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package examples.decorator;
import java.io.Writer;
import java.io.IOException;
/*
* Here assumes there's no implementation in Writer
* like 'implements Writer'
*/
public class ReturnSpecifier
extends Writer
{
private static final char[] mark = { ' ', '<' };
private Writer out;
public ReturnSpecifier(Writer out) {
this.out = out;
}
public void write(char cbuf[], int off, int len)
throws IOException
{
int done = off;
for (int i = done; i < off + len; ++i) {
if (cbuf[i] == Character.LINE_SEPARATOR
|| cbuf[i] == '\n')
{
out.write(cbuf, done, i - done);
// print a mark for carriage return
out.write(mark, 0, mark.length);
// print a carriage return
out.write(cbuf, i, 1);
done = i + 1;
}
}
out.write(cbuf, done, off + len - done);
}
public void close() throws IOException {
out.close();
}
public void flush() throws IOException {
out.flush();
}
/*****
public void write(char[] cbuf) throws IOException {
out.write(cbuf);
}
public void write(int c) throws IOException {
out.write(c);
}
public void write(String str) throws IOException {
out.write(str);
}
public void write(String str, int off, int len) throws IOException {
out.write(str, off, len);
}
*****/
}
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