DouKaku?

import scala.util.parsing.combinator.{Parsers, ImplicitConversions, ~, mkTilde}
import scala.util.parsing.input.CharArrayReader
import Character.isISOControl

object CSVParser {
 trait Base
 case class Field(s:String) extends Base {
   override def toString = s
 }
 case class Record(fields: List[Field]) extends Base
 case class File(records :List[Record]) extends Base

 def mkString(cs :List[Any]) = cs.mkString("")
 class CSVParser extends Parsers {
   type Elem = Char
   def notMeta(c:Elem) = c!=',' && c!='\n' && c!='"' && !isISOControl(c)

   lazy val file   = record.*('\n') ^^ File
   lazy val record = (field|quotedField|nullableField).*(',') ^^ Record
   lazy val field = chars.+ ^^ {cs => Field(mkString(cs))}
   lazy val nullableField = chars.* ^^ {cs => Field("")}
   lazy val quotedField = '"' ~ (charsInQuote|quoteInQuote).* ~ '"' ^^ {cs => Field(mkString(cs))}
   lazy val charsInQuote = elem("chars in field", _!='"')
   lazy val quoteInQuote = repN(2, quote) ^^ {cs => '"'}
   lazy val quote  = '"' ^^ success
   lazy val chars  = elem("chars", notMeta)
 }
}

val data = """
"aaa","b
bb","ccc",zzz,"y""Y""y",xxx
""".trim

(new CSVParser.CSVParser).file(new
CharArrayReader(data.toCharArray)).map(file => {
 file.records.map({record =>
   val fields = record.fields
   (1 to fields.length).foreach(i => println(i +" => " + fields(i-1)))
 })
})