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102 lines
2.4 KiB
102 lines
2.4 KiB
#!/bin/sh |
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# |
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# Copyright (c) 2005 Linus Torvalds |
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# |
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# Resolve two trees. |
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# |
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. git-sh-setup-script || die "Not a git archive" |
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usage () { |
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die "git-resolve-script <head> <remote> <merge-message>" |
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} |
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dropheads() { |
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rm -f -- "$GIT_DIR/MERGE_HEAD" \ |
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"$GIT_DIR/LAST_MERGE" || exit 1 |
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} |
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head=$(git-rev-parse --verify "$1"^0) && |
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merge=$(git-rev-parse --verify "$2"^0) && |
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merge_msg="$3" || usage |
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# |
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# The remote name is just used for the message, |
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# but we do want it. |
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# |
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if [ -z "$head" -o -z "$merge" -o -z "$merge_msg" ]; then |
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usage |
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fi |
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dropheads |
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echo $head > "$GIT_DIR"/ORIG_HEAD |
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echo $merge > "$GIT_DIR"/LAST_MERGE |
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common=$(git-merge-base $head $merge) |
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if [ -z "$common" ]; then |
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die "Unable to find common commit between" $merge $head |
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fi |
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if [ "$common" == "$merge" ]; then |
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echo "Already up-to-date. Yeeah!" |
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dropheads |
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exit 0 |
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fi |
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if [ "$common" == "$head" ]; then |
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echo "Updating from $head to $merge." |
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git-read-tree -u -m $head $merge || exit 1 |
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echo $merge > "$GIT_DIR"/HEAD |
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git-diff-tree -p $head $merge | git-apply --stat |
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dropheads |
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exit 0 |
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fi |
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# Find an optimum merge base if there are more than one candidates. |
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LF=' |
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' |
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common=$(git-merge-base -a $head $merge) |
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case "$common" in |
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?*"$LF"?*) |
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echo "Trying to find the optimum merge base." |
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G=.tmp-index$$ |
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best= |
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best_cnt=-1 |
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for c in $common |
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do |
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rm -f $G |
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GIT_INDEX_FILE=$G git-read-tree -m $c $head $merge \ |
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2>/dev/null || continue |
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# Count the paths that are unmerged. |
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cnt=`GIT_INDEX_FILE=$G git-ls-files --unmerged | wc -l` |
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if test $best_cnt -le 0 -o $cnt -le $best_cnt |
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then |
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best=$c |
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best_cnt=$cnt |
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if test "$best_cnt" -eq 0 |
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then |
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# Cannot do any better than all trivial merge. |
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break |
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fi |
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fi |
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done |
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rm -f $G |
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common="$best" |
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esac |
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echo "Trying to merge $merge into $head using $common." |
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git-update-cache --refresh 2>/dev/null |
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git-read-tree -u -m $common $head $merge || exit 1 |
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result_tree=$(git-write-tree 2> /dev/null) |
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if [ $? -ne 0 ]; then |
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echo "Simple merge failed, trying Automatic merge" |
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git-merge-cache -o git-merge-one-file-script -a |
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if [ $? -ne 0 ]; then |
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echo $merge > "$GIT_DIR"/MERGE_HEAD |
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die "Automatic merge failed, fix up by hand" |
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fi |
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result_tree=$(git-write-tree) || exit 1 |
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fi |
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result_commit=$(echo "$merge_msg" | git-commit-tree $result_tree -p $head -p $merge) |
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echo "Committed merge $result_commit" |
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echo $result_commit > "$GIT_DIR"/HEAD |
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git-diff-tree -p $head $result_commit | git-apply --stat |
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dropheads
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