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emacs/lisp/cvs-status.el

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;;; cvs-status.el --- major mode for browsing `cvs status' output
;; Copyright (C) 1999, 2000 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 ;; (and (char-display-font 'japanese-jisx0208) t)
"*Non-nil if we should use the graphical glyphs from `japanese-jisx0208'.
Otherwise, default to ASCII chars like +, - and |.")
(defconst cvs-tree-char-space
(if cvs-tree-use-jisx0208 (make-char 'japanese-jisx0208 33 33) " "))
(defconst cvs-tree-char-hbar
(if cvs-tree-use-jisx0208 (make-char 'japanese-jisx0208 40 44) "--"))
(defconst cvs-tree-char-vbar
(if cvs-tree-use-jisx0208 (make-char 'japanese-jisx0208 40 45) "| "))
(defconst cvs-tree-char-branch
(if cvs-tree-use-jisx0208 (make-char 'japanese-jisx0208 40 50) "+-"))
(defconst cvs-tree-char-eob ;end of branch
(if cvs-tree-use-jisx0208 (make-char 'japanese-jisx0208 40 49) "`-"))
(defconst cvs-tree-char-bob ;beginning of branch
(if cvs-tree-use-jisx0208 (make-char 'japanese-jisx0208 40 51) "+-"))
(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-jisx0208
(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)
;;; cvs-status.el ends here
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