The task is to read a configuration file in standard configuration file format,
and set variables accordingly.

For this task, we have a configuration file as follows:

# This is a configuration file in standard configuration file format
#
# Lines beginning with a hash or a semicolon are ignored by the application
# program. Blank lines are also ignored by the application program.

# This is the fullname parameter
FULLNAME Foo Barber

# This is a favourite fruit
FAVOURITEFRUIT banana

# This is a boolean that should be set
NEEDSPEELING

# This boolean is commented out
; SEEDSREMOVED

# Configuration option names are not case sensitive, but configuration parameter
# data is case sensitive and may be preserved by the application program.

# An optional equals sign can be used to separate configuration parameter data
# from the option name. This is dropped by the parser. 

# A configuration option may take multiple parameters separated by commas.
# Leading and trailing whitespace around parameter names and parameter data fields
# are ignored by the application program.

OTHERFAMILY Rhu Barber, Harry Barber



For the task we need to set four variables according to the configuration entries as follows:

fullname = Foo Barber
favouritefruit = banana
needspeeling = true
seedsremoved = false


We also have an option that contains multiple parameters. These may be stored in an array.

 otherfamily(1) = Rhu Barber
 otherfamily(2) = Harry Barber


Related tasks
 Update a configuration file


def config = [:]
def loadConfig = { File file ->
    String regex = /^(;{0,1})\s*(\S+)\s*(.*)$/
    file.eachLine { line ->
        (line =~ regex).each { matcher, invert, key, value ->
            if (key == '' || key.startsWith("#")) return
            parts = value ? value.split(/\s*,\s*/) : (invert ? [false] : [true])
            if (parts.size() > 1) {
                parts.eachWithIndex{ part, int i -> config["$key(${i + 1})"] = part}
            } else {
                config[key] = parts[0]
            }
        }
    }
}