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Blame subr/ex_setup_checks.subr

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#
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# set -o errexit -o noglob are assumed.
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#
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ex_setup_checks() {
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	local __ _exit;
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	for __ in ${CHECK_PATH_VARS}; do
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		if [ -z "${___:=$(ex_get_var_unsafe "${__}")}" ]; then
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			ex_log_msg failexit "Error: variable \`${__}' is empty or unset.";
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		elif [ "${___#* *}" != "${___}" ]; then
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			ex_log_msg failexit "Error: variable \`${__}' contains one or more whitespace characters.";
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		fi;
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	done;
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	for __ in ${CHECK_PREREQ_CMDS} $(eval echo ${CHECK_PREREQ_FILES_DYNAMIC}) ${CHECK_PREREQ_FILES}; do
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		if [ "${__#/}" != "${__}" ]; then
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			if [ ! -e "${__}" ]; then
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				ex_log_msg fail "Error: missing prerequisite file \`${__}'.";
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				_exit=1;
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			fi;
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		else
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			if ! ex_test_cmd "${__}"; then
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				ex_log_msg fail "Error: missing prerequisite command \`${__}'.";
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				_exit=1;
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			fi;
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		fi;
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	done;
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	for __ in ${CHECK_PREREQ_PERL_MODULES}; do
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		if ! perl -M"${__}" -e "" 2>/dev/null; then
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			ex_log_msg fail "Error: missing prerequisite Perl module \`${__}'.";
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			_exit=1;
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		fi;
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	done;
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	if [ ${_exit:-0} = 1 ]; then
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		exit 1;
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	fi;
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};
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# vim:filetype=sh