mtran.scm

#!/usr/local/bin/gosh

(use sxml.ssax)
(use sxml.sxpath)
(use rfc.http)
(use rfc.uri)
(use gauche.parseopt)
(use gauche.charconv)

(define api-key "SET YOUR API-KEY INTO THIS!")

(define (usage)
  (print "Usage: mtran [options ...] text")
  (print "  - f|from : from lang")
  (print "  - t|to : to lang")
  (print "  - s|swap : swap 'from lang' to 'to lang'")
  (print "  - h|help : usage")
  (exit 2))

(define (print-languages)
  (print "English  -  en")
  (print "Japanese  -  ja")
  (print "French  -  fr")
  (exit 2))

(define (call-translator-api text :optional (from "en")(to "ja"))
  (receive (status head body)
      (http-get "api.microsofttranslator.com"
                (string-append
                 "/V2/Http.svc/Translate?appid=" api-key
                 "&from=" from
                 "&to=" to
                 "&text=" text))
    (ssax:xml->sxml (open-input-string body) '())))

(define (main args)
  (let-args (cdr args)
      ((from "f|from=s" "en")
       (to "t|to=s" "ja")
       (swap "s|swap")
       (lang "l|languages" => print-languages)
       (help "h|help" => usage)
       (else (opt . _)
             (print "Unknown option : " opt)
             (usage))
       . rest)
    (let ((text (if (null? rest)
                    (port->string (current-input-port))
                    (car rest))))
      (when swap
        (let1 temp from
          (set! from to)
          (set! to temp)))
      (let1 ret ((sxpath "/*/text()")
                 (call-translator-api (uri-encode-string text) from to))
        (print (if (null? ret)
                   "something wrong."
                   (car ret)))))))