package/editors/nvi/dbpagesize-binpower.patch

   1 This patch originates from the Debian project, see https://www.debian.org/
   2
   3 18dbpagesize_binpower.dpatch by  <hesso@pool.math.tu-berlin.de>
   4
   5
   6 Make sure that the pagesize passed to db__set_pagesize() is a power of two.
   7
   8 nvi stores the content of files in BDB database structures. When initiating a
   9 file, it picks a page size for the database to fit the file within 15 pages,
  10 with a minimal page size of 1K and maximal of 10K.
  11
  12 In vanilla nvi, this size is calculated as a multiple of 1024. Modern versions
  13 of BDB, however, require the page size of a database to be a power of two, which
  14 this patch addresses, ridding us of the following message:
  15
  16   BDB0511 page sizes must be a power-of-2
  17
  18 --- nvi-1.81.6.orig/common/exf.c        2009-03-09 01:48:01.695862889 +0100
  19 +++ nvi-1.81.6/common/exf.c     2009-03-09 10:42:41.147866272 +0100
  20 @@ -249,11 +249,10 @@
  21                  * (vi should have good locality) or smaller than 1K.
  22                  */
  23                 psize = ((sb.st_size / 15) + 1023) / 1024;
  24 -               if (psize > 10)
  25 -                       psize = 10;
  26 -               if (psize == 0)
  27 -                       psize = 1;
  28 -               psize *= 1024;
  29 +               if (psize >= 8) psize=8<<10;
  30 +               else if (psize >= 4) psize=4<<10;
  31 +               else if (psize >= 2) psize=2<<10;
  32 +               else psize=1<<10;
  33
  34                 F_SET(ep, F_DEVSET);
  35                 ep->mdev = sb.st_dev;