1#!/bin/sh
2dryrun=
3while case "$#" in 0) break ;; esac
4do
5 case "$1" in
6 -n) dryrun=echo ;;
7 --) break ;;
8 -*) echo >&2 "usage: git-prune-script [ -n ] [ heads... ]"; exit 1 ;;
9 *) break ;;
10 esac
11 shift;
12done
13
14# Defaulting to include .git/refs/*/* may be debatable from the
15# purist POV but power users can always give explicit parameters
16# to the script anyway.
17
18case "$#" in
190)
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 ;;
24esac
25
26git-fsck-cache --cache --unreachable "$@" |
27sed -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}