1#!/bin/sh
2#
3# Copyright (c) 2005 Junio C Hamano.
4#
5
6. git-sh-setup-script || die "Not a git archive."
7
8usage="usage: $0 "'<upstream> [<head>]
9
10Uses output from git-cherry to rebase local commits to the new head of
11upstream tree.'
12
13case "$#,$1" in
141,*..*)
15 upstream=$(expr "$1" : '\(.*\)\.\.') ours=$(expr "$1" : '.*\.\.\(.*\)$')
16 set x "$upstream" "$ours"
17 shift ;;
18esac
19
20git-update-cache --refresh || exit
21
22case "$#" in
231) ours_symbolic=HEAD ;;
242) ours_symbolic="$2" ;;
25*) die "$usage" ;;
26esac
27
28upstream=`git-rev-parse --verify "$1"` &&
29ours=`git-rev-parse --verify "$ours_symbolic"` || exit
30different1=$(git-diff-cache --name-only --cached "$ours") &&
31different2=$(git-diff-cache --name-only "$ours") &&
32test "$different1$different2" = "" ||
33die "Your working tree does not match $ours_symbolic."
34
35git-read-tree -m -u $ours $upstream &&
36git-rev-parse --verify "$upstream^0" >"$GIT_DIR/HEAD" || exit
37
38tmp=.rebase-tmp$$
39fail=$tmp-fail
40trap "rm -rf $tmp-*" 0 1 2 3 15
41
42>$fail
43
44git-cherry $upstream $ours |
45while read sign commit
46do
47 case "$sign" in
48 -) continue ;;
49 esac
50 S=`cat "$GIT_DIR/HEAD"` &&
51 GIT_EXTERNAL_DIFF=git-apply-patch-script git-diff-tree -p $commit &&
52 git-commit-script -C "$commit" || {
53 echo $commit >>$fail
54 git-read-tree --reset -u $S
55 }
56done
57if test -s $fail
58then
59 echo Some commits could not be rebased, check by hand:
60 cat $fail
61fi