package org.bouncycastle.asn1.ess;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DEREncodable;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DERObjectIdentifier;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.DERUTF8String;
public class ContentHints
extends ASN1Encodable
{
private DERUTF8String contentDescription;
private DERObjectIdentifier contentType;
public static ContentHints getInstance(Object o)
{
if (o == null || o instanceof ContentHints)
{
return (ContentHints)o;
}
else if (o instanceof ASN1Sequence)
{
return new ContentHints((ASN1Sequence)o);
}
throw new IllegalArgumentException(
"unknown object in 'ContentHints' factory : "
+ o.getClass().getName() + ".");
}
/**
* constructor
*/
private ContentHints(ASN1Sequence seq)
{
DEREncodable field = seq.getObjectAt(0);
if (field.getDERObject() instanceof DERUTF8String)
{
contentDescription = DERUTF8String.getInstance(field);
contentType = DERObjectIdentifier.getInstance(seq.getObjectAt(1));
}
else
{
contentType = DERObjectIdentifier.getInstance(seq.getObjectAt(0));
}
}
public ContentHints(
DERObjectIdentifier contentType)
{
this.contentType = contentType;
this.contentDescription = null;
}
public ContentHints(
DERObjectIdentifier contentType,
DERUTF8String contentDescription)
{
this.contentType = contentType;
this.contentDescription = contentDescription;
}
public DERObjectIdentifier getContentType()
{
return contentType;
}
public DERUTF8String getContentDescription()
{
return contentDescription;
}
/**
* <pre>
* ContentHints ::= SEQUENCE {
* contentDescription UTF8String (SIZE (1..MAX)) OPTIONAL,
* contentType ContentType }
* </pre>
*/
public DERObject toASN1Object()
{
ASN1EncodableVector v = new ASN1EncodableVector();
if (contentDescription != null)
{
v.add(contentDescription);
}
v.add(contentType);
return new DERSequence(v);
}
}