lisp/log-view.el

   1 ;;; log-view.el --- Major mode for browsing RCS/CVS/SCCS log output
   2
   3 ;; Copyright (C) 1999, 2000, 2001  Free Software Foundation, Inc.
   4
   5 ;; Author: Stefan Monnier <monnier@cs.yale.edu>
   6 ;; Keywords: rcs sccs cvs log version-control
   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 ;; - add compatibility with cvs-log.el
  30 ;; - add ability to modify a log-entry (via cvs-mode-admin ;-)
  31 ;; - remove references to cvs-*
  32
  33 ;;; Code:
  34
  35 (eval-when-compile (require 'cl))
  36 (require 'pcvs-util)
  37 (autoload 'vc-version-diff "vc")
  38
  39 (defgroup log-view nil
  40   "Major mode for browsing log output of RCS/CVS/SCCS."
  41   :group 'pcl-cvs
  42   :prefix "log-view-")
  43
  44 (easy-mmode-defmap log-view-mode-map
  45   '(("q" . quit-window)
  46     ("z" . kill-this-buffer)
  47     ("m" . set-mark-command)
  48     ;; ("e" . cvs-mode-edit-log)
  49     ("d" . log-view-diff)
  50     ("f" . log-view-find-version)
  51     ("n" . log-view-msg-next)
  52     ("p" . log-view-msg-prev)
  53     ("N" . log-view-file-next)
  54     ("P" . log-view-file-prev)
  55     ("\M-n" . log-view-file-next)
  56     ("\M-p" . log-view-file-prev))
  57   "Log-View's keymap."
  58   :group 'log-view
  59   ;; Here I really need either buffer-local keymap-inheritance
  60   ;; or a minor-mode-map with lower precedence than the local map.
  61   :inherit (if (boundp 'cvs-mode-map) cvs-mode-map))
  62
  63 (defvar log-view-mode-hook nil
  64   "Hook run at the end of `log-view-mode'.")
  65
  66 (defface log-view-file-face
  67   '((((class color) (background light))
  68      (:background "grey70" :weight bold))
  69     (t (:weight bold)))
  70   "Face for the file header line in `log-view-mode'."
  71   :group 'log-view)
  72 (defvar log-view-file-face 'log-view-file-face)
  73
  74 (defface log-view-message-face
  75   '((((class color) (background light))
  76      (:background "grey85"))
  77     (t (:weight bold)))
  78   "Face for the message header line in `log-view-mode'."
  79   :group 'log-view)
  80 (defvar log-view-message-face 'log-view-message-face)
  81
  82 (defconst log-view-file-re
  83   (concat "^\\("
  84           "Working file: \\(.+\\)"
  85           "\\|SCCS/s\\.\\(.+\\):"
  86           "\\)\n"))
  87 ;; In RCS, a locked revision will look like "revision N.M\tlocked by: FOO".
  88 (defconst log-view-message-re "^\\(revision \\([.0-9]+\\)\\(?:\t.*\\)?\\|rev \\([0-9]+\\):  .*\\|D \\([.0-9]+\\) .*\\)$")
  89
  90 (defconst log-view-font-lock-keywords
  91   `((,log-view-file-re
  92      (2 (if (boundp 'cvs-filename-face) cvs-filename-face) nil t)
  93      (3 (if (boundp 'cvs-filename-face) cvs-filename-face) nil t)
  94      (0 log-view-file-face append))
  95     (,log-view-message-re . log-view-message-face)))
  96 (defconst log-view-font-lock-defaults
  97   '(log-view-font-lock-keywords t nil nil nil))
  98
  99 ;;;;
 100 ;;;; Actual code
 101 ;;;;
 102
 103 ;;;###autoload
 104 (define-derived-mode log-view-mode fundamental-mode "Log-View"
 105   "Major mode for browsing CVS log output."
 106   (setq buffer-read-only t)
 107   (set (make-local-variable 'font-lock-defaults) log-view-font-lock-defaults)
 108   (set (make-local-variable 'cvs-minor-wrap-function) 'log-view-minor-wrap))
 109
 110 ;;;;
 111 ;;;; Navigation
 112 ;;;;
 113
 114 ;; define log-view-{msg,file}-{next,prev}
 115 (easy-mmode-define-navigation log-view-msg log-view-message-re "log message")
 116 (easy-mmode-define-navigation log-view-file log-view-file-re "file")
 117
 118 (defun log-view-goto-rev (rev)
 119   (goto-char (point-min))
 120   (ignore-errors
 121     (while (not (equal rev (log-view-current-tag)))
 122       (log-view-msg-next))
 123     t))
 124
 125 ;;;;
 126 ;;;; Linkage to PCL-CVS (mostly copied from cvs-status.el)
 127 ;;;;
 128
 129 (defconst log-view-dir-re "^cvs[.ex]* [a-z]+: Logging \\(.+\\)$")
 130
 131 (defun log-view-current-file ()
 132   (save-excursion
 133     (forward-line 1)
 134     (or (re-search-backward log-view-file-re nil t)
 135         (re-search-forward log-view-file-re))
 136     (let* ((file (or (match-string 2) (match-string 3)))
 137            (cvsdir (and (re-search-backward log-view-dir-re nil t)
 138                         (match-string 1)))
 139            (pcldir (and (boundp 'cvs-pcl-cvs-dirchange-re)
 140                         (re-search-backward cvs-pcl-cvs-dirchange-re nil t)
 141                         (match-string 1)))
 142            (dir ""))
 143       (let ((default-directory ""))
 144         (when pcldir (setq dir (expand-file-name pcldir dir)))
 145         (when cvsdir (setq dir (expand-file-name cvsdir dir))))
 146       (expand-file-name file dir))))
 147
 148 (defun log-view-current-tag (&optional where)
 149   (save-excursion
 150     (when where (goto-char where))
 151     (forward-line 1)
 152     (let ((pt (point)))
 153       (when (re-search-backward log-view-message-re nil t)
 154         (let ((rev (or (match-string 2) (match-string 3) (match-string 4))))
 155           (unless (re-search-forward log-view-file-re pt t)
 156             rev))))))
 157
 158 (defun log-view-minor-wrap (buf f)
 159   (let ((data (with-current-buffer buf
 160                 (cons
 161                  (cons (log-view-current-file)
 162                        (log-view-current-tag))
 163                  (when mark-active
 164                    (save-excursion
 165                      (goto-char (mark))
 166                      (cons (log-view-current-file)
 167                            (log-view-current-tag))))))))
 168     (let ((cvs-branch-prefix (cdar data))
 169           (cvs-secondary-branch-prefix (and (cdar data) (cddr data)))
 170           (cvs-minor-current-files
 171            (cons (caar data)
 172                  (when (and (cadr data) (not (equal (caar data) (cadr data))))
 173                    (list (cadr data)))))
 174           ;; FIXME:  I need to force because the fileinfos are UNKNOWN
 175           (cvs-force-command "/F"))
 176       (funcall f))))
 177
 178 (defun log-view-find-version (pos)
 179   "Visit the version at point."
 180   (interactive "d")
 181   (save-excursion
 182     (goto-char pos)
 183     (switch-to-buffer (vc-find-version (log-view-current-file)
 184                                        (log-view-current-tag)))))
 185
 186 ;;
 187 ;; diff
 188 ;;
 189
 190 (defun log-view-diff (beg end)
 191   "Get the diff for several revisions.
 192 If the point is the same as the mark, get the diff for this revision.
 193 Otherwise, get the diff between the revisions
 194  were the region starts and ends."
 195   (interactive "r")
 196   (let ((fr (log-view-current-tag beg))
 197         (to (log-view-current-tag end)))
 198     (when (string-equal fr to)
 199       (save-excursion
 200         (goto-char end)
 201         (log-view-msg-next)
 202         (setq to (log-view-current-tag))))
 203     (vc-version-diff (log-view-current-file) to fr)))
 204
 205 (provide 'log-view)
 206
 207 ;;; log-view.el ends here