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#
# set +o errexit -o noglob is assumed.
#
rtl_check_path_vars() {
local _vnames="${1}" _rc=0 _vname="" _vname_val=""; _status="";
for _vname in ${_vnames}; do
_vname_val="$(rtl_get_var_unsafe "${_vname}")";
if [ -z "${_vname_val}" ]; then
_rc=1; _status="Error: variable \`${_vname}' is empty or unset."; break;
elif [ "${_vname_val#* *}" != "${_vname_val}" ]; then
_rc=2; _status="Error: variable \`${_vname}' contains one or more whitespace characters."; break;
fi;
done;
return "${_rc}";
};
rtl_clean_env() {
local _env_vars_except="${1}" _env_var="" _env_vars="";
_env_vars="$(export | sed -ne '/^export/{s/^export //;s/=.*$//p}')";
for _env_var in ${_env_vars}; do
if [ "${_env_var#DEFAULT_}" != "${_env_var}" ]\
|| [ "${_env_var#PKG_}" != "${_env_var}" ]; then
_env_vars_except="$(rtl_lconcat "${_env_vars_except}" "${_env_var}")";
fi;
done;
rtl_unset_vars $(rtl_lfilter "${_env_vars}" "${_env_vars_except}");
};
rtl_exists_any() {
local _subdir="${1}"; shift;
while [ "${#}" -gt 0 ]; do
if [ -e "${_subdir}/${1}" ]; then
return 0;
else
shift;
fi;
done; return 1;
};
rtl_export_vars() {
local _unsetfl=0; [ "x${1}" = "x-u" ] && { _unsetfl=1; shift; };
while [ "${#}" -ge 2 ]; do
if [ -n "${2}" ]; then
if [ "${_unsetfl:-0}" -eq 0 ]; then
rtl_set_var_unsafe "${1}" "${2}"; export "${1}";
else
unset "${1}";
fi;
fi;
shift 2;
done;
};
rtl_filter_vars() {
local _fn="${1}" _fnfl=0 _qchar="" _var_spec="" _vars="" _vname="" IFS="
"; for _var_spec in $(set); do
case "${_qchar}" in
"\"") if [ "${_var_spec%\"}" != "${_var_spec}" ]; then
_qchar="";
fi;
if [ "${_fnfl:-0}" -eq 1 ]; then
_vars="$(rtl_lconcat "${_vars}" "${_var_spec}" "\n")";
fi;
continue; ;;
"\'") if [ "${_var_spec%\'}" != "${_var_spec}" ]; then
_qchar="";
fi;
if [ "${_fnfl:-0}" -eq 1 ]; then
_vars="$(rtl_lconcat "${_vars}" "${_var_spec}" "\n")";
fi;
continue; ;;
*) case "${_var_spec}" in
[^=]*=\"*\") _qchar=""; _vname="${_var_spec%%=\"*}"; ;;
[^=]*=\"*) _qchar="\""; _vname="${_var_spec%%=\"*}"; ;;
[^=]*=\'*\') _qchar=""; _vname="${_var_spec%%=\'*}"; ;;
[^=]*=\'*) _qchar="\'"; _vname="${_var_spec%%=\'*}"; ;;
[^=]*=*) _qchar=""; _vname="${_var_spec%%=*}"; ;;
esac; ;;
esac;
if "${_fn}" "${_vname}"; then
_vars="$(rtl_lconcat "${_vars}" "${_var_spec}" "\n")"; _fnfl=1;
else
_fnfl=0;
fi;
done;
echo "${_vars}";
};
rtl_get_var_unsafe() {
local _vname="";
if [ "x${1}" = "x-u" ]; then
shift; _vname="$(rtl_toupper "${1}")";
else
_vname="${1}";
fi;
eval echo \${${_vname}};
};
rtl_head() {
local _pattern="${1}" _s="${2}";
while true; do
if [ "${_s%%${_pattern}}" = "${_s}" ]; then
break;
else
_s="${_s%%${_pattern}}";
fi;
done;
echo "${_s}";
};
rtl_kill_tree() {
local _pid="${1}" _signal="${2:-TERM}" _pid_child="" _pids="";
if _pids="$(pgrep -P "${_pid}")"\
&& [ -n "${_pids}" ]; then
for _pid_child in ${_pids}; do
rtl_kill_tree "${_pid_child}" "${_signal}";
done;
fi;
if [ "${_pid:-0}" -ne "${$}" ]\
&& kill "-${_signal}" "${_pid}" 2>/dev/null; then
RTL_KILL_TREE_PIDS="$(rtl_lconcat "${RTL_KILL_TREE_PIDS}" "${_pid}")";
fi;
};
rtl_run_cmd_unsplit() {
local _cmd="${1}" _cmdline="" _rc="" IFS; shift;
while [ ${#} -gt 0 ]; do
[ -n "${1}" ] &&\
_cmdline="${_cmdline:+${_cmdline}:}${1}";
shift;
done;
IFS=:; ${_cmd} ${_cmdline}; _rc=$?;
return ${_rc};
};
rtl_set_vars() {
local _vars_set_vname="${1}" _vname_dst="${2}" _vname_src_tmpls="${3}" \
_vars_set_old="" _vars_set_tmp="" _vname_src="";
for _vname_src in $(rtl_toupper "${_vname_src_tmpls}"); do
_vname_src="${_vname_src}_${_vname_dst}";
_vval_src="$(rtl_get_var_unsafe "${_vname_src}")";
if [ -n "${_vval_src}" ]; then
rtl_set_var_unsafe "PKG_${_vname_dst}" "${_vval_src}";
_vars_set_tmp="$(rtl_lconcat "${_vars_set_tmp}" "PKG_${_vname_dst}")";
fi;
done;
_vars_set_old="$(rtl_get_var_unsafe "${_vars_set_vname}")";
rtl_set_var_unsafe "${_vars_set_vname}" \
"$(rtl_lconcat "${_vars_set_old}" "${_vars_set_tmp}")";
};
# vim:filetype=sh
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