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#
# set +o errexit -o noglob -o nounset is assumed.
# N.B. Lists separated by SP, when passed to rtl_l*() w/ explicit IFS,
# must specify "<SP><VT>" as IFS.
#
rtl_lassign() {
local _vnames="${1}" _sep="${2}" _vname="" _vval=""\
IFS RTL_LFIRST_HEAD="" RTL_LFIRST_TAIL="";
IFS="${_sep}"; shift 2;
for _vval in ${@}; do
if ! rtl_lfirst "${_vnames}" " "; then
return 1;
else
_vname="${RTL_LFIRST_HEAD}"; _vnames="${RTL_LFIRST_TAIL}";
rtl_set_var_unsafe "${_vname}" "${_vval}";
fi;
done;
};
rtl_lconcat() {
local _list="${1}" _litem_new="${2}" _sep="${3:- }" IFS="${3:-${IFS:- }}";
if [ -n "${_list}" ]; then
printf "%s%s%s" "${_list}" "${_sep}" "${_litem_new}";
else
printf "%s" "${_litem_new}";
fi;
};
rtl_lfilter() {
local _list="${1}" _filter="${2}" _sep="${3:- }" IFS="${3:-${IFS:- }}"\
_filterfl="" _litem="" _litem_filter="" _lnew="";
if [ -z "${_filter}" ]; then
printf "%s" "${_list}"; return 0;
else for _litem in ${_list}; do
_filterfl=0;
for _litem_filter in ${_filter}; do
if [ "${_litem_filter}" = "${_litem}" ]; then
_filterfl=1; break;
fi;
done;
if [ "${_filterfl:-0}" -eq 0 ]; then
_lnew="${_lnew:+${_lnew}${_sep}}${_litem}";
fi;
done; fi;
printf "%s" "${_lnew}";
};
rtl_lfilter2() {
local _rlist="${1#\$}" _rlist_new="${2#\$}" _filter="${3}" _sep="${4:- }" IFS="${4:-${IFS:- }}"\
_filterfl="" _litem="" _litem_filter="" _lnew="";
if [ "${_filter:+1}" != 1 ]; then
eval ${_rlist_new}=; return 0;
else eval set -- '${'"${_rlist}"'}'\; ${_rlist_new}=;
while [ "${#}" -gt 0 ]; do
_litem="${1}"; shift; _filterfl=0;
for _litem_filter in ${_filter}; do
if [ "${_litem_filter}" = "${_litem}" ]; then
_filterfl=1; break;
fi;
done;
if [ "${_filterfl:-0}" -eq 0 ]; then
eval ${_rlist_new}='${'"${_rlist_new}"':+${'"${_rlist_new}"'}${_sep}}${_litem}';
fi;
done;
fi;
};
rtl_lfilter3() {
rtl_lfilter2 "${1}" "${1}" "${2}" "${3:-}";
};
rtl_lfirst() {
local _list="${1}" _sep="${2}" IFS; IFS="${_sep}";
set -- ${_list}; RTL_LFIRST_HEAD="${1}";
if [ "${#}" -ge 0 ]; then
shift; RTL_LFIRST_TAIL="${*}";
else
RTL_LFIRST_TAIL="";
fi;
};
rtl_llength() {
local _list="${1}" _sep="${2:- }" IFS="${2:-${IFS:- }}" _litem="" _llength=0;
for _litem in ${_list}; do
: $((_llength+=1));
done;
printf "%s" "${_llength}";
};
rtl_llength2() {
local _rlist="${1#\$}" _rlen="${2#\$}" _sep="${3:- }" IFS="${3:-${IFS:- }}";
eval set -- '${'"${_rlist}"'}'\; ${_rlen}='${#}';
};
rtl_llift() {
local _list="${1}" _sep="${2}" _sep_new="${3}" IFS; IFS="${_sep}";
set -- ${_list}; IFS="${_sep_new}";
printf "%s" "${*}";
};
rtl_llift2() {
local _rlist="${1#\$}" _rlist_new="${2#\$}" _sep="${3}" \
_sep_new="${4}" IFS; IFS="${_sep}";
eval set -- '${'"${_rlist}"'}'; IFS="${_sep_new}";
eval ${_rlist_new}='"${*}"';
};
rtl_llift3() {
rtl_llift2 "${1}" "${1}" "${2}" "${3}";
};
rtl_lmatch() {
local _list="${1}" _item="${2}" _sep="${3:- }";
[ -n "$(rtl_lsearch "${_list}" "${_item}" "${_sep}")" ];
};
rtl_lmax() {
local _len=0 _len_max=0;
while [ "${#}" -gt 0 ]; do
_len="${#1}";
if [ "${_len}" -gt "${_len_max}" ]; then
_len_max="${_len}";
fi; shift;
done; printf "%s" "${_len_max}";
};
rtl_lsearch() {
local _list="${1}" _filter="${2}" _sep="${3:- }" IFS="${3:-${IFS:- }}"\
_litem="" _litem_filter="" _lnew="";
if [ -z "${_filter}" ]; then
printf "%s" "${_list}"; return 0;
else for _litem in ${_list}; do
for _litem_filter in ${_filter}; do
if [ "${_litem_filter}" = "${_litem}" ]; then
_lnew="${_lnew:+${_lnew}${_sep}}${_litem}";
break;
fi;
done;
done; fi;
printf "%s" "${_lnew}";
};
rtl_lsearch_patternl() {
local _list="${1}" _pattern="${2}" _sep="${3:- }" IFS="${3:-${IFS:- }}"\
_litem="" _lnew="";
if [ -n "${_pattern}" ]; then
for _litem in ${_list}; do
if [ "${_litem#${_pattern}}" != "${_litem}" ]; then
_lnew="${_lnew:+${_lnew}${_sep}}${_litem}";
fi;
done;
fi;
printf "%s" "${_lnew}";
};
rtl_lsort() {
local _list="${1}" _sep="${2:- }";
printf "%s" "${_list}" | tr "${_sep}" "\n" | sort | paste -s -d "${_sep}";
};
rtl_lunfold_depends() {
local _vname_template="${1}" _depends="" _name="" _names=""; shift;
for _name in "${@}"; do
if _depends="$(rtl_get_var_unsafe -u "$(eval printf \"%s\" \""${_vname_template}"\")")"\
&& [ -n "${_depends}" ]; then
_depends="$(rtl_lunfold_depends "${_vname_template}" ${_depends})";
_names="$(rtl_lconcat "${_names}" "${_depends}")";
fi;
_names="$(rtl_lconcat "${_names}" "${_name}")";
done;
printf "%s" "${_names}";
};
# vim:filetype=sh
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