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106 lines
3.8 KiB
EmacsLisp
106 lines
3.8 KiB
EmacsLisp
;;; patch.el --- mail/apply a patch
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;; Copyright (C) 2001 Free Software Foundation, Inc.
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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 2, or (at your option)
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;; 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; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Author: Thien-Thi Nguyen <ttn@gnu.org>
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;;; Version: 1
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;;; Favorite-Favorite: Favorite-Favorite
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;;; Commentary:
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;; This file has two symmetrical usage modes, for patch creation and
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;; application, respectively. The details are somewhat tuned for Guile
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;; maintenance; probably we should generalize it a bit and add it to
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;; Emacs proper at some point in the future. Long live free software!
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;;
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;; On the patch creation side of things, there are various version
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;; control systems that are happy to write a diff to stdout (and
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;; numerous Emacs interfaces to them all). Thus, we provide only a
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;; simple `patch-send' that composes mail from the current buffer;
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;; the contents of that buffer are left as an exercise for the patch
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;; creator. When preparing the mail, `patch-send' scans the patch
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;; for standard filename headers and sets up a skeleton change log --
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;; filling this in is a good way to earn respect from maintainers (hint
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;; hint). Type `C-c C-c' to send the mail when you are done. (See
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;; `compose-mail' for more info.)
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;;
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;; TODO: Write/document patch-apply side of things.
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;; TODO: Integrate w/ `ediff-patch-buffer' et al.
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;;; Code:
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(require 'cl)
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(require 'update-changelog) ; for stitching
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;; outgoing
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(defvar patch-greeting "hello guile maintainers,\n\n"
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"*String to insert at beginning of patch mail.")
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(defun patch-scan-files ()
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(let (files)
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(save-excursion
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(while (re-search-forward "^[+][+][+] \\(\\S-+\\)" (point-max) t)
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(setq files (cons (cons (match-string 1)
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(match-beginning 0))
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files))))
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(reverse files)))
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(defun patch-common-prefix (filenames)
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(let* ((first-file (car filenames))
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(prefix (and first-file (file-name-directory first-file))))
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(while (and prefix
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(not (string= "" prefix))
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(not (every (lambda (filename)
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(string-match (concat "^" prefix) filename))
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filenames)))
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(setq prefix (file-name-directory (substring prefix 0 -1))))
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prefix))
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(defun patch-changelog-skeleton ()
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(let* ((file-info (patch-scan-files))
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(fullpath-files (mapcar 'car file-info))
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(cut (length (patch-common-prefix fullpath-files)))
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(files (mapcar (lambda (fullpath-file)
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(substring fullpath-file cut))
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fullpath-files)))
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(mapconcat
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(lambda (file)
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(concat (make-string (length file) ?_) "\n" file "\n[writeme]"))
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files
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"\n")))
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(defun patch-send (buffer subject)
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(interactive "bBuffer: \nsSubject: ")
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(when (string= "" subject)
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(error "(empty subject)"))
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(compose-mail "bug-guile@gnu.org" subject)
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(insert (with-current-buffer buffer (buffer-string)))
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(mail-text)
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(insert patch-greeting)
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(save-excursion
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(insert "here is a patch ... [overview/observations/etc]\n\n"
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(patch-changelog-skeleton) "\n\n\n"
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(make-string 72 ?_) "\n")))
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;; incoming
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;;; patch.el ends here
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