SVN post-commit hook to send emails to file owners

svn-notify-hook.sh

#!/usr/bin/env bash

LOOK=/usr/bin/svnlook
REPOS="$1"
REV="$2"
PROJECT="$3"

AUTHOR=$($LOOK author $REPOS -r $REV)

DOMAIN=domain.com

OWNERS=""
for FILE in $($LOOK changed $REPOS -r $REV | awk '{ print $2 }')
do
        OWNER_LOG=$(svn log "file://$REPOS/$FILE" 2> /dev/null | grep "^r[0-9]* | " | awk '{ print $3 }' | sort | uniq -c | sort | tail -n 1 | awk '{ print $2 }')
        if [[ "$OWNER_LOG" != "$AUTHOR" && "$OWNERS" != *" $OWNER_LOG "* ]]
        then
                OWNERS="$OWNERS $OWNER_LOG "
        fi

        OWNER_BLAME=$(svn blame -x "-w --ignore-eol-style" "file://$REPOS/$FILE" 2> /dev/null | awk '{ print $2 }' | sort | uniq -c | sort | tail -n 1 | awk '{ print $2 }')
        if [[ "$OWNER_BLAME" != "" && "$OWNER_BLAME" != "$AUTHOR" && "$OWNERS" != *" $OWNER_BLAME "* ]]
        then
                OWNERS="$OWNERS $OWNER_BLAME "
        fi
done

if [[ "$OWNERS" != "" ]]
then
        RECIPIENTS=$(for PERSON in $OWNERS; do echo -n "--to $PERSON@$DOMAIN "; 
done)

        /usr/local/bin/svnnotify                          \\
            --repos-path     "$REPOS"                     \\
            --revision       "$REV"                       \\
            --subject-prefix "[$PROJECT-svn]"             \\
            --attach-diff                                 \\
            --diff-switches  '-x "-w --ignore-eol-style"' \\
            --user-domain    $DOMAIN                      \\
            $RECIPIENTS
fi