| /* |
| * Copyright (c) 2001, 2008, 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 FilterWriter class takes an existing Writer and uses |
| * the 'back-tick U' escape notation to escape characters which are |
| * encountered within the input character based stream which |
| * are outside the 7-bit ASCII range. The native platforms linefeed |
| * character is emitted for each line of processed input |
| */ |
| |
| package sun.tools.native2ascii; |
| import java.io.*; |
| import java.nio.BufferOverflowException; |
| |
| class N2AFilter extends FilterWriter { |
| |
| public N2AFilter(Writer out) { super(out); } |
| |
| public void write(char b) throws IOException { |
| char[] buf = new char[1]; |
| buf[0] = b; |
| write(buf, 0, 1); |
| } |
| |
| public void write(char[] buf, int off, int len) throws IOException { |
| |
| String lineBreak = System.getProperty("line.separator"); |
| |
| //System.err.println ("xx Out buffer length is " + buf.length ); |
| for (int i = 0; i < len; i++) { |
| if ((buf[i] > '\u007f')) { |
| // write \udddd |
| out.write('\\'); |
| out.write('u'); |
| String hex = |
| Integer.toHexString(buf[i]); |
| StringBuilder hex4 = new StringBuilder(hex); |
| hex4.reverse(); |
| int length = 4 - hex4.length(); |
| for (int j = 0; j < length; j++) { |
| hex4.append('0'); |
| } |
| for (int j = 0; j < 4; j++) { |
| out.write(hex4.charAt(3 - j)); |
| } |
| } else |
| out.write(buf[i]); |
| } |
| } |
| } |