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(defvar *default-db-name* (expand-file-name "~/.xemacs/lisp-file-database")
"Default location of the database")
(defun build-lisp-file-db (&optional db-name path rebuild)
"Create a database of all lisp files in the directories given by PATH.
DB-NAME is the database name, defaulting to *default-db-name*
PATH is a list of directories to search, defaulting to load-path.
REBUILD "
(let ((path (or path load-path))
(db (open-database (or db-name *default-db-name*) nil nil "rw+")))
;; For each entry in path, find all files in it and put them in
;; the database.
(dolist (dir path)
(dolist (file (directory-files dir t nil t t))
;; Separate the file name and the directory. The key is the
;; filename, and the value is the whole pathname. However, if
;; the key already exists, DON'T put that entry in. We want
;; things that occur first in load-path to override entries
;; later in load-path
(let ((fname (file-name-nondirectory file)))
(put-database fname file db nil))))))
(defun show-lisp-db (&optional db-name)
(let ((db (open-database (or db-name *default-db-name*) nil nil "r"))
(entries '()))
(map-database #'(lambda (key val)
(push (cons key val) entries))
db)
(nreverse entries)))
(defun lookup-lisp-file-db (file &optional db-name)
(let ((name (file-name-nondirectory file))
(db (open-database (or db-name *default-db-name*) nil nil "r")))
(do* ((ext '("" ".elc" ".el") (rest ext))
(entry (get-database (concat name (first ext)) db)
(get-database (concat name (first ext)) db)))
((or entry (null ext)) entry)
())))
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