зеркало из https://github.com/microsoft/git.git
104 строки
2.5 KiB
Bash
Executable File
104 строки
2.5 KiB
Bash
Executable File
#!/bin/sh
|
|
#
|
|
# Copyright (c) 2005 Junio C Hamano
|
|
#
|
|
# Resolve two or more trees recorded in $GIT_DIR/FETCH_HEAD.
|
|
#
|
|
. git-sh-setup-script || die "Not a git archive"
|
|
|
|
usage () {
|
|
die "usage: git octopus"
|
|
}
|
|
|
|
# Sanity check the heads early.
|
|
while read SHA1 REPO
|
|
do
|
|
test $(git-cat-file -t $SHA1) = "commit" ||
|
|
die "$REPO given to octopus is not a commit"
|
|
done <"$GIT_DIR/FETCH_HEAD"
|
|
|
|
head=$(git-rev-parse --verify HEAD) || exit
|
|
|
|
git-update-cache --refresh ||
|
|
die "Your working tree is dirty."
|
|
test "$(git-diff-cache --cached "$head")" = "" ||
|
|
die "Your working tree does not match HEAD."
|
|
|
|
# MRC is the current "merge reference commit"
|
|
# MRT is the current "merge result tree"
|
|
|
|
MRC=$head MSG= PARENT="-p $head"
|
|
MRT=$(git-write-tree)
|
|
CNT=1 ;# counting our head
|
|
NON_FF_MERGE=0
|
|
while read SHA1 REPO
|
|
do
|
|
common=$(git-merge-base $MRC $SHA1) ||
|
|
die "Unable to find common commit with $SHA1 from $REPO"
|
|
|
|
if test "$common" = $SHA1
|
|
then
|
|
echo "Already up-to-date: $REPO"
|
|
continue
|
|
fi
|
|
|
|
CNT=`expr $CNT + 1`
|
|
PARENT="$PARENT -p $SHA1"
|
|
MSG="$MSG
|
|
$REPO"
|
|
|
|
if test "$common,$NON_FF_MERGE" = "$MRC,0"
|
|
then
|
|
# The first head being merged was a fast-forward.
|
|
# Advance MRC to the head being merged, and use that
|
|
# tree as the intermediate result of the merge.
|
|
# We still need to count this as part of the parent set.
|
|
|
|
echo "Fast forwarding to: $REPO"
|
|
git-read-tree -u -m $head $SHA1 || exit
|
|
MRC=$SHA1 MRT=$(git-write-tree)
|
|
continue
|
|
fi
|
|
|
|
NON_FF_MERGE=1
|
|
|
|
echo "Trying simple merge with $REPO"
|
|
git-read-tree -u -m $common $MRT $SHA1 || exit
|
|
next=$(git-write-tree 2>/dev/null)
|
|
if test $? -ne 0
|
|
then
|
|
echo "Simple merge did not work, trying automatic merge."
|
|
git-merge-cache -o git-merge-one-file-script -a || {
|
|
git-read-tree --reset "$head"
|
|
git-checkout-cache -f -q -u -a
|
|
die "Automatic merge failed; should not be doing Octopus"
|
|
}
|
|
next=$(git-write-tree 2>/dev/null)
|
|
fi
|
|
MRC=$common
|
|
MRT=$next
|
|
done <"$GIT_DIR/FETCH_HEAD"
|
|
|
|
# Just to be careful in case the user feeds nonsense to us.
|
|
case "$CNT" in
|
|
1)
|
|
echo "No changes."
|
|
exit 0 ;;
|
|
2)
|
|
echo "Not an Octopus; making an ordinary commit."
|
|
MSG="Merge "`expr "$MSG" : '. \(.*\)'` ; # remove LF and TAB
|
|
;;
|
|
*)
|
|
# In an octopus, the original head is just one of the equals,
|
|
# so we should list it as such.
|
|
HEAD_LINK=`readlink "$GIT_DIR/HEAD"`
|
|
MSG="Octopus merge of the following:
|
|
|
|
$HEAD_LINK from .$MSG"
|
|
;;
|
|
esac
|
|
result_commit=$(echo "$MSG" | git-commit-tree $MRT $PARENT)
|
|
echo "Committed merge $result_commit"
|
|
echo $result_commit >"$GIT_DIR"/HEAD
|
|
git-diff-tree -p $head $result_commit | git-apply --stat
|