| 1 | ;;; ediff-vers.el --- version control interface to Ediff |
| 2 | |
| 3 | ;; Copyright (C) 1995-1997, 2001-2013 Free Software Foundation, Inc. |
| 4 | |
| 5 | ;; Author: Michael Kifer <kifer@cs.stonybrook.edu> |
| 6 | ;; Package: ediff |
| 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 3 of the License, or |
| 13 | ;; (at your option) 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. If not, see <http://www.gnu.org/licenses/>. |
| 22 | |
| 23 | ;;; Commentary: |
| 24 | |
| 25 | ;;; Code: |
| 26 | |
| 27 | ;; Compiler pacifier |
| 28 | (defvar rcs-default-co-switches) |
| 29 | |
| 30 | (and noninteractive |
| 31 | (eval-when-compile |
| 32 | (condition-case nil |
| 33 | ;; for compatibility with current stable version of xemacs |
| 34 | (progn |
| 35 | ;;(require 'pcvs nil 'noerror) |
| 36 | ;;(require 'rcs nil 'noerror) |
| 37 | (require 'pcvs) |
| 38 | (require 'rcs)) |
| 39 | (error nil)) |
| 40 | (require 'vc) |
| 41 | (require 'ediff-init) |
| 42 | )) |
| 43 | ;; end pacifier |
| 44 | |
| 45 | (defcustom ediff-keep-tmp-versions nil |
| 46 | "If t, do not delete temporary previous versions for the files on which |
| 47 | comparison or merge operations are being performed." |
| 48 | :type 'boolean |
| 49 | :group 'ediff-vers |
| 50 | ) |
| 51 | |
| 52 | (defalias 'ediff-vc-revision-other-window |
| 53 | (if (fboundp 'vc-revision-other-window) |
| 54 | 'vc-revision-other-window |
| 55 | 'vc-version-other-window)) |
| 56 | |
| 57 | (defalias 'ediff-vc-working-revision |
| 58 | (if (fboundp 'vc-working-revision) |
| 59 | 'vc-working-revision |
| 60 | 'vc-workfile-version)) |
| 61 | |
| 62 | ;; VC.el support |
| 63 | |
| 64 | (eval-when-compile |
| 65 | (require 'vc-hooks)) ;; for vc-call macro |
| 66 | |
| 67 | |
| 68 | (defun ediff-vc-latest-version (file) |
| 69 | "Return the version level of the latest version of FILE in repository." |
| 70 | (if (fboundp 'vc-latest-version) |
| 71 | (vc-latest-version file) |
| 72 | (or (vc-file-getprop file 'vc-latest-revision) |
| 73 | (cond ((vc-backend file) |
| 74 | (vc-call state file) |
| 75 | (vc-file-getprop file 'vc-latest-revision)) |
| 76 | (t (error "File %s is not under version control" file)))) |
| 77 | )) |
| 78 | |
| 79 | |
| 80 | (defun ediff-vc-internal (rev1 rev2 &optional startup-hooks) |
| 81 | ;; Run Ediff on versions of the current buffer. |
| 82 | ;; If REV1 is "", use the latest version of the current buffer's file. |
| 83 | ;; If REV2 is "" then compare current buffer with REV1. |
| 84 | ;; If the current buffer is named `F', the version is named `F.~REV~'. |
| 85 | ;; If `F.~REV~' already exists, it is used instead of being re-created. |
| 86 | (let (file1 file2 rev1buf rev2buf) |
| 87 | (if (string= rev1 "") |
| 88 | (setq rev1 (ediff-vc-latest-version (buffer-file-name)))) |
| 89 | (save-window-excursion |
| 90 | (save-excursion |
| 91 | (ediff-vc-revision-other-window rev1) |
| 92 | (setq rev1buf (current-buffer) |
| 93 | file1 (buffer-file-name))) |
| 94 | (save-excursion |
| 95 | (or (string= rev2 "") ; use current buffer |
| 96 | (ediff-vc-revision-other-window rev2)) |
| 97 | (setq rev2buf (current-buffer) |
| 98 | file2 (buffer-file-name))) |
| 99 | (setq startup-hooks |
| 100 | (cons `(lambda () |
| 101 | (ediff-delete-version-file ,file1) |
| 102 | (or ,(string= rev2 "") (ediff-delete-version-file ,file2))) |
| 103 | startup-hooks))) |
| 104 | (ediff-buffers |
| 105 | rev1buf rev2buf |
| 106 | startup-hooks |
| 107 | 'ediff-revision))) |
| 108 | |
| 109 | ;; RCS.el support |
| 110 | (defun rcs-ediff-view-revision (&optional rev) |
| 111 | ;; View previous RCS revision of current file. |
| 112 | ;; With prefix argument, prompts for a revision name. |
| 113 | (interactive (list (if current-prefix-arg |
| 114 | (read-string "Revision: ")))) |
| 115 | (let* ((filename (buffer-file-name (current-buffer))) |
| 116 | (switches (append '("-p") |
| 117 | (if rev (list (concat "-r" rev)) nil))) |
| 118 | (buff (concat (file-name-nondirectory filename) ".~" rev "~"))) |
| 119 | (message "Working ...") |
| 120 | (setq filename (expand-file-name filename)) |
| 121 | (with-output-to-temp-buffer buff |
| 122 | (ediff-with-current-buffer standard-output |
| 123 | (fundamental-mode)) |
| 124 | (let ((output-buffer (ediff-rcs-get-output-buffer filename buff))) |
| 125 | (delete-windows-on output-buffer) |
| 126 | (with-current-buffer output-buffer |
| 127 | (apply 'call-process "co" nil t nil |
| 128 | ;; -q: quiet (no diagnostics) |
| 129 | (append switches rcs-default-co-switches |
| 130 | (list "-q" filename))))) |
| 131 | (message "") |
| 132 | buff))) |
| 133 | |
| 134 | (defun ediff-rcs-get-output-buffer (file name) |
| 135 | ;; Get a buffer for RCS output for FILE, make it writable and clean it up. |
| 136 | ;; Optional NAME is name to use instead of `*RCS-output*'. |
| 137 | ;; This is a modified version from rcs.el v1.1. I use it here to make |
| 138 | ;; Ediff immune to changes in rcs.el |
| 139 | (let ((buf (get-buffer-create name))) |
| 140 | (with-current-buffer buf |
| 141 | (setq buffer-read-only nil |
| 142 | default-directory (file-name-directory (expand-file-name file))) |
| 143 | (erase-buffer)) |
| 144 | buf)) |
| 145 | |
| 146 | (defun ediff-rcs-internal (rev1 rev2 &optional startup-hooks) |
| 147 | ;; Run Ediff on versions of the current buffer. |
| 148 | ;; If REV2 is "" then use current buffer. |
| 149 | (let (rev2buf rev1buf) |
| 150 | (save-window-excursion |
| 151 | (setq rev2buf (if (string= rev2 "") |
| 152 | (current-buffer) |
| 153 | (rcs-ediff-view-revision rev2)) |
| 154 | rev1buf (rcs-ediff-view-revision rev1))) |
| 155 | |
| 156 | ;; rcs.el doesn't create temp version files, so we don't have to delete |
| 157 | ;; anything in startup hooks to ediff-buffers |
| 158 | (ediff-buffers rev1buf rev2buf startup-hooks 'ediff-revision) |
| 159 | )) |
| 160 | |
| 161 | ;;; Merge with Version Control |
| 162 | |
| 163 | (defun ediff-vc-merge-internal (rev1 rev2 ancestor-rev |
| 164 | &optional startup-hooks merge-buffer-file) |
| 165 | ;; If ANCESTOR-REV non-nil, merge with ancestor |
| 166 | (let (buf1 buf2 ancestor-buf) |
| 167 | (save-window-excursion |
| 168 | (save-excursion |
| 169 | (ediff-vc-revision-other-window rev1) |
| 170 | (setq buf1 (current-buffer))) |
| 171 | (save-excursion |
| 172 | (or (string= rev2 "") |
| 173 | (ediff-vc-revision-other-window rev2)) |
| 174 | (setq buf2 (current-buffer))) |
| 175 | (if ancestor-rev |
| 176 | (save-excursion |
| 177 | (if (string= ancestor-rev "") |
| 178 | (setq ancestor-rev (ediff-vc-working-revision buffer-file-name))) |
| 179 | (ediff-vc-revision-other-window ancestor-rev) |
| 180 | (setq ancestor-buf (current-buffer)))) |
| 181 | (setq startup-hooks |
| 182 | (cons |
| 183 | `(lambda () |
| 184 | (ediff-delete-version-file ,(buffer-file-name buf1)) |
| 185 | (or ,(string= rev2 "") |
| 186 | (ediff-delete-version-file ,(buffer-file-name buf2))) |
| 187 | (or ,(string= ancestor-rev "") |
| 188 | ,(not ancestor-rev) |
| 189 | (ediff-delete-version-file ,(buffer-file-name ancestor-buf))) |
| 190 | ) |
| 191 | startup-hooks))) |
| 192 | (if ancestor-rev |
| 193 | (ediff-merge-buffers-with-ancestor |
| 194 | buf1 buf2 ancestor-buf |
| 195 | startup-hooks 'ediff-merge-revisions-with-ancestor merge-buffer-file) |
| 196 | (ediff-merge-buffers |
| 197 | buf1 buf2 startup-hooks 'ediff-merge-revisions merge-buffer-file)) |
| 198 | )) |
| 199 | |
| 200 | (defun ediff-rcs-merge-internal (rev1 rev2 ancestor-rev |
| 201 | &optional |
| 202 | startup-hooks merge-buffer-file) |
| 203 | ;; If ANCESTOR-REV non-nil, merge with ancestor |
| 204 | (let (buf1 buf2 ancestor-buf) |
| 205 | (save-window-excursion |
| 206 | (setq buf1 (rcs-ediff-view-revision rev1) |
| 207 | buf2 (if (string= rev2 "") |
| 208 | (current-buffer) |
| 209 | (rcs-ediff-view-revision rev2)) |
| 210 | ancestor-buf (if ancestor-rev |
| 211 | (if (string= ancestor-rev "") |
| 212 | (current-buffer) |
| 213 | (rcs-ediff-view-revision ancestor-rev))))) |
| 214 | ;; rcs.el doesn't create temp version files, so we don't have to delete |
| 215 | ;; anything in startup hooks to ediff-buffers |
| 216 | (if ancestor-rev |
| 217 | (ediff-merge-buffers-with-ancestor |
| 218 | buf1 buf2 ancestor-buf |
| 219 | startup-hooks 'ediff-merge-revisions-with-ancestor merge-buffer-file) |
| 220 | (ediff-merge-buffers |
| 221 | buf1 buf2 startup-hooks 'ediff-merge-revisions merge-buffer-file)))) |
| 222 | |
| 223 | |
| 224 | ;; delete version file on exit unless ediff-keep-tmp-versions is true |
| 225 | (defun ediff-delete-version-file (file) |
| 226 | (or ediff-keep-tmp-versions (delete-file file))) |
| 227 | |
| 228 | |
| 229 | (provide 'ediff-vers) |
| 230 | |
| 231 | |
| 232 | ;; Local Variables: |
| 233 | ;; eval: (put 'ediff-defvar-local 'lisp-indent-hook 'defun) |
| 234 | ;; eval: (put 'ediff-with-current-buffer 'lisp-indent-hook 1) |
| 235 | ;; eval: (put 'ediff-with-current-buffer 'edebug-form-spec '(form body)) |
| 236 | ;; End: |
| 237 | |
| 238 | ;;; ediff-vers.el ends here |