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(define-module (text numbers sv)
:use-module ((srfi srfi-1) :select (every))
:use-module (srfi srfi-71)
:use-module (hnh util)
:export (number->string-cardinal
number->string-ordinal
each-string))
;; only used in number->string-cardinal
(define (large-prefix e)
(cond
[(<= 6 e 11) "m"]
[(<= 12 e 17) "b"]
[(<= 18 e 23) "tr"]
[(<= 24 e 29) "kvadr"]
[(<= 30 e 35) "kvint"]
[(<= 36 e 41) "sext"]
[(<= 42 e 47) "sept"]
[(<= 48 e 53) "okt"]
[(<= 54 e 59) "non"]
[(<= 60 e 65) "dec"]
))
(define (number->string-cardinal n . _)
(cond [(< n 0) (string-append "minus " (number->string-cardinal (- n)))]
[(= n 0) "noll"]
[(= n 1) "ett"]
[(= n 2) "två"]
[(= n 3) "tre"]
[(= n 4) "fyra"]
[(= n 5) "fem"]
[(= n 6) "sex"]
[(= n 7) "sju"]
[(= n 8) "åtta"]
[(= n 9) "nio"]
[(= n 10) "tio"]
[(= n 11) "elva"]
[(= n 12) "tolv"]
[(= n 13) "tretton"]
[(= n 14) "fjorton"]
[(= n 15) "femton"]
[(= n 16) "sexton"]
[(= n 17) "sjutton"]
[(= n 18) "arton"]
[(= n 19) "nitton"]
[(= n 20) "tjugo"]
[(<= 21 n 29) (string-append "tjugo" (number->string-cardinal
(- n 20)))]
[(= n 30) "trettio"]
[(<= 31 n 39) (string-append "trettio" (number->string-cardinal
(- n 30)))]
[(= n 40) "fyrtio"]
[(<= 31 n 49) (string-append "fyrtio" (number->string-cardinal
(- n 40)))]
[(<= 50 n 69) (let ((big small (floor/ n 10)))
(string-append
(number->string-cardinal big)
"tio"
(if (zero? small)
"" (number->string-cardinal small))))]
[(= n 70) "sjuttio"]
[(<= 71 n 79) (string-append "sjuttio" (number->string-cardinal (- n 70)))]
[(= n 80) "åttio"]
[(<= 81 n 89) (string-append "åttio" (number->string-cardinal (- n 80)))]
[(= n 90) "nittio"]
[(<= 91 n 99) (string-append "nittio" (number->string-cardinal (- n 90)))]
[(= n 100) "etthundra"]
[(< 100 n 200) (string-append "etthundra" (number->string-cardinal (- n 100)))]
[(= n 200) "tvåhundra"]
[(< 200 n 1000) (let ((big small (floor/ n 100)))
(string-append
(number->string-cardinal big)
"hundra"
(if (zero? small)
"" (number->string-cardinal small))))]
[(<= 1000 n 999999)
(let ((big small (floor/ n 1000)))
(let ((big* (number->string-cardinal big)))
(string-append
(if (= 1 big) "et" big*)
(if (<= 18 (string-length big*)) " " "")
"tusen"
(if (zero? small)
""
(string-append
" " (number->string-cardinal small))))))]
[(<= #e1e6 n (1- #e1e66))
(let ((e (inexact->exact (floor (log10 n))))
(big small (floor/ n #e1e6)))
(if (zero? big)
(number->string-cardinal (modulo small 1000))
(string-append
(if (or (= 1 big)
(= 0 (modulo big 1000)))
"en"
(number->string-cardinal
(floor-quotient
big (if (even? (floor-quotient e 3))
1 1000))))
" "
(large-prefix e)
(if (even? (floor-quotient e 3))
"iljon" "iljard")
(if (or (= 1 big)
(= 0 (modulo big 1000)))
"" "er")
(if (zero? small)
""
(string-append
" "
(number->string-cardinal small))))))]
[else
;; I give up, don't have larger numbers that that!
(string-append "det stora talet "
(number->string n))]))
(define* (number->string-ordinal
n key: a-form? allow-other-keys:)
(define a-string (if a-form? "a" "e"))
(cond [(>= -3 n) (string-append (number->string-ordinal (- n)) " sista" )]
[(= -2 n) "näst sista"]
[(= -1 n) "sista"]
[(= 0 n) "nollte"] ;
[(= 1 n) (string-append "först" a-string)]
[(= 2 n) (string-append "andr" a-string)]
[(= 3 n) "tredje"]
[(= 4 n) "fjärde"]
[(= 5 n) "femte"]
[(= 6 n) "sjätte"]
[(= 7 n) "sjunde"]
[(= 8 n) "åttonde"]
[(= 9 n) "nionde"]
[(= 10 n) "tionde"]
[(= 11 n) "elfte"]
[(= 12 n) "tolfte"]
[(= 13 n) "trettonde"]
[(= 14 n) "fjortonde"]
[(= 15 n) "femtonde"]
[(= 16 n) "sextonde"]
[(= 17 n) "sjuttonde"]
[(= 18 n) "artonde"]
[(= 19 n) "nittonde"]
[(= 20 n) "tjugonde"]
[(<= 20 n 29) (string-append "tjugo"
(number->string-ordinal
(- n 20)
a-form?: a-form?))]
[(<= 30 n 99)
(let ((big small (floor/ n 10)))
(string-append
(case big
[(3) "tret"]
[(4) "fyr"]
[(8) "åt"]
[(7) "sjut"]
[(9) "nit"]
[else (number->string-cardinal big)])
"tio"
(if (zero? (modulo small 10))
"nde"
(number->string-ordinal
small a-form?: a-form?))))]
[(= n 100) "etthundrade"]
[(= n 1000) "etttusende"]
[(= n #e1e6) "miljonte"]
[(= n #e1e9) "miljarde"]
[(= n #e1e12) "biljonte"]
[else
(let ((big small (floor/ n 100)))
(string-append (number->string-cardinal (* big 100))
(if (zero? small)
"de"
(number->string-ordinal
small a-form?: a-form?))))]))
;; (each-string 1) ; => "varje"
;; (each-string 2) ; => "varannan"
;; (each-string 3) ; => "var tredje"
;; (each-string 3 #t) ; => "vart tredje"
(define* (each-string count key: neutrum allow-other-keys:)
(string-flatten
(cons
"var"
(case count
[(1) '("je")]
[(2)
;; varannan månad
;; vartannat år
(list (when neutrum "t")
"anna"
(if neutrum "t" "n"))]
[else (list (when neutrum "t") " "
(number->string-ordinal count))]))))
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