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Diffstat (limited to 'l/src/option.lisp')
| -rw-r--r-- | l/src/option.lisp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/l/src/option.lisp b/l/src/option.lisp index 6965b71..3c266ea 100644 --- a/l/src/option.lisp +++ b/l/src/option.lisp @@ -1,19 +1,27 @@ +;;;; Command line options. + (in-package :extreload) (defmacro when-option ((options option) &body body) + "When `option` is present in `options`, run `body`." `(let ((value (getf ,options ,option))) (when value ,@body))) (defun exit-with-error (condition exit-code) + "Print the error associated with `condition` on standard error, then exit +with code `exit-code`." (format *error-output* "error: ~a~%" condition) (opts:exit exit-code)) (defun handle-option-error (condition) + "Handle errors related to command line options. Prints the error specified by +`condition` and exits with EX_USAGE." (exit-with-error condition sysexits:+usage+)) (defun parse-options () + "Parse command line options." (multiple-value-bind (options free-args) (handler-bind ((opts:unknown-option #'handle-option-error) |