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1 ;;; cvs-status.el --- major mode for browsing `cvs status' output -*- coding: utf-8 -*-
2
3 ;; Copyright (C) 1999, 2000, 03, 2004 Free Software Foundation, Inc.
4
5 ;; Author: Stefan Monnier <monnier@cs.yale.edu>
6 ;; Keywords: pcl-cvs cvs status tree tools
7
8 ;; This file is part of GNU Emacs.
9
10 ;; GNU Emacs is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
13 ;; any later version.
14
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
19
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
24
25 ;;; Commentary:
26
27 ;; Todo:
28
29 ;; - Somehow allow cvs-status-tree to work on-the-fly
30
31 ;;; Code:
32
33 (eval-when-compile (require 'cl))
34 (eval-when-compile (require 'pcvs))
35 (require 'pcvs-util)
36
37 ;;;
38
39 (defgroup cvs-status nil
40 "Major mode for browsing `cvs status' output."
41 :group 'pcl-cvs
42 :prefix "cvs-status-")
43
44 (easy-mmode-defmap cvs-status-mode-map
45 '(("n" . next-line)
46 ("p" . previous-line)
47 ("N" . cvs-status-next)
48 ("P" . cvs-status-prev)
49 ("\M-n" . cvs-status-next)
50 ("\M-p" . cvs-status-prev)
51 ("t" . cvs-status-cvstrees)
52 ("T" . cvs-status-trees)
53 (">" . cvs-status-checkout))
54 "CVS-Status' keymap."
55 :group 'cvs-status
56 :inherit 'cvs-mode-map)
57
58 ;;(easy-menu-define cvs-status-menu cvs-status-mode-map
59 ;; "Menu for `cvs-status-mode'."
60 ;; '("CVS-Status"
61 ;; ["Show Tag Trees" cvs-status-tree t]
62 ;; ))
63
64 (defvar cvs-status-mode-hook nil
65 "Hook run at the end of `cvs-status-mode'.")
66
67 (defconst cvs-status-tags-leader-re "^ Existing Tags:$")
68 (defconst cvs-status-entry-leader-re
69 "^File:\\s-+\\(?:no file \\)?\\(.*\\S-\\)\\s-+Status: \\(.+\\)$")
70 (defconst cvs-status-dir-re "^cvs[.ex]* [a-z]+: Examining \\(.+\\)$")
71 (defconst cvs-status-rev-re "[0-9][.0-9]*\\.[.0-9]*[0-9]")
72 (defconst cvs-status-tag-re "[ \t]\\([a-zA-Z][^ \t\n.]*\\)")
73
74 (defconst cvs-status-font-lock-keywords
75 `((,cvs-status-entry-leader-re
76 (1 'cvs-filename-face)
77 (2 'cvs-need-action-face))
78 (,cvs-status-tags-leader-re
79 (,cvs-status-rev-re
80 (save-excursion (re-search-forward "^\n" nil 'move) (point))
81 (progn (re-search-backward cvs-status-tags-leader-re nil t)
82 (forward-line 1))
83 (0 font-lock-comment-face))
84 (,cvs-status-tag-re
85 (save-excursion (re-search-forward "^\n" nil 'move) (point))
86 (progn (re-search-backward cvs-status-tags-leader-re nil t)
87 (forward-line 1))
88 (1 font-lock-function-name-face)))))
89 (defconst cvs-status-font-lock-defaults
90 '(cvs-status-font-lock-keywords t nil nil nil (font-lock-multiline . t)))
91
92
93 (put 'cvs-status-mode 'mode-class 'special)
94 ;;;###autoload
95 (define-derived-mode cvs-status-mode fundamental-mode "CVS-Status"
96 "Mode used for cvs status output."
97 (set (make-local-variable 'font-lock-defaults) cvs-status-font-lock-defaults)
98 (set (make-local-variable 'cvs-minor-wrap-function) 'cvs-status-minor-wrap))
99
100 ;; Define cvs-status-next and cvs-status-prev
101 (easy-mmode-define-navigation cvs-status cvs-status-entry-leader-re "entry")
102
103 (defun cvs-status-current-file ()
104 (save-excursion
105 (forward-line 1)
106 (or (re-search-backward cvs-status-entry-leader-re nil t)
107 (re-search-forward cvs-status-entry-leader-re))
108 (let* ((file (match-string 1))
109 (cvsdir (and (re-search-backward cvs-status-dir-re nil t)
110 (match-string 1)))
111 (pcldir (and (re-search-backward cvs-pcl-cvs-dirchange-re nil t)
112 (match-string 1)))
113 (dir ""))
114 (let ((default-directory ""))
115 (when pcldir (setq dir (expand-file-name pcldir dir)))
116 (when cvsdir (setq dir (expand-file-name cvsdir dir)))
117 (expand-file-name file dir)))))
118
119 (defun cvs-status-current-tag ()
120 (save-excursion
121 (let ((pt (point))
122 (col (current-column))
123 (start (progn (re-search-backward cvs-status-tags-leader-re nil t) (point)))
124 (end (progn (re-search-forward "^$" nil t) (point))))
125 (when (and (< start pt) (> end pt))
126 (goto-char pt)
127 (end-of-line)
128 (let ((tag nil) (dist pt) (end (point)))
129 (beginning-of-line)
130 (while (re-search-forward cvs-status-tag-re end t)
131 (let* ((cole (current-column))
132 (colb (save-excursion
133 (goto-char (match-beginning 1)) (current-column)))
134 (ndist (min (abs (- cole col)) (abs (- colb col)))))
135 (when (< ndist dist)
136 (setq dist ndist)
137 (setq tag (match-string 1)))))
138 tag)))))
139
140 (defun cvs-status-minor-wrap (buf f)
141 (let ((data (with-current-buffer buf
142 (cons
143 (cons (cvs-status-current-file)
144 (cvs-status-current-tag))
145 (when mark-active
146 (save-excursion
147 (goto-char (mark))
148 (cons (cvs-status-current-file)
149 (cvs-status-current-tag))))))))
150 (let ((cvs-branch-prefix (cdar data))
151 (cvs-secondary-branch-prefix (and (cdar data) (cddr data)))
152 (cvs-minor-current-files
153 (cons (caar data)
154 (when (and (cadr data) (not (equal (caar data) (cadr data))))
155 (list (cadr data)))))
156 ;; FIXME: I need to force because the fileinfos are UNKNOWN
157 (cvs-force-command "/F"))
158 (funcall f))))
159
160 ;;
161 ;; Tagelt, tag element
162 ;;
163
164 (defstruct (cvs-tag
165 (:constructor nil)
166 (:constructor cvs-tag-make
167 (vlist &optional name type))
168 (:conc-name cvs-tag->))
169 vlist
170 name
171 type)
172
173 (defsubst cvs-status-vl-to-str (vl) (mapconcat 'number-to-string vl "."))
174
175 (defun cvs-tag->string (tag)
176 (if (stringp tag) tag
177 (let ((name (cvs-tag->name tag))
178 (vl (cvs-tag->vlist tag)))
179 (if (null name) (cvs-status-vl-to-str vl)
180 (let ((rev (if vl (concat " (" (cvs-status-vl-to-str vl) ")") "")))
181 (if (consp name) (mapcar (lambda (name) (concat name rev)) name)
182 (concat name rev)))))))
183
184 (defun cvs-tag-compare-1 (vl1 vl2)
185 (cond
186 ((and (null vl1) (null vl2)) 'equal)
187 ((null vl1) 'more2)
188 ((null vl2) 'more1)
189 (t (let ((v1 (car vl1))
190 (v2 (car vl2)))
191 (cond
192 ((> v1 v2) 'more1)
193 ((< v1 v2) 'more2)
194 (t (cvs-tag-compare-1 (cdr vl1) (cdr vl2))))))))
195
196 (defsubst cvs-tag-compare (tag1 tag2)
197 (cvs-tag-compare-1 (cvs-tag->vlist tag1) (cvs-tag->vlist tag2)))
198
199 (defun cvs-tag-merge (tag1 tag2)
200 "Merge TAG1 and TAG2 into one."
201 (let ((type1 (cvs-tag->type tag1))
202 (type2 (cvs-tag->type tag2))
203 (name1 (cvs-tag->name tag1))
204 (name2 (cvs-tag->name tag2)))
205 (unless (equal (cvs-tag->vlist tag1) (cvs-tag->vlist tag2))
206 (setf (cvs-tag->vlist tag1) nil))
207 (if type1
208 (unless (or (not type2) (equal type1 type2))
209 (setf (cvs-tag->type tag1) nil))
210 (setf (cvs-tag->type tag1) type2))
211 (if name1
212 (setf (cvs-tag->name tag1) (cvs-append name1 name2))
213 (setf (cvs-tag->name tag1) name2))
214 tag1))
215
216 (defun cvs-tree-print (tags printer column)
217 "Print the tree of TAGS where each tag's string is given by PRINTER.
218 PRINTER should accept both a tag (in which case it should return a string)
219 or a string (in which case it should simply return its argument).
220 A tag cannot be a CONS. The return value can also be a list of strings,
221 if several nodes where merged into one.
222 The tree will be printed no closer than column COLUMN."
223
224 (let* ((eol (save-excursion (end-of-line) (current-column)))
225 (column (max (+ eol 2) column)))
226 (if (null tags) column
227 ;;(move-to-column-force column)
228 (let* ((rev (cvs-car tags))
229 (name (funcall printer (cvs-car rev)))
230 (rest (append (cvs-cdr name) (cvs-cdr tags)))
231 (prefix
232 (save-excursion
233 (or (= (forward-line 1) 0) (insert "\n"))
234 (cvs-tree-print rest printer column))))
235 (assert (>= prefix column))
236 (move-to-column prefix t)
237 (assert (eolp))
238 (insert (cvs-car name))
239 (dolist (br (cvs-cdr rev))
240 (let* ((column (current-column))
241 (brrev (funcall printer (cvs-car br)))
242 (brlength (length (cvs-car brrev)))
243 (brfill (concat (make-string (/ brlength 2) ? ) "|"))
244 (prefix
245 (save-excursion
246 (insert " -- ")
247 (cvs-tree-print (cvs-append brrev brfill (cvs-cdr br))
248 printer (current-column)))))
249 (delete-region (save-excursion (move-to-column prefix) (point))
250 (point))
251 (insert " " (make-string (- prefix column 2) ?-) " ")
252 (end-of-line)))
253 prefix))))
254
255 (defun cvs-tree-merge (tree1 tree2)
256 "Merge tags trees TREE1 and TREE2 into one.
257 BEWARE: because of stability issues, this is not a symetric operation."
258 (assert (and (listp tree1) (listp tree2)))
259 (cond
260 ((null tree1) tree2)
261 ((null tree2) tree1)
262 (t
263 (let* ((rev1 (car tree1))
264 (tag1 (cvs-car rev1))
265 (vl1 (cvs-tag->vlist tag1))
266 (l1 (length vl1))
267 (rev2 (car tree2))
268 (tag2 (cvs-car rev2))
269 (vl2 (cvs-tag->vlist tag2))
270 (l2 (length vl2)))
271 (cond
272 ((= l1 l2)
273 (case (cvs-tag-compare tag1 tag2)
274 (more1 (list* rev2 (cvs-tree-merge tree1 (cdr tree2))))
275 (more2 (list* rev1 (cvs-tree-merge (cdr tree1) tree2)))
276 (equal
277 (cons (cons (cvs-tag-merge tag1 tag2)
278 (cvs-tree-merge (cvs-cdr rev1) (cvs-cdr rev2)))
279 (cvs-tree-merge (cdr tree1) (cdr tree2))))))
280 ((> l1 l2)
281 (cvs-tree-merge
282 (list (cons (cvs-tag-make (butlast vl1)) tree1)) tree2))
283 ((< l1 l2)
284 (cvs-tree-merge
285 tree1 (list (cons (cvs-tag-make (butlast vl2)) tree2)))))))))
286
287 (defun cvs-tag-make-tag (tag)
288 (let ((vl (mapcar 'string-to-number (split-string (nth 2 tag) "\\."))))
289 (cvs-tag-make vl (nth 0 tag) (intern (nth 1 tag)))))
290
291 (defun cvs-tags->tree (tags)
292 "Make a tree out of a list of TAGS."
293 (let ((tags
294 (mapcar
295 (lambda (tag)
296 (let ((tag (cvs-tag-make-tag tag)))
297 (list (if (not (eq (cvs-tag->type tag) 'branch)) tag
298 (list (cvs-tag-make (butlast (cvs-tag->vlist tag)))
299 tag)))))
300 tags)))
301 (while (cdr tags)
302 (let (tl)
303 (while tags
304 (push (cvs-tree-merge (pop tags) (pop tags)) tl))
305 (setq tags (nreverse tl))))
306 (car tags)))
307
308 (defun cvs-status-get-tags ()
309 "Look for a list of tags, read them in and delete them.
310 Return nil if there was an empty list of tags and t if there wasn't
311 even a list. Else, return the list of tags where each element of
312 the list is a three-string list TAG, KIND, REV."
313 (let ((tags nil))
314 (if (not (re-search-forward cvs-status-tags-leader-re nil t)) t
315 (forward-char 1)
316 (let ((pt (point))
317 (lastrev nil)
318 (case-fold-search t))
319 (or
320 (looking-at "\\s-+no\\s-+tags")
321
322 (progn ; normal listing
323 (while (looking-at "^[ \t]+\\([^ \t\n]+\\)[ \t]+(\\([a-z]+\\): \\(.+\\))$")
324 (push (list (match-string 1) (match-string 2) (match-string 3)) tags)
325 (forward-line 1))
326 (unless (looking-at "^$") (setq tags nil) (goto-char pt))
327 tags)
328
329 (progn ; cvstree-style listing
330 (while (or (looking-at "^ .+\\(.\\) \\([0-9.]+\\): \\([^\n\t .0-9][^\n\t ]*\\)?$")
331 (and lastrev
332 (looking-at "^ .+\\(\\) \\(8\\)? \\([^\n\t .0-9][^\n\t ]*\\)$")))
333 (setq lastrev (or (match-string 2) lastrev))
334 (push (list (match-string 3)
335 (if (equal (match-string 1) " ") "branch" "revision")
336 lastrev) tags)
337 (forward-line 1))
338 (unless (looking-at "^$") (setq tags nil) (goto-char pt))
339 (setq tags (nreverse tags)))
340
341 (progn ; new tree style listing
342 (let* ((re-lead "[ \t]*\\(-+\\)?\\(|\n?[ \t]+\\)*")
343 (re3 (concat re-lead "\\(\\.\\)?\\(" cvs-status-rev-re "\\)"))
344 (re2 (concat re-lead cvs-status-tag-re "\\(\\)"))
345 (re1 (concat re-lead cvs-status-tag-re
346 " (\\(" cvs-status-rev-re "\\))")))
347 (while (or (looking-at re1) (looking-at re2) (looking-at re3))
348 (push (list (match-string 3)
349 (if (match-string 1) "branch" "revision")
350 (match-string 4)) tags)
351 (goto-char (match-end 0))
352 (when (eolp) (forward-char 1))))
353 (unless (looking-at "^$") (setq tags nil) (goto-char pt))
354 (setq tags (nreverse tags))))
355
356 (delete-region pt (point)))
357 tags)))
358
359 (defvar font-lock-mode)
360 (defun cvs-refontify (beg end)
361 (when (and (boundp 'font-lock-mode)
362 font-lock-mode
363 (fboundp 'font-lock-fontify-region))
364 (font-lock-fontify-region (1- beg) (1+ end))))
365
366 (defun cvs-status-trees ()
367 "Look for a lists of tags, and replace them with trees."
368 (interactive)
369 (save-excursion
370 (goto-char (point-min))
371 (let ((inhibit-read-only t)
372 (tags nil))
373 (while (listp (setq tags (cvs-status-get-tags)))
374 ;;(let ((pt (save-excursion (forward-line -1) (point))))
375 (save-restriction
376 (narrow-to-region (point) (point))
377 ;;(newline)
378 (combine-after-change-calls
379 (cvs-tree-print (cvs-tags->tree tags) 'cvs-tag->string 3)))
380 ;;(cvs-refontify pt (point))
381 ;;(sit-for 0)
382 ;;)
383 ))))
384
385 ;;;;
386 ;;;; CVSTree-style trees
387 ;;;;
388
389 (defvar cvs-tree-use-jisx0208 nil) ;Old compat var.
390 (defvar cvs-tree-use-charset
391 (cond
392 (cvs-tree-use-jisx0208 'jisx0208)
393 ((char-displayable-p ?━) 'unicode)
394 ((char-displayable-p (make-char 'japanese-jisx0208 40 44)) 'jisx0208))
395 "*Non-nil if we should use the graphical glyphs from `japanese-jisx0208'.
396 Otherwise, default to ASCII chars like +, - and |.")
397
398 (defconst cvs-tree-char-space
399 (case cvs-tree-use-charset
400 (jisx0208 (make-char 'japanese-jisx0208 33 33))
401 (unicode " ")
402 (t " ")))
403 (defconst cvs-tree-char-hbar
404 (case cvs-tree-use-charset
405 (jisx0208 (make-char 'japanese-jisx0208 40 44))
406 (unicode "━")
407 (t "--")))
408 (defconst cvs-tree-char-vbar
409 (case cvs-tree-use-charset
410 (jisx0208 (make-char 'japanese-jisx0208 40 45))
411 (unicode "┃")
412 (t "| ")))
413 (defconst cvs-tree-char-branch
414 (case cvs-tree-use-charset
415 (jisx0208 (make-char 'japanese-jisx0208 40 50))
416 (unicode "┣")
417 (t "+-")))
418 (defconst cvs-tree-char-eob ;end of branch
419 (case cvs-tree-use-charset
420 (jisx0208 (make-char 'japanese-jisx0208 40 49))
421 (unicode "┗")
422 (t "`-")))
423 (defconst cvs-tree-char-bob ;beginning of branch
424 (case cvs-tree-use-charset
425 (jisx0208 (make-char 'japanese-jisx0208 40 51))
426 (unicode "┳")
427 (t "+-")))
428
429 (defun cvs-tag-lessp (tag1 tag2)
430 (eq (cvs-tag-compare tag1 tag2) 'more2))
431
432 (defvar cvs-tree-nomerge nil)
433
434 (defun cvs-status-cvstrees (&optional arg)
435 "Look for a list of tags, and replace it with a tree.
436 Optional prefix ARG chooses between two representations."
437 (interactive "P")
438 (when (and cvs-tree-use-charset
439 (not enable-multibyte-characters))
440 ;; We need to convert the buffer from unibyte to multibyte
441 ;; since we'll use multibyte chars for the tree.
442 (let ((modified (buffer-modified-p))
443 (inhibit-read-only t)
444 (inhibit-modification-hooks t))
445 (unwind-protect
446 (progn
447 (decode-coding-region (point-min) (point-max) 'undecided)
448 (set-buffer-multibyte t))
449 (restore-buffer-modified-p modified))))
450 (save-excursion
451 (goto-char (point-min))
452 (let ((inhibit-read-only t)
453 (tags nil)
454 (cvs-tree-nomerge (if arg (not cvs-tree-nomerge) cvs-tree-nomerge)))
455 (while (listp (setq tags (cvs-status-get-tags)))
456 (let ((tags (mapcar 'cvs-tag-make-tag tags))
457 ;;(pt (save-excursion (forward-line -1) (point)))
458 )
459 (setq tags (sort tags 'cvs-tag-lessp))
460 (let* ((first (car tags))
461 (prev (if (cvs-tag-p first)
462 (list (car (cvs-tag->vlist first))) nil)))
463 (combine-after-change-calls
464 (cvs-tree-tags-insert tags prev))
465 ;;(cvs-refontify pt (point))
466 ;;(sit-for 0)
467 ))))))
468
469 (defun-cvs-mode (cvs-status-checkout . NOARGS) (dir)
470 "Run cvs-checkout against the tag under the point.
471 The files are stored to DIR."
472 (interactive
473 (let* ((module (cvs-get-module))
474 (branch (cvs-prefix-get 'cvs-branch-prefix))
475 (prompt (format "CVS Checkout Directory for `%s%s': "
476 module
477 (if branch (format "(branch: %s)" branch)
478 ""))))
479 (list
480 (read-directory-name prompt
481 nil default-directory nil))))
482 (let ((modules (cvs-string->strings (cvs-get-module)))
483 (flags (cvs-add-branch-prefix
484 (cvs-flags-query 'cvs-checkout-flags "cvs checkout flags")))
485 (cvs-cvsroot (cvs-get-cvsroot)))
486 (cvs-checkout modules dir flags)))
487
488 (defun cvs-tree-tags-insert (tags prev)
489 (when tags
490 (let* ((tag (car tags))
491 (vlist (cvs-tag->vlist tag))
492 (nprev ;"next prev"
493 (let* ((next (cvs-car (cadr tags)))
494 (nprev (if (and cvs-tree-nomerge next
495 (equal vlist (cvs-tag->vlist next)))
496 prev vlist)))
497 (cvs-map (lambda (v p) v) nprev prev)))
498 (after (save-excursion
499 (newline)
500 (cvs-tree-tags-insert (cdr tags) nprev)))
501 (pe t) ;"prev equal"
502 (nas nil)) ;"next afters" to be returned
503 (insert " ")
504 (do* ((vs vlist (cdr vs))
505 (ps prev (cdr ps))
506 (as after (cdr as)))
507 ((and (null as) (null vs) (null ps))
508 (let ((revname (cvs-status-vl-to-str vlist)))
509 (if (cvs-every 'identity (cvs-map 'equal prev vlist))
510 (insert (make-string (+ 4 (length revname)) ? )
511 (or (cvs-tag->name tag) ""))
512 (insert " " revname ": " (or (cvs-tag->name tag) "")))))
513 (let* ((eq (and pe (equal (car ps) (car vs))))
514 (next-eq (equal (cadr ps) (cadr vs))))
515 (let* ((na+char
516 (if (car as)
517 (if eq
518 (if next-eq (cons t cvs-tree-char-vbar)
519 (cons t cvs-tree-char-branch))
520 (cons nil cvs-tree-char-bob))
521 (if eq
522 (if next-eq (cons nil cvs-tree-char-space)
523 (cons t cvs-tree-char-eob))
524 (cons nil (if (and (eq (cvs-tag->type tag) 'branch)
525 (cvs-every 'null as))
526 cvs-tree-char-space
527 cvs-tree-char-hbar))))))
528 (insert (cdr na+char))
529 (push (car na+char) nas))
530 (setq pe eq)))
531 (nreverse nas))))
532
533 ;;;;
534 ;;;; Merged trees from different files
535 ;;;;
536
537 (defun cvs-tree-fuzzy-merge-1 (trees tree prev)
538 )
539
540 (defun cvs-tree-fuzzy-merge (trees tree)
541 "Do the impossible: merge TREE into TREES."
542 ())
543
544 (defun cvs-tree ()
545 "Get tags from the status output and merge tham all into a big tree."
546 (save-excursion
547 (goto-char (point-min))
548 (let ((inhibit-read-only t)
549 (trees (make-vector 31 0)) tree)
550 (while (listp (setq tree (cvs-tags->tree (cvs-status-get-tags))))
551 (cvs-tree-fuzzy-merge trees tree))
552 (erase-buffer)
553 (let ((cvs-tag-print-rev nil))
554 (cvs-tree-print tree 'cvs-tag->string 3)))))
555
556
557 (provide 'cvs-status)
558
559 ;;; arch-tag: db8b5094-d02a-473e-a476-544e89ff5ad0
560 ;;; cvs-status.el ends here