#!/bin/sh
- REFS=$(cat .git/refs/*/*)
- [ "$REFS" ] || exit 1
- git-fsck-cache --unreachable $REFS | grep unreachable | cut -d' ' -f3 | sed 's:^\(..\):.git/objects/\1/:' | xargs -r rm
-
+ dryrun=
+ while case "$#" in 0) break ;; esac
+ do
+ case "$1" in
+ -n) dryrun=echo ;;
+ --) break ;;
+ -*) echo >&2 "usage: git-prune-script [ -n ] [ heads... ]"; exit 1 ;;
+ *) break ;;
+ esac
+ shift;
+ done
+
+ # Defaulting to include .git/refs/*/* may be debatable from the
+ # purist POV but power users can always give explicit parameters
+ # to the script anyway.
+
+ case "$#" in
+ 0)
+ x_40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
+ x_40="$x_40$x_40$x_40$x_40$x_40$x_40$x_40$x_40"
+ set x $(sed -ne "/^$x_40\$/p" .git/HEAD .git/refs/*/* 2>/dev/null)
+ shift ;;
+ esac
+
+ git-fsck-cache --cache --unreachable "$@" |
+ sed -ne '/unreachable /{
+ s/unreachable [^ ][^ ]* //
+ s|\(..\)|\1/|p
+ }' | {
+ case "$SHA1_FILE_DIRECTORY" in
+ '') cd .git/objects/ ;;
+ *) cd "$SHA1_FILE_DIRECTORY" ;;
+ esac || exit
+ xargs -r $dryrun rm -f
+ }