watch.sh

#!/bin/bash
# Copyright 2009 ORY Mate <[email protected]> http://maat.orgo2002.hu

#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.

function cleanup() {
    rm -f /tmp/wl*
}
trap  cleanup EXIT

case "$1" in
+) # hozzaadas
    echo URL: 
    read A1
    echo Parameterek: 
    read A2
    echo Komment:
    read A5
    echo "$A1|$A2|||$A5" >> ~/.watchlist
    exit 2
    ;;

-l) # listazas
    cat ~/.watchlist | awk 'BEGIN {FS="|";}
    {i++; printf("[%d]\t%s\t%s\n\t\t%s\n", i, $1, $2, $5);}'
    exit 2
    ;;

-d) # inaktivalas
    if [ ! "x$2" = 'x' ]
    then
        ed ~/.watchlist <<E &>/dev/null
        $2 s/^/#/
        w
E
    fi
    exit 2
    ;;
-a) # aktivalas
    if [ ! "x$2" = 'x' ]
    then
        ed ~/.watchlist <<E &>/dev/null
        $2 s/^#//
        w
E
    fi
    exit 2
    ;;

-c) # frissites
    TMP="/tmp/wl$$"
    rm -f $TMP ${TMP}2 || ( echo "Atmeneti allomany nem hozhato letre" >&2 && exit 1 )
    cat ~/.watchlist | grep -v '^$' | (
    while read A; [ ! "x$A" = x ]
    do
        echo $A | grep '^#' >> $TMP && continue
    
        A1="`echo "$A" | cut -d'|' -f1`" # URL
        A2="`echo "$A" | cut -d'|' -f2`" # parameterek
        A3="`echo "$A" | cut -d'|' -f3`" # allapot
        A4="`echo "$A" | cut -d'|' -f4`" # hash
        A5="`echo "$A" | cut -d'|' -f5`" # komment
    
        curl -Lf $A2 "$A1" > ${TMP}2 2>/dev/null
        B3=$?
    
        B4="`cat "${TMP}2" | md5sum - | sed 's/ .*$//'`"
    
        if [ \( "${A3}0" -ne 0 \) -a \( "${B3}0" -ne "${A3}0" \) ]
        then
            echo "$A1 allapota valtozott: $A3 -> $B3" >&2
        elif [ ! "$A4" '=' "$B4" ]
        then
            echo "$A1 megvaltozott" >&2
        fi
        echo "$A1|$A2|$B3|$B4|$A5" >> $TMP
    done
    
    )
    cp "$TMP" ~/.watchlist || ( echo ~/.watchlist nem irhato >&2 && exit 1 )
    rm "$TMP"
    ;;

* ) # segitseg
    cat <<-. >&2
    $0 -c       frissites
    $0 -l       listazas
    $0 +        uj bejegyzes (interaktiv)
    $0 -a N     N. bejegyzes aktivalasa
    $0 -d N     N. bejegyzes deaktivalasa
.
    exit 1
    ;;
esac