[bpt/emacs.git] / lisp / cvs-status.el

;;; cvs-status.el --- major mode for browsing `cvs status' output -*- coding: utf-8 -*-

;; Copyright (C) 1999, 2000, 03, 2004  Free Software Foundation, Inc.

;; Author: Stefan Monnier <monnier@cs.yale.edu>
;; Keywords: pcl-cvs cvs status tree tools

;; 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 2, 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; see the file COPYING.  If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

;;; Commentary:

;; Todo:

;; - Somehow allow cvs-status-tree to work on-the-fly

;;; Code:

(eval-when-compile (require 'cl))
(require 'pcvs-util)

;;;

(defgroup cvs-status nil
  "Major mode for browsing `cvs status' output."
  :group 'pcl-cvs
  :prefix "cvs-status-")

(easy-mmode-defmap cvs-status-mode-map
  '(("n"	. next-line)
    ("p"	. previous-line)
    ("N"	. cvs-status-next)
    ("P"	. cvs-status-prev)
    ("\M-n"	. cvs-status-next)
    ("\M-p"	. cvs-status-prev)
    ("t"	. cvs-status-cvstrees)
    ("T"	. cvs-status-trees))
  "CVS-Status' keymap."
  :group 'cvs-status
  :inherit 'cvs-mode-map)

;;(easy-menu-define cvs-status-menu cvs-status-mode-map
;;  "Menu for `cvs-status-mode'."
;;  '("CVS-Status"
;;    ["Show Tag Trees"	cvs-status-tree	t]
;;    ))

(defvar cvs-status-mode-hook nil
  "Hook run at the end of `cvs-status-mode'.")

(defconst cvs-status-tags-leader-re "^   Existing Tags:$")
(defconst cvs-status-entry-leader-re
  "^File:\\s-+\\(?:no file \\)?\\(.*\\S-\\)\\s-+Status: \\(.+\\)$")
(defconst cvs-status-dir-re "^cvs[.ex]* [a-z]+: Examining \\(.+\\)$")
(defconst cvs-status-rev-re "[0-9][.0-9]*\\.[.0-9]*[0-9]")
(defconst cvs-status-tag-re "[ \t]\\([a-zA-Z][^ \t\n.]*\\)")

(defconst cvs-status-font-lock-keywords
  `((,cvs-status-entry-leader-re
     (1 'cvs-filename-face)
     (2 'cvs-need-action-face))
    (,cvs-status-tags-leader-re
     (,cvs-status-rev-re
      (save-excursion (re-search-forward "^\n" nil 'move) (point))
      (progn (re-search-backward cvs-status-tags-leader-re nil t)
	     (forward-line 1))
      (0 font-lock-comment-face))
     (,cvs-status-tag-re
      (save-excursion (re-search-forward "^\n" nil 'move) (point))
      (progn (re-search-backward cvs-status-tags-leader-re nil t)
	     (forward-line 1))
      (1 font-lock-function-name-face)))))
(defconst cvs-status-font-lock-defaults
  '(cvs-status-font-lock-keywords t nil nil nil (font-lock-multiline . t)))


(put 'cvs-status-mode 'mode-class 'special)
;;;###autoload
(define-derived-mode cvs-status-mode fundamental-mode "CVS-Status"
  "Mode used for cvs status output."
  (set (make-local-variable 'font-lock-defaults) cvs-status-font-lock-defaults)
  (set (make-local-variable 'cvs-minor-wrap-function) 'cvs-status-minor-wrap))

;; Define cvs-status-next and cvs-status-prev
(easy-mmode-define-navigation cvs-status cvs-status-entry-leader-re "entry")

(defun cvs-status-current-file ()
  (save-excursion
    (forward-line 1)
    (or (re-search-backward cvs-status-entry-leader-re nil t)
	(re-search-forward cvs-status-entry-leader-re))
    (let* ((file (match-string 1))
	   (cvsdir (and (re-search-backward cvs-status-dir-re nil t)
			(match-string 1)))
	   (pcldir (and (re-search-backward cvs-pcl-cvs-dirchange-re nil t)
			(match-string 1)))
	   (dir ""))
      (let ((default-directory ""))
	(when pcldir (setq dir (expand-file-name pcldir dir)))
	(when cvsdir (setq dir (expand-file-name cvsdir dir)))
	(expand-file-name file dir)))))

(defun cvs-status-current-tag ()
  (save-excursion
    (let ((pt (point))
	  (col (current-column))
	  (start (progn (re-search-backward cvs-status-tags-leader-re nil t) (point)))
	  (end (progn (re-search-forward "^$" nil t) (point))))
      (when (and (< start pt) (> end pt))
	(goto-char pt)
	(end-of-line)
	(let ((tag nil) (dist pt) (end (point)))
	  (beginning-of-line)
	  (while (re-search-forward cvs-status-tag-re end t)
	    (let* ((cole (current-column))
		   (colb (save-excursion
			   (goto-char (match-beginning 1)) (current-column)))
		   (ndist (min (abs (- cole col)) (abs (- colb col)))))
	      (when (< ndist dist)
		(setq dist ndist)
		(setq tag (match-string 1)))))
	  tag)))))

(defun cvs-status-minor-wrap (buf f)
  (let ((data (with-current-buffer buf
		(cons
		 (cons (cvs-status-current-file)
		       (cvs-status-current-tag))
		 (when mark-active
		   (save-excursion
		     (goto-char (mark))
		     (cons (cvs-status-current-file)
			   (cvs-status-current-tag))))))))
    (let ((cvs-branch-prefix (cdar data))
	  (cvs-secondary-branch-prefix (and (cdar data) (cddr data)))
	  (cvs-minor-current-files
	   (cons (caar data)
		 (when (and (cadr data) (not (equal (caar data) (cadr data))))
		   (list (cadr data)))))
	  ;; FIXME:  I need to force because the fileinfos are UNKNOWN
	  (cvs-force-command "/F"))
      (funcall f))))

;;
;; Tagelt, tag element
;;

(defstruct (cvs-tag
	    (:constructor nil)
	    (:constructor cvs-tag-make
			  (vlist &optional name type))
	    (:conc-name cvs-tag->))
  vlist
  name
  type)

(defsubst cvs-status-vl-to-str (vl) (mapconcat 'number-to-string vl "."))

(defun cvs-tag->string (tag)
  (if (stringp tag) tag
    (let ((name (cvs-tag->name tag))
	   (vl (cvs-tag->vlist tag)))
      (if (null name) (cvs-status-vl-to-str vl)
	(let ((rev (if vl (concat " (" (cvs-status-vl-to-str vl) ")") "")))
	  (if (consp name) (mapcar (lambda (name) (concat name rev)) name)
	    (concat name rev)))))))

(defun cvs-tag-compare-1 (vl1 vl2)
  (cond
   ((and (null vl1) (null vl2)) 'equal)
   ((null vl1) 'more2)
   ((null vl2) 'more1)
   (t (let ((v1 (car vl1))
	    (v2 (car vl2)))
	(cond
	 ((> v1 v2) 'more1)
	 ((< v1 v2) 'more2)
	 (t (cvs-tag-compare-1 (cdr vl1) (cdr vl2))))))))

(defsubst cvs-tag-compare (tag1 tag2)
  (cvs-tag-compare-1 (cvs-tag->vlist tag1) (cvs-tag->vlist tag2)))

(defun cvs-tag-merge (tag1 tag2)
  "Merge TAG1 and TAG2 into one."
  (let ((type1 (cvs-tag->type tag1))
	(type2 (cvs-tag->type tag2))
	(name1 (cvs-tag->name tag1))
	(name2 (cvs-tag->name tag2)))
    (unless (equal (cvs-tag->vlist tag1) (cvs-tag->vlist tag2))
      (setf (cvs-tag->vlist tag1) nil))
    (if type1
	(unless (or (not type2) (equal type1 type2))
	  (setf (cvs-tag->type tag1) nil))
      (setf (cvs-tag->type tag1) type2))
    (if name1
	(setf (cvs-tag->name tag1) (cvs-append name1 name2))
      (setf (cvs-tag->name tag1) name2))
    tag1))

(defun cvs-tree-print (tags printer column)
  "Print the tree of TAGS where each tag's string is given by PRINTER.
PRINTER should accept both a tag (in which case it should return a string)
or a string (in which case it should simply return its argument).
A tag cannot be a CONS.  The return value can also be a list of strings,
if several nodes where merged into one.
The tree will be printed no closer than column COLUMN."

  (let* ((eol (save-excursion (end-of-line) (current-column)))
	 (column (max (+ eol 2) column)))
    (if (null tags) column
      ;;(move-to-column-force column)
      (let* ((rev (cvs-car tags))
	     (name (funcall printer (cvs-car rev)))
	     (rest (append (cvs-cdr name) (cvs-cdr tags)))
	     (prefix
	      (save-excursion
		(or (= (forward-line 1) 0) (insert "\n"))
		(cvs-tree-print rest printer column))))
	(assert (>= prefix column))
	(move-to-column prefix t)
	(assert (eolp))
	(insert (cvs-car name))
	(dolist (br (cvs-cdr rev))
	  (let* ((column (current-column))
		 (brrev (funcall printer (cvs-car br)))
		 (brlength (length (cvs-car brrev)))
		 (brfill (concat (make-string (/ brlength 2) ? ) "|"))
		 (prefix
		  (save-excursion
		    (insert " -- ")
		    (cvs-tree-print (cvs-append brrev brfill (cvs-cdr br))
				    printer (current-column)))))
	    (delete-region (save-excursion (move-to-column prefix) (point))
			   (point))
	    (insert " " (make-string (- prefix column 2) ?-) " ")
	    (end-of-line)))
	prefix))))

(defun cvs-tree-merge (tree1 tree2)
  "Merge tags trees TREE1 and TREE2 into one.
BEWARE:  because of stability issues, this is not a symetric operation."
  (assert (and (listp tree1) (listp tree2)))
  (cond
   ((null tree1) tree2)
   ((null tree2) tree1)
   (t
    (let* ((rev1 (car tree1))
	   (tag1 (cvs-car rev1))
	   (vl1 (cvs-tag->vlist tag1))
	   (l1 (length vl1))
	   (rev2 (car tree2))
	   (tag2 (cvs-car rev2))
	   (vl2 (cvs-tag->vlist tag2))
	   (l2 (length vl2)))
    (cond
     ((= l1 l2)
      (case (cvs-tag-compare tag1 tag2)
	(more1 (list* rev2 (cvs-tree-merge tree1 (cdr tree2))))
	(more2 (list* rev1 (cvs-tree-merge (cdr tree1) tree2)))
	(equal
	 (cons (cons (cvs-tag-merge tag1 tag2)
		     (cvs-tree-merge (cvs-cdr rev1) (cvs-cdr rev2)))
	       (cvs-tree-merge (cdr tree1) (cdr tree2))))))
     ((> l1 l2)
      (cvs-tree-merge
       (list (cons (cvs-tag-make (cvs-butlast vl1)) tree1)) tree2))
     ((< l1 l2)
      (cvs-tree-merge
       tree1 (list (cons (cvs-tag-make (cvs-butlast vl2)) tree2)))))))))

(defun cvs-tag-make-tag (tag)
  (let ((vl (mapcar 'string-to-number (split-string (nth 2 tag) "\\."))))
    (cvs-tag-make vl (nth 0 tag) (intern (nth 1 tag)))))

(defun cvs-tags->tree (tags)
  "Make a tree out of a list of TAGS."
  (let ((tags
	 (mapcar
	  (lambda (tag)
	    (let ((tag (cvs-tag-make-tag tag)))
	      (list (if (not (eq (cvs-tag->type tag) 'branch)) tag
		      (list (cvs-tag-make (cvs-butlast (cvs-tag->vlist tag)))
			    tag)))))
	  tags)))
    (while (cdr tags)
      (let (tl)
	(while tags
	  (push (cvs-tree-merge (pop tags) (pop tags)) tl))
	(setq tags (nreverse tl))))
    (car tags)))

(defun cvs-status-get-tags ()
  "Look for a list of tags, read them in and delete them.
Return nil if there was an empty list of tags and t if there wasn't
even a list.  Else, return the list of tags where each element of
the list is a three-string list TAG, KIND, REV."
  (let ((tags nil))
    (if (not (re-search-forward cvs-status-tags-leader-re nil t)) t
      (forward-char 1)
      (let ((pt (point))
	    (lastrev nil)
	    (case-fold-search t))
	(or
	 (looking-at "\\s-+no\\s-+tags")

	 (progn				; normal listing
	   (while (looking-at "^[ \t]+\\([^ \t\n]+\\)[ \t]+(\\([a-z]+\\): \\(.+\\))$")
	     (push (list (match-string 1) (match-string 2) (match-string 3)) tags)
	     (forward-line 1))
	   (unless (looking-at "^$") (setq tags nil) (goto-char pt))
	   tags)

	 (progn				; cvstree-style listing
	   (while (or (looking-at "^   .+\\(.\\)  \\([0-9.]+\\): \\([^\n\t .0-9][^\n\t ]*\\)?$")
		      (and lastrev
			   (looking-at "^   .+\\(\\)  \\(8\\)?  \\([^\n\t .0-9][^\n\t ]*\\)$")))
	     (setq lastrev (or (match-string 2) lastrev))
	     (push (list (match-string 3)
			 (if (equal (match-string 1) " ") "branch" "revision")
			 lastrev) tags)
	     (forward-line 1))
	   (unless (looking-at "^$") (setq tags nil) (goto-char pt))
	   (setq tags (nreverse tags)))

	 (progn				; new tree style listing
	   (let* ((re-lead "[ \t]*\\(-+\\)?\\(|\n?[ \t]+\\)*")
		  (re3 (concat re-lead "\\(\\.\\)?\\(" cvs-status-rev-re "\\)"))
		  (re2 (concat re-lead cvs-status-tag-re "\\(\\)"))
		  (re1 (concat re-lead cvs-status-tag-re
			       " (\\(" cvs-status-rev-re "\\))")))
	     (while (or (looking-at re1) (looking-at re2) (looking-at re3))
	       (push (list (match-string 3)
			   (if (match-string 1) "branch" "revision")
			   (match-string 4)) tags)
	       (goto-char (match-end 0))
	       (when (eolp) (forward-char 1))))
	   (unless (looking-at "^$") (setq tags nil) (goto-char pt))
	   (setq tags (nreverse tags))))

	(delete-region pt (point)))
      tags)))

(defvar font-lock-mode)
(defun cvs-refontify (beg end)
  (when (and (boundp 'font-lock-mode)
	     font-lock-mode
	     (fboundp 'font-lock-fontify-region))
    (font-lock-fontify-region (1- beg) (1+ end))))

(defun cvs-status-trees ()
  "Look for a lists of tags, and replace them with trees."
  (interactive)
  (save-excursion
    (goto-char (point-min))
    (let ((inhibit-read-only t)
	  (tags nil))
      (while (listp (setq tags (cvs-status-get-tags)))
	;;(let ((pt (save-excursion (forward-line -1) (point))))
	  (save-restriction
	    (narrow-to-region (point) (point))
	    ;;(newline)
	    (combine-after-change-calls
	      (cvs-tree-print (cvs-tags->tree tags) 'cvs-tag->string 3)))
	  ;;(cvs-refontify pt (point))
	  ;;(sit-for 0)
	  ;;)
	  ))))

;;;;
;;;; CVSTree-style trees
;;;;

(defvar cvs-tree-use-jisx0208 nil)	;Old compat var.
(defvar cvs-tree-use-charset
  (cond
   (cvs-tree-use-jisx0208 'jisx0208)
   ((char-displayable-p ?━) 'unicode)
   ((char-displayable-p (make-char 'japanese-jisx0208 40 44)) 'jisx0208))
  "*Non-nil if we should use the graphical glyphs from `japanese-jisx0208'.
Otherwise, default to ASCII chars like +, - and |.")

(defconst cvs-tree-char-space
  (case cvs-tree-use-charset
    (jisx0208 (make-char 'japanese-jisx0208 33 33))
    (unicode " ")
    (t "  ")))
(defconst cvs-tree-char-hbar
  (case cvs-tree-use-charset
    (jisx0208 (make-char 'japanese-jisx0208 40 44))
    (unicode "━")
    (t "--")))
(defconst cvs-tree-char-vbar
  (case cvs-tree-use-charset
    (jisx0208 (make-char 'japanese-jisx0208 40 45))
    (unicode "┃")
    (t "| ")))
(defconst cvs-tree-char-branch
  (case cvs-tree-use-charset
    (jisx0208 (make-char 'japanese-jisx0208 40 50))
    (unicode "┣")
    (t "+-")))
(defconst cvs-tree-char-eob		;end of branch
  (case cvs-tree-use-charset
    (jisx0208 (make-char 'japanese-jisx0208 40 49))
    (unicode "┗")
    (t "`-")))
(defconst cvs-tree-char-bob		;beginning of branch
  (case cvs-tree-use-charset
    (jisx0208 (make-char 'japanese-jisx0208 40 51))
    (unicode "┳")
    (t "+-")))

(defun cvs-tag-lessp (tag1 tag2)
  (eq (cvs-tag-compare tag1 tag2) 'more2))

(defvar cvs-tree-nomerge nil)

(defun cvs-status-cvstrees (&optional arg)
  "Look for a list of tags, and replace it with a tree.
Optional prefix ARG chooses between two representations."
  (interactive "P")
  (when (and cvs-tree-use-charset
	     (not enable-multibyte-characters))
    ;; We need to convert the buffer from unibyte to multibyte
    ;; since we'll use multibyte chars for the tree.
    (let ((modified (buffer-modified-p))
	  (inhibit-read-only t)
	  (inhibit-modification-hooks t))
      (unwind-protect
	  (progn
	    (decode-coding-region (point-min) (point-max) 'undecided)
	    (set-buffer-multibyte t))
	(restore-buffer-modified-p modified))))
  (save-excursion
    (goto-char (point-min))
    (let ((inhibit-read-only t)
	  (tags nil)
	  (cvs-tree-nomerge (if arg (not cvs-tree-nomerge) cvs-tree-nomerge)))
      (while (listp (setq tags (cvs-status-get-tags)))
	(let ((tags (mapcar 'cvs-tag-make-tag tags))
	      ;;(pt (save-excursion (forward-line -1) (point)))
	      )
	  (setq tags (sort tags 'cvs-tag-lessp))
	  (let* ((first (car tags))
		 (prev (if (cvs-tag-p first)
			   (list (car (cvs-tag->vlist first))) nil)))
	    (combine-after-change-calls
	      (cvs-tree-tags-insert tags prev))
	    ;;(cvs-refontify pt (point))
	    ;;(sit-for 0)
	    ))))))

(defun cvs-tree-tags-insert (tags prev)
  (when tags
    (let* ((tag (car tags))
	   (vlist (cvs-tag->vlist tag))
	   (nprev ;"next prev"
	    (let* ((next (cvs-car (cadr tags)))
		   (nprev (if (and cvs-tree-nomerge next
				   (equal vlist (cvs-tag->vlist next)))
			      prev vlist)))
	      (cvs-map (lambda (v p) v) nprev prev)))
	   (after (save-excursion
		   (newline)
		   (cvs-tree-tags-insert (cdr tags) nprev)))
	   (pe t)			;"prev equal"
	   (nas nil))			;"next afters" to be returned
      (insert "   ")
      (do* ((vs vlist (cdr vs))
	    (ps prev (cdr ps))
	    (as after (cdr as)))
	  ((and (null as) (null vs) (null ps))
	   (let ((revname (cvs-status-vl-to-str vlist)))
	     (if (cvs-every 'identity (cvs-map 'equal prev vlist))
		 (insert (make-string (+ 4 (length revname)) ? )
			 (or (cvs-tag->name tag) ""))
	       (insert "  " revname ": " (or (cvs-tag->name tag) "")))))
	(let* ((eq (and pe (equal (car ps) (car vs))))
	       (next-eq (equal (cadr ps) (cadr vs))))
	  (let* ((na+char
		  (if (car as)
		      (if eq
			  (if next-eq (cons t cvs-tree-char-vbar)
			    (cons t cvs-tree-char-branch))
			(cons nil cvs-tree-char-bob))
		    (if eq
			(if next-eq (cons nil cvs-tree-char-space)
			  (cons t cvs-tree-char-eob))
		      (cons nil (if (and (eq (cvs-tag->type tag) 'branch)
					 (cvs-every 'null as))
				    cvs-tree-char-space
				  cvs-tree-char-hbar))))))
	    (insert (cdr na+char))
	    (push (car na+char) nas))
	  (setq pe eq)))
      (nreverse nas))))

;;;;
;;;; Merged trees from different files
;;;;

(defun cvs-tree-fuzzy-merge-1 (trees tree prev)
  )

(defun cvs-tree-fuzzy-merge (trees tree)
  "Do the impossible:  merge TREE into TREES."
  ())

(defun cvs-tree ()
  "Get tags from the status output and merge tham all into a big tree."
  (save-excursion
    (goto-char (point-min))
    (let ((inhibit-read-only t)
	  (trees (make-vector 31 0)) tree)
      (while (listp (setq tree (cvs-tags->tree (cvs-status-get-tags))))
	(cvs-tree-fuzzy-merge trees tree))
      (erase-buffer)
      (let ((cvs-tag-print-rev nil))
	(cvs-tree-print tree 'cvs-tag->string 3)))))


(provide 'cvs-status)

;;; arch-tag: db8b5094-d02a-473e-a476-544e89ff5ad0
;;; cvs-status.el ends here
Commit	Line	Data
5ebfa0ab	1	;;; cvs-status.el --- major mode for browsing `cvs status' output -- coding: utf-8 --
5b467bf4	2
0efd0b3d	3	;; Copyright (C) 1999, 2000, 03, 2004 Free Software Foundation, Inc.
5b467bf4 SM	4
5b467bf4 SM	5	;; Author: Stefan Monnier <monnier@cs.yale.edu>
337bfec7	6	;; Keywords: pcl-cvs cvs status tree tools
5b467bf4 SM	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
5b467bf4 SM	29	;; - Somehow allow cvs-status-tree to work on-the-fly
	30
	31	;;; Code:
	32
	33	(eval-when-compile (require 'cl))
	34	(require 'pcvs-util)
	35
	36	;;;
	37
	38	(defgroup cvs-status nil
	39	"Major mode for browsing `cvs status' output."
	40	:group 'pcl-cvs
	41	:prefix "cvs-status-")
	42
	43	(easy-mmode-defmap cvs-status-mode-map
	44	'(("n" . next-line)
5b467bf4	45	("p" . previous-line)
184c5091 SM	46	("N" . cvs-status-next)
	47	("P" . cvs-status-prev)
	48	("\M-n" . cvs-status-next)
	49	("\M-p" . cvs-status-prev)
5b467bf4 SM	50	("t" . cvs-status-cvstrees)
	51	("T" . cvs-status-trees))
	52	"CVS-Status' keymap."
	53	:group 'cvs-status
	54	:inherit 'cvs-mode-map)
	55
	56	;;(easy-menu-define cvs-status-menu cvs-status-mode-map
	57	;; "Menu for `cvs-status-mode'."
	58	;; '("CVS-Status"
	59	;; ["Show Tag Trees" cvs-status-tree t]
	60	;; ))
	61
	62	(defvar cvs-status-mode-hook nil
	63	"Hook run at the end of `cvs-status-mode'.")
	64
	65	(defconst cvs-status-tags-leader-re "^ Existing Tags:$")
ad710d9f SM	66	(defconst cvs-status-entry-leader-re
ad710d9f SM	67	"^File:\\s-+\\(?:no file \\)?\\(.*\\S-\\)\\s-+Status: \\(.+\\)$")
5b467bf4 SM	68	(defconst cvs-status-dir-re "^cvs[.ex]* [a-z]+: Examining \\(.+\\)$")
	69	(defconst cvs-status-rev-re "[0-9][.0-9]\\.[.0-9][0-9]")
	70	(defconst cvs-status-tag-re "[ \t]\\([a-zA-Z][^ \t\n.]*\\)")
	71
	72	(defconst cvs-status-font-lock-keywords
	73	`((,cvs-status-entry-leader-re
	74	(1 'cvs-filename-face)
	75	(2 'cvs-need-action-face))
	76	(,cvs-status-tags-leader-re
	77	(,cvs-status-rev-re
	78	(save-excursion (re-search-forward "^\n" nil 'move) (point))
	79	(progn (re-search-backward cvs-status-tags-leader-re nil t)
	80	(forward-line 1))
	81	(0 font-lock-comment-face))
	82	(,cvs-status-tag-re
	83	(save-excursion (re-search-forward "^\n" nil 'move) (point))
	84	(progn (re-search-backward cvs-status-tags-leader-re nil t)
	85	(forward-line 1))
	86	(1 font-lock-function-name-face)))))
	87	(defconst cvs-status-font-lock-defaults
c68088c2	88	'(cvs-status-font-lock-keywords t nil nil nil (font-lock-multiline . t)))
71296446	89
5b467bf4 SM	90
	91	(put 'cvs-status-mode 'mode-class 'special)
	92	;;;###autoload
43e56cba	93	(define-derived-mode cvs-status-mode fundamental-mode "CVS-Status"
5b467bf4 SM	94	"Mode used for cvs status output."
	95	(set (make-local-variable 'font-lock-defaults) cvs-status-font-lock-defaults)
	96	(set (make-local-variable 'cvs-minor-wrap-function) 'cvs-status-minor-wrap))
	97
184c5091 SM	98	;; Define cvs-status-next and cvs-status-prev
184c5091 SM	99	(easy-mmode-define-navigation cvs-status cvs-status-entry-leader-re "entry")
5b467bf4 SM	100
	101	(defun cvs-status-current-file ()
	102	(save-excursion
	103	(forward-line 1)
	104	(or (re-search-backward cvs-status-entry-leader-re nil t)
	105	(re-search-forward cvs-status-entry-leader-re))
	106	(let* ((file (match-string 1))
	107	(cvsdir (and (re-search-backward cvs-status-dir-re nil t)
	108	(match-string 1)))
	109	(pcldir (and (re-search-backward cvs-pcl-cvs-dirchange-re nil t)
	110	(match-string 1)))
	111	(dir ""))
	112	(let ((default-directory ""))
	113	(when pcldir (setq dir (expand-file-name pcldir dir)))
	114	(when cvsdir (setq dir (expand-file-name cvsdir dir)))
	115	(expand-file-name file dir)))))
	116
	117	(defun cvs-status-current-tag ()
	118	(save-excursion
	119	(let ((pt (point))
	120	(col (current-column))
	121	(start (progn (re-search-backward cvs-status-tags-leader-re nil t) (point)))
	122	(end (progn (re-search-forward "^$" nil t) (point))))
	123	(when (and (< start pt) (> end pt))
	124	(goto-char pt)
	125	(end-of-line)
	126	(let ((tag nil) (dist pt) (end (point)))
	127	(beginning-of-line)
	128	(while (re-search-forward cvs-status-tag-re end t)
	129	(let* ((cole (current-column))
	130	(colb (save-excursion
	131	(goto-char (match-beginning 1)) (current-column)))
	132	(ndist (min (abs (- cole col)) (abs (- colb col)))))
	133	(when (< ndist dist)
	134	(setq dist ndist)
	135	(setq tag (match-string 1)))))
	136	tag)))))
	137
	138	(defun cvs-status-minor-wrap (buf f)
	139	(let ((data (with-current-buffer buf
	140	(cons
	141	(cons (cvs-status-current-file)
	142	(cvs-status-current-tag))
befe763f	143	(when mark-active
5b467bf4 SM	144	(save-excursion
	145	(goto-char (mark))
	146	(cons (cvs-status-current-file)
	147	(cvs-status-current-tag))))))))
	148	(let ((cvs-branch-prefix (cdar data))
	149	(cvs-secondary-branch-prefix (and (cdar data) (cddr data)))
	150	(cvs-minor-current-files
	151	(cons (caar data)
	152	(when (and (cadr data) (not (equal (caar data) (cadr data))))
	153	(list (cadr data)))))
	154	;; FIXME: I need to force because the fileinfos are UNKNOWN
	155	(cvs-force-command "/F"))
	156	(funcall f))))
	157
	158	;;
	159	;; Tagelt, tag element
	160	;;
	161
	162	(defstruct (cvs-tag
	163	(:constructor nil)
	164	(:constructor cvs-tag-make
	165	(vlist &optional name type))
	166	(:conc-name cvs-tag->))
	167	vlist
	168	name
	169	type)
	170
	171	(defsubst cvs-status-vl-to-str (vl) (mapconcat 'number-to-string vl "."))
	172
	173	(defun cvs-tag->string (tag)
	174	(if (stringp tag) tag
	175	(let ((name (cvs-tag->name tag))
	176	(vl (cvs-tag->vlist tag)))
	177	(if (null name) (cvs-status-vl-to-str vl)
	178	(let ((rev (if vl (concat " (" (cvs-status-vl-to-str vl) ")") "")))
	179	(if (consp name) (mapcar (lambda (name) (concat name rev)) name)
	180	(concat name rev)))))))
	181
	182	(defun cvs-tag-compare-1 (vl1 vl2)
	183	(cond
	184	((and (null vl1) (null vl2)) 'equal)
	185	((null vl1) 'more2)
	186	((null vl2) 'more1)
	187	(t (let ((v1 (car vl1))
	188	(v2 (car vl2)))
	189	(cond
	190	((> v1 v2) 'more1)
	191	((< v1 v2) 'more2)
	192	(t (cvs-tag-compare-1 (cdr vl1) (cdr vl2))))))))
	193
	194	(defsubst cvs-tag-compare (tag1 tag2)
	195	(cvs-tag-compare-1 (cvs-tag->vlist tag1) (cvs-tag->vlist tag2)))
	196
	197	(defun cvs-tag-merge (tag1 tag2)
	198	"Merge TAG1 and TAG2 into one."
	199	(let ((type1 (cvs-tag->type tag1))
	200	(type2 (cvs-tag->type tag2))
	201	(name1 (cvs-tag->name tag1))
	202	(name2 (cvs-tag->name tag2)))
	203	(unless (equal (cvs-tag->vlist tag1) (cvs-tag->vlist tag2))
	204	(setf (cvs-tag->vlist tag1) nil))
	205	(if type1
	206	(unless (or (not type2) (equal type1 type2))
	207	(setf (cvs-tag->type tag1) nil))
208	(setf (cvs-tag->type tag1) type2))
209	(if name1
210	(setf (cvs-tag->name tag1) (cvs-append name1 name2))
211	(setf (cvs-tag->name tag1) name2))
212	tag1))
213
214	(defun cvs-tree-print (tags printer column)
215	"Print the tree of TAGS where each tag's string is given by PRINTER.
216	PRINTER should accept both a tag (in which case it should return a string)
217	or a string (in which case it should simply return its argument).
218	A tag cannot be a CONS. The return value can also be a list of strings,
219	if several nodes where merged into one.
220	The tree will be printed no closer than column COLUMN."
71296446	221
5b467bf4 SM	222	(let* ((eol (save-excursion (end-of-line) (current-column)))
	223	(column (max (+ eol 2) column)))
	224	(if (null tags) column
	225	;;(move-to-column-force column)
	226	(let* ((rev (cvs-car tags))
	227	(name (funcall printer (cvs-car rev)))
	228	(rest (append (cvs-cdr name) (cvs-cdr tags)))
	229	(prefix
	230	(save-excursion
	231	(or (= (forward-line 1) 0) (insert "\n"))
	232	(cvs-tree-print rest printer column))))
	233	(assert (>= prefix column))
	234	(move-to-column prefix t)
	235	(assert (eolp))
	236	(insert (cvs-car name))
	237	(dolist (br (cvs-cdr rev))
	238	(let* ((column (current-column))
	239	(brrev (funcall printer (cvs-car br)))
	240	(brlength (length (cvs-car brrev)))
	241	(brfill (concat (make-string (/ brlength 2) ? ) "\|"))
	242	(prefix
	243	(save-excursion
	244	(insert " -- ")
	245	(cvs-tree-print (cvs-append brrev brfill (cvs-cdr br))
	246	printer (current-column)))))
	247	(delete-region (save-excursion (move-to-column prefix) (point))
	248	(point))
	249	(insert " " (make-string (- prefix column 2) ?-) " ")
	250	(end-of-line)))
	251	prefix))))
	252
	253	(defun cvs-tree-merge (tree1 tree2)
	254	"Merge tags trees TREE1 and TREE2 into one.
	255	BEWARE: because of stability issues, this is not a symetric operation."
	256	(assert (and (listp tree1) (listp tree2)))
	257	(cond
	258	((null tree1) tree2)
	259	((null tree2) tree1)
	260	(t
	261	(let* ((rev1 (car tree1))
	262	(tag1 (cvs-car rev1))
	263	(vl1 (cvs-tag->vlist tag1))
	264	(l1 (length vl1))
	265	(rev2 (car tree2))
	266	(tag2 (cvs-car rev2))
	267	(vl2 (cvs-tag->vlist tag2))
	268	(l2 (length vl2)))
	269	(cond
	270	((= l1 l2)
	271	(case (cvs-tag-compare tag1 tag2)
	272	(more1 (list* rev2 (cvs-tree-merge tree1 (cdr tree2))))
	273	(more2 (list* rev1 (cvs-tree-merge (cdr tree1) tree2)))
	274	(equal
	275	(cons (cons (cvs-tag-merge tag1 tag2)
	276	(cvs-tree-merge (cvs-cdr rev1) (cvs-cdr rev2)))
	277	(cvs-tree-merge (cdr tree1) (cdr tree2))))))
	278	((> l1 l2)
c68088c2 SM	279	(cvs-tree-merge
c68088c2 SM	280	(list (cons (cvs-tag-make (cvs-butlast vl1)) tree1)) tree2))
5b467bf4	281	((< l1 l2)
c68088c2 SM	282	(cvs-tree-merge
c68088c2 SM	283	tree1 (list (cons (cvs-tag-make (cvs-butlast vl2)) tree2)))))))))
5b467bf4 SM	284
5b467bf4 SM	285	(defun cvs-tag-make-tag (tag)
dedffa6a GM	286	(let ((vl (mapcar 'string-to-number (split-string (nth 2 tag) "\\."))))
dedffa6a GM	287	(cvs-tag-make vl (nth 0 tag) (intern (nth 1 tag)))))
5b467bf4 SM	288
	289	(defun cvs-tags->tree (tags)
	290	"Make a tree out of a list of TAGS."
	291	(let ((tags
c68088c2 SM	292	(mapcar
	293	(lambda (tag)
	294	(let ((tag (cvs-tag-make-tag tag)))
	295	(list (if (not (eq (cvs-tag->type tag) 'branch)) tag
	296	(list (cvs-tag-make (cvs-butlast (cvs-tag->vlist tag)))
	297	tag)))))
	298	tags)))
5b467bf4 SM	299	(while (cdr tags)
	300	(let (tl)
	301	(while tags
	302	(push (cvs-tree-merge (pop tags) (pop tags)) tl))
	303	(setq tags (nreverse tl))))
	304	(car tags)))
	305
	306	(defun cvs-status-get-tags ()
	307	"Look for a list of tags, read them in and delete them.
f0529b5b	308	Return nil if there was an empty list of tags and t if there wasn't
5b467bf4 SM	309	even a list. Else, return the list of tags where each element of
	310	the list is a three-string list TAG, KIND, REV."
	311	(let ((tags nil))
	312	(if (not (re-search-forward cvs-status-tags-leader-re nil t)) t
	313	(forward-char 1)
	314	(let ((pt (point))
	315	(lastrev nil)
	316	(case-fold-search t))
	317	(or
	318	(looking-at "\\s-+no\\s-+tags")
	319
	320	(progn ; normal listing
	321	(while (looking-at "^[ \t]+\\([^ \t\n]+\\)[ \t]+(\\([a-z]+\\): \\(.+\\))$")
	322	(push (list (match-string 1) (match-string 2) (match-string 3)) tags)
	323	(forward-line 1))
	324	(unless (looking-at "^$") (setq tags nil) (goto-char pt))
	325	tags)
	326
	327	(progn ; cvstree-style listing
	328	(while (or (looking-at "^ .+\\(.\\) \\([0-9.]+\\): \\([^\n\t .0-9][^\n\t ]*\\)?$")
	329	(and lastrev
	330	(looking-at "^ .+\\(\\) \\(8\\)? \\([^\n\t .0-9][^\n\t ]*\\)$")))
	331	(setq lastrev (or (match-string 2) lastrev))
	332	(push (list (match-string 3)
	333	(if (equal (match-string 1) " ") "branch" "revision")
	334	lastrev) tags)
	335	(forward-line 1))
	336	(unless (looking-at "^$") (setq tags nil) (goto-char pt))
	337	(setq tags (nreverse tags)))
	338
	339	(progn ; new tree style listing
c68088c2	340	(let* ((re-lead "[ \t]\\(-+\\)?\\(\|\n?[ \t]+\\)")
5b467bf4 SM	341	(re3 (concat re-lead "\\(\\.\\)?\\(" cvs-status-rev-re "\\)"))
	342	(re2 (concat re-lead cvs-status-tag-re "\\(\\)"))
	343	(re1 (concat re-lead cvs-status-tag-re
	344	" (\\(" cvs-status-rev-re "\\))")))
	345	(while (or (looking-at re1) (looking-at re2) (looking-at re3))
	346	(push (list (match-string 3)
	347	(if (match-string 1) "branch" "revision")
	348	(match-string 4)) tags)
	349	(goto-char (match-end 0))
	350	(when (eolp) (forward-char 1))))
	351	(unless (looking-at "^$") (setq tags nil) (goto-char pt))
	352	(setq tags (nreverse tags))))
	353
	354	(delete-region pt (point)))
	355	tags)))
	356
	357	(defvar font-lock-mode)
	358	(defun cvs-refontify (beg end)
	359	(when (and (boundp 'font-lock-mode)
	360	font-lock-mode
	361	(fboundp 'font-lock-fontify-region))
	362	(font-lock-fontify-region (1- beg) (1+ end))))
	363
	364	(defun cvs-status-trees ()
	365	"Look for a lists of tags, and replace them with trees."
	366	(interactive)
	367	(save-excursion
	368	(goto-char (point-min))
	369	(let ((inhibit-read-only t)
	370	(tags nil))
	371	(while (listp (setq tags (cvs-status-get-tags)))
	372	;;(let ((pt (save-excursion (forward-line -1) (point))))
	373	(save-restriction
	374	(narrow-to-region (point) (point))
	375	;;(newline)
c68088c2 SM	376	(combine-after-change-calls
c68088c2 SM	377	(cvs-tree-print (cvs-tags->tree tags) 'cvs-tag->string 3)))
5b467bf4	378	;;(cvs-refontify pt (point))
c68088c2	379	;;(sit-for 0)
5b467bf4 SM	380	;;)
	381	))))
	382
c68088c2	383	;;;;
5b467bf4	384	;;;; CVSTree-style trees
c68088c2 SM	385	;;;;
c68088c2 SM	386
5ebfa0ab SM	387	(defvar cvs-tree-use-jisx0208 nil) ;Old compat var.
	388	(defvar cvs-tree-use-charset
	389	(cond
	390	(cvs-tree-use-jisx0208 'jisx0208)
	391	((char-displayable-p ?━) 'unicode)
	392	((char-displayable-p (make-char 'japanese-jisx0208 40 44)) 'jisx0208))
c68088c2 SM	393	"*Non-nil if we should use the graphical glyphs from `japanese-jisx0208'.
	394	Otherwise, default to ASCII chars like +, - and \|.")
	395
	396	(defconst cvs-tree-char-space
5ebfa0ab SM	397	(case cvs-tree-use-charset
	398	(jisx0208 (make-char 'japanese-jisx0208 33 33))
	399	(unicode " ")
	400	(t " ")))
c68088c2	401	(defconst cvs-tree-char-hbar
5ebfa0ab SM	402	(case cvs-tree-use-charset
	403	(jisx0208 (make-char 'japanese-jisx0208 40 44))
	404	(unicode "━")
	405	(t "--")))
c68088c2	406	(defconst cvs-tree-char-vbar
5ebfa0ab SM	407	(case cvs-tree-use-charset
	408	(jisx0208 (make-char 'japanese-jisx0208 40 45))
	409	(unicode "┃")
	410	(t "\| ")))
c68088c2	411	(defconst cvs-tree-char-branch
5ebfa0ab SM	412	(case cvs-tree-use-charset
	413	(jisx0208 (make-char 'japanese-jisx0208 40 50))
	414	(unicode "┣")
	415	(t "+-")))
c68088c2	416	(defconst cvs-tree-char-eob ;end of branch
5ebfa0ab SM	417	(case cvs-tree-use-charset
	418	(jisx0208 (make-char 'japanese-jisx0208 40 49))
	419	(unicode "┗")
	420	(t "`-")))
c68088c2	421	(defconst cvs-tree-char-bob ;beginning of branch
5ebfa0ab SM	422	(case cvs-tree-use-charset
	423	(jisx0208 (make-char 'japanese-jisx0208 40 51))
	424	(unicode "┳")
	425	(t "+-")))
5b467bf4 SM	426
	427	(defun cvs-tag-lessp (tag1 tag2)
	428	(eq (cvs-tag-compare tag1 tag2) 'more2))
	429
184c5091	430	(defvar cvs-tree-nomerge nil)
5b467bf4 SM	431
	432	(defun cvs-status-cvstrees (&optional arg)
	433	"Look for a list of tags, and replace it with a tree.
	434	Optional prefix ARG chooses between two representations."
	435	(interactive "P")
5ebfa0ab	436	(when (and cvs-tree-use-charset
c68088c2 SM	437	(not enable-multibyte-characters))
	438	;; We need to convert the buffer from unibyte to multibyte
	439	;; since we'll use multibyte chars for the tree.
	440	(let ((modified (buffer-modified-p))
	441	(inhibit-read-only t)
	442	(inhibit-modification-hooks t))
	443	(unwind-protect
	444	(progn
	445	(decode-coding-region (point-min) (point-max) 'undecided)
	446	(set-buffer-multibyte t))
	447	(restore-buffer-modified-p modified))))
5b467bf4 SM	448	(save-excursion
	449	(goto-char (point-min))
	450	(let ((inhibit-read-only t)
	451	(tags nil)
	452	(cvs-tree-nomerge (if arg (not cvs-tree-nomerge) cvs-tree-nomerge)))
	453	(while (listp (setq tags (cvs-status-get-tags)))
	454	(let ((tags (mapcar 'cvs-tag-make-tag tags))
	455	;;(pt (save-excursion (forward-line -1) (point)))
	456	)
	457	(setq tags (sort tags 'cvs-tag-lessp))
7382bcae	458	(let* ((first (car tags))
5b467bf4	459	(prev (if (cvs-tag-p first)
7382bcae	460	(list (car (cvs-tag->vlist first))) nil)))
c68088c2 SM	461	(combine-after-change-calls
c68088c2 SM	462	(cvs-tree-tags-insert tags prev))
5b467bf4	463	;;(cvs-refontify pt (point))
c68088c2 SM	464	;;(sit-for 0)
c68088c2 SM	465	))))))
5b467bf4 SM	466
	467	(defun cvs-tree-tags-insert (tags prev)
	468	(when tags
	469	(let* ((tag (car tags))
	470	(vlist (cvs-tag->vlist tag))
	471	(nprev ;"next prev"
	472	(let* ((next (cvs-car (cadr tags)))
	473	(nprev (if (and cvs-tree-nomerge next
	474	(equal vlist (cvs-tag->vlist next)))
	475	prev vlist)))
	476	(cvs-map (lambda (v p) v) nprev prev)))
	477	(after (save-excursion
	478	(newline)
	479	(cvs-tree-tags-insert (cdr tags) nprev)))
	480	(pe t) ;"prev equal"
	481	(nas nil)) ;"next afters" to be returned
	482	(insert " ")
	483	(do* ((vs vlist (cdr vs))
	484	(ps prev (cdr ps))
	485	(as after (cdr as)))
	486	((and (null as) (null vs) (null ps))
	487	(let ((revname (cvs-status-vl-to-str vlist)))
	488	(if (cvs-every 'identity (cvs-map 'equal prev vlist))
	489	(insert (make-string (+ 4 (length revname)) ? )
	490	(or (cvs-tag->name tag) ""))
	491	(insert " " revname ": " (or (cvs-tag->name tag) "")))))
	492	(let* ((eq (and pe (equal (car ps) (car vs))))
	493	(next-eq (equal (cadr ps) (cadr vs))))
	494	(let* ((na+char
	495	(if (car as)
	496	(if eq
c68088c2 SM	497	(if next-eq (cons t cvs-tree-char-vbar)
	498	(cons t cvs-tree-char-branch))
	499	(cons nil cvs-tree-char-bob))
5b467bf4	500	(if eq
c68088c2 SM	501	(if next-eq (cons nil cvs-tree-char-space)
c68088c2 SM	502	(cons t cvs-tree-char-eob))
5b467bf4 SM	503	(cons nil (if (and (eq (cvs-tag->type tag) 'branch)
5b467bf4 SM	504	(cvs-every 'null as))
c68088c2 SM	505	cvs-tree-char-space
c68088c2 SM	506	cvs-tree-char-hbar))))))
5b467bf4 SM	507	(insert (cdr na+char))
	508	(push (car na+char) nas))
	509	(setq pe eq)))
	510	(nreverse nas))))
	511
71296446	512	;;;;
5b467bf4	513	;;;; Merged trees from different files
71296446	514	;;;;
5b467bf4 SM	515
	516	(defun cvs-tree-fuzzy-merge-1 (trees tree prev)
	517	)
	518
	519	(defun cvs-tree-fuzzy-merge (trees tree)
	520	"Do the impossible: merge TREE into TREES."
	521	())
	522
	523	(defun cvs-tree ()
	524	"Get tags from the status output and merge tham all into a big tree."
	525	(save-excursion
	526	(goto-char (point-min))
	527	(let ((inhibit-read-only t)
	528	(trees (make-vector 31 0)) tree)
	529	(while (listp (setq tree (cvs-tags->tree (cvs-status-get-tags))))
	530	(cvs-tree-fuzzy-merge trees tree))
	531	(erase-buffer)
	532	(let ((cvs-tag-print-rev nil))
	533	(cvs-tree-print tree 'cvs-tag->string 3)))))
71296446	534
5b467bf4 SM	535
	536	(provide 'cvs-status)
	537
ab5796a9	538	;;; arch-tag: db8b5094-d02a-473e-a476-544e89ff5ad0
5b467bf4	539	;;; cvs-status.el ends here