rebase: extract merge code to new source file
Extract the code for merge-based rebase to git-rebase--merge.sh.
Suggested-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/git-rebase--merge.sh b/git-rebase--merge.sh
new file mode 100644
index 0000000..c04ce8a
--- /dev/null
+++ b/git-rebase--merge.sh
@@ -0,0 +1,154 @@
+#!/bin/sh
+#
+# Copyright (c) 2010 Junio C Hamano.
+#
+
+. git-sh-setup
+
+prec=4
+
+read_state () {
+ onto_name=$(cat "$state_dir"/onto_name) &&
+ end=$(cat "$state_dir"/end) &&
+ msgnum=$(cat "$state_dir"/msgnum)
+}
+
+continue_merge () {
+ test -d "$state_dir" || die "$state_dir 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 to use git add?"
+ die "$resolvemsg"
+ fi
+
+ cmt=`cat "$state_dir/current"`
+ if ! git diff-index --quiet --ignore-submodules HEAD --
+ then
+ if ! git commit --no-verify -C "$cmt"
+ then
+ echo "Commit failed, please do not call \"git commit\""
+ echo "directly, but instead do one of the following: "
+ die "$resolvemsg"
+ fi
+ if test -z "$GIT_QUIET"
+ then
+ printf "Committed: %0${prec}d " $msgnum
+ fi
+ echo "$cmt $(git rev-parse HEAD^0)" >> "$state_dir/rewritten"
+ else
+ if test -z "$GIT_QUIET"
+ then
+ printf "Already applied: %0${prec}d " $msgnum
+ fi
+ fi
+ test -z "$GIT_QUIET" &&
+ GIT_PAGER='' git log --format=%s -1 "$cmt"
+
+ # onto the next patch:
+ msgnum=$(($msgnum + 1))
+ echo "$msgnum" >"$state_dir/msgnum"
+}
+
+call_merge () {
+ cmt="$(cat "$state_dir/cmt.$1")"
+ echo "$cmt" > "$state_dir/current"
+ hd=$(git rev-parse --verify HEAD)
+ cmt_name=$(git symbolic-ref HEAD 2> /dev/null || echo HEAD)
+ msgnum=$(cat "$state_dir/msgnum")
+ eval GITHEAD_$cmt='"${cmt_name##refs/heads/}~$(($end - $msgnum))"'
+ eval GITHEAD_$hd='$onto_name'
+ export GITHEAD_$cmt GITHEAD_$hd
+ if test -n "$GIT_QUIET"
+ then
+ GIT_MERGE_VERBOSITY=1 && export GIT_MERGE_VERBOSITY
+ fi
+ test -z "$strategy" && strategy=recursive
+ eval 'git-merge-$strategy' $strategy_opts '"$cmt^" -- "$hd" "$cmt"'
+ rv=$?
+ case "$rv" in
+ 0)
+ unset GITHEAD_$cmt GITHEAD_$hd
+ return
+ ;;
+ 1)
+ git rerere $allow_rerere_autoupdate
+ die "$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 $cmt"
+ ;;
+ esac
+}
+
+finish_rb_merge () {
+ move_to_original_branch
+ git notes copy --for-rewrite=rebase < "$state_dir"/rewritten
+ if test -x "$GIT_DIR"/hooks/post-rewrite &&
+ test -s "$state_dir"/rewritten; then
+ "$GIT_DIR"/hooks/post-rewrite rebase < "$state_dir"/rewritten
+ fi
+ rm -r "$state_dir"
+ say All done.
+}
+
+case "$action" in
+continue)
+ read_state
+ continue_merge
+ while test "$msgnum" -le "$end"
+ do
+ call_merge "$msgnum"
+ continue_merge
+ done
+ finish_rb_merge
+ exit
+ ;;
+skip)
+ read_state
+ git rerere clear
+ msgnum=$(($msgnum + 1))
+ while test "$msgnum" -le "$end"
+ do
+ call_merge "$msgnum"
+ continue_merge
+ done
+ finish_rb_merge
+ exit
+ ;;
+esac
+
+mkdir -p "$state_dir"
+echo "$onto_name" > "$state_dir/onto_name"
+echo "$head_name" > "$state_dir/head-name"
+echo "$onto" > "$state_dir/onto"
+echo "$orig_head" > "$state_dir/orig-head"
+echo "$GIT_QUIET" > "$state_dir/quiet"
+
+msgnum=0
+for cmt in `git rev-list --reverse --no-merges "$revisions"`
+do
+ msgnum=$(($msgnum + 1))
+ echo "$cmt" > "$state_dir/cmt.$msgnum"
+done
+
+echo 1 >"$state_dir/msgnum"
+echo $msgnum >"$state_dir/end"
+
+end=$msgnum
+msgnum=1
+
+while test "$msgnum" -le "$end"
+do
+ call_merge "$msgnum"
+ continue_merge
+done
+
+finish_rb_merge
