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package org.scalatra.util

import java.nio.charset.Charset
import java.util.regex.Pattern

import rl.UrlCodingUtils

class RicherString(orig: String) {

  def isBlank: Boolean = {
    orig == null || orig.trim.isEmpty
  }

  @deprecated("Use nonBlank instead", "2.0")
  def isNonBlank: Boolean = !isBlank

  @deprecated("Use blankOption instead", "2.0")
  def toOption: Option[String] = blankOption
  def blankOption: Option[String] = if (isBlank) None else Some(orig)
  def nonBlank: Boolean = !isBlank

  def urlEncode: String = UrlCodingUtils.urlEncode(orig)
  def formEncode: String = UrlCodingUtils.urlEncode(orig, spaceIsPlus = true)
  def urlDecode: String = UrlCodingUtils.urlDecode(orig)
  def formDecode: String = UrlCodingUtils.urlDecode(orig, plusIsSpace = true)

  def urlEncode(charset: Charset): String = UrlCodingUtils.urlEncode(orig, charset)
  def formEncode(charset: Charset): String = UrlCodingUtils.urlEncode(orig, charset, spaceIsPlus = true)
  def urlDecode(charset: Charset): String = UrlCodingUtils.urlDecode(orig, charset)
  def formDecode(charset: Charset): String = UrlCodingUtils.urlDecode(orig, charset, plusIsSpace = true)

  def /(path: String): String = {
    (orig.endsWith("/"), path.startsWith("/")) match {
      case (true, false) | (false, true) ⇒ orig + path
      case (false, false) ⇒ orig + "/" + path
      case (true, true) ⇒ orig + path substring 1
    }
  }

  def regexEscape: String = Pattern.quote(orig)

  def toCheckboxBool: Boolean = {
    orig.toUpperCase match {
      case "ON" | "TRUE" | "OK" | "1" | "CHECKED" | "YES" | "ENABLE" | "ENABLED" => true
      case _ => false
    }
  }
}

object RicherString {

  implicit def stringToRicherString(s: String): RicherString = new RicherString(s)

}