remove_empty_or_phpunit_xml_dirs.php

# Clean any directory only containing phpunit.xml
# sure it was created for another branch and does
# not exist in current one.
candidates=$(find . -name phpunit.xml -not -path "./vendor/*" | xargs dirname | sort -r)
for candidate in ${candidates}; do
    numfiles=$(ls -1 ${candidate} | wc -l)
    if [[ ${numfiles} -eq 1 ]]; then
        echo "Deleting empty ${candidate}"
        rm -fr ${candidate}
        # if that leads to an empty parent, delete it too
        parent=$(dirname ${candidate})
        numfiles=$(ls -1 ${parent} | wc -l)
        if [[ ${numfiles} -eq 0 ]]; then
            echo "Deleting empty ${parent}"
            rm -fr ${parent}
        fi
    fi
done

# Similar, only 4.0 and up have admin/tool/componentlibrary and we are leaving there
# some files (docs, hugo...) that make things break when version.php is searched. Clean
# it if missing version.php
if [[ ! -f admin/tool/componentlibrary/version.php ]]; then
    rm -fr admin/tool/componentlibrary
fi