Проверка входных параметров или косвенные ссылки на BASH

#/bin/ksh
#/bin/bash
#
# script CheckTabel.sh - check tabel data
#
# See on : http://www.linuxcookbook.ru/books/absguide/ch09s05.html
#
#12.02.2013	_aap_ 	created by Patratskiy Aleksey
#26.02.2013	_aap_ 	RELAEASE work with errors, get first right parametrs
#28.02.2013	_aap_	fix same problem var counts
#05.03.2013 _aap_ 	can use without <END>
#

#Limits :
#Comment '#' work only for first position in string
#Devior TAB  If parameters use TAB it can not be used
#input data: Conditions
#
# after you can check variable "CheckTabelErrors" for errors count


#exaple of var :Conditions
#Conditions='
##check stuff of vars and data
#Check var parametrs
#varIn1	varIn2	varIn3	varIn4	=>	varOut1	varOut2
#varIn1varIn1	varIn2varIn2	varIn3varIn3	varIn4varIn4	=>	AAPvarOut1varOut1	AAPvarOut2varOut2
#<.> <_> <> dsf => sdf sdf
#<ERROR> Error `exit 1`	=>	<>	<>
#<END>
#'



#internals Vars:
eTmpFile=$HOME/tmp/tmpSetVar.sh
eDIVISOR='	'
eInOutDevisor='=>'
eEND='<END>'
eERROR='<ERROR>'
eANY='<?>'
eEMPTY='<_>'
eNOTEMPTY='<.>'
eISVAR=1
eDeb=""
eIsFind=0
((CheckTabelErrors=0))
((eCurLine=0))
#for ksh
typeset -A eDataIN
typeset -A eDataOUT
typeset -A eVarIN
typeset -A eVarDatIN
typeset -A eVarOUT
typeset -A eVarLine
typeset -A eDatLine


#for bash
#typeset -a eDataIN
#typeset -a eDataOUT
#typeset -a eVarIN
#typeset -a eVarDatIN
#typeset -a eVarOUT
#typeset -a eVarLine
#typeset -a eDatLine



#source $eTmpFile  # erase temporary file for setap vars
> $eTmpFile  # erase temporary file for setap vars

#echo ifs=$IFS
OLD_IFS="$IFS"
IFS=$'	'#


echo  "${Conditions}" |
while read Line
do

	((eCurLine++))

#	echo "LineErr: ${eCurLine}" ;echo "Line: ${Line}"

	if [[ "${Line:0:1}" != "#"  && "$Line" != "" && "${Line:0:${#eEND}}" != "${eEND}" ]] #skeep empty and commets lines AND with <END>
	then
		if [[ "eISVAR" -eq "1" ]]   # check for var names line
		then
			eISVAR=0
			eVarLine=(`echo "$Line"`)
			cntIn=${#eVarLine[@]}

#		echo ${#eVarLine[@]} ${eVarLine[@]}


			for (( i = 0 ; i < cntIn ; i++ ))	do	#get names of input vars
				if [ "${eVarLine[${i}]}" == "${eInOutDevisor}" ]
				then
					((outBgn=i + 1))
					break

				fi
				eVarIN[${i}]=${eVarLine[$i]}
				tmp=${eVarLine[$i]}	# get name of input var
				eval tmp=\$$tmp		# gat var value by var name
				eVarDatIN[${i}]=${tmp}
#	   	echo DEBUG Element [$i]: ${eVarLine[$i]} val=${eVarIN[${i}]} eVarDatIN=${eVarDatIN[${i}]}
			done
#		echo DEBUG outBgn=$outBgn cntIn=$cntIn

			if (( cntIn == 0 || outBgn == 0 ))
			then
				echo !!! Error CheckTabel.sh  formating outBgn=$outBgn cntIn=$cntIn wrong  eDIVISOR TAB
				continue

			fi

			(( j = 0 ))
			for (( i = $outBgn ; i < cntIn ; i++ ))	do # get name of output vars
#	   	echo "${eVarLine[$i]}=Set${i}"
					eVarOUT[$j]=${eVarLine[$i]}
					((j++))
			done

			eIsFind=0 # not finde yet

#		echo eVarIN  ${#eVarIN[@]}: ${eVarIN[@]} ;	echo eVarOUT  ${#eVarOUT[@]}: ${eVarOUT[@]}


###################################################################################
		else

			if [[ "${Line:0:${#eEND}}" == "${eEND}" ]] # check for end of sentence
			then
#				echo "END: $Line" #echo "Line: ${Line:0:${#eEND}} == "
#				eISVAR=1
#				source $eTmpFile #. data-file    	# execute file and set values for vars
#				> $eTmpFile  						# erase temporary file for setap vars
				continue  # while read Line

			fi
#
#Check for error message and error vars set
#
			if [[ "${Line:0:${#eERROR}}" == "${eERROR}" ]] # check for ERROR of sentence
			then
#		echo "<ERROR>:${eIsFind} $Line"  #echo "Line: ${Line:0:${#eEND}} == "
				LineErr=""
				if [[ "eIsFind" -eq "0" ]]
				then
				    ((CheckTabelErrors++))
					LineErr="${Line#${eERROR}}"  #remove <Error>

					echo "!!! ERROR CheckTabel.sh LineErr: ${eCurLine}" #;echo "Line: ${Line}"

					ErrVarOut="${LineErr#*${eInOutDevisor}}" #+ ${#eInOutDevisor}+
					LineErr="${LineErr%${eInOutDevisor}*}"
					eDataOUT=( `echo "$ErrVarOut"` )

					(
						for (( i = 0 ; i < ${#eVarOUT[@]} ; i++ ))	do
					    	echo "${eVarOUT[$i]}=\"${eDataOUT[$i]}\""
						done
						echo "${LineErr}"	# error command
					) >> $eTmpFile # create temporary file for setup vars and show error message
				fi

				# ---------- execute --------------
				eISVAR=1		#	its mean , that next line will with varnames
				source $eTmpFile #. data-file    	# execute file and set values for vars
				> $eTmpFile  						# erase temporary file for setap vars

				continue  # while read Line
			fi


			#for skeep all next currient tabel parametrs
			if [[ "eIsFind" -eq "1" ]]
			then
				continue  # while read Line
			fi

			eDatLine=( `echo "$Line"` )

#	echo OUT ${#eDatLine[@]} ${eDatLine[@]}
   			cntOut=${#eDatLine[@]}


			if (( $cntIn !=  $cntOut ))
			then
				echo !!! Error CheckTabel.sh in Conditions line=${eCurLine} formating Vars $cntIn but Data $cntOut, count of parametrs not equel ! ;echo !!! ${eVarIN[@]} === ${eDatLine[@]}
				continue # while read Line

			fi

			#
			# main check for compare tabale value and var value in currient string
			#
			((cmpCnt=0))
			for (( i = 0 ; i < cntOut ; i++ ))	do	#get input data
				if [ "${eDatLine[${i}]}" == "${eInOutDevisor}" ] ; then
					((outBgn=i + 1))
					break
				fi
#    	echo DEBUG Element [$i]: ${eDatLine[$i]} val=${!eDatLine[$i]}  eDatLine=${eDatLine[${i}]} == eVarDatIN="${eVarDatIN[$i]}"
				if [ "${eDatLine[${i}]}" == "${eVarDatIN[$i]}" ]  ; then
#		echo ${eDatLine[${i}]} == ${eVarDatIN[$i]}
					((cmpCnt++))
					eDataIN[$i]=${eDatLine[${i}]}

				fi
				if [[ "${eDatLine[${i}]}" ==  "${eANY}"  ]]  ; then
#					echo ${eDatLine[${i}]} == ${eVarDatIN[$i]}
					((cmpCnt++))
					eDataIN[$i]=${eDatLine[${i}]}
				fi
				if [[ "${eDatLine[${i}]}" ==  "${eNOTEMPTY}"  &&  "${eVarDatIN[$i]}" != "" ]]  ; then
#					echo ${eDatLine[${i}]} == ${eVarDatIN[$i]}
					((cmpCnt++))
					eDataIN[$i]=${eDatLine[${i}]}
				fi
				if [[ "${eDatLine[${i}]}" ==  "${eEMPTY}"  &&  "${eVarDatIN[$i]}" == "" ]]  ; then
#					echo ${eDatLine[${i}]} == ${eVarDatIN[$i]}
					((cmpCnt++))
					eDataIN[$i]=${eDatLine[${i}]}
				fi

			done

#		echo DEBUG "$cmpCnt" == "(($outBgn - 1 ))"     outBgn=$outBgn cntIn=$cntIn


			if (( "$cmpCnt" == "(($outBgn - 1 ))" )) # there are data in this string  #${#eVarIN[@]}
			then

				(( j = 0 ))
				for (( i = $outBgn ; i < cntOut ; i++ ))	do # get value for  output vars
						eDataOUT[$j]=${eDatLine[$i]}
#				    	echo "DEBUG ${eVarOUT[$j]}=${eDataOUT[$j]}"
						((j++))
				done

				(
					for (( i = 0 ; i < ${#eVarOUT[@]} ; i++ ))	do
				    	echo "${eVarOUT[$i]}=\"${eDataOUT[$i]}\""
					done
				) >> $eTmpFile # create temporary file for setap vars
                eIsFind=1
#				echo OK:  ${eVarIN[@]} == ${eDataIN[@]} '=>' ${eVarOUT[@]} == ${eDataOUT[@]}
			fi

		fi


	else #skeep empty and commets lines
#			echo Comment: $Line
		eDeb=""	# for skeep warning
	fi

done #while read Line
######################################################################3



IFS=$OLD_IFS

#rm $eTmpFile