package com.lowagie.bc.asn1; import java.io.IOException; public class DERBoolean extends DERObject { byte value; public static final DERBoolean FALSE = new DERBoolean(false); public static final DERBoolean TRUE = new DERBoolean(true); /** * return a boolean from the passed in object. * * @exception IllegalArgumentException if the object cannot be converted. */ public static DERBoolean getInstance( Object obj) { if (obj == null || obj instanceof DERBoolean) { return (DERBoolean)obj; } if (obj instanceof ASN1OctetString) { return new DERBoolean(((ASN1OctetString)obj).getOctets()); } if (obj instanceof ASN1TaggedObject) { return getInstance(((ASN1TaggedObject)obj).getObject()); } throw new IllegalArgumentException("illegal object in getInstance: " + obj.getClass().getName()); } /** * return a DERBoolean from the passed in boolean. */ public static DERBoolean getInstance( boolean value) { return (value ? TRUE : FALSE); } /** * return a Boolean from a tagged object. * * @param obj the tagged object holding the object we want * @param explicit true if the object is meant to be explicitly * tagged false otherwise. * @exception IllegalArgumentException if the tagged object cannot * be converted. */ public static DERBoolean getInstance( ASN1TaggedObject obj, boolean explicit) { return getInstance(obj.getObject()); } public DERBoolean( byte[] value) { this.value = value[0]; } public DERBoolean( boolean value) { this.value = (value) ? (byte)0xff : (byte)0; } public boolean isTrue() { return (value != 0); } void encode( DEROutputStream out) throws IOException { byte[] bytes = new byte[1]; bytes[0] = value; out.writeEncoded(BOOLEAN, bytes); } public boolean equals( Object o) { if ((o == null) || !(o instanceof DERBoolean)) { return false; } return (value == ((DERBoolean)o).value); } }