#!/bin/bash

file1="spring2011-20101105.html"
file2="spring2011output.txt"
file3="spring2011output2.txt"

cat $file1 | egrep '^(<TH CLASS="ddtitle"|<TD CLASS="dddefault">.*</TD>$|Credits)' \
| sed 's/^.*crn_in=[0-9]\{5\}">\(.*\) - \([0-9]\{5\}\) - \([A-Z]\{3,4\} [0-9]\{4\}\) - \([0-9]\{3\}\)<\/A.*$/\2:\3-\4:\1/g' \
| sed 's/^<TD.*ault">\(.*\)<\/TD>$/\1/g' | sed 's/(<ABB.*$//g' | sed 's/^.*TBA.*$/TBA/g' \
| sed 's/^&nbsp;$/NA/g' | sed 's/^ *//g' > $file2

cat -n $file2 | sed 's/^ *//g' | sed 's/\t/,/' | sed 's/ /*/g' \
| grep '^[0-9][0-9]*,[0-9]{5}' | sed 's/,/:/' > $file3

filecontent=( `cat $file3 `)
for t in "${filecontent[@]}"; do
    line=$(echo $t | cut -d":" -f1)
    crn=$(echo $t | cut -d":" -f2)
    classcode=$(echo $t | cut -d":" -f3)
    description=$(echo $t | cut -d":" -f4)
    echo -e "$crn\n$classcode\n$description" > "classlists/$crn.txt"
done

echo "Enter a CRN to look up."
read crnlookup
clear
cat classlists/$crnlookup.txt | sed 's/*/ /g'

answer=true
while ($answer -eq true); do
    echo ""
    echo "Do you want to look up another CRN y/n?"
    read answers
    clear
    if [ $answers = 'y' ]; then
        answer=true
        echo "Enter a CRN to look up."
        read crnlookup
        cat classlists/$crnlookup.txt
    else
        answer=false
    fi
done

exit 0