Merge branch 'master' into issue-151--dot-variables

Conflicts:
	sx.el

1 files changed, 34 insertions, 0 deletions

diff --git a/sx.el b/sx.el
index 97a6d61..d93719e 100644
--- a/sx.el
+++ b/sx.el
@@ -51,6 +51,40 @@
   (browse-url "https://github.com/vermiculus/sx.el/issues/new"))
 
 
+;;; Site
+(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)))))
+    (when (stringp link)
+      (replace-regexp-in-string
+       "^https?://\\(?:\\(?1:[^/]+\\)\\.stackexchange\\|\\(?2:[^/]+\\)\\)\\.[^.]+/.*$"
+       "\\1\\2" link))))
+
+(defun sx--ensure-site (data)
+  "Add a `site' property to DATA if it doesn't have one. Return DATA.
+DATA can be a question, answer, comment, or user (or any object
+with a `link' property)."
+  (when data
+    (unless (assq 'site data)
+      (setcdr data (cons (cons 'site (sx--site data))
+                         (cdr data))))
+    data))
+
+(defmacro sx-assoc-let (alist &rest body)
+  "Identical to `let-alist', except `.site' has a special meaning.
+If ALIST doesn't have a `site' property, one is created using the
+`link' property."
+  (declare (indent 1) (debug t))
+  `(progn
+     (require 'let-alist)
+     (sx--ensure-site ,alist)
+     (let-alist ,alist ,@body)))
+
+
 ;;; Browsing filter
 (defvar sx-browse-filter
   '((question.body_markdown