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# pro-archman
# src/dir.sh
# Miscellaneous directory-related functions
#
# Copyright (C) 2013 Patrick McDermott
#
# This file is part of the ProteanOS Archive Manager.
#
# The ProteanOS Archive Manager 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 Archive Manager 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 Archive Manager. If not, see
# <http://www.gnu.org/licenses/>.
hash_name()
{
local name="${1}"
shift 1
local hash=
if [ "x${name}" != "x${name#lib?}" ]; then
hash="$(printf '%s\n' "${name}" | sed 's/^\(lib.\).*$/\1/')"
elif [ "x${name}" != "x${name#src-?}" ]; then
hash="$(printf '%s\n' "${name}" | sed 's/^\(src-.\).*$/\1/')"
elif [ "x${name}" != "x${name#src:?}" ]; then
hash="$(printf '%s\n' "${name}" | sed 's/^\(src:.\).*$/\1/')"
else
hash="$(printf '%s\n' "${name}" | sed 's/^\(.\).*$/\1/')"
fi
printf '%s\n' "${hash}"
return 0
}
dir_is_empty()
{
local dir="${1}"
shift 1
local ret=
local dirent=
ret=0
# Patterns to match all dirents except "." and "..":
# * dirents whose names don't start with "."
# .[!.] dirents whose names start with ".", are two characters long,
# and aren't ".."
# .??* dirents whose names start with "." and are three or more
# characters long
for dirent in "${dir}/"* "${dir}/".[!.] "${dir}/".[!.] "${dir}/".??*; do
if [ -e "${dirent}" ]; then
ret=1
break
fi
done
return ${ret}
}
try_rmdir()
{
local dir="${1}"
shift 1
if ! dir_is_empty "${dir}"; then
return 1
fi
if ! rmdir -- "${dir}"; then
return 1
fi
return 0
}
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