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bgs.js
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bgs.js
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#!/usr/bin/env node
// config
var BASE_URL = "http://fbinter.stadt-berlin.de/rbs/rbs-slct-str-liste.jsp";
var NUMBER_URL = "http://fbinter.stadt-berlin.de/rbs/rbs-slct-hnr-liste.jsp";
var DETAIL_URL = "http://fbinter.stadt-berlin.de/rbs/rbs-show-data-text.jsp";
// get node modules
var fs = require("fs");
var path = require("path");
var url = require("url");
// get npm modules
var scrapyard = require("scrapyard");
var debug = require("debug")("bgs");
// get local modules
var soldner = require(__dirname+"/lib/soldner.js");
// initialize scrapyard
var scraper = new scrapyard({
retries: 3,
connections: 3,
cache: './cache',
bestbefore: "24h"
});
var fetch_streets = function(callback){
var _fetched = 0;
var _result = [];
["01","02","03","04","05","06","07","08","09","10","11","12"].forEach(function(beznr){
scraper.scrape({
url: BASE_URL+"?beznr="+beznr+"&go=go&stop=window",
type: "html",
encoding: "utf8"
}, function(err, $){
_fetched++;
if (err) return callback(err);
debug("fetched streets for bezirk %d", beznr);
$('form.query tr').each(function(){
// filter additional rows for streets in two districts
if ($('td', this).length === 1) return;
_result.push({
number: $("td input[name=strnr]", this).attr('value'),
name: $("td font", this).eq(0).text().replace(/^\s+|\s+$/g,'').replace(/\s+/g,' ')
});
});
if (_fetched === 12) callback(null, _result);
});
});
};
var fetch_numbers = function(street, callback){
// debug("fetching numbers for %s", street.name);
scraper.scrape({
url: NUMBER_URL+"?strnr="+street.number+"&strname="+street.name+"&go=go&stop=window",
type: "html",
encoding: "utf8"
}, function(err, $){
if (err) return callback(err);
var result = [];
$('form tr td input[name=hausnr]').each(function(idx, $r){
result.push({
strnr: street.number,
hausnr: $(this).attr('value'),
name: street.name,
nummer: $(this).parent().parent().find("td").eq(1).text()
});
});
callback(null, result);
});
};
var fetch_details = function(data, callback){
// debug("fetching details for %s %s", data.name, data.hausnr);
data.url = DETAIL_URL+"?strnr="+data.strnr+"&strname="+data.name+"&hausnr="+data.hausnr+"&go=go&stop=window";
scraper.scrape({
url: data.url,
type: "html",
encoding: "utf8"
}, function(err, $){
if (err) {
callback(err);
} else {
$('table.hnrresult > tbody > tr').each(function(idx,e){
var k = $(this).find("td").eq(0).text().replace(/^\s+|\s+$/g,'');
switch(k) {
case "Adresse":
data.addresse = $(this).find("td").eq(1).text().replace(/^\s+|\s+$/g,'');
break;
case "PLZ":
data.plz = $(this).find("td").eq(1).text().replace(/^\s+|\s+$/g,'');
break;
case "Bezirk":
var v = $(this).find("td").eq(1).text().replace(/^\s+|\s+$/g,'').split(/\s+\/\s+/g);
data.berzirk_name = v[0];
data.berzirk_nr = v[1];
break;
case "Ortsteil":
var v = $(this).find("td").eq(1).text().replace(/^\s+|\s+$/g,'').split(/\s+\/\s+/g);
data.ortsteil_name = v[0];
data.ortsteil_nr = v[1];
break;
case "Straßen-Nr. / -abschnitt":
var v = $(this).find("td").eq(1).text().replace(/^\s+|\s+$/g,'').split(/\s+\/\s+/g);
data.strasse_nr = v[0];
data.strasse_abschnitt_nr = v[1];
break;
case "Karten":
var karten = [];
$(this).find("td").eq(1).find("tr").each(function(idx,e){
karten.push([
$(this).find("td").eq(0).text().replace(/^\s+|\s+$/g,'').replace(/:$/,'').replace(/\./,''),
$(this).find("td").eq(1).text().replace(/^\s+|\s+$/g,'')
].join('='));
});
data.karten = karten.join(',');
break;
case "Soldner-Koordinaten":
var v = [
$(this).find("td").eq(1).find("tr").eq(0).find("td").eq(1).text(),
$(this).find("td").eq(1).find("tr").eq(1).find("td").eq(1).text(),
];
data.soldner_x = parseInt(v[0],10);
data.soldner_y = parseInt(v[1],10);
break;
case "ETRS89-Koordinaten":
var v = [
$(this).find("td").eq(1).find("tr").eq(0).find("td").eq(1).text(),
$(this).find("td").eq(1).find("tr").eq(1).find("td").eq(1).text(),
];
data.etrs89_x = parseInt(v[0],10);
data.etrs89_y = parseInt(v[1],10);
break;
case "stat.Geb./Block":
var v = $(this).find("td").eq(1).text().replace(/^\s+|\s+$/g,'').split(/\s+\/\s+/g);
data.stat_gebiet = v[0];
data.stat_block = v[1];
break;
case "Einschulungsbezirk":
data.einschulungsbezirk = $(this).find("td").eq(1).text().replace(/^\s+|\s+$/g,'');
break;
case "Verkehrsfläche / -teilfläche":
var v = $(this).find("td").eq(1).text().replace(/^\s+|\s+$/g,'').split(/\s+\/\s+/g);
data.verkehrsflaeche = v[0];
data.verkehrsteilflaeche = v[1];
break;
case "Mittelbereich":
data.mittelbereich = $(this).find("td").eq(1).text().replace(/^\s+|\s+$/g,'');
break;
case "Prognoseraum":
var v = $(this).find("td").eq(1).text().replace(/^\s+|\s+$/g,'').split(/\s+\/\s+/g);
data.prognoseraum_name = v[0];
data.prognoseraum_nr = v[1];
break;
case "Bezirksregion":
var v = $(this).find("td").eq(1).text().replace(/^\s+|\s+$/g,'').split(/\s+\/\s+/g);
data.bezirksregion_name = v[0];
data.bezirksregion_nr = v[1];
break;
case "Planungsraum":
var v = $(this).find("td").eq(1).text().replace(/^\s+|\s+$/g,'').split(/\s+\/\s+/g);
data.planungsraum_name = v[0];
data.planungsraum_nr = v[1];
break;
case "Finanzamt":
var v = $(this).find("td").eq(1).text().replace(/^\s+|\s+$/g,'').split(/\s+\/\s+/);
if (typeof v[1] !== "undefined") v[1] = v[1].replace(/, /g, ", ");
data.finanzamt_nr = v[0];
data.finanzamt_addr = v[1];
break;
default:
debug("unknown key %s", k);
break;
}
});
if (("soldner_x" in data) && typeof data.soldner_x === "number" && !isNaN(data.soldner_x) && ("soldner_y" in data) && typeof data.soldner_y === "number" && !isNaN(data.soldner_y)) {
var coord = soldner(data.soldner_x, data.soldner_y);
data.lon = coord[0];
data.lat = coord[1];
} else {
data.lon = null;
data.lat = null;
}
callback(null,data);
}
});
};
(function() {
// fetch counters
var count_fetchable = 0;
var count_fetched = 0;
// monitor
var monitor = setInterval(function(){
if (count_fetchable === 0) return("nothing to fetch yet");
debug("fetched %d/%d", count_fetched, count_fetchable);
},10000);
fetch_streets(function(err,streets){
debug("loaded %d streets", streets.length);
count_fetchable += streets.length;
streets.forEach(function(street){
fetch_numbers(street, function(err,numbers){
count_fetchable += numbers.length;
count_fetched++;
numbers.forEach(function(number){
fetch_details(number, function(err,data){
if (count_fetched === 0) process.stdout.write(["strnr","hausnr","name","nummer","addresse","plz","berzirk_name","berzirk_nr","ortsteil_name","ortsteil_nr","strasse_nr","strasse_abschnitt_nr","karten","soldner_x","soldner_y","etrs89_x","etrs89_y","stat_gebiet","stat_block","einschulungsbezirk","verkehrsflaeche","verkehrsteilflaeche","mittelbereich","prognoseraum_name","prognoseraum_nr","bezirksregion_name","bezirksregion_nr","planungsraum_name","planungsraum_nr","finanzamt_nr","finanzamt_addr","lon","lat","url"].join("\t")+"\n");
count_fetched++;
if (err) debug("error: %s", err);
if (typeof data !== "object") debug("error: data is %s", (typeof data));
if (!err && typeof data === "object") process.stdout.write([data.strnr,data.hausnr,data.name,data.nummer,data.addresse,data.plz,data.berzirk_name,data.berzirk_nr,data.ortsteil_name,data.ortsteil_nr,data.strasse_nr,data.strasse_abschnitt_nr,data.karten,data.soldner_x,data.soldner_y,data.etrs89_x,data.etrs89_y,data.stat_gebiet,data.stat_block,data.einschulungsbezirk,data.verkehrsflaeche,data.verkehrsteilflaeche,data.mittelbereich,data.prognoseraum_name,data.prognoseraum_nr,data.bezirksregion_name,data.bezirksregion_nr,data.planungsraum_name,data.planungsraum_nr,data.finanzamt_nr,data.finanzamt_addr,data.lon,data.lat,data.url].join("\t")+"\n");
if (count_fetched === count_fetchable) {
clearInterval(monitor);
debug("done");
}
});
})
});
});
});
})();