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#lang racket/base
(require (for-syntax racket/base
racket/list
(prefix-in english-ct: "private/english-string-constants.rkt"))
racket/file
racket/contract/base
(prefix-in english: "private/english-string-constants.rkt")
(prefix-in spanish: "private/spanish-string-constants.rkt")
(prefix-in german: "private/german-string-constants.rkt")
(prefix-in french: "private/french-string-constants.rkt")
(prefix-in dutch: "private/dutch-string-constants.rkt")
(prefix-in danish: "private/danish-string-constants.rkt")
(prefix-in portuguese: "private/portuguese-string-constants.rkt")
(prefix-in japanese: "private/japanese-string-constants.rkt")
(prefix-in traditional-chinese: "private/traditional-chinese-string-constants.rkt")
(prefix-in simplified-chinese: "private/simplified-chinese-string-constants.rkt")
(prefix-in russian: "private/russian-string-constants.rkt")
(prefix-in ukrainian: "private/ukrainian-string-constants.rkt")
(prefix-in korean: "private/korean-string-constants.rkt")
(prefix-in bulgarian: "private/bulgarian-string-constants.rkt"))
(provide string-constant string-constants
this-language all-languages set-language-pref)
(provide
(contract-out
[string-constant? (-> any/c boolean?)]
[dynamic-string-constant (-> string-constant? string?)]
[dynamic-string-constants (-> string-constant? (listof string?))]))
;; set-language-pref : symbol -> void
(define (set-language-pref language)
(put-preferences (list 'plt:human-language) (list language)))
;; table : (listof (list symbol regexp regexp))
;; this table indicates what the default value of the natural language
;; preference is. the first regexp is used under Windows and the second
;; is used on other platforms. All regexps are compared to the result
;; of (system-language+country)
(define table
'((english #rx"^en_" #rx"^English_")
(spanish #rx"^es_" #rx"^Espanol_")
(german #rx"^de_" #rx"^German_")
(french #rx"^fr_" #rx"French_")
(dutch #rx"nl_" #rx"^Netherlands_")
(danish #rx"^da_DK" #rx"^Danish_")
(portuguese #rx"^pt_" #rx"Portuguese_")
(japanese #rx"^ja_" #rx"^Japan_")
(traditional-chinese #rx"^zh_(HK|TW)" #rx"Chinese_(Hong|Taiwan)")
(simplified-chinese #rx"^zh_CN" #rx"Chinese_China")
(russian #rx"^ru_" #rx"^Russian_")
(ukrainian #rx"^uk_" #rx"^Ukrainian_")
(korean #rx"^ko_" #rx"^Korean_")
(bulgarian #rx"^bg_" #rx"^Bulgarian_")))
;; default-language : -> symbol
;; uses `table' and system-language+contry to find what language to start with
(define (default-language)
(let ([slc (system-language+country)])
(let loop ([table table])
(if (null? table)
'english
(let ([ent (car table)])
(if (or (regexp-match (cadr ent) slc)
(and (cddr ent)
(regexp-match (caddr ent) slc)))
(car ent)
(loop (cdr table))))))))
(define-struct sc (language-name constants [ht #:mutable]))
(define available-string-constant-sets
(list
(make-sc 'english english:string-constants #f)
(make-sc 'spanish spanish:string-constants #f)
(make-sc 'french french:string-constants #f)
(make-sc 'german german:string-constants #f)
(make-sc 'dutch dutch:string-constants #f)
(make-sc 'danish danish:string-constants #f)
(make-sc 'portuguese portuguese:string-constants #f)
(make-sc 'japanese japanese:string-constants #f)
(make-sc 'traditional-chinese traditional-chinese:string-constants #f)
(make-sc 'simplified-chinese simplified-chinese:string-constants #f)
(make-sc 'russian russian:string-constants #f)
(make-sc 'ukrainian ukrainian:string-constants #f)
(make-sc 'korean korean:string-constants #f)
(make-sc 'bulgarian bulgarian:string-constants #f)))
(define first-string-constant-set (car available-string-constant-sets))
;; language : symbol
(define language
(with-handlers ([exn:fail? (lambda (_) (default-language))])
(get-preference 'plt:human-language (lambda () (default-language)))))
(define the-sc
(or (for/or ([sc (in-list available-string-constant-sets)])
(and (equal? language (sc-language-name sc))
sc))
first-string-constant-set))
(define (dynamic-string-constant key)
(dynamic-string-constant/who the-sc key 'dynamic-string-constant))
(define (dynamic-string-constants key)
(for/list ([sc (in-list available-string-constant-sets)])
(dynamic-string-constant/who sc key 'dynamic-string-constants)))
(define (dynamic-string-constant/who an-sc key who)
(show-warning-message)
(hash-ref (sc-constants an-sc) key
(λ ()
(hash-ref (sc-constants first-string-constant-set)
key
(λ ()
(error who
"unknown string-constant\n key: ~e" key))))))
(define (string-constant? sym)
(and (hash-ref (sc-constants first-string-constant-set) sym #f)
#t))
(define already-warned? #f)
(define (show-warning-message)
(when env-var-set
(unless already-warned?
(set! already-warned? #t)
;; type no-warning-cache-key = (cons symbol symbol)
;; warning-table : (listof (list no-warning-cache-key (listof (list sym string))))
(define warning-table null)
(define (extract-ht sc)
(unless (sc-ht sc)
(define ht (make-hash))
(for ([(ent val) (in-hash (sc-constants sc))])
(hash-set! ht ent #t))
(set-sc-ht! sc ht))
(sc-ht sc))
(define (check-one-way sc1 sc2)
(define assoc1 (sc-constants sc1))
(define assoc2 (sc-constants sc2))
(define ht2 (extract-ht sc2))
(for ([(constant1 value1) (in-hash assoc1)])
(define pair2 (hash-ref ht2 constant1 #f))
(unless pair2
(define no-warning-cache-key (cons (sc-language-name sc1)
(sc-language-name sc2)))
(when (or (env-var-set? (sc-language-name sc1))
(env-var-set? (sc-language-name sc2)))
(cond
[(memf (lambda (ent) (equal? (mcar ent) no-warning-cache-key))
warning-table)
=>
(lambda (x)
(let ([ent (car x)])
(set-mcdr! ent (cons (list constant1 value1) (mcdr ent)))))]
[else
(set! warning-table (cons (mcons no-warning-cache-key
(list (list constant1 value1)))
warning-table))])))))
(for ([x (in-list (cdr available-string-constant-sets))])
(check-one-way x first-string-constant-set)
(check-one-way first-string-constant-set x))
(define sp (open-output-string))
(for ([bad (in-list warning-table)])
(define lang-pair (mcar bad))
(define constants (mcdr bad))
(define lang1-name (car lang-pair))
(define lang2-name (cdr lang-pair))
(fprintf sp "WARNING: language ~a has but ~a does not:\n"
lang1-name
lang2-name)
(define sorted-constants
(sort constants string<?
#:key (λ (p) (symbol->string (car p)))
#:cache-keys? #t))
(for ([x (in-list sorted-constants)])
(fprintf sp " ~s\n" x))
(newline sp))
(with-handlers ([exn:fail? (lambda (x) (void))])
;; the output port may no longer be there, in which case
;; we just give up on printing
(eprintf "~a" (get-output-string sp))))))
;; env-var-set? : symbol -> boolean
;; returns #t if the user has requested this langage info.
;; If the environment variable is set to something that
;; isn't well-formed according to `read' you get all output
;; If the environment variable is set to a symbol (according to read)
;; you get that language. If it is set to a list of symbols
;; (again, according to read) you get those languages.
;; if it is set to anything else, you get all languages.
(define (env-var-set? lang)
(cond [(symbol? specific) (equal? lang specific)]
[(list? specific) (member lang specific)]
[else #t]))
(define env-var-set
(or (getenv "PLTSTRINGCONSTANTS")
(getenv "STRINGCONSTANTS")))
(define specific
(and env-var-set
(with-handlers ([exn:fail:read? (lambda (x) #t)])
(read (open-input-string env-var-set)))))
(define-for-syntax (check-name name-stx stx)
(define datum (syntax->datum name-stx))
(unless (symbol? datum)
(raise-syntax-error #f (format "expected name, got: ~s" datum) stx))
(define default-val (hash-ref english-ct:string-constants datum #f))
(unless default-val
(raise-syntax-error
#f
(format "~a is not a known string constant" datum)
stx)))
(define-syntax (string-constant stx)
(syntax-case stx ()
[(_ name)
(begin
(check-name #'name stx)
#'(dynamic-string-constant 'name))]))
(define-syntax (string-constants stx)
(syntax-case stx ()
[(_ name)
(begin
(check-name #'name stx)
#'(dynamic-string-constants 'name))]))
(define (this-language) language)
(define (all-languages) (map sc-language-name available-string-constant-sets))
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