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emacs/lisp/add-log.el
Stefan Monnier ed09af61b0 (change-log-mode): Set indent-line-function explicitly 
to what it was before indent-line-function's default was changed.
2002-12-02 16:09:02 +00:00

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;;; add-log.el --- change log maintenance commands for Emacs
;; Copyright (C) 1985, 86, 88, 93, 94, 97, 98, 2000 Free Software Foundation, Inc.
;; Maintainer: FSF
;; Keywords: tools
;; 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.
;;; Commentary:
;; This facility is documented in the Emacs Manual.
;;; Code:
(eval-when-compile
(require 'timezone))
(defgroup change-log nil
"Change log maintenance"
:group 'tools
:link '(custom-manual "(emacs)Change Log")
:prefix "change-log-"
:prefix "add-log-")
(defcustom change-log-default-name nil
"*Name of a change log file for \\[add-change-log-entry]."
:type '(choice (const :tag "default" nil)
string)
:group 'change-log)
(defcustom change-log-mode-hook nil
"Normal hook run by `change-log-mode'."
:type 'hook
:group 'change-log)
(defcustom add-log-current-defun-function nil
"*If non-nil, function to guess name of surrounding function.
It is used by `add-log-current-defun' in preference to built-in rules.
Returns function's name as a string, or nil if outside a function."
:type '(choice (const nil) function)
:group 'change-log)
;;;###autoload
(defcustom add-log-full-name nil
"*Full name of user, for inclusion in ChangeLog daily headers.
This defaults to the value returned by the function `user-full-name'."
:type '(choice (const :tag "Default" nil)
string)
:group 'change-log)
;;;###autoload
(defcustom add-log-mailing-address nil
"*Electronic mail addresses of user, for inclusion in ChangeLog headers.
This defaults to the value of `user-mail-address'. In addition to
being a simple string, this value can also be a list. All elements
will be recognized as referring to the same user; when creating a new
ChangeLog entry, one element will be chosen at random."
:type '(choice (const :tag "Default" nil)
(string :tag "String")
(repeat :tag "List of Strings" string))
:group 'change-log)
(defcustom add-log-time-format 'add-log-iso8601-time-string
"*Function that defines the time format.
For example, `add-log-iso8601-time-string', which gives the
date in international ISO 8601 format,
and `current-time-string' are two valid values."
:type '(radio (const :tag "International ISO 8601 format"
add-log-iso8601-time-string)
(const :tag "Old format, as returned by `current-time-string'"
current-time-string)
(function :tag "Other"))
:group 'change-log)
(defcustom add-log-keep-changes-together nil
"*If non-nil, normally keep day's log entries for one file together.
Log entries for a given file made with \\[add-change-log-entry] or
\\[add-change-log-entry-other-window] will only be added to others \
for that file made
today if this variable is non-nil or that file comes first in today's
entries. Otherwise another entry for that file will be started. An
original log:
* foo (...): ...
* bar (...): change 1
in the latter case, \\[add-change-log-entry-other-window] in a \
buffer visiting `bar', yields:
* bar (...): -!-
* foo (...): ...
* bar (...): change 1
and in the former:
* foo (...): ...
* bar (...): change 1
(...): -!-
The NEW-ENTRY arg to `add-change-log-entry' can override the effect of
this variable."
:version "20.3"
:type 'boolean
:group 'change-log)
(defcustom add-log-always-start-new-record nil
"*If non-nil, `add-change-log-entry' will always start a new record."
:version "21.4"
:type 'boolean
:group 'change-log)
(defcustom add-log-buffer-file-name-function nil
"*If non-nil, function to call to identify the full filename of a buffer.
This function is called with no argument. If this is nil, the default is to
use `buffer-file-name'."
:type '(choice (const nil) function)
:group 'change-log)
(defcustom add-log-file-name-function nil
"*If non-nil, function to call to identify the filename for a ChangeLog entry.
This function is called with one argument, the value of variable
`buffer-file-name' in that buffer. If this is nil, the default is to
use the file's name relative to the directory of the change log file."
:type '(choice (const nil) function)
:group 'change-log)
(defcustom change-log-version-info-enabled nil
"*If non-nil, enable recording version numbers with the changes."
:version "21.1"
:type 'boolean
:group 'change-log)
(defcustom change-log-version-number-regexp-list
(let ((re "\\([0-9]+\.[0-9.]+\\)"))
(list
;; (defconst ad-version "2.15"
(concat "^(def[^ \t\n]+[ \t]+[^ \t\n][ \t]\"" re)
;; Revision: pcl-cvs.el,v 1.72 1999/09/05 20:21:54 monnier Exp
(concat "^;+ *Revision: +[^ \t\n]+[ \t]+" re)))
"*List of regexps to search for version number.
The version number must be in group 1.
Note: The search is conducted only within 10%, at the beginning of the file."
:version "21.1"
:type '(repeat regexp)
:group 'change-log)
(defface change-log-date-face
'((t (:inherit font-lock-string-face)))
"Face used to highlight dates in date lines."
:version "21.1"
:group 'change-log)
(defface change-log-name-face
'((t (:inherit font-lock-constant-face)))
"Face for highlighting author names."
:version "21.1"
:group 'change-log)
(defface change-log-email-face
'((t (:inherit font-lock-variable-name-face)))
"Face for highlighting author email addresses."
:version "21.1"
:group 'change-log)
(defface change-log-file-face
'((t (:inherit font-lock-function-name-face)))
"Face for highlighting file names."
:version "21.1"
:group 'change-log)
(defface change-log-list-face
'((t (:inherit font-lock-keyword-face)))
"Face for highlighting parenthesized lists of functions or variables."
:version "21.1"
:group 'change-log)
(defface change-log-conditionals-face
'((t (:inherit font-lock-variable-name-face)))
"Face for highlighting conditionals of the form `[...]'."
:version "21.1"
:group 'change-log)
(defface change-log-function-face
'((t (:inherit font-lock-variable-name-face)))
"Face for highlighting items of the form `<....>'."
:version "21.1"
:group 'change-log)
(defface change-log-acknowledgement-face
'((t (:inherit font-lock-comment-face)))
"Face for highlighting acknowledgments."
:version "21.1"
:group 'change-log)
(defvar change-log-font-lock-keywords
'(;;
;; Date lines, new and old styles.
("^\\sw.........[0-9:+ ]*"
(0 'change-log-date-face)
;; Name and e-mail; some people put e-mail in parens, not angles.
("\\([^<(]+?\\)[ \t]*[(<]\\([A-Za-z0-9_.-]+@[A-Za-z0-9_.-]+\\)[>)]" nil nil
(1 'change-log-name-face)
(2 'change-log-email-face)))
;;
;; File names.
("^\t\\* \\([^ ,:([\n]+\\)"
(1 'change-log-file-face)
;; Possibly further names in a list:
("\\=, \\([^ ,:([\n]+\\)" nil nil (1 'change-log-file-face))
;; Possibly a parenthesized list of names:
("\\= (\\([^) ,:\n]+\\)" nil nil (1 'change-log-list-face))
("\\=, *\\([^) ,:\n]+\\)" nil nil (1 'change-log-list-face)))
;;
;; Function or variable names.
("^\t(\\([^) ,:\n]+\\)"
(1 'change-log-list-face)
("\\=, *\\([^) ,:\n]+\\)" nil nil (1 'change-log-list-face)))
;;
;; Conditionals.
("\\[!?\\([^]\n]+\\)\\]\\(:\\| (\\)" (1 'change-log-conditionals-face))
;;
;; Function of change.
("<\\([^>\n]+\\)>\\(:\\| (\\)" (1 'change-log-function-face))
;;
;; Acknowledgements.
("\\(^\t\\| \\)\\(From\\|Patch\\(es\\)? by\\|Report\\(ed by\\| from\\)\\|Suggest\\(ed by\\|ion from\\)\\)"
2 'change-log-acknowledgement-face))
"Additional expressions to highlight in Change Log mode.")
(defvar change-log-mode-map (make-sparse-keymap)
"Keymap for Change Log major mode.")
(defvar change-log-time-zone-rule nil
"Time zone used for calculating change log time stamps.
It takes the same format as the TZ argument of `set-time-zone-rule'.
If nil, use local time.")
(defun add-log-iso8601-time-zone (time)
(let* ((utc-offset (or (car (current-time-zone time)) 0))
(sign (if (< utc-offset 0) ?- ?+))
(sec (abs utc-offset))
(ss (% sec 60))
(min (/ sec 60))
(mm (% min 60))
(hh (/ min 60)))
(format (cond ((not (zerop ss)) "%c%02d:%02d:%02d")
((not (zerop mm)) "%c%02d:%02d")
(t "%c%02d"))
sign hh mm ss)))
(defun add-log-iso8601-time-string ()
(if change-log-time-zone-rule
(let ((tz (getenv "TZ"))
(now (current-time)))
(unwind-protect
(progn
(set-time-zone-rule change-log-time-zone-rule)
(concat
(format-time-string "%Y-%m-%d " now)
(add-log-iso8601-time-zone now)))
(set-time-zone-rule tz)))
(format-time-string "%Y-%m-%d")))
(defun change-log-name ()
"Return (system-dependent) default name for a change log file."
(or change-log-default-name
(if (eq system-type 'vax-vms)
"$CHANGE_LOG$.TXT"
"ChangeLog")))
;;;###autoload
(defun prompt-for-change-log-name ()
"Prompt for a change log name."
(let* ((default (change-log-name))
(name (expand-file-name
(read-file-name (format "Log file (default %s): " default)
nil default))))
;; Handle something that is syntactically a directory name.
;; Look for ChangeLog or whatever in that directory.
(if (string= (file-name-nondirectory name) "")
(expand-file-name (file-name-nondirectory default)
name)
;; Handle specifying a file that is a directory.
(if (file-directory-p name)
(expand-file-name (file-name-nondirectory default)
(file-name-as-directory name))
name))))
(defun change-log-version-number-search ()
"Return version number of current buffer's file.
This is the value returned by `vc-workfile-version' or, if that is
nil, by matching `change-log-version-number-regexp-list'."
(let* ((size (buffer-size))
(end
;; The version number can be anywhere in the file, but
;; restrict search to the file beginning: 10% should be
;; enough to prevent some mishits.
;;
;; Apply percentage only if buffer size is bigger than
;; approx 100 lines.
(if (> size (* 100 80))
(/ size 10)
size))
version)
(or (and buffer-file-name (vc-workfile-version buffer-file-name))
(save-restriction
(widen)
(let ((regexps change-log-version-number-regexp-list))
(while regexps
(save-excursion
(goto-char (point-min))
(when (re-search-forward (pop regexps) end t)
(setq version (match-string 1)
regexps nil)))))))))
;;;###autoload
(defun find-change-log (&optional file-name buffer-file)
"Find a change log file for \\[add-change-log-entry] and return the name.
Optional arg FILE-NAME specifies the file to use.
If FILE-NAME is nil, use the value of `change-log-default-name'.
If 'change-log-default-name' is nil, behave as though it were 'ChangeLog'
\(or whatever we use on this operating system).
If 'change-log-default-name' contains a leading directory component, then
simply find it in the current directory. Otherwise, search in the current
directory and its successive parents for a file so named.
Once a file is found, `change-log-default-name' is set locally in the
current buffer to the complete file name.
Optional arg BUFFER-FILE overrides `buffer-file-name'."
;; If user specified a file name or if this buffer knows which one to use,
;; just use that.
(or file-name
(setq file-name (and change-log-default-name
(file-name-directory change-log-default-name)
change-log-default-name))
(progn
;; Chase links in the source file
;; and use the change log in the dir where it points.
(setq file-name (or (and (or buffer-file buffer-file-name)
(file-name-directory
(file-chase-links
(or buffer-file buffer-file-name))))
default-directory))
(if (file-directory-p file-name)
(setq file-name (expand-file-name (change-log-name) file-name)))
;; Chase links before visiting the file.
;; This makes it easier to use a single change log file
;; for several related directories.
(setq file-name (file-chase-links file-name))
(setq file-name (expand-file-name file-name))
;; Move up in the dir hierarchy till we find a change log file.
(let ((file1 file-name)
parent-dir)
(while (and (not (or (get-file-buffer file1) (file-exists-p file1)))
(progn (setq parent-dir
(file-name-directory
(directory-file-name
(file-name-directory file1))))
;; Give up if we are already at the root dir.
(not (string= (file-name-directory file1)
parent-dir))))
;; Move up to the parent dir and try again.
(setq file1 (expand-file-name
(file-name-nondirectory (change-log-name))
parent-dir)))
;; If we found a change log in a parent, use that.
(if (or (get-file-buffer file1) (file-exists-p file1))
(setq file-name file1)))))
;; Make a local variable in this buffer so we needn't search again.
(set (make-local-variable 'change-log-default-name) file-name)
file-name)
(defun add-log-file-name (buffer-file log-file)
;; Never want to add a change log entry for the ChangeLog file itself.
(unless (or (null buffer-file) (string= buffer-file log-file))
(if add-log-file-name-function
(funcall add-log-file-name-function buffer-file)
(setq buffer-file
(if (string-match
(concat "^" (regexp-quote (file-name-directory log-file)))
buffer-file)
(substring buffer-file (match-end 0))
(file-name-nondirectory buffer-file)))
;; If we have a backup file, it's presumably because we're
;; comparing old and new versions (e.g. for deleted
;; functions) and we'll want to use the original name.
(if (backup-file-name-p buffer-file)
(file-name-sans-versions buffer-file)
buffer-file))))
;;;###autoload
(defun add-change-log-entry (&optional whoami file-name other-window new-entry)
"Find change log file, and add an entry for today and an item for this file.
Optional arg WHOAMI (interactive prefix) non-nil means prompt for user
name and site.
Second arg FILE-NAME is file name of the change log.
If nil, use the value of `change-log-default-name'.
Third arg OTHER-WINDOW non-nil means visit in other window.
Fourth arg NEW-ENTRY non-nil means always create a new entry at the front;
never append to an existing entry. Option `add-log-keep-changes-together'
otherwise affects whether a new entry is created.
Option `add-log-always-start-new-record' non-nil means always create a
new record, even when the last record was made on the same date and by
the same person.
The change log file can start with a copyright notice and a copying
permission notice. The first blank line indicates the end of these
notices.
Today's date is calculated according to `change-log-time-zone-rule' if
non-nil, otherwise in local time."
(interactive (list current-prefix-arg
(prompt-for-change-log-name)))
(or add-log-full-name
(setq add-log-full-name (user-full-name)))
(or add-log-mailing-address
(setq add-log-mailing-address user-mail-address))
(if whoami
(progn
(setq add-log-full-name (read-input "Full name: " add-log-full-name))
;; Note that some sites have room and phone number fields in
;; full name which look silly when inserted. Rather than do
;; anything about that here, let user give prefix argument so that
;; s/he can edit the full name field in prompter if s/he wants.
(setq add-log-mailing-address
(read-input "Mailing address: " add-log-mailing-address))))
(let* ((defun (add-log-current-defun))
(version (and change-log-version-info-enabled
(change-log-version-number-search)))
(buf-file-name (if add-log-buffer-file-name-function
(funcall add-log-buffer-file-name-function)
buffer-file-name))
(buffer-file (if buf-file-name (expand-file-name buf-file-name)))
(file-name (expand-file-name
(or file-name (find-change-log file-name buffer-file))))
;; Set ITEM to the file name to use in the new item.
(item (add-log-file-name buffer-file file-name))
bound)
(unless (equal file-name buffer-file-name)
(if (or other-window (window-dedicated-p (selected-window)))
(find-file-other-window file-name)
(find-file file-name)))
(or (eq major-mode 'change-log-mode)
(change-log-mode))
(undo-boundary)
(goto-char (point-min))
;; If file starts with a copyright and permission notice, skip them.
;; Assume they end at first blank line.
(when (looking-at "Copyright")
(search-forward "\n\n")
(skip-chars-forward "\n"))
;; Advance into first entry if it is usable; else make new one.
(let ((new-entries (mapcar (lambda (addr)
(concat (funcall add-log-time-format)
" " add-log-full-name
" <" addr ">"))
(if (consp add-log-mailing-address)
add-log-mailing-address
(list add-log-mailing-address)))))
(if (and (not add-log-always-start-new-record)
(let ((hit nil))
(dolist (entry new-entries hit)
(when (looking-at (regexp-quote entry))
(setq hit t)))))
(forward-line 1)
(insert (nth (random (length new-entries))
new-entries)
"\n\n")
(forward-line -1)))
;; Determine where we should stop searching for a usable
;; item to add to, within this entry.
(setq bound
(save-excursion
(if (looking-at "\n*[^\n* \t]")
(skip-chars-forward "\n")
(if add-log-keep-changes-together
(forward-page) ; page delimits entries for date
(forward-paragraph))) ; paragraph delimits entries for file
(point)))
;; Now insert the new line for this item.
(cond ((re-search-forward "^\\s *\\*\\s *$" bound t)
;; Put this file name into the existing empty item.
(if item
(insert item)))
((and (not new-entry)
(let (case-fold-search)
(re-search-forward
(concat (regexp-quote (concat "* " item))
;; Don't accept `foo.bar' when
;; looking for `foo':
"\\(\\s \\|[(),:]\\)")
bound t)))
;; Add to the existing item for the same file.
(re-search-forward "^\\s *$\\|^\\s \\*")
(goto-char (match-beginning 0))
;; Delete excess empty lines; make just 2.
(while (and (not (eobp)) (looking-at "^\\s *$"))
(delete-region (point) (line-beginning-position 2)))
(insert-char ?\n 2)
(forward-line -2)
(indent-relative-maybe))
(t
;; Make a new item.
(while (looking-at "\\sW")
(forward-line 1))
(while (and (not (eobp)) (looking-at "^\\s *$"))
(delete-region (point) (line-beginning-position 2)))
(insert-char ?\n 3)
(forward-line -2)
(indent-to left-margin)
(insert "* ")
(if item (insert item))))
;; Now insert the function name, if we have one.
;; Point is at the item for this file,
;; either at the end of the line or at the first blank line.
(if defun
(progn
;; Make it easy to get rid of the function name.
(undo-boundary)
(unless (save-excursion
(beginning-of-line 1)
(looking-at "\\s *$"))
(insert ?\ ))
;; See if the prev function name has a message yet or not.
;; If not, merge the two items.
(let ((pos (point-marker)))
(if (and (skip-syntax-backward " ")
(skip-chars-backward "):")
(looking-at "):")
(progn (delete-region (+ 1 (point)) (+ 2 (point))) t)
(> fill-column (+ (current-column) (length defun) 3)))
(progn (delete-region (point) pos)
(insert ", "))
(goto-char pos)
(insert "("))
(set-marker pos nil))
(insert defun "): ")
(if version
(insert version ?\ )))
;; No function name, so put in a colon unless we have just a star.
(unless (save-excursion
(beginning-of-line 1)
(looking-at "\\s *\\(\\*\\s *\\)?$"))
(insert ": ")
(if version (insert version ?\ ))))))
;;;###autoload
(defun add-change-log-entry-other-window (&optional whoami file-name)
"Find change log file in other window and add entry and item.
This is just like `add-change-log-entry' except that it displays
the change log file in another window."
(interactive (if current-prefix-arg
(list current-prefix-arg
(prompt-for-change-log-name))))
(add-change-log-entry whoami file-name t))
;;;###autoload (define-key ctl-x-4-map "a" 'add-change-log-entry-other-window)
;;;###autoload
(define-derived-mode change-log-mode text-mode "Change Log"
"Major mode for editing change logs; like Indented Text Mode.
Prevents numeric backups and sets `left-margin' to 8 and `fill-column' to 74.
New log entries are usually made with \\[add-change-log-entry] or \\[add-change-log-entry-other-window].
Each entry behaves as a paragraph, and the entries for one day as a page.
Runs `change-log-mode-hook'."
(setq left-margin 8
fill-column 74
indent-tabs-mode t
tab-width 8)
(set (make-local-variable 'fill-paragraph-function)
'change-log-fill-paragraph)
(set (make-local-variable 'indent-line-function) 'indent-to-left-margin)
;; We really do want "^" in paragraph-start below: it is only the
;; lines that begin at column 0 (despite the left-margin of 8) that
;; we are looking for. Adding `* ' allows eliding the blank line
;; between entries for different files.
(set (make-local-variable 'paragraph-start) "\\s *$\\|\f\\|^\\<")
(set (make-local-variable 'paragraph-separate) paragraph-start)
;; Match null string on the date-line so that the date-line
;; is grouped with what follows.
(set (make-local-variable 'page-delimiter) "^\\<\\|^\f")
(set (make-local-variable 'version-control) 'never)
(set (make-local-variable 'smerge-resolve-function)
'change-log-resolve-conflict)
(set (make-local-variable 'adaptive-fill-regexp) "\\s *")
(set (make-local-variable 'font-lock-defaults)
'(change-log-font-lock-keywords t nil nil backward-paragraph)))
;; It might be nice to have a general feature to replace this. The idea I
;; have is a variable giving a regexp matching text which should not be
;; moved from bol by filling. change-log-mode would set this to "^\\s *\\s(".
;; But I don't feel up to implementing that today.
(defun change-log-fill-paragraph (&optional justify)
"Fill the paragraph, but preserve open parentheses at beginning of lines.
Prefix arg means justify as well."
(interactive "P")
(let ((end (progn (forward-paragraph) (point)))
(beg (progn (backward-paragraph) (point)))
(paragraph-start (concat paragraph-start "\\|\\s *\\s(")))
(fill-region beg end justify)
t))
(defcustom add-log-current-defun-header-regexp
"^\\([[:upper:]][[:upper:]_ ]*[[:upper:]_]\\|[-_[:alpha:]]+\\)[ \t]*[:=]"
"*Heuristic regexp used by `add-log-current-defun' for unknown major modes."
:type 'regexp
:group 'change-log)
;;;###autoload
(defvar add-log-lisp-like-modes
'(emacs-lisp-mode lisp-mode scheme-mode dsssl-mode lisp-interaction-mode)
"*Modes that look like Lisp to `add-log-current-defun'.")
;;;###autoload
(defvar add-log-c-like-modes
'(c-mode c++-mode c++-c-mode objc-mode)
"*Modes that look like C to `add-log-current-defun'.")
;;;###autoload
(defvar add-log-tex-like-modes
'(TeX-mode plain-TeX-mode LaTeX-mode plain-tex-mode latex-mode)
"*Modes that look like TeX to `add-log-current-defun'.")
;;;###autoload
(defun add-log-current-defun ()
"Return name of function definition point is in, or nil.
Understands C, Lisp, LaTeX (\"functions\" are chapters, sections, ...),
Texinfo (@node titles) and Perl.
Other modes are handled by a heuristic that looks in the 10K before
point for uppercase headings starting in the first column or
identifiers followed by `:' or `='. See variables
`add-log-current-defun-header-regexp' and
`add-log-current-defun-function'.
Has a preference of looking backwards."
(condition-case nil
(save-excursion
(let ((location (point)))
(cond (add-log-current-defun-function
(funcall add-log-current-defun-function))
((memq major-mode add-log-lisp-like-modes)
;; If we are now precisely at the beginning of a defun,
;; make sure beginning-of-defun finds that one
;; rather than the previous one.
(or (eobp) (forward-char 1))
(beginning-of-defun)
;; Make sure we are really inside the defun found,
;; not after it.
(when (and (looking-at "\\s(")
(progn (end-of-defun)
(< location (point)))
(progn (forward-sexp -1)
(>= location (point))))
(if (looking-at "\\s(")
(forward-char 1))
;; Skip the defining construct name, typically "defun"
;; or "defvar".
(forward-sexp 1)
;; The second element is usually a symbol being defined.
;; If it is not, use the first symbol in it.
(skip-chars-forward " \t\n'(")
(buffer-substring-no-properties (point)
(progn (forward-sexp 1)
(point)))))
((and (memq major-mode add-log-c-like-modes)
(save-excursion
(beginning-of-line)
;; Use eq instead of = here to avoid
;; error when at bob and char-after
;; returns nil.
(while (eq (char-after (- (point) 2)) ?\\)
(forward-line -1))
(looking-at "[ \t]*#[ \t]*define[ \t]")))
;; Handle a C macro definition.
(beginning-of-line)
(while (eq (char-after (- (point) 2)) ?\\) ;not =; note above
(forward-line -1))
(search-forward "define")
(skip-chars-forward " \t")
(buffer-substring-no-properties (point)
(progn (forward-sexp 1)
(point))))
((memq major-mode add-log-c-like-modes)
(beginning-of-line)
;; See if we are in the beginning part of a function,
;; before the open brace. If so, advance forward.
(while (not (looking-at "{\\|\\(\\s *$\\)"))
(forward-line 1))
(or (eobp)
(forward-char 1))
(beginning-of-defun)
(when (progn (end-of-defun)
(< location (point)))
(backward-sexp 1)
(let (beg tem)
(forward-line -1)
;; Skip back over typedefs of arglist.
(while (and (not (bobp))
(looking-at "[ \t\n]"))
(forward-line -1))
;; See if this is using the DEFUN macro used in Emacs,
;; or the DEFUN macro used by the C library.
(if (condition-case nil
(and (save-excursion
(end-of-line)
(while (= (preceding-char) ?\\)
(end-of-line 2))
(backward-sexp 1)
(beginning-of-line)
(setq tem (point))
(looking-at "DEFUN\\b"))
(>= location tem))
(error nil))
(progn
(goto-char tem)
(down-list 1)
(if (= (char-after (point)) ?\")
(progn
(forward-sexp 1)
(skip-chars-forward " ,")))
(buffer-substring-no-properties
(point)
(progn (forward-sexp 1)
(point))))
(if (looking-at "^[+-]")
(change-log-get-method-definition)
;; Ordinary C function syntax.
(setq beg (point))
(if (and
;; Protect against "Unbalanced parens" error.
(condition-case nil
(progn
(down-list 1) ; into arglist
(backward-up-list 1)
(skip-chars-backward " \t")
t)
(error nil))
;; Verify initial pos was after
;; real start of function.
(save-excursion
(goto-char beg)
;; For this purpose, include the line
;; that has the decl keywords. This
;; may also include some of the
;; comments before the function.
(while (and (not (bobp))
(save-excursion
(forward-line -1)
(looking-at "[^\n\f]")))
(forward-line -1))
(>= location (point)))
;; Consistency check: going down and up
;; shouldn't take us back before BEG.
(> (point) beg))
(let (end middle)
;; Don't include any final whitespace
;; in the name we use.
(skip-chars-backward " \t\n")
(setq end (point))
(backward-sexp 1)
;; Now find the right beginning of the name.
;; Include certain keywords if they
;; precede the name.
(setq middle (point))
(forward-word -1)
;; Ignore these subparts of a class decl
;; and move back to the class name itself.
(while (looking-at "public \\|private ")
(skip-chars-backward " \t:")
(setq end (point))
(backward-sexp 1)
(setq middle (point))
(forward-word -1))
(and (bolp)
(looking-at
"enum \\|struct \\|union \\|class ")
(setq middle (point)))
(goto-char end)
(when (eq (preceding-char) ?=)
(forward-char -1)
(skip-chars-backward " \t")
(setq end (point)))
(buffer-substring-no-properties
middle end))))))))
((memq major-mode add-log-tex-like-modes)
(if (re-search-backward
"\\\\\\(sub\\)*\\(section\\|paragraph\\|chapter\\)"
nil t)
(progn
(goto-char (match-beginning 0))
(buffer-substring-no-properties
(1+ (point)) ; without initial backslash
(line-end-position)))))
((eq major-mode 'texinfo-mode)
(if (re-search-backward "^@node[ \t]+\\([^,\n]+\\)" nil t)
(match-string-no-properties 1)))
((memq major-mode '(perl-mode cperl-mode))
(if (re-search-backward "^sub[ \t]+\\([^ \t\n]+\\)" nil t)
(match-string-no-properties 1)))
;; Emacs's autoconf-mode installs its own
;; `add-log-current-defun-function'. This applies to
;; a different mode apparently for editing .m4
;; autoconf source.
((eq major-mode 'autoconf-mode)
(if (re-search-backward
"^\\(\\(m4_\\)?define\\|A._DEFUN\\)(\\[?\\([A-Za-z0-9_]+\\)" nil t)
(match-string-no-properties 3)))
(t
;; If all else fails, try heuristics
(let (case-fold-search
result)
(end-of-line)
(when (re-search-backward
add-log-current-defun-header-regexp
(- (point) 10000)
t)
(setq result (or (match-string-no-properties 1)
(match-string-no-properties 0)))
;; Strip whitespace away
(when (string-match "\\([^ \t\n\r\f].*[^ \t\n\r\f]\\)"
result)
(setq result (match-string-no-properties 1 result)))
result))))))
(error nil)))
(defvar change-log-get-method-definition-md)
;; Subroutine used within change-log-get-method-definition.
;; Add the last match in the buffer to the end of `md',
;; followed by the string END; move to the end of that match.
(defun change-log-get-method-definition-1 (end)
(setq change-log-get-method-definition-md
(concat change-log-get-method-definition-md
(match-string 1)
end))
(goto-char (match-end 0)))
(defun change-log-get-method-definition ()
"For objective C, return the method name if we are in a method."
(let ((change-log-get-method-definition-md "["))
(save-excursion
(if (re-search-backward "^@implementation\\s-*\\([A-Za-z_]*\\)" nil t)
(change-log-get-method-definition-1 " ")))
(save-excursion
(cond
((re-search-forward "^\\([-+]\\)[ \t\n\f\r]*\\(([^)]*)\\)?\\s-*" nil t)
(change-log-get-method-definition-1 "")
(while (not (looking-at "[{;]"))
(looking-at
"\\([A-Za-z_]*:?\\)\\s-*\\(([^)]*)\\)?[A-Za-z_]*[ \t\n\f\r]*")
(change-log-get-method-definition-1 ""))
(concat change-log-get-method-definition-md "]"))))))
(defun change-log-sortable-date-at ()
"Return date of log entry in a consistent form for sorting.
Point is assumed to be at the start of the entry."
(require 'timezone)
(if (looking-at "^\\sw.........[0-9:+ ]*")
(let ((date (match-string-no-properties 0)))
(if date
(if (string-match "\\(....\\)-\\(..\\)-\\(..\\)\\s-+" date)
(concat (match-string 1 date) (match-string 2 date)
(match-string 3 date))
(condition-case nil
(timezone-make-date-sortable date)
(error nil)))))
(error "Bad date")))
(defun change-log-resolve-conflict ()
"Function to be used in `smerge-resolve-function'."
(let ((buf (current-buffer)))
(with-temp-buffer
(insert-buffer-substring buf (match-beginning 1) (match-end 1))
(save-match-data (change-log-mode))
(let ((other-buf (current-buffer)))
(with-current-buffer buf
(save-excursion
(save-restriction
(narrow-to-region (match-beginning 0) (match-end 0))
(replace-match (match-string 3) t t)
(change-log-merge other-buf))))))))
;;;###autoload
(defun change-log-merge (other-log)
"Merge the contents of ChangeLog file OTHER-LOG with this buffer.
Both must be found in Change Log mode (since the merging depends on
the appropriate motion commands). OTHER-LOG can be either a file name
or a buffer.
Entries are inserted in chronological order. Both the current and
old-style time formats for entries are supported."
(interactive "*fLog file name to merge: ")
(if (not (eq major-mode 'change-log-mode))
(error "Not in Change Log mode"))
(let ((other-buf (if (bufferp other-log) other-log
(find-file-noselect other-log)))
(buf (current-buffer))
date1 start end)
(save-excursion
(goto-char (point-min))
(set-buffer other-buf)
(goto-char (point-min))
(if (not (eq major-mode 'change-log-mode))
(error "%s not found in Change Log mode" other-log))
;; Loop through all the entries in OTHER-LOG.
(while (not (eobp))
(setq date1 (change-log-sortable-date-at))
(setq start (point)
end (progn (forward-page) (point)))
;; Look for an entry in original buffer that isn't later.
(with-current-buffer buf
(while (and (not (eobp))
(string< date1 (change-log-sortable-date-at)))
(forward-page))
(if (not (eobp))
(insert-buffer-substring other-buf start end)
;; At the end of the original buffer, insert a newline to
;; separate entries and then the rest of the file being
;; merged.
(unless (or (bobp)
(and (= ?\n (char-before))
(or (<= (1- (point)) (point-min))
(= ?\n (char-before (1- (point)))))))
(insert "\n"))
;; Move to the end of it to terminate outer loop.
(with-current-buffer other-buf
(goto-char (point-max)))
(insert-buffer-substring other-buf start)))))))
;;;###autoload
(defun change-log-redate ()
"Fix any old-style date entries in the current log file to default format."
(interactive)
(require 'timezone)
(save-excursion
(goto-char (point-min))
(while (re-search-forward "^\\sw.........[0-9:+ ]*" nil t)
(unless (= 12 (- (match-end 0) (match-beginning 0)))
(let* ((date (save-match-data
(timezone-fix-time (match-string 0) nil nil)))
(zone (if (consp (aref date 6))
(nth 1 (aref date 6)))))
(replace-match (format-time-string
"%Y-%m-%d "
(encode-time (aref date 5)
(aref date 4)
(aref date 3)
(aref date 2)
(aref date 1)
(aref date 0)
zone))))))))
(provide 'add-log)
;;; add-log.el ends here
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