Method encodeInteger

java/org/apache/coyote/http2/Hpack.java:204–218

Encodes an integer in the HPACK prefix format. This method assumes that the buffer has already had the first 8-n bits filled. As such it will modify the last byte that is already present in the buffer, and potentially add more if required @param source The buffer that contains the integer @par

(ByteBuffer source, int value, int n)

     * @param n      The encoding prefix length
     */
    static void encodeInteger(ByteBuffer source, int value, int n) {
        int twoNminus1 = PREFIX_TABLE[n];
        int pos = source.position() - 1;
        if (value < twoNminus1) {
            source.put(pos, (byte) (source.get(pos) | value));
        } else {
            source.put(pos, (byte) (source.get(pos) | twoNminus1));
            value = value - twoNminus1;
            while (value >= 128) {
                source.put((byte) (value % 128 + 128));
                value = value / 128;
            }
            source.put((byte) value);
        }
    }

    /*
     * Unused. Will be removed in Tomcat 12 onwards.