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/*
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* Copyright 2001-2008 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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/**
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* This FilterWriter class takes an existing Writer and uses
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* the 'back-tick U' escape notation to escape characters which are
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* encountered within the input character based stream which
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* are outside the 7-bit ASCII range. The native platforms linefeed
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* character is emitted for each line of processed input
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*/
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package sun.tools.native2ascii;
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import java.io.*;
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import java.nio.BufferOverflowException;
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class N2AFilter extends FilterWriter {
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public N2AFilter(Writer out) { super(out); }
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public void write(char b) throws IOException {
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char[] buf = new char[1];
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buf[0] = b;
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write(buf, 0, 1);
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}
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public void write(char[] buf, int off, int len) throws IOException {
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String lineBreak = System.getProperty("line.separator");
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//System.err.println ("xx Out buffer length is " + buf.length );
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for (int i = 0; i < len; i++) {
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if ((buf[i] > '\u007f')) {
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// write \udddd
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out.write('\\');
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out.write('u');
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String hex =
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Integer.toHexString(buf[i]);
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StringBuffer hex4 = new StringBuffer(hex);
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hex4.reverse();
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int length = 4 - hex4.length();
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for (int j = 0; j < length; j++) {
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hex4.append('0');
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}
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for (int j = 0; j < 4; j++) {
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out.write(hex4.charAt(3 - j));
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}
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} else
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out.write(buf[i]);
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}
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}
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}
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