Re: [PATCH v2] rev-list: support human-readable output for `--disk-usage`

["lilinchao@oschina.cn" <lilinchao@oschina.cn>]

>       static int show_disk_usage;
>     @@ builtin/rev-list.c: static int try_bitmap_disk_usage(struct rev_info *revs,
>       int filter_provided_objects)
>       {
>       struct bitmap_index *bitmap_git;
>     -+	struct strbuf bitmap_size_buf = STRBUF_INIT;
>     ++	struct strbuf disk_buf = STRBUF_INIT;
>      +	off_t size_from_bitmap;
In next iteration, will move these two lines to more close to their caller place to
avoid early return.
>      
>       if (!show_disk_usage)
>     @@ builtin/rev-list.c: static int try_bitmap_disk_usage(struct rev_info *revs,
>      -	printf("%"PRIuMAX"\n",
>      -	       (uintmax_t)get_disk_usage_from_bitmap(bitmap_git, revs));
>      +	size_from_bitmap = get_disk_usage_from_bitmap(bitmap_git, revs);
>     -+	if (human_readable) {
>     -+	strbuf_humanise_bytes(&bitmap_size_buf, size_from_bitmap);
>     -+	printf("%s\n", bitmap_size_buf.buf);
>     -+	} else
>     -+	printf("%"PRIuMAX"\n", (uintmax_t)size_from_bitmap);
>     -+	strbuf_release(&bitmap_size_buf);
>     ++	if (human_readable)
>     ++	strbuf_humanise_bytes(&disk_buf, size_from_bitmap);
>     ++	else
>     ++	strbuf_addf(&disk_buf, "%"PRIuMAX"", (uintmax_t)size_from_bitmap);
>     ++	puts(disk_buf.buf);
>     ++	strbuf_release(&disk_buf);
>       return 0;
>       }