/** puts as utf-8 string */
protected int _put(String str) {
final int len = str.length();
int total = 0;
for (int i = 0; i < len; ) {
int c = Character.codePointAt(str, i);
if (c < 0x80) {
_buf.write((byte) c);
total += 1;
} else if (c < 0x800) {
_buf.write((byte) (0xc0 + (c >> 6)));
_buf.write((byte) (0x80 + (c & 0x3f)));
total += 2;
} else if (c < 0x10000) {
_buf.write((byte) (0xe0 + (c >> 12)));
_buf.write((byte) (0x80 + ((c >> 6) & 0x3f)));
_buf.write((byte) (0x80 + (c & 0x3f)));
total += 3;
} else {
_buf.write((byte) (0xf0 + (c >> 18)));
_buf.write((byte) (0x80 + ((c >> 12) & 0x3f)));
_buf.write((byte) (0x80 + ((c >> 6) & 0x3f)));
_buf.write((byte) (0x80 + (c & 0x3f)));
total += 4;
}
i += Character.charCount(c);
}
_buf.write((byte) 0);
total++;
return total;
}
