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


procedure main(A)
    ws := ' \t'
    vars := table()
    every line := !&input do {
        line ? {
            tab(many(ws))
            if any('#;') | pos(0) then next
            vars[map(tab(upto(ws)\1|0))] := getValue()
            }
        }
    show(vars)
end
 
procedure getValue()
    ws := ' \t'
    a := []
    while not pos(0) do {
        tab(many(ws))
        put(a, trim(tab(upto(',')|0)))
        move(1)
        }
    return a
end
 
procedure show(t)
    every pair := !sort(t) do {
        every (s := pair[1]||" = ") ||:= !pair[2] || ", "
        write(s[1:-2])
        }
end