92 lines
1.9 KiB
Bash
Executable File
92 lines
1.9 KiB
Bash
Executable File
#!/bin/sh
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#
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# This is the git merge script, called with
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#
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# $1 - original file SHA1 (or empty)
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# $2 - file in branch1 SHA1 (or empty)
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# $3 - file in branch2 SHA1 (or empty)
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# $4 - pathname in repository
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#
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#
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# Handle some trivial cases.. The _really_ trivial cases have
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# been handled already by read-tree, but that one doesn't
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# do any merges that migth change the tree layout
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#
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# if the directory is newly added in a branch, it might not exist
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# in the current tree
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dir=$(dirname "$4")
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mkdir -p "$dir"
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case "${1:-.}${2:-.}${3:-.}" in
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#
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# deleted in both
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#
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"$1..")
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echo "ERROR: $4 is removed in both branches"
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echo "ERROR: This is a potential rename conflict"
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exit 1;;
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#
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# deleted in one and unchanged in the other
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#
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"$1.." | "$1.$1" | "$1$1.")
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rm -f -- "$4"
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echo "Removing $4"
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git-update-cache --remove -- "$4"
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exit 0
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;;
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#
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# added in one
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#
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".$2." | "..$3" )
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echo "Adding $4 with perm $6$7"
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mv $(unpack-file "$2$3") $4
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chmod "$6$7" $4
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git-update-cache --add -- $4
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exit 0
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;;
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#
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# Added in both (check for same permissions)
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#
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".$2$2")
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if [ "$6" != "$7" ]; then
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echo "ERROR: File $4 added in both branches, permissions conflict $6->$7"
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exit 1
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fi
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echo "Adding $4 with perm $6"
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mv $(unpack-file "$2") $4
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chmod "$6" $4
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git-update-cache --add -- $4
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exit 0;;
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#
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# Modified in both, but differently ;(
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#
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"$1$2$3")
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echo "Auto-merging $4"
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orig=$(git-unpack-file $1)
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src1=$(git-unpack-file $2)
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src2=$(git-unpack-file $3)
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merge "$src2" "$orig" "$src1"
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ret=$?
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if [ "$6" != "$7" ]; then
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echo "ERROR: Permissions $5->$6->$7 don't match merging $src2"
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if [ $ret -ne 0 ]; then
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echo "ERROR: Leaving conflict merge in $src2"
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fi
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exit 1
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fi
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chmod -- "$6" "$src2"
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if [ $ret -ne 0 ]; then
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echo "ERROR: Leaving conflict merge in $src2"
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exit 1
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fi
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cp -- "$src2" "$4" && chmod -- "$6" "$4" && git-update-cache --add -- "$4" && exit 0
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;;
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*)
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echo "Not handling case $1 -> $2 -> $3"
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;;
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esac
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exit 1
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