3 # Copyright (c) Linus Torvalds, 2005
5 # This is the git per-file merge script, called with
7 # $1 - original file SHA1 (or empty)
8 # $2 - file in branch1 SHA1 (or empty)
9 # $3 - file in branch2 SHA1 (or empty)
10 # $4 - pathname in repository
11 # $5 - orignal file mode (or empty)
12 # $6 - file in branch1 mode (or empty)
13 # $7 - file in branch2 mode (or empty)
15 # Handle some trivial cases.. The _really_ trivial cases have
16 # been handled already by git-read-tree, but that one doesn't
17 # do any merges that might change the tree layout.
19 case "${1:-.}${2:-.}${3:-.}" in
21 # Deleted in both or deleted in one and unchanged in the other
23 "$1.." | "$1.$1" | "$1$1.")
28 exec git-update-cache --remove -- "$4"
36 git-update-cache --add --cacheinfo "$6$7" "$2$3" "$4" &&
37 exec git-checkout-cache -u -f -- "$4"
41 # Added in both (check for same permissions).
44 if [ "$6" != "$7" ]; then
45 echo "ERROR: File $4 added identically in both branches,"
46 echo "ERROR: but permissions conflict $6->$7."
50 git-update-cache --add --cacheinfo "$6" "$2" "$4" &&
51 exec git-checkout-cache -u -f -- "$4"
55 # Modified in both, but differently.
58 echo "Auto-merging $4."
59 orig=`git-unpack-file $1`
60 src2=`git-unpack-file $3`
62 # We reset the index to the first branch, making
63 # git-diff-file useful
64 git-update-cache --add --cacheinfo "$6" "$2" "$4"
65 git-checkout-cache -u -f -- "$4" &&
66 merge "$4" "$orig" "$src2"
68 rm -f -- "$orig" "$src2"
70 if [ "$6" != "$7" ]; then
71 echo "ERROR: Permissions conflict: $5->$6,$7."
75 if [ $ret -ne 0 ]; then
76 echo "ERROR: Merge conflict in $4."
79 exec git-update-cache -- "$4"
83 echo "ERROR: $4: Not handling case $1 -> $2 -> $3"