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git/git-resolve-script
Linus Torvalds 220a0b527b More work on merging with git-read-tree..
Add a "-u" flag to update the tree as a result of a merge.

Right now this code is way too anal about things, and fails merges it
shouldn't, but let me fix up the different cases and this will allow for
much smoother merging even in the presense of dirty data in the working
tree.
2005-06-05 22:07:31 -07:00

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#!/bin/sh
#
# Copyright (c) 2005 Linus Torvalds
#
# Resolve two trees.
#
head="$1"
merge="$2"
merge_repo="$3"
: ${GIT_DIR=.git}
: ${GIT_OBJECT_DIRECTORY="${SHA1_FILE_DIRECTORY-"$GIT_DIR/objects"}"}
rm -f "$GIT_DIR"/MERGE_HEAD "$GIT_DIR"/ORIG_HEAD
echo $head > "$GIT_DIR"/ORIG_HEAD
echo $merge > "$GIT_DIR"/MERGE_HEAD
#
# The remote name is just used for the message,
# but we do want it.
#
if [ "$merge_repo" == "" ]; then
echo "git-resolve-script <head> <remote> <merge-repo-name>"
exit 1
fi
common=$(git-merge-base $head $merge)
if [ -z "$common" ]; then
echo "Unable to find common commit between" $merge $head
exit 1
fi
if [ "$common" == "$merge" ]; then
echo "Already up-to-date. Yeeah!"
exit 0
fi
if [ "$common" == "$head" ]; then
echo "Updating from $head to $merge."
echo "Destroying all noncommitted data!"
echo "Kill me within 3 seconds.."
sleep 3
git-read-tree -u -m $head $merge || exit 1
echo $merge > "$GIT_DIR"/HEAD
git-diff-tree -p ORIG_HEAD HEAD | git-apply --stat
exit 0
fi
echo "Trying to merge $merge into $head"
git-read-tree -u -m $common $head $merge || exit 1
merge_msg="Merge of $merge_repo"
result_tree=$(git-write-tree 2> /dev/null)
if [ $? -ne 0 ]; then
echo "Simple merge failed, trying Automatic merge"
git-merge-cache git-merge-one-file-script -a
merge_msg="Automatic merge of $merge_repo"
result_tree=$(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"
echo $result_commit > "$GIT_DIR"/HEAD
git-diff-tree -p ORIG_HEAD HEAD | git-apply --stat