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# Miscellaneous directory-related functions
#
# Copyright (C) 2013, 2014 Patrick "P. J." McDermott
#
# This file is part of the ProteanOS Development Kit.
#
# The ProteanOS Development Kit is free software: you can redistribute
# it and/or modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# The ProteanOS Development Kit is distributed in the hope that it
# will be useful, but WITHOUT ANY WARRANTY; without even the implied
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with the ProteanOS Development Kit. If not, see
# <http://www.gnu.org/licenses/>.
dir_is_empty()
{
local dir="${1}"
local ret=
local dirent=
local exclude=
local exclusion=
shift 1
ret=0
# Patterns to match all dirents except "." and "..":
# * dirents whose names don't start with "."
# .[!.] dirents whose names start with ".", are two characters long,
# and aren't ".."
# .??* dirents whose names start with "." and are three or more
# characters long
for dirent in "${dir}/"* "${dir}/".[!.] "${dir}/".[!.] "${dir}/".??*; do
if ! [ -e "${dirent}" ]; then
continue
fi
exclude=false
for exclusion in "${@}"; do
if [ "x${dirent##*/}" = "x${exclusion}" ]; then
exclude=true
break
fi
done
if ! ${exclude}; then
ret=1
break
fi
done
return ${ret}
}
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