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8122a6da MK |
1 | ;;; ediff-vers.el --- version control interface to Ediff |
2 | ||
ddc90f39 | 3 | ;;; Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. |
8122a6da MK |
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) | |
39 | (load "generic-sc" 'noerror) | |
40 | (load "vc" 'noerror))) | |
bbe6126c | 41 | ;; end pacifier |
8122a6da MK |
42 | |
43 | ;; VC.el support | |
92c51e07 | 44 | (defun ediff-vc-internal (rev1 rev2 &optional startup-hooks) |
8122a6da MK |
45 | ;; Run Ediff on versions of the current buffer. |
46 | ;; If REV2 is "" then compare current buffer with REV1. | |
47 | ;; If the current buffer is named `F', the version is named `F.~REV~'. | |
48 | ;; If `F.~REV~' already exists, it is used instead of being re-created. | |
49 | (let (file1 file2 rev1buf rev2buf) | |
50 | (save-excursion | |
51 | (vc-version-other-window rev1) | |
52 | (setq rev1buf (current-buffer) | |
53 | file1 (buffer-file-name))) | |
54 | (save-excursion | |
55 | (or (string= rev2 "") ; use current buffer | |
56 | (vc-version-other-window rev2)) | |
57 | (setq rev2buf (current-buffer) | |
58 | file2 (buffer-file-name))) | |
59 | (setq startup-hooks | |
60 | (cons (` (lambda () | |
61 | (delete-file (, file1)) | |
62 | (or (, (string= rev2 "")) (delete-file (, file2))) | |
63 | )) | |
64 | startup-hooks)) | |
65 | (ediff-buffers | |
66 | rev1buf rev2buf | |
67 | startup-hooks | |
68 | 'ediff-revision))) | |
69 | ||
70 | ;; RCS.el support | |
71 | (defun rcs-ediff-view-revision (&optional rev) | |
72 | ;; View previous RCS revision of current file. | |
73 | ;; With prefix argument, prompts for a revision name. | |
74 | (interactive (list (if current-prefix-arg | |
75 | (read-string "Revision: ")))) | |
76 | (let* ((filename (buffer-file-name (current-buffer))) | |
77 | (switches (append '("-p") | |
78 | (if rev (list (concat "-r" rev)) nil))) | |
79 | (buff (concat (file-name-nondirectory filename) ".~" rev "~"))) | |
80 | (message "Working ...") | |
81 | (setq filename (expand-file-name filename)) | |
82 | (with-output-to-temp-buffer buff | |
83 | (let ((output-buffer (ediff-rcs-get-output-buffer filename buff))) | |
84 | (delete-windows-on output-buffer) | |
85 | (save-excursion | |
86 | (set-buffer output-buffer) | |
87 | (apply 'call-process "co" nil t nil | |
88 | ;; -q: quiet (no diagnostics) | |
89 | (append switches rcs-default-co-switches | |
90 | (list "-q" filename))))) | |
91 | (message "") | |
92 | buff))) | |
93 | ||
94 | (defun ediff-rcs-get-output-buffer (file name) | |
95 | ;; Get a buffer for RCS output for FILE, make it writable and clean it up. | |
96 | ;; Optional NAME is name to use instead of `*RCS-output*'. | |
97 | ;; This is a modified version from rcs.el v1.1. I use it here to make | |
98 | ;; Ediff immune to changes in rcs.el | |
99 | (let* ((default-major-mode 'fundamental-mode) ; no frills! | |
100 | (buf (get-buffer-create name))) | |
101 | (save-excursion | |
102 | (set-buffer buf) | |
103 | (setq buffer-read-only nil | |
104 | default-directory (file-name-directory (expand-file-name file))) | |
105 | (erase-buffer)) | |
106 | buf)) | |
107 | ||
92c51e07 | 108 | (defun ediff-rcs-internal (rev1 rev2 &optional startup-hooks) |
8122a6da MK |
109 | ;; Run Ediff on versions of the current buffer. |
110 | ;; If REV2 is "" then use current buffer. | |
111 | (let ((rev2buf (if (string= rev2 "") | |
112 | (current-buffer) | |
113 | (rcs-ediff-view-revision rev2))) | |
114 | (rev1buf (rcs-ediff-view-revision rev1))) | |
115 | ||
116 | ;; rcs.el doesn't create temp version files, so we don't have to delete | |
117 | ;; anything in startup hooks to ediff-buffers | |
118 | (ediff-buffers rev1buf rev2buf startup-hooks 'ediff-revision) | |
119 | )) | |
120 | ||
121 | ||
122 | ;; GENERIC-SC.el support | |
123 | ||
124 | (defun generic-sc-get-latest-rev () | |
125 | (cond ((eq sc-mode 'CCASE) | |
126 | (eval "main/LATEST")) | |
127 | (t (eval "")))) | |
128 | ||
92c51e07 | 129 | (defun ediff-generic-sc-internal (rev1 rev2 &optional startup-hooks) |
8122a6da MK |
130 | ;; Run Ediff on versions of the current buffer. |
131 | ;; If REV2 is "" then compare current buffer with REV1. | |
132 | ;; If the current buffer is named `F', the version is named `F.~REV~'. | |
133 | ;; If `F.~REV~' already exists, it is used instead of being re-created. | |
134 | (let (rev1buf rev2buf) | |
135 | (save-excursion | |
136 | (if (or (not rev1) (string= rev1 "")) | |
137 | (setq rev1 (generic-sc-get-latest-rev))) | |
138 | (sc-visit-previous-revision rev1) | |
139 | (setq rev1buf (current-buffer))) | |
140 | (save-excursion | |
141 | (or (string= rev2 "") ; use current buffer | |
142 | (sc-visit-previous-revision rev2)) | |
143 | (setq rev2buf (current-buffer))) | |
144 | (ediff-buffers rev1buf rev2buf startup-hooks 'ediff-revision))) | |
145 | ||
146 | ||
147 | ;;; Merge with Version Control | |
148 | ||
92c51e07 | 149 | (defun ediff-vc-merge-internal (rev1 rev2 ancestor-rev &optional startup-hooks) |
8122a6da MK |
150 | ;; If ANCESTOR-REV non-nil, merge with ancestor |
151 | (let (buf1 buf2 ancestor-buf) | |
152 | (save-excursion | |
153 | (vc-version-other-window rev1) | |
154 | (setq buf1 (current-buffer))) | |
155 | (save-excursion | |
156 | (or (string= rev2 "") | |
157 | (vc-version-other-window rev2)) | |
158 | (setq buf2 (current-buffer))) | |
159 | (if ancestor-rev | |
160 | (save-excursion | |
161 | (or (string= ancestor-rev "") | |
162 | (vc-version-other-window ancestor-rev)) | |
163 | (setq ancestor-buf (current-buffer)))) | |
164 | (setq startup-hooks | |
165 | (cons | |
166 | (` (lambda () | |
167 | (delete-file (, (buffer-file-name buf1))) | |
168 | (or (, (string= rev2 "")) | |
169 | (delete-file (, (buffer-file-name buf2)))) | |
170 | (or (, (string= ancestor-rev "")) | |
171 | (, (not ancestor-rev)) | |
172 | (delete-file (, (buffer-file-name ancestor-buf)))) | |
173 | )) | |
174 | startup-hooks)) | |
175 | (if ancestor-rev | |
176 | (ediff-merge-buffers-with-ancestor | |
177 | buf1 buf2 ancestor-buf | |
178 | startup-hooks 'ediff-merge-revisions-with-ancestor) | |
179 | (ediff-merge-buffers buf1 buf2 startup-hooks 'ediff-merge-revisions)) | |
180 | )) | |
181 | ||
92c51e07 | 182 | (defun ediff-rcs-merge-internal (rev1 rev2 ancestor-rev |
8122a6da MK |
183 | &optional startup-hooks) |
184 | ;; If ANCESTOR-REV non-nil, merge with ancestor | |
185 | (let (buf1 buf2 ancestor-buf) | |
186 | (setq buf1 (rcs-ediff-view-revision rev1) | |
187 | buf2 (if (string= rev2 "") | |
188 | (current-buffer) | |
189 | (rcs-ediff-view-revision rev2)) | |
190 | ancestor-buf (if ancestor-rev | |
191 | (if (string= ancestor-rev "") | |
192 | (current-buffer) | |
193 | (rcs-ediff-view-revision ancestor-rev)))) | |
194 | ;; rcs.el doesn't create temp version files, so we don't have to delete | |
195 | ;; anything in startup hooks to ediff-buffers | |
196 | (if ancestor-rev | |
197 | (ediff-merge-buffers-with-ancestor | |
198 | buf1 buf2 ancestor-buf | |
199 | startup-hooks 'ediff-merge-revisions-with-ancestor) | |
200 | (ediff-merge-buffers buf1 buf2 startup-hooks 'ediff-merge-revisions)))) | |
201 | ||
92c51e07 | 202 | (defun ediff-generic-sc-merge-internal (rev1 rev2 ancestor-rev |
8122a6da MK |
203 | &optional startup-hooks) |
204 | ;; If ANCESTOR-REV non-nil, merge with ancestor | |
205 | (let (buf1 buf2 ancestor-buf) | |
206 | (save-excursion | |
207 | (if (string= rev1 "") | |
208 | (setq rev1 (generic-sc-get-latest-rev))) | |
209 | (sc-visit-previous-revision rev1) | |
210 | (setq buf1 (current-buffer))) | |
211 | (save-excursion | |
212 | (or (string= rev2 "") | |
213 | (sc-visit-previous-revision rev2)) | |
214 | (setq buf2 (current-buffer))) | |
215 | (if ancestor-rev | |
216 | (save-excursion | |
217 | (or (string= ancestor-rev "") | |
218 | (sc-visit-previous-revision ancestor-rev)) | |
219 | (setq ancestor-buf (current-buffer)))) | |
220 | (if ancestor-rev | |
221 | (ediff-merge-buffers-with-ancestor | |
222 | buf1 buf2 ancestor-buf | |
223 | startup-hooks 'ediff-merge-revisions-with-ancestor) | |
224 | (ediff-merge-buffers buf1 buf2 startup-hooks 'ediff-merge-revisions)))) | |
225 | ||
226 | ||
227 | ;; PCL-CVS.el support | |
228 | ||
92c51e07 | 229 | (defun ediff-pcl-cvs-internal (rev1 rev2 &optional startup-hooks) |
8122a6da MK |
230 | ;; Run Ediff on a pair of revisions of the current buffer. |
231 | ;; If REV1 is "", use the latest revision. | |
232 | ;; If REV2 is "", use the current buffer as the second file to compare. | |
233 | (let ((orig-buf (current-buffer)) | |
234 | orig-file-name buf1 buf2 file1 file2) | |
235 | ||
236 | (or (setq orig-file-name (buffer-file-name (current-buffer))) | |
237 | (error "Current buffer is not visiting any file")) | |
238 | (if (string= rev1 "") (setq rev1 nil)) ; latest revision | |
239 | (setq buf1 (ediff-pcl-cvs-view-revision orig-file-name rev1) | |
240 | buf2 (if (string= rev2 "") | |
241 | orig-buf | |
242 | (ediff-pcl-cvs-view-revision orig-file-name rev2)) | |
243 | file1 (buffer-file-name buf1) | |
244 | file2 (buffer-file-name buf2)) | |
245 | (setq startup-hooks | |
246 | (cons (` (lambda () | |
247 | (delete-file (, file1)) | |
248 | (or (, (string= rev2 "")) (delete-file (, file2))) | |
249 | )) | |
250 | startup-hooks)) | |
251 | (ediff-buffers buf1 buf2 startup-hooks 'ediff-revision))) | |
252 | ||
253 | ;; This function is the standard Ediff's interface to pcl-cvs. | |
254 | ;; Works like with other interfaces: runs ediff on versions of the file in the | |
255 | ;; current buffer. | |
92c51e07 | 256 | (defun ediff-pcl-cvs-merge-internal (rev1 rev2 ancestor-rev |
8122a6da MK |
257 | &optional startup-hooks) |
258 | ;; Ediff-merge appropriate revisions of the selected file. | |
259 | ;; If REV1 is "" then use the latest revision. | |
260 | ;; If REV2 is "" then merge current buffer's file with REV1. | |
261 | ;; If ANCESTOR-REV is "" then use current buffer's file as ancestor. | |
262 | ;; If ANCESTOR-REV is nil, then merge without the ancestor. | |
263 | (let ((orig-buf (current-buffer)) | |
264 | orig-file-name buf1 buf2 ancestor-buf) | |
265 | ||
266 | (or (setq orig-file-name (buffer-file-name (current-buffer))) | |
267 | (error "Current buffer is not visiting any file")) | |
268 | (if (string= rev1 "") (setq rev1 nil)) ; latest revision | |
269 | ||
270 | (setq buf1 (ediff-pcl-cvs-view-revision orig-file-name rev1)) | |
271 | (setq buf2 (if (string= rev2 "") | |
272 | orig-buf | |
273 | (ediff-pcl-cvs-view-revision orig-file-name rev2))) | |
274 | (if (stringp ancestor-rev) | |
275 | (setq ancestor-buf | |
276 | (if (string= ancestor-rev "") | |
277 | orig-buf | |
278 | (ediff-pcl-cvs-view-revision orig-file-name ancestor-rev)))) | |
279 | ||
280 | (setq startup-hooks | |
281 | (cons | |
282 | (` (lambda () | |
283 | (delete-file (, (buffer-file-name buf1))) | |
284 | (or (, (string= rev2 "")) | |
285 | (delete-file (, (buffer-file-name buf2)))) | |
286 | (or (, (string= ancestor-rev "")) | |
287 | (, (not ancestor-rev)) | |
288 | (delete-file (, (buffer-file-name ancestor-buf)))) | |
289 | )) | |
290 | startup-hooks)) | |
291 | ||
292 | (if ancestor-buf | |
293 | (ediff-merge-buffers-with-ancestor | |
294 | buf1 buf2 ancestor-buf startup-hooks | |
295 | 'ediff-merge-revisions-with-ancestor) | |
296 | (ediff-merge-buffers | |
297 | buf1 buf2 startup-hooks 'ediff-merge-revisions)) | |
298 | )) | |
299 | ||
300 | (defun ediff-pcl-cvs-view-revision (file rev) | |
301 | ;; if rev = "", get the latest revision | |
302 | (let ((temp-name (make-temp-name | |
303 | (concat ediff-temp-file-prefix | |
304 | "ediff_" rev)))) | |
305 | (cvs-kill-buffer-visiting temp-name) | |
306 | (if rev | |
307 | (message "Retrieving revision %s..." rev) | |
308 | (message "Retrieving latest revision...")) | |
309 | (let ((res (call-process cvs-shell nil nil nil "-c" | |
310 | (concat cvs-program " update -p " | |
311 | (if rev | |
312 | (concat "-r " rev " ") | |
313 | "") | |
314 | file | |
315 | " > " temp-name)))) | |
316 | (if (and res (not (and (integerp res) (zerop res)))) | |
317 | (error "Failed to retrieve revision: %s" res)) | |
318 | ||
319 | (if rev | |
320 | (message "Retrieving revision %s... Done." rev) | |
321 | (message "Retrieving latest revision... Done.")) | |
322 | (find-file-noselect temp-name)))) | |
323 | ||
324 | ||
325 | (defun cvs-run-ediff-on-file-descriptor (tin) | |
326 | ;; This is a replacement for cvs-emerge-mode | |
327 | ;; Run after cvs-update. | |
328 | ;; Ediff-merge appropriate revisions of the selected file. | |
329 | (let* ((fileinfo (tin-cookie cvs-cookie-handle tin)) | |
330 | (type (cvs-fileinfo->type fileinfo)) | |
331 | (tmp-file | |
332 | (cvs-retrieve-revision-to-tmpfile fileinfo)) | |
333 | ancestor-file) | |
334 | ||
335 | (or (memq type '(MERGED CONFLICT MODIFIED)) | |
336 | (error | |
337 | "Can only merge `Modified', `Merged' or `Conflict' files")) | |
338 | ||
339 | (cond ((memq type '(MERGED CONFLICT)) | |
340 | (setq ancestor-file | |
341 | (cvs-retrieve-revision-to-tmpfile | |
342 | fileinfo | |
343 | ;; revision | |
344 | (cvs-fileinfo->base-revision fileinfo))) | |
345 | (ediff-merge-buffers-with-ancestor | |
346 | (find-file-noselect tmp-file) | |
347 | (find-file-noselect (cvs-fileinfo->backup-file fileinfo)) | |
348 | (find-file-noselect ancestor-file) | |
349 | nil ; startup-hooks | |
350 | 'ediff-merge-revisions-with-ancestor)) | |
351 | ((eq type 'MODIFIED) | |
352 | (ediff-merge-buffers | |
353 | (find-file-noselect tmp-file) | |
354 | (find-file-noselect (cvs-fileinfo->full-path fileinfo)) | |
355 | nil ; startup-hooks | |
356 | 'ediff-merge-revisions))) | |
357 | (if (stringp tmp-file) (delete-file tmp-file)) | |
358 | (if (stringp ancestor-file) (delete-file ancestor-file)))) | |
359 | ||
360 | ;;; Local Variables: | |
361 | ;;; eval: (put 'ediff-defvar-local 'lisp-indent-hook 'defun) | |
e756eb9f MK |
362 | ;;; eval: (put 'ediff-with-current-buffer 'lisp-indent-hook 1) |
363 | ;;; eval: (put 'ediff-with-current-buffer 'edebug-form-spec '(form body)) | |
8122a6da MK |
364 | ;;; End: |
365 | ||
366 | (provide 'ediff-vers) | |
367 | ||
368 | ;;; ediff-vers.el ends here |