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(define-module (text numbers sv)
:use-module ((srfi srfi-1) :select (every last))
:use-module (srfi srfi-71)
:use-module ((text util) :select (words))
:use-module (text big-numbers)
:use-module (hnh util)
:use-module (hnh util type)
:export (number->string-cardinal
number->string-ordinal
each-string))
(define maxnum (1- #e1e66))
(define (exp-name x)
(case x
((0) "")
((1) "tusen")
((2) " miljon")
((3) " miljard")
((4) " biljon")
((5) " biljard")
((6) " triljon")
((7) " triljard")
((8) " kvadriljon")
((9) " kvadriljard")
((10) " kvintiljon")
((11) " kvintiljard")
((12) " sextiljon")
((13) " sextiljard")
((14) " septiljon")
((15) " septiljard")
((16) " oktiljon")
((17) " oktiljard")
((18) " noniljon")
((19) " noniljard")
((20) " deciljon")
((21) " deciljard")))
(define* (number->string-cardinal n key: (e3 0) allow-other-keys:)
(cond [(< n 0) (string-append "minus " (number->string-cardinal (- n)))]
[else
(let loop ((n n) ; Remaining part of number
(e3 e3) ; tenth exporent, divided by three
(have-larger #f) ; Is there a larger part of this number
)
(cond
[(= n 0) "noll"]
[(and (= n 1) (= e3 0)) "ett"]
[(and (= n 1) (= e3 1)) "ettusen"]
[(= n 1) (string-append "en" (exp-name e3))]
[(= n 2) (string-append "två" (exp-name e3))]
[(= n 3) (string-append "tre" (exp-name e3))]
[(= n 4) (string-append "fyra" (exp-name e3))]
[(= n 5) (string-append "fem" (exp-name e3))]
[(= n 6) (string-append "sex" (exp-name e3))]
[(= n 7) (string-append "sju" (exp-name e3))]
[(= n 8) (string-append "åtta" (exp-name e3))]
[(= n 9) (string-append "nio" (exp-name e3))]
[(= n 10) (string-append "tio" (exp-name e3))]
[(= n 11) (string-append "elva" (exp-name e3))]
[(= n 12) (string-append "tolv" (exp-name e3))]
[(= n 13) (string-append "tretton" (exp-name e3))]
[(= n 14) (string-append "fjorton" (exp-name e3))]
[(= n 15) (string-append "femton" (exp-name e3))]
[(= n 16) (string-append "sexton" (exp-name e3))]
[(= n 17) (string-append "sjutton" (exp-name e3))]
[(= n 18) (string-append "arton" (exp-name e3))]
[(= n 19) (string-append "nitton" (exp-name e3))]
[(<= 20 n 99)
(let ((tens ones (floor/ n 10)))
(string-append
(case tens
((2) "tjugo")
((3) "trettio")
((4) "fyrtio")
((5) "femtio")
((6) "sextio")
((7) "sjuttio")
((8) "åttio")
((9) "nittio"))
(if (zero? ones)
"" (number->string-cardinal ones))
(exp-name e3)))]
[(<= 100 n 999)
(let ((big small (floor/ n 100)))
(string-append
(number->string-cardinal big)
"hundra"
(if (zero? small)
""
(number->string-cardinal small))
(if (and have-larger (= e3 1)) " " "")
(exp-name e3)))]
[(< n maxnum)
(let ((head tail (floor/ n 1000)))
(string-append
(loop head (+ e3 1) #f)
(cond ((= 1 head) "")
((= 0 (floor-remainder head 1000)) "")
((>= e3 1) "er")
(else ""))
(cond ((= 0 tail) "")
(else (string-append
" " (loop tail e3 #t))))))]
[else
;; I give up, don't have larger numbers that that!
(string-append "det stora talet "
(number->exponential-form n))]))]))
(define* (number->string-ordinal
n key: a-form? allow-other-keys:)
(define a-string (if a-form? "a" "e"))
(define (main-part n e)
(case e
((0) (cond [(>= -3 n) (string-append (number->string-ordinal (- n) a-form?: a-form?) " 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 19)
(string-append
(number->string-cardinal n)
"de")]
[(<= 20 n 99)
(let ((big small (floor/ n 10)))
(string-append
(number->string-cardinal (* 10 big))
(if (zero? small)
"nde"
(number->string-ordinal
small a-form?: a-form?))))]
[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?))))]))
((1) (string-append (number->string-cardinal n) "tusende"))
(else (string-append
(if (= n 1) "" (string-append (number->string-cardinal n) " "))
(last (words (number->string-cardinal (expt 10 (* 3 e)))))
(if (even? e) "te" "e")))))
(if (> n maxnum)
(string-append (number->exponential-form n) ":e")
(let loop ((n n) (e 0))
(if (> 1000 n)
(main-part n e)
(let ((a b (floor/ n 1000)))
(cond ((zero? b)
(loop a (1+ e)))
(else
(string-append
(number->string-cardinal a e3: (1+ e))
" "
(number->string-ordinal b 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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