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Allow changing the directory for history and cache #9

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29 changes: 27 additions & 2 deletions copilot.el
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Original file line number Diff line number Diff line change
Expand Up @@ -77,14 +77,37 @@
:type 'string
:group 'copilot)

(defcustom copilot-cache-directory-alist nil
"Alist of filename patterns and directory names.
Each element looks like (REGEXP . DIRECTORY).

See the documentation of the `backup-directory-alist' variable
for details."
:group 'copilot
:type '(repeat (cons (regexp :tag "Regexp matching filename")
(directory :tag "Directory to store cache and prompt"))))

(defun copilot-make-cache-file-name (file suffix)
"Create the cache file name for FILE.
Normally this is the file's name with \".\" prepended and
\"SUFFIX\" appended.

A match for FILE is sought in `copilot-cache-directory-alist'
\(see the documentation of that variable for details\). If the
directory for the backup doesn't exist, it is created."
(let* ((backup-directory-alist copilot-cache-directory-alist)
(name (make-backup-file-name-1 file)))
(concat (file-name-directory name) "." (file-name-nondirectory name)
suffix)))

;;;###autoload
(defun copilot-complete ()
(interactive)
(let* ((spot (point))
(inhibit-quit t)
(curfile (buffer-file-name))
(cash (concat curfile ".cache"))
(hist (concat curfile ".prompt"))
(cash (copilot-make-cache-file-name curfile ".cache"))
(hist (copilot-make-cache-file-name curfile ".prompt"))
(lang (file-name-extension curfile))

;; extract current line, to left of caret
Expand Down Expand Up @@ -120,9 +143,11 @@ Writing English explanations is forbidden. ")
(kill-buffer (current-buffer))))

;; append prompt for current interaction to the big old prompt
(make-directory (file-name-directory hist) t)
(write-region prompt nil hist 'append 'silent)

;; run llamafile streaming stdout into buffer catching ctrl-g
(make-directory (file-name-directory cash) t)
(with-local-quit
(call-process copilot-bin nil (list (current-buffer) nil) t
"--prompt-cache" cash
Expand Down