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
|
;;; ediff-vers.el --- version control interface to Ediff -*- lexical-binding:t -*-
;; Copyright (C) 1995-1997, 2001-2025 Free Software Foundation, Inc.
;; Author: Michael Kifer <kifer@cs.stonybrook.edu>
;; Package: ediff
;; 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:
;;; Code:
(eval-when-compile (require 'ediff-init))
(defvar rcs-default-co-switches)
(defcustom ediff-keep-tmp-versions nil
"If t, do not delete temporary previous versions for the files on which
comparison or merge operations are being performed."
:type 'boolean
:group 'ediff-vers
)
(define-obsolete-function-alias 'ediff-vc-revision-other-window
#'vc-revision-other-window "28.1")
(define-obsolete-function-alias 'ediff-vc-working-revision
#'vc-working-revision "28.1")
;; VC.el support
(eval-when-compile
(require 'vc-hooks)) ;; for vc-call macro
(defun ediff-vc-latest-version (file)
"Return the version level of the latest version of FILE in repository."
(if (fboundp 'vc-latest-version)
(vc-latest-version file)
(or (vc-file-getprop file 'vc-latest-revision)
(cond ((vc-backend file)
(vc-call state file)
(vc-file-getprop file 'vc-latest-revision))
(t (error "File %s is not under version control" file))))
))
(defun ediff-vc-internal (rev1 rev2 &optional startup-hooks)
;; Run Ediff on versions of the current buffer.
;; If REV1 is "", use the latest version of the current buffer's file.
;; If REV2 is "" then compare current buffer with REV1.
;; If the current buffer is named `F', the version is named `F.~REV~'.
;; If `F.~REV~' already exists, it is used instead of being re-created.
(let (file1 file2 rev1buf rev2buf)
(if (string= rev1 "")
(setq rev1 (ediff-vc-latest-version (buffer-file-name))))
(save-window-excursion
(save-excursion
(vc-revision-other-window rev1)
(setq rev1buf (current-buffer)
file1 (buffer-file-name)))
(save-excursion
(or (string= rev2 "") ; use current buffer
(vc-revision-other-window rev2))
(setq rev2buf (current-buffer)
file2 (buffer-file-name)))
(push (lambda ()
(ediff-delete-version-file file1)
(or (string= rev2 "") (ediff-delete-version-file file2)))
startup-hooks))
(ediff-buffers
rev1buf rev2buf
startup-hooks
'ediff-revision)))
;; RCS.el support
(defun rcs-ediff-view-revision (&optional rev)
"View previous RCS revision of current file.
With prefix argument, prompts for a revision name."
(interactive (list (if current-prefix-arg
(read-string "Revision: "))))
(let* ((filename (buffer-file-name (current-buffer)))
(switches (append '("-p")
(if rev (list (concat "-r" rev)) nil)))
(buff (concat (file-name-nondirectory filename) ".~" rev "~")))
(message "Working ...")
(setq filename (expand-file-name filename))
(with-output-to-temp-buffer buff
(ediff-with-current-buffer standard-output
(fundamental-mode))
(let ((output-buffer (ediff-rcs-get-output-buffer filename buff)))
(delete-windows-on output-buffer)
(with-current-buffer output-buffer
(apply #'call-process "co" nil t nil
;; -q: quiet (no diagnostics)
(append switches rcs-default-co-switches
(list "-q" filename)))))
(message "")
buff)))
(defun ediff-rcs-get-output-buffer (file name)
;; Get a buffer for RCS output for FILE, make it writable and clean it up.
;; Optional NAME is name to use instead of `*RCS-output*'.
;; This is a modified version from rcs.el v1.1. I use it here to make
;; Ediff immune to changes in rcs.el
(let ((buf (get-buffer-create name)))
(with-current-buffer buf
(setq buffer-read-only nil
default-directory (file-name-directory (expand-file-name file)))
(erase-buffer))
buf))
(defun ediff-rcs-internal (rev1 rev2 &optional startup-hooks)
;; Run Ediff on versions of the current buffer.
;; If REV2 is "" then use current buffer.
(let (rev2buf rev1buf)
(save-window-excursion
(setq rev2buf (if (string= rev2 "")
(current-buffer)
(rcs-ediff-view-revision rev2))
rev1buf (rcs-ediff-view-revision rev1)))
;; rcs.el doesn't create temp version files, so we don't have to delete
;; anything in startup hooks to ediff-buffers
(ediff-buffers rev1buf rev2buf startup-hooks 'ediff-revision)
))
;;; Merge with Version Control
(defun ediff-vc-merge-internal (rev1 rev2 ancestor-rev
&optional startup-hooks merge-buffer-file)
;; If ANCESTOR-REV non-nil, merge with ancestor
(let (buf1 buf2 ancestor-buf)
(save-window-excursion
(save-excursion
(vc-revision-other-window rev1)
(setq buf1 (current-buffer)))
(save-excursion
(or (string= rev2 "")
(vc-revision-other-window rev2))
(setq buf2 (current-buffer)))
(if ancestor-rev
(save-excursion
(if (string= ancestor-rev "")
(setq ancestor-rev (vc-working-revision
buffer-file-name)))
(vc-revision-other-window ancestor-rev)
(setq ancestor-buf (current-buffer))))
(push (let ((f1 (buffer-file-name buf1))
(f2 (unless (string= rev2 "") (buffer-file-name buf2)))
(fa (unless (or (string= ancestor-rev "")
(not ancestor-rev))
(buffer-file-name ancestor-buf))))
(lambda ()
(ediff-delete-version-file f1)
(if f2 (ediff-delete-version-file f2))
(if fa (ediff-delete-version-file fa))))
startup-hooks))
(if ancestor-rev
(ediff-merge-buffers-with-ancestor
buf1 buf2 ancestor-buf
startup-hooks 'ediff-merge-revisions-with-ancestor merge-buffer-file)
(ediff-merge-buffers
buf1 buf2 startup-hooks 'ediff-merge-revisions merge-buffer-file))
))
(defun ediff-rcs-merge-internal (rev1 rev2 ancestor-rev
&optional
startup-hooks merge-buffer-file)
;; If ANCESTOR-REV non-nil, merge with ancestor
(let (buf1 buf2 ancestor-buf)
(save-window-excursion
(setq buf1 (rcs-ediff-view-revision rev1)
buf2 (if (string= rev2 "")
(current-buffer)
(rcs-ediff-view-revision rev2))
ancestor-buf (if ancestor-rev
(if (string= ancestor-rev "")
(current-buffer)
(rcs-ediff-view-revision ancestor-rev)))))
;; rcs.el doesn't create temp version files, so we don't have to delete
;; anything in startup hooks to ediff-buffers
(if ancestor-rev
(ediff-merge-buffers-with-ancestor
buf1 buf2 ancestor-buf
startup-hooks 'ediff-merge-revisions-with-ancestor merge-buffer-file)
(ediff-merge-buffers
buf1 buf2 startup-hooks 'ediff-merge-revisions merge-buffer-file))))
;; delete version file on exit unless ediff-keep-tmp-versions is true
(defun ediff-delete-version-file (file)
(or ediff-keep-tmp-versions (delete-file file)))
(provide 'ediff-vers)
;;; ediff-vers.el ends here
|
