122 lines
2.0 KiB
Bash
Executable File
122 lines
2.0 KiB
Bash
Executable File
#!/bin/bash
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# Jack-Benny Persson
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# LX13
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# Övning 4, labb 5
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# Grade-calculation script
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# Set some defaults
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G=30
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VG=48
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Form=form.txt
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# Function to print the students grade and points
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print_grade()
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{
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echo "Your total points on the test was: $Total"
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if [ $Total -lt $G ]; then
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echo "Your grade is: IG"
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elif [ $Total -ge $VG ]; then
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echo "Your grade is: VG"
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else
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echo "Your grade is G"
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fi
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exit 0
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}
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# Define help functions
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short_help()
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{
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printf "Usage: `basename $0` -f <filename>"
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printf " -o <filename> -G <int> -VG <int>\n"
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}
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long_help()
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{
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short_help
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cat <<- EOF
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-f Optional filename to read the form data from.
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-o Optional output file for the points and grade.
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-G Number of minimum points for a grade G (Default is 30).
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-VG Number of minimum points for a grade VG (Default is 48).
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EOF
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}
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# Pass command line arguments
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while [ -n "$1" ]; do
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case "$1" in
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-f) Arg="$2"
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if [ ! -r $Arg ]; then
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echo "Can't read $Arg" > /dev/stderr
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short_help
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exit 2
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fi
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Form="$Arg"
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shift 2
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;;
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-o) Outfile="$2"
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if [ ! -w `dirname $Outfile` ]; then
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echo "You can't write to `dirname $Outfile`"\
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> /dev/stderr
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exit 2
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fi
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shift 2
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;;
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-G) G=$2
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shift 2
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;;
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-VG) VG=$2
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shift 2
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;;
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-h) long_help
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exit 0
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;;
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*) short_help
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exit 2
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;;
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esac
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done
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# Check if the file exist and that we can read it
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if [ ! -r $Form ]; then
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echo "Can't read $Form" > /dev/stderr
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short_help
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exit 2
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fi
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# Get all the points
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Points=( `tail -n +3 $Form | awk '{print $1}'` )
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# Check that we only have int's in our array and print help
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for l in ${Points[*]}; do
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if ! [ "$l" -eq "$l" &> /dev/null ]; then
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cat <<- EOF
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Something is wrong with the formatting of $Form
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Correct formatting should look like this:
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Points Question
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------ --------
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1 Question 1
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1 Question 2
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4 Question 4
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EOF
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exit 2
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fi
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done
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# Calculate the points from the form
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Total=0
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for i in ${Points[*]}; do
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Total=$((Total+i))
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done
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# Print the total points and grade
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if [ -n $Outfile ]; then
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print_grade > $Outfile
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else
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print_grade
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fi
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