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- ;;; ediff-vers.el --- version control interface to Ediff
-
- ;;; Copyright (C) 1995, 1996 Free Software Foundation, Inc.
-
- ;; Author: Michael Kifer <kifer@cs.sunysb.edu>
-
- ;; 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.
-
-
- ;;; Code:
-
- ;; Compiler pacifier
- (defvar rcs-default-co-switches)
- (defvar sc-mode)
- (defvar cvs-shell)
- (defvar cvs-program)
- (defvar cvs-cookie-handle)
-
- (eval-when-compile
- (load "pcl-cvs" 'noerror)
- (load "rcs" 'noerror)
- (load "generic-sc" 'noerror)
- (load "vc" 'noerror))
- ;; end pacifier
-
- ;; VC.el support
- (defun vc-ediff-internal (rev1 rev2 &optional startup-hooks)
- ;; Run Ediff on versions of the current buffer.
- ;; If REV2 is "" then compare current buffer with REV1.
- ;; If the current buffer is named `F', the version is named `F.~REV~'.
- ;; If `F.~REV~' already exists, it is used instead of being re-created.
- (let (file1 file2 rev1buf rev2buf)
- (save-excursion
- (vc-version-other-window rev1)
- (setq rev1buf (current-buffer)
- file1 (buffer-file-name)))
- (save-excursion
- (or (string= rev2 "") ; use current buffer
- (vc-version-other-window rev2))
- (setq rev2buf (current-buffer)
- file2 (buffer-file-name)))
- (setq startup-hooks
- (cons (` (lambda ()
- (delete-file (, file1))
- (or (, (string= rev2 "")) (delete-file (, file2)))
- ))
- startup-hooks))
- (ediff-buffers
- rev1buf rev2buf
- startup-hooks
- 'ediff-revision)))
-
- ;; RCS.el support
- (defun rcs-ediff-view-revision (&optional rev)
- ;; View previous RCS revision of current file.
- ;; With prefix argument, prompts for a revision name.
- (interactive (list (if current-prefix-arg
- (read-string "Revision: "))))
- (let* ((filename (buffer-file-name (current-buffer)))
- (switches (append '("-p")
- (if rev (list (concat "-r" rev)) nil)))
- (buff (concat (file-name-nondirectory filename) ".~" rev "~")))
- (message "Working ...")
- (setq filename (expand-file-name filename))
- (with-output-to-temp-buffer buff
- (let ((output-buffer (ediff-rcs-get-output-buffer filename buff)))
- (delete-windows-on output-buffer)
- (save-excursion
- (set-buffer output-buffer)
- (apply 'call-process "co" nil t nil
- ;; -q: quiet (no diagnostics)
- (append switches rcs-default-co-switches
- (list "-q" filename)))))
- (message "")
- buff)))
-
- (defun ediff-rcs-get-output-buffer (file name)
- ;; Get a buffer for RCS output for FILE, make it writable and clean it up.
- ;; Optional NAME is name to use instead of `*RCS-output*'.
- ;; This is a modified version from rcs.el v1.1. I use it here to make
- ;; Ediff immune to changes in rcs.el
- (let* ((default-major-mode 'fundamental-mode) ; no frills!
- (buf (get-buffer-create name)))
- (save-excursion
- (set-buffer buf)
- (setq buffer-read-only nil
- default-directory (file-name-directory (expand-file-name file)))
- (erase-buffer))
- buf))
-
- (defun rcs-ediff-internal (rev1 rev2 &optional startup-hooks)
- ;; Run Ediff on versions of the current buffer.
- ;; If REV2 is "" then use current buffer.
- (let ((rev2buf (if (string= rev2 "")
- (current-buffer)
- (rcs-ediff-view-revision rev2)))
- (rev1buf (rcs-ediff-view-revision rev1)))
-
- ;; rcs.el doesn't create temp version files, so we don't have to delete
- ;; anything in startup hooks to ediff-buffers
- (ediff-buffers rev1buf rev2buf startup-hooks 'ediff-revision)
- ))
-
-
- ;; GENERIC-SC.el support
-
- (defun generic-sc-get-latest-rev ()
- (cond ((eq sc-mode 'CCASE)
- (eval "main/LATEST"))
- (t (eval ""))))
-
- (defun generic-sc-ediff-internal (rev1 rev2 &optional startup-hooks)
- ;; Run Ediff on versions of the current buffer.
- ;; If REV2 is "" then compare current buffer with REV1.
- ;; If the current buffer is named `F', the version is named `F.~REV~'.
- ;; If `F.~REV~' already exists, it is used instead of being re-created.
- (let (rev1buf rev2buf)
- (save-excursion
- (if (or (not rev1) (string= rev1 ""))
- (setq rev1 (generic-sc-get-latest-rev)))
- (sc-visit-previous-revision rev1)
- (setq rev1buf (current-buffer)))
- (save-excursion
- (or (string= rev2 "") ; use current buffer
- (sc-visit-previous-revision rev2))
- (setq rev2buf (current-buffer)))
- (ediff-buffers rev1buf rev2buf startup-hooks 'ediff-revision)))
-
-
- ;;; Merge with Version Control
-
- (defun vc-ediff-merge-internal (rev1 rev2 ancestor-rev &optional startup-hooks)
- ;; If ANCESTOR-REV non-nil, merge with ancestor
- (let (buf1 buf2 ancestor-buf)
- (save-excursion
- (vc-version-other-window rev1)
- (setq buf1 (current-buffer)))
- (save-excursion
- (or (string= rev2 "")
- (vc-version-other-window rev2))
- (setq buf2 (current-buffer)))
- (if ancestor-rev
- (save-excursion
- (or (string= ancestor-rev "")
- (vc-version-other-window ancestor-rev))
- (setq ancestor-buf (current-buffer))))
- (setq startup-hooks
- (cons
- (` (lambda ()
- (delete-file (, (buffer-file-name buf1)))
- (or (, (string= rev2 ""))
- (delete-file (, (buffer-file-name buf2))))
- (or (, (string= ancestor-rev ""))
- (, (not ancestor-rev))
- (delete-file (, (buffer-file-name ancestor-buf))))
- ))
- startup-hooks))
- (if ancestor-rev
- (ediff-merge-buffers-with-ancestor
- buf1 buf2 ancestor-buf
- startup-hooks 'ediff-merge-revisions-with-ancestor)
- (ediff-merge-buffers buf1 buf2 startup-hooks 'ediff-merge-revisions))
- ))
-
- (defun rcs-ediff-merge-internal (rev1 rev2 ancestor-rev
- &optional startup-hooks)
- ;; If ANCESTOR-REV non-nil, merge with ancestor
- (let (buf1 buf2 ancestor-buf)
- (setq buf1 (rcs-ediff-view-revision rev1)
- buf2 (if (string= rev2 "")
- (current-buffer)
- (rcs-ediff-view-revision rev2))
- ancestor-buf (if ancestor-rev
- (if (string= ancestor-rev "")
- (current-buffer)
- (rcs-ediff-view-revision ancestor-rev))))
- ;; rcs.el doesn't create temp version files, so we don't have to delete
- ;; anything in startup hooks to ediff-buffers
- (if ancestor-rev
- (ediff-merge-buffers-with-ancestor
- buf1 buf2 ancestor-buf
- startup-hooks 'ediff-merge-revisions-with-ancestor)
- (ediff-merge-buffers buf1 buf2 startup-hooks 'ediff-merge-revisions))))
-
- (defun generic-sc-ediff-merge-internal (rev1 rev2 ancestor-rev
- &optional startup-hooks)
- ;; If ANCESTOR-REV non-nil, merge with ancestor
- (let (buf1 buf2 ancestor-buf)
- (save-excursion
- (if (string= rev1 "")
- (setq rev1 (generic-sc-get-latest-rev)))
- (sc-visit-previous-revision rev1)
- (setq buf1 (current-buffer)))
- (save-excursion
- (or (string= rev2 "")
- (sc-visit-previous-revision rev2))
- (setq buf2 (current-buffer)))
- (if ancestor-rev
- (save-excursion
- (or (string= ancestor-rev "")
- (sc-visit-previous-revision ancestor-rev))
- (setq ancestor-buf (current-buffer))))
- (if ancestor-rev
- (ediff-merge-buffers-with-ancestor
- buf1 buf2 ancestor-buf
- startup-hooks 'ediff-merge-revisions-with-ancestor)
- (ediff-merge-buffers buf1 buf2 startup-hooks 'ediff-merge-revisions))))
-
-
- ;; PCL-CVS.el support
-
- (defun pcl-cvs-ediff-internal (rev1 rev2 &optional startup-hooks)
- ;; Run Ediff on a pair of revisions of the current buffer.
- ;; If REV1 is "", use the latest revision.
- ;; If REV2 is "", use the current buffer as the second file to compare.
- (let ((orig-buf (current-buffer))
- orig-file-name buf1 buf2 file1 file2)
-
- (or (setq orig-file-name (buffer-file-name (current-buffer)))
- (error "Current buffer is not visiting any file"))
- (if (string= rev1 "") (setq rev1 nil)) ; latest revision
- (setq buf1 (ediff-pcl-cvs-view-revision orig-file-name rev1)
- buf2 (if (string= rev2 "")
- orig-buf
- (ediff-pcl-cvs-view-revision orig-file-name rev2))
- file1 (buffer-file-name buf1)
- file2 (buffer-file-name buf2))
- (setq startup-hooks
- (cons (` (lambda ()
- (delete-file (, file1))
- (or (, (string= rev2 "")) (delete-file (, file2)))
- ))
- startup-hooks))
- (ediff-buffers buf1 buf2 startup-hooks 'ediff-revision)))
-
- ;; This function is the standard Ediff's interface to pcl-cvs.
- ;; Works like with other interfaces: runs ediff on versions of the file in the
- ;; current buffer.
- (defun pcl-cvs-ediff-merge-internal (rev1 rev2 ancestor-rev
- &optional startup-hooks)
- ;; Ediff-merge appropriate revisions of the selected file.
- ;; If REV1 is "" then use the latest revision.
- ;; If REV2 is "" then merge current buffer's file with REV1.
- ;; If ANCESTOR-REV is "" then use current buffer's file as ancestor.
- ;; If ANCESTOR-REV is nil, then merge without the ancestor.
- (let ((orig-buf (current-buffer))
- orig-file-name buf1 buf2 ancestor-buf)
-
- (or (setq orig-file-name (buffer-file-name (current-buffer)))
- (error "Current buffer is not visiting any file"))
- (if (string= rev1 "") (setq rev1 nil)) ; latest revision
-
- (setq buf1 (ediff-pcl-cvs-view-revision orig-file-name rev1))
- (setq buf2 (if (string= rev2 "")
- orig-buf
- (ediff-pcl-cvs-view-revision orig-file-name rev2)))
- (if (stringp ancestor-rev)
- (setq ancestor-buf
- (if (string= ancestor-rev "")
- orig-buf
- (ediff-pcl-cvs-view-revision orig-file-name ancestor-rev))))
-
- (setq startup-hooks
- (cons
- (` (lambda ()
- (delete-file (, (buffer-file-name buf1)))
- (or (, (string= rev2 ""))
- (delete-file (, (buffer-file-name buf2))))
- (or (, (string= ancestor-rev ""))
- (, (not ancestor-rev))
- (delete-file (, (buffer-file-name ancestor-buf))))
- ))
- startup-hooks))
-
- (if ancestor-buf
- (ediff-merge-buffers-with-ancestor
- buf1 buf2 ancestor-buf startup-hooks
- 'ediff-merge-revisions-with-ancestor)
- (ediff-merge-buffers
- buf1 buf2 startup-hooks 'ediff-merge-revisions))
- ))
-
- (defun ediff-pcl-cvs-view-revision (file rev)
- ;; if rev = "", get the latest revision
- (let ((temp-name (make-temp-name
- (concat ediff-temp-file-prefix
- "ediff_" rev))))
- (cvs-kill-buffer-visiting temp-name)
- (if rev
- (message "Retrieving revision %s..." rev)
- (message "Retrieving latest revision..."))
- (let ((res (call-process cvs-shell nil nil nil "-c"
- (concat cvs-program " update -p "
- (if rev
- (concat "-r " rev " ")
- "")
- file
- " > " temp-name))))
- (if (and res (not (and (integerp res) (zerop res))))
- (error "Failed to retrieve revision: %s" res))
-
- (if rev
- (message "Retrieving revision %s... Done." rev)
- (message "Retrieving latest revision... Done."))
- (find-file-noselect temp-name))))
-
-
- (defun cvs-run-ediff-on-file-descriptor (tin)
- ;; This is a replacement for cvs-emerge-mode
- ;; Run after cvs-update.
- ;; Ediff-merge appropriate revisions of the selected file.
- (let* ((fileinfo (tin-cookie cvs-cookie-handle tin))
- (type (cvs-fileinfo->type fileinfo))
- (tmp-file
- (cvs-retrieve-revision-to-tmpfile fileinfo))
- ancestor-file)
-
- (or (memq type '(MERGED CONFLICT MODIFIED))
- (error
- "Can only merge `Modified', `Merged' or `Conflict' files"))
-
- (cond ((memq type '(MERGED CONFLICT))
- (setq ancestor-file
- (cvs-retrieve-revision-to-tmpfile
- fileinfo
- ;; revision
- (cvs-fileinfo->base-revision fileinfo)))
- (ediff-merge-buffers-with-ancestor
- (find-file-noselect tmp-file)
- (find-file-noselect (cvs-fileinfo->backup-file fileinfo))
- (find-file-noselect ancestor-file)
- nil ; startup-hooks
- 'ediff-merge-revisions-with-ancestor))
- ((eq type 'MODIFIED)
- (ediff-merge-buffers
- (find-file-noselect tmp-file)
- (find-file-noselect (cvs-fileinfo->full-path fileinfo))
- nil ; startup-hooks
- 'ediff-merge-revisions)))
- (if (stringp tmp-file) (delete-file tmp-file))
- (if (stringp ancestor-file) (delete-file ancestor-file))))
-
- ;;; Local Variables:
- ;;; eval: (put 'ediff-defvar-local 'lisp-indent-hook 'defun)
- ;;; eval: (put 'ediff-eval-in-buffer 'lisp-indent-hook 1)
- ;;; End:
-
- (provide 'ediff-vers)
-
- ;;; ediff-vers.el ends here
-