93 lines
3.5 KiB
EmacsLisp
93 lines
3.5 KiB
EmacsLisp
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;;; pdfsync.el --- AUCTeX style for `pdfsync.sty' -*- lexical-binding: t; -*-
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;; Copyright (C) 2005-2021 Free Software Foundation, Inc.
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;; Author: Ralf Angeli <angeli@iwi.uni-sb.de>
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;; Maintainer: auctex-devel@gnu.org
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;; Created: 2005-12-28
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;; Keywords: tex
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;; This file is part of AUCTeX.
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;; AUCTeX is free software; you can redistribute it and/or modify it
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;; under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 3, or (at your option)
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;; any later version.
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;; AUCTeX is distributed in the hope that it will be useful, but
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;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;; General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with AUCTeX; see the file COPYING. If not, write to the Free
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;; Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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;; 02110-1301, USA.
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;;; Commentary:
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;; This file adds support for `pdfsync.sty'.
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;;; Code:
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(require 'tex)
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(defun LaTeX-pdfsync-output-page ()
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"Return page number in output file corresponding to buffer position."
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(let* ((line (line-number-at-pos))
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(master (TeX-active-master))
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(file (file-name-sans-extension
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(file-relative-name (buffer-file-name)
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(file-name-directory master))))
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(pdfsync-file (concat master ".pdfsync"))
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(buf-live-p (get-file-buffer pdfsync-file))
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(sync-record "0")
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(sync-page "1")
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last-match)
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(when (file-exists-p pdfsync-file)
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(with-current-buffer (find-file-noselect pdfsync-file)
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(save-restriction
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(goto-char (point-min))
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;; Narrow region to file in question.
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(when (not (string= file master))
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(re-search-forward (concat "^(" file "\\(.tex\\)?$") nil t)
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(let ((beg (match-beginning 0)))
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(goto-char beg)
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(narrow-to-region (line-beginning-position 2)
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(progn (forward-sexp) (point))))
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(goto-char (point-min)))
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;; Look for the record number.
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(catch 'break
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(while (re-search-forward "^(\\|^l \\([0-9]+\\) \\([0-9]+\\)" nil t)
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(cond ((string= (match-string 0) "(")
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(goto-char (match-beginning 0))
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(forward-sexp))
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((> (string-to-number (match-string 2)) line)
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(throw 'break nil))
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(t
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(setq sync-record (match-string 1)
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last-match (match-beginning 0))))))
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;; Look for the page number.
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(goto-char (or last-match (point-min)))
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;; There might not be any p or s lines for the current file,
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;; so make it possible to search further.
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(widen)
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(catch 'break
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(while (re-search-forward "^p \\([0-9]+\\)" nil t)
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(when (>= (string-to-number (match-string 1))
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(string-to-number sync-record))
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(re-search-backward "^s \\([0-9]+\\)" nil t)
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(setq sync-page (match-string 1))
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(throw 'break nil)))))
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;; Kill the buffer if it was loaded by us.
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(unless buf-live-p (kill-buffer (current-buffer)))))
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sync-page))
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(TeX-add-style-hook
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"pdfsync"
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(lambda ()
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(setq TeX-source-correlate-output-page-function #'LaTeX-pdfsync-output-page))
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TeX-dialect)
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;;; pdfsync.el ends here
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