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 - original file mode (or empty)
12 # $6 - file in branch1 mode (or empty)
13 # $7 - file in branch2 mode (or empty)
15 # Handle some trivial cases.. The _really_ trivial cases have
16 # been handled already by git read-tree, but that one doesn't
17 # do any merges that might change the tree layout.
19 USAGE
='<orig blob> <our blob> <their blob> <path>'
20 USAGE
="$USAGE <orig mode> <our mode> <their mode>"
21 LONG_USAGE
="usage: git merge-one-file $USAGE
23 Blob ids and modes should be empty for missing files."
36 case "${1:-.}${2:-.}${3:-.}" in
38 # Deleted in both or deleted in one and unchanged in the other
40 "$1.." |
"$1.$1" |
"$1$1.")
45 # read-tree checked that index matches HEAD already,
46 # so we know we do not have this path tracked.
47 # there may be an unrelated working tree file here,
48 # which we should just leave unmolested. Make sure
49 # we do not have it in the index, though.
50 exec git update-index
--remove -- "$4"
55 rmdir -p "$(expr "z
$4" : 'z\(.*\)/')" 2>/dev
/null ||
:
57 exec git update-index
--remove -- "$4"
64 # the other side did not add and we added so there is nothing
65 # to be done, except making the path merged.
66 exec git update-index
--add --cacheinfo "$6" "$2" "$4"
72 echo "ERROR: untracked $4 is overwritten by the merge." >&2
75 git update-index
--add --cacheinfo "$7" "$3" "$4" &&
76 exec git checkout-index
-u -f -- "$4"
80 # Added in both, identically (check for same permissions).
85 echo "ERROR: File $4 added identically in both branches," >&2
86 echo "ERROR: but permissions conflict $6->$7." >&2
90 git update-index
--add --cacheinfo "$6" "$2" "$4" &&
91 exec git checkout-index
-u -f -- "$4"
95 # Modified in both, but differently.
101 echo "ERROR: $4: Not merging symbolic link changes." >&2
105 echo "ERROR: $4: Not merging conflicting submodule changes." >&2
110 src1
=$
(git-unpack-file
$2)
111 src2
=$
(git-unpack-file
$3)
114 echo "Added $4 in both, but differently."
115 orig
=$
(git-unpack-file
$2)
116 create_virtual_base
"$orig" "$src2"
119 echo "Auto-merging $4"
120 orig
=$
(git-unpack-file
$1)
124 git merge-file
"$src1" "$orig" "$src2"
127 if test $ret != 0 ||
test -z "$1"
129 msg
='content conflict'
133 # Create the working tree file, using "our tree" version from the
134 # index, and then store the result of the merge.
135 git checkout-index
-f --stage=2 -- "$4" && cat "$src1" >"$4" ||
exit 1
136 rm -f -- "$orig" "$src1" "$src2"
144 msg
="${msg}permissions conflict: $5->$6,$7"
150 echo "ERROR: $msg in $4" >&2
153 exec git update-index
-- "$4"
157 echo "ERROR: $4: Not handling case $1 -> $2 -> $3" >&2