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| 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/BERTaggedObject.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/BERTaggedObject.java')
| -rw-r--r-- | src/main/java/com/lowagie/bc/asn1/BERTaggedObject.java | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/src/main/java/com/lowagie/bc/asn1/BERTaggedObject.java b/src/main/java/com/lowagie/bc/asn1/BERTaggedObject.java new file mode 100644 index 0000000..203bc22 --- /dev/null +++ b/src/main/java/com/lowagie/bc/asn1/BERTaggedObject.java @@ -0,0 +1,119 @@ +package com.lowagie.bc.asn1;
+
+import java.io.IOException;
+import java.util.Enumeration;
+
+/**
+ * BER 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 BERTaggedObject
+ extends DERTaggedObject
+{
+ /**
+ * @param tagNo the tag number for this object.
+ * @param obj the tagged object.
+ */
+ public BERTaggedObject(
+ 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 BERTaggedObject(
+ boolean explicit,
+ int tagNo,
+ DEREncodable obj)
+ {
+ super(explicit, tagNo, obj);
+ }
+
+ /**
+ * create an implicitly tagged object that contains a zero
+ * length sequence.
+ */
+ public BERTaggedObject(
+ int tagNo)
+ {
+ super(false, tagNo, new BERConstructedSequence());
+ }
+
+ void encode(
+ DEROutputStream out)
+ throws IOException
+ {
+ if (out instanceof ASN1OutputStream || out instanceof BEROutputStream)
+ {
+ out.write(CONSTRUCTED | TAGGED | tagNo);
+ out.write(0x80);
+
+ if (!empty)
+ {
+ if (!explicit)
+ {
+ if (obj instanceof ASN1OctetString)
+ {
+ Enumeration e;
+
+ if (obj instanceof BERConstructedOctetString)
+ {
+ e = ((BERConstructedOctetString)obj).getObjects();
+ }
+ else
+ {
+ ASN1OctetString octs = (ASN1OctetString)obj;
+ BERConstructedOctetString berO = new BERConstructedOctetString(octs.getOctets());
+
+ e = berO.getObjects();
+ }
+
+ while (e.hasMoreElements())
+ {
+ out.writeObject(e.nextElement());
+ }
+ }
+ else if (obj instanceof ASN1Sequence)
+ {
+ Enumeration e = ((ASN1Sequence)obj).getObjects();
+
+ while (e.hasMoreElements())
+ {
+ out.writeObject(e.nextElement());
+ }
+ }
+ else if (obj instanceof ASN1Set)
+ {
+ Enumeration e = ((ASN1Set)obj).getObjects();
+
+ while (e.hasMoreElements())
+ {
+ out.writeObject(e.nextElement());
+ }
+ }
+ else
+ {
+ throw new RuntimeException("not implemented: " + obj.getClass().getName());
+ }
+ }
+ else
+ {
+ out.writeObject(obj);
+ }
+ }
+
+ out.write(0x00);
+ out.write(0x00);
+ }
+ else
+ {
+ super.encode(out);
+ }
+ }
+}
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