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// DataOutputStream.java - Output filter that implements DataOutput
/* Copyright (C) 1998, 1999 Cygnus Solutions
This file is part of libgcj.
This software is copyrighted work licensed under the terms of the
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
details. */
package java.io;
/**
* @author Tom Tromey <tromey@cygnus.com>
* @date September 24, 1998
*/
/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
* "The Java Language Specification", ISBN 0-201-63451-1
* Status: Complete to version 1.1.
*/
public class DataOutputStream extends FilterOutputStream implements DataOutput
{
public DataOutputStream (OutputStream out)
{
super (out);
written = 0;
}
public void flush () throws IOException
{
out.flush();
}
public final int size ()
{
return written;
}
public synchronized void write (int b) throws IOException
{
out.write(b);
++written;
}
public synchronized void write (byte[] b, int off, int len)
throws IOException, NullPointerException, IndexOutOfBoundsException
{
out.write(b, off, len);
written += len - off;
}
public final void writeBoolean (boolean v) throws IOException
{
write (v ? 1 : 0);
}
public final void writeByte (int v) throws IOException
{
write (v & 0xff);
}
public final void writeShort (int v) throws IOException
{
write ((byte) (0xff & (v >> 8)));
write ((byte) (0xff & v));
}
public final void writeChar (int v) throws IOException
{
write ((byte) (0xff & (v >> 8)));
write ((byte) (0xff & v));
}
public final void writeInt (int v) throws IOException
{
write ((byte) (0xff & (v >> 24)));
write ((byte) (0xff & (v >> 16)));
write ((byte) (0xff & (v >> 8)));
write ((byte) (0xff & v));
}
public final void writeLong (long v) throws IOException
{
write ((byte) (0xff & (v >> 56)));
write ((byte) (0xff & (v >> 48)));
write ((byte) (0xff & (v >> 40)));
write ((byte) (0xff & (v >> 32)));
write ((byte) (0xff & (v >> 24)));
write ((byte) (0xff & (v >> 16)));
write ((byte) (0xff & (v >> 8)));
write ((byte) (0xff & v));
}
public final void writeFloat (float v) throws IOException
{
writeInt (Float.floatToIntBits(v));
}
public final void writeDouble (double v) throws IOException
{
writeLong (Double.doubleToLongBits(v));
}
public final void writeBytes (String s) throws IOException
{
int len = s.length();
for (int i = 0; i < len; ++i)
writeByte (s.charAt(i));
}
public final void writeChars (String s) throws IOException
{
int len = s.length();
for (int i = 0; i < len; ++i)
writeChar (s.charAt(i));
}
public final void writeUTF (String s) throws IOException
{
int len = s.length();
int sum = 0;
for (int i = 0; i < len && sum <= 65535; ++i)
{
char c = s.charAt(i);
if (c >= '\u0001' && c <= '\u007f')
sum += 1;
else if (c == '\u0000' || (c >= '\u0080' && c <= '\u07ff'))
sum += 2;
else
sum += 3;
}
if (sum > 65535)
throw new UTFDataFormatException ();
writeShort (sum);
for (int i = 0; i < len; ++i)
{
char c = s.charAt(i);
if (c >= '\u0001' && c <= '\u007f')
write (c);
else if (c == '\u0000' || (c >= '\u0080' && c <= '\u07ff'))
{
write (0xc0 | (0x1f & (c >> 6)));
write (0x80 | (0x3f & c));
}
else
{
// JSL says the first byte should be or'd with 0xc0, but
// that is a typo. Unicode says 0xe0, and that is what is
// consistent with DataInputStream.
write (0xe0 | (0x0f & (c >> 12)));
write (0x80 | (0x3f & (c >> 6)));
write (0x80 | (0x3f & c));
}
}
}
// Number of bytes written so far.
protected int written;
}
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