code.delx.au - gnu-emacs-elpa/blob - auctex-11.86/style/pdfsync.el

   1 ;;; pdfsync.el --- AUCTeX style for `pdfsync.sty'
   2
   3 ;; Copyright (C) 2005, 2008 Free Software Foundation, Inc.
   4
   5 ;; Author: Ralf Angeli <angeli@iwi.uni-sb.de>
   6 ;; Maintainer: auctex-devel@gnu.org
   7 ;; Created: 2005-12-28
   8 ;; Keywords: tex
   9
  10 ;; This file is part of AUCTeX.
  11
  12 ;; AUCTeX is free software; you can redistribute it and/or modify it
  13 ;; under the terms of the GNU General Public License as published by
  14 ;; the Free Software Foundation; either version 3, or (at your option)
  15 ;; any later version.
  16
  17 ;; AUCTeX is distributed in the hope that it will be useful, but
  18 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20 ;; General Public License for more details.
  21
  22 ;; You should have received a copy of the GNU General Public License
  23 ;; along with AUCTeX; see the file COPYING.  If not, write to the Free
  24 ;; Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  25 ;; 02110-1301, USA.
  26
  27 ;;; Commentary:
  28
  29 ;; This file adds support for `pdfsync.sty'.
  30
  31 ;;; Code:
  32
  33 (defun LaTeX-pdfsync-output-page ()
  34   "Return page number in output file corresponding to buffer position."
  35   (let* ((line (TeX-line-number-at-pos))
  36          (master (TeX-active-master))
  37          (file (file-name-sans-extension
  38                 (file-relative-name (buffer-file-name)
  39                                     (file-name-directory master))))
  40          (pdfsync-file (concat master ".pdfsync"))
  41          (buf-live-p (get-file-buffer pdfsync-file))
  42          (sync-record "0")
  43          (sync-line "-1")
  44          (sync-page "1")
  45          last-match)
  46     (when (file-exists-p pdfsync-file)
  47       (with-current-buffer (find-file-noselect pdfsync-file)
  48         (save-restriction
  49           (goto-char (point-min))
  50           ;; Narrow region to file in question.
  51           (when (not (string= file master))
  52             (re-search-forward (concat "^(" file "\\(.tex\\)?$") nil t)
  53             (let ((beg (match-beginning 0)))
  54               (goto-char beg)
  55               (narrow-to-region (line-beginning-position 2)
  56                                 (progn (forward-sexp) (point))))
  57             (goto-char (point-min)))
  58           ;; Look for the record number.
  59           (catch 'break
  60             (while (re-search-forward "^(\\|^l \\([0-9]+\\) \\([0-9]+\\)" nil t)
  61               (cond ((string= (match-string 0) "(")
  62                      (goto-char (match-beginning 0))
  63                      (forward-sexp))
  64                     ((> (string-to-number (match-string 2)) line)
  65                      (throw 'break nil))
  66                     (t
  67                      (setq sync-record (match-string 1)
  68                            sync-line (match-string 2)
  69                            last-match (match-beginning 0))))))
  70           ;; Look for the page number.
  71           (goto-char (or last-match (point-min)))
  72           ;; There might not be any p or s lines for the current file,
  73           ;; so make it possible to search further.
  74           (widen)
  75           (catch 'break
  76             (while (re-search-forward "^p \\([0-9]+\\)" nil t)
  77               (when (>= (string-to-number (match-string 1))
  78                         (string-to-number sync-record))
  79                 (re-search-backward "^s \\([0-9]+\\)" nil t)
  80                 (setq sync-page (match-string 1))
  81                 (throw 'break nil)))))
  82         ;; Kill the buffer if it was loaded by us.
  83         (unless buf-live-p (kill-buffer (current-buffer)))))
  84     sync-page))
  85
  86 (TeX-add-style-hook
  87  "pdfsync"
  88  (lambda ()
  89    (setq TeX-source-correlate-output-page-function 'LaTeX-pdfsync-output-page)))
  90
  91 ;;; pdfsync.el ends here