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// --- BEGIN COPYRIGHT BLOCK ---
// This program 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; version 2 of the License.
//
// This program 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 this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// (C) 2007 Red Hat, Inc.
// All rights reserved.
// --- END COPYRIGHT BLOCK ---
package netscape.security.util;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CoderResult;
import java.nio.charset.CodingErrorAction;
/**
* Converts bytes in ASN.1 PrintableString character set to PrintableString
* characters.
*
* @author Lily Hsiao
* @author Slava Galperin
*/
public class PrintableCharsetDecoder extends CharsetDecoder {
public PrintableCharsetDecoder(Charset cs) {
super(cs, 1, 1);
}
protected CoderResult decodeLoop(ByteBuffer in, CharBuffer out) {
while (true) {
if (in.remaining() < 1)
return CoderResult.UNDERFLOW;
in.mark();
byte b = in.get();
char c = (char) (b & 0x7f);
if (CodingErrorAction.REPORT == unmappableCharacterAction() &&
!PrintableCharset.isPrintableChar(c)) {
/*
"bug" fix for 359010
return CoderResult.unmappableForLength(1);
*/
continue;
}
if (out.remaining() < 1) {
in.reset();
return CoderResult.OVERFLOW;
}
out.put(c);
}
}
}
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