ls-tree: --name-only
[git/git.git] / git-merge-one-file.sh
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1#!/bin/sh
2#
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3# Copyright (c) Linus Torvalds, 2005
4#
5# This is the git per-file merge script, called with
839a7a06 6#
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7# $1 - original file SHA1 (or empty)
8# $2 - file in branch1 SHA1 (or empty)
9# $3 - file in branch2 SHA1 (or empty)
839a7a06 10# $4 - pathname in repository
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11# $5 - orignal file mode (or empty)
12# $6 - file in branch1 mode (or empty)
13# $7 - file in branch2 mode (or empty)
839a7a06 14#
e3b4be7f 15# Handle some trivial cases.. The _really_ trivial cases have
0fc65a45 16# been handled already by git-read-tree, but that one doesn't
ec73962d 17# do any merges that might change the tree layout.
0a9ea850 18
e3b4be7f 19case "${1:-.}${2:-.}${3:-.}" in
839a7a06 20#
98a96b00 21# Deleted in both or deleted in one and unchanged in the other
839a7a06 22#
98a96b00 23"$1.." | "$1.$1" | "$1$1.")
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24 if [ "$2" ]; then
25 echo "Removing $4"
26 fi
0b124bb4 27 if test -f "$4"; then
397c7669 28 rm -f -- "$4" &&
9ae2172a 29 rmdir -p "$(expr "$4" : '\(.*\)/')" 2>/dev/null
aacc15ec 30 fi &&
215a7ad1 31 exec git-update-index --remove -- "$4"
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32 ;;
33
839a7a06 34#
ee28152d 35# Added in one.
839a7a06 36#
e2b6a9d0 37".$2." | "..$3" )
98a96b00 38 echo "Adding $4"
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39 git-update-index --add --cacheinfo "$6$7" "$2$3" "$4" &&
40 exec git-checkout-index -u -f -- "$4"
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41 ;;
42
e2b6a9d0 43#
f7d24bbe 44# Added in both, identically (check for same permissions).
e2b6a9d0 45#
ee28152d 46".$3$2")
e2b6a9d0 47 if [ "$6" != "$7" ]; then
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48 echo "ERROR: File $4 added identically in both branches,"
49 echo "ERROR: but permissions conflict $6->$7."
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50 exit 1
51 fi
98a96b00 52 echo "Adding $4"
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53 git-update-index --add --cacheinfo "$6" "$2" "$4" &&
54 exec git-checkout-index -u -f -- "$4"
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55 ;;
56
e3b4be7f 57#
ee28152d 58# Modified in both, but differently.
e3b4be7f 59#
f7d24bbe 60"$1$2$3" | ".$2$3")
cb93c193 61 src2=`git-unpack-file $3`
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62 case "$1" in
63 '')
64 echo "Added $4 in both, but differently."
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65 # This extracts OUR file in $orig, and uses git-apply to
66 # remove lines that are unique to ours.
f7d24bbe 67 orig=`git-unpack-file $2`
fd66dbf5 68 sz0=`wc -c <"$orig"`
cb93c193 69 diff -u -La/$orig -Lb/$orig $orig $src2 | git-apply --no-add
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70 sz1=`wc -c <"$orig"`
71
72 # If we do not have enough common material, it is not
73 # worth trying two-file merge using common subsections.
74 expr "$sz0" \< "$sz1" \* 2 >/dev/null || : >$orig
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75 ;;
76 *)
77 echo "Auto-merging $4."
78 orig=`git-unpack-file $1`
79 ;;
80 esac
ec73962d 81
354b9b59 82 merge "$4" "$orig" "$src2"
e2b6a9d0 83 ret=$?
98a96b00 84 rm -f -- "$orig" "$src2"
8544a6f1 85
e2b6a9d0 86 if [ "$6" != "$7" ]; then
ec73962d 87 echo "ERROR: Permissions conflict: $5->$6,$7."
2a68a865 88 ret=1
e2b6a9d0 89 fi
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90 if [ "$1" = '' ]; then
91 ret=1
92 fi
8544a6f1 93
e2b6a9d0 94 if [ $ret -ne 0 ]; then
2a68a865 95 echo "ERROR: Merge conflict in $4."
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96 exit 1
97 fi
215a7ad1 98 exec git-update-index -- "$4"
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99 ;;
100
e3b4be7f 101*)
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102 echo "ERROR: $4: Not handling case $1 -> $2 -> $3"
103 ;;
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104esac
105exit 1