1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
#!/bin/sh
#
# Copyright (c) 2005 Junio C Hamano
#
# Resolve two or more trees.
#
LF='
'
die () {
echo >&2 "$*"
exit 1
}
# The first parameters up to -- are merge bases; the rest are heads.
bases= head= remotes= sep_seen=
for arg
do
case ",$sep_seen,$head,$arg," in
*,--,)
sep_seen=yes
;;
,yes,,*)
head=$arg
;;
,yes,*)
remotes="$remotes$arg "
;;
*)
bases="$bases$arg "
;;
esac
done
# Reject if this is not an Octopus -- resolve should be used instead.
case "$remotes" in
?*' '?*)
;;
*)
exit 2 ;;
esac
# 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
OCTOPUS_FAILURE=0
for SHA1 in $remotes
do
case "$OCTOPUS_FAILURE" in
1)
# We allow only last one to have a hand-resolvable
# conflicts. Last round failed and we still had
# a head to merge.
echo "Automated merge did not work."
echo "Should not be doing an Octopus."
exit 2
esac
common=$(git merge-base --all $SHA1 $MRC) ||
die "Unable to find common commit with $SHA1"
case "$LF$common$LF" in
*"$LF$SHA1$LF"*)
echo "Already up-to-date with $SHA1"
continue
;;
esac
CNT=`expr $CNT + 1`
PARENT="$PARENT -p $SHA1"
if test "$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: $SHA1"
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 $SHA1"
git read-tree -u -m --aggressive $common $MRT $SHA1 || exit 2
next=$(git write-tree 2>/dev/null)
if test $? -ne 0
then
echo "Simple merge did not work, trying automatic merge."
git-merge-index -o git-merge-one-file -a ||
OCTOPUS_FAILURE=1
next=$(git write-tree 2>/dev/null)
fi
MRC="$MRC $SHA1"
MRT=$next
done
exit "$OCTOPUS_FAILURE"
|
