1 files changed, 68 insertions, 0 deletions
diff --git a/base/util/src/netscape/security/util/UniversalCharsetEncoder.java b/base/util/src/netscape/security/util/UniversalCharsetEncoder.java
new file mode 100644
index 000000000..cd2a51296
--- /dev/null
+++ b/base/util/src/netscape/security/util/UniversalCharsetEncoder.java
@@ -0,0 +1,68 @@
+// --- 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.CharsetEncoder;
+import java.nio.charset.CoderResult;
+
+/**
+ * Converts characters in ASN.1 UniversalString character set to UniversalString
+ * bytes.
+ * 
+ * @author Lily Hsiao
+ * @author Slava Galperin
+ */
+
+public class UniversalCharsetEncoder extends CharsetEncoder {
+
+    public UniversalCharsetEncoder(Charset cs) {
+        super(cs, 4, 4, new byte[] { 0, 0, 0, 0 });
+    }
+
+    /*
+     * Converts an array of Unicode characters into an array of UniversalString
+     * bytes and returns the conversion result.
+     * @param in input character buffer to convert.
+     * @param out byte buffer to store output.
+     * @return encoding result.
+     */
+    protected CoderResult encodeLoop(CharBuffer in, ByteBuffer out) {
+
+        while (true) {
+
+            if (in.remaining() < 1)
+                return CoderResult.UNDERFLOW;
+
+            in.mark();
+            char c = in.get();
+
+            if (out.remaining() < 4) {
+                in.reset();
+                return CoderResult.OVERFLOW;
+            }
+
+            out.put((byte) 0);
+            out.put((byte) 0);
+            out.put((byte) ((c >> 8) & 0xff));
+            out.put((byte) (c & 0xff));
+        }
+    }
+}