add-authors

#!/bin/bash
mark=$BASHPID
for i in `git ls-files|grep -v -x -F -f update-copyright-blacklist`
do
    if [ -f $i -a ! -L $i ]
    then
	AUTHORS=$(git shortlog -n -s $i| cut -c8- | while read author; do git log -w -b --shortstat --author="$author" $i | grep -E "fil(e|es) changed" | awk "{files+=\$1; inserted+=\$4; deleted+=\$6} END {if(!(files==inserted && files==deleted) || !(files==1 && inserted==1 && deleted==0)) {print \"$author\"}}"; done | sed -e 's/$/,/g' | tr '[\n]' '[ ]' | sed -e 's/, $//g')
	PLURAL=$(echo $AUTHORS | sed -e 's/[^,]*//g' -e 's/,,*/,/g' | tr [,] [s])
	if grep -q 'Authors*:' $i
	then
	    echo "update author in $i"
	    sed -e 's/Authors*: \(.*\)^/Author'"$PLURAL"': '"$AUTHORS"'/g' <$i >$i.$mark
	else
	    echo "add author in $i"
	    sed -e 's/\(.*\)\(Copyright .* Free Software Foundation, Inc\.\)/\1Author'"$PLURAL"': '"$AUTHORS"'\n\1\2/g' <$i >$i.$mark
	fi
	chmod --reference=$i $i.$mark
	mv $i.$mark $i
    fi
done