3 # This is the git merge script, called with
5 # $1 - original file SHA1 (or empty)
6 # $2 - file in branch1 SHA1 (or empty)
7 # $3 - file in branch2 SHA1 (or empty)
8 # $4 - pathname in repository
9 # $5 - orignal file mode (or empty)
10 # $6 - file in branch1 mode (or empty)
11 # $7 - file in branch2 mode (or empty)
13 # Handle some trivial cases.. The _really_ trivial cases have
14 # been handled already by git-read-tree, but that one doesn't
15 # do any merges that migth change the tree layout.
17 case "${1:-.}${2:-.}${3:-.}" in
22 echo "WARNING: $4 is removed in both branches."
23 echo "WARNING: This is a potential rename conflict."
24 rm -f -- "$4" || exit 1
25 exec git-update-cache --remove -- "$4" ;;
27 # Deleted in one and unchanged in the other.
29 "$1.." | "$1.$1" | "$1$1.")
31 rm -f -- "$4" || exit 1
32 exec git-update-cache --remove -- "$4" ;;
37 case "$6$7" in *7??) mode=+x;; *) mode=-x;; esac
38 echo "Adding $4 with perm $mode."
39 git-cat-file blob "$2$3" > "$4"
41 exec git-update-cache --add -- "$4" ;;
43 # Added in both (check for same permissions).
46 if [ "$6" != "$7" ]; then
47 echo "ERROR: File $4 added identically in both branches,"
48 echo "ERROR: but permissions conflict $6->$7."
51 case "$6" in *7??) mode=+x;; *) mode=-x;; esac
52 echo "Adding $4 with perm $mode"
53 git-cat-file blob "$2" > "$4"
55 exec git-update-cache --add -- "$4" ;;
57 # Modified in both, but differently.
60 echo "Auto-merging $4."
61 orig=`git-unpack-file $1`
62 src1=`git-unpack-file $2`
63 src2=`git-unpack-file $3`
64 merge -p "$src1" "$orig" "$src2" > "$4"
66 rm -f -- "$orig" "$src1" "$src2"
68 if [ "$6" != "$7" ]; then
69 echo "ERROR: Permissions $5->$6->$7 don't match."
72 case "$6" in *7??) mode=+x;; *) mode=-x;; esac
75 if [ $ret -ne 0 ]; then
76 # Reset the index to the first branch, making
77 # git-diff-file useful
78 git-update-cache --add --cacheinfo "$6" "$2" "$4"
79 echo "ERROR: Merge conflict in $4."
82 exec git-update-cache --add -- "$4" ;;
84 echo "ERROR: Not handling case $4: $1 -> $2 -> $3" ;;