git-prune-script

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