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#! /bin/sh
#
# NAME
# vvs.de - web scraper for VVS departure information
#
# SYNOPSIS
# vvs.de ORIGIN DESTINATION
#
# EXAMPLES
# $ vvs.de Hauptbahnhof Renningen
#
# CAVEATS
# Acceptable operands have to be found by trial and error.
#
# BUGS
# Probably bit rot.^_^
#
# SEE ALSO
# mobile.vvs.de
#
# COPYRIGHT
# All departure information is copyrighted by Verkehrs- und
# Tarifverbund Stuttgart GmbH. The original copyright statement can
# be obtained online at http://www.vvs.de/impressum .
#
# The following code is your fault.
#
set -euf
# <form action="./efaanyfield/anyfield.php" method="post" id="efaForm">
#s/itdDateDay=/&${3-$itdDateDay}/
#s/itdDateMonth=/&${4-$itdDateMonth}/
#s/itdDateYear=/&${5-$itdDateYear}/
vvs_tmp=/tmp/vvs.tmp
curl -Ss http://www.vvs.de/fahrplan/ |
sed -rn "/<!-- EFA -->/,/<!-- \/EFA -->/{
s.*<input.*name=\"([^\"]*)\".*value=\"([^\"]*)\".*/>.*\1=\2;T
/itdTripDateTimeDepArr=arr/b
s/(name_origin=).*/\1${1-$name_origin}/
s/(name_destination=).*/\1${2-$name_destination}/
${3+s/(itdTimeHour=).*/\1${3-$itdTimeHour}/}
${4+s/(itdTimeMinute=).*/\1${4-$itdTimeMinute}/}
p
}" | tr '\n' '&' | sed 's/&$//' >"$vvs_tmp"
#while read line ; do
# test -z "$line" || echo "$line"
#done >"$vvs_tmp"
echo from: ${1-$name_origin}
echo \ \ to: ${2-$name_destination}
echo '-------------------------------------'
w3m -cols 9423 -post "$vvs_tmp" \
-dump http://www.vvs.de/./efaanyfield/anyfield.php |
sed -rn "
s/^ +[0-9]+ +([0-9]+:[0-9]+) +([0-9]+:[0-9]+) +([A-Z0-9 ,]+) .*$/\1 \2 \3/p
" | tr -d ,
####
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