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#
# set +o errexit -o noglob -o nounset is assumed.
#
rtl_check_prereqs() {
local _rcp_rstatus="${1#\$}" \
_rcp_cmd="" _rcp_cmds_missing="" _rcp_rc=0;
shift;
for _rcp_cmd in "${@}"; do
if ! which "${_rcp_cmd}" >/dev/null 2>&1; then
_rcp_cmds_missing="${_rcp_cmds_missing:+${_rcp_cmds_missing} }${_rcp_cmd}";
fi;
done;
if [ "${_rcp_cmds_missing:+1}" = 1 ]; then
_rcp_rc=1;
rtl_setrstatus "${_rcp_rstatus}" 'Error: missing prerequisite package(s): '"${_rcp_cmds_missing}";
fi;
return "${_rcp_rc}";
};
rtl_clean_env() {
local _rce_env_vars_except="${1}" \
_rce_env_var="" _rce_env_vars="" _rce_env_vars_unset="";
_rce_env_vars="$(export | sed -ne '/^export/{s/^export //;s/=.*$//p}')";
for _rce_env_var in ${_rce_env_vars}; do
if [ "${_rce_env_var#DEFAULT_}" != "${_rce_env_var}" ]\
|| [ "${_rce_env_var#PKG_}" != "${_rce_env_var}" ]; then
rtl_lconcat \$_rce_env_vars_except "${_rce_env_var}";
fi;
done;
rtl_lfilter2 \$_rce_env_vars \$_rce_env_vars_unset "${_rce_env_vars_except}";
rtl_unset_vars ${_rce_env_vars_unset};
return 0;
};
rtl_get_cpu_count() {
local _rgcc_rstatus="${1#\$}" _rgcc_rcount="${2#\$}" \
_rgcc_line="" _rgcc_ncpus=0 _rgcc_rc=0 _rgcc_sname="";
_rgcc_sname="$(uname -s 2>/dev/null)" || return 1;
case "${_rgcc_sname}" in
Linux) if [ ! -e "/proc/cpuinfo" ]; then
_rgcc_rc=1;
rtl_setrstatus "${_rgcc_rstatus}" 'Error: /proc/cpuinfo non-existent.';
else while read -r _rgcc_line; do
if rtl_match "${_rgcc_line}" "processor*:"; then
: $((_rgcc_ncpus+=1));
fi;
done < /proc/cpuinfo;
_rgcc_rc=0;
rtl_setrstatus "${_rgcc_rstatus}" "";
fi; ;;
*) _rgcc_rc=1;
rtl_setrstatus "${_rgcc_rstatus}" 'Error: unknown platform \`'"${_rgcc_sname}"''\''.';
;;
esac;
eval ${_rgcc_rcount}='${_rgcc_ncpus}';
return "${_rgcc_rc}";
};
rtl_get_var_unsafe() {
local _rgvu_rvname_out="${1#\$}" \
_rgvu_vname="";
shift;
if [ "x${1}" = "x-u" ]; then
shift; _rgvu_vname="${1}"; rtl_toupper \$_rgvu_vname;
else
_rgvu_vname="${1}";
fi;
eval ${_rgvu_rvname_out}="\${${_rgvu_vname}:-}";
return 0;
};
rtl_get_vars_fast() {
local _rgvf_pattern="${1}";
set | awk -F= '/'"${_rgvf_pattern}"'/{print $1}' | sort;
return 0;
};
rtl_kill_tree() {
local _rkt_rpids="${1#\$}" _rkt_pid="${2}" _rkt_signal="${3:-TERM}" \
_rkt_pid_child="" _rkt_pids="";
if _rkt_pids="$(pgrep -P "${_rkt_pid}")"\
&& [ "${_rkt_pids:+1}" = 1 ]; then
for _rkt_pid_child in ${_rkt_pids}; do
rtl_kill_tree "${_rkt_rpids}" "${_rkt_pid_child}" "${_rkt_signal}";
done;
fi;
if [ "${_rkt_pid:-0}" -ne "${$}" ]\
&& kill "-${_rkt_signal}" "${_rkt_pid}" 2>/dev/null; then
rtl_lconcat "${_rkt_rpids}" "${_rkt_pid}";
fi;
return 0;
};
rtl_prompt() {
local rp_fmt="${1}" rp_choice=""; shift;
printf "${rp_fmt}? (y|N) " "${@}";
read -r rp_choice;
case "${rp_choice}" in
[yY]) rp_choice=1; ;;
*) rp_choice=0; ;;
esac;
return "${rp_choice}";
};
rtl_rc() {
local _rr_nflag="${1}" _rr_cmd="${2}";
shift 2;
case "${_rr_nflag}" in
1) if [ "${#}" -gt 0 ]; then
rtl_log_msg "verbose" "${MSG_rtl_platform_rc1}" "${_rr_cmd}" "${*}";
else
rtl_log_msg "verbose" "${MSG_rtl_platform_rc2}" "${_rr_cmd}";
fi; ;;
*) "${_rr_cmd}" "${@}"; ;;
esac;
return 0;
};
rtl_run_cmd_unsplit() {
local _rrcu_cmd="${1}" \
_rrcu_cmdline="" _rrcu_rc="" IFS;
shift;
while [ ${#} -gt 0 ]; do
[ "${1:+1}" = 1 ] &&\
_rrcu_cmdline="${_rrcu_cmdline:+${_rrcu_cmdline}:}${1}";
shift;
done;
IFS=:; ${_rrcu_cmd} ${_rrcu_cmdline}; _rrcu_rc=$?;
return ${_rrcu_rc};
};
rtl_set_var_from_cmdline() {
local _rsvfc_rstatus="${1#\$}" _rsvfc_arg="${2}" \
_rsvfc_rc=0 _rsvfc_vname="" _rsvfc_vval="";
_rsvfc_vname="${_rsvfc_arg%%=*}";
_rsvfc_vval="${_rsvfc_arg#*=}";
if [ "${_rsvfc_vval:+1}" != 1 ]; then
_rsvfc_rc=1;
rtl_setrstatus "${_rsvfc_rstatus}" 'empty value specified for \${'"${_rsvfc_vname}"'}.';
else
rtl_set_var_unsafe "${_rsvfc_vname}" "${_rsvfc_vval}";
fi;
return "${_rsvfc_rc}";
};
rtl_set_vars() {
local _rsv_vars_set_vname="${1}" _rsv_vname_dst="${2}" _rsv_vname_src_tmpls="${3}" \
_rsv_vars_set_old="" _rsv_vars_set_tmp="" _rsv_vname_src="" _rsv_vnames_src="";
rtl_toupper2 \$_rsv_vname_src_tmpls \$_rsv_vnames_src;
for _rsv_vname_src in ${_rsv_vnames_src}; do
_rsv_vname_src="${_rsv_vname_src}_${_rsv_vname_dst}";
eval _rsv_vval_src="\${${_rsv_vname_src}:-}";
if [ "${_rsv_vval_src:+1}" = 1 ]; then
eval PKG_${_rsv_vname_dst}='${_rsv_vval_src}';
_rsv_vars_set_tmp="${_rsv_vars_set_tmp:+${_rsv_vars_set_tmp} }PKG_${_rsv_vname_dst}";
fi;
done;
eval _rsv_vars_set_old="\${${_rsv_vars_set_vname}}";
rtl_set_var_unsafe "${_rsv_vars_set_vname}" "${_rsv_vars_set_old:+${_rsv_vars_set_old} }${_rsv_vars_set_tmp}";
return 0;
};
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