git.chise.org Git - elisp/gnus.git-/blob - texi/infohack.el

   1 ;;; infohack.el --- a hack to format info file.
   2 ;; Copyright (C)  2001  Free Software Foundation, Inc.
   3
   4 ;; Author: Shenghuo Zhu <zsh@cs.rochester.edu>
   5 ;; Keywords: info
   6
   7 ;; This file is part of GNU Emacs.
   8
   9 ;; GNU Emacs is free software; you can redistribute it and/or modify
  10 ;; it under the terms of the GNU General Public License as published by
  11 ;; the Free Software Foundation; either version 2, or (at your option)
  12 ;; any later version.
  13
  14 ;; GNU Emacs is distributed in the hope that it will be useful,
  15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 ;; GNU General Public License for more details.
  18
  19 ;; You should have received a copy of the GNU General Public License
  20 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  22 ;; Boston, MA 02111-1307, USA.
  23
  24 ;;; Commentary:
  25
  26 ;;; Code:
  27
  28 (let ((default-directory (expand-file-name "../lisp/")))
  29   ;; Adjust `load-path' for APEL.
  30   (load-file "dgnushack.el")
  31   ;; Replace "./" with "../lisp/" in `load-path'.
  32   (setq load-path (mapcar 'expand-file-name load-path)))
  33 (load-file (expand-file-name "ptexinfmt.el" "./"))
  34
  35 (defun infohack-remove-unsupported ()
  36   (goto-char (point-min))
  37   (while (re-search-forward "@\\(end \\)?ifnottex" nil t)
  38     (replace-match ""))
  39   (goto-char (point-min))
  40   (while (search-forward "\n@iflatex\n" nil t)
  41     (delete-region (1+ (match-beginning 0))
  42                    (search-forward "\n@end iflatex\n"))))
  43
  44 (defun infohack (file)
  45   (let ((dest-directory default-directory)
  46         (max-lisp-eval-depth (max max-lisp-eval-depth 600))
  47         coding-system)
  48     ;; Emacs 21.3 doesn't support @documentencoding
  49     (unless (get 'documentencoding 'texinfo-format)
  50       (put 'documentencoding 'texinfo-format
  51            'texinfo-discard-line-with-args))
  52     (find-file file)
  53     (setq buffer-read-only nil)
  54     (setq coding-system buffer-file-coding-system)
  55     (infohack-remove-unsupported)
  56     (texinfo-every-node-update)
  57     (texinfo-format-buffer t) ;; Don't save any file.
  58     (setq default-directory dest-directory)
  59     (setq buffer-file-name
  60           (expand-file-name (file-name-nondirectory buffer-file-name)
  61                             default-directory))
  62     (setq buffer-file-coding-system coding-system)
  63     (if (> (buffer-size) 100000)
  64         (Info-split))
  65     (save-buffer)))
  66
  67 (eval-and-compile
  68   (when (string-match "windows-nt\\|os/2\\|emx\\|cygwin"
  69                       (symbol-name system-type))
  70     (defun subst-char-in-region (START END FROMCHAR TOCHAR &optional NOUNDO)
  71       "From START to END, replace FROMCHAR with TOCHAR each time it occurs.
  72 If optional arg NOUNDO is non-nil, don't record this change for undo
  73 and don't mark the buffer as really changed.
  74 Both characters must have the same length of multi-byte form."
  75       (let ((original-buffer-undo-list buffer-undo-list)
  76             (modified (buffer-modified-p)))
  77         (if NOUNDO
  78             (setq buffer-undo-list t))
  79         (goto-char START)
  80         (let ((from (char-to-string FROMCHAR))
  81               (to (char-to-string TOCHAR)))
  82           (while (search-forward from END t)
  83             (replace-match to t t)))
  84         (if NOUNDO
  85             (progn (setq buffer-undo-list original-buffer-undo-list)
  86                    (set-buffer-modidifed-p modified)))))))
  87
  88 (defun batch-makeinfo ()
  89   "Emacs makeinfo in batch mode."
  90   (infohack-texi-format (car command-line-args-left)
  91                         (car (cdr command-line-args-left)))
  92   (setq command-line-args-left nil))
  93
  94 \f
  95 (require 'bytecomp)
  96
  97 (defun infohack-texi-format (file &optional addsuffix)
  98   (let ((auto-save-default nil)
  99         (find-file-run-dired nil)
 100         coding-system-for-write
 101         (error 0))
 102     (condition-case err
 103         (progn
 104           (find-file file)
 105           (setq buffer-read-only nil)
 106           (buffer-disable-undo (current-buffer))
 107           (setq coding-system-for-write buffer-file-coding-system)
 108           ;; process @include before updating node
 109           ;; This might produce some problem if we use @lowersection or
 110           ;; such.
 111           (let ((input-directory default-directory)
 112                 (texinfo-command-end))
 113             (while (re-search-forward "^@include" nil t)
 114               (setq texinfo-command-end (point))
 115               (let ((filename (concat input-directory
 116                                       (texinfo-parse-line-arg))))
 117                 (re-search-backward "^@include")
 118                 (delete-region (point) (save-excursion
 119                                          (forward-line 1)
 120                                          (point)))
 121                 (message "Reading included file: %s" filename)
 122                 (save-excursion
 123                   (save-restriction
 124                     (narrow-to-region
 125                      (point) (+ (point)
 126                                 (car (cdr (insert-file-contents filename)))))
 127                     (goto-char (point-min))
 128                     ;; Remove `@setfilename' line from included file,
 129                     ;; if any, so @setfilename command not duplicated.
 130                     (if (re-search-forward "^@setfilename"
 131                                            (save-excursion
 132                                              (forward-line 100)
 133                                              (point))
 134                                            t)
 135                         (progn
 136                           (beginning-of-line)
 137                           (delete-region (point) (save-excursion
 138                                                    (forward-line 1)
 139                                                    (point))))))))))
 140           ;; Remove ignored areas.
 141           (goto-char (point-min))
 142           (while (re-search-forward "^@ignore[\t\r ]*$" nil t)
 143             (delete-region (match-beginning 0)
 144                            (if (re-search-forward
 145                                 "^@end[\t ]+ignore[\t\r ]*$" nil t)
 146                                (1+ (match-end 0))
 147                              (point-max))))
 148           ;; Remove unsupported commands.
 149           (infohack-remove-unsupported)
 150           ;; Add suffix if it is needed.
 151           (goto-char (point-min))
 152           (when (and addsuffix
 153                      (re-search-forward "^@setfilename[\t ]+\\([^\t\n ]+\\)"
 154                                         nil t)
 155                      (not (string-match "\\.info$" (match-string 1))))
 156             (insert ".info"))
 157           (texinfo-mode)
 158           (texinfo-every-node-update)
 159           (set-buffer-modified-p nil)
 160           (message "texinfo formatting %s..." file)
 161           (if (featurep 'mule)
 162               ;; Encode messages to terminal.
 163               (let ((si:message (symbol-function 'message)))
 164                 (fset 'message
 165                       (byte-compile
 166                        `(lambda (fmt &rest args)
 167                           (funcall ,si:message "%s"
 168                                    (encode-coding-string
 169                                     (apply 'format fmt args)
 170                                     'iso-2022-7bit)))))
 171                 (unwind-protect
 172                     (texinfo-format-buffer nil)
 173                   (fset 'message si:message)))
 174             (texinfo-format-buffer nil))
 175           (if (buffer-modified-p)
 176               (progn (message "Saving modified %s" (buffer-file-name))
 177                      (save-buffer))))
 178       (error
 179        (message ">> Error: %s" (prin1-to-string err))
 180        (message ">>  point at")
 181        (let ((s (buffer-substring (point) (min (+ (point) 100) (point-max))))
 182              (tem 0))
 183          (while (setq tem (string-match "\n+" s tem))
 184            (setq s (concat (substring s 0 (match-beginning 0))
 185                            "\n>>  "
 186                            (substring s (match-end 0)))
 187                  tem (1+ tem)))
 188          (message ">>  %s" s))
 189        (setq error 1)))
 190     (kill-emacs error)))
 191
 192 ;;; infohack.el ends here