git/git-rebase-script

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#!/bin/sh
#
# Copyright (c) 2005 Junio C Hamano.
#
. git-sh-setup-script || die "Not a git archive."
usage="usage: $0 "'<upstream> [<head>]
Uses output from git-cherry to rebase local commits to the new head of
upstream tree.'
case "$#,$1" in
1,*..*)
upstream=$(expr "$1" : '\(.*\)\.\.') ours=$(expr "$1" : '.*\.\.\(.*\)$')
set x "$upstream" "$ours"
shift ;;
esac
git-update-cache --refresh || exit
case "$#" in
1) ours_symbolic=HEAD ;;
2) ours_symbolic="$2" ;;
*) die "$usage" ;;
esac
upstream=`git-rev-parse --verify "$1"` &&
ours=`git-rev-parse --verify "$ours_symbolic"` || exit
different1=$(git-diff-cache --name-only --cached "$ours") &&
different2=$(git-diff-cache --name-only "$ours") &&
test "$different1$different2" = "" ||
die "Your working tree does not match $ours_symbolic."
git-read-tree -m -u $ours $upstream &&
git-rev-parse --verify "$upstream^0" >"$GIT_DIR/HEAD" || exit
tmp=.rebase-tmp$$
fail=$tmp-fail
trap "rm -rf $tmp-*" 1 2 3 15
>$fail
git-cherry -v $upstream $ours |
while read sign commit msg
do
case "$sign" in
-)
echo >&2 "* Already applied: $msg"
continue ;;
esac
echo >&2 "* Applying: $msg"
S=`cat "$GIT_DIR/HEAD"` &&
git-cherry-pick-script --replay $commit || {
echo >&2 "* Not applying the patch and continuing."
echo $commit >>$fail
git-reset-script --hard $S
}
done
if test -s $fail
then
echo >&2 Some commits could not be rebased, check by hand:
cat >&2 $fail
echo >&2 "(the same list of commits are found in $tmp)"
exit 1
else
rm -f $fail
fi