open
|
---|
| 833 | * @return An buffered stream reader for the given URL (using UTF-8)
|
---|
[6823] | 834 | * @throws java.io.IOException if an I/O exception occurs.
|
---|
[5881] | 835 | * @since 5868
|
---|
[5868] | 836 | */
|
---|
| 837 | public static BufferedReader openURLReader(URL url) throws IOException {
|
---|
[6421] | 838 | return openURLReaderAndDecompress(url, false);
|
---|
[5868] | 839 | }
|
---|
| 840 |
|
---|
| 841 | /**
|
---|
[6421] | 842 | * Opens a connection to the given URL and sets the User-Agent property to JOSM's one.
|
---|
| 843 | * @param url The url to open
|
---|
[7867] | 844 | * @param decompress whether to wrap steam in a {@link GZIPInputStream} or {@link BZip2CompressorInputStream}
|
---|
[6421] | 845 | * if the {@code Content-Type} header is set accordingly.
|
---|
| 846 | * @return An buffered stream reader for the given URL (using UTF-8)
|
---|
| 847 | * @throws IOException if an I/O exception occurs.
|
---|
| 848 | * @since 6421
|
---|
| 849 | */
|
---|
| 850 | public static BufferedReader openURLReaderAndDecompress(final URL url, final boolean decompress) throws IOException {
|
---|
[7082] | 851 | return new BufferedReader(new InputStreamReader(openURLAndDecompress(url, decompress), StandardCharsets.UTF_8));
|
---|
[6421] | 852 | }
|
---|
| 853 |
|
---|
| 854 | /**
|
---|
[5587] | 855 | * Opens a HTTP connection to the given URL, sets the User-Agent property to JOSM's one and optionnaly disables Keep-Alive.
|
---|
| 856 | * @param httpURL The HTTP url to open (must use http:// or https://)
|
---|
[6421] | 857 | * @param keepAlive whether not to set header {@code Connection=close}
|
---|
[5587] | 858 | * @return An open HTTP connection to the given URL
|
---|
[6823] | 859 | * @throws java.io.IOException if an I/O exception occurs.
|
---|
[5587] | 860 | * @since 5587
|
---|
| 861 | */
|
---|
| 862 | public static HttpURLConnection openHttpConnection(URL httpURL, boolean keepAlive) throws IOException {
|
---|
| 863 | HttpURLConnection connection = openHttpConnection(httpURL);
|
---|
| 864 | if (!keepAlive) {
|
---|
| 865 | connection.setRequestProperty("Connection", "close");
|
---|
| 866 | }
|
---|
[6852] | 867 | if (Main.isDebugEnabled()) {
|
---|
| 868 | try {
|
---|
| 869 | Main.debug("REQUEST: "+ connection.getRequestProperties());
|
---|
| 870 | } catch (IllegalStateException e) {
|
---|
| 871 | Main.warn(e);
|
---|
| 872 | }
|
---|
| 873 | }
|
---|
[5587] | 874 | return connection;
|
---|
| 875 | }
|
---|
[6070] | 876 |
|
---|
[5772] | 877 | /**
|
---|
| 878 | * An alternative to {@link String#trim()} to effectively remove all leading and trailing white characters, including Unicode ones.
|
---|
| 879 | * @see <a href="http://closingbraces.net/2008/11/11/javastringtrim/">Java’s String.trim has a strange idea of whitespace</a>
|
---|
[6617] | 880 | * @see <a href="https://bugs.openjdk.java.net/browse/JDK-4080617">JDK bug 4080617</a>
|
---|
[5772] | 881 | * @param str The string to strip
|
---|
[6070] | 882 | * @return <code>str</code>, without leading and trailing characters, according to
|
---|
[5772] | 883 | * {@link Character#isWhitespace(char)} and {@link Character#isSpaceChar(char)}.
|
---|
| 884 | * @since 5772
|
---|
| 885 | */
|
---|
| 886 | public static String strip(String str) {
|
---|
| 887 | if (str == null || str.isEmpty()) {
|
---|
| 888 | return str;
|
---|
| 889 | }
|
---|
| 890 | int start = 0, end = str.length();
|
---|
| 891 | boolean leadingWhite = true;
|
---|
| 892 | while (leadingWhite && start < end) {
|
---|
| 893 | char c = str.charAt(start);
|
---|
[6094] | 894 | // '\u200B' (ZERO WIDTH SPACE character) needs to be handled manually because of change in Unicode 6.0 (Java 7, see #8918)
|
---|
[6410] | 895 | // same for '\uFEFF' (ZERO WIDTH NO-BREAK SPACE)
|
---|
| 896 | leadingWhite = (Character.isWhitespace(c) || Character.isSpaceChar(c) || c == '\u200B' || c == '\uFEFF');
|
---|
[5791] | 897 | if (leadingWhite) {
|
---|
[5772] | 898 | start++;
|
---|
| 899 | }
|
---|
| 900 | }
|
---|
| 901 | boolean trailingWhite = true;
|
---|
| 902 | while (trailingWhite && end > start+1) {
|
---|
| 903 | char c = str.charAt(end-1);
|
---|
[6410] | 904 | trailingWhite = (Character.isWhitespace(c) || Character.isSpaceChar(c) || c == '\u200B' || c == '\uFEFF');
|
---|
[5791] | 905 | if (trailingWhite) {
|
---|
[5772] | 906 | end--;
|
---|
| 907 | }
|
---|
| 908 | }
|
---|
| 909 | return str.substring(start, end);
|
---|
| 910 | }
|
---|
[6103] | 911 |
|
---|
| 912 | /**
|
---|
| 913 | * Runs an external command and returns the standard output.
|
---|
[6792] | 914 | *
|
---|
[6103] | 915 | * The program is expected to execute fast.
|
---|
[6792] | 916 | *
|
---|
[6103] | 917 | * @param command the command with arguments
|
---|
| 918 | * @return the output
|
---|
| 919 | * @throws IOException when there was an error, e.g. command does not exist
|
---|
| 920 | */
|
---|
| 921 | public static String execOutput(List<String> command) throws IOException {
|
---|
[6962] | 922 | if (Main.isDebugEnabled()) {
|
---|
| 923 | Main.debug(join(" ", command));
|
---|
| 924 | }
|
---|
[6103] | 925 | Process p = new ProcessBuilder(command).start();
|
---|
[7082] | 926 | try (BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream(), StandardCharsets.UTF_8))) {
|
---|
[7037] | 927 | StringBuilder all = null;
|
---|
| 928 | String line;
|
---|
| 929 | while ((line = input.readLine()) != null) {
|
---|
| 930 | if (all == null) {
|
---|
| 931 | all = new StringBuilder(line);
|
---|
| 932 | } else {
|
---|
| 933 | all.append("\n");
|
---|
| 934 | all.append(line);
|
---|
| 935 | }
|
---|
[6103] | 936 | }
|
---|
[7037] | 937 | return all != null ? all.toString() : null;
|
---|
[6103] | 938 | }
|
---|
| 939 | }
|
---|
[6245] | 940 |
|
---|
| 941 | /**
|
---|
| 942 | * Returns the JOSM temp directory.
|
---|
| 943 | * @return The JOSM temp directory ({@code <java.io.tmpdir>/JOSM}), or {@code null} if {@code java.io.tmpdir} is not defined
|
---|
| 944 | * @since 6245
|
---|
| 945 | */
|
---|
| 946 | public static File getJosmTempDir() {
|
---|
| 947 | String tmpDir = System.getProperty("java.io.tmpdir");
|
---|
| 948 | if (tmpDir == null) {
|
---|
| 949 | return null;
|
---|
| 950 | }
|
---|
| 951 | File josmTmpDir = new File(tmpDir, "JOSM");
|
---|
[6883] | 952 | if (!josmTmpDir.exists() && !josmTmpDir.mkdirs()) {
|
---|
| 953 | Main.warn("Unable to create temp directory "+josmTmpDir);
|
---|
[6245] | 954 | }
|
---|
| 955 | return josmTmpDir;
|
---|
| 956 | }
|
---|
[6354] | 957 |
|
---|
| 958 | /**
|
---|
| 959 | * Returns a simple human readable (hours, minutes, seconds) string for a given duration in milliseconds.
|
---|
| 960 | * @param elapsedTime The duration in milliseconds
|
---|
[6661] | 961 | * @return A human readable string for the given duration
|
---|
[6830] | 962 | * @throws IllegalArgumentException if elapsedTime is < 0
|
---|
[6354] | 963 | * @since 6354
|
---|
| 964 | */
|
---|
[7867] | 965 | public static String getDurationString(long elapsedTime) {
|
---|
[6354] | 966 | if (elapsedTime < 0) {
|
---|
[7321] | 967 | throw new IllegalArgumentException("elapsedTime must be >= 0");
|
---|
[6354] | 968 | }
|
---|
| 969 | // Is it less than 1 second ?
|
---|
[6661] | 970 | if (elapsedTime < MILLIS_OF_SECOND) {
|
---|
[6354] | 971 | return String.format("%d %s", elapsedTime, tr("ms"));
|
---|
| 972 | }
|
---|
| 973 | // Is it less than 1 minute ?
|
---|
[6661] | 974 | if (elapsedTime < MILLIS_OF_MINUTE) {
|
---|
[8384] | 975 | return String.format("%.1d %s", elapsedTime / (double) MILLIS_OF_SECOND, tr("s"));
|
---|
[6354] | 976 | }
|
---|
| 977 | // Is it less than 1 hour ?
|
---|
[6661] | 978 | if (elapsedTime < MILLIS_OF_HOUR) {
|
---|
| 979 | final long min = elapsedTime / MILLIS_OF_MINUTE;
|
---|
| 980 | return String.format("%d %s %d %s", min, tr("min"), (elapsedTime - min * MILLIS_OF_MINUTE) / MILLIS_OF_SECOND, tr("s"));
|
---|
[6354] | 981 | }
|
---|
| 982 | // Is it less than 1 day ?
|
---|
[6661] | 983 | if (elapsedTime < MILLIS_OF_DAY) {
|
---|
| 984 | final long hour = elapsedTime / MILLIS_OF_HOUR;
|
---|
| 985 | return String.format("%d %s %d %s", hour, tr("h"), (elapsedTime - hour * MILLIS_OF_HOUR) / MILLIS_OF_MINUTE, tr("min"));
|
---|
[6354] | 986 | }
|
---|
[6661] | 987 | long days = elapsedTime / MILLIS_OF_DAY;
|
---|
| 988 | return String.format("%d %s %d %s", days, trn("day", "days", days), (elapsedTime - days * MILLIS_OF_DAY) / MILLIS_OF_HOUR, tr("h"));
|
---|
[6354] | 989 | }
|
---|
[6538] | 990 |
|
---|
| 991 | /**
|
---|
[6652] | 992 | * Returns a human readable representation of a list of positions.
|
---|
[6830] | 993 | * <p>
|
---|
[6652] | 994 | * For instance, {@code [1,5,2,6,7} yields "1-2,5-7
|
---|
| 995 | * @param positionList a list of positions
|
---|
| 996 | * @return a human readable representation
|
---|
| 997 | */
|
---|
| 998 | public static String getPositionListString(List<Integer> positionList) {
|
---|
| 999 | Collections.sort(positionList);
|
---|
| 1000 | final StringBuilder sb = new StringBuilder(32);
|
---|
| 1001 | sb.append(positionList.get(0));
|
---|
| 1002 | int cnt = 0;
|
---|
| 1003 | int last = positionList.get(0);
|
---|
| 1004 | for (int i = 1; i < positionList.size(); ++i) {
|
---|
| 1005 | int cur = positionList.get(i);
|
---|
| 1006 | if (cur == last + 1) {
|
---|
| 1007 | ++cnt;
|
---|
| 1008 | } else if (cnt == 0) {
|
---|
| 1009 | sb.append(",").append(cur);
|
---|
| 1010 | } else {
|
---|
| 1011 | sb.append("-").append(last);
|
---|
| 1012 | sb.append(",").append(cur);
|
---|
| 1013 | cnt = 0;
|
---|
| 1014 | }
|
---|
| 1015 | last = cur;
|
---|
| 1016 | }
|
---|
| 1017 | if (cnt >= 1) {
|
---|
| 1018 | sb.append("-").append(last);
|
---|
| 1019 | }
|
---|
| 1020 | return sb.toString();
|
---|
| 1021 | }
|
---|
| 1022 |
|
---|
| 1023 |
|
---|
| 1024 | /**
|
---|
[6538] | 1025 | * Returns a list of capture groups if {@link Matcher#matches()}, or {@code null}.
|
---|
| 1026 | * The first element (index 0) is the complete match.
|
---|
| 1027 | * Further elements correspond to the parts in parentheses of the regular expression.
|
---|
| 1028 | * @param m the matcher
|
---|
| 1029 | * @return a list of capture groups if {@link Matcher#matches()}, or {@code null}.
|
---|
| 1030 | */
|
---|
| 1031 | public static List<String> getMatches(final Matcher m) {
|
---|
| 1032 | if (m.matches()) {
|
---|
[7005] | 1033 | List<String> result = new ArrayList<>(m.groupCount() + 1);
|
---|
[6538] | 1034 | for (int i = 0; i <= m.groupCount(); i++) {
|
---|
| 1035 | result.add(m.group(i));
|
---|
| 1036 | }
|
---|
| 1037 | return result;
|
---|
| 1038 | } else {
|
---|
| 1039 | return null;
|
---|
| 1040 | }
|
---|
| 1041 | }
|
---|
[6578] | 1042 |
|
---|
| 1043 | /**
|
---|
| 1044 | * Cast an object savely.
|
---|
| 1045 | * @param <T> the target type
|
---|
| 1046 | * @param o the object to cast
|
---|
| 1047 | * @param klass the target class (same as T)
|
---|
| 1048 | * @return null if <code>o</code> is null or the type <code>o</code> is not
|
---|
| 1049 | * a subclass of <code>klass</code>. The casted value otherwise.
|
---|
| 1050 | */
|
---|
[6623] | 1051 | @SuppressWarnings("unchecked")
|
---|
[6578] | 1052 | public static <T> T cast(Object o, Class<T> klass) {
|
---|
| 1053 | if (klass.isInstance(o)) {
|
---|
[6623] | 1054 | return (T) o;
|
---|
[6578] | 1055 | }
|
---|
| 1056 | return null;
|
---|
| 1057 | }
|
---|
| 1058 |
|
---|
[6642] | 1059 | /**
|
---|
| 1060 | * Returns the root cause of a throwable object.
|
---|
| 1061 | * @param t The object to get root cause for
|
---|
| 1062 | * @return the root cause of {@code t}
|
---|
| 1063 | * @since 6639
|
---|
| 1064 | */
|
---|
| 1065 | public static Throwable getRootCause(Throwable t) {
|
---|
| 1066 | Throwable result = t;
|
---|
| 1067 | if (result != null) {
|
---|
| 1068 | Throwable cause = result.getCause();
|
---|
[7867] | 1069 | while (cause != null && !cause.equals(result)) {
|
---|
[6642] | 1070 | result = cause;
|
---|
| 1071 | cause = result.getCause();
|
---|
| 1072 | }
|
---|
| 1073 | }
|
---|
| 1074 | return result;
|
---|
| 1075 | }
|
---|
[6792] | 1076 |
|
---|
[6717] | 1077 | /**
|
---|
| 1078 | * Adds the given item at the end of a new copy of given array.
|
---|
| 1079 | * @param array The source array
|
---|
| 1080 | * @param item The item to add
|
---|
| 1081 | * @return An extended copy of {@code array} containing {@code item} as additional last element
|
---|
| 1082 | * @since 6717
|
---|
| 1083 | */
|
---|
| 1084 | public static <T> T[] addInArrayCopy(T[] array, T item) {
|
---|
| 1085 | T[] biggerCopy = Arrays.copyOf(array, array.length + 1);
|
---|
| 1086 | biggerCopy[array.length] = item;
|
---|
| 1087 | return biggerCopy;
|
---|
| 1088 | }
|
---|
[6742] | 1089 |
|
---|
| 1090 | /**
|
---|
| 1091 | * If the string {@code s} is longer than {@code maxLength}, the string is cut and "..." is appended.
|
---|
[7867] | 1092 | * @param s String to shorten
|
---|
| 1093 | * @param maxLength maximum number of characters to keep (not including the "...")
|
---|
| 1094 | * @return the shortened string
|
---|
[6742] | 1095 | */
|
---|
| 1096 | public static String shortenString(String s, int maxLength) {
|
---|
| 1097 | if (s != null && s.length() > maxLength) {
|
---|
| 1098 | return s.substring(0, maxLength - 3) + "...";
|
---|
| 1099 | } else {
|
---|
| 1100 | return s;
|
---|
| 1101 | }
|
---|
| 1102 | }
|
---|
[7019] | 1103 |
|
---|
[6972] | 1104 | /**
|
---|
[7019] | 1105 | * Fixes URL with illegal characters in the query (and fragment) part by
|
---|
[6972] | 1106 | * percent encoding those characters.
|
---|
[7019] | 1107 | *
|
---|
[6972] | 1108 | * special characters like & and # are not encoded
|
---|
[7019] | 1109 | *
|
---|
[6972] | 1110 | * @param url the URL that should be fixed
|
---|
| 1111 | * @return the repaired URL
|
---|
| 1112 | */
|
---|
| 1113 | public static String fixURLQuery(String url) {
|
---|
[7019] | 1114 | if (url.indexOf('?') == -1)
|
---|
[6972] | 1115 | return url;
|
---|
[7019] | 1116 |
|
---|
[6972] | 1117 | String query = url.substring(url.indexOf('?') + 1);
|
---|
[7019] | 1118 |
|
---|
[6972] | 1119 | StringBuilder sb = new StringBuilder(url.substring(0, url.indexOf('?') + 1));
|
---|
[7019] | 1120 |
|
---|
[6972] | 1121 | for (int i=0; i<query.length(); i++) {
|
---|
| 1122 | String c = query.substring(i, i+1);
|
---|
| 1123 | if (URL_CHARS.contains(c)) {
|
---|
| 1124 | sb.append(c);
|
---|
| 1125 | } else {
|
---|
[8304] | 1126 | sb.append(encodeUrl(c));
|
---|
[6972] | 1127 | }
|
---|
| 1128 | }
|
---|
| 1129 | return sb.toString();
|
---|
| 1130 | }
|
---|
[7019] | 1131 |
|
---|
[7356] | 1132 | /**
|
---|
[8304] | 1133 | * Translates a string into <code>application/x-www-form-urlencoded</code>
|
---|
| 1134 | * format. This method uses UTF-8 encoding scheme to obtain the bytes for unsafe
|
---|
| 1135 | * characters.
|
---|
| 1136 | *
|
---|
| 1137 | * @param s <code>String</code> to be translated.
|
---|
| 1138 | * @return the translated <code>String</code>.
|
---|
| 1139 | * @see #decodeUrl(String)
|
---|
| 1140 | * @since 8304
|
---|
| 1141 | */
|
---|
| 1142 | public static String encodeUrl(String s) {
|
---|
| 1143 | final String enc = StandardCharsets.UTF_8.name();
|
---|
| 1144 | try {
|
---|
| 1145 | return URLEncoder.encode(s, enc);
|
---|
| 1146 | } catch (UnsupportedEncodingException e) {
|
---|
| 1147 | Main.error(e);
|
---|
| 1148 | return null;
|
---|
| 1149 | }
|
---|
| 1150 | }
|
---|
| 1151 |
|
---|
| 1152 | /**
|
---|
| 1153 | * Decodes a <code>application/x-www-form-urlencoded</code> string.
|
---|
| 1154 | * UTF-8 encoding is used to determine
|
---|
| 1155 | * what characters are represented by any consecutive sequences of the
|
---|
| 1156 | * form "<code>%<i>xy</i></code>".
|
---|
| 1157 | *
|
---|
| 1158 | * @param s the <code>String</code> to decode
|
---|
| 1159 | * @return the newly decoded <code>String</code>
|
---|
| 1160 | * @see #encodeUrl(String)
|
---|
| 1161 | * @since 8304
|
---|
| 1162 | */
|
---|
| 1163 | public static String decodeUrl(String s) {
|
---|
| 1164 | final String enc = StandardCharsets.UTF_8.name();
|
---|
| 1165 | try {
|
---|
| 1166 | return URLDecoder.decode(s, enc);
|
---|
| 1167 | } catch (UnsupportedEncodingException e) {
|
---|
| 1168 | Main.error(e);
|
---|
| 1169 | return null;
|
---|
| 1170 | }
|
---|
| 1171 | }
|
---|
| 1172 |
|
---|
| 1173 | /**
|
---|
[7356] | 1174 | * Determines if the given URL denotes a file on a local filesystem.
|
---|
| 1175 | * @param url The URL to test
|
---|
| 1176 | * @return {@code true} if the url points to a local file
|
---|
| 1177 | * @since 7356
|
---|
| 1178 | */
|
---|
| 1179 | public static boolean isLocalUrl(String url) {
|
---|
| 1180 | if (url.startsWith("http://") || url.startsWith("https://") || url.startsWith("resource://"))
|
---|
| 1181 | return false;
|
---|
| 1182 | return true;
|
---|
| 1183 | }
|
---|
[7423] | 1184 |
|
---|
| 1185 | /**
|
---|
| 1186 | * Returns a pair containing the number of threads (n), and a thread pool (if n > 1) to perform
|
---|
| 1187 | * multi-thread computation in the context of the given preference key.
|
---|
| 1188 | * @param pref The preference key
|
---|
| 1189 | * @return a pair containing the number of threads (n), and a thread pool (if n > 1, null otherwise)
|
---|
| 1190 | * @since 7423
|
---|
| 1191 | */
|
---|
| 1192 | public static Pair<Integer, ExecutorService> newThreadPool(String pref) {
|
---|
| 1193 | int noThreads = Main.pref.getInteger(pref, Runtime.getRuntime().availableProcessors());
|
---|
| 1194 | ExecutorService pool = noThreads <= 1 ? null : Executors.newFixedThreadPool(noThreads);
|
---|
| 1195 | return new Pair<>(noThreads, pool);
|
---|
| 1196 | }
|
---|
[7894] | 1197 |
|
---|
| 1198 | /**
|
---|
| 1199 | * Updates a given system property.
|
---|
| 1200 | * @param key The property key
|
---|
| 1201 | * @param value The property value
|
---|
| 1202 | * @return the previous value of the system property, or {@code null} if it did not have one.
|
---|
| 1203 | * @since 7894
|
---|
| 1204 | */
|
---|
| 1205 | public static String updateSystemProperty(String key, String value) {
|
---|
| 1206 | if (value != null) {
|
---|
| 1207 | String old = System.setProperty(key, value);
|
---|
| 1208 | if (!key.toLowerCase().contains("password")) {
|
---|
| 1209 | Main.debug("System property '"+key+"' set to '"+value+"'. Old value was '"+old+"'");
|
---|
| 1210 | } else {
|
---|
| 1211 | Main.debug("System property '"+key+"' changed.");
|
---|
| 1212 | }
|
---|
| 1213 | return old;
|
---|
| 1214 | }
|
---|
| 1215 | return null;
|
---|
| 1216 | }
|
---|
[8287] | 1217 |
|
---|
| 1218 | /**
|
---|
| 1219 | * Returns a new secure SAX parser, supporting XML namespaces.
|
---|
| 1220 | * @return a new secure SAX parser, supporting XML namespaces
|
---|
| 1221 | * @throws ParserConfigurationException if a parser cannot be created which satisfies the requested configuration.
|
---|
| 1222 | * @throws SAXException for SAX errors.
|
---|
| 1223 | * @since 8287
|
---|
| 1224 | */
|
---|
| 1225 | public static SAXParser newSafeSAXParser() throws ParserConfigurationException, SAXException {
|
---|
| 1226 | SAXParserFactory parserFactory = SAXParserFactory.newInstance();
|
---|
| 1227 | parserFactory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
|
---|
| 1228 | parserFactory.setNamespaceAware(true);
|
---|
| 1229 | return parserFactory.newSAXParser();
|
---|
| 1230 | }
|
---|
[8347] | 1231 |
|
---|
| 1232 | /**
|
---|
| 1233 | * Parse the content given {@link org.xml.sax.InputSource} as XML using the specified {@link org.xml.sax.helpers.DefaultHandler}.
|
---|
| 1234 | * This method uses a secure SAX parser, supporting XML namespaces.
|
---|
| 1235 | *
|
---|
| 1236 | * @param is The InputSource containing the content to be parsed.
|
---|
| 1237 | * @param dh The SAX DefaultHandler to use.
|
---|
| 1238 | * @throws ParserConfigurationException if a parser cannot be created which satisfies the requested configuration.
|
---|
| 1239 | * @throws SAXException for SAX errors.
|
---|
| 1240 | * @throws IOException if any IO errors occur.
|
---|
| 1241 | * @since 8347
|
---|
| 1242 | */
|
---|
| 1243 | public static void parseSafeSAX(InputSource is, DefaultHandler dh) throws ParserConfigurationException, SAXException, IOException {
|
---|
| 1244 | long start = System.currentTimeMillis();
|
---|
| 1245 | if (Main.isDebugEnabled()) {
|
---|
| 1246 | Main.debug("Starting SAX parsing of "+is+" using "+dh);
|
---|
| 1247 | }
|
---|
| 1248 | newSafeSAXParser().parse(is, dh);
|
---|
| 1249 | if (Main.isDebugEnabled()) {
|
---|
| 1250 | Main.debug("SAX parsing done in " + getDurationString(System.currentTimeMillis()-start));
|
---|
| 1251 | }
|
---|
| 1252 | }
|
---|
[4069] | 1253 | }
|
---|