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package org.bouncycastle.bcpg;
import java.io.IOException;
import java.io.OutputStream;
import org.bouncycastle.util.Arrays;
/**
* Basic type for a user attribute sub-packet.
*/
public class UserAttributeSubpacket
{
int type;
private boolean forceLongLength; // we preserve this as not everyone encodes length properly.
protected byte[] data;
protected UserAttributeSubpacket(
int type,
byte[] data)
{
this(type, false, data);
}
protected UserAttributeSubpacket(
int type,
boolean forceLongLength,
byte[] data)
{
this.type = type;
this.forceLongLength = forceLongLength;
this.data = data;
}
public int getType()
{
return type;
}
/**
* return the generic data making up the packet.
*/
public byte[] getData()
{
return data;
}
public void encode(
OutputStream out)
throws IOException
{
int bodyLen = data.length + 1;
if (bodyLen < 192 && !forceLongLength)
{
out.write((byte)bodyLen);
}
else if (bodyLen <= 8383 && !forceLongLength)
{
bodyLen -= 192;
out.write((byte)(((bodyLen >> 8) & 0xff) + 192));
out.write((byte)bodyLen);
}
else
{
out.write(0xff);
out.write((byte)(bodyLen >> 24));
out.write((byte)(bodyLen >> 16));
out.write((byte)(bodyLen >> 8));
out.write((byte)bodyLen);
}
out.write(type);
out.write(data);
}
public boolean equals(
Object o)
{
if (o == this)
{
return true;
}
if (!(o instanceof UserAttributeSubpacket))
{
return false;
}
UserAttributeSubpacket other = (UserAttributeSubpacket)o;
return this.type == other.type
&& Arrays.areEqual(this.data, other.data);
}
public int hashCode()
{
return type ^ Arrays.hashCode(data);
}
}
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