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package org.spongycastle.cms;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.spongycastle.util.io.Streams;
class CMSProcessableInputStream implements CMSProcessable, CMSReadable
{
private InputStream input;
private boolean used = false;
public CMSProcessableInputStream(
InputStream input)
{
this.input = input;
}
public InputStream getInputStream()
{
checkSingleUsage();
return input;
}
public void write(OutputStream zOut)
throws IOException, CMSException
{
checkSingleUsage();
Streams.pipeAll(input, zOut);
input.close();
}
public Object getContent()
{
return getInputStream();
}
private synchronized void checkSingleUsage()
{
if (used)
{
throw new IllegalStateException("CMSProcessableInputStream can only be used once");
}
used = true;
}
}
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