Day 6 - String minifier, remove whitespaces

While writing a webcrawler I stumbled over an annoying problem: The strings I did extract had CRLF, tabs and spaces in it which I did not want. So first I looked at the strings library. There are Replace and Trim functions, but none of them did exactly what I wanted: I did want to remove all unnecessary whitespaces, but not all of them, there should always be one single space between.

So after googling for more than one hour I decided to write it myself and I was astonished that it took me only 5 minutes and it compiled at the first try (Go is such a great language!):

package main 

import (

    "strings"

    "unicode"

)

func main() {

    s := "I am a string\n           Containing    tooo    many     spaces     and    \n new lines"

    println("Before: " + s)

    s = stringMinifier(s)

    println("After: " + s)

    println("----------\n" + strings.Replace(s, "am", "am not anymore", 1))

}

func stringMinifier(in string) (out string) {

    white := false

    for _, c := range in {

        if unicode.IsSpace(c) {

            if !white {

                out = out + " "

            }

            white = true

        } else {

            out = out + string(c)

            white = false

        }

    }

    return

}

Output:

Before: I am a string
           Containing    tooo    many     spaces     and    
 new lines
After: I am a string Containing tooo many spaces and new lines
----------
I am not anymore a string Containing tooo many spaces and new lines