mirror of
https://github.com/git/git.git
synced 2024-10-30 13:57:54 +01:00
bf7960eb51
This uses the git-update-ref command in scripts for safer updates. Also places where we used to read HEAD ref by using "cat" were fixed to use git-rev-parse. This will matter when we start using symbolic references. Signed-off-by: Junio C Hamano <junkio@cox.net>
104 lines
2.3 KiB
Bash
Executable file
104 lines
2.3 KiB
Bash
Executable file
#!/bin/sh
|
|
#
|
|
# Copyright (c) 2005 Linus Torvalds
|
|
#
|
|
# Resolve two trees.
|
|
#
|
|
. git-sh-setup || die "Not a git archive"
|
|
|
|
usage () {
|
|
die "git-resolve <head> <remote> <merge-message>"
|
|
}
|
|
|
|
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_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 from $head to $merge."
|
|
git-read-tree -u -m $head $merge || exit 1
|
|
git-update-ref HEAD "$merge" "$head"
|
|
git-diff-tree -p $head $merge | git-apply --stat
|
|
dropheads
|
|
exit 0
|
|
;;
|
|
esac
|
|
|
|
# Find an optimum merge base if there are more than one candidates.
|
|
LF='
|
|
'
|
|
common=$(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 -o $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 $result_commit"
|
|
git-update-ref HEAD "$result_commit" "$head"
|
|
git-diff-tree -p $head $result_commit | git-apply --stat
|
|
dropheads
|