package org.apache.commons.ssl.asn1;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
/** DER UniversalString object. */
public class DERUniversalString
extends ASN1Object
implements DERString {
private static final char[] table = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
private byte[] string;
/**
* return a Universal String from the passed in object.
*
* @throws IllegalArgumentException if the object cannot be converted.
*/
public static DERUniversalString getInstance(
Object obj) {
if (obj == null || obj instanceof DERUniversalString) {
return (DERUniversalString) obj;
}
if (obj instanceof ASN1OctetString) {
return new DERUniversalString(((ASN1OctetString) obj).getOctets());
}
throw new IllegalArgumentException("illegal object in getInstance: " + obj.getClass().getName());
}
/**
* return a Universal 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.
* @throws IllegalArgumentException if the tagged object cannot
* be converted.
*/
public static DERUniversalString getInstance(
ASN1TaggedObject obj,
boolean explicit) {
return getInstance(obj.getObject());
}
/** basic constructor - byte encoded string. */
public DERUniversalString(
byte[] string) {
this.string = string;
}
public String getString() {
StringBuffer buf = new StringBuffer("#");
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
ASN1OutputStream aOut = new ASN1OutputStream(bOut);
try {
aOut.writeObject(this);
}
catch (IOException e) {
throw new RuntimeException("internal error encoding BitString");
}
byte[] string = bOut.toByteArray();
for (int i = 0; i != string.length; i++) {
buf.append(table[(string[i] >>> 4) & 0xf]);
buf.append(table[string[i] & 0xf]);
}
return buf.toString();
}
public String toString() {
return getString();
}
public byte[] getOctets() {
return string;
}
void encode(
DEROutputStream out)
throws IOException {
out.writeEncoded(UNIVERSAL_STRING, this.getOctets());
}
boolean asn1Equals(
DERObject o) {
if (!(o instanceof DERUniversalString)) {
return false;
}
return this.getString().equals(((DERUniversalString) o).getString());
}
public int hashCode() {
return this.getString().hashCode();
}
}