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1 | ;;; ediff-vers.el --- version control interface to Ediff |
2 | ||
ddc90f39 | 3 | ;;; Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. |
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4 | |
5 | ;; Author: Michael Kifer <kifer@cs.sunysb.edu> | |
6 | ||
7 | ;; This file is part of GNU Emacs. | |
8 | ||
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 2, or (at your option) | |
12 | ;; any later version. | |
13 | ||
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. | |
18 | ||
19 | ;; You should have received a copy of the GNU General Public License | |
20 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
21 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | ;; Boston, MA 02111-1307, USA. | |
23 | ||
24 | ||
25 | ;;; Code: | |
bbe6126c MK |
26 | |
27 | ;; Compiler pacifier | |
28 | (defvar rcs-default-co-switches) | |
29 | (defvar sc-mode) | |
30 | (defvar cvs-shell) | |
31 | (defvar cvs-program) | |
32 | (defvar cvs-cookie-handle) | |
ddc90f39 | 33 | (defvar ediff-temp-file-prefix) |
bbe6126c | 34 | |
92c51e07 MK |
35 | (and noninteractive |
36 | (eval-when-compile | |
37 | (load "pcl-cvs" 'noerror) | |
38 | (load "rcs" 'noerror) | |
c3f2772b EZ |
39 | ;; On 8+3 MS-DOS filesystems, generic-x.el is loaded |
40 | ;; instead of (the missing) generic-sc.el. Since the | |
41 | ;; version of Emacs which supports MS-DOS doesn't have | |
42 | ;; generic-sc, we simply avoid loading it. | |
43 | (or (and (fboundp 'msdos-long-file-names) | |
44 | (not (msdos-long-file-names))) | |
45 | (load "generic-sc" 'noerror)) | |
92c51e07 | 46 | (load "vc" 'noerror))) |
bbe6126c | 47 | ;; end pacifier |
8122a6da MK |
48 | |
49 | ;; VC.el support | |
92c51e07 | 50 | (defun ediff-vc-internal (rev1 rev2 &optional startup-hooks) |
8122a6da MK |
51 | ;; Run Ediff on versions of the current buffer. |
52 | ;; If REV2 is "" then compare current buffer with REV1. | |
53 | ;; If the current buffer is named `F', the version is named `F.~REV~'. | |
54 | ;; If `F.~REV~' already exists, it is used instead of being re-created. | |
55 | (let (file1 file2 rev1buf rev2buf) | |
657f9cb8 MK |
56 | (save-window-excursion |
57 | (save-excursion | |
58 | (vc-version-other-window rev1) | |
59 | (setq rev1buf (current-buffer) | |
60 | file1 (buffer-file-name))) | |
61 | (save-excursion | |
62 | (or (string= rev2 "") ; use current buffer | |
63 | (vc-version-other-window rev2)) | |
64 | (setq rev2buf (current-buffer) | |
65 | file2 (buffer-file-name))) | |
66 | (setq startup-hooks | |
67 | (cons `(lambda () | |
68 | (delete-file ,file1) | |
69 | (or ,(string= rev2 "") (delete-file ,file2))) | |
70 | startup-hooks))) | |
8122a6da MK |
71 | (ediff-buffers |
72 | rev1buf rev2buf | |
73 | startup-hooks | |
74 | 'ediff-revision))) | |
75 | ||
76 | ;; RCS.el support | |
77 | (defun rcs-ediff-view-revision (&optional rev) | |
78 | ;; View previous RCS revision of current file. | |
79 | ;; With prefix argument, prompts for a revision name. | |
80 | (interactive (list (if current-prefix-arg | |
81 | (read-string "Revision: ")))) | |
82 | (let* ((filename (buffer-file-name (current-buffer))) | |
83 | (switches (append '("-p") | |
84 | (if rev (list (concat "-r" rev)) nil))) | |
85 | (buff (concat (file-name-nondirectory filename) ".~" rev "~"))) | |
86 | (message "Working ...") | |
87 | (setq filename (expand-file-name filename)) | |
88 | (with-output-to-temp-buffer buff | |
7de0717c DL |
89 | (ediff-with-current-buffer standard-output |
90 | (fundamental-mode)) | |
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91 | (let ((output-buffer (ediff-rcs-get-output-buffer filename buff))) |
92 | (delete-windows-on output-buffer) | |
93 | (save-excursion | |
94 | (set-buffer output-buffer) | |
95 | (apply 'call-process "co" nil t nil | |
96 | ;; -q: quiet (no diagnostics) | |
97 | (append switches rcs-default-co-switches | |
98 | (list "-q" filename))))) | |
99 | (message "") | |
100 | buff))) | |
101 | ||
102 | (defun ediff-rcs-get-output-buffer (file name) | |
103 | ;; Get a buffer for RCS output for FILE, make it writable and clean it up. | |
104 | ;; Optional NAME is name to use instead of `*RCS-output*'. | |
3af0304a | 105 | ;; This is a modified version from rcs.el v1.1. I use it here to make |
8122a6da MK |
106 | ;; Ediff immune to changes in rcs.el |
107 | (let* ((default-major-mode 'fundamental-mode) ; no frills! | |
108 | (buf (get-buffer-create name))) | |
109 | (save-excursion | |
110 | (set-buffer buf) | |
111 | (setq buffer-read-only nil | |
112 | default-directory (file-name-directory (expand-file-name file))) | |
113 | (erase-buffer)) | |
114 | buf)) | |
115 | ||
92c51e07 | 116 | (defun ediff-rcs-internal (rev1 rev2 &optional startup-hooks) |
8122a6da MK |
117 | ;; Run Ediff on versions of the current buffer. |
118 | ;; If REV2 is "" then use current buffer. | |
657f9cb8 MK |
119 | (let (rev2buf rev1buf) |
120 | (save-window-excursion | |
121 | (setq rev2buf (if (string= rev2 "") | |
122 | (current-buffer) | |
123 | (rcs-ediff-view-revision rev2)) | |
124 | rev1buf (rcs-ediff-view-revision rev1))) | |
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125 | |
126 | ;; rcs.el doesn't create temp version files, so we don't have to delete | |
127 | ;; anything in startup hooks to ediff-buffers | |
128 | (ediff-buffers rev1buf rev2buf startup-hooks 'ediff-revision) | |
129 | )) | |
130 | ||
131 | ||
132 | ;; GENERIC-SC.el support | |
133 | ||
134 | (defun generic-sc-get-latest-rev () | |
135 | (cond ((eq sc-mode 'CCASE) | |
136 | (eval "main/LATEST")) | |
137 | (t (eval "")))) | |
138 | ||
92c51e07 | 139 | (defun ediff-generic-sc-internal (rev1 rev2 &optional startup-hooks) |
8122a6da MK |
140 | ;; Run Ediff on versions of the current buffer. |
141 | ;; If REV2 is "" then compare current buffer with REV1. | |
142 | ;; If the current buffer is named `F', the version is named `F.~REV~'. | |
143 | ;; If `F.~REV~' already exists, it is used instead of being re-created. | |
144 | (let (rev1buf rev2buf) | |
145 | (save-excursion | |
146 | (if (or (not rev1) (string= rev1 "")) | |
147 | (setq rev1 (generic-sc-get-latest-rev))) | |
148 | (sc-visit-previous-revision rev1) | |
149 | (setq rev1buf (current-buffer))) | |
150 | (save-excursion | |
151 | (or (string= rev2 "") ; use current buffer | |
152 | (sc-visit-previous-revision rev2)) | |
153 | (setq rev2buf (current-buffer))) | |
154 | (ediff-buffers rev1buf rev2buf startup-hooks 'ediff-revision))) | |
155 | ||
156 | ||
157 | ;;; Merge with Version Control | |
158 | ||
328b4b70 MK |
159 | (defun ediff-vc-merge-internal (rev1 rev2 ancestor-rev |
160 | &optional startup-hooks merge-buffer-file) | |
8122a6da MK |
161 | ;; If ANCESTOR-REV non-nil, merge with ancestor |
162 | (let (buf1 buf2 ancestor-buf) | |
657f9cb8 MK |
163 | (save-window-excursion |
164 | (save-excursion | |
165 | (vc-version-other-window rev1) | |
166 | (setq buf1 (current-buffer))) | |
167 | (save-excursion | |
168 | (or (string= rev2 "") | |
169 | (vc-version-other-window rev2)) | |
170 | (setq buf2 (current-buffer))) | |
171 | (if ancestor-rev | |
172 | (save-excursion | |
173 | (if (string= ancestor-rev "") | |
174 | (setq ancestor-rev (vc-workfile-version buffer-file-name))) | |
175 | (vc-version-other-window ancestor-rev) | |
176 | (setq ancestor-buf (current-buffer)))) | |
177 | (setq startup-hooks | |
178 | (cons | |
179 | `(lambda () | |
180 | (delete-file ,(buffer-file-name buf1)) | |
181 | (or ,(string= rev2 "") | |
182 | (delete-file ,(buffer-file-name buf2))) | |
183 | (or ,(string= ancestor-rev "") | |
184 | ,(not ancestor-rev) | |
185 | (delete-file ,(buffer-file-name ancestor-buf))) | |
186 | ) | |
187 | startup-hooks))) | |
8122a6da MK |
188 | (if ancestor-rev |
189 | (ediff-merge-buffers-with-ancestor | |
190 | buf1 buf2 ancestor-buf | |
328b4b70 MK |
191 | startup-hooks 'ediff-merge-revisions-with-ancestor merge-buffer-file) |
192 | (ediff-merge-buffers | |
193 | buf1 buf2 startup-hooks 'ediff-merge-revisions merge-buffer-file)) | |
8122a6da MK |
194 | )) |
195 | ||
92c51e07 | 196 | (defun ediff-rcs-merge-internal (rev1 rev2 ancestor-rev |
328b4b70 MK |
197 | &optional |
198 | startup-hooks merge-buffer-file) | |
8122a6da MK |
199 | ;; If ANCESTOR-REV non-nil, merge with ancestor |
200 | (let (buf1 buf2 ancestor-buf) | |
657f9cb8 MK |
201 | (save-window-excursion |
202 | (setq buf1 (rcs-ediff-view-revision rev1) | |
203 | buf2 (if (string= rev2 "") | |
204 | (current-buffer) | |
205 | (rcs-ediff-view-revision rev2)) | |
206 | ancestor-buf (if ancestor-rev | |
207 | (if (string= ancestor-rev "") | |
208 | (current-buffer) | |
209 | (rcs-ediff-view-revision ancestor-rev))))) | |
8122a6da MK |
210 | ;; rcs.el doesn't create temp version files, so we don't have to delete |
211 | ;; anything in startup hooks to ediff-buffers | |
212 | (if ancestor-rev | |
213 | (ediff-merge-buffers-with-ancestor | |
214 | buf1 buf2 ancestor-buf | |
328b4b70 MK |
215 | startup-hooks 'ediff-merge-revisions-with-ancestor merge-buffer-file) |
216 | (ediff-merge-buffers | |
217 | buf1 buf2 startup-hooks 'ediff-merge-revisions merge-buffer-file)))) | |
8122a6da | 218 | |
92c51e07 | 219 | (defun ediff-generic-sc-merge-internal (rev1 rev2 ancestor-rev |
328b4b70 MK |
220 | &optional |
221 | startup-hooks merge-buffer-file) | |
8122a6da MK |
222 | ;; If ANCESTOR-REV non-nil, merge with ancestor |
223 | (let (buf1 buf2 ancestor-buf) | |
224 | (save-excursion | |
225 | (if (string= rev1 "") | |
226 | (setq rev1 (generic-sc-get-latest-rev))) | |
227 | (sc-visit-previous-revision rev1) | |
228 | (setq buf1 (current-buffer))) | |
229 | (save-excursion | |
230 | (or (string= rev2 "") | |
231 | (sc-visit-previous-revision rev2)) | |
232 | (setq buf2 (current-buffer))) | |
233 | (if ancestor-rev | |
234 | (save-excursion | |
235 | (or (string= ancestor-rev "") | |
236 | (sc-visit-previous-revision ancestor-rev)) | |
237 | (setq ancestor-buf (current-buffer)))) | |
238 | (if ancestor-rev | |
239 | (ediff-merge-buffers-with-ancestor | |
240 | buf1 buf2 ancestor-buf | |
328b4b70 MK |
241 | startup-hooks 'ediff-merge-revisions-with-ancestor merge-buffer-file) |
242 | (ediff-merge-buffers | |
243 | buf1 buf2 startup-hooks 'ediff-merge-revisions merge-buffer-file)))) | |
8122a6da MK |
244 | |
245 | ||
246 | ;; PCL-CVS.el support | |
247 | ||
8122a6da MK |
248 | |
249 | (defun cvs-run-ediff-on-file-descriptor (tin) | |
250 | ;; This is a replacement for cvs-emerge-mode | |
328b4b70 | 251 | ;; Runs after cvs-update. |
8122a6da MK |
252 | ;; Ediff-merge appropriate revisions of the selected file. |
253 | (let* ((fileinfo (tin-cookie cvs-cookie-handle tin)) | |
254 | (type (cvs-fileinfo->type fileinfo)) | |
255 | (tmp-file | |
256 | (cvs-retrieve-revision-to-tmpfile fileinfo)) | |
c004db97 | 257 | (default-directory |
2eb4bdca | 258 | (file-name-as-directory (cvs-fileinfo->dir fileinfo))) |
8122a6da MK |
259 | ancestor-file) |
260 | ||
261 | (or (memq type '(MERGED CONFLICT MODIFIED)) | |
262 | (error | |
263 | "Can only merge `Modified', `Merged' or `Conflict' files")) | |
264 | ||
265 | (cond ((memq type '(MERGED CONFLICT)) | |
266 | (setq ancestor-file | |
267 | (cvs-retrieve-revision-to-tmpfile | |
268 | fileinfo | |
269 | ;; revision | |
270 | (cvs-fileinfo->base-revision fileinfo))) | |
271 | (ediff-merge-buffers-with-ancestor | |
272 | (find-file-noselect tmp-file) | |
273 | (find-file-noselect (cvs-fileinfo->backup-file fileinfo)) | |
274 | (find-file-noselect ancestor-file) | |
275 | nil ; startup-hooks | |
276 | 'ediff-merge-revisions-with-ancestor)) | |
277 | ((eq type 'MODIFIED) | |
c004db97 | 278 | (ediff-buffers |
8122a6da MK |
279 | (find-file-noselect tmp-file) |
280 | (find-file-noselect (cvs-fileinfo->full-path fileinfo)) | |
281 | nil ; startup-hooks | |
c004db97 | 282 | 'ediff-revisions))) |
8122a6da MK |
283 | (if (stringp tmp-file) (delete-file tmp-file)) |
284 | (if (stringp ancestor-file) (delete-file ancestor-file)))) | |
285 | ||
286 | ;;; Local Variables: | |
287 | ;;; eval: (put 'ediff-defvar-local 'lisp-indent-hook 'defun) | |
e756eb9f MK |
288 | ;;; eval: (put 'ediff-with-current-buffer 'lisp-indent-hook 1) |
289 | ;;; eval: (put 'ediff-with-current-buffer 'edebug-form-spec '(form body)) | |
8122a6da MK |
290 | ;;; End: |
291 | ||
292 | (provide 'ediff-vers) | |
293 | ||
294 | ;;; ediff-vers.el ends here |