# Copyright (c) 2005 Junio C Hamano.
#
-USAGE='[--onto <newbase>] <upstream> [<branch>]'
+USAGE='[-v] [--onto <newbase>] <upstream> [<branch>]'
LONG_USAGE='git-rebase replaces <branch> with a new branch of the
same name. When the --onto option is provided the new branch starts
out with a HEAD equal to <newbase>, otherwise it is equal to <upstream>
/ --> /
D---E---F---G master D---E---F---G master
'
+
+SUBDIRECTORY_OK=Yes
. git-sh-setup
+set_reflog_action rebase
+require_work_tree
+cd_to_toplevel
RESOLVEMSG="
When you have resolved this problem run \"git rebase --continue\".
To restore the original branch and stop rebasing run \"git rebase --abort\".
"
unset newbase
+strategy=recursive
+do_merge=
+dotest=$GIT_DIR/.dotest-merge
+prec=4
+verbose=
+git_am_opt=
+
+continue_merge () {
+ test -n "$prev_head" || die "prev_head must be defined"
+ test -d "$dotest" || die "$dotest directory does not exist"
+
+ unmerged=$(git-ls-files -u)
+ if test -n "$unmerged"
+ then
+ echo "You still have unmerged paths in your index"
+ echo "did you forget update-index?"
+ die "$RESOLVEMSG"
+ fi
+
+ if ! git-diff-index --quiet HEAD
+ then
+ if ! git-commit -C "`cat $dotest/current`"
+ then
+ echo "Commit failed, please do not call \"git commit\""
+ echo "directly, but instead do one of the following: "
+ die "$RESOLVEMSG"
+ fi
+ printf "Committed: %0${prec}d" $msgnum
+ else
+ printf "Already applied: %0${prec}d" $msgnum
+ fi
+ echo ' '`git-rev-list --pretty=oneline -1 HEAD | \
+ sed 's/^[a-f0-9]\+ //'`
+
+ prev_head=`git-rev-parse HEAD^0`
+ # save the resulting commit so we can read-tree on it later
+ echo "$prev_head" > "$dotest/prev_head"
+
+ # onto the next patch:
+ msgnum=$(($msgnum + 1))
+ echo "$msgnum" >"$dotest/msgnum"
+}
+
+call_merge () {
+ cmt="$(cat $dotest/cmt.$1)"
+ echo "$cmt" > "$dotest/current"
+ hd=$(git-rev-parse --verify HEAD)
+ cmt_name=$(git-symbolic-ref HEAD)
+ msgnum=$(cat $dotest/msgnum)
+ end=$(cat $dotest/end)
+ eval GITHEAD_$cmt='"${cmt_name##refs/heads/}~$(($end - $msgnum))"'
+ eval GITHEAD_$hd='"$(cat $dotest/onto_name)"'
+ export GITHEAD_$cmt GITHEAD_$hd
+ git-merge-$strategy "$cmt^" -- "$hd" "$cmt"
+ rv=$?
+ case "$rv" in
+ 0)
+ unset GITHEAD_$cmt GITHEAD_$hd
+ return
+ ;;
+ 1)
+ test -d "$GIT_DIR/rr-cache" && git-rerere
+ die "$RESOLVEMSG"
+ ;;
+ 2)
+ echo "Strategy: $rv $strategy failed, try another" 1>&2
+ die "$RESOLVEMSG"
+ ;;
+ *)
+ die "Unknown exit code ($rv) from command:" \
+ "git-merge-$strategy $cmt^ -- HEAD $cmt"
+ ;;
+ esac
+}
+
+finish_rb_merge () {
+ rm -r "$dotest"
+ echo "All done."
+}
+
while case "$#" in 0) break ;; esac
do
case "$1" in
--continue)
- diff=$(git-diff-files)
- case "$diff" in
- ?*) echo "You must edit all merge conflicts and then"
+ git-diff-files --quiet || {
+ echo "You must edit all merge conflicts and then"
echo "mark them as resolved using git update-index"
exit 1
- ;;
- esac
+ }
+ if test -d "$dotest"
+ then
+ prev_head="`cat $dotest/prev_head`"
+ end="`cat $dotest/end`"
+ msgnum="`cat $dotest/msgnum`"
+ onto="`cat $dotest/onto`"
+ continue_merge
+ while test "$msgnum" -le "$end"
+ do
+ call_merge "$msgnum"
+ continue_merge
+ done
+ finish_rb_merge
+ exit
+ fi
git am --resolved --3way --resolvemsg="$RESOLVEMSG"
exit
;;
--skip)
+ if test -d "$dotest"
+ then
+ if test -d "$GIT_DIR/rr-cache"
+ then
+ git-rerere clear
+ fi
+ prev_head="`cat $dotest/prev_head`"
+ end="`cat $dotest/end`"
+ msgnum="`cat $dotest/msgnum`"
+ msgnum=$(($msgnum + 1))
+ onto="`cat $dotest/onto`"
+ while test "$msgnum" -le "$end"
+ do
+ call_merge "$msgnum"
+ continue_merge
+ done
+ finish_rb_merge
+ exit
+ fi
git am -3 --skip --resolvemsg="$RESOLVEMSG"
exit
;;
--abort)
- [ -d .dotest ] || die "No rebase in progress?"
+ if test -d "$GIT_DIR/rr-cache"
+ then
+ git-rerere clear
+ fi
+ if test -d "$dotest"
+ then
+ rm -r "$dotest"
+ elif test -d .dotest
+ then
+ rm -r .dotest
+ else
+ die "No rebase in progress?"
+ fi
git reset --hard ORIG_HEAD
- rm -r .dotest
exit
;;
--onto)
newbase="$2"
shift
;;
+ -M|-m|--m|--me|--mer|--merg|--merge)
+ do_merge=t
+ ;;
+ -s=*|--s=*|--st=*|--str=*|--stra=*|--strat=*|--strate=*|\
+ --strateg=*|--strategy=*|\
+ -s|--s|--st|--str|--stra|--strat|--strate|--strateg|--strategy)
+ case "$#,$1" in
+ *,*=*)
+ strategy=`expr "z$1" : 'z-[^=]*=\(.*\)'` ;;
+ 1,*)
+ usage ;;
+ *)
+ strategy="$2"
+ shift ;;
+ esac
+ do_merge=t
+ ;;
+ -v|--verbose)
+ verbose=t
+ ;;
+ -C*)
+ git_am_opt=$1
+ shift
+ ;;
-*)
usage
;;
done
# Make sure we do not have .dotest
-if mkdir .dotest
+if test -z "$do_merge"
then
- rmdir .dotest
-else
- echo >&2 '
+ if mkdir .dotest
+ then
+ rmdir .dotest
+ else
+ echo >&2 '
It seems that I cannot create a .dotest directory, and I wonder if you
are in the middle of patch application or another rebase. If that is not
the case, please rm -fr .dotest and run me again. I am stopping in case
you still have something valuable there.'
- exit 1
+ exit 1
+ fi
+else
+ if test -d "$dotest"
+ then
+ die "previous dotest directory $dotest still exists." \
+ 'try git-rebase < --continue | --abort >'
+ fi
fi
# The tree must be really really clean.
git-update-index --refresh || exit
diff=$(git-diff-index --cached --name-status -r HEAD)
case "$diff" in
-?*) echo "$diff"
+?*) echo "cannot rebase: your index is not up-to-date"
+ echo "$diff"
exit 1
;;
esac
upstream=`git rev-parse --verify "${upstream_name}^0"` ||
die "invalid upstream $upstream_name"
+# Make sure the branch to rebase onto is valid.
+onto_name=${newbase-"$upstream_name"}
+onto=$(git-rev-parse --verify "${onto_name}^0") || exit
+
# If a hook exists, give it a chance to interrupt
if test -x "$GIT_DIR/hooks/pre-rebase"
then
git-checkout "$2" || usage
;;
*)
- branch_name=`git symbolic-ref HEAD` || die "No current branch"
- branch_name=`expr "z$branch_name" : 'zrefs/heads/\(.*\)'`
+ if branch_name=`git symbolic-ref -q HEAD`
+ then
+ branch_name=`expr "z$branch_name" : 'zrefs/heads/\(.*\)'`
+ else
+ branch_name=HEAD ;# detached
+ fi
;;
esac
branch=$(git-rev-parse --verify "${branch_name}^0") || exit
-# Make sure the branch to rebase onto is valid.
-onto_name=${newbase-"$upstream_name"}
-onto=$(git-rev-parse --verify "${onto_name}^0") || exit
-
# Now we are rebasing commits $upstream..$branch on top of $onto
# Check if we are already based on $onto, but this should be
# done only when upstream and onto are the same.
-if test "$upstream" = "$onto"
+mb=$(git-merge-base "$onto" "$branch")
+if test "$upstream" = "$onto" && test "$mb" = "$onto"
then
- mb=$(git-merge-base "$onto" "$branch")
- if test "$mb" = "$onto"
- then
- echo >&2 "Current branch $branch_name is up to date."
- exit 0
- fi
+ echo >&2 "Current branch $branch_name is up to date."
+ exit 0
+fi
+
+if test -n "$verbose"
+then
+ echo "Changes from $mb to $onto:"
+ git-diff-tree --stat --summary "$mb" "$onto"
fi
# Rewind the head to "$onto"; this saves our current head in ORIG_HEAD.
+echo "First, rewinding head to replay your work on top of it..."
git-reset --hard "$onto"
# If the $onto is a proper descendant of the tip of the branch, then
# we just fast forwarded.
-if test "$mb" = "$onto"
+if test "$mb" = "$branch"
then
- echo >&2 "Fast-forwarded $branch to $newbase."
+ echo >&2 "Fast-forwarded $branch_name to $onto_name."
exit 0
fi
-git-format-patch -k --stdout --full-index "$upstream"..ORIG_HEAD |
-git am --binary -3 -k --resolvemsg="$RESOLVEMSG"
+if test -z "$do_merge"
+then
+ git-format-patch -k --stdout --full-index --ignore-if-in-upstream "$upstream"..ORIG_HEAD |
+ git am $git_am_opt --binary -3 -k --resolvemsg="$RESOLVEMSG"
+ exit $?
+fi
+
+# start doing a rebase with git-merge
+# this is rename-aware if the recursive (default) strategy is used
+
+mkdir -p "$dotest"
+echo "$onto" > "$dotest/onto"
+echo "$onto_name" > "$dotest/onto_name"
+prev_head=`git-rev-parse HEAD^0`
+echo "$prev_head" > "$dotest/prev_head"
+
+msgnum=0
+for cmt in `git-rev-list --no-merges "$upstream"..ORIG_HEAD \
+ | @@PERL@@ -e 'print reverse <>'`
+do
+ msgnum=$(($msgnum + 1))
+ echo "$cmt" > "$dotest/cmt.$msgnum"
+done
+
+echo 1 >"$dotest/msgnum"
+echo $msgnum >"$dotest/end"
+
+end=$msgnum
+msgnum=1
+
+while test "$msgnum" -le "$end"
+do
+ call_merge "$msgnum"
+ continue_merge
+done
+finish_rb_merge