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#
# set +o errexit -o noglob is assumed.
#
ex_rtl_check_path_vars() {
local _vnames="${1}" _rc=0 _vname="" _vname_val=""; _status="";
for _vname in ${_vnames}; do
_vname_val="$(ex_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 "${_rc}";
};
ex_rtl_clean_env() {
local _env_vars_except="${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_}" != "${_env_var}" ]; then
_env_vars_except="${_env_vars_except:+${_env_vars_except} }${_env_var}";
fi;
done;
ex_rtl_unset_vars $(ex_rtl_lfilter "${_env_vars}" "${_env_vars_except}");
};
ex_rtl_exists_any() {
local _subdir="${1}"; shift;
while [ "${#}" -gt 0 ]; do
if [ -e "${_subdir}/${1}" ]; then
return 0;
else
shift;
fi;
done; return 1;
};
ex_rtl_export_vars() {
local _unsetfl=0; [ "x${1}" = "x-u" ] && { _unsetfl=1; shift; };
while [ "${#}" -ge 2 ]; do
if [ -n "${2}" ]; then
if [ "${_unsetfl:-0}" -eq 0 ]; then
ex_rtl_set_var_unsafe "${1}" "${2}"; export "${1}";
else
unset "${1}";
fi;
fi;
shift 2;
done;
};
ex_rtl_get_var_unsafe() {
local _vname="";
if [ "x${1}" = "x-u" ]; then
shift; _vname="$(ex_rtl_toupper "${1}")";
else
_vname="${1}";
fi;
eval echo \${${_vname}};
};
ex_rtl_head() {
local _pattern="${1}" _s="${2}";
while true; do
if [ "${_s%%${_pattern}}" = "${_s}" ]; then
break;
else
_s="${_s%%${_pattern}}";
fi;
done;
echo "${_s}";
};
ex_rtl_kill_tree() {
local _pid="${1}" _signal="TERM" _pid_child="" _pid_top="";
for _pid_top in $(pgrep -P "${_pid}"); do
for _pid_child in $(pgrep -P "${_pid_top}" 2>/dev/null); do
_pids_killed="${_pids_killed:+${_pids_killed} }${_pid_child}"; kill "-${_signal}" "${_pid_child}" 2>/dev/null;
done;
_pids_killed="${_pids_killed:+${_pids_killed} }${_pid_top}"; kill "-${_signal}" "${_pid_top}" 2>/dev/null;
done;
};
ex_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 ${_rc};
};
ex_rtl_set_vars() {
local _vars_set_vname="${1}" _vname_dst="${2}" _vname_src_tmpls="${3}" \
_vars_set_old="" _vars_set_tmp="" _vname_src="";
for _vname_src in $(ex_rtl_toupper "${_vname_src_tmpls}"); do
_vname_src="${_vname_src}_${_vname_dst}";
_vval_src="$(ex_rtl_get_var_unsafe "${_vname_src}")";
if [ -n "${_vval_src}" ]; then
ex_rtl_set_var_unsafe "PKG_${_vname_dst}" "${_vval_src}";
_vars_set_tmp="${_vars_set_tmp:+${_vars_set_tmp} }PKG_${_vname_dst}";
fi;
done;
_vars_set_old="$(ex_rtl_get_var_unsafe "${_vars_set_vname}")";
ex_rtl_set_var_unsafe "${_vars_set_vname}" \
"${_vars_set_old:+${_vars_set_old} }${_vars_set_tmp}";
};
# vim:filetype=sh
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