1;;; gulp.el --- ask for updates for Lisp packages
2
3;; Copyright (C) 1996, 2001, 2002, 2003, 2004, 2005,
4;;   2006, 2007 Free Software Foundation, Inc.
5
6;; Author: Sam Shteingold <shteingd@math.ucla.edu>
7;; Maintainer: FSF
8;; Keywords: maintenance
9
10;; This file is part of GNU Emacs.
11
12;; GNU Emacs is free software; you can redistribute it and/or modify
13;; it under the terms of the GNU General Public License as published by
14;; the Free Software Foundation; either version 2, or (at your option)
15;; any later version.
16
17;; GNU Emacs is distributed in the hope that it will be useful,
18;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20;; GNU General Public License for more details.
21
22;; You should have received a copy of the GNU General Public License
23;; along with GNU Emacs; see the file COPYING.  If not, write to the
24;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
25;; Boston, MA 02110-1301, USA.
26
27;;; Commentary:
28
29;; Search the emacs/{version}/lisp directory for *.el files, extract the
30;; name of the author or maintainer and send him e-mail requesting
31;; update.
32
33;;; Code:
34(defgroup gulp nil
35  "Ask for updates for Lisp packages."
36  :prefix "-"
37  :group 'maint)
38
39(defcustom gulp-discard "^;+ *Maintainer: *FSF *$"
40  "*The regexp matching the packages not requiring the request for updates."
41  :type 'regexp
42  :group 'gulp)
43
44(defcustom gulp-tmp-buffer "*gulp*" "The name of the temporary buffer."
45  :type 'string
46  :group 'gulp)
47
48(defcustom gulp-max-len 2000
49  "*Distance into a Lisp source file to scan for keywords."
50  :type 'integer
51  :group 'gulp)
52
53(defcustom gulp-request-header
54  (concat
55   "This message was created automatically.
56I'm going to start pretesting a new version of GNU Emacs soon, so I'd
57like to ask if you have any updates for the Emacs packages you work on.
58You're listed as the maintainer of the following package(s):\n\n")
59  "*The starting text of a gulp message."
60  :type 'string
61  :group 'gulp)
62
63(defcustom gulp-request-end
64  (concat
65   "\nIf you have any changes since the version in the previous release ("
66   (format "%d.%d" emacs-major-version emacs-minor-version)
67   "),
68please send them to me ASAP.
69
70Please don't send the whole file.  Instead, please send a patch made with
71`diff -c' that shows precisely the changes you would like me to install.
72Also please include itemized change log entries for your changes;
73please use lisp/ChangeLog as a guide for the style and for what kinds
74of information to include.
75
76Thanks.")
77  "*The closing text in a gulp message."
78  :type 'string
79  :group 'gulp)
80
81(defun gulp-send-requests (dir &optional time)
82  "Send requests for updates to the authors of Lisp packages in directory DIR.
83For each maintainer, the message consists of `gulp-request-header',
84followed by the list of packages (with modification times if the optional
85prefix argument TIME is non-nil), concluded with `gulp-request-end'.
86
87You can't edit the messages, but you can confirm whether to send each one.
88
89The list of addresses for which you decided not to send mail
90is left in the `*gulp*' buffer at the end."
91  (interactive "DRequest updates for Lisp directory: \nP")
92  (save-excursion
93    (set-buffer (get-buffer-create gulp-tmp-buffer))
94    (let ((m-p-alist (gulp-create-m-p-alist
95		      (directory-files dir nil "^[^=].*\\.el$" t)
96		      dir))
97	  ;; Temporarily inhibit undo in the *gulp* buffer.
98	  (buffer-undo-list t)
99	  mail-setup-hook msg node)
100      (setq m-p-alist
101	    (sort m-p-alist
102		  (function (lambda (a b)
103			      (string< (car a) (car b))))))
104      (while (setq node (car m-p-alist))
105	(setq msg (gulp-create-message (cdr node) time))
106	(setq mail-setup-hook
107	      (lambda ()
108		(mail-subject)
109		(insert "It's time for Emacs updates again")
110		(goto-char (point-max))
111		(insert msg)))
112	(mail nil (car node))
113	(goto-char (point-min))
114	(if (y-or-n-p "Send? ") (mail-send)
115	  (kill-this-buffer)
116	  (set-buffer gulp-tmp-buffer)
117	  (insert (format "%s\n\n" node)))
118	(setq m-p-alist (cdr m-p-alist))))
119    (set-buffer gulp-tmp-buffer)
120    (setq buffer-undo-list nil)))
121
122
123(defun gulp-create-message (rec time)
124  "Return the message string for REC, which is a list like (FILE TIME)."
125  (let (node (str gulp-request-header))
126    (while (setq node (car rec))
127      (setq str (concat str "\t" (car node)
128			(if time (concat "\tLast modified:\t" (cdr node)))
129			"\n"))
130      (setq rec (cdr rec)))
131    (concat str gulp-request-end)))
132
133
134(defun gulp-create-m-p-alist (flist dir)
135  "Create the maintainer/package alist for files in FLIST in DIR.
136That is a list of elements, each of the form (MAINTAINER PACKAGES...)."
137  (save-excursion
138    (let (mplist filen node mnt-tm mnt tm fl-tm)
139      (get-buffer-create gulp-tmp-buffer)
140      (set-buffer gulp-tmp-buffer)
141      (setq buffer-undo-list t)
142      (while flist
143	(setq fl-tm (gulp-maintainer (setq filen (car flist)) dir))
144	(if (setq tm (cdr fl-tm) mnt (car fl-tm));; there is a definite maintainer
145	    (if (setq node (assoc mnt mplist));; this is not a new maintainer
146		(setq mplist (cons (cons mnt (cons (cons filen tm) (cdr node)))
147				   (delete node mplist)))
148	      (setq mplist (cons (list mnt (cons filen (cdr fl-tm))) mplist))))
149	(setq flist (cdr flist)))
150      (erase-buffer)
151      mplist)))
152
153(defun gulp-maintainer (filenm dir)
154  "Return a list (MAINTAINER TIMESTAMP) for the package FILENM in directory DIR."
155  (save-excursion
156    (let* ((fl (expand-file-name filenm dir)) mnt
157	   (timest (format-time-string "%Y-%m-%d %a %T %Z"
158				       (elt (file-attributes fl) 5))))
159      (set-buffer gulp-tmp-buffer)
160      (erase-buffer)
161      (insert-file-contents fl nil 0 gulp-max-len)
162      (goto-char 1)
163      (if (re-search-forward gulp-discard nil t)
164	  (setq mnt nil) ;; do nothing, return nil
165	(goto-char 1)
166	(if (and (re-search-forward "^;+ *Maintainer: \\(.*\\)$" nil t)
167		 (> (length (setq mnt (match-string 1))) 0))
168	    () ;; found!
169	  (goto-char 1)
170	  (if (re-search-forward "^;+ *Author: \\(.*\\)$" nil t)
171	      (setq mnt (match-string 1))))
172	(if (= (length mnt) 0) (setq mnt nil))) ;; "^;; Author: $" --> nil
173      (cons mnt timest))))
174
175(provide 'gulp)
176
177;;; arch-tag: 42750a11-460a-4efc-829f-342d075530e5
178;;; gulp.el ends here
179