--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/update.sh	Tue Jan 11 21:58:52 2011 +0200
@@ -0,0 +1,46 @@
+#!/bin/sh
+URLPREFIX="http://www.oamk.fi/tyojarjestykset/otek/luokat/"
+URLSUFFIX=".htm"
+CACHEDIR="cache/"
+LISTFILE="luokat.tmp"
+CLASSFILE="luokat.txt"
+
+
+if wget -q -O "$LISTFILE" "$URLPREFIX"; then
+	perl -ne 'if (/<a href="OR_([A-Z]{3}\d\S+)\.htm">/) { print "$1\n"; }' < "$LISTFILE" > "$CLASSFILE"
+fi
+
+
+cat "$CLASSFILE" | while read i; do
+	parse=no
+	INFILE="${CACHEDIR}${i}.html"
+	wget -q -O "$INFILE.new" "${URLPREFIX}OR_${i}${URLSUFFIX}"
+
+	if test -e "$INFILE.new"; then
+		# New data fetched, does old file exist?
+		if test -e "$INFILE"; then
+			# Yes, do a diff
+			if diff "$INFILE" "$INFILE.new"; then
+				# There were differences, do a parse
+				parse=yes
+				mv "$INFILE.new" "$INFILE"
+			fi
+		else
+			# No old file, parse new data
+			mv "$INFILE.new" "$INFILE"
+			parse=yes
+		fi
+	else
+		# No new file fetched, does datafile exist?
+		if test ! -e "$i.data"; then
+			# No, try to parse it if old file input exists
+			parse=yes
+		fi
+	fi
+
+	# Parsing of old data requested?
+	if test "x$parse" = "xyes" -a -e "$INFILE"; then
+		perl parsedata.pl -php "$INFILE" -o "${CACHEDIR}/$i.data"
+	fi
+done
+