Skript

#!/bin/bash

# Julian Gauger s82814

# Lists all valid parameters

listParameter(){

	echo "Invalid parameter. Please use one of the following keywords:"
	echo -e "(txxxxx | stat | all | plag)\n"
}

if [ -z $1 ]
then
	listParameter
	exit 1

else
	if [ ${1:0:1} == "t" ]
	then
		if [ ! -f "$1" ]
		then 
			echo -e "File missing. Please import $1 to this path.\n"
			exit 1
		else 
			FILE=$1
			Points=0
			FIRSTLINE=$(head -n 1 "$FILE")
			echo "Test,if in the first line is a shebang"	
				if [ ${FIRSTLINE:0:2} == "#!" ]
				then
					echo "Test sucessful"
					Points=$(($Points + 1))
				else
					echo "Test failed"
				fi

#Test how many lines start with a #

			Commentlines=$(grep -c "#.*$" $FILE)

#Test how many lines are in the file

			AllLines=$(grep -c ".*" $FILE)

#Calculate percentage of Commentlines 

			echo "Test, if more than 10% of the lines are comment lines"
			Percentage=$(echo "scale=4; ($Commentlines/$AllLines)*100" | bc)
                        if [ $(echo "$Percentage > 10" | bc) -ne 0 ]
			then
				echo "Test sucessful"
				Points=$(($Points + 1))
			else
				echo "Test failed"
			fi


#Count all exit statements

			AllExitStatements=$(grep -c "exit" $FILE)

#Count all exit statements in comment lines

			ExitStatementsCommentary=$(grep "#.*$" $FILE | grep -cw "exit")

#Calculate the exit statements in the Code without the statements in comment lines

			ExitStatementsCode=$(echo $(($AllExitStatements - $ExitStatementsCommentary)))

#If u have more than 0 exit statements outside the comment lines u get a point

			echo "Test, if you have more than 0 exit statements outside comment lines"
			if [ $ExitStatementsCode -gt "0" ]
			then
				Points=$(($Points + 1))
				echo "Test sucessful"
			else
				echo "Test failed"
			fi


#Call the File and analyze return value

			echo "Test, if the return vaue of the called file is not 0"
			./$FILE </dev/null >/dev/null
			if [ $? -ne 0 ];
			then
				Points=$(($Points + 1))
				echo "Test sucessful"
			else
				echo "Test failed"
			fi

#Call the file with the parameter "count", stdout should be the number of lines in bib.csv
			
			Output=0
			Output=$(./$FILE count ) 	
			Output=$(echo "$Output" | grep -o -E "[0-9]{3}")

#Count the lines of bib.csv

			Linesofbib=$(grep -c ".*" bib.csv)

#Look if they are the same number

			echo "Test if count works correctly"
			if [ "$Linesofbib" == "$Output" ]
			then
				Points=$(($Points + 1))
				echo "Test sucessful"
			else
				echo "Test failed"
			fi
			
			echo "Maximum amount of Points:5"
			echo "You have reached $Points Points"

		fi
		exit 0
        
	

	elif [ $1 == "stat" ]
	then

#Name and size of the smallest data


		echo "Smallest File:"
		du -bh t* | sort -h | head -1

#Name and size of the biggest data
		
		echo "Biggest File:"
		du -bh t* | sort -hr | head -1


#Arithmetic mean of the files

		echo "Arithmetic mean:"
		SizeofFile=$(du -c t* | tail -1)
		SizeofFile=${SizeofFile//insgesamt/}
		NumberofFiles=$(find t* | wc -l)
		ArithmeticMean=$(echo "scale=4; ($SizeofFile / $NumberofFiles)" | bc)
		echo "$ArithmeticMean"
		exit 0		
	

	elif [ $1 == "all" ]
	then
		yourfilenames=$(ls ./)
		for eachfile in $yourfilenames
		do
			if [ ${eachfile:0:1} == "t" ]
			then

				FILE=$eachfile
				FIRSTLINE=$(head -n 1 "$FILE")
				if [ ${FIRSTLINE:0:2} == "#!" ]
				then
					Points=$(($Points + 1))
				fi

				Commentlines=$(grep -c "#.*$" $FILE)
				AllLines=$(grep -c ".*" $FILE)
				Percentage=$(echo "scale=4; ($Commentlines/$AllLines)*100" | bc)

				if [ $(echo "$Percentage > 10" | bc) -ne 0 ]
				then
					Points=$(($Points + 1))
				fi

				AllExitStatements=$(grep -c "exit" $FILE)
				ExitStatementsCommentary=$(grep "#.*$" $FILE | grep -cw "exit")
				ExitStatementsCode=$(echo $(($AllExitStatements - $ExitStatementsCommentary)))

				if [ $ExitStatementsCode -gt "0" ]
				then
					Points=$(($Points + 1))
				fi
				# Skript hängt bei diesem Beleg, da dieser Beleg ein Case-Statement benutzt.
				# Solange man nicht einen richtigen Parameter eingibt bleibt man dort sozusagen "gefangen"
				# Ich habe vieles versucht (z.B. unteren Code als Funktion mit einem timeout in einer Subshell aus-
				# zuführen etc. aber nichts hat funktioniert.
				if [ "$FILE" != "t21707" ]
				then
				
				./"$FILE" </dev/null >/dev/null
				if [ $? -ne 0 ]
				then	
					Points=$(($Points + 1))
				fi
				
			        Output=0
			        Output=$(./$FILE count ) 	
				Output=$(echo "$Output" | grep -o -E "[0-9]{3}")

				Linesofbib=$(grep -c ".*" bib.csv)

				if [ "$Linesofbib" == "$Output" ]
				then
					Points=$(("$Points" + 1))
				fi
				fi

				if [ $Points != 5 ]
				then 
					echo "$FILE"
				fi
				
				Points=0
				

			fi
		done
		exit 0


	elif [ $1 == "plag" ]
	then
	
		for i in ./t*;do
			for j in ./t*;do
				if [ "$i" \> "$j" ];
				then
					diff -q "$i" "$j" >/dev/null
					if [ $? -eq 0 ]
					then
						echo "File $i and $j are the same"
					fi
				fi
			done
		done
	exit 0

	else 
	listParameter	
	exit 1
	fi
fi

if [ $? -ne 0 ]
then
	echo "Error"
	exit 1
fi