infohack.el

   1 ;;; infohack.el --- a hack to format info file.
   2 ;; Copyright (C)  2001, 2003, 2004, 2008  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 3, 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., 51 Franklin Street, Fifth Floor,
  22 ;; Boston, MA 02110-1301, USA.
  23
  24 ;;; Commentary:
  25
  26 ;;; Code:
  27
  28 (load-file (expand-file-name "ptexinfmt.el" "./"))
  29
  30 (defun infohack-remove-unsupported ()
  31   (goto-char (point-min))
  32   (while (re-search-forward "@\\(end \\)?ifnottex" nil t)
  33     (replace-match ""))
  34   (goto-char (point-min))
  35   (while (search-forward "\n@iflatex\n" nil t)
  36     (delete-region (1+ (match-beginning 0))
  37                    (search-forward "\n@end iflatex\n"))))
  38
  39 (defun infohack (file)
  40   (let ((dest-directory default-directory)
  41         (max-lisp-eval-depth (max max-lisp-eval-depth 600))
  42         coding-system)
  43     ;; Emacs 21.3 doesn't support @documentencoding
  44     (unless (get 'documentencoding 'texinfo-format)
  45       (put 'documentencoding 'texinfo-format
  46            'texinfo-discard-line-with-args))
  47     (find-file file)
  48     (setq buffer-read-only nil)
  49     (setq coding-system buffer-file-coding-system)
  50     (infohack-remove-unsupported)
  51     (texinfo-every-node-update)
  52     (texinfo-format-buffer t) ;; Don't save any file.
  53     (setq default-directory dest-directory)
  54     (setq buffer-file-name
  55           (expand-file-name (file-name-nondirectory buffer-file-name)
  56                             default-directory))
  57     (setq buffer-file-coding-system coding-system)
  58     (if (> (buffer-size) 100000)
  59         (Info-split))
  60     (save-buffer)))
  61
  62 (eval-and-compile
  63   (when (string-match "windows-nt\\|os/2\\|emx\\|cygwin"
  64                       (symbol-name system-type))
  65     (defun subst-char-in-region (START END FROMCHAR TOCHAR &optional NOUNDO)
  66       "From START to END, replace FROMCHAR with TOCHAR each time it occurs.
  67 If optional arg NOUNDO is non-nil, don't record this change for undo
  68 and don't mark the buffer as really changed.
  69 Both characters must have the same length of multi-byte form."
  70       (let ((original-buffer-undo-list buffer-undo-list)
  71             (modified (buffer-modified-p)))
  72         (if NOUNDO
  73             (setq buffer-undo-list t))
  74         (goto-char START)
  75         (let ((from (char-to-string FROMCHAR))
  76               (to (char-to-string TOCHAR)))
  77           (while (search-forward from END t)
  78             (replace-match to t t)))
  79         (if NOUNDO
  80             (progn (setq buffer-undo-list original-buffer-undo-list)
  81                    (set-buffer-modidifed-p modified)))))))
  82
  83 (defun batch-makeinfo ()
  84   "Emacs makeinfo in batch mode."
  85   (infohack-texi-format (car command-line-args-left)
  86                         (car (cdr command-line-args-left)))
  87   (setq command-line-args-left nil))
  88
  89 \f
  90 (require 'bytecomp)
  91
  92 ;; Reduce the number of split Info files.
  93 (if (featurep 'xemacs)
  94     (if (load "informat.el" t t)
  95         (let* ((fn (symbol-function 'Info-split))
  96                (fns (prin1-to-string fn)))
  97           (load "informat.elc" t t)
  98           (when (and (string-match "\\([\t\n ]+\\)50000\\([\t\n )]+\\)" fns)
  99                      (condition-case nil
 100                          (setq fn (byte-compile
 101                                    (read (replace-match "\\1200000\\2" nil nil
 102                                                         fns))))
 103                        (error nil))
 104                      (fset 'Info-split fn)))))
 105   (require 'informat)
 106   (let* ((fn (symbol-function 'Info-split))
 107          (fns (prin1-to-string fn)))
 108     (when (string-match "\\([\t\n ]+\\)50000\\([\t\n ]+\\)" fns)
 109       (condition-case nil
 110           (fset 'Info-split (read (replace-match "\\1200000\\2" nil nil fns)))
 111         (error
 112          (fset 'Info-split fn))))))
 113
 114 (defun infohack-texi-format (file &optional addsuffix)
 115   (let ((auto-save-default nil)
 116         (find-file-run-dired nil)
 117         (coding-system-for-read (if (featurep 'xemacs)
 118                                     'iso-2022-7bit
 119                                   coding-system-for-read))
 120         coding-system-for-write
 121         (error 0))
 122     (condition-case err
 123         (progn
 124           (find-file file)
 125           (setq buffer-read-only nil)
 126           (buffer-disable-undo (current-buffer))
 127           (setq coding-system-for-write buffer-file-coding-system)
 128           ;; process @include before updating node
 129           ;; This might produce some problem if we use @lowersection or
 130           ;; such.
 131           (let ((input-directory default-directory)
 132                 (texinfo-command-end))
 133             (while (re-search-forward "^@include" nil t)
 134               (setq texinfo-command-end (point))
 135               (let ((filename (concat input-directory
 136                                       (texinfo-parse-line-arg))))
 137                 (re-search-backward "^@include")
 138                 (delete-region (point) (save-excursion
 139                                          (forward-line 1)
 140                                          (point)))
 141                 (message "Reading included file: %s" filename)
 142                 (save-excursion
 143                   (save-restriction
 144                     (narrow-to-region
 145                      (point) (+ (point)
 146                                 (car (cdr (insert-file-contents filename)))))
 147                     (goto-char (point-min))
 148                     ;; Remove `@setfilename' line from included file,
 149                     ;; if any, so @setfilename command not duplicated.
 150                     (if (re-search-forward "^@setfilename"
 151                                            (save-excursion
 152                                              (forward-line 100)
 153                                              (point))
 154                                            t)
 155                         (progn
 156                           (beginning-of-line)
 157                           (delete-region (point) (save-excursion
 158                                                    (forward-line 1)
 159                                                    (point))))))))))
 160           ;; Remove ignored areas.
 161           (goto-char (point-min))
 162           (while (re-search-forward "^@ignore[\t\r ]*$" nil t)
 163             (delete-region (match-beginning 0)
 164                            (if (re-search-forward
 165                                 "^@end[\t ]+ignore[\t\r ]*$" nil t)
 166                                (1+ (match-end 0))
 167                              (point-max))))
 168           ;; Remove unsupported commands.
 169           (infohack-remove-unsupported)
 170           ;; Add suffix if it is needed.
 171           (goto-char (point-min))
 172           (when (and addsuffix
 173                      (re-search-forward "^@setfilename[\t ]+\\([^\t\n ]+\\)"
 174                                         nil t)
 175                      (not (string-match "\\.info$" (match-string 1))))
 176             (insert ".info"))
 177           (texinfo-mode)
 178           (texinfo-every-node-update)
 179           (set-buffer-modified-p nil)
 180           (message "texinfo formatting %s..." file)
 181           (let ((si:message (symbol-function 'message)))
 182             ;; Encode messages to terminal.
 183             (fset
 184              'message
 185              (byte-compile
 186               (if (featurep 'xemacs)
 187                   `(lambda (fmt &rest args)
 188                      (unless (and (string-equal fmt "%s clean")
 189                                   (equal (car args) buffer-file-name))
 190                        (funcall ,si:message "%s"
 191                                 (encode-coding-string (apply 'format fmt args)
 192                                                       'iso-2022-7bit))))
 193                 `(lambda (fmt &rest args)
 194                    (funcall ,si:message "%s"
 195                             (encode-coding-string (apply 'format fmt args)
 196                                                   'iso-2022-7bit))))))
 197             (unwind-protect
 198                 (texinfo-format-buffer nil)
 199               (fset 'message si:message)))
 200           (if (buffer-modified-p)
 201               (progn (message "Saving modified %s" (buffer-file-name))
 202                      (save-buffer))))
 203       (error
 204        (message ">> Error: %s" (prin1-to-string err))
 205        (message ">>  point at")
 206        (let ((s (buffer-substring (point) (min (+ (point) 100) (point-max))))
 207              (tem 0))
 208          (while (setq tem (string-match "\n+" s tem))
 209            (setq s (concat (substring s 0 (match-beginning 0))
 210                            "\n>>  "
 211                            (substring s (match-end 0)))
 212                  tem (1+ tem)))
 213          (message ">>  %s" s))
 214        (setq error 1)))
 215     (kill-emacs error)))
 216
 217 ;;; infohack.el ends here