Add error-reporting to UNIX cli client

This commit is contained in:
Jaidyn Ann 2024-05-31 15:48:43 -05:00
parent 1097b4d0b3
commit 7604512684

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@ -41,21 +41,21 @@
;; NIL → NIL
(defun main ()
"Actual invocation of the program. This is what you should set as :toplevel."
(multiple-value-bind (opts free) (opts:get-opts)
(when-opt opts :help (help))
(let* ((input-file (pathname (car free)))
(url-base (or (getf opts :url-base) (getf opts :download-dir) "mirror/"))
(download-dir (or (getf opts :download-dir) url-base)))
(when (not input-file)
(format *error-output* "No file provided.~%")
(help 2))
(format
't
(mirror-img:mirror-img
input-file
download-dir
:url-dir url-base)))))
(error-print
99 ""
(multiple-value-bind (opts free) (opts:get-opts)
(when-opt opts :help (help))
(let* ((input-file (car free))
(url-base (or (getf opts :url-base) (getf opts :download-dir) "mirror/"))
(download-dir (or (getf opts :download-dir) url-base)))
(when (not input-file)
(error-print 1 "No HTML file provided. Use --help for more information."))
(format
't
(mirror-img:mirror-img
(pathname input-file)
download-dir
:url-dir url-base))))))
(opts:define-opts
(:name :help
@ -67,8 +67,12 @@
(:name :download-dir
:description "directory for all mirrored files"
:short #\d :long "downloads"
:arg-parser (lambda (dir)
(car (directory dir)))))
:arg-parser
(lambda (dir)
(handler-case
(ensure-directories-exist dir)
(error (c)
(error-print 11 "Could not access or create directory." c))))))
;; number stream → nil
(defun help (&optional (exit-code 0) (stream *standard-output*))
@ -76,3 +80,9 @@
(unix-opts:describe :prefix "usage: mirror-img [-h] [-d DIR] [-b BASE] HTML_FILE"
:stream stream)
(unix-opts:exit exit-code))
;; number string condition → nil
(defun error-print (exit-code &optional message condition)
"Print an error-message and exit."
(format *error-output* "~@[~A~%~]~@[~A~%~]" message condition)
(unix-opts:exit exit-code))