| /* ISO_8859_1.java -- |
| Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| package gnu.java.nio.charset; |
| |
| import java.nio.ByteBuffer; |
| import java.nio.CharBuffer; |
| import java.nio.charset.Charset; |
| import java.nio.charset.CharsetDecoder; |
| import java.nio.charset.CharsetEncoder; |
| import java.nio.charset.CoderResult; |
| |
| /** |
| * ISO-8859-1 charset. |
| * |
| * @author Jesse Rosenstock |
| */ |
| final class ISO_8859_1 extends Charset |
| { |
| ISO_8859_1 () |
| { |
| /* Canonical charset name chosen according to: |
| * http://java.sun.com/j2se/1.5.0/docs/guide/intl/encoding.doc.html |
| */ |
| super ("ISO-8859-1", new String[] { |
| /* These names are provided by |
| * http://www.iana.org/assignments/character-sets |
| */ |
| "iso-ir-100", |
| "ISO_8859-1", |
| "latin1", |
| "l1", |
| "IBM819", |
| "CP819", |
| "csISOLatin1", |
| "8859_1", |
| /* These names are provided by |
| * http://oss.software.ibm.com/cgi-bin/icu/convexp?s=ALL |
| */ |
| "ISO8859_1", "ISO_8859_1", "ibm-819", "ISO_8859-1:1987", |
| "819" |
| }); |
| |
| } |
| |
| public boolean contains (Charset cs) |
| { |
| return cs instanceof US_ASCII || cs instanceof ISO_8859_1; |
| } |
| |
| public CharsetDecoder newDecoder () |
| { |
| return new Decoder (this); |
| } |
| |
| public CharsetEncoder newEncoder () |
| { |
| return new Encoder (this); |
| } |
| |
| private static final class Decoder extends CharsetDecoder |
| { |
| // Package-private to avoid a trampoline constructor. |
| Decoder (Charset cs) |
| { |
| super (cs, 1.0f, 1.0f); |
| } |
| |
| protected CoderResult decodeLoop (ByteBuffer in, CharBuffer out) |
| { |
| // TODO: Optimize this in the case in.hasArray() / out.hasArray() |
| while (in.hasRemaining ()) |
| { |
| byte b = in.get (); |
| |
| if (!out.hasRemaining ()) |
| { |
| in.position (in.position () - 1); |
| return CoderResult.OVERFLOW; |
| } |
| |
| out.put ((char) (b & 0xFF)); |
| } |
| |
| return CoderResult.UNDERFLOW; |
| } |
| } |
| |
| private static final class Encoder extends CharsetEncoder |
| { |
| // Package-private to avoid a trampoline constructor. |
| Encoder (Charset cs) |
| { |
| super (cs, 1.0f, 1.0f); |
| } |
| |
| public boolean canEncode(char c) |
| { |
| return c <= 0xff; |
| } |
| |
| public boolean canEncode(CharSequence cs) |
| { |
| for (int i = 0; i < cs.length(); ++i) |
| if (! canEncode(cs.charAt(i))) |
| return false; |
| return true; |
| } |
| |
| protected CoderResult encodeLoop (CharBuffer in, ByteBuffer out) |
| { |
| // TODO: Optimize this in the case in.hasArray() / out.hasArray() |
| while (in.hasRemaining ()) |
| { |
| char c = in.get (); |
| |
| if (c > 0xFF) |
| { |
| in.position (in.position () - 1); |
| return CoderResult.unmappableForLength (1); |
| } |
| if (!out.hasRemaining ()) |
| { |
| in.position (in.position () - 1); |
| return CoderResult.OVERFLOW; |
| } |
| |
| out.put ((byte) c); |
| } |
| |
| return CoderResult.UNDERFLOW; |
| } |
| } |
| } |