J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2001 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | |
| 27 | /** |
| 28 | * This FilterWriter class takes an existing Writer and uses |
| 29 | * the 'back-tick U' escape notation to escape characters which are |
| 30 | * encountered within the input character based stream which |
| 31 | * are outside the 7-bit ASCII range. The native platforms linefeed |
| 32 | * character is emitted for each line of processed input |
| 33 | */ |
| 34 | |
| 35 | package sun.tools.native2ascii; |
| 36 | import java.io.*; |
| 37 | import java.nio.BufferOverflowException; |
| 38 | |
| 39 | class N2AFilter extends FilterWriter { |
| 40 | |
| 41 | public N2AFilter(Writer out) { super(out); } |
| 42 | |
| 43 | public void write(char b) throws IOException { |
| 44 | char[] buf = new char[1]; |
| 45 | buf[0] = (char)b; |
| 46 | write(buf, 0, 1); |
| 47 | } |
| 48 | |
| 49 | public void write(char[] buf, int off, int len) throws IOException { |
| 50 | |
| 51 | String lineBreak = System.getProperty("line.separator"); |
| 52 | |
| 53 | //System.err.println ("xx Out buffer length is " + buf.length ); |
| 54 | for (int i = 0; i < len; i++) { |
| 55 | if ((buf[i] > '\u007f')) { |
| 56 | // write \udddd |
| 57 | out.write('\\'); |
| 58 | out.write('u'); |
| 59 | String hex = |
| 60 | Integer.toHexString(buf[i]); |
| 61 | StringBuffer hex4 = new StringBuffer(hex); |
| 62 | hex4.reverse(); |
| 63 | int length = 4 - hex4.length(); |
| 64 | for (int j = 0; j < length; j++) { |
| 65 | hex4.append('0'); |
| 66 | } |
| 67 | for (int j = 0; j < 4; j++) { |
| 68 | out.write(hex4.charAt(3 - j)); |
| 69 | } |
| 70 | } else |
| 71 | out.write(buf[i]); |
| 72 | } |
| 73 | } |
| 74 | } |