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[Helm] Speed up recursive directory traversal in helm shortcut 

By copying and adapting the code of ‘directory-files-recursively’
This commit is contained in:
Daniel - 2017-10-27 20:47:34 +02:00
parent a0b5d317a1
commit 26e44b1d55
Signed by: dbo
GPG Key ID: 4F63DB96D45AA9C6
1 changed files with 26 additions and 9 deletions
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35
site-lisp/db-utils.el
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@ -291,15 +291,32 @@ If FILE is not given, prompt for one."
:type 'string)
(defun db/important-documents ()
"Recursively return paths of all important documents found in `db/important-documents-path’."
(when (file-directory-p db/important-documents-path)
(delete-if ; FIXME: dump, make better
(lambda (spec)
(eq ?. (elt (car spec) 0)))
(mapcar (lambda (path)
(cons (string-remove-prefix db/important-documents-path path)
path))
(directory-files-recursively db/important-documents-path "")))))
"Recursively return paths of all files found in `db/important-documents-path’.
The result will be a list of cons cells, where the car is the
path relative to `db/important-documents’ and the cdr is the full
path."
;; code adapted from `directory-files-recursively’
(cl-labels ((all-files-in-dir (dir)
(let ((result nil)
(files nil))
(dolist (file (sort (file-name-all-completions "" dir)
'string<))
(unless (eq ?. (aref file 0)) ; omit hidden files
(if (directory-name-p file)
(let* ((leaf (substring file 0 (1- (length file))))
(full-file (expand-file-name leaf dir)))
;; Don't follow symlinks to other directories.
(unless (file-symlink-p full-file)
(setq result
(nconc result (all-files-in-dir full-file)))))
(push (cons
(string-remove-prefix db/important-documents-path
(expand-file-name file dir))
(expand-file-name file dir))
files))))
(nconc result (nreverse files)))))
(when (file-directory-p db/important-documents-path)
(all-files-in-dir db/important-documents-path))))
(defun db/system-open (path)
"Open PATH with default program as defined by the underlying system."