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#
# . ./build.vars and set -o errexit are assumed.
# See warning at the top of build.vars.
#
date() { command date +"${1:-${TIMESTAMP_FMT}}"; };
fetch_git() { [ -d ${1} ] && (cd ${1} && git pull origin main) || git clone ${3} ${2} ${1}; };
get_basename() { set -- $(get_name_without_slash ${1}); echo "${1##*/}"; };
get_var_dyn() { ${1}; };
get_var_unsafe() { eval echo \${${1}}; };
set_var_dyn() { eval ${1}\(\) \{ echo \"${2}\"\; \}; };
set_var_unsafe() { eval ${1}=\"${2}\"; };
get_name_without_slash() { while [ "x${1%/}" != "x${1}" ]; do set -- ${1%/}; done; echo ${1}; };
get_postfix_lrg() { echo "${1##*${2}}"; };
get_prefix_lrg() { echo "${1%%${2}*}"; };
get_postfix() { echo "${1#*${2}}"; };
get_prefix() { echo "${1%${2}*}"; };
match_any() { [ "x${1#*${2}*}" != "x${1}" ]; };
push_IFS() { _pI_IFS="${IFS}"; IFS="${1}"; };
pop_IFS() { IFS="${_pI_IFS}"; unset _pI_IFS; };
set_build_dir() { PKG_BUILD_DIR=${1}-${2}-${TARGET}; };
split() { push_IFS "${1}"; set -- ${2}; pop_IFS; echo "${*}"; };
test_cmd() { command -v "${1}" >/dev/null; };
unsplit() { push_IFS "${1}"; shift; set -- "${@}"; echo "${*}"; pop_IFS; };
export_vars_subst() {
_evs_pfx=${1}; _evs_pfx_new=${2}; shift 2;
while [ ${#} -gt 0 ]; do
if [ -n "${_evs_vval:=$(get_var_unsafe ${_evs_pfx}${1})}" ]; then
export "${_evs_pfx_new}${1}=${_evs_vval}";
fi; unset _evs_vval; shift;
done; unset _evs_pfx _evs_pfx_new;
};
rm_if_exists() {
[ -z "${1#-m}" ] && { _rie_arg_m=1; shift; };
[ -z "${1#-c}" ] && { _rie_arg_c=1; shift; };
[ -d ${1} -o -f ${1} ] && rm -rf ${1};
[ ${_rie_arg_m:-0} -eq 1 ] && { mkdir ${1}; unset _rie_arg_m; };
[ ${_rie_arg_c:-0} -eq 1 ] && { cd ${1}; unset _rie_arg_c; };
return 0;
};
set_env_vars() {
_sev_val_new="${1}"; shift;
while [ ${#} -gt 1 ]; do
[ -z "${_sev_val_new}" ] && unset ${1} ||\
export "${1}=${_sev_val_new}"; shift;
done; unset _sev_val_new;
};
# Download GNU bash-style patch sets into ${2}-patches-extra and
# apply them to ${2} in the correct order.
apply_patches() {
(rm_if_exists -m -c ${2}-patches-extra;
wget -c -nd -np -r -R \*.htm\* -R \*.sig ${1};
for _ap_patch_fname in \
$(find . -type f -not -iname \*.sig | sort); do
patch -b -d ../${2} -p0 < ${_ap_patch_fname};
done; unset _ap_patch_fname);
};
# Check whether all supplied arguments contain non-empty valid values.
check_path_vars() {
while [ ${#} -gt 0 ]; do
if [ -z "${_cpv_val:=$(get_var_unsafe "${1}")}" ]; then
log_msg failexit "Error: variable \`${1}' is empty or unset.";
elif match_any "${_cpv_val}" " "; then
log_msg failexit "Error: variable \`${1}' contains one or more whitespace characters.";
else
shift;
fi;
unset _cpv_val;
done;
};
# Check whether all supplied command names resolve.
check_prereqs() {
while [ ${#} -gt 0 ]; do
if ! command -v ${1} >/dev/null; then
log_msg failexit "Error: missing prerequisite command \`${1}'.";
fi; shift;
done;
};
# Clear the environment by unsetting each exported variable except
# for those named by the caller.
clear_env_with_except() {
_cewe_vfilter="${*}"; _cewe_unset_cmds="$(mktemp -q)";
export | while read _cewe_vspec; do
set -- ${_cewe_vspec}; shift;
[ "x${1#*[^\"\'=a-zA-Z0-9_]}" != "x${1}" ] && continue;
if ! match_list "${_cewe_vfilter}" " " \
$(get_prefix_lrg ${1} =); then
echo unset $(get_prefix_lrg ${1} =) >> ${_cewe_unset_cmds};
fi;
done; . "${_cewe_unset_cmds}"; rm -f "${_cewe_unset_cmds}" 2>/dev/null;
unset _cewe_vfilter _cewe_vspec;
};
fetch() {
wget ${WGET_ARGS} ${1};
if [ ${#} -eq 2 ]; then
set -- $(get_basename ${1}) "$(compare_hash $(get_basename ${1}) ${2})" ${2};
if [ -n "${2}" ]; then
log_msg failexit "Error: hash mismatch for URL \`${1}' (is: ${2}, should be: ${3}.)";
fi;
fi;
};
compare_hash() {
# Push the output of dgst(1SSL) and the caller-supplied hash
# value to compare the former with on the pseudo-stack and
# shift off# all but the last two positional parameters.
# This corresponds to the hash output and caller-supplied
# hash values.
set -- $(openssl dgst -sha256 ${1}) ${2}; shift $((${#}-2));
[ "x${1}" = "x${2}" ] || echo "${1}";
};
compare_hash_manifest() {
while [ ${#} -gt 0 ]; do
if ! compare_hash ${1} ${2}; then
log_msg failexit "Error: hash mismatch for patch file \`${1}'.";
fi; shift;
done; return 0;
};
is_build_script_done() {
if [ -n "${ARG_RESTART_SCRIPT_AT}" ]; then
if [ "${1}" = "finish" ]\
|| [ -z "${ARG_RESTART_SCRIPT_AT#ALL}" ]; then
return 1; # Build
elif ! match_list ${ARG_RESTART_SCRIPT_AT} , ${1}; then
return 0; # Skip
else
return 1; # Build
fi;
elif [ -f ${WORKDIR}/.${2:-$(get_basename ${SCRIPT_FNAME%.build})}.${1} ]; then
return 0; # Skip
else
return 1; # Build
fi;
};
set_build_script_done() {
_sbsd_script_fname=${SCRIPT_FNAME##*/};
_sbsd_done_fname=${WORKDIR}/.${_sbsd_script_fname%.build};
while [ $# -ge 1 ]; do
if [ "x${1#-}" != "x${1}" ]; then
rm -f ${_sbsd_done_fname}.${1#-};
else
touch ${_sbsd_done_fname}.${1};
log_msg info "Finished build step ${1} of build script \`${_sbsd_script_fname}'.";
fi; shift;
done; unset _sbsd_script_fname _sbsd_done_fname;
};
log_env_vars() {
log_msg info "Variables for this build:";
while [ ${_lev_nvar:=0} -lt ${#} ]; do
_lev_arg="$(eval echo \${${_lev_nvar}})";
_lev_arg="${_lev_arg%%=*}";
if [ ${#_lev_arg} -gt ${_lev_arg_len_max:=0} ]; then
_lev_arg_len_max=${#_lev_arg};
fi; : $((_lev_nvar+=1));
done; unset _lev_nvar _lev_arg;
while [ ${#} -gt 0 ]; do
log_msg info "$(printf \
"%${_lev_arg_len_max}.${_lev_arg_len_max}s=%s" \
"${1%%=*}" "$(get_var_unsafe ${1#*=})")";
shift;
done; unset _lev_arg_len_max;
};
log_msg() {
_lm_lvl=${1}; shift;
case ${_lm_lvl} in
failexit) printf "\033[${LOG_MSG_FAIL_COLOUR}m"; ;;
fail) printf "\033[${LOG_MSG_FAIL_COLOUR}m"; ;;
info) printf "\033[${LOG_MSG_INFO_COLOUR}m"; ;;
succ) printf "\033[${LOG_MSG_SUCC_COLOUR}m"; ;;
esac;
if [ $# -gt 1 ]; then
printf "==> %s %s %s\033[0m\n" "$(date "${TIMESTAMP_FMT}")" "${1}" "$*";
else
printf "==> %s %s\033[0m\n" "$(date "${TIMESTAMP_FMT}")" "${1}";
fi; [ ${_lm_lvl} = failexit ] && exit 1 || unset _lm_lvl;
};
match_list() {
_ml_cmp="${3}"; push_IFS "${2}"; set -- ${1}; pop_IFS;
while [ ${#} -gt 0 ]; do
if [ "x${1}" = "x${_ml_cmp}" ]; then
unset _ml_cmp; return 0;
fi; shift;
done; unset _ml_cmp; return 1;
};
parse_with_pkg_name() {
PKG_LVL=${1}; PKG_NAME=${2}; shift 2;
while [ ${#} -ge 0 ]; do
if [ "x${PKG_NAME}" = "x${1}" ]; then
export_vars_subst PKG_LVL${PKG_LVL}_ PKG_ ${PKG_BUILD_VARS};
export_vars_subst PKG_$(echo ${PKG_NAME} | tr a-z A-Z)_ PKG_ ${PKG_BUILD_VARS};
[ -z "${PKG_URL}" ] && return 1;
[ -z "${PKG_FNAME}" ] && PKG_FNAME=${PKG_URL##*/};
[ -z "${PKG_SUBDIR}" ] && PKG_SUBDIR=${PKG_FNAME%%.tar*};
[ -n "${PKG_ENV_VARS_EXTRA}" ] && export ${PKG_ENV_VARS_EXTRA};
return 0;
fi; shift;
done; return 1;
};
run_cmd_unsplit() {
_rcu_cmd=${1}; shift;
while [ ${#} -gt 0 ]; do
[ -n "${1}" ] &&\
_rcu_cmdline="${_rcu_cmdline:+${_rcu_cmdline},}${1}";
shift;
done;
push_IFS ,; ${_rcu_cmd} ${_rcu_cmdline}; _rcu_rc=$?; pop_IFS;
unset _rcu_cmd _rcu_cmdline; return ${_rcu_rc};
};
# vim:filetype=sh
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