X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=git-resolve-script;h=7c0e3d8aa8f7e63d1e98b79612844043a8481011;hb=2d56993347eac4e4f91c0539ff3c5f05fd777495;hp=c04c0307b2b7c2b83c7707c90b844aa958a6c407;hpb=67cc5c4ef8b84961946e58bfb896c11b7fd33cc7;p=git.git diff --git a/git-resolve-script b/git-resolve-script old mode 100644 new mode 100755 index c04c0307..7c0e3d8a --- a/git-resolve-script +++ b/git-resolve-script @@ -1,56 +1,102 @@ #!/bin/sh # +# Copyright (c) 2005 Linus Torvalds +# # Resolve two trees. # -head="$1" -merge="$2" -merge_repo="$3" +. git-sh-setup-script || die "Not a git archive" + +usage () { + die "git-resolve-script " +} + +dropheads() { + rm -f -- "$GIT_DIR/MERGE_HEAD" \ + "$GIT_DIR/LAST_MERGE" || exit 1 +} -rm -f .git/MERGE_HEAD .git/ORIG_HEAD -echo $head > .git/ORIG_HEAD -echo $merge > .git/MERGE_HEAD +head=$(git-rev-parse --verify "$1"^0) && +merge=$(git-rev-parse --verify "$2"^0) && +merge_msg="$3" || usage # # The remote name is just used for the message, # but we do want it. # -if [ "$merge_repo" == "" ]; then - echo "git-resolve-script " - exit 1 +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 - echo "Unable to find common commit between" $merge $head - exit 1 + die "Unable to find common commit between" $merge $head fi if [ "$common" == "$merge" ]; then echo "Already up-to-date. Yeeah!" + dropheads exit 0 fi if [ "$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 -m $merge && git-checkout-cache -f -a && git-update-cache --refresh - echo $merge > .git/HEAD - git-diff-tree -p ORIG_HEAD HEAD | diffstat -p1 + git-read-tree -u -m $head $merge || exit 1 + echo $merge > "$GIT_DIR"/HEAD + git-diff-tree -p $head $merge | git-apply --stat + dropheads exit 0 fi -echo "Trying to merge $merge into $head" -git-read-tree -m $common $head $merge -merge_msg="Merge of $merge_repo" + +# Find an optimum merge base if there are more than one candidates. +LF=' +' +common=$(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-cache --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-cache git-merge-one-file-script -a - merge_msg="Automatic merge of $merge_repo" + git-merge-cache -o git-merge-one-file-script -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 $merge_head) +result_commit=$(echo "$merge_msg" | git-commit-tree $result_tree -p $head -p $merge) echo "Committed merge $result_commit" -echo $result_commit > .git/HEAD -git-checkout-cache -f -a && git-update-cache --refresh -git-diff-tree -p ORIG_HEAD HEAD | diffstat -p1 +echo $result_commit > "$GIT_DIR"/HEAD +git-diff-tree -p $head $result_commit | git-apply --stat +dropheads