50 lines
1 KiB
Common Lisp
50 lines
1 KiB
Common Lisp
(defun hello ()
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(format t "hello, wordl!"))
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(defun list_test ()
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(getf (list :a 1 :b 2 :c 3) :a))
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(defvar *db* nil)
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(defun make-cd (title artist rating ripped)
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(list :title title :artist artist :rating rating :ripped ripped))
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(defun add-record (cd)
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(push cd *db*))
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(defun dump-db ()
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(dolist (cd *db*)
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(format t "~{~a:~9t~a~%~}~%" cd)))
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(defun prompt-read (prompt)
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(format *query-io* "~a: " prompt)
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(force-output *query-io*)
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(read-line *query-io*))
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(defun prompt-for-cd ()
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(make-cd
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(prompt-read "Title")
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(prompt-read "Artist")
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(or (parse-integer (prompt-read "Rating") :junk-allowed t) 0)
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(y-or-n-p "Ripped [y/n]: ")))
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(defun save-db (filename)
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(with-open-file (out filename
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:direction :output
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:if-exists :supersede)
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(with-standard-io-syntax
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(print *db* out))))
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(defun load-db (filename)
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(with-open-file (in filename)
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(with-standard-io-syntax
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(setf *db* (read in)))))
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(defun select-by-artist (artist)
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(remove-if-not
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#'(lambda (cd) (equal (getf cd :artist) artist))
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*db*))
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(format *query-io* "hello~%")
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