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410 lines
15 KiB
EmacsLisp
410 lines
15 KiB
EmacsLisp
;;; add-log.el --- change log maintenance commands for Emacs
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;; Copyright (C) 1985, 1986, 1988, 1993 Free Software Foundation, Inc.
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;; Keywords: maint
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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, 675 Mass Ave, Cambridge, MA 02139, USA.
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;;; Commentary:
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;; This facility is documented in the Emacs Manual.
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;;; Code:
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;;;###autoload
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(defvar change-log-default-name nil
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"*Name of a change log file for \\[add-change-log-entry].")
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(defun change-log-name ()
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(or change-log-default-name
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(if (eq system-type 'vax-vms) "$CHANGE_LOG$.TXT" "ChangeLog")))
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(defun prompt-for-change-log-name ()
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"Prompt for a change log name."
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(let ((default (change-log-name)))
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(expand-file-name
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(read-file-name (format "Log file (default %s): " default)
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nil default))))
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;;;###autoload
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(defun find-change-log (&optional file-name)
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"Find a change log file for \\[add-change-log-entry] and return the name.
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Optional arg FILE-NAME is a name to try first.
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If FILE-NAME is nil, use the value of `change-log-default-name' if non-nil.
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Failing that, use \"ChangeLog\" in the current directory.
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If the file does not exist in the named directory, successive parent
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directories are tried.
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Once a file is found, `change-log-default-name' is set locally in the
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current buffer to the complete file name."
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(or file-name
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(setq file-name (or change-log-default-name
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;; Chase links in the source file
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;; and use the change log in the dir where it points.
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(and buffer-file-name
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(file-name-directory
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(file-chase-links buffer-file-name)))
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default-directory)))
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(if (and (eq file-name change-log-default-name)
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(assq 'change-log-default-name (buffer-local-variables)))
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;; Don't do the searching if we already have a buffer-local value.
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file-name
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(if (file-directory-p file-name)
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(setq file-name (expand-file-name (change-log-name) file-name)))
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;; Chase links before visiting the file.
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;; This makes it easier to use a single change log file
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;; for several related directories.
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(setq file-name (file-chase-links file-name))
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(setq file-name (expand-file-name file-name))
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;; Move up in the dir hierarchy till we find a change log file.
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(let ((file1 file-name)
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parent-dir)
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(while (and (not (file-exists-p file1))
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(progn (setq parent-dir
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(file-name-directory
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(directory-file-name
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(file-name-directory file1))))
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;; Give up if we are already at the root dir.
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(not (string= (file-name-directory file1)
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parent-dir))))
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;; Move up to the parent dir and try again.
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(setq file1 (expand-file-name (change-log-name) parent-dir)))
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;; If we found a change log in a parent, use that.
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(if (file-exists-p file1)
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(setq file-name file1)))
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;; Make a local variable in this buffer so we needn't search again.
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(set (make-local-variable 'change-log-default-name) file-name)
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file-name))
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;;;###autoload
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(defun add-change-log-entry (&optional whoami file-name other-window)
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"Find change log file and add an entry for today.
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Optional arg (interactive prefix) non-nil means prompt for user name and site.
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Second arg is file name of change log. If nil, uses `change-log-default-name'.
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Third arg OTHER-WINDOW non-nil means visit in other window."
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(interactive (list current-prefix-arg
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(prompt-for-change-log-name)))
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(let* ((full-name (if whoami
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(read-input "Full name: " (user-full-name))
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(user-full-name)))
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;; Note that some sites have room and phone number fields in
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;; full name which look silly when inserted. Rather than do
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;; anything about that here, let user give prefix argument so that
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;; s/he can edit the full name field in prompter if s/he wants.
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(login-name (if whoami
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(read-input "Login name: " (user-login-name))
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(user-login-name)))
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(site-name (if whoami
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(read-input "Site name: " (system-name))
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(system-name)))
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(defun (add-log-current-defun))
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paragraph-end entry)
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(setq file-name (find-change-log file-name))
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;; Set ENTRY to the file name to use in the new entry.
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(and buffer-file-name
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;; Never want to add a change log entry for the ChangeLog file itself.
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(not (string= buffer-file-name file-name))
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(setq entry (if (string-match
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(concat "^" (regexp-quote (file-name-directory
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file-name)))
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buffer-file-name)
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(substring buffer-file-name (match-end 0))
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(file-name-nondirectory buffer-file-name))))
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(if (and other-window (not (equal file-name buffer-file-name)))
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(find-file-other-window file-name)
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(find-file file-name))
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(undo-boundary)
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(goto-char (point-min))
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(if (looking-at (concat (regexp-quote (substring (current-time-string)
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0 10))
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".* " (regexp-quote full-name)
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" (" (regexp-quote login-name) "@"))
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(forward-line 1)
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(insert (current-time-string)
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" " full-name
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" (" login-name "@" site-name ")\n\n"))
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;; Search only within the first paragraph.
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(if (looking-at "\n*[^\n* \t]")
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(skip-chars-forward "\n")
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(forward-paragraph 1))
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(setq paragraph-end (point))
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(goto-char (point-min))
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;; Now insert the new line for this entry.
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(cond ((re-search-forward "^\\s *\\*\\s *$" paragraph-end t)
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;; Put this file name into the existing empty entry.
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(if entry
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(insert entry)))
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((and (re-search-forward
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(concat (regexp-quote (concat "* " entry))
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;; Don't accept `foo.bar' when
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;; looking for `foo':
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"\\(\\s \\|[(),:]\\)")
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paragraph-end t))
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;; Add to the existing entry for the same file.
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(re-search-forward "^\\s *$\\|^\\s \\*")
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(beginning-of-line)
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(while (and (not (eobp)) (looking-at "^\\s *$"))
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(delete-region (point) (save-excursion (forward-line 1) (point))))
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(insert "\n\n")
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(forward-line -2)
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(indent-relative-maybe))
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(t
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;; Make a new entry.
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(forward-line 1)
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(while (looking-at "\\sW")
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(forward-line 1))
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(while (and (not (eobp)) (looking-at "^\\s *$"))
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(delete-region (point) (save-excursion (forward-line 1) (point))))
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(insert "\n\n\n")
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(forward-line -2)
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(indent-to left-margin)
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(insert "* " (or entry ""))))
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;; Now insert the function name, if we have one.
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;; Point is at the entry for this file,
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;; either at the end of the line or at the first blank line.
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(if defun
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(progn
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;; Make it easy to get rid of the function name.
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(undo-boundary)
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(insert (if (save-excursion
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(beginning-of-line 1)
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(looking-at "\\s *$"))
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""
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" ")
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"(" defun "): "))
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;; No function name, so put in a colon unless we have just a star.
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(if (not (save-excursion
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(beginning-of-line 1)
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(looking-at "\\s *\\(\\*\\s *\\)?$")))
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(insert ": ")))))
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;;;###autoload
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(defun add-change-log-entry-other-window (&optional whoami file-name)
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"Find change log file in other window and add an entry for today.
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First arg (interactive prefix) non-nil means prompt for user name and site.
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Second arg is file name of change log.
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Interactively, with a prefix argument, the file name is prompted for."
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(interactive (if current-prefix-arg
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(list current-prefix-arg
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(prompt-for-change-log-name))))
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(add-change-log-entry whoami file-name t))
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;;;###autoload (define-key ctl-x-4-map "a" 'add-change-log-entry-other-window)
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;;;###autoload
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(defun change-log-mode ()
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"Major mode for editting change logs; like Indented Text Mode.
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Prevents numeric backups and sets `left-margin' to 8 and `fill-column' to 74.
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New log entries are usually made with \\[add-change-log-entry] or \\[add-change-log-entry-other-window].
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Each entry behaves as a paragraph, and the entries for one day as a page.
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Runs `change-log-mode-hook'."
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(interactive)
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(kill-all-local-variables)
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(indented-text-mode)
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(setq major-mode 'change-log-mode
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mode-name "Change Log"
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left-margin 8
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fill-column 74)
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;; Let each entry behave as one paragraph:
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(set (make-local-variable 'paragraph-start) "^\\s *$\\|^^L")
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(set (make-local-variable 'paragraph-separate) "^\\s *$\\|^^L\\|^\\sw")
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;; Let all entries for one day behave as one page.
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;; Match null string on the date-line so that the date-line
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;; is grouped with what follows.
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(set (make-local-variable 'page-delimiter) "^\\<\\|^ ")
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(set (make-local-variable 'version-control) 'never)
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(set (make-local-variable 'adaptive-fill-regexp) "\\s *")
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(run-hooks 'change-log-mode-hook))
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(defvar add-log-current-defun-header-regexp
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"^\\([A-Z][A-Z_ ]*[A-Z_]\\|[a-z_---A-Z]+\\)[ \t]*[:=]"
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"*Heuristic regexp used by `add-log-current-defun' for unknown major modes.")
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(defun add-log-current-defun ()
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"Return name of function definition point is in, or nil.
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Understands C, Lisp, LaTeX (\"functions\" are chapters, sections, ...),
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Texinfo (@node titles), and Fortran.
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Other modes are handled by a heuristic that looks in the 10K before
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point for uppercase headings starting in the first column or
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identifiers followed by `:' or `=', see variable
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`add-log-current-defun-header-regexp'.
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Has a preference of looking backwards."
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(condition-case nil
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(save-excursion
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(let ((location (point)))
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(cond ((memq major-mode '(emacs-lisp-mode lisp-mode scheme-mode))
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;; If we are now precisely a the beginning of a defun,
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;; make sure beginning-of-defun finds that one
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;; rather than the previous one.
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(or (eobp) (forward-char 1))
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(beginning-of-defun)
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;; Make sure we are really inside the defun found, not after it.
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(if (and (progn (end-of-defun)
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(< location (point)))
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(progn (forward-sexp -1)
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(>= location (point))))
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(progn
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(forward-word 1)
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(skip-chars-forward " ")
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(buffer-substring (point)
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(progn (forward-sexp 1) (point))))))
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((and (memq major-mode '(c-mode 'c++-mode))
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(save-excursion (beginning-of-line)
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;; Use eq instead of = here to avoid
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;; error when at bob and char-after
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;; returns nil.
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(while (eq (char-after (- (point) 2)) ?\\)
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(forward-line -1))
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(looking-at "[ \t]*#[ \t]*define[ \t]")))
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;; Handle a C macro definition.
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(beginning-of-line)
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(while (eq (char-after (- (point) 2)) ?\\) ;not =; note above
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(forward-line -1))
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(search-forward "define")
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(skip-chars-forward " \t")
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(buffer-substring (point)
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(progn (forward-sexp 1) (point))))
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((memq major-mode '(c-mode 'c++-mode))
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(beginning-of-line)
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;; See if we are in the beginning part of a function,
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;; before the open brace. If so, advance forward.
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(while (not (looking-at "{\\|\\(\\s *$\\)"))
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(forward-line 1))
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(or (eobp)
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(forward-char 1))
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(beginning-of-defun)
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(if (progn (end-of-defun)
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(< location (point)))
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(progn
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(backward-sexp 1)
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(let (beg tem)
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(forward-line -1)
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;; Skip back over typedefs of arglist.
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(while (and (not (bobp))
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(looking-at "[ \t\n]"))
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(forward-line -1))
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;; See if this is using the DEFUN macro used in Emacs,
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;; or the DEFUN macro used by the C library.
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(if (condition-case nil
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(and (save-excursion
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(forward-line 1)
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(backward-sexp 1)
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(beginning-of-line)
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(setq tem (point))
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(looking-at "DEFUN\\b"))
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(>= location tem))
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(error nil))
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(progn
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(goto-char tem)
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(down-list 1)
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(if (= (char-after (point)) ?\")
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(progn
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(forward-sexp 1)
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(skip-chars-forward " ,")))
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(buffer-substring (point)
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(progn (forward-sexp 1) (point))))
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;; Ordinary C function syntax.
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(setq beg (point))
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(if (condition-case nil
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;; Protect against "Unbalanced parens" error.
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(progn
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(down-list 1) ; into arglist
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(backward-up-list 1)
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(skip-chars-backward " \t")
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t)
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(error nil))
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;; Verify initial pos was after
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;; real start of function.
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(if (and (save-excursion
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(goto-char beg)
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;; For this purpose, include the line
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;; that has the decl keywords. This
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;; may also include some of the
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;; comments before the function.
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(while (and (not (bobp))
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(save-excursion
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(forward-line -1)
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(looking-at "[^\n\f]")))
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(forward-line -1))
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(>= location (point)))
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;; Consistency check: going down and up
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;; shouldn't take us back before BEG.
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(> (point) beg))
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(buffer-substring (point)
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(progn (backward-sexp 1)
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(point))))))))))
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((memq major-mode
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'(TeX-mode plain-TeX-mode LaTeX-mode;; tex-mode.el
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plain-tex-mode latex-mode;; cmutex.el
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))
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(if (re-search-backward
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"\\\\\\(sub\\)*\\(section\\|paragraph\\|chapter\\)" nil t)
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(progn
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(goto-char (match-beginning 0))
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(buffer-substring (1+ (point));; without initial backslash
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(progn
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(end-of-line)
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(point))))))
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((eq major-mode 'texinfo-mode)
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(if (re-search-backward "^@node[ \t]+\\([^,]+\\)," nil t)
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(buffer-substring (match-beginning 1)
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(match-end 1))))
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((eq major-mode 'fortran-mode)
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;; must be inside function body for this to work
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(beginning-of-fortran-subprogram)
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(let ((case-fold-search t)) ; case-insensitive
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;; search for fortran subprogram start
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(if (re-search-forward
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"^[ \t]*\\(program\\|subroutine\\|function\
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\\|[ \ta-z0-9*]*[ \t]+function\\)"
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nil t)
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(progn
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;; move to EOL or before first left paren
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(if (re-search-forward "[(\n]" nil t)
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(progn (forward-char -1)
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(skip-chars-backward " \t"))
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(end-of-line))
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;; Use the name preceding that.
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(buffer-substring (point)
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(progn (forward-sexp -1)
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(point)))))))
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(t
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;; If all else fails, try heuristics
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(let (case-fold-search)
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(end-of-line)
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(if (re-search-backward add-log-current-defun-header-regexp
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(- (point) 10000)
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t)
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(buffer-substring (match-beginning 1)
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(match-end 1))))))))
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(error nil)))
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(provide 'add-log)
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;;; add-log.el ends here
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