com.github.vickumar1981.stringdistance.impl.sound.MetaphoneImpl.scala Maven / Gradle / Ivy

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A fuzzy matching string distance library for Scala and Java.

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package com.github.vickumar1981.stringdistance.impl.sound

import com.github.vickumar1981.stringdistance.interfaces.sound.MetaphoneAlgo
import com.github.vickumar1981.stringdistance.interfaces.sound.CommonSoundAlgo._

private[stringdistance] trait MetaphoneImpl {
  private def compare(a: String, b: String): Option[Boolean] =
    if (a.length == 0 || !isAlpha(a.head) || b.length == 0 || !isAlpha(b.head)) None
    else
      MetaphoneAlgo.compute(a).filter(_.length > 0).flatMap { mp1 =>
        MetaphoneAlgo.compute(b).filter(_.length > 0).map(mp1.sameElements(_))
      }

  protected def metaphone(s1: String, s2: String): Boolean =
    compare(s1, s2).getOrElse(false)
}