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|
#! /bin/sh
#
# NAME
# mobile.vvs.de - web scraper for VVS departure information
#
# SYNOPSIS
# mobile.vvs.de ORIGIN [HH [MM [YYmmdd]]]
#
# DESCRIPTION
# The mobile.vvs.de utility fetches departure information from the
# Internet and prints the results to standard output.
#
# OPERANDS
# ORIGIN The point of departure.
#
# HH, MM, YYmmdd
# The time and date of departure. Defaults to the current
# time and date.
#
# STDIN
# Not used.
#
# INPUT FILES
# None.
#
# ENVIRONMENT VARIABLES
# The following environment variables affect the execution of mobile.vvs.de:
#
# limit Limits the number of entries to be fetched.
#
# origin, H, M, Ymd
# Provide defaults operands. If origin is set, then ORIGIN
# becomes optional. The order of the operands doesn't change
# by these variables. These variables are overridden by the
# operands.
#
# ASYNCHRONOUS EVENTS
# Defaults.
#
# STDOUT
# The first line has the format:
#
# "\e[4m%s:%s %s\e[m\n", H, M, origin_real_name
#
# where H and M are the corresponding provided or default operands.
# origin_real_name is the real name of the point of departure.
#
# The subsequent lines specify the departing means of transport.
# Each line has the format:
#
# "%s %s → %s\n", time_of_departure, line_number, destination
#
# where time_of_departure is self-evident, and line_number and
# destination identify the route and direction.
#
# STDERR
# Not used.
#
# OUTPUT FILES
# None.
#
# EXTENDED DESCRIPTION
# None.
#
# EXIT STATUS
# 0 A departure board could be fetched.
#
# 1 ORIGIN doesn't specify an acceptable point of departure.
#
# EXAMPLES
# 1. Get the top three current departures at Stuttgart, Hauptbahnhof:
#
# $ limit=3 mobile.vvs.de hauptbahnhof
#
# FUTURE DIRECTIONS
# None.
#
# BUGS
# The format of STDOUT suffers from bit rot.
#
# SEE ALSO
# 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
ltrim() {
sed "s/^[${1-$symbols}]*//"
}
POST() {
## TODO url-encode, trim
tr '\n' '&' | sed 's/&$//' |
w3m -config /dev/null -cols 256 -post /dev/stdin -dump "${1-$URI}"
}
limit=${limit-10}
origin="${1-$origin}"
H="${2-${H-`date +%H`}}"
M="${3-${M-`date +%M`}}"
Ymd="${4-${Ymd-`date +%Y%m%d`}}"
URI='http://mobil.vvs.de/mobile/XSLT_DM_REQUEST'
echo "
sessionID=0
requestID=0
language=de
locationServerActive=1
useRealtime=1
anySigWhenPerfectNoOtherMatches=1
limit=$limit
deleteAssignedStops_dm=1
mode=direct
convertCrossingsITKernel2LocationServer=1
convertStopsPTKernel2LocationServer=1
convertAddressesITKernel2LocationServer=1
convertPOIsITKernel2LocationServer=1
itdLPxx_dest=
useAllStops=1
maxAssignedStops=1
itOptionsActive=1
trITMOTvalue100=5
ptOptionsActive=1
useProxFootSearch=0
w_regPrefAm=1
w_objPrefAl=2
w_objPrefAl=12
itdLPxx_script=true
place_dm=
placeState_dm=empty
nameState_dm=empty
nameInfo_dm=invalid
typeInfo_dm=invalid
placeInfo_dm=invalid
reducedAnyWithoutAddressObjFilter_dm=103
reducedAnyPostcodeObjFilter_dm=64
reducedAnyTooManyObjFilter_dm=2
anyObjFilter_dm=126
type_dm=any
name_dm=$origin
itdTimeHour=`echo $H | ltrim 0`
itdTimeMinute=`echo $M | ltrim 0`
itdDate=$Ymd
" | POST "$URI" | sed -rn '
s/^Von:[^[:alpha:]]+(.*)$/[4m'$H:$M' \1[m/p
/Haltestelle/,/^ *$/{
/Haltestelle|^ *$/!{
s/[[:space:]]*\[info\][[:space:]]*$//
p
}
}
' | {
read
echo "$REPLY"
while read time dev no dest ; do
printf "$time %3s → %s\n" $no "$dest"
done
}
####
|
