/* This file is part of Beifahrer.
*
* Copyright (C) 2010 Philipp Zabel
*
* Beifahrer 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.
*
* Beifahrer 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 Beifahrer. If not, see .
*/
[Compact]
public class City {
public int number;
public string name;
public double latitude;
public double longitude;
public double north;
public double south;
public double east;
public double west;
public City (int _number, string _name) {
number = _number;
name = _name;
latitude = 0.0;
longitude = 0.0;
}
internal double bb_area () {
return (north - south) * (east - west);
}
}
public enum LiftFlags {
SMOKER = 1,
NON_SMOKER = 2,
ADAC_MEMBER = 4,
WOMEN_ONLY = 8
}
public class Lift : Object {
public string city_from;
public string city_to;
public string date;
public string time;
public int places;
public string price;
public LiftFlags flags;
public string href;
public List city_via;
public string name;
public string cell;
public string phone;
public string phone2;
public string email;
public string description;
public string modified;
}
public class AdacMitfahrclub {
const string BASE_URI = "http://mitfahrclub.adac.de";
string response;
int size;
List city_list = null;
static size_t write_memory_cb (void* ptr, size_t size, size_t nmemb, void* data) {
unowned AdacMitfahrclub self = (AdacMitfahrclub) data;
self.response += ((string) ptr).ndup (size * nmemb);
self.size += (int) (size * nmemb);
return size * nmemb;
}
private Html.Doc* get_html_document (string url) {
var handle = new Curl.EasyHandle ();
handle.setopt (Curl.Option.URL, url);
handle.setopt (Curl.Option.WRITEFUNCTION, write_memory_cb);
handle.setopt (Curl.Option.WRITEDATA, (void*) this);
this.response = "";
this.size = 0;
handle.perform ();
return Html.Doc.read_memory ((char[]) this.response, this.size,
url, null, Html.ParserOption.NOERROR | Html.ParserOption.NOWARNING);
}
private void save_city_list () {
FileStream list_file = FileStream.open ("/home/user/.cache/beifahrer/city_list", "w");
if (list_file == null)
return;
foreach (unowned City city in city_list) {
if (city.north != 0.0 || city.south != 0.0 || city.east != 0.0 || city.west != 0.0)
list_file.printf ("%d\t%s\t%f\t%f\t%f\t%f\t%f\t%f\n", city.number, city.name, city.latitude, city.longitude, city.north, city.south, city.east, city.west);
else if (city.latitude != 0.0 || city.longitude != 0.0)
list_file.printf ("%d\t%s\t%f\t%f\n", city.number, city.name, city.latitude, city.longitude);
else
list_file.printf ("%d\t%s\n", city.number, city.name);
}
}
private bool load_city_list () {
FileStream list_file = FileStream.open ("/home/user/.cache/beifahrer/city_list", "r");
if (list_file == null)
list_file = FileStream.open ("/usr/share/beifahrer/city_list", "r");
if (list_file == null)
return false;
city_list = new List ();
string line = list_file.read_line ();
while (line != null) {
var split_line = line.split ("\t");
if (split_line.length < 2)
continue;
int number = split_line[0].to_int ();
weak string name = split_line[1];
var city = new City (number, name);
if (split_line.length >= 4) {
city.latitude = split_line[2].to_double ();
city.longitude = split_line[3].to_double ();
}
if (split_line.length >= 8) {
city.north = split_line[4].to_double ();
city.south = split_line[5].to_double ();
city.east = split_line[6].to_double ();
city.west = split_line[7].to_double ();
}
city_list.append ((owned) city);
line = list_file.read_line ();
}
return true;
}
public unowned List? get_city_list () {
if (city_list != null)
return city_list;
if (load_city_list ())
return city_list;
var doc = get_html_document (BASE_URI);
if (doc == null) {
print ("Error: parsing failed");
print ("%s\n", this.response);
return null;
}
var form = search_tag_by_id (doc->children, "form", "search_national_form");
if (form == null) {
print ("Error: does not contain search_national_form");
print ("%s\n", this.response);
return null;
}
var select = search_tag_by_name (form->children, "select", "city_from");
if (select == null) {
print ("Error: does not contain city_from");
print ("%s\n", this.response);
return null;
}
city_list = new List ();
for (var n = select->children; n != null; n = n->next) {
if (n->name == "option" && n->children != null && n->children->name == "text") {
int number = n->get_prop ("value").to_int ();
// Skip 0 "Alle St.dte"
if (number == 0)
continue;
var city = new City(number,
n->children->content);
city_list.append ((owned) city);
}
}
// TODO: get coordinates
save_city_list ();
return city_list;
}
private int get_city_number (string name) {
foreach (unowned City city in city_list) {
if (city.name == name)
return city.number;
}
return 0;
}
public unowned City find_nearest_city (double latitude, double longitude) {
unowned City result = null;
double min_distance = 0.0;
bool in_result = false;
foreach (unowned City city in city_list) {
double lat = latitude - city.latitude;
double lng = longitude - city.longitude;
double distance = lat * lat + lng * lng;
bool in_city = ((city.south <= latitude <= city.north) &&
(city.west <= longitude <= city.east));
if ((result == null) ||
(in_city && !in_result) ||
(in_city && in_result && distance / city.bb_area () < min_distance / result.bb_area ()) ||
(!in_city && !in_result && distance < min_distance)) {
result = city;
min_distance = distance;
in_result = in_city;
}
}
return result;
}
public List? get_lift_list (string city_from, string city_to, Date date, int tolerance = 0) {
if (city_list == null)
get_city_list ();
int num_from = get_city_number (city_from);
if (num_from == 0) {
stderr.printf ("Unknown city: %s\n", city_to);
return null;
}
int num_to = get_city_number (city_to);
if (num_to == 0) {
stderr.printf ("Unknown city: %s\n", city_to);
return null;
}
string url = BASE_URI + "/mitfahrclub/%s/%s/b.html".printf (
city_from,
city_to
);
url += "?type=b&city_from=%d&radius_from=0&city_to=%d&radius_to=0".printf (
num_from,
num_to
);
url += "&date=date&day=%d&month=%d&year=%d&tolerance=%d&smoking=&avg_speed=&".printf (
date.get_day (),
date.get_month (),
date.get_year (),
tolerance
);
var doc = get_html_document (url);
if (doc == null) {
print ("Error: parsing failed");
print ("%s\n", this.response);
return null;
}
var table = search_tag_by_class (doc->children, "table", "list p_15");
if (table == null) {
print ("Error: does not contain list p_15 table");
print ("%s\n", this.response);
return null;
}
var list = new List ();
for (var n = table->children; n != null; n = n->next) {
if (n->name == "tr") {
var lift = parse_lift_row (n->children);
if (lift.city_from != null) // Skip the title row
list.append ((owned) lift);
}
}
// Error message?
var div = table->next;
if (div != null && div->get_prop ("class") == "error-message") {
if (div->children == null || div->children->content == null ||
!div->children->content.has_prefix ("Es sind leider noch keine Einträge vorhanden.")) {
stderr.printf ("Got an unknown error message!\n");
if (div->children != null && div->children->content != null)
stderr.printf ("\"%s\"\n", div->children->content);
}
}
return list;
}
Lift parse_lift_row (Xml.Node* node) {
var lift = new Lift ();
int i = 0;
for (var n = node; n != null; n = n->next) {
if (n->name == "td") {
var n2 = n->children;
if (n2 != null) {
if (n2->name == "a") {
var href = n2->get_prop ("href");
if (href != null && lift.href == null)
lift.href = href;
var n3 = n2->children;
while (n3 != null) {
if (n3->name == "text")
switch (i) {
case 0:
lift.city_from = n3->content;
break;
case 1:
lift.city_to = n3->content;
break;
case 2:
lift.date = n3->content;
break;
case 3:
lift.time = n3->content;
break;
case 4:
lift.places = n3->content.to_int ();
break;
case 5:
lift.price = n3->content;
break;
default:
print ("TEXT:%s\n", n3->content);
break;
}
if (n3->name == "span") {
string class = n3->get_prop ("class");
if (class == "icon_smoker")
lift.flags |= LiftFlags.SMOKER;
else if (class == "icon_non_smoker")
lift.flags |= LiftFlags.NON_SMOKER;
else if (class == "icon_adac")
lift.flags |= LiftFlags.ADAC_MEMBER;
else if (class == "icon_women")
lift.flags |= LiftFlags.WOMEN_ONLY;
else if (class != null)
print ("SPAN %s\n", class);
}
n3 = n3->next;
}
}
}
i++;
}
}
return lift;
}
public Lift? get_lift_details (string lift_url) {
var lift = new Lift ();
lift.href = lift_url;
if (update_lift_details (lift))
return lift;
else
return null;
}
public bool update_lift_details (Lift lift) {
string url = BASE_URI + lift.href;
var doc = get_html_document (url);
if (doc == null) {
print ("Error: parsing failed");
print ("%s\n", this.response);
return false;
}
var table = search_tag_by_class (doc->children, "table", "lift");
if (table == null) {
print ("Error: does not contain lift table");
print ("%s\n", this.response);
return false;
}
for (var n = table->children; n != null; n = n->next) {
if (n->name == "tr") {
var n2 = n->children;
if (n2 == null || n2->name != "td" ||
n2->children == null || n2->children->name != "text")
continue;
string text = n2->children->content;
if (text != "Strecke & Infos" && text != " " && !text.has_prefix ("\xc2\xa0") &&
text != "Datum" &&
text != "Freie Pl\xc3\xa4tze" &&
text != "Name" &&
text != "Handy" &&
text != "Telefon" &&
text != "Telefon 2" &&
text != "E-Mail 1" &&
text != "Details" &&
text != "Beschreibung")
continue;
n2 = n2->next;
if (n2 == null)
continue;
// Skip text between td nodes
if (n2->name == "text")
n2 = n2->next;
if (n2 == null || n2->name != "td" || n2->children == null)
continue;
if (n2->children->name == "img") {
// FIXME: email image
// n2->children->get_prop ("src"))
continue;
}
if (n2->children->name == "div" && text == "Beschreibung") {
var n3 = n2->children->children;
lift.description = "";
while (n3 != null) {
if (n3->name == "text")
lift.description += n3->content.strip () + "\n";
n3 = n3->next;
}
continue;
} else if (n2->children->name != "text") {
continue;
}
var text1 = n2->children->content.strip ();
if (text == "Datum")
lift.date = text1;
else if (text == "Freie Pl\xc3\xa4tze")
lift.places = text1.to_int ();
else if (text == "Name")
lift.name = text1;
else if (text == "Handy")
lift.cell = text1;
else if (text == "Telefon")
lift.phone = text1;
else if (text == "Telefon 2")
lift.phone2 = text1;
else if (text == "E-Mail 1")
lift.email = text1;
else if (text != "Strecke & Infos" && text != " " &&
!text.has_prefix ("\xc2\xa0") && text != "Datum" &&
text != "Details")
continue;
n2 = n2->next;
if (n2 == null)
continue;
// Skip text between td nodes
if (n2->name == "text")
n2 = n2->next;
if (n2 == null || n2->name != "td" ||
n2->children == null)
continue;
if (n2->children->name == "span" &&
n2->children->get_prop ("class") == "icon_non_smoker") {
lift.flags |= LiftFlags.NON_SMOKER;
continue;
} else if (n2->children->name == "span" &&
n2->children->get_prop ("class") == "icon_smoker") {
lift.flags |= LiftFlags.SMOKER;
continue;
} else if (n2->children->name != "text")
continue;
var text2 = n2->children->content.strip ();
if (text1 == "von")
lift.city_from = text2;
else if (text1.has_prefix ("\xc3\xbc"))
lift.city_via.append (text2);
else if (text1 == "nach")
lift.city_to = text2;
else if (text1 == "Datum")
lift.date = text2;
else if (text1 == "Uhrzeit")
lift.time = text2;
else if (text1 == "Raucher")
print ("Raucher: %s\n", text2);
else if (text1 == "Fahrpreis")
lift.price = text2;
else if (text1 == "ADAC-Mitglied" && text2 != "nein")
lift.flags |= LiftFlags.ADAC_MEMBER;
}
}
// The paragraph after the table contains the date of last modification
var p = table->next;
for (var n = p->children; n != null; n = n->next) {
if (n->name != "text")
continue;
var s = n->content.strip ();
if (s.has_prefix ("Letztmalig aktualisiert am "))
lift.modified = s.offset (27).dup (); // "Do 15.04.2010 20:32"
}
return true;
}
Xml.Node* search_tag_by_property (Xml.Node* node, string tag, string prop, string val) requires (node != null) {
for (var n = node; n != null; n = n->next) {
if (n->name == tag && n->get_prop (prop) == val)
return n;
if (n->children != null) {
var found = search_tag_by_property (n->children, tag, prop, val);
if (found != null)
return found;
}
}
return null;
}
Xml.Node* search_tag_by_id (Xml.Node* node, string tag, string id) requires (node != null) {
return search_tag_by_property (node, tag, "id", id);
}
Xml.Node* search_tag_by_name (Xml.Node* node, string tag, string name) requires (node != null) {
return search_tag_by_property (node, tag, "name", name);
}
Xml.Node* search_tag_by_class (Xml.Node* node, string tag, string @class) requires (node != null) {
return search_tag_by_property (node, tag, "class", @class);
}
}