How to define the regex for a string to separete key,value pair

Question

I am trying to divide a string into key:value pair in groovy but since my key has multiple values i am not able to acheieve the right result . It just prints the first value

I am trying below

def keyValueString = "key1:value1,value2,key2:value1,value2,value3,key3:value1"

def regex = /([^:,]+):((?:[^:,]+(?:,(?![:]))?)+)/

def matcher = keyValueString =~ regex


matcher.each { match ->
    def key = match[1]
    def value = match[2]

    println key 
    println value 

}

when i print the key and value i only don't get the right results. I want to separate each key,value pair like

key1:value1,value2
key2:value1,value2
key3:value1

is there another way to do this in groovy ?

Answer 1

You could maybe use this:

def keyValueString = "key1:value1,value2,key2:value1,value2,value3,key3:value1"

def regex = /((.+?):([^:]+)(?:,|$))/

def matcher = keyValueString =~ regex

matcher.each { match ->
    println "${match[2]} maps to ${match[3]}"
}

Which prints:

key1 maps to value1,value2
key2 maps to value1,value2,value3
key3 maps to value1