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481 lines
16 KiB
EmacsLisp
481 lines
16 KiB
EmacsLisp
;;; lisp-mnt.el --- minor mode for Emacs Lisp maintainers
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;; Copyright (C) 1992, 1994, 1997, 2000 Free Software Foundation, Inc.
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;; Author: Eric S. Raymond <esr@snark.thyrsus.com>
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;; Maintainer: Eric S. Raymond <esr@snark.thyrsus.com>
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;; Created: 14 Jul 1992
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;; Keywords: docs
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;; X-Bogus-Bureaucratic-Cruft: Gruad will get you if you don't watch out!
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;; This file is part of GNU Emacs.
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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
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;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Commentary:
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;; This minor mode adds some services to Emacs-Lisp editing mode.
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;;
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;; First, it knows about the header conventions for library packages.
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;; One entry point supports generating synopses from a library directory.
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;; Another can be used to check for missing headers in library files.
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;;
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;; Another entry point automatically addresses bug mail to a package's
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;; maintainer or author.
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;; This file can be loaded by your lisp-mode-hook. Have it (require 'lisp-mnt)
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;; This file is an example of the header conventions. Note the following
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;; features:
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;;
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;; * Header line --- makes it possible to extract a one-line summary of
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;; the package's uses automatically for use in library synopses, KWIC
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;; indexes and the like.
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;;
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;; Format is three semicolons, followed by the filename, followed by
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;; three dashes, followed by the summary. All fields space-separated.
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;;
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;; * Author line --- contains the name and net address of at least
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;; the principal author.
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;;
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;; If there are multiple authors, they should be listed on continuation
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;; lines led by ;;<TAB>, like this:
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;;
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;; ;; Author: Ashwin Ram <Ram-Ashwin@cs.yale.edu>
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;; ;; Dave Sill <de5@ornl.gov>
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;; ;; David Lawrence <tale@pawl.rpi.edu>
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;; ;; Noah Friedman <friedman@ai.mit.edu>
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;; ;; Joe Wells <jbw@maverick.uswest.com>
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;; ;; Dave Brennan <brennan@hal.com>
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;; ;; Eric Raymond <esr@snark.thyrsus.com>
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;;
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;; This field may have some special values; notably "FSF", meaning
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;; "Free Software Foundation".
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;;
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;; * Maintainer line --- should be a single name/address as in the Author
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;; line, or an address only, or the string "FSF". If there is no maintainer
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;; line, the person(s) in the Author field are presumed to be it. The example
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;; in this file is mildly bogus because the maintainer line is redundant.
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;; The idea behind these two fields is to be able to write a Lisp function
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;; that does "send mail to the author" without having to mine the name out by
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;; hand. Please be careful about surrounding the network address with <> if
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;; there's also a name in the field.
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;;
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;; * Created line --- optional, gives the original creation date of the
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;; file. For historical interest, basically.
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;;
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;; * Version line --- intended to give the reader a clue if they're looking
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;; at a different version of the file than the one they're accustomed to. This
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;; may be an RCS or SCCS header.
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;;
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;; * Adapted-By line --- this is for FSF's internal use. The person named
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;; in this field was the one responsible for installing and adapting the
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;; package for the distribution. (This file doesn't have one because the
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;; author *is* one of the maintainers.)
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;;
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;; * Keywords line --- used by the finder code (now under construction)
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;; for finding Emacs Lisp code related to a topic.
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;;
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;; * X-Bogus-Bureaucratic-Cruft line --- this is a joke and an example
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;; of a comment header. Headers starting with `X-' should never be used
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;; for any real purpose; this is the way to safely add random headers
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;; without invoking the wrath of any program.
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;;
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;; * Commentary line --- enables Lisp code to find the developer's and
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;; maintainers' explanations of the package internals.
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;;
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;; * Change log line --- optional, exists to terminate the commentary
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;; section and start a change-log part, if one exists.
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;;
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;; * Code line --- exists so Lisp can know where commentary and/or
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;; change-log sections end.
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;;
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;; * Footer line --- marks end-of-file so it can be distinguished from
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;; an expanded formfeed or the results of truncation.
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;;; Change Log:
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;; Tue Jul 14 23:44:17 1992 ESR
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;; * Created.
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;;; Code:
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;;; Variables:
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(defgroup lisp-mnt nil
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"Minor mode for Emacs Lisp maintainers."
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:prefix "lm-"
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:group 'maint)
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(defcustom lm-header-prefix "^;;*[ \t]+\\(@\(#\)\\)?[ \t]*\\([\$]\\)?"
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"Prefix that is ignored before the tag.
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For example, you can write the 1st line synopsis string and headers like this
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in your Lisp package:
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;; @(#) package.el -- pacakge description
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;;
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;; @(#) $Maintainer: Person Foo Bar $
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The @(#) construct is used by unix what(1) and
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then $identifier: doc string $ is used by GNU ident(1)"
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:type 'regexp
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:group 'lisp-mnt)
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(defcustom lm-comment-column 16
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"Column used for placing formatted output."
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:type 'integer
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:group 'lisp-mnt)
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(defcustom lm-commentary-header "Commentary\\|Documentation"
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"Regexp which matches start of documentation section."
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:type 'regexp
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:group 'lisp-mnt)
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(defcustom lm-history-header "Change Log\\|History"
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"Regexp which matches the start of code log section."
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:type 'regexp
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:group 'lisp-mnt)
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;;; Functions:
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;; These functions all parse the headers of the current buffer
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(defun lm-get-header-re (header &optional mode)
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"Return regexp for matching HEADER.
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If called with optional MODE and with value `section',
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return section regexp instead."
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(cond ((eq mode 'section)
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(concat "^;;;;* " header ":[ \t]*$"))
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(t
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(concat lm-header-prefix header ":[ \t]*"))))
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(defun lm-get-package-name ()
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"Return package name by looking at the first line."
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(save-excursion
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(goto-char (point-min))
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(if (and (looking-at (concat lm-header-prefix))
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(progn (goto-char (match-end 0))
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(looking-at "\\([^\t ]+\\)")
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(match-end 1)))
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(match-string-no-properties 1))))
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(defun lm-section-mark (header &optional after)
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"Return the buffer location of a given section start marker.
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The HEADER is the section mark string to search for.
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If AFTER is non-nil, return the location of the next line."
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(save-excursion
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(let ((case-fold-search t))
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(goto-char (point-min))
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(if (re-search-forward (lm-get-header-re header 'section) nil t)
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(progn
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(beginning-of-line)
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(if after (forward-line 1))
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(point))))))
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(defsubst lm-code-mark ()
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"Return the buffer location of the `Code' start marker."
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(lm-section-mark "Code"))
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(defsubst lm-commentary-mark ()
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"Return the buffer location of the `Commentary' start marker."
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(lm-section-mark lm-commentary-header))
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(defsubst lm-history-mark ()
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"Return the buffer location of the `History' start marker."
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(lm-section-mark lm-history-header))
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(defun lm-header (header)
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"Return the contents of the header named HEADER."
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(goto-char (point-min))
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(let ((case-fold-search t))
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(if (and (re-search-forward (lm-get-header-re header) (lm-code-mark) t)
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;; RCS ident likes format "$identifier: data$"
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(looking-at "\\([^$\n]+\\)")
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(match-end 1))
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(match-string-no-properties 1))))
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(defun lm-header-multiline (header)
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"Return the contents of the header named HEADER, with continuation lines.
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The returned value is a list of strings, one per line."
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(save-excursion
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(goto-char (point-min))
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(let ((res (lm-header header)))
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(when res
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(setq res (list res))
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(forward-line 1)
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(while (and (looking-at (concat lm-header-prefix "[\t ]+"))
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(progn
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(goto-char (match-end 0))
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(looking-at "\\(.*\\)"))
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(match-end 1))
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(setq res (cons (match-string-no-properties 1) res))
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(forward-line 1)))
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res)))
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;; These give us smart access to the header fields and commentary
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(defmacro lm-with-file (file &rest body)
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(let ((filesym (make-symbol "file")))
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`(save-excursion
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(let ((,filesym ,file))
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(if ,filesym (set-buffer (find-file-noselect ,filesym)))
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(prog1 (progn ,@body)
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(if (and ,filesym (not (get-buffer-window (current-buffer) t)))
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(kill-buffer (current-buffer))))))))
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(put 'lm-with-file 'lisp-indent-function 1)
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(put 'lm-with-file 'edebug-form-spec t)
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(defun lm-summary (&optional file)
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"Return the one-line summary of file FILE, or current buffer if FILE is nil."
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(lm-with-file file
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(goto-char (point-min))
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(if (and (looking-at lm-header-prefix)
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(progn (goto-char (match-end 0))
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(looking-at "[^ ]+[ \t]+--+[ \t]+\\(.*\\)")))
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(let ((summary (match-string-no-properties 1)))
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;; Strip off -*- specifications.
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(if (string-match "[ \t]*-\\*-.*-\\*-" summary)
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(substring summary 0 (match-beginning 0))
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summary)))))
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(defun lm-crack-address (x)
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"Split up an email address X into full name and real email address.
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The value is a cons of the form (FULLNAME . ADDRESS)."
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(cond ((string-match "\\(.+\\) [(<]\\(\\S-+@\\S-+\\)[>)]" x)
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(cons (match-string 1 x)
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(match-string 2 x)))
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((string-match "\\(\\S-+@\\S-+\\) [(<]\\(.*\\)[>)]" x)
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(cons (match-string 2 x)
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(match-string 1 x)))
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((string-match "\\S-+@\\S-+" x)
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(cons nil x))
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(t
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(cons x nil))))
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(defun lm-authors (&optional file)
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"Return the author list of file FILE, or current buffer if FILE is nil.
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Each element of the list is a cons; the car is the full name,
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the cdr is an email address."
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(lm-with-file file
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(let ((authorlist (lm-header-multiline "author")))
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(mapcar 'lm-crack-address authorlist))))
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(defun lm-maintainer (&optional file)
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"Return the maintainer of file FILE, or current buffer if FILE is nil.
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The return value has the form (NAME . ADDRESS)."
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(lm-with-file file
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(let ((maint (lm-header "maintainer")))
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(if maint
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(lm-crack-address maint)
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(car (lm-authors))))))
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(defun lm-creation-date (&optional file)
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"Return the created date given in file FILE, or current buffer if FILE is nil."
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(lm-with-file file
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(lm-header "created")))
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(defun lm-last-modified-date (&optional file iso-date)
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"Return the modify-date given in file FILE, or current buffer if FILE is nil.
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ISO-DATE non-nil means return the date in ISO 8601 format."
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(lm-with-file file
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(when (progn (goto-char (point-min))
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(re-search-forward
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"\\$[I]d: [^ ]+ [^ ]+ \\([^/]+\\)/\\([^/]+\\)/\\([^ ]+\\) "
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(lm-code-mark) t))
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(let ((dd (match-string 3))
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(mm (match-string 2))
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(yyyy (match-string 1)))
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(if iso-date
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(format "%s-%s-%s" yyyy mm dd)
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(format "%s %s %s"
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dd
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(nth (string-to-int mm)
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'("" "Jan" "Feb" "Mar" "Apr" "May" "Jun"
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"Jul" "Aug" "Sep" "Oct" "Nov" "Dec"))
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yyyy))))))
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(defun lm-version (&optional file)
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"Return the version listed in file FILE, or current buffer if FILE is nil.
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This can be found in an RCS or SCCS header."
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(lm-with-file file
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(or (lm-header "version")
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(let ((header-max (lm-code-mark)))
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(goto-char (point-min))
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(cond
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;; Look for an RCS header
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((re-search-forward "\\$[I]d: [^ ]+ \\([^ ]+\\) " header-max t)
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(match-string-no-properties 1))
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((re-search-forward "\\$Revision: +\\([^ ]+\\) " header-max t)
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(match-string-no-properties 1))
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;; Look for an SCCS header
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((re-search-forward
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(concat
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(regexp-quote "@(#)")
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(regexp-quote (file-name-nondirectory (buffer-file-name)))
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"\t\\([012345679.]*\\)")
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header-max t)
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(match-string-no-properties 1)))))))
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(defun lm-keywords (&optional file)
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"Return the keywords given in file FILE, or current buffer if FILE is nil."
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(lm-with-file file
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(let ((keywords (lm-header "keywords")))
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(and keywords (downcase keywords)))))
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(defun lm-adapted-by (&optional file)
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"Return the adapted-by names in file FILE, or current buffer if FILE is nil.
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This is the name of the person who cleaned up this package for
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distribution."
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(lm-with-file file
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(lm-header "adapted-by")))
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(defun lm-commentary (&optional file)
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"Return the commentary in file FILE, or current buffer if FILE is nil.
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The value is returned as a string. In the file, the commentary starts
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with the tag `Commentary' or `Documentation' and ends with one of the
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tags `Code', `Change Log' or `History'."
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(lm-with-file file
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(let ((commentary (lm-commentary-mark))
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(change-log (lm-history-mark))
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(code (lm-code-mark)))
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(cond
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((and commentary change-log)
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(buffer-substring-no-properties commentary change-log))
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((and commentary code)
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(buffer-substring-no-properties commentary code))))))
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;;; Verification and synopses
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(defun lm-insert-at-column (col &rest strings)
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"Insert, at column COL, list of STRINGS."
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(if (> (current-column) col) (insert "\n"))
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(move-to-column col t)
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(apply 'insert strings))
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(defun lm-verify (&optional file showok verb)
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"Check that the current buffer (or FILE if given) is in proper format.
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If FILE is a directory, recurse on its files and generate a report in
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a temporary buffer."
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(interactive)
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(let* ((verb (or verb (interactive-p)))
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(ret (and verb "Ok."))
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name)
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(if (and file (file-directory-p file))
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(setq ret
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(with-temp-buffer
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(mapcar
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(lambda (f)
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(if (string-match ".*\\.el\\'" f)
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(let ((status (lm-verify f)))
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(insert f ":")
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(if status
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(lm-insert-at-column lm-comment-column status
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"\n")
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(if showok
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(lm-insert-at-column lm-comment-column
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"OK\n"))))))
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(directory-files file))))
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(lm-with-file file
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(setq name (lm-get-package-name))
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(setq ret
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(cond
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((null name)
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"Can't find a package NAME")
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((not (lm-authors))
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"Author: tag missing.")
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((not (lm-maintainer))
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"Maintainer: tag missing.")
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((not (lm-summary))
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"Can't find a one-line 'Summary' description")
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((not (lm-keywords))
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"Keywords: tag missing.")
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((not (lm-commentary-mark))
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"Can't find a 'Commentary' section marker.")
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((not (lm-history-mark))
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"Can't find a 'History' section marker.")
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((not (lm-code-mark))
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"Can't find a 'Code' section marker")
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((progn
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(goto-char (point-max))
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(not
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(re-search-backward
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(concat "^;;;[ \t]+" name "[ \t]+ends here[ \t]*$"
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"\\|^;;;[ \t]+ End of file[ \t]+" name)
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nil t)))
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(format "Can't find a footer line for [%s]" name))
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(t
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ret)))))
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(if verb
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(message ret))
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ret))
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(defun lm-synopsis (&optional file showall)
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"Generate a synopsis listing for the buffer or the given FILE if given.
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If FILE is a directory, recurse on its files and generate a report in
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a temporary buffer. If SHOWALL is non-nil, also generate a line for files
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which do not include a recognizable synopsis."
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(interactive
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(list
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(read-file-name "Synopsis for (file or dir): ")))
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(if (and file (file-directory-p file))
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(with-temp-buffer
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(mapcar
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(lambda (f)
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(if (string-match "\\.el\\'" f)
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(let ((syn (lm-synopsis f)))
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(if syn
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(progn
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(insert f ":")
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(lm-insert-at-column lm-comment-column syn "\n"))
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(when showall
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(insert f ":")
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(lm-insert-at-column lm-comment-column "NA\n"))))))
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(directory-files file)))
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(save-excursion
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(if file
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(find-file file))
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(prog1
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(lm-summary)
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(if file
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(kill-buffer (current-buffer)))))))
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(eval-when-compile (defvar report-emacs-bug-address))
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(defun lm-report-bug (topic)
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"Report a bug in the package currently being visited to its maintainer.
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Prompts for bug subject TOPIC. Leaves you in a mail buffer."
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(interactive "sBug Subject: ")
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(require 'emacsbug)
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(let ((package (lm-get-package-name))
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(addr (lm-maintainer))
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(version (lm-version)))
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(compose-mail (if addr
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(concat (car addr) " <" (cdr addr) ">")
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report-emacs-bug-address)
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topic)
|
|
(goto-char (point-max))
|
|
(insert "\nIn " package)
|
|
(if version
|
|
(insert " version " version))
|
|
(newline 2)
|
|
(message
|
|
(substitute-command-keys "Type \\[mail-send] to send bug report."))))
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|
|
|
(provide 'lisp-mnt)
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|
|
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;;; lisp-mnt.el ends here
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