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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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Task/Unix-ls/Common-Lisp/unix-ls.lisp Normal file
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(defun files-list (&optional (path "."))
(let* ((dir (concatenate 'string path "/"))
(abs-path (car (directory dir)))
(file-pattern (concatenate 'string dir "*"))
(subdir-pattern (concatenate 'string file-pattern "/")))
(remove-duplicates
(mapcar (lambda (p) (enough-namestring p abs-path))
(mapcan #'directory (list file-pattern subdir-pattern)))
:test #'string-equal)))
(defun ls (&optional (path "."))
(format t "~{~a~%~}" (sort (files-list path) #'string-lessp)))