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package org.bouncycastle.asn1;
import java.io.IOException;
import org.bouncycastle.util.Arrays;
import org.bouncycastle.util.Strings;
public class DERGraphicString
extends ASN1Primitive
implements ASN1String
{
private final byte[] string;
/**
* return a Graphic String from the passed in object
*
* @param obj a DERGraphicString or an object that can be converted into one.
* @exception IllegalArgumentException if the object cannot be converted.
* @return a DERGraphicString instance, or null.
*/
public static DERGraphicString getInstance(
Object obj)
{
if (obj == null || obj instanceof DERGraphicString)
{
return (DERGraphicString)obj;
}
if (obj instanceof byte[])
{
try
{
return (DERGraphicString)fromByteArray((byte[])obj);
}
catch (Exception e)
{
throw new IllegalArgumentException("encoding error in getInstance: " + e.toString());
}
}
throw new IllegalArgumentException("illegal object in getInstance: " + obj.getClass().getName());
}
/**
* return a Graphic 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.
* @return a DERGraphicString instance, or null.
*/
public static DERGraphicString getInstance(
ASN1TaggedObject obj,
boolean explicit)
{
ASN1Primitive o = obj.getObject();
if (explicit || o instanceof DERGraphicString)
{
return getInstance(o);
}
else
{
return new DERGraphicString(((ASN1OctetString)o).getOctets());
}
}
/**
* basic constructor - with bytes.
* @param string the byte encoding of the characters making up the string.
*/
public DERGraphicString(
byte[] string)
{
this.string = Arrays.clone(string);
}
public byte[] getOctets()
{
return Arrays.clone(string);
}
boolean isConstructed()
{
return false;
}
int encodedLength()
{
return 1 + StreamUtil.calculateBodyLength(string.length) + string.length;
}
void encode(
ASN1OutputStream out)
throws IOException
{
out.writeEncoded(BERTags.GRAPHIC_STRING, string);
}
public int hashCode()
{
return Arrays.hashCode(string);
}
boolean asn1Equals(
ASN1Primitive o)
{
if (!(o instanceof DERGraphicString))
{
return false;
}
DERGraphicString s = (DERGraphicString)o;
return Arrays.areEqual(string, s.string);
}
public String getString()
{
return Strings.fromByteArray(string);
}
}
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