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/* GENERATED SOURCE. DO NOT MODIFY. */
package com.android.org.bouncycastle.asn1;
import java.io.IOException;
/**
* Public facade of ASN.1 Boolean data.
* <p>
* Use following to place a new instance of ASN.1 Boolean in your data:
* <ul>
* <li> ASN1Boolean.TRUE literal</li>
* <li> ASN1Boolean.FALSE literal</li>
* <li> {@link ASN1Boolean#getInstance(boolean) ASN1Boolean.getInstance(boolean)}</li>
* <li> {@link ASN1Boolean#getInstance(int) ASN1Boolean.getInstance(int)}</li>
* </ul>
* @hide This class is not part of the Android public SDK API
*/
public class ASN1Boolean
extends ASN1Primitive
{
private static final byte FALSE_VALUE = 0x00;
private static final byte TRUE_VALUE = (byte)0xFF;
public static final ASN1Boolean FALSE = new ASN1Boolean(FALSE_VALUE);
public static final ASN1Boolean TRUE = new ASN1Boolean(TRUE_VALUE);
private final byte value;
/**
* Return a boolean from the passed in object.
*
* @param obj an ASN1Boolean or an object that can be converted into one.
* @exception IllegalArgumentException if the object cannot be converted.
* @return an ASN1Boolean instance.
*/
public static ASN1Boolean getInstance(
Object obj)
{
if (obj == null || obj instanceof ASN1Boolean)
{
return (ASN1Boolean)obj;
}
if (obj instanceof byte[])
{
byte[] enc = (byte[])obj;
try
{
return (ASN1Boolean)fromByteArray(enc);
}
catch (IOException e)
{
throw new IllegalArgumentException("failed to construct boolean from byte[]: " + e.getMessage());
}
}
throw new IllegalArgumentException("illegal object in getInstance: " + obj.getClass().getName());
}
/**
* Return an ASN1Boolean from the passed in boolean.
* @param value true or false depending on the ASN1Boolean wanted.
* @return an ASN1Boolean instance.
*/
public static ASN1Boolean getInstance(boolean value)
{
return value ? TRUE : FALSE;
}
/**
* Return an ASN1Boolean from the passed in value.
* @param value non-zero (true) or zero (false) depending on the ASN1Boolean wanted.
* @return an ASN1Boolean instance.
*/
public static ASN1Boolean getInstance(int value)
{
return value != 0 ? TRUE : FALSE;
}
// BEGIN Android-added: Unknown reason
/**
* return a ASN1Boolean from the passed in array.
*/
public static ASN1Boolean getInstance(
byte[] octets)
{
return (octets[0] != 0) ? TRUE : FALSE;
}
// END Android-added: Unknown reason
/**
* 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.
* @return an ASN1Boolean instance.
*/
public static ASN1Boolean getInstance(ASN1TaggedObject obj, boolean explicit)
{
ASN1Primitive o = obj.getObject();
if (explicit || o instanceof ASN1Boolean)
{
return getInstance(o);
}
else
{
return ASN1Boolean.fromOctetString(ASN1OctetString.getInstance(o).getOctets());
}
}
private ASN1Boolean(byte value)
{
this.value = value;
}
public boolean isTrue()
{
return value != FALSE_VALUE;
}
boolean isConstructed()
{
return false;
}
int encodedLength()
{
return 3;
}
void encode(ASN1OutputStream out, boolean withTag) throws IOException
{
out.writeEncoded(withTag, BERTags.BOOLEAN, value);
}
boolean asn1Equals(ASN1Primitive other)
{
if (!(other instanceof ASN1Boolean))
{
return false;
}
ASN1Boolean that = (ASN1Boolean)other;
return this.isTrue() == that.isTrue();
}
public int hashCode()
{
return isTrue() ? 1 : 0;
}
ASN1Primitive toDERObject()
{
return isTrue() ? TRUE : FALSE;
}
public String toString()
{
return isTrue() ? "TRUE" : "FALSE";
}
static ASN1Boolean fromOctetString(byte[] value)
{
if (value.length != 1)
{
throw new IllegalArgumentException("BOOLEAN value should have 1 byte in it");
}
byte b = value[0];
switch (b)
{
case FALSE_VALUE: return FALSE;
case TRUE_VALUE: return TRUE;
default: return new ASN1Boolean(b);
}
}
}
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