lisp/textmodes/bib-mode.el

   1 ;;; bib-mode.el --- major mode for editing bib files
   2
   3 ;; Copyright (C) 1989 Free Software Foundation, Inc.
   4
   5 ;; Maintainer: FSF
   6 ;; Keywords: bib
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software; you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation; either version 2, or (at your option)
  13 ;; any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23 ;; Boston, MA 02111-1307, USA.
  24
  25 ;;; Commentary:
  26
  27 ;;   GNU Emacs code to help maintain databases compatible with (troff)
  28 ;;   refer and lookbib.  The file bib-file should be set to your
  29 ;;   bibliography file.  Keys are automagically inserted as you type,
  30 ;;   and appropriate keys are presented for various kinds of entries.
  31
  32 ;;; Code:
  33
  34 (defgroup bib nil
  35   "Major mode for editing bib files."
  36   :prefix "bib-"
  37   :group 'wp)
  38
  39 (defcustom bib-file "~/my-bibliography.bib"
  40   "Default name of file used by `addbib'."
  41     :type 'file
  42     :group 'bib)
  43
  44 (defcustom unread-bib-file "~/to-be-read.bib"
  45    "Default name of file used by `unread-bib' in Bib mode."
  46    :type 'file
  47    :group 'bib)
  48
  49 (defvar bib-mode-map (copy-keymap text-mode-map))
  50 (define-key bib-mode-map "\C-M" 'return-key-bib)
  51 (define-key bib-mode-map "\C-c\C-u" 'unread-bib)
  52 (define-key bib-mode-map "\C-c\C-@" 'mark-bib)
  53 (define-key bib-mode-map "\e`" 'abbrev-mode)
  54
  55 (defun addbib ()
  56    "Set up editor to add to troff bibliography file specified
  57 by global variable `bib-file'.  See description of `bib-mode'."
  58    (interactive)
  59    (find-file bib-file)
  60    (goto-char (point-max))
  61    (bib-mode)
  62    )
  63
  64 (define-derived-mode bib-mode text-mode "Bib"
  65    "Mode for editing `lookbib' style bibliographies.
  66 Hit RETURN to get next % field key.
  67 If you want to ignore this field, just hit RETURN again.
  68 Use `text-mode' to turn this feature off.
  69
  70  journal papers:                    A* T D J V N P K W X
  71  articles in books & proceedings:   A* T D B E* I C P K W X
  72  tech reports:                      A* T D R I C K W X
  73  books:                             A* T D I C K W X
  74
  75 Fields:
  76
  77 A uthor         T itle          D ate           J ournal
  78 V olume         N umber         P age           K eywords
  79 B in book or proceedings        E ditor         C ity & state
  80 I nstitution, school, or publisher
  81 R eport number or 'phd thesis' or 'masters thesis' or 'draft' or
  82      'unnumbered' or 'unpublished'
  83 W here can be found locally (login name, or ailib, etc.)
  84 X comments (not used in indexing)
  85
  86 \\[unread-bib] appends current entry to a different file (for example,
  87 a file of papers to be read in the future), given by the value of the
  88 variable `unread-bib-file'.
  89 \\[mark-bib] marks current or previous entry.
  90 Abbreviations are saved in `bib-mode-abbrev-table'.
  91 Hook can be stored in `bib-mode-hook'.
  92 Field keys given by variable `bib-assoc'.
  93
  94 Commands:
  95 \\{bib-mode-map}"
  96    (abbrev-mode 1))
  97
  98 (defconst bib-assoc
  99   '((" *$" . "%A ")
 100     ("%A ." . "%A ")
 101     ("%A $" . "%T ")
 102     ("%T " . "%D ")
 103     ("%D " . "%J ")
 104     ("%J ." . "%V ")
 105     ("%V " . "%N ")
 106     ("%N " . "%P ")
 107     ("%P " . "%K ")
 108     ("%K " . "%W ")
 109     ("%W " . "%X ")
 110     ("%X " . "")
 111     ("%J $" . "%B ")
 112     ("%B ." . "%E ")
 113     ("%E ." . "%E ")
 114     ("%E $" . "%I ")
 115     ("%I " . "%C ")
 116     ("%C " . "%P ")
 117     ("%B $" . "%R ")
 118     ("%R " . "%I "))
 119   "Describes bibliographic database format.
 120 A line beginning with the car of an entry is followed by one beginning
 121 with the cdr.")
 122
 123 (defun bib-find-key (slots)
 124    (cond
 125       ((null slots)
 126          (if (bobp)
 127             ""
 128             (progn (previous-line 1) (bib-find-key bib-assoc))))
 129       ((looking-at (car (car slots)))
 130          (cdr (car slots)))
 131       (t (bib-find-key (cdr slots)))
 132       ))
 133
 134
 135 (defcustom bib-auto-capitalize t
 136   "*True to automatically capitalize appropriate fields in Bib mode."
 137   :type 'boolean
 138   :group 'bib)
 139
 140 (defconst bib-capitalized-fields "%[AETCBIJR]")
 141
 142 (defun return-key-bib ()
 143   "Magic when user hits return, used by `bib-mode'."
 144   (interactive)
 145   (if (eolp)
 146     (let (empty new-key beg-current end-current)
 147       (beginning-of-line)
 148       (setq empty (looking-at "%. $"))
 149       (if (not empty)
 150         (progn
 151           (end-of-line)
 152           (newline)
 153           (forward-line -1)
 154           ))
 155       (end-of-line)
 156       (setq end-current (point))
 157       (beginning-of-line)
 158       (setq beg-current (point))
 159       (setq new-key (bib-find-key bib-assoc))
 160       (if (and (not empty) bib-auto-capitalize
 161             (looking-at bib-capitalized-fields))
 162         (save-excursion
 163           (bib-capitalize-title-region (+ (point) 3) end-current)))
 164       (goto-char beg-current)
 165       (if empty
 166         (kill-line nil)
 167         (forward-line 1)
 168         )
 169       (insert new-key))
 170     (newline)))
 171
 172 (defun mark-bib ()
 173    "Set mark at beginning of current or previous bib entry, point at end."
 174    (interactive)
 175    (beginning-of-line nil)
 176    (if (looking-at "^ *$") (re-search-backward "[^ \n]" nil 2))
 177    (re-search-backward "^ *$" nil 2)
 178    (re-search-forward "^%")
 179    (beginning-of-line nil)
 180    (push-mark (point))
 181    (re-search-forward "^ *$" nil 2)
 182    (next-line 1)
 183    (beginning-of-line nil))
 184
 185 (defun unread-bib ()
 186    "Append current or previous entry to file of unread papers
 187 named by variable `unread-bib-file'."
 188    (interactive)
 189    (mark-bib)
 190    (if (get-file-buffer unread-bib-file)
 191       (append-to-buffer (get-file-buffer unread-bib-file) (mark) (point))
 192       (append-to-file (mark) (point) unread-bib-file)))
 193
 194
 195 (defvar bib-capitalize-title-stop-words
 196    (concat
 197       "the\\|and\\|of\\|is\\|a\\|an\\|of\\|for\\|in\\|to\\|in\\|on\\|at\\|"
 198       "by\\|with\\|that\\|its")
 199    "Words not to be capitalized in a title (unless the first word).")
 200
 201 (defvar bib-capitalize-title-stop-regexp
 202    (concat "\\(" bib-capitalize-title-stop-words "\\)\\(\\b\\|'\\)"))
 203
 204 (defun bib-capitalize-title-region (begin end)
 205    "Like `capitalize-region', but don't capitalize stop words, except the first."
 206    (interactive "r")
 207    (let ((case-fold-search nil) (orig-syntax-table (syntax-table)))
 208       (unwind-protect
 209          (save-restriction
 210             (set-syntax-table text-mode-syntax-table)
 211             (narrow-to-region begin end)
 212             (goto-char (point-min))
 213             (if (looking-at "[A-Z][a-z]*[A-Z]")
 214                (forward-word 1)
 215                (capitalize-word 1))
 216             (while (re-search-forward "\\<" nil t)
 217                (if (looking-at "[A-Z][a-z]*[A-Z]")
 218                   (forward-word 1)
 219                   (if (let ((case-fold-search t))
 220                          (looking-at bib-capitalize-title-stop-regexp))
 221                      (downcase-word 1)
 222                      (capitalize-word 1)))
 223                ))
 224          (set-syntax-table orig-syntax-table))))
 225
 226
 227 (defun bib-capitalize-title (s)
 228    "Like `capitalize', but don't capitalize stop words, except the first."
 229    (save-excursion
 230       (set-buffer (get-buffer-create "$$$Scratch$$$"))
 231       (erase-buffer)
 232       (insert s)
 233       (bib-capitalize-title-region (point-min) (point-max))
 234       (buffer-string)))
 235
 236 (provide 'bib-mode)
 237
 238 ;;; bib-mode.el ends here