diff options
Diffstat (limited to 'pki/base/util/src/netscape/security/util/ByteToCharUniversalString.java')
-rw-r--r-- | pki/base/util/src/netscape/security/util/ByteToCharUniversalString.java | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/pki/base/util/src/netscape/security/util/ByteToCharUniversalString.java b/pki/base/util/src/netscape/security/util/ByteToCharUniversalString.java new file mode 100644 index 000000000..57b678dd8 --- /dev/null +++ b/pki/base/util/src/netscape/security/util/ByteToCharUniversalString.java @@ -0,0 +1,97 @@ +// --- 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 sun.io.*; + +/** + * Converts bytes in ASN.1 UniversalString character set to unicode + * characters. + * + * @author Lily Hsiao + * @author Slava Galperin + */ + +public class ByteToCharUniversalString extends ByteToCharConverter +{ + public String getCharacterEncoding() { + return "ASN.1 UniversalString"; + } + + public int convert(byte[] input, int inStart, int inEnd, + char[] output, int outStart, int outEnd) + throws ConversionBufferFullException, + UnknownCharacterException + { + int j = outStart; + + + int i = inStart; + while(i < inEnd) { + // XXX we do not know what to do with truly UCS-4 characters here + // we also assumed network byte order + + if ( i+3 >= inEnd || + (!((input[i] == 0 && input[i+1] == 0) || + (input[i+2] == 0 && input[i+3] == 0)))) { + byteOff = i; + charOff = j; + throw new UnknownCharacterException(); + } + if (input[i+2] == 0 && input[i+3] == 0) { + // Try to be a bit forgiving. If the byte order is + // reversed, we still try handle it. + + // Sample Date Set (1): + // 0000000 f 0 \0 \0 213 0 \0 \0 S 0 \0 \0 + // 0000014 + + // Sample Date Set (2): + // 0000000 w \0 \0 \0 w \0 \0 \0 w \0 \0 \0 . \0 \0 \0 + // 0000020 ( \0 \0 \0 t \0 \0 \0 o \0 \0 \0 b \0 \0 \0 + // 0000040 e \0 \0 \0 | \0 \0 \0 n \0 \0 \0 o \0 \0 \0 + // 0000060 t \0 \0 \0 t \0 \0 \0 o \0 \0 \0 b \0 \0 \0 + // 0000100 e \0 \0 \0 ) \0 \0 \0 . \0 \0 \0 c \0 \0 \0 + // 0000120 o \0 \0 \0 m \0 \0 \0 + // 0000130 + output[j] = (char)(((input[i+1] << 8)& 0xff00) + (input[i] & 0x00ff)); + } else { + // This should be the right order. + // + // 0000000 0000 00c4 0000 0064 0000 006d 0000 0069 + // 0000020 0000 006e 0000 0020 0000 0051 0000 0041 + // 0000040 + + // (input[i] == 0 && input[i+1] == 0) + output[j] = (char)(((input[i+2] << 8)& 0xff00) + (input[i+3] & 0x00ff)); + } + j++; + i += 4; + } + byteOff = inEnd; + charOff = j; + return j - outStart; + } + + public int flush(char[] output, int outStart, int outEnd) { + return 0; + } + + public void reset() { } + +} |