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// java.io.ByteArrayOutputStream
// An implementation of the Java Language Specification section 22.18
// Written by Charles Briscoe-Smith; refer to the file LEGAL for details.
package java.io;
public class ByteArrayOutputStream extends OutputStream {
protected byte[] buf;
protected int count;
public ByteArrayOutputStream() { this(32); }
public ByteArrayOutputStream(int s) { buf=new byte[s]; count=0; }
private void ensureSize(int len)
{
if (buf.length>=len) return;
int newlen=buf.length*2;
if (newlen<len) newlen=len;
byte[] newbuf=new byte[newlen];
for (int i=0; i<count; i++)
newbuf[i]=buf[i];
buf=newbuf;
}
public void write(int b)
{
ensureSize(count+1);
buf[count++]=(byte) b;
}
public void write(byte[] b, int off, int len)
throws NullPointerException, IndexOutOfBoundsException
{
if (len==0) return;
if (off<0 || len<0 || off+len>b.length)
throw new IndexOutOfBoundsException();
ensureSize(count+len);
while (len-->0) {
buf[count++]=b[off++];
}
}
public int size() { return count; }
public void reset() { count=0; }
public byte[] toByteArray()
{
byte[] rv=new byte[count];
for (int i=0; i<count; i++)
rv[i]=buf[i];
return rv;
}
public String toString() { return toString(0); }
public String toString(int hi) { return new String(buf, hi, 0, count); }
public void writeTo(OutputStream out) throws IOException
{
out.write(buf, 0, count);
}
}
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