package com.lowagie.bc.asn1; import java.io.IOException; /** * DER VisibleString object. */ public class DERVisibleString extends DERObject implements DERString { String string; /** * return a Visible String from the passed in object. * * @exception IllegalArgumentException if the object cannot be converted. */ public static DERVisibleString getInstance( Object obj) { if (obj == null || obj instanceof DERVisibleString) { return (DERVisibleString)obj; } if (obj instanceof ASN1OctetString) { return new DERVisibleString(((ASN1OctetString)obj).getOctets()); } if (obj instanceof ASN1TaggedObject) { return getInstance(((ASN1TaggedObject)obj).getObject()); } throw new IllegalArgumentException("illegal object in getInstance: " + obj.getClass().getName()); } /** * return a Visible String 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 DERVisibleString getInstance( ASN1TaggedObject obj, boolean explicit) { return getInstance(obj.getObject()); } /** * basic constructor - byte encoded string. */ public DERVisibleString( byte[] string) { char[] cs = new char[string.length]; for (int i = 0; i != cs.length; i++) { cs[i] = (char)(string[i] & 0xff); } this.string = new String(cs); } /** * basic constructor */ public DERVisibleString( String string) { this.string = string; } public String getString() { return string; } public byte[] getOctets() { char[] cs = string.toCharArray(); byte[] bs = new byte[cs.length]; for (int i = 0; i != cs.length; i++) { bs[i] = (byte)cs[i]; } return bs; } void encode( DEROutputStream out) throws IOException { out.writeEncoded(VISIBLE_STRING, this.getOctets()); } public boolean equals( Object o) { if ((o == null) || !(o instanceof DERVisibleString)) { return false; } return this.getString().equals(((DERVisibleString)o).getString()); } }