git-prune-script

   1 #!/bin/sh
   2
   3 dryrun=
   4 while case "$#" in 0) break ;; esac
   5 do
   6     case "$1" in
   7     -n) dryrun=echo ;;
   8     --) break ;;
   9     -*) echo >&2 "usage: git-prune-script [ -n ] [ heads... ]"; exit 1 ;;
  10     *)  break ;;
  11     esac
  12     shift;
  13 done
  14
  15 # Defaulting to include .git/refs/*/* may be debatable from the
  16 # purist POV but power users can always give explicit parameters
  17 # to the script anyway.
  18
  19 case "$#" in
  20 0)
  21     x_40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
  22     x_40="$x_40$x_40$x_40$x_40$x_40$x_40$x_40$x_40"
  23     set x $(sed -ne "/^$x_40\$/p" .git/HEAD .git/refs/*/* 2>/dev/null)
  24     shift ;;
  25 esac
  26
  27 git-fsck-cache --cache --unreachable "$@" |
  28 sed -ne '/unreachable /{
  29     s/unreachable [^ ][^ ]* //
  30     s|\(..\)|\1/|p
  31 }' | {
  32         case "$SHA1_FILE_DIRECTORY" in
  33         '') cd .git/objects/ ;;
  34         *) cd "$SHA1_FILE_DIRECTORY" ;;
  35         esac || exit
  36         xargs -r $dryrun rm -f
  37 }