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" "$ours"
17 shift ;;
18esac
19
20case "$#" in
211) upstream=`git-rev-parse --verify "$1"` &&
22 ours=`git-rev-parse --verify HEAD` || exit
23 ;;
242) upstream=`git-rev-parse --verify "$1"` &&
25 ours=`git-rev-parse --verify "$2"` || exit
26 ;;
27*) echo >&2 "$usage"; exit 1 ;;
28esac
29
30git-read-tree -m -u $ours $upstream &&
31git-rev-parse --verify "$upstream^0" >"$GIT_DIR/HEAD" || exit
32
33tmp=.rebase-tmp$$
34fail=$tmp-fail
35trap "rm -rf $tmp-*" 0 1 2 3 15
36
37>$fail
38
39git-cherry $upstream $ours |
40while read sign commit
41do
42 case "$sign" in
43 -) continue ;;
44 esac
45 S=`cat "$GIT_DIR/HEAD"` &&
46 GIT_EXTERNAL_DIFF=git-apply-patch-script git-diff-tree -p $commit &&
47 git-commit-script -C "$commit" || {
48 echo $commit >>$fail
49 git-read-tree --reset -u $S
50 }
51done
52if test -s $fail
53then
54 echo Some commits could not be rebased, check by hand:
55 cat $fail
56fi