diff options
Diffstat (limited to 'sx.el')
| -rw-r--r-- | sx.el | 27 |
1 files changed, 22 insertions, 5 deletions
@@ -186,6 +186,19 @@ If DATA is a question, also mark it as read." ;;; Assoc-let +(defun sx--site (data) + "Get the site in which DATA belongs. +DATA can be a question, answer, comment, or user (or any object +with a `link' property). +DATA can also be the link itself." + (let ((link (if (stringp data) data + (cdr (assoc 'link data))))) + (unless (stringp link) + (error "Data has no link property")) + (replace-regexp-in-string + "^https?://\\(?:\\(?1:[^/]+\\)\\.stackexchange\\|\\(?2:[^/]+\\)\\)\\.[^.]+/.*$" + "\\1\\2" link))) + (defun sx--deep-dot-search (data) "Find symbols somewhere inside DATA which start with a `.'. Returns a list where each element is a cons cell. The car is the @@ -206,6 +219,8 @@ symbol, the cdr is the symbol without the `.'." "Use dotted symbols let-bound to their values in ALIST and execute BODY. Dotted symbol is any symbol starting with a `.'. Only those present in BODY are letbound, which leads to optimal performance. +The .site symbol is special, it is derived from the .link symbol +using `sx--site'. For instance, the following code @@ -217,11 +232,13 @@ is equivalent to (let ((.title (cdr (assoc 'title alist))) (.body (cdr (assoc 'body alist)))) (list .title .body))" - (declare (indent 1) - (debug t)) - (let ((symbol-alist (sx--deep-dot-search body))) - `(let ,(mapcar (lambda (x) `(,(car x) (cdr (assoc ',(cdr x) ,alist)))) - (delete-dups symbol-alist)) + (declare (indent 1) (debug t)) + (let* ((symbol-alist (sx--deep-dot-search body)) + (has-site (assoc '.site symbol-alist))) + `(let ,(append + (when has-site `((.site (sx--site (cdr (assoc 'link ,alist)))))) + (mapcar (lambda (x) `(,(car x) (cdr (assoc ',(cdr x) ,alist)))) + (remove '(.site . site) (delete-dups symbol-alist)))) ,@body))) (defcustom sx-init-hook nil |