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package com.songoda.epicanchors;
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import com.google.common.collect.ImmutableList;
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import com.google.common.collect.ImmutableMap;
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import com.google.common.collect.Lists;
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import org.bukkit.ChatColor;
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import org.bukkit.plugin.java.JavaPlugin;
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import java.io.BufferedReader;
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import java.io.BufferedWriter;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.FileReader;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import java.util.stream.Collectors;
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/**
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* Assists in the creation of multiple localizations and languages,
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* as well as the generation of default .lang files
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*
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* @author Parker Hawke - 2008Choco
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*/
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public class Locale {
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private static final List<Locale> LOCALES = Lists.newArrayList();
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private static final Pattern NODE_PATTERN = Pattern.compile("(\\w+(?:\\.{1}\\w+)*)\\s*=\\s*\"(.*)\"");
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private static final String FILE_EXTENSION = ".lang";
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private static JavaPlugin plugin;
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private static File localeFolder;
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private static String defaultLocale;
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private final Map<String, String> nodes = new HashMap<>();
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private final File file;
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private final String name, region;
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private Locale(String name, String region) {
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if (plugin == null)
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throw new IllegalStateException("Cannot generate locales without first initializing the class (Locale#init(JavaPlugin))");
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this.name = name.toLowerCase();
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this.region = region.toUpperCase();
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String fileName = name + "_" + region + FILE_EXTENSION;
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this.file = new File(localeFolder, fileName);
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if (this.reloadMessages()) return;
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plugin.getLogger().info("Loaded locale " + fileName);
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}
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/**
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* Initialize the locale class to generate information and search for localizations.
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* This must be called before any other methods in the Locale class can be invoked.
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* Note that this will also call {@link #searchForLocales()}, so there is no need to
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* invoke it for yourself after the initialization
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*
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* @param plugin the plugin instance
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*/
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public static void init(JavaPlugin plugin) {
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Locale.plugin = plugin;
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if (localeFolder == null) {
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localeFolder = new File(plugin.getDataFolder(), "locales/");
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}
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localeFolder.mkdirs();
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Locale.searchForLocales();
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}
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/**
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* Find all .lang file locales under the "locales" folder
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*/
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public static void searchForLocales() {
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if (!localeFolder.exists()) localeFolder.mkdirs();
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for (File file : localeFolder.listFiles()) {
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String name = file.getName();
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if (!name.endsWith(".lang")) continue;
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String fileName = name.substring(0, name.lastIndexOf('.'));
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String[] localeValues = fileName.split("_");
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if (localeValues.length != 2) continue;
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if (localeExists(localeValues[0] + "_" + localeValues[1])) continue;
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LOCALES.add(new Locale(localeValues[0], localeValues[1]));
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plugin.getLogger().info("Found and loaded locale \"" + fileName + "\"");
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}
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}
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/**
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* Get a locale by its entire proper name (i.e. "en_US")
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*
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* @param name the full name of the locale
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* @return locale of the specified name
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*/
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public static Locale getLocale(String name) {
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for (Locale locale : LOCALES)
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if (locale.getLanguageTag().equalsIgnoreCase(name)) return locale;
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return null;
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}
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/**
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* Get a locale from the cache by its name (i.e. "en" from "en_US")
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*
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* @param name the name of the language
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* @return locale of the specified language. Null if not cached
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*/
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public static Locale getLocaleByName(String name) {
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for (Locale locale : LOCALES)
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if (locale.getName().equalsIgnoreCase(name)) return locale;
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return null;
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}
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/**
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* Get a locale from the cache by its region (i.e. "US" from "en_US")
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*
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* @param region the name of the region
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* @return locale of the specified region. Null if not cached
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*/
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public static Locale getLocaleByRegion(String region) {
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for (Locale locale : LOCALES)
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if (locale.getRegion().equalsIgnoreCase(region)) return locale;
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return null;
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}
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/**
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* Check whether a locale exists and is registered or not
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*
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* @param name the whole language tag (i.e. "en_US")
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* @return true if it exists
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*/
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public static boolean localeExists(String name) {
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for (Locale locale : LOCALES)
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if (locale.getLanguageTag().equals(name)) return true;
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return false;
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}
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/**
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* Get an immutable list of all currently loaded locales
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*
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* @return list of all locales
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*/
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public static List<Locale> getLocales() {
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return ImmutableList.copyOf(LOCALES);
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}
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/**
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* Save a default locale file from the project source directory, to the locale folder
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*
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* @param in file to save
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* @param fileName the name of the file to save
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* @return true if the operation was successful, false otherwise
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*/
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public static boolean saveDefaultLocale(InputStream in, String fileName) {
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if (!localeFolder.exists()) localeFolder.mkdirs();
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if (!fileName.endsWith(FILE_EXTENSION))
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fileName = (fileName.lastIndexOf(".") == -1 ? fileName : fileName.substring(0, fileName.lastIndexOf('.'))) + FILE_EXTENSION;
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File destinationFile = new File(localeFolder, fileName);
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if (destinationFile.exists()) {
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return compareFiles(plugin.getResource(fileName), destinationFile);
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}
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try (OutputStream outputStream = new FileOutputStream(destinationFile)) {
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copy(in == null ? plugin.getResource(fileName) : in, outputStream);
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fileName = fileName.substring(0, fileName.lastIndexOf('.'));
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String[] localeValues = fileName.split("_");
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if (localeValues.length != 2) return false;
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LOCALES.add(new Locale(localeValues[0], localeValues[1]));
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if (defaultLocale == null) defaultLocale = fileName;
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return true;
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} catch (IOException e) {
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return false;
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}
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}
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/**
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* Save a default locale file from the project source directory, to the locale folder
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*
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* @param fileName the name of the file to save
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* @return true if the operation was successful, false otherwise
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*/
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public static boolean saveDefaultLocale(String fileName) {
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return saveDefaultLocale(null, fileName);
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}
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/**
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* Clear all current locale data
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*/
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public static void clearLocaleData() {
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for (Locale locale : LOCALES)
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locale.nodes.clear();
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LOCALES.clear();
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}
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// Write new changes to existing files, if any at all
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private static boolean compareFiles(InputStream defaultFile, File existingFile) {
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// Look for default
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if (defaultFile == null) {
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defaultFile = plugin.getResource(defaultLocale != null ? defaultLocale : "en_US");
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if (defaultFile == null) return false; // No default at all
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}
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boolean changed = false;
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List<String> defaultLines, existingLines;
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try (BufferedReader defaultReader = new BufferedReader(new InputStreamReader(defaultFile));
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BufferedReader existingReader = new BufferedReader(new FileReader(existingFile));
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BufferedWriter writer = new BufferedWriter(new FileWriter(existingFile, true))) {
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defaultLines = defaultReader.lines().collect(Collectors.toList());
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existingLines = existingReader.lines().map(s -> s.split("\\s*=")[0]).collect(Collectors.toList());
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for (String defaultValue : defaultLines) {
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if (defaultValue.isEmpty() || defaultValue.startsWith("#")) continue;
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String key = defaultValue.split("\\s*=")[0];
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if (!existingLines.contains(key)) {
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if (!changed) {
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writer.newLine();
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writer.newLine();
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writer.write("# New messages for " + plugin.getName() + " v" + plugin.getDescription().getVersion());
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}
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writer.newLine();
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writer.write(defaultValue);
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changed = true;
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}
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}
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} catch (IOException e) {
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return false;
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}
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return changed;
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}
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private static void copy(InputStream input, OutputStream output) {
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int n;
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byte[] buffer = new byte[1024 * 4];
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try {
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while ((n = input.read(buffer)) != -1) {
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output.write(buffer, 0, n);
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}
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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/**
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* Get the name of the language that this locale is based on.
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* (i.e. "en" for English, or "fr" for French)
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*
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* @return the name of the language
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*/
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public String getName() {
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return name;
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}
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/**
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* Get the name of the region that this locale is from.
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* (i.e. "US" for United States or "CA" for Canada)
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*
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* @return the name of the region
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*/
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public String getRegion() {
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return region;
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}
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/**
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* Return the entire locale tag (i.e. "en_US")
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*
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* @return the language tag
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*/
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public String getLanguageTag() {
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return name + "_" + region;
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}
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/**
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* Get the file that represents this locale
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*
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* @return the locale file (.lang)
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*/
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public File getFile() {
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return file;
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}
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/**
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* Get a message set for a specific node
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*
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* @param node the node to get
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* @return the message for the specified node
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*/
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public String getMessage(String node) {
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return ChatColor.translateAlternateColorCodes('&', this.getMessageOrDefault(node, node));
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}
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/**
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* Get a message set for a specific node and replace its params with a supplied arguments.
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*
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* @param node the node to get
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* @param args the replacement arguments
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* @return the message for the specified node
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*/
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public String getMessage(String node, Object... args) {
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String message = getMessage(node);
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for (Object arg : args) {
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message = message.replaceFirst("\\%.*?\\%", arg.toString());
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}
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return message;
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}
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/**
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* Get a message set for a specific node
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*
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* @param node the node to get
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* @param defaultValue the default value given that a value for the node was not found
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* @return the message for the specified node. Default if none found
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*/
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public String getMessageOrDefault(String node, String defaultValue) {
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return this.nodes.getOrDefault(node, defaultValue);
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}
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/**
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* Get the key-value map of nodes to messages
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*
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* @return node-message map
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*/
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public Map<String, String> getMessageNodeMap() {
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return ImmutableMap.copyOf(nodes);
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}
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/**
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* Clear the previous message cache and load new messages directly from file
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*
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* @return reload messages from file
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*/
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public boolean reloadMessages() {
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if (!this.file.exists()) {
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plugin.getLogger().warning("Could not find file for locale " + this.name);
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return false;
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}
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this.nodes.clear(); // Clear previous data (if any)
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try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
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String line;
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for (int lineNumber = 0; (line = reader.readLine()) != null; lineNumber++) {
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if (line.trim().isEmpty() || line.startsWith("#") /* Comment */) continue;
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Matcher matcher = NODE_PATTERN.matcher(line);
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if (!matcher.find()) {
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System.err.println("Invalid locale syntax at (line=" + lineNumber + ")");
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continue;
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}
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nodes.put(matcher.group(1), matcher.group(2));
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}
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} catch (IOException e) {
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e.printStackTrace();
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return false;
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}
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return true;
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}
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}
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