blob: c6102a1b065c3ce0f3f3bce14382429cf6c1221e (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
;;; company-files.el --- company-mode completion backend for file names
;; Copyright (C) 2009-2011, 2014-2015 Free Software Foundation, Inc.
;; Author: Nikolaj Schumacher
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;;; Code:
(require 'company)
(require 'cl-lib)
(defgroup company-files nil
"Completion backend for file names."
:group 'company)
(defcustom company-files-exclusions nil
"File name extensions and directory names to ignore.
The values should use the same format as `completion-ignored-extensions'."
:type '(const string)
:package-version '(company . "0.9.1"))
(defun company-files--directory-files (dir prefix)
;; Don't use directory-files. It produces directories without trailing /.
(condition-case err
(let ((comp (sort (file-name-all-completions prefix dir)
(lambda (s1 s2) (string-lessp (downcase s1) (downcase s2))))))
(when company-files-exclusions
(setq comp (company-files--exclusions-filtered comp)))
(if (equal prefix "")
(delete "../" (delete "./" comp))
comp))
(file-error nil)))
(defun company-files--exclusions-filtered (completions)
(let* ((dir-exclusions (cl-delete-if-not #'company-files--trailing-slash-p
company-files-exclusions))
(file-exclusions (cl-set-difference company-files-exclusions
dir-exclusions)))
(cl-loop for c in completions
unless (if (company-files--trailing-slash-p c)
(member c dir-exclusions)
(cl-find-if (lambda (exclusion)
(string-suffix-p exclusion c))
file-exclusions))
collect c)))
(defvar company-files--regexps
(let* ((root (if (eq system-type 'windows-nt)
"[a-zA-Z]:/"
"/"))
(begin (concat "\\(?:\\.\\{1,2\\}/\\|~/\\|" root "\\)")))
(list (concat "\"\\(" begin "[^\"\n]*\\)")
(concat "\'\\(" begin "[^\'\n]*\\)")
(concat "\\(?:[ \t=]\\|^\\)\\(" begin "[^ \t\n]*\\)"))))
(defun company-files--grab-existing-name ()
;; Grab the file name.
;; When surrounded with quotes, it can include spaces.
(let (file dir)
(and (cl-dolist (regexp company-files--regexps)
(when (setq file (company-grab-line regexp 1))
(cl-return file)))
(company-files--connected-p file)
(setq dir (file-name-directory file))
(not (string-match "//" dir))
(file-exists-p dir)
file)))
(defun company-files--connected-p (file)
(or (not (file-remote-p file))
(file-remote-p file nil t)))
(defun company-files--trailing-slash-p (file)
;; `file-directory-p' is very expensive on remotes. We are relying on
;; `file-name-all-completions' returning directories with trailing / instead.
(let ((len (length file)))
(and (> len 0) (eq (aref file (1- len)) ?/))))
(defvar company-files--completion-cache nil)
(defun company-files--complete (prefix)
(let* ((dir (file-name-directory prefix))
(file (file-name-nondirectory prefix))
(key (list file
(expand-file-name dir)
(nth 5 (file-attributes dir))))
(completion-ignore-case read-file-name-completion-ignore-case))
(unless (company-file--keys-match-p key (car company-files--completion-cache))
(let* ((candidates (mapcar (lambda (f) (concat dir f))
(company-files--directory-files dir file)))
(directories (unless (file-remote-p dir)
(cl-remove-if-not (lambda (f)
(and (company-files--trailing-slash-p f)
(not (file-remote-p f))
(company-files--connected-p f)))
candidates)))
(children (and directories
(cl-mapcan (lambda (d)
(mapcar (lambda (c) (concat d c))
(company-files--directory-files d "")))
directories))))
(setq company-files--completion-cache
(cons key (append candidates children)))))
(all-completions prefix
(cdr company-files--completion-cache))))
(defun company-file--keys-match-p (new old)
(and (equal (cdr old) (cdr new))
(string-prefix-p (car old) (car new))))
;;;###autoload
(defun company-files (command &optional arg &rest ignored)
"`company-mode' completion backend existing file names.
Completions works for proper absolute and relative files paths.
File paths with spaces are only supported inside strings."
(interactive (list 'interactive))
(cl-case command
(interactive (company-begin-backend 'company-files))
(prefix (company-files--grab-existing-name))
(candidates (company-files--complete arg))
(location (cons (dired-noselect
(file-name-directory (directory-file-name arg))) 1))
(post-completion (when (company-files--trailing-slash-p arg)
(delete-char -1)))
(sorted t)
(no-cache t)))
(provide 'company-files)
;;; company-files.el ends here
|
