Method makeSpace

java/org/apache/tomcat/util/buf/ByteChunk.java:556–596

Make space for len bytes. If len is small, allocate a reserve space too. Never grow bigger than the limit or AbstractChunk#ARRAY_MAX_SIZE. @param count The size

(int count)

     * @param count The size
     */
    public void makeSpace(int count) {
        int limit = getLimitInternal();

        long newSize;
        long desiredSize = end + count;

        // Can't grow above the limit
        if (desiredSize > limit) {
            desiredSize = limit;
        }

        if (buff == null) {
            if (desiredSize < 256) {
                desiredSize = 256; // take a minimum
            }
            buff = new byte[(int) desiredSize];
        }

        // limit < buf.length (the buffer is already big)
        // or we already have space
        if (desiredSize <= buff.length) {
            return;
        }
        // grow in larger chunks
        if (desiredSize < 2L * buff.length) {
            newSize = buff.length * 2L;
        } else {
            newSize = buff.length * 2L + count;
        }

        if (newSize > limit) {
            newSize = limit;
        }
        byte[] tmp = new byte[(int) newSize];

        // Compacts buffer
        System.arraycopy(buff, start, tmp, 0, end - start);
        buff = tmp;
        end = end - start;
        start = 0;
    }


    // -------------------- Conversion and getters --------------------