(module io-utilities-scheme mzscheme
  (provide file->string
           string-list->file)
  
  (define (file->string fname state)
    (with-handlers ([exn:fail:filesystem? 
                     (lambda (e) 
                       (list '() 
                             (string-append "Error while opening file for input: " fname)
                             state))])
      (with-input-from-file fname
        (lambda ()
          (let ([str (make-string (file-size fname))])
            (read-string! str)
            (list str '() state))))))
  
  (define (string-list->string strlist)
    (if (null? strlist) 
        ""
        (string-append (car strlist) "\n" (string-list->string (cdr strlist)))))
  
  (define (string-list->file fname strlist state)
    (with-handlers ([exn:fail:filesystem?
                     (lambda (e) 
                       (list (string-append "Error while opening file for output: " fname) 
                             state))])
      (with-output-to-file fname
        (lambda ()
          (write-string (string-list->string strlist))
          (list '() state)))))
          
  )