1 ;;; company-files.el --- company-mode completion back-end for file names
3 ;; Copyright (C) 2009-2011, 2013 Free Software Foundation, Inc.
5 ;; Author: Nikolaj Schumacher
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software: you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation, either version 3 of the License, or
12 ;; (at your option) any later version.
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
29 (eval-when-compile (require 'cl))
31 (defun company-files-directory-files (dir prefix)
34 (directory-files dir nil "\\`[^.]\\|\\`.[^.]")
35 (file-name-all-completions prefix dir))))
37 (defvar company-files-regexps
38 (let ((begin (if (eq system-type 'windows-nt)
41 (list (concat "\"\\(" begin "[^\"\n]*\\)")
42 (concat "\'\\(" begin "[^\'\n]*\\)")
43 (concat "\\(?:[ \t]\\|^\\)\\(" begin "[^ \t\n]*\\)"))))
45 (defun company-files-grab-existing-name ()
46 ;; Grab file names with spaces, only when they include quotes.
48 (and (dolist (regexp company-files-regexps)
49 (when (setq file (company-grab-line regexp 1))
51 (setq dir (file-name-directory file))
52 (not (string-match "//" dir))
54 (file-name-all-completions (file-name-nondirectory file) dir)
57 (defvar company-files-completion-cache nil)
59 (defun company-files-complete (prefix)
60 (let* ((dir (file-name-directory prefix))
61 (file (file-name-nondirectory prefix))
63 (unless (equal dir (car company-files-completion-cache))
64 (dolist (file (company-files-directory-files dir file))
65 (setq file (concat dir file))
66 (push file candidates)
67 (when (file-directory-p file)
68 ;; Add one level of children.
69 (dolist (child (company-files-directory-files file ""))
71 (unless (eq (aref file (1- (length file))) ?/) "/")
73 (setq company-files-completion-cache (cons dir (nreverse candidates))))
74 (cdr company-files-completion-cache)))
77 (defun company-files (command &optional arg &rest ignored)
78 "`company-mode' completion back-end existing file names."
79 (interactive (list 'interactive))
81 (interactive (company-begin-backend 'company-files))
82 (prefix (company-files-grab-existing-name))
83 (candidates (company-files-complete arg))
84 (location (cons (dired-noselect
85 (file-name-directory (directory-file-name arg))) 1))
89 (provide 'company-files)
90 ;;; company-files.el ends here