;;; acdw.el --- various meta-whatevers -*- lexical-binding: t -*-

;;; Commentary:

;; What's that saying about how the hardest things in computer science
;; are naming and off-by-one errors?  Well, the naming one I know very
;; well.  I've been trying to figure out a good way to prefix my
;; bespoke functions, other stuff I found online, and various emacs
;; lisp detritus for quite some time (I reckon at over a year, as of
;; 2021-11-02).  Finally, I found the answer in the writings of Daniel
;; Mendler: I'll prefix everything with a `+' !

;; To that end, pretty much everything in lisp/ will have a filename
;; like "+org.el", except of course this file, and maybe a few
;; /actually original/ libraries I haven't had the wherewithal to
;; package out properly yet.

;; Is it perfect?  No.  Is it fine?  Yes.  Here it is.

;;; Code:

;;; Define a directory and an expanding function

(defmacro +define-dir (name directory &optional docstring inhibit-mkdir)
  "Define a variable and function NAME expanding to DIRECTORY.
DOCSTRING is applied to the variable.  Ensure DIRECTORY exists in
the filesystem, unless INHIBIT-MKDIR is non-nil."
  (declare (indent 2))
  (unless inhibit-mkdir
    (make-directory (eval directory) :parents))
  `(progn
     (defvar ,name ,directory
       ,(concat docstring (when docstring "\n")
                "Defined by `/define-dir'."))
     (defun ,name (file &optional mkdir)
       ,(concat "Expand FILE relative to variable `" (symbol-name name) "'.\n"
                "If MKDIR is non-nil, the directory is created.\n"
                "Defined by `/define-dir'.")
       (let ((file-name (expand-file-name (convert-standard-filename file)
					  ,name)))
         (when mkdir
           (make-directory (file-name-directory file-name) :parents))
         file-name))))

(provide 'acdw)
;;; acdw.el ends here