neue variante hinzugefügt

DVB-Scraping.mw

@@ -131,6 +131,119 @@ end
 Und dann:
  telnet localhost 65023
 
+=NCurses Monitor=
+Der VVO stellt jetzt ja für seine Widgets eine JSON(?)-Variante der Daten zur Verfügung.
+
+<source lang="ruby">
+
+require 'net/http'
+require 'ncurses'
+
+class DvbAbfahrt
+  def initialize
+    @BASEURI = "http://widgets.vvo-online.de/abfahrtsmonitor/Abfahrten.do?ort=ORT&hst=HST&vz=VZ"
+        
+  end
+  
+  def fetch(ort, hst, vz=0)
+		# TODO exceptionhandling: timeout
+    vz = vz.to_s
+		ort = URI.escape ort
+		hst = URI.escape hst
+    uri = @BASEURI.gsub(/ORT/, ort).gsub(/HST/,hst).gsub(/VZ/, vz)
+    res = Net::HTTP.get(URI.parse(uri))
+    res = umlauts_hack res 
+   	arr = res.scan(/(\d+),([^,]{1,}),(\d+)/) 
+  end
+
+	def umlauts_hack(s)
+		repl = [
+			["&quot;", ''],
+			["&#252;", "ü"],
+			["&#246;", "ö"],
+			["&#223;", "ß"]
+		]
+		repl.each do |r|
+			s.gsub!(r[0], r[1])
+		end
+		return s
+	end
+  
+end
+
+class Monitor
+	
+	def initialize(ort, hst, vz=0) 
+		Ncurses::initscr
+		Ncurses::start_color
+		Ncurses::init_pair(1, Ncurses::COLOR_YELLOW, Ncurses::COLOR_BLACK);
+		Ncurses::attron(Ncurses::COLOR_PAIR(1));
+		Ncurses::curs_set(0)
+		Ncurses::move(0,0)
+		Ncurses::printw "Loading..."
+		Ncurses::refresh
+		
+		@sep = "|"
+		@timeout = 30	
+		
+		@wlno = 3
+		@wlname = 20 
+		@weta = 3
+		
+		@ort = ort
+		@hst = hst
+		@vz = vz
+		@dvb = DvbAbfahrt.new
+		@lines = 0
+	end
+
+	def print_title
+		Ncurses::attron(Ncurses::A_REVERSE | Ncurses::A_BOLD);
+		Ncurses::mvprintw(0,0, @hst.center(@wlno+@wlname+@weta+2)) # +2 seperators
+		Ncurses::attroff(Ncurses::A_REVERSE | Ncurses::A_BOLD);
+	end
+
+	def mainloop
+		print_title
+		while true
+			info = @dvb.fetch(@ort, @hst, @vz)
+			
+		# clearing old lines if needed
+			
+			if @lines > info.size
+				Ncurses::clear
+				print_title
+			end
+
+			@lines = info.size
+
+			info.each_index do |i|
+				
+				Ncurses::mvprintw(i+1, 0, info[i][0].rjust(@wlno) + @sep + info[i][1][0..@wlname].center(@wlname) + @sep + info[i][2].rjust(@weta))
+			end
+			Ncurses::refresh
+			Ncurses::move(0,0)
+			sleep @timeout
+		end
+	end
+end
+
+
+
+if __FILE__ == $0
+	begin
+		if !ARGV.empty?
+			m = Monitor.new("Dresden", ARGV[0])
+			m.mainloop
+		else
+			puts "USAGE #{$0} <HALTESTELLENNAME>"
+		end
+	ensure
+		Ncurses::attroff(Ncurses::COLOR_PAIR(1));
+		Ncurses::endwin
+	end
+end
+</source>
 
 [[Kategorie:Ruby]]