Spray service, for Scala meetup competition Feb-2012

CompetitionService.scala

package com.example

import cc.spray._

trait HelloService extends Directives {

  def prime (x: Int): Boolean = {
    if ((x < 2) || (x % 2 == 0)) false 
    ((3 to math.sqrt(x).toInt by 2).find (n => (x % n == 0)) == None)
  }

  def cubeNsquare (x: Int) = {
    // incomplete:
    math.sqrt (x) * math.sqrt (x) == x 
  }

  def keywordSearch (words: List[String]): String = {
     if (words.contains ("Spain"))
       "Pesetas"
     else if (words.contains ("banana"))
       "yellow"
     else if (words.contains ("Minister")) 
       "Cameron"
     else if (words.contains ("Foo"))
       "Bar"
     else "Paris"
  }

  def mapWordsNnumbers (words: List[String], nums: List[Int]): String = {
    if (words.contains ("largest:")) 
      "" + nums.max 
    else if (words.contains ("cube:")) 
      "" + nums.find (cubeNsquare).getOrElse (nums(0)) 
    else if (words.contains ("primes:")) 
      "" + nums.find (prime).getOrElse (42) 
    else if (words.contains ("multiplied")) 
      "" + nums.product
    else if (words.contains ("plus")) 
      "" + nums.sum
    else "44"
  }

  def analyze (s: String) : String = {
    println ("\t\ts:\t" + s) 
    val postColon = s.replace ("[^:]*:", "") 
    val words = postColon.split ("[, ]") 
    println ("\t\tpostColon:\t" + postColon) 
    println ("\t\twords:\t" + words.mkString (" - "))
    // val numbers = words.filter (_.matches ("[0-9]\\+"))
    val numbers = words.filter (_.matches ("[0-9][0-9]*"))
    println ("\t\tnums:\t" + numbers.mkString (" # "))
    val res = if (numbers.isEmpty) keywordSearch (words.toList)
    else mapWordsNnumbers (words.toList, numbers.map (_.toInt).toList)
    println (res + "\n")
    res
  }

  // later added for testing without server app:
  // val requests = io.Source.fromFile ("requests.txt").getLines
  // val results = requests.toList.map (analyze)   

  val helloService = {
    (path ("") & parameter ("q")) {
    q => { 
       get {
       println("-----> " + q)
       val result = analyze (q)  
       println("=====> " + result)
       println ()
       _.complete (result) 
       }
      }
    }
  }
}
/* later added for testing without testframework app:
object Driver extends App {
  val requests = io.Source.fromFile ("requests.txt").getLines
  val results = requests.toList.map (analyze) 
*/ 
}

requests.txt

 c8b859a0: which of the following numbers is both a square and a cube: 81, 502, 1936, 579
 d4acac10: what is 19 multiplied by 10
 e09e9580: what is 18 multiplied by 9
 ec8f46b0: what is 16 multiplied by 17
 f8812810: which of the following numbers is both a square and a cube: 46656, 960
 04848200: which of the following numbers is the largest: 84, 285
 10770d60: which of the following numbers is both a square and a cube: 606, 744, 1089, 961
 1c759270: what is 11 multiplied by 6
 28679220: which of the following numbers is both a square and a cube: 630, 784
 34579620: which of the following numbers is both a square and a cube: 819, 25, 900, 722
 404a9d80: which of the following numbers is the largest: 964, 1, 406, 20
 4c395510: which of the following numbers is the largest: 373, 68
 5828ee70: which of the following numbers is the largest: 58, 5
 641830c0: which of the following numbers is both a square and a cube: 64, 866
 70093070: what is 10 multiplied by 4
 7bfe3810: which of the following numbers is both a square and a cube: 576, 459, 117649, 618
 87ef4920: what is 14 multiplied by 5
 35ce66f0: which of the following numbers is the largest: 464, 37, 213, 17
 42a55120: which of the following numbers is the largest: 82, 78
 4e973110: what is 9 multiplied by 7
 5a899a20: what is 0 plus 6
 66808c90: which of the following numbers is the largest: 663, 9, 77, 10
 7286aa40: which of the following numbers is both a square and a cube: 625, 948, 441, 758
 7e7b4c40: which of the following numbers is the largest: 998, 901, 86, 97
 8a925000: which of the following numbers are primes: 61, 929
 969cfd20: who is the Prime Minister of Great Britain
 a3b725a0: which of the following numbers is both a square and a cube: 46656, 946
 afae18b0: what is 13 multiplied by 2
 bba370c0: which of the following numbers is the largest: 8, 696
 c7960fb0: which of the following numbers is the largest: 12, 96, 47, 248
 d38c4850: what currency did Spain use before the Euro
 df8583c0: which of the following numbers is the largest: 363, 710, 3, 12
 eb7adbe0: which of the following numbers are primes: 163, 383, 676, 750
 f76e06f0: which of the following numbers are primes: 450, 769, 5, 263
 035ffc70: which of the following numbers are primes: 23, 607, 991, 167
 0f539cc0: who is the Prime Minister of Great Britain
 1b43f010: what is 10 multiplied by 6
 273b3940: which of the following numbers are primes: 868, 337
 33303830: which of the following numbers is the largest: 59, 219, 951, 3
 3f262370: who is the Prime Minister of Great Britain
 container:start-----> 4b16d2e0: what colour is a banana
 62f9ffe0: who is the Prime Minister of Great Britain
 6f2d2f00: which of the following numbers is both a square and a cube: 36, 641
 7b5506d0: who is the Prime Minister of Great Britain
 874a0c30: which of the following numbers is the largest: 61, 931
 934bd5d0: what is 7 multiplied by 6
 9f3a42a0: which of the following numbers is the largest: 696, 10
 ab334a10: who is the Prime Minister of Great Britain
 b7270550: what colour is a banana
 c4e3ecc0: which of the following numbers are primes: 419, 372
 d0d41e60: what colour is a banana
 0c9ff390: which of the following numbers is both a square and a cube: 2304, 539
 1908d280: what currency did Spain use before the Euro
 250350d0: which of the following numbers is both a square and a cube: 213, 81
 310822c0: which of the following numbers is the largest: 73, 863
 3cfc87f0: which of the following numbers is both a square and a cube: 1296, 643
 49058670: which of the following numbers is both a square and a cube: 72, 729
 5502b1f0: which of the following numbers is both a square and a cube: 646, 169, 841, 44
 60f5e630: which of the following numbers are primes: 487, 359, 462, 907
 6ce79470: which of the following numbers is the largest: 800, 690, 80, 16
 78dfae40: which of the following numbers is both a square and a cube: 32, 16
 84d47f90: which of the following numbers is both a square and a cube: 625, 559
 929f3f80: which of the following numbers is both a square and a cube: 1, 685
 9e9b1f10: which of the following numbers are primes: 151, 183
 ac6c6c80: what colour is a banana
 b85dcd00: which of the following numbers are primes: 127, 638
 c44e7be0: what is 10 multiplied by 10
 d0409950: what is 6 multiplied by 9
 dc33ec60: what is 16 multiplied by 7
 e82567d0: who is the Prime Minister of Great Britain
 f41e1cd0: what colour is a banana
 00175470: which of the following numbers are primes: 229, 650
ibmux:~/proj/mini/scala/zeuchs/competition/spray-template > umts
[sudo] password for stefan: 

Looking for target devices ...
 No devices in target mode or class found
Looking for default devices ...
 No default device found. Is it connected? Bye.

ibmux:~/proj/mini/scala/zeuchs/competition/spray-template > umts

Looking for target devices ...
 No devices in target mode or class found
Looking for default devices ...
 No default device found. Is it connected? Bye.

ibmux:~/proj/mini/scala/zeuchs/competition/spray-template > cat requests.txt 
 c8b859a0: which of the following numbers is both a square and a cube: 81, 502, 1936, 579
 d4acac10: what is 19 multiplied by 10
 e09e9580: what is 18 multiplied by 9
 ec8f46b0: what is 16 multiplied by 17
 f8812810: which of the following numbers is both a square and a cube: 46656, 960
 04848200: which of the following numbers is the largest: 84, 285
 10770d60: which of the following numbers is both a square and a cube: 606, 744, 1089, 961
 1c759270: what is 11 multiplied by 6
 28679220: which of the following numbers is both a square and a cube: 630, 784
 34579620: which of the following numbers is both a square and a cube: 819, 25, 900, 722
 404a9d80: which of the following numbers is the largest: 964, 1, 406, 20
 4c395510: which of the following numbers is the largest: 373, 68
 5828ee70: which of the following numbers is the largest: 58, 5
 641830c0: which of the following numbers is both a square and a cube: 64, 866
 70093070: what is 10 multiplied by 4
 7bfe3810: which of the following numbers is both a square and a cube: 576, 459, 117649, 618
 87ef4920: what is 14 multiplied by 5
 35ce66f0: which of the following numbers is the largest: 464, 37, 213, 17
 42a55120: which of the following numbers is the largest: 82, 78
 4e973110: what is 9 multiplied by 7
 5a899a20: what is 0 plus 6
 66808c90: which of the following numbers is the largest: 663, 9, 77, 10
 7286aa40: which of the following numbers is both a square and a cube: 625, 948, 441, 758
 7e7b4c40: which of the following numbers is the largest: 998, 901, 86, 97
 8a925000: which of the following numbers are primes: 61, 929
 969cfd20: who is the Prime Minister of Great Britain
 a3b725a0: which of the following numbers is both a square and a cube: 46656, 946
 afae18b0: what is 13 multiplied by 2
 bba370c0: which of the following numbers is the largest: 8, 696
 c7960fb0: which of the following numbers is the largest: 12, 96, 47, 248
 d38c4850: what currency did Spain use before the Euro
 df8583c0: which of the following numbers is the largest: 363, 710, 3, 12
 eb7adbe0: which of the following numbers are primes: 163, 383, 676, 750
 f76e06f0: which of the following numbers are primes: 450, 769, 5, 263
 035ffc70: which of the following numbers are primes: 23, 607, 991, 167
 0f539cc0: who is the Prime Minister of Great Britain
 1b43f010: what is 10 multiplied by 6
 273b3940: which of the following numbers are primes: 868, 337
 33303830: which of the following numbers is the largest: 59, 219, 951, 3
 3f262370: who is the Prime Minister of Great Britain
 4b16d2e0: what colour is a banana
 62f9ffe0: who is the Prime Minister of Great Britain
 6f2d2f00: which of the following numbers is both a square and a cube: 36, 641
 7b5506d0: who is the Prime Minister of Great Britain
 874a0c30: which of the following numbers is the largest: 61, 931
 934bd5d0: what is 7 multiplied by 6
 9f3a42a0: which of the following numbers is the largest: 696, 10
 ab334a10: who is the Prime Minister of Great Britain
 b7270550: what colour is a banana
 c4e3ecc0: which of the following numbers are primes: 419, 372
 d0d41e60: what colour is a banana
 0c9ff390: which of the following numbers is both a square and a cube: 2304, 539
 1908d280: what currency did Spain use before the Euro
 250350d0: which of the following numbers is both a square and a cube: 213, 81
 310822c0: which of the following numbers is the largest: 73, 863
 3cfc87f0: which of the following numbers is both a square and a cube: 1296, 643
 49058670: which of the following numbers is both a square and a cube: 72, 729
 5502b1f0: which of the following numbers is both a square and a cube: 646, 169, 841, 44
 60f5e630: which of the following numbers are primes: 487, 359, 462, 907
 6ce79470: which of the following numbers is the largest: 800, 690, 80, 16
 78dfae40: which of the following numbers is both a square and a cube: 32, 16
 84d47f90: which of the following numbers is both a square and a cube: 625, 559
 929f3f80: which of the following numbers is both a square and a cube: 1, 685
 9e9b1f10: which of the following numbers are primes: 151, 183
 ac6c6c80: what colour is a banana
 b85dcd00: which of the following numbers are primes: 127, 638
 c44e7be0: what is 10 multiplied by 10
 d0409950: what is 6 multiplied by 9
 dc33ec60: what is 16 multiplied by 7
 e82567d0: who is the Prime Minister of Great Britain
 f41e1cd0: what colour is a banana
 00175470: which of the following numbers are primes: 229, 650