;;; add-log.el --- change log maintenance commands for Emacs ;; Copyright (C) 1985, 1986, 1988, 1993 Free Software Foundation, Inc. ;; Keywords: maint ;; 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, 675 Mass Ave, Cambridge, MA 02139, USA. ;;; Commentary: ;; This facility is documented in the Emacs Manual. ;;; Code: ;;;###autoload (defvar change-log-default-name nil "*Name of a change log file for \\[add-change-log-entry].") ;;;###autoload (defvar add-log-current-defun-function nil "\ *If non-nil, function to guess name of current function from surrounding text. \\[add-change-log-entry] calls this function (if nil, `add-log-current-defun' instead) with no arguments. It returns a string or nil if it cannot guess.") (defun change-log-name () (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))) (expand-file-name (read-file-name (format "Log file (default %s): " default) nil default)))) ;;;###autoload (defun find-change-log (&optional file-name) "Find a change log file for \\[add-change-log-entry] and return the name. Optional arg FILE-NAME is a name to try first. If FILE-NAME is nil, use the value of `change-log-default-name' if non-nil. Failing that, use \"ChangeLog\" in the current directory. If the file does not exist in the named directory, successive parent directories are tried. Once a file is found, `change-log-default-name' is set locally in the current buffer to the complete file name." (or file-name (setq file-name (or change-log-default-name ;; Chase links in the source file ;; and use the change log in the dir where it points. (and buffer-file-name (file-name-directory (file-chase-links buffer-file-name))) default-directory))) (if (and (eq file-name change-log-default-name) (assq 'change-log-default-name (buffer-local-variables))) ;; Don't do the searching if we already have a buffer-local value. file-name (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 (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)) ;;;###autoload (defun add-change-log-entry (&optional whoami file-name other-window new-entry) "Find change log file and add an entry for today. Optional arg (interactive prefix) non-nil means prompt for user name and site. Second arg is file name of change log. If nil, uses `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." (interactive (list current-prefix-arg (prompt-for-change-log-name))) (let* ((full-name (if whoami (read-input "Full name: " (user-full-name)) (user-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. (login-name (if whoami (read-input "Login name: " (user-login-name)) (user-login-name))) (site-name (if whoami (read-input "Site name: " (system-name)) (system-name))) (defun (funcall (or add-log-current-defun-function 'add-log-current-defun))) paragraph-end entry) (setq file-name (find-change-log file-name)) ;; Set ENTRY to the file name to use in the new entry. (and buffer-file-name ;; Never want to add a change log entry for the ChangeLog file itself. (not (string= buffer-file-name file-name)) (setq entry (if (string-match (concat "^" (regexp-quote (file-name-directory file-name))) buffer-file-name) (substring buffer-file-name (match-end 0)) (file-name-nondirectory buffer-file-name)))) (if (and other-window (not (equal file-name buffer-file-name))) (find-file-other-window file-name) (find-file file-name)) (undo-boundary) (goto-char (point-min)) (if (looking-at (concat (regexp-quote (substring (current-time-string) 0 10)) ".* " (regexp-quote full-name) " (" (regexp-quote login-name) "@")) (forward-line 1) (insert (current-time-string) " " full-name " (" login-name "@" site-name ")\n\n")) ;; Search only within the first paragraph. (if (looking-at "\n*[^\n* \t]") (skip-chars-forward "\n") (forward-paragraph 1)) (setq paragraph-end (point)) (goto-char (point-min)) ;; Now insert the new line for this entry. (cond ((re-search-forward "^\\s *\\*\\s *$" paragraph-end t) ;; Put this file name into the existing empty entry. (if entry (insert entry))) ((and (not new-entry) (re-search-forward (concat (regexp-quote (concat "* " entry)) ;; Don't accept `foo.bar' when ;; looking for `foo': "\\(\\s \\|[(),:]\\)") paragraph-end t)) ;; Add to the existing entry for the same file. (re-search-forward "^\\s *$\\|^\\s \\*") (beginning-of-line) (while (and (not (eobp)) (looking-at "^\\s *$")) (delete-region (point) (save-excursion (forward-line 1) (point)))) (insert "\n\n") (forward-line -2) (indent-relative-maybe)) (t ;; Make a new entry. (forward-line 1) (while (looking-at "\\sW") (forward-line 1)) (while (and (not (eobp)) (looking-at "^\\s *$")) (delete-region (point) (save-excursion (forward-line 1) (point)))) (insert "\n\n\n") (forward-line -2) (indent-to left-margin) (insert "* " (or entry "")))) ;; Now insert the function name, if we have one. ;; Point is at the entry 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) (insert (if (save-excursion (beginning-of-line 1) (looking-at "\\s *$")) "" " ") "(" defun "): ")) ;; No function name, so put in a colon unless we have just a star. (if (not (save-excursion (beginning-of-line 1) (looking-at "\\s *\\(\\*\\s *\\)?$"))) (insert ": "))))) ;;;###autoload (defun add-change-log-entry-other-window (&optional whoami file-name) "Find change log file in other window and add an entry for today. Optional arg (interactive prefix) non-nil means prompt for user name and site. Second arg is file name of change log. \ If nil, uses `change-log-default-name'." (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 (defun change-log-mode () "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'." (interactive) (kill-all-local-variables) (indented-text-mode) (setq major-mode 'change-log-mode mode-name "Change Log" left-margin 8 fill-column 74) (use-local-map change-log-mode-map) ;; Let each entry behave as one paragraph: (set (make-local-variable 'paragraph-start) "^\\s *$\\|^^L") (set (make-local-variable 'paragraph-separate) "^\\s *$\\|^^L\\|^\\sw") ;; Let all entries for one day behave as one page. ;; Match null string on the date-line so that the date-line ;; is grouped with what follows. (set (make-local-variable 'page-delimiter) "^\\<\\|^ ") (set (make-local-variable 'version-control) 'never) (set (make-local-variable 'adaptive-fill-regexp) "\\s *") (run-hooks 'change-log-mode-hook)) (defvar change-log-mode-map nil "Keymap for Change Log major mode.") (if change-log-mode-map nil (setq change-log-mode-map (make-sparse-keymap)) (define-key change-log-mode-map "\M-q" 'change-log-fill-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 ((paragraph-separate (concat paragraph-separate "\\|^\\s *\\s(")) (paragraph-start (concat paragraph-start "\\|^\\s *\\s("))) (fill-paragraph justify))) (defvar add-log-current-defun-header-regexp "^\\([A-Z][A-Z_ ]*[A-Z_]\\|[a-z_---A-Z]+\\)[ \t]*[:=]" "*Heuristic regexp used by `add-log-current-defun' for unknown major modes.") (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 Fortran. 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 variable `add-log-current-defun-header-regexp'. Has a preference of looking backwards." (condition-case nil (save-excursion (let ((location (point))) (cond ((memq major-mode '(emacs-lisp-mode lisp-mode scheme-mode)) ;; If we are now precisely a 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. (if (and (progn (end-of-defun) (< location (point))) (progn (forward-sexp -1) (>= location (point)))) (progn (if (looking-at "\\s(") (forward-char 1)) (forward-sexp 1) (skip-chars-forward " ") (buffer-substring (point) (progn (forward-sexp 1) (point)))))) ((and (memq major-mode '(c-mode 'c++-mode)) (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 (point) (progn (forward-sexp 1) (point)))) ((memq major-mode '(c-mode 'c++-mode)) (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) (if (progn (end-of-defun) (< location (point))) (progn (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 (forward-line 1) (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 (point) (progn (forward-sexp 1) (point)))) ;; Ordinary C function syntax. (setq beg (point)) (if (condition-case nil ;; Protect against "Unbalanced parens" error. (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. (if (and (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)) (buffer-substring (point) (progn (backward-sexp 1) (point)))))))))) ((memq major-mode '(TeX-mode plain-TeX-mode LaTeX-mode;; tex-mode.el plain-tex-mode latex-mode;; cmutex.el )) (if (re-search-backward "\\\\\\(sub\\)*\\(section\\|paragraph\\|chapter\\)" nil t) (progn (goto-char (match-beginning 0)) (buffer-substring (1+ (point));; without initial backslash (progn (end-of-line) (point)))))) ((eq major-mode 'texinfo-mode) (if (re-search-backward "^@node[ \t]+\\([^,]+\\)," nil t) (buffer-substring (match-beginning 1) (match-end 1)))) ((eq major-mode 'fortran-mode) ;; must be inside function body for this to work (beginning-of-fortran-subprogram) (let ((case-fold-search t)) ; case-insensitive ;; search for fortran subprogram start (if (re-search-forward "^[ \t]*\\(program\\|subroutine\\|function\ \\|[ \ta-z0-9*]*[ \t]+function\\)" nil t) (progn ;; move to EOL or before first left paren (if (re-search-forward "[(\n]" nil t) (progn (forward-char -1) (skip-chars-backward " \t")) (end-of-line)) ;; Use the name preceding that. (buffer-substring (point) (progn (forward-sexp -1) (point))))))) (t ;; If all else fails, try heuristics (let (case-fold-search) (end-of-line) (if (re-search-backward add-log-current-defun-header-regexp (- (point) 10000) t) (buffer-substring (match-beginning 1) (match-end 1)))))))) (error nil))) (provide 'add-log) ;;; add-log.el ends here