-
-
Notifications
You must be signed in to change notification settings - Fork 391
/
helm-external.el
264 lines (238 loc) · 11.8 KB
/
helm-external.el
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
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
;;; helm-external.el --- Run Externals commands within Emacs with helm completion. -*- lexical-binding: t -*-
;; Copyright (C) 2012 ~ 2023 Thierry Volpiatto
;; This program 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.
;; This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
;;; Code:
(require 'cl-lib)
(require 'helm)
(require 'helm-help)
(require 'helm-net)
(declare-function helm-comp-read "helm-mode")
(defgroup helm-external nil
"External related Applications and libraries for Helm."
:group 'helm)
(defcustom helm-raise-command nil
"A shell command to jump to a window running specific program.
Need external program wmctrl.
This will be use with `format', so use something like \"wmctrl -xa %s\"."
:type 'string
:group 'helm-external)
(defcustom helm-external-programs-associations nil
"Alist to store externals programs associated with file extension.
This variable overhide setting in .mailcap file.
E.g.: \\='((\"jpg\" . \"gqview\") (\"pdf\" . \"xpdf\")) "
:type '(alist :key-type string :value-type string)
:group 'helm-external)
(defcustom helm-default-external-file-browser "nautilus"
"Default external file browser for your system.
Directories will be opened externally with it when opening file
externally in `helm-find-files'.
Set to nil if you do not have an external file browser or do not
want to use it.
Windows users should set that to \"explorer.exe\"."
:group 'helm-external
:type 'string)
(defvar helm-open-file-externally-after-hook nil
"Hook that run after opening a file with external program.")
(defvar helm-open-file-externally-after-finish-hook nil
"Hook that run after external program finish.")
;;; Internals
(defvar helm-external-command-history nil)
(defvar helm-external-commands-list nil
"A list of all external commands the user can execute.
If this variable is not set by the user, it will be calculated
automatically.")
(defun helm-external-commands-list-1 (&optional sort)
"Return a list of all external commands the user can execute.
If `helm-external-commands-list' is non-nil it will return its
contents. Else it calculates all external commands and sets
`helm-external-commands-list'."
(or helm-external-commands-list
(setq helm-external-commands-list
(cl-loop for dir in (split-string (getenv "PATH") path-separator)
when (and (file-exists-p dir)
(file-accessible-directory-p dir))
for lsdir = (cl-loop for i in (directory-files dir t)
for bn = (file-name-nondirectory i)
when (and (not (member bn completions))
(not (file-directory-p i))
(file-executable-p i))
collect bn)
append lsdir into completions
finally return
(if sort (sort completions 'string-lessp) completions)))))
(defun helm-run-or-raise (exe &optional files detached)
"Run asynchronously EXE or jump to the application window.
If EXE is already running just jump to his window if
`helm-raise-command' is non-nil.
When FILES argument is provided run EXE with FILES.
When argument DETACHED is non nil, detach process from Emacs."
(let* ((proc-name (replace-regexp-in-string
"(" "" (car (split-string exe))))
(fmt-file (lambda (file)
(shell-quote-argument
(if (eq system-type 'windows-nt)
(helm-w32-prepare-filename file)
(expand-file-name file)))))
(file-arg (and files (mapconcat fmt-file files " ")))
process-connection-type proc)
(when (and files detached (not (string-match "%s &)\\'" exe)))
(setq exe (format "(%s &)" exe)))
(when (member proc-name helm-external-commands-list)
;; Allow adding more files to the current process if it is
;; already running (i.e. Don't just raise it without sending
;; files) we assume program doesn't start a new
;; process (like firefox, transmission etc...).
(if files
(cond ((string-match "%s &)\\'" exe)
(message "Starting and detaching `%s' from Emacs" proc-name)
(call-process-shell-command (format exe file-arg)))
(t
(message "Starting %s..." proc-name)
(setq proc
(start-process-shell-command
proc-name nil (if (string-match "%s" exe)
(format exe file-arg)
(format "%s %s" exe file-arg))))))
;; Just jump to the already running program instance or start
;; a new process.
(if (get-process proc-name)
(if helm-raise-command
(run-at-time 0.1 nil #'shell-command
(format helm-raise-command proc-name))
(error "Error: %s is already running" proc-name))
(if (and detached (not (memq system-type '(windows-nt ms-dos))))
(progn
(message "Starting and detaching `%s' from Emacs" proc-name)
(call-process-shell-command (format "(%s &)" exe)))
(when detached
(user-error "Detaching programs not supported on `%s'" system-type))
(setq proc (start-process-shell-command proc-name nil exe)))))
(when proc
(set-process-sentinel
proc
(lambda (process event)
(when (and (string= event "finished\n")
helm-raise-command
(not (helm-get-pid-from-process-name proc-name)))
(run-hooks 'helm-open-file-externally-after-finish-hook)
(shell-command (format helm-raise-command "emacs")))
(message "%s process...Finished." process))))
;; Move command on top list.
(setq helm-external-commands-list
(cons proc-name
(delete proc-name helm-external-commands-list))))))
(defun helm-get-mailcap-for-file (filename)
"Get the command to use for FILENAME from mailcap files."
(mailcap-parse-mailcaps)
(let* ((ext (file-name-extension filename))
(mime (when ext (mailcap-extension-to-mime ext)))
(result (when mime (mailcap-mime-info mime))))
;; If elisp file have no associations in .mailcap
;; `mailcap-maybe-eval' is returned, in this case just return nil.
(when (stringp result) (helm-basename result))))
(defun helm-get-default-program-for-file (filename)
"Try to find a default program to open FILENAME.
Try first in `helm-external-programs-associations' and then in
mailcap file. If nothing found return nil."
(let* ((ext (file-name-extension filename))
(def-prog (assoc-default ext helm-external-programs-associations)))
(cond ((and def-prog (not (string= def-prog ""))) def-prog)
((and helm-default-external-file-browser (file-directory-p filename))
helm-default-external-file-browser)
(t (helm-get-mailcap-for-file filename)))))
(defun helm-open-file-externally (_file)
"Open FILE with an external program.
Try to guess which program to use with
`helm-get-default-program-for-file'.
If not found or a prefix arg is given query the user which tool
to use."
(let* ((files (helm-marked-candidates :with-wildcard t))
(fname (expand-file-name (car files)))
(collection (helm-external-commands-list-1 'sort))
(def-prog (helm-get-default-program-for-file fname))
(program (if (or helm-current-prefix-arg (not def-prog))
;; Prefix arg or no default program.
(prog1
(helm-comp-read
"Program: " collection
:must-match t
:name "Open file Externally"
:history 'helm-external-command-history)
;; Always prompt to set this program as default.
(setq def-prog nil))
;; No prefix arg or default program exists.
def-prog)))
(unless (or def-prog ; Association exists, no need to record it.
;; Don't try to record non--filenames associations (e.g urls).
(not (file-exists-p fname)))
(when
(y-or-n-p
(format
"Do you want to make `%s' the default program for this kind of files? "
program))
(helm-aif (assoc (file-name-extension fname)
helm-external-programs-associations)
(setq helm-external-programs-associations
(delete it helm-external-programs-associations)))
(push (cons (file-name-extension fname)
(helm-read-string
"Program (Add args maybe and confirm): " program))
helm-external-programs-associations)
(customize-save-variable 'helm-external-programs-associations
helm-external-programs-associations)))
(helm-run-or-raise program files)
(run-hooks 'helm-open-file-externally-after-hook)
(setq helm-external-command-history
(cl-loop for i in helm-external-command-history
when (executable-find i) collect i))))
(defun helm-run-external-command-action (candidate &optional detached)
(helm-run-or-raise candidate nil detached)
(setq helm-external-command-history
(cons candidate
(delete candidate
helm-external-command-history))))
(defclass helm-external-commands (helm-source-in-buffer)
((filtered-candidate-transformer
:initform (lambda (candidates _source)
(cl-loop for c in candidates
if (get-process c)
collect (propertize c 'face 'font-lock-type-face)
else collect c)))
(must-match :initform t)
(nomark :initform t)
(action :initform
(helm-make-actions
"Run program" 'helm-run-external-command-action
(lambda ()
(unless (memq system-type '(windows-nt ms-dos))
"Run program detached"))
(lambda (candidate)
(helm-run-external-command-action candidate 'detached))))))
;;;###autoload
(defun helm-run-external-command ()
"Preconfigured `helm' to run External PROGRAM asyncronously from Emacs.
If program is already running try to run `helm-raise-command' if
defined otherwise exit with error. You can set your own list of
commands with `helm-external-commands-list'."
(interactive)
(helm :sources `(,(helm-make-source "External Commands history" 'helm-external-commands
:data helm-external-command-history)
,(helm-make-source "External Commands" 'helm-external-commands
:data (helm-external-commands-list-1 'sort)))
:buffer "*helm externals commands*"
:prompt "RunProgram: ")
;; Remove from history no more valid executables.
(setq helm-external-command-history
(cl-loop for i in helm-external-command-history
when (executable-find i) collect i)))
(provide 'helm-external)
;;; helm-external.el ends here