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
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
|
;;; vc-src.el --- support for SRC version-control -*- lexical-binding:t -*-
;; Copyright (C) 1992-2021 Free Software Foundation, Inc.
;; Author: FSF (see vc.el for full credits)
;; Maintainer: emacs-devel@gnu.org
;; Package: vc
;; 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 <https://www.gnu.org/licenses/>.
;;; Commentary:
;; See vc.el. SRC requires an underlying RCS version of 4.0 or greater.
;; FUNCTION NAME STATUS
;; BACKEND PROPERTIES
;; * revision-granularity OK
;; STATE-QUERYING FUNCTIONS
;; * registered (file) OK
;; * state (file) OK
;; - dir-status-files (dir files uf) OK
;; - dir-extra-headers (dir) NOT NEEDED
;; - dir-printer (fileinfo) ??
;; * working-revision (file) OK
;; * checkout-model (files) OK
;; - mode-line-string (file) NOT NEEDED
;; STATE-CHANGING FUNCTIONS
;; * register (files &optional rev comment) OK
;; * create-repo () OK
;; * responsible-p (file) OK
;; - receive-file (file rev) NOT NEEDED
;; - unregister (file) NOT NEEDED
;; * checkin (files comment) OK
;; * find-revision (file rev buffer) OK
;; * checkout (file &optional rev) OK
;; * revert (file &optional contents-done) OK
;; - merge (file rev1 rev2) NOT NEEDED
;; - merge-news (file) NOT NEEDED
;; - steal-lock (file &optional revision) NOT NEEDED
;; HISTORY FUNCTIONS
;; * print-log (files buffer &optional shortlog start-revision limit) OK
;; - log-view-mode () ??
;; - show-log-entry (revision) NOT NEEDED
;; - comment-history (file) NOT NEEDED
;; - update-changelog (files) NOT NEEDED
;; * diff (files &optional rev1 rev2 buffer) OK
;; - revision-completion-table (files) ??
;; - annotate-command (file buf &optional rev) ??
;; - annotate-time () ??
;; - annotate-current-time () NOT NEEDED
;; - annotate-extract-revision-at-line () ??
;; TAG SYSTEM
;; - create-tag (dir name branchp) ??
;; - retrieve-tag (dir name update) ??
;; MISCELLANEOUS
;; - make-version-backups-p (file) ??
;; - previous-revision (file rev) ??
;; - next-revision (file rev) ??
;; - check-headers () ??
;; - delete-file (file) ??
;; * rename-file (old new) OK
;; - find-file-hook () NOT NEEDED
;;; Code:
;;;
;;; Customization options
;;;
(eval-when-compile
(require 'cl-lib)
(require 'vc))
(declare-function vc-setup-buffer "vc-dispatcher" (buf))
(defgroup vc-src nil
"VC SRC backend."
:version "25.1"
:group 'vc)
(defcustom vc-src-release nil
"The release number of your SRC installation, as a string.
If nil, VC itself computes this value when it is first needed."
:type '(choice (const :tag "Auto" nil)
(string :tag "Specified")
(const :tag "Unknown" unknown))
:group 'vc-src)
(defcustom vc-src-program "src"
"Name of the SRC executable (excluding any arguments)."
:type 'string
:group 'vc-src)
(defcustom vc-src-diff-switches nil
"String or list of strings specifying switches for SRC diff under VC.
If nil, use the value of `vc-diff-switches'. If t, use no switches."
:type '(choice (const :tag "Unspecified" nil)
(const :tag "None" t)
(string :tag "Argument String")
(repeat :tag "Argument List" :value ("") string))
:group 'vc-src)
;; This needs to be autoloaded because vc-src-registered uses it (via
;; vc-default-registered), and vc-hooks needs to be able to check
;; for a registered backend without loading every backend.
;;;###autoload
(defcustom vc-src-master-templates
(purecopy '("%s.src/%s,v"))
"Where to look for SRC master files.
For a description of possible values, see `vc-check-master-templates'."
:type '(choice (const :tag "Use standard SRC file names"
'("%s.src/%s,v"))
(repeat :tag "User-specified"
(choice string
function)))
:group 'vc-src)
;;; Properties of the backend
(defun vc-src-revision-granularity () 'file)
(defun vc-src-checkout-model (_files) 'implicit)
;;;
;;; State-querying functions
;;;
;; The autoload cookie below places vc-src-registered directly into
;; loaddefs.el, so that vc-src.el does not need to be loaded for
;; every file that is visited.
;;;###autoload
(progn
(defun vc-src-registered (f) (vc-default-registered 'src f)))
(defun vc-src--parse-state (out)
(when (null (string-match "does not exist or is unreadable" out))
(let ((state (aref out 0)))
(cond
;; FIXME: What to do about L code?
((eq state ?.) 'up-to-date)
((eq state ?A) 'added)
((eq state ?M) 'edited)
((eq state ?I) 'ignored)
((eq state ?R) 'removed)
((eq state ?!) 'missing)
((eq state ??) 'unregistered)
(t 'up-to-date)))))
(defun vc-src-state (file)
"SRC-specific version of `vc-state'."
(let*
((status nil)
(default-directory (file-name-directory file))
(out
(with-output-to-string
(with-current-buffer
standard-output
(setq status
;; Ignore all errors.
(condition-case nil
(process-file
vc-src-program nil t nil
"status" "-a" (file-relative-name file))
(error nil)))))))
(when (eq 0 status)
(vc-src--parse-state out))))
(autoload 'vc-expand-dirs "vc")
(defun vc-src-dir-status-files (dir files update-function)
(let* ((result nil)
(status nil)
(default-directory (or dir default-directory))
(out
(with-output-to-string
(with-current-buffer standard-output
(setq status
(ignore-errors
(apply
#'process-file vc-src-program nil t nil
"status" "-a"
(mapcar #'file-relative-name files)))))))
dlist)
(when (eq 0 status)
(dolist (line (split-string out "[\n\r]" t))
(let* ((pair (split-string line "[\t]" t))
(state (vc-src--parse-state (car pair)))
(frel (cadr pair)))
(if (file-directory-p frel)
(push frel dlist)
(when (not (eq state 'up-to-date))
(push (list frel state) result)))))
(dolist (drel dlist)
(let ((dresult (vc-src-dir-status-files
(expand-file-name drel) nil #'identity)))
(dolist (dres dresult)
(push (list (concat (file-name-as-directory drel) (car dres))
(cadr dres))
result))))
(funcall update-function result))))
(defun vc-src-command (buffer file-or-list &rest flags)
"A wrapper around `vc-do-command' for use in vc-src.el.
This function differs from vc-do-command in that it invokes `vc-src-program'."
(let (file-list)
(cond ((stringp file-or-list)
(setq file-list (list "--" file-or-list)))
(file-or-list
(setq file-list (cons "--" file-or-list))))
(apply 'vc-do-command (or buffer "*vc*") 0 vc-src-program file-list flags)))
(defun vc-src-working-revision (file)
"SRC-specific version of `vc-working-revision'."
(let ((result (ignore-errors
(with-output-to-string
(vc-src-command standard-output file "list" "-f{1}" "@")))))
(if (zerop (length result)) "0" result)))
;;;
;;; State-changing functions
;;;
(defun vc-src-create-repo ()
"Create a new SRC repository."
;; SRC is totally file-oriented, so all we have to do is make the directory.
(make-directory ".src"))
(autoload 'vc-switches "vc")
(defun vc-src-register (files &optional _comment)
"Register FILES under src. COMMENT is ignored."
(vc-src-command nil files "add"))
(defun vc-src-responsible-p (file)
"Return non-nil if SRC thinks it would be responsible for registering FILE."
(file-directory-p (expand-file-name ".src"
(if (file-directory-p file)
file
(file-name-directory file)))))
(defun vc-src-checkin (files comment &optional _rev)
"SRC-specific version of `vc-backend-checkin'.
REV is ignored."
(vc-src-command nil files "commit" "-m" comment))
(defun vc-src-find-revision (file rev buffer)
(let ((coding-system-for-read 'binary)
(coding-system-for-write 'binary))
(if rev
(vc-src-command buffer file "cat" rev)
(vc-src-command buffer file "cat"))))
(defun vc-src-checkout (file &optional rev)
"Retrieve a revision of FILE.
REV is the revision to check out into WORKFILE."
(if rev
(vc-src-command nil file "co" rev)
(vc-src-command nil file "co")))
(defun vc-src-revert (file &optional _contents-done)
"Revert FILE to the version it was based on. If FILE is a directory,
revert all registered files beneath it."
(if (file-directory-p file)
(mapc 'vc-src-revert (vc-expand-dirs (list file) 'SRC))
(vc-src-command nil file "co")))
(defun vc-src-modify-change-comment (files rev comment)
"Modify the change comments change on FILES on a specified REV. If FILE is a
directory the operation is applied to all registered files beneath it."
(dolist (file (vc-expand-dirs files 'SRC))
(vc-src-command nil file "amend" "-m" comment rev)))
;; History functions
(defcustom vc-src-log-switches nil
"String or list of strings specifying switches for src log under VC."
:type '(choice (const :tag "None" nil)
(string :tag "Argument String")
(repeat :tag "Argument List" :value ("") string))
:group 'vc-src)
(defun vc-src-print-log (files buffer &optional shortlog _start-revision limit)
"Print commit log associated with FILES into specified BUFFER.
If SHORTLOG is non-nil, use the list method.
If START-REVISION is non-nil, it is the newest revision to show.
If LIMIT is non-nil, show no more than this many entries."
;; FIXME: Implement the range restrictions.
;; `vc-do-command' creates the buffer, but we need it before running
;; the command.
(vc-setup-buffer buffer)
;; If the buffer exists from a previous invocation it might be
;; read-only.
(let ((inhibit-read-only t))
(with-current-buffer
buffer
(apply 'vc-src-command buffer files (if shortlog "list" "log")
(nconc
;;(when start-revision (list (format "%s-1" start-revision)))
(when limit (list "-l" (format "%s" limit)))
vc-src-log-switches)))))
(defun vc-src-diff (files &optional oldvers newvers buffer _async)
"Get a difference report using src between two revisions of FILES."
(let* ((firstfile (car files))
(working (and firstfile (vc-working-revision firstfile))))
(when (and (equal oldvers working) (not newvers))
(setq oldvers nil))
(when (and (not oldvers) newvers)
(setq oldvers working))
(apply #'vc-src-command (or buffer "*vc-diff*") files "diff"
(when oldvers
(if newvers
(list (concat oldvers "-" newvers))
(list oldvers))))))
;; Miscellaneous
(defun vc-src-rename-file (old new)
"Rename file from OLD to NEW using `src mv'."
(vc-src-command nil 0 new "mv" old))
(provide 'vc-src)
;;; vc-src.el ends here
|
