534 lines
17 KiB
EmacsLisp
534 lines
17 KiB
EmacsLisp
;;; cvs-status.el --- major mode for browsing `cvs status' output -*- lexical-binding: t -*-
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;; Copyright (C) 1999-2024 Free Software Foundation, Inc.
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;; Author: Stefan Monnier <monnier@iro.umontreal.ca>
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;; Keywords: pcl-cvs cvs status tree vc tools
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Todo:
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;; - Somehow allow cvs-status-tree to work on-the-fly
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;;; Code:
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(require 'cl-lib)
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(require 'pcvs)
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;;;
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(defvar-keymap cvs-status-mode-map
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:parent cvs-mode-map
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"n" #'next-line
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"p" #'previous-line
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"N" #'cvs-status-next
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"P" #'cvs-status-prev
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"M-n" #'cvs-status-next
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"M-p" #'cvs-status-prev
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"t" #'cvs-status-cvstrees
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"T" #'cvs-status-trees
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">" #'cvs-mode-checkout)
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;;(easy-menu-define cvs-status-menu cvs-status-mode-map
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;; "Menu for `cvs-status-mode'."
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;; '("CVS-Status"
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;; ["Show Tag Trees" cvs-status-tree t]
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;; ))
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(defvar cvs-status-mode-hook nil
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"Hook run at the end of `cvs-status-mode'.")
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(defconst cvs-status-tags-leader-re "^ Existing Tags:$")
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(defconst cvs-status-entry-leader-re
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"^File:\\s-+\\(?:no file \\)?\\(.*\\S-\\)\\s-+Status: \\(.+\\)$")
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(defconst cvs-status-dir-re "^cvs[.ex]* [a-z]+: Examining \\(.+\\)$")
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(defconst cvs-status-rev-re "[0-9][.0-9]*\\.[.0-9]*[0-9]")
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(defconst cvs-status-tag-re "[ \t]\\([a-zA-Z][^ \t\n.]*\\)")
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(defconst cvs-status-font-lock-keywords
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`((,cvs-status-entry-leader-re
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(1 'cvs-filename)
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(2 'cvs-need-action))
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(,cvs-status-tags-leader-re
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(,cvs-status-rev-re
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(save-excursion (re-search-forward "^\n" nil 'move) (point))
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(progn (re-search-backward cvs-status-tags-leader-re nil t)
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(forward-line 1))
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(0 font-lock-comment-face))
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(,cvs-status-tag-re
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(save-excursion (re-search-forward "^\n" nil 'move) (point))
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(progn (re-search-backward cvs-status-tags-leader-re nil t)
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(forward-line 1))
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(1 font-lock-function-name-face)))))
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(defconst cvs-status-font-lock-defaults
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'(cvs-status-font-lock-keywords t nil nil nil (font-lock-multiline . t)))
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(defvar cvs-minor-wrap-function)
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(defvar cvs-force-command)
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(defvar cvs-minor-current-files)
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(defvar cvs-secondary-branch-prefix)
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(defvar cvs-branch-prefix)
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(defvar cvs-tag-print-rev)
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(put 'cvs-status-mode 'mode-class 'special)
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;;;###autoload
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(define-derived-mode cvs-status-mode fundamental-mode "CVS-Status"
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"Mode used for cvs status output."
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(setq-local font-lock-defaults cvs-status-font-lock-defaults)
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(setq-local cvs-minor-wrap-function #'cvs-status-minor-wrap))
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;; Define cvs-status-next and cvs-status-prev
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(easy-mmode-define-navigation cvs-status cvs-status-entry-leader-re "entry")
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(defun cvs-status-current-file ()
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(save-excursion
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(forward-line 1)
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(or (re-search-backward cvs-status-entry-leader-re nil t)
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(re-search-forward cvs-status-entry-leader-re))
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(let* ((file (match-string 1))
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(cvsdir (and (re-search-backward cvs-status-dir-re nil t)
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(match-string 1)))
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(pcldir (and (if (boundp 'cvs-pcl-cvs-dirchange-re)
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(re-search-backward cvs-pcl-cvs-dirchange-re nil t))
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(match-string 1)))
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(dir ""))
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(let ((default-directory ""))
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(when pcldir (setq dir (expand-file-name pcldir dir)))
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(when cvsdir (setq dir (expand-file-name cvsdir dir)))
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(expand-file-name file dir)))))
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(defun cvs-status-current-tag ()
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(save-excursion
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(let ((pt (point))
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(col (current-column))
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(start (progn (re-search-backward cvs-status-tags-leader-re nil t) (point)))
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(end (progn (re-search-forward "^$" nil t) (point))))
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(when (and (< start pt) (> end pt))
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(goto-char pt)
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(end-of-line)
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(let ((tag nil) (dist pt) (end (point)))
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(beginning-of-line)
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(while (re-search-forward cvs-status-tag-re end t)
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(let* ((cole (current-column))
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(colb (save-excursion
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(goto-char (match-beginning 1)) (current-column)))
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(ndist (min (abs (- cole col)) (abs (- colb col)))))
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(when (< ndist dist)
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(setq dist ndist)
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(setq tag (match-string 1)))))
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tag)))))
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(defun cvs-status-minor-wrap (buf f)
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(let ((data (with-current-buffer buf
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(cons
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(cons (cvs-status-current-file)
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(cvs-status-current-tag))
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(when mark-active
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(save-excursion
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(goto-char (mark))
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(cons (cvs-status-current-file)
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(cvs-status-current-tag))))))))
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(let ((cvs-branch-prefix (cdar data))
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(cvs-secondary-branch-prefix (and (cdar data) (cddr data)))
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(cvs-minor-current-files
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(cons (caar data)
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(when (and (cadr data) (not (equal (caar data) (cadr data))))
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(list (cadr data)))))
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;; FIXME: I need to force because the fileinfos are UNKNOWN
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(cvs-force-command "/F"))
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(funcall f))))
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;;
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;; Tagelt, tag element
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;;
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(cl-defstruct (cvs-tag
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(:constructor nil)
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(:constructor cvs-tag-make
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(vlist &optional name type))
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(:conc-name cvs-tag->))
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vlist
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name
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type)
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(defsubst cvs-status-vl-to-str (vl) (mapconcat #'number-to-string vl "."))
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(defun cvs-tag->string (tag)
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(if (stringp tag) tag
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(let ((name (cvs-tag->name tag))
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(vl (cvs-tag->vlist tag)))
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(if (null name) (cvs-status-vl-to-str vl)
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(let ((rev (if vl (concat " (" (cvs-status-vl-to-str vl) ")") "")))
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(if (consp name) (mapcar (lambda (name) (concat name rev)) name)
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(concat name rev)))))))
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(defun cvs-tag-compare-1 (vl1 vl2)
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(cond
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((and (null vl1) (null vl2)) 'equal)
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((null vl1) 'more2)
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((null vl2) 'more1)
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(t (let ((v1 (car vl1))
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(v2 (car vl2)))
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(cond
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((> v1 v2) 'more1)
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((< v1 v2) 'more2)
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(t (cvs-tag-compare-1 (cdr vl1) (cdr vl2))))))))
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(defsubst cvs-tag-compare (tag1 tag2)
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(cvs-tag-compare-1 (cvs-tag->vlist tag1) (cvs-tag->vlist tag2)))
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(defun cvs-tag-merge (tag1 tag2)
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"Merge TAG1 and TAG2 into one."
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(let ((type1 (cvs-tag->type tag1))
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(type2 (cvs-tag->type tag2))
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(name1 (cvs-tag->name tag1))
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(name2 (cvs-tag->name tag2)))
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(unless (equal (cvs-tag->vlist tag1) (cvs-tag->vlist tag2))
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(setf (cvs-tag->vlist tag1) nil))
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(if type1
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(unless (or (not type2) (equal type1 type2))
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(setf (cvs-tag->type tag1) nil))
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(setf (cvs-tag->type tag1) type2))
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(if name1
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(setf (cvs-tag->name tag1) (cvs-append name1 name2))
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(setf (cvs-tag->name tag1) name2))
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tag1))
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(defun cvs-tree-print (tags printer column)
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"Print the tree of TAGS where each tag's string is given by PRINTER.
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PRINTER should accept both a tag (in which case it should return a string)
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or a string (in which case it should simply return its argument).
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A tag cannot be a CONS. The return value can also be a list of strings,
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if several nodes where merged into one.
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The tree will be printed no closer than column COLUMN."
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(let* ((eol (save-excursion (end-of-line) (current-column)))
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(column (max (+ eol 2) column)))
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(if (null tags) column
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(let* ((rev (cvs-car tags))
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(name (funcall printer (cvs-car rev)))
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(rest (append (cvs-cdr name) (cvs-cdr tags)))
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(prefix
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(save-excursion
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(or (= (forward-line 1) 0) (insert "\n"))
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(cvs-tree-print rest printer column))))
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(cl-assert (>= prefix column))
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(move-to-column prefix t)
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(cl-assert (eolp))
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(insert (cvs-car name))
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(dolist (br (cvs-cdr rev))
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(let* ((column (current-column))
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(brrev (funcall printer (cvs-car br)))
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(brlength (length (cvs-car brrev)))
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(brfill (concat (make-string (/ brlength 2) ? ) "|"))
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(prefix
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(save-excursion
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(insert " -- ")
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(cvs-tree-print (cvs-append brrev brfill (cvs-cdr br))
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printer (current-column)))))
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(delete-region (save-excursion (move-to-column prefix) (point))
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(point))
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(insert " " (make-string (- prefix column 2) ?-) " ")
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(end-of-line)))
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prefix))))
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(defun cvs-tree-merge (tree1 tree2)
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"Merge tags trees TREE1 and TREE2 into one.
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BEWARE: because of stability issues, this is not a symmetric operation."
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(cl-assert (and (listp tree1) (listp tree2)))
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(cond
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((null tree1) tree2)
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((null tree2) tree1)
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(t
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(let* ((rev1 (car tree1))
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(tag1 (cvs-car rev1))
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(vl1 (cvs-tag->vlist tag1))
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(l1 (length vl1))
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(rev2 (car tree2))
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(tag2 (cvs-car rev2))
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(vl2 (cvs-tag->vlist tag2))
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(l2 (length vl2)))
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(cond
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((= l1 l2)
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(pcase (cvs-tag-compare tag1 tag2)
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('more1 (cons rev2 (cvs-tree-merge tree1 (cdr tree2))))
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('more2 (cons rev1 (cvs-tree-merge (cdr tree1) tree2)))
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('equal
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(cons (cons (cvs-tag-merge tag1 tag2)
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(cvs-tree-merge (cvs-cdr rev1) (cvs-cdr rev2)))
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(cvs-tree-merge (cdr tree1) (cdr tree2))))))
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((> l1 l2)
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(cvs-tree-merge
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(list (cons (cvs-tag-make (butlast vl1)) tree1)) tree2))
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((< l1 l2)
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(cvs-tree-merge
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tree1 (list (cons (cvs-tag-make (butlast vl2)) tree2)))))))))
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(defun cvs-tag-make-tag (tag)
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(let ((vl (mapcar #'string-to-number (split-string (nth 2 tag) "\\."))))
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(cvs-tag-make vl (nth 0 tag) (intern (nth 1 tag)))))
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(defun cvs-tags->tree (tags)
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"Make a tree out of a list of TAGS."
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(let ((tags
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(mapcar
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(lambda (tag)
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(let ((tag (cvs-tag-make-tag tag)))
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(list (if (not (eq (cvs-tag->type tag) 'branch)) tag
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(list (cvs-tag-make (butlast (cvs-tag->vlist tag)))
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tag)))))
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tags)))
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(while (cdr tags)
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(let (tl)
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(while tags
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(push (cvs-tree-merge (pop tags) (pop tags)) tl))
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(setq tags (nreverse tl))))
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(car tags)))
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(defun cvs-status-get-tags ()
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"Look for a list of tags, read them in and delete them.
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Return nil if there was an empty list of tags and t if there wasn't
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even a list. Else, return the list of tags where each element of
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the list is a three-string list TAG, KIND, REV."
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(let ((tags nil))
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(if (not (re-search-forward cvs-status-tags-leader-re nil t)) t
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(forward-char 1)
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(let ((pt (point))
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(lastrev nil)
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(case-fold-search t))
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(or
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(looking-at "\\s-+no\\s-+tags")
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(progn ; normal listing
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(while (looking-at "^[ \t]+\\([^ \t\n]+\\)[ \t]+(\\([a-z]+\\): \\(.+\\))$")
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(push (list (match-string 1) (match-string 2) (match-string 3)) tags)
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(forward-line 1))
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(unless (looking-at "^$") (setq tags nil) (goto-char pt))
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tags)
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(progn ; cvstree-style listing
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(while (or (looking-at "^ .+\\(.\\) \\([0-9.]+\\): \\([^\n\t .0-9][^\n\t ]*\\)?$")
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(and lastrev
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(looking-at "^ .+\\(\\) \\(8\\)? \\([^\n\t .0-9][^\n\t ]*\\)$")))
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(setq lastrev (or (match-string 2) lastrev))
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(push (list (match-string 3)
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(if (equal (match-string 1) " ") "branch" "revision")
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lastrev) tags)
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(forward-line 1))
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(unless (looking-at "^$") (setq tags nil) (goto-char pt))
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(setq tags (nreverse tags)))
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(progn ; new tree style listing
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(let* ((re-lead "[ \t]*\\(-+\\)?\\(|\n?[ \t]+\\)*")
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(re3 (concat re-lead "\\(\\.\\)?\\(" cvs-status-rev-re "\\)"))
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(re2 (concat re-lead cvs-status-tag-re "\\(\\)"))
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(re1 (concat re-lead cvs-status-tag-re
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" (\\(" cvs-status-rev-re "\\))")))
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(while (or (looking-at re1) (looking-at re2) (looking-at re3))
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(push (list (match-string 3)
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(if (match-string 1) "branch" "revision")
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(match-string 4)) tags)
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(goto-char (match-end 0))
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(when (eolp) (forward-char 1))))
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(unless (looking-at "^$") (setq tags nil) (goto-char pt))
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(setq tags (nreverse tags))))
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(delete-region pt (point)))
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tags)))
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;; (defun cvs-refontify (beg end)
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;; (when font-lock-mode
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;; (font-lock-fontify-region (1- beg) (1+ end))))
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(defun cvs-status-trees ()
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"Look for a lists of tags, and replace them with trees."
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(interactive)
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(save-excursion
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(goto-char (point-min))
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(let ((inhibit-read-only t)
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(tags nil))
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(while (listp (setq tags (cvs-status-get-tags)))
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;;(let ((pt (save-excursion (forward-line -1) (point))))
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(save-restriction
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(narrow-to-region (point) (point))
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;;(newline)
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(combine-after-change-calls
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(cvs-tree-print (cvs-tags->tree tags) 'cvs-tag->string 3)))
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;;(cvs-refontify pt (point))
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;;(sit-for 0)
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;;)
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))))
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;;;;
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;;;; CVSTree-style trees
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;;;;
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(defvar cvs-tree-use-jisx0208 nil) ;Old compat var.
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(defvar cvs-tree-use-charset
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(cond
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(cvs-tree-use-jisx0208 'jisx0208)
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((char-displayable-p ?━) 'unicode)
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((char-displayable-p (make-char 'japanese-jisx0208 40 44)) 'jisx0208))
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"Non-nil if we should use the graphical glyphs from `japanese-jisx0208'.
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Otherwise, default to ASCII chars like +, - and |.")
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(defconst cvs-tree-char-space
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(pcase cvs-tree-use-charset
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('jisx0208 (make-char 'japanese-jisx0208 33 33))
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('unicode " ")
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(_ " ")))
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(defconst cvs-tree-char-hbar
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(pcase cvs-tree-use-charset
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('jisx0208 (make-char 'japanese-jisx0208 40 44))
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('unicode "━")
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(_ "--")))
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(defconst cvs-tree-char-vbar
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(pcase cvs-tree-use-charset
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('jisx0208 (make-char 'japanese-jisx0208 40 45))
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('unicode "┃")
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(_ "| ")))
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(defconst cvs-tree-char-branch
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(pcase cvs-tree-use-charset
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('jisx0208 (make-char 'japanese-jisx0208 40 50))
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('unicode "┣")
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(_ "+-")))
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(defconst cvs-tree-char-eob ;end of branch
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(pcase cvs-tree-use-charset
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('jisx0208 (make-char 'japanese-jisx0208 40 49))
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('unicode "┗")
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(_ "`-")))
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(defconst cvs-tree-char-bob ;beginning of branch
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(pcase cvs-tree-use-charset
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('jisx0208 (make-char 'japanese-jisx0208 40 51))
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('unicode "┳")
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(_ "+-")))
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(defun cvs-tag-lessp (tag1 tag2)
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(eq (cvs-tag-compare tag1 tag2) 'more2))
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(defvar cvs-tree-nomerge nil)
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(defun cvs-status-cvstrees (&optional arg)
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"Look for a list of tags, and replace it with a tree.
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Optional prefix ARG chooses between two representations."
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(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)))
|
|
(cl-mapcar (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 " ")
|
|
(cl-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 (cl-every #'identity (cl-mapcar #'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)
|
|
(cl-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 them 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
|