private int readLeByte() throws IOException {
if (avail <= 0) {
fillBuf();
if (avail <= 0) throw new ZipException("EOF in header");
}
return buf[len - avail--] & 0xff;
}
private int readBuf(byte[] out, int offset, int length) throws IOException {
if (avail <= 0) {
fillBuf();
if (avail <= 0) return -1;
}
if (length > avail) length = avail;
System.arraycopy(buf, len - avail, out, offset, length);
avail -= length;
return length;
}