diff options
| author | tknall <tknall@7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c> | 2006-12-01 12:20:24 +0000 |
|---|---|---|
| committer | tknall <tknall@7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c> | 2006-12-01 12:20:24 +0000 |
| commit | 6025b6016517c6d898d8957d1d7e03ba71431912 (patch) | |
| tree | b15bd6fa5ffe9588a9bca3f2b8a7e358f83b6eba /src/main/java/com/lowagie/bc/asn1/DERTaggedObject.java | |
| parent | d2c77e820ab4aba8235d71275755021347b3ad10 (diff) | |
| download | pdf-as-3-6025b6016517c6d898d8957d1d7e03ba71431912.tar.gz pdf-as-3-6025b6016517c6d898d8957d1d7e03ba71431912.tar.bz2 pdf-as-3-6025b6016517c6d898d8957d1d7e03ba71431912.zip | |
Initial import of release 2.2.REL-2.2@923
git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@4 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c
Diffstat (limited to 'src/main/java/com/lowagie/bc/asn1/DERTaggedObject.java')
| -rw-r--r-- | src/main/java/com/lowagie/bc/asn1/DERTaggedObject.java | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/src/main/java/com/lowagie/bc/asn1/DERTaggedObject.java b/src/main/java/com/lowagie/bc/asn1/DERTaggedObject.java new file mode 100644 index 0000000..dbc9e36 --- /dev/null +++ b/src/main/java/com/lowagie/bc/asn1/DERTaggedObject.java @@ -0,0 +1,88 @@ +package com.lowagie.bc.asn1;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+
+/**
+ * DER TaggedObject - in ASN.1 nottation this is any object proceeded by
+ * a [n] where n is some number - these are assume to follow the construction
+ * rules (as with sequences).
+ */
+public class DERTaggedObject
+ extends ASN1TaggedObject
+{
+ /**
+ * @param tagNo the tag number for this object.
+ * @param obj the tagged object.
+ */
+ public DERTaggedObject(
+ int tagNo,
+ DEREncodable obj)
+ {
+ super(tagNo, obj);
+ }
+
+ /**
+ * @param explicit true if an explicitly tagged object.
+ * @param tagNo the tag number for this object.
+ * @param obj the tagged object.
+ */
+ public DERTaggedObject(
+ boolean explicit,
+ int tagNo,
+ DEREncodable obj)
+ {
+ super(explicit, tagNo, obj);
+ }
+
+ /**
+ * create an implicitly tagged object that contains a zero
+ * length sequence.
+ */
+ public DERTaggedObject(
+ int tagNo)
+ {
+ super(false, tagNo, new DERSequence());
+ }
+
+ void encode(
+ DEROutputStream out)
+ throws IOException
+ {
+ if (!empty)
+ {
+ ByteArrayOutputStream bOut = new ByteArrayOutputStream();
+ DEROutputStream dOut = new DEROutputStream(bOut);
+
+ dOut.writeObject(obj);
+ dOut.close();
+
+ byte[] bytes = bOut.toByteArray();
+
+ if (explicit)
+ {
+ out.writeEncoded(CONSTRUCTED | TAGGED | tagNo, bytes);
+ }
+ else
+ {
+ //
+ // need to mark constructed types...
+ //
+ if ((bytes[0] & CONSTRUCTED) != 0)
+ {
+ bytes[0] = (byte)(CONSTRUCTED | TAGGED | tagNo);
+ }
+ else
+ {
+ bytes[0] = (byte)(TAGGED | tagNo);
+ }
+
+ out.write(bytes);
+ }
+ }
+ else
+ {
+ out.writeEncoded(CONSTRUCTED | TAGGED | tagNo, new byte[0]);
+ }
+ }
+}
|