| #!/bin/sh |
| # |
| # Copyright (c) 2005 Linus Torvalds |
| # |
| # Resolve two trees. |
| # |
| |
| echo 'WARNING: This command is DEPRECATED and will be removed very soon.' >&2 |
| echo 'WARNING: Please use git-merge or git-pull instead.' >&2 |
| sleep 2 |
| |
| USAGE='<head> <remote> <merge-message>' |
| . git-sh-setup |
| |
| dropheads() { |
| rm -f -- "$GIT_DIR/MERGE_HEAD" \ |
| "$GIT_DIR/LAST_MERGE" || exit 1 |
| } |
| |
| head=$(git rev-parse --verify "$1"^0) && |
| merge=$(git rev-parse --verify "$2"^0) && |
| merge_name="$2" && |
| merge_msg="$3" || usage |
| |
| # |
| # The remote name is just used for the message, |
| # but we do want it. |
| # |
| if [ -z "$head" -o -z "$merge" -o -z "$merge_msg" ]; then |
| usage |
| fi |
| |
| dropheads |
| echo $head > "$GIT_DIR"/ORIG_HEAD |
| echo $merge > "$GIT_DIR"/LAST_MERGE |
| |
| common=$(git merge-base $head $merge) |
| if [ -z "$common" ]; then |
| die "Unable to find common commit between" $merge $head |
| fi |
| |
| case "$common" in |
| "$merge") |
| echo "Already up-to-date. Yeeah!" |
| dropheads |
| exit 0 |
| ;; |
| "$head") |
| echo "Updating $(git rev-parse --short $head)..$(git rev-parse --short $merge)" |
| git read-tree -u -m $head $merge || exit 1 |
| git update-ref -m "resolve $merge_name: Fast-forward" \ |
| HEAD "$merge" "$head" |
| git diff-tree -p $head $merge | git apply --stat |
| dropheads |
| exit 0 |
| ;; |
| esac |
| |
| # We are going to make a new commit. |
| git var GIT_COMMITTER_IDENT >/dev/null || exit |
| |
| # Find an optimum merge base if there are more than one candidates. |
| LF=' |
| ' |
| common=$(git merge-base -a $head $merge) |
| case "$common" in |
| ?*"$LF"?*) |
| echo "Trying to find the optimum merge base." |
| G=.tmp-index$$ |
| best= |
| best_cnt=-1 |
| for c in $common |
| do |
| rm -f $G |
| GIT_INDEX_FILE=$G git read-tree -m $c $head $merge \ |
| 2>/dev/null || continue |
| # Count the paths that are unmerged. |
| cnt=$(GIT_INDEX_FILE=$G git ls-files --unmerged | wc -l) |
| if test $best_cnt -le 0 || test $cnt -le $best_cnt |
| then |
| best=$c |
| best_cnt=$cnt |
| if test "$best_cnt" -eq 0 |
| then |
| # Cannot do any better than all trivial merge. |
| break |
| fi |
| fi |
| done |
| rm -f $G |
| common="$best" |
| esac |
| |
| echo "Trying to merge $merge into $head using $common." |
| git update-index --refresh 2>/dev/null |
| git read-tree -u -m $common $head $merge || exit 1 |
| result_tree=$(git write-tree 2> /dev/null) |
| if [ $? -ne 0 ]; then |
| echo "Simple merge failed, trying Automatic merge" |
| git-merge-index -o git-merge-one-file -a |
| if [ $? -ne 0 ]; then |
| echo $merge > "$GIT_DIR"/MERGE_HEAD |
| die "Automatic merge failed, fix up by hand" |
| fi |
| result_tree=$(git write-tree) || exit 1 |
| fi |
| result_commit=$(echo "$merge_msg" | git commit-tree $result_tree -p $head -p $merge) |
| echo "Committed merge $result_commit" |
| git update-ref -m "resolve $merge_name: In-index merge" \ |
| HEAD "$result_commit" "$head" |
| git diff-tree -p $head $result_commit | git apply --stat |
| dropheads |
