Re: git: how the pack-objects.c find the object's delta

Hi,

I can't say from a first glance. Maybe git@vger can help?

On Sun, Mar 17, 2013 at 10:08 PM, 方栋 [off-list ref] wrote:

hello

i don't understand this:
src in builtin/pack-objects.c  find_deltas() function, line 1800:


static void find_deltas(struct object_entry **list, unsigned *list_size,
            int window, int depth, unsigned *processed)
{
        ......

        /*
         * Move the best delta base up in the window, after the
         * currently deltified object, to keep it longer.  It will
         * be the first base object to be attempted next.
         */
        if (entry->delta) {
            struct unpacked swap = array[best_base];
            int dist = (window + idx - best_base) % window;
            int dst = best_base;
            while (dist--) {
                int src = (dst + 1) % window;
                array[dst] = array[src];
                dst = src;
            }
            array[dst] = swap;
        }
        ......
}

what this code block use for?

thx




------------------
祝好
--方（tyut）

-- 
Duy