| /* |
| * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved. |
| * |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| // -- This file was mechanically generated: Do not edit! -- // |
| |
| package sun.nio.cs.ext; |
| |
| import java.lang.ref.SoftReference; |
| import java.nio.charset.Charset; |
| import java.nio.charset.spi.CharsetProvider; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| |
| /** |
| * Provider for extended charsets. |
| */ |
| |
| public class ExtendedCharsets extends AbstractCharsetProvider { |
| |
| static volatile ExtendedCharsets instance = null; |
| |
| public ExtendedCharsets() { |
| |
| super("sun.nio.cs.ext"); // identify provider pkg name. |
| |
| _CHARSETS_DEF_LIST_ |
| |
| instance = this; |
| |
| } |
| |
| private boolean initialized = false; |
| |
| // If the sun.nio.cs.map property is defined on the command line we won't |
| // see it in the system-properties table until after the charset subsystem |
| // has been initialized. We therefore delay the effect of this property |
| // until after the JRE has completely booted. |
| // |
| // At the moment following values for this property are supported, property |
| // value string is case insensitive. |
| // |
| // (1)"Windows-31J/Shift_JIS" |
| // In 1.4.1 we added a correct implementation of the Shift_JIS charset |
| // but in previous releases this charset name had been treated as an alias |
| // for Windows-31J, aka MS932. Users who have existing code that depends |
| // upon this alias can restore the previous behavior by defining this |
| // property to have this value. |
| // |
| // (2)"x-windows-50221/ISO-2022-JP" |
| // "x-windows-50220/ISO-2022-JP" |
| // "x-windows-iso2022jp/ISO-2022-JP" |
| // The charset ISO-2022-JP is a "standard based" implementation by default, |
| // which supports ASCII, JIS_X_0201 and JIS_X_0208 mappings based encoding |
| // and decoding only. |
| // There are three Microsoft iso-2022-jp variants, namely x-windows-50220, |
| // x-windows-50221 and x-windows-iso2022jp which behaves "slightly" differently |
| // compared to the "standard based" implementation. See ISO2022_JP.java for |
| // detailed description. Users who prefer the behavior of MS iso-2022-jp |
| // variants should use these names explicitly instead of using "ISO-2022-JP" |
| // and its aliases. However for those who need the ISO-2022-JP charset behaves |
| // exactly the same as MS variants do, above properties can be defined to |
| // switch. |
| // |
| // If we need to define other charset-alias mappings in the future then |
| // this property could be further extended, the general idea being that its |
| // value should be of the form |
| // |
| // new-charset-1/old-charset-1,new-charset-2/old-charset-2,... |
| // |
| // where each charset named to the left of a slash is intended to replace |
| // (most) uses of the charset named to the right of the slash. |
| // |
| protected void init() { |
| if (initialized) |
| return; |
| if (!jdk.internal.misc.VM.isBooted()) |
| return; |
| |
| String map = getProperty("sun.nio.cs.map"); |
| boolean sjisIsMS932 = false; |
| boolean iso2022jpIsMS50221 = false; |
| boolean iso2022jpIsMS50220 = false; |
| boolean iso2022jpIsMSISO2022JP = false; |
| if (map != null) { |
| String[] maps = map.split(","); |
| for (int i = 0; i < maps.length; i++) { |
| if (maps[i].equalsIgnoreCase("Windows-31J/Shift_JIS")) { |
| sjisIsMS932 = true; |
| } else if (maps[i].equalsIgnoreCase("x-windows-50221/ISO-2022-JP")) { |
| iso2022jpIsMS50221 = true; |
| } else if (maps[i].equalsIgnoreCase("x-windows-50220/ISO-2022-JP")) { |
| iso2022jpIsMS50220 = true; |
| } else if (maps[i].equalsIgnoreCase("x-windows-iso2022jp/ISO-2022-JP")) { |
| iso2022jpIsMSISO2022JP = true; |
| } |
| } |
| } |
| if (sjisIsMS932 && hasCharset("Shift_JIS")) { |
| deleteCharset("Shift_JIS", |
| new String[] { |
| // IANA aliases |
| "sjis", // historical |
| "shift_jis", |
| "shift-jis", |
| "ms_kanji", |
| "x-sjis", |
| "csShiftJIS" |
| }); |
| deleteCharset("windows-31j", |
| new String[] { |
| "MS932", // JDK historical |
| "windows-932", |
| "csWindows31J" |
| }); |
| charset("Shift_JIS", "SJIS", |
| new String[] { |
| // IANA aliases |
| "sjis" // JDK historical |
| }); |
| charset("windows-31j", "MS932", |
| new String[] { |
| "MS932", // JDK historical |
| "windows-932", |
| "csWindows31J", |
| "shift-jis", |
| "ms_kanji", |
| "x-sjis", |
| "csShiftJIS", |
| // This alias takes precedence over the actual |
| // Shift_JIS charset itself since aliases are always |
| // resolved first, before looking up canonical names. |
| "shift_jis" |
| }); |
| } |
| if (iso2022jpIsMS50221 || |
| iso2022jpIsMS50220 || |
| iso2022jpIsMSISO2022JP) { |
| deleteCharset("ISO-2022-JP", |
| new String[] { |
| "iso2022jp", |
| "jis", |
| "csISO2022JP", |
| "jis_encoding", |
| "csjisencoding" |
| }); |
| if (iso2022jpIsMS50221) { |
| deleteCharset("x-windows-50221", |
| new String[] { |
| "cp50221", |
| "ms50221" |
| }); |
| charset("x-windows-50221", "MS50221", |
| new String[] { |
| "cp50221", |
| "ms50221", |
| "iso-2022-jp", |
| "iso2022jp", |
| "jis", |
| "csISO2022JP", |
| "jis_encoding", |
| "csjisencoding" |
| }); |
| } else if (iso2022jpIsMS50220) { |
| deleteCharset("x-windows-50220", |
| new String[] { |
| "cp50220", |
| "ms50220" |
| }); |
| charset("x-windows-50220", "MS50220", |
| new String[] { |
| "cp50220", |
| "ms50220", |
| "iso-2022-jp", |
| "iso2022jp", |
| "jis", |
| "csISO2022JP", |
| "jis_encoding", |
| "csjisencoding" |
| }); |
| } else { |
| deleteCharset("x-windows-iso2022jp", |
| new String[] { |
| "windows-iso2022jp" |
| }); |
| charset("x-windows-iso2022jp", "MSISO2022JP", |
| new String[] { |
| "windows-iso2022jp", |
| "iso-2022-jp", |
| "iso2022jp", |
| "jis", |
| "csISO2022JP", |
| "jis_encoding", |
| "csjisencoding" |
| }); |
| |
| |
| } |
| } |
| initialized = true; |
| } |
| |
| private static String getProperty(String key) { |
| // this method may be called during initialization of |
| // system class loader and thus not using lambda |
| return AccessController.doPrivileged( |
| new PrivilegedAction<String>() { |
| @Override |
| public String run() { |
| return System.getProperty(key); |
| } |
| }); |
| } |
| |
| public static String[] aliasesFor(String charsetName) { |
| if (instance == null) |
| return null; |
| return instance.aliases(charsetName); |
| } |
| |
| } |
