#!/bin/sh

chk_ENV() {

if [ -z "${FILE_LOG}" ]; then
   FILE_LOG=log
	export FILE_LOG 
fi

test -f "${FILE_LOG}" || touch "${FILE_LOG}"

if [ $? != 0 ]; then
	echo "Unable to create log file \"${FILE_LOG}\"" >&2
	exit 1
fi

if [ -z "${MSG_LOG}" ]; then
   MSG_LOG="***** $1 *****"
	export MSG_LOG 
fi
if [ -z "${OPENSSL}" ]; then
	OPENSSL="openssl"
	export OPENSSL 
fi
if [ ! -z "${ENGINE}" ]; then
	ENGINE="-engine ${ENGINE}"
	export ENGINE 
fi

ESITO=0
export ESITO
}

begin_CMD() {

echo "$MSG_LOG: BEGIN ON " `date` >>${FILE_LOG}

if [ ! -z "${DEBUG}" -a "${DEBUG}" != "0" ]; then
	echo \
"--- DEBUG INFORMATION ---
ENV[HOME]         = \"${HOME}\"
ENV[FILE_LOG]     = \"${FILE_LOG}\"
ENV[MSG_LOG]      = \"${MSG_LOG}\"
ENV[OPENSSL]      = \"${OPENSSL}\"
ENV[ENGINE]       = \"${ENGINE}\"
${DEBUG_INFORMATION}--- DEBUG INFORMATION ---" >>${FILE_LOG}
fi

STR_CMD=COMMAND
export STR_CMD
}

echo_CMD() {

echo $STR_CMD: $1 >>${FILE_LOG}
}

print_CMD() {

if [ -z "$2" ]; then
	eval echo  $STR_CMD: $1			>>${FILE_LOG}
else
		  echo "$STR_CMD: $1 > $2" >>${FILE_LOG}
fi
}

exec_CMD() {

if [ -z "$2" ]; then
	eval $1		 2>>${FILE_LOG}
else
	eval $1 > $2 2>>${FILE_LOG}
fi
}

print_exec_CMD() {

print_CMD "$1" $2
 exec_CMD "$1" $2
}

end_CMD() {

if [ -n "${EXIT_CMD}" ]; then
	STR_CMD=EXIT_COMMAND
	print_exec_CMD "$EXIT_CMD"
fi

if [ -n "$1" ]; then
	ESITO=$1
fi

echo "$MSG_LOG: END WITH CODE $ESITO ON "`date` >>${FILE_LOG}

exit ${ESITO}
}

check_CMD() {

ESITO=$?

if [ $ESITO -ne 0 -a -n "${EXIT_CMD}" ]; then
	STR_CMD=EXIT_COMMAND
	print_exec_CMD "$EXIT_CMD"
	unset EXIT_CMD
			 end_CMD
fi
}

run_CMD() {

print_exec_CMD "$1" $2
	  check_CMD
}

proc_CMD() {

begin_CMD
  run_CMD "$1"
  end_CMD
}

# extra

run_CMD_with_input() {

	echo_CMD "$2"
	$2 <<END >>${FILE_LOG} 2>>${FILE_LOG}
$1
END
	check_CMD
}

run_CMD_with_output() {

	echo_CMD "$2"
	STR_CMD="OUTPUT "
	 run_CMD "$1=\"`$2`\""
	STR_CMD=COMMAND
}