%!PS

% begin included library code
% see https://github.com/Firedrake/postscript-libraries/
/test.start {
    print (:) print
    /test.pass 0 def
    /test.count 0 def
} bind def

/deepeq {
    2 dict begin
    /a exch def
    /b exch def
    a type b type eq {
        a type /dicttype eq {
            a length b length eq {
                <<
                    a {
                        pop
                        true
                    } forall
                    b {
                        pop
                        true
                    } forall
                >>
                true exch
                {
                    pop
                    dup a exch known {
                        dup b exch known {
                            dup a exch get exch b exch get deepeq not {
                                pop false
                            } if
                        } {
                            false
                        } ifelse
                    } {
                        false
                    } ifelse
                } forall
            } {
                false
            } ifelse
        } {
            a type dup /arraytype eq exch /stringtype eq or {
                a length b length eq {
                    true
                    0 1 a length 1 sub {
                        dup a exch get exch b exch get deepeq not {
                            pop false
                            exit
                        } if
                    } for
                } {
                    false
                } ifelse
            } {
                a b eq
            } ifelse
        } ifelse
    } {
        false
    } ifelse
    end
} bind def

/test.end {
    ( ) print
    test.count 0 gt {
        (Passed ) print
        test.pass (...) cvs print
        (/) print
        test.count (...) cvs print
        ( \() print
        test.pass 100 mul test.count idiv (...) cvs print
        (%\)) print
        (\r\n) print
    } if
} bind def

/test {
    /test.count test.count 1 add def
    {
        /test.pass test.pass 1 add def
    } {
        ( ) print
        test.count (....) cvs print
        (-fail) print
    } ifelse
} bind def

/a2s {
    2 dict begin
    /i exch def
    i length dup string /o exch def
    1 sub 0 exch 1 exch {
        dup i 3 -1 roll get o 3 1 roll put
    } for
    o
    end
} bind def


% end included library code

/recomposemask {
    7 dict begin
    /zero (0) 0 get def
    /nine (9) 0 get def
    /a (a) 0 get def
    /z (z) 0 get def
    /x (x) 0 get def
    [ exch
      {
          /ct 0 def
          [ exch
            {
                /c exch def
                c zero ge c nine le and
                c a ge c z le and or {
                    ct 4 lt {
                        /ct ct 1 add def
                        x
                    } {
                        c
                    } ifelse
                } {
                    c
                } ifelse
            } forall
          ] a2s
      } forall
    ]
    end
} bind def

(recomposemask) test.start

[(ab-cde-123) (123.abc.420) (3abc-0010.xy)] recomposemask
[(xx-xxe-123) (xxx.xbc.420) (xxxx-0010.xy)] deepeq test


[(1234567.a) (a-1234-bc) (a.b.c.d.e.f)] recomposemask
[(xxxx567.a) (x-xxx4-bc) (x.x.x.x.e.f)] deepeq test

test.end