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 : ${GIT_DIR=.git}
  15 : ${GIT_OBJECT_DIRECTORY="${SHA1_FILE_DIRECTORY-"$GIT_DIR/objects"}"}
  16
  17 # Defaulting to include .git/refs/*/* may be debatable from the
  18 # purist POV but power users can always give explicit parameters
  19 # to the script anyway.
  20
  21 case "$#" in
  22 0)
  23     x_40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
  24     x_40="$x_40$x_40$x_40$x_40$x_40$x_40$x_40$x_40"
  25     set x $(sed -ne "/^$x_40\$/p" \
  26         "$GIT_DIR"/HEAD "$GIT_DIR"/refs/*/* /dev/null 2>/dev/null)
  27     shift ;;
  28 esac
  29
  30 git-fsck-cache --cache --unreachable "$@" |
  31 sed -ne '/unreachable /{
  32     s/unreachable [^ ][^ ]* //
  33     s|\(..\)|\1/|p
  34 }' | {
  35         cd "$GIT_OBJECT_DIRECTORY" || exit
  36         xargs -r $dryrun rm -f
  37 }
  38