[Cookbook] Trim String Indent

Ruby shared how you can trim the indent from Strings. Although Raw strings have this capability by default. It would be useful for normal strings too.

static indent(string) {
  var index = 0
  var bytes = string.bytes
  while(index < bytes.count) {
    var c = bytes[index]
    if(c == 0x20 || c == 0x09) {
      index = index + 1
      continue
    }
    return index
  }
  return 0
}

static indent_strip(string) {
  var start = indent(string)
  if(start == 0) return string
  var lines = string.split("\n")
  lines = lines.map {|line|
    var left = indent(line)
    if(left >= start) return line[start..-1]
    return line
  }
  return lines.join("\n")
}