/** * Finishes writing compressed data to the output stream without closing the underlying stream. * Use this method when applying multiple filters in succession to the same output stream. * * @exception IOException if an I/O error has occurred */ public void finish() throws IOException { if (!def.finished()) { def.finish(); while (!def.finished()) { int len = def.deflate(buf, 0, buf.length); if (def.finished() && len <= buf.length - TRAILER_SIZE) { // last deflater buffer. Fit trailer at the end writeTrailer(buf, len); len = len + TRAILER_SIZE; out.write(buf, 0, len); return; } if (len > 0) out.write(buf, 0, len); } // if we can't fit the trailer at the end of the last // deflater buffer, we write it separately byte[] trailer = new byte[TRAILER_SIZE]; writeTrailer(trailer, 0); out.write(trailer); } }