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#!/bin/sh
CACHEDIR=$HOME/.cache/pagecheck
CACHEFILE=$CACHEDIR/pagecheck.cache
PROG=$(basename $0)
NEWFILE=$CACHEDIR/pagecheck.new
WRAPWIDTH=80
function print_new()
{
sed -e"s/\\\\e/\x1b/g" <<EOT
================================================================================
\e[1mModified: $(stat -c %y $NEWFILE)\e[0m
================================================================================
$(cat $NEWFILE)
================================================================================
EOT
}
case "$1" in
-s|--seen)
rm $NEWFILE 2>/dev/null
exit 1
;;
-h|--help)
echo "Usage: $PROG [[-h|--help] | [-s|--seen] | [regexp] [url] [email]]"
exit 1
;;
esac
if [ $# -lt 2 ]; then
if [ -f "$NEWFILE" ]; then
print_new
else
echo "$PROG: Nothing new"
fi
exit 0
fi
TMPFILE=$(mktemp --tmpdir -q pagecheck.XXXXX)
REGEXP=$1
URL=$2
EMAIL=$3
mkdir -p $CACHEDIR
touch $CACHEFILE
curl -s $URL | grep $REGEXP | sed -e's/<p>/\\n\\n/g' | \
sed -e's/<[^>]\+>//g' -e's/\s\+/ /g' -e's/^\s\+//g' > $TMPFILE
if grep -v -f $CACHEFILE $TMPFILE &>/dev/null; then
cat $TMPFILE | sed -e's/\\n\\n/\n\n/g' | sed "s/.\\{$WRAPWIDTH\\}/&\\n/g" > $NEWFILE
print_new | neomutt -s "[$PROG] New update" $EMAIL
print_new
cat $TMPFILE >> $CACHEFILE
fi
rm $TMPFILE