Imagine you have String that contains the Ampersand Symbol & my goal is to add spaces between the & and any character if there isn't any
e.x
Case 1: Body&Soul should be-->Body & Soul (working)
Case 2: Body &Soul--> Body & Soul (working)
Case 3: Body& Soul -->Body & Soul (working)
Case 4: Body&Soul&Mind -->Body & Soul & Mind (working)
Case 5: Body &Soul& Mind ---> Body & Soul & Mind (not working)
Case 6: Body& Soul &Mind ---> Body & Soul & Mind (not working)
def replaceEmployerNameContainingAmpersand(emplName: String): String
= {
val r = "(?<! )&(?! )".r.unanchored
val r2 = "&(?! )".r.unanchored
val r3 = "(?<! )&".r.unanchored
emplName match {
case r() => emplName.replaceAll("(?<! )&(?! )", " & ")
case r2() => emplName.replaceAll("&(?! )", "& ")
case r3() => emplName.replaceAll("(?<! )&", " &")
}
}
The goal is to fix Case 5 & 6: Body &Soul& Mind or Body& Soul &Mind --> Body & Soul & Mind
But it's not working because when case 2 or 3 occurs the case is exiting and not matching the second & symbol.
Can anyone help me on how to match case 5 and 6?
You may capture a single optional whitespace char on both ends of a & and check if they matched, and replace accordingly using replaceAllIn:
def replaceAllIn(target: CharSequence, replacer: (Match) => String): String
Replaces all matches using a replacer function.
See the Scala demo:
val s = "Body&Soul, Body &Soul, Body& Soul, Body&Soul&Mind, Body &Soul& Mind, Body& Soul &Mind"
val pattern = """(\s)?&(\s)?""".r
val res = pattern.replaceAllIn(s, m => (if (m.group(1) != null) m.group(1) else " ") + "&" + (if (m.group(2) != null) m.group(2) else " ") )
println(res)
// => Body & Soul, Body & Soul, Body & Soul, Body & Soul & Mind, Body & Soul & Mind, Body & Soul & Mind
The (\s)?&(\s)? pattern matches and captures into Group 1 a single whitespace char, then matches &, and then captures an optional whitespace in Group 2.
If Group 1 is not null, there is a whitespace, and we keep it, else, replace with a space. The same logic is used for the trailing space.