1 files changed, 31 insertions, 0 deletions
diff --git a/scripts/theme-selector/build-inventory.el b/scripts/theme-selector/build-inventory.el
new file mode 100644
index 00000000..52e14baa
--- /dev/null
+++ b/scripts/theme-selector/build-inventory.el
@@ -0,0 +1,31 @@
+;;; build-inventory.el --- emit package->faces inventory for theme-selector -*- lexical-binding: t -*-
+;;; Commentary:
+;; Loaded into a running Emacs (emacsclient -e '(load ".../build-inventory.el")')
+;; to write package-inventory.json next to itself: a JSON object mapping each
+;; installed (elpa/straight) package to the faces it defines, grouped by the
+;; package that owns the face's definition file. Built-in faces are skipped.
+;; generate.py embeds the JSON so the theme-selector dropdown can reach every
+;; installed package (tier-3 phase 6, the "theme every package" path).
+;;; Code:
+
+(require 'json)
+
+(let ((h (make-hash-table :test 'equal)))
+  (dolist (f (face-list))
+    (let* ((file (ignore-errors (symbol-file f 'defface)))
+           (pkg (and (stringp file)
+                     (string-match "/\\(?:elpa\\|straight/build\\|site-lisp\\)/\\([a-zA-Z0-9._-]+?\\)-[0-9][^/]*/" file)
+                     (match-string 1 file))))
+      (when pkg (push (symbol-name f) (gethash pkg h)))))
+  (let (al)
+    (maphash (lambda (k v) (push (cons (intern k) (sort v #'string<)) al)) h)
+    (setq al (sort al (lambda (a b) (string< (symbol-name (car a)) (symbol-name (car b))))))
+    (with-temp-file (expand-file-name
+                     "package-inventory.json"
+                     (file-name-directory (or load-file-name buffer-file-name
+                                              "~/.emacs.d/scripts/theme-selector/")))
+      (let ((json-encoding-pretty-print t))
+        (insert (json-encode al) "\n")))))
+
+(provide 'build-inventory)
+;;; build-inventory.el ends here