gistfile1.scala

object VisitBrightonScraper extends VisitBrightonScraper   

class VisitBrightonScraper extends TideSource {
  def page = Source.fromURL( "http://www.visitbrighton.com/site/tourist-information/tide-timetables").mkString   
  
  override def lowsFor(day:LocalDate) = {
    // We want the times that start with the date in this  
    // format: 10th May 2009  
    val date = day.ordinal + DateTimeFormat.forPattern(" MMM yyyy").print(day)

   val Pattern = 
     """|(?sm).*<div class="TidalDataEntry"><h3>DATE</h3><table class="TidalData"><tr>
        |<th>&nbsp;</th><th class="Time">Time</th><th class="Height">Height .m.</th></tr><tr>
        |<td class="Tide">High</td><td class="Time">(.+?)</td><td class="Height">(.+?)</td></tr><tr>
        |<td class="Tide">Low</td><td class="Time">(.+?)</td><td class="Height">(.+?)</td></tr>
        |</table></div>.*""".stripMargin.replaceAll("\n","").replaceFirst("DATE", date).r

   try {  
    val Pattern(high_times,high_heights,low_times,low_heights) = page   
    
    // The times and heights are in separate columns;  multiple values separated by "<br/>"
    val tides = for ( (time_string,height) <- low_times.split("<br/>") zip low_heights.split("<br/>") )  
      yield Tide( time_string.toLocalTime, Metre(height.toDouble) )   
    
    tides.toList  
   } catch {  
    case x:scala.MatchError => println(x)  Nil   
   }
}