;;;; uclip.lisp
 
 (in-package #:uclip)
 
 
 
 (defvar *current-clipboard*)
 (defun init ()
   (restore 'uclip) 
   (setf *current-clipboard* (defaulted-value "main" 'current-clipboard)))
 
 (defun copy (argv)
   (init)
   (push (cond ((null (cdr argv))
                (apply #'concatenate
                       (list* 'string
                              (loop for a := (read-line *standard-input* nil)
                                    while (not (null a))
                                    collect (format nil "~a~%" a)))))
               (t (format nil "~{~a~^ ~}" (cdr argv))))
         (value 'clipboard *current-clipboard*)))
 
 (defun paste (argv)
   (init) 
   (let ((*current-clipboard*
           (if (cdr argv) (cadr argv) *current-clipboard*)))
     (awhen (car (value 'clipboard *current-clipboard*))
       (format t "~a" it))))
 

 (defun tee (argv)
   (copy argv)
   (paste nil))
 

 (defun switch-clipboards (argv)
   (init) 
   (setf *current-clipboard*
         (setf (value 'current-clipboard) (cadr argv))))
 
 (defun pop-clipboard (argv)
   (declare (ignore argv))
   (init) 
   (when (value 'clipboard *current-clipboard*)
     (format t "~a" (pop (value 'clipboard *current-clipboard*)))))

 
 (defun show-clipboard-contents (argv)
   (init)
   (let*  ((*current-clipboard* (aif (cdr argv) (car it) *current-clipboard*))
           (current-clipboard (value 'clipboard *current-clipboard*))
           (cc-length (length current-clipboard))
           (show-length (min cc-length
                             (or (awhen (cddr argv) (parse-integer (car it) :junk-allowed t))
                                 5)))
           (current-clipboard (subseq current-clipboard 0 show-length)))
     (when (> cc-length 0)
       (format t "~&~{~a~&~^---~%~}" current-clipboard))))
 
 (defun list-clipboards (argv)
   (init)
   (format t "~&~{~a~%~}" (hash-table-keys (value 'clipboard))))
 
 (defun clear-clipboard (argv)
   (declare (ignore argv))
   (init)
   (setf (value 'clipboard *current-clipboard*) nil))