diff options
Diffstat (limited to 'base/util/src/netscape/security/util/IA5CharsetDecoder.java')
-rw-r--r-- | base/util/src/netscape/security/util/IA5CharsetDecoder.java | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/base/util/src/netscape/security/util/IA5CharsetDecoder.java b/base/util/src/netscape/security/util/IA5CharsetDecoder.java new file mode 100644 index 000000000..620d65aca --- /dev/null +++ b/base/util/src/netscape/security/util/IA5CharsetDecoder.java @@ -0,0 +1,62 @@ +// --- 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 IA5String character set to IA5String characters. + * + * @author Lily Hsiao + * @author Slava Galperin + */ + +public class IA5CharsetDecoder extends CharsetDecoder { + + public IA5CharsetDecoder(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(); + + if (CodingErrorAction.REPORT == unmappableCharacterAction() && (b & 0x80) != 0) { + return CoderResult.unmappableForLength(1); + } + + if (out.remaining() < 1) { + in.reset(); + return CoderResult.OVERFLOW; + } + + out.put((char) (b & 0x7f)); + } + } +} |