lisp/gnus/compface.el

   1 ;;; compface.el --- functions for converting X-Face headers
   2
   3 ;; Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
   4
   5 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
   6 ;; Keywords: news
   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 3, 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., 51 Franklin Street, Fifth Floor,
  23 ;; Boston, MA 02110-1301, USA.
  24
  25 ;;; Commentary:
  26
  27 ;;; Code:
  28
  29 ;;;###
  30 (defun uncompface (face)
  31   "Convert FACE to pbm.
  32 Requires the external programs `uncompface', and `icontopbm'.  On a
  33 GNU/Linux system these might be in packages with names like `compface'
  34 or `faces-xface' and `netpbm' or `libgr-progs', for instance."
  35   (with-temp-buffer
  36     (unless (featurep 'xemacs) (set-buffer-multibyte nil))
  37     (insert face)
  38     (let ((coding-system-for-read 'raw-text)
  39           ;; At least "icontopbm" doesn't work with Windows because
  40           ;; the line-break code is converted into CRLF by default.
  41           (coding-system-for-write 'binary))
  42       (and (eq 0 (apply 'call-process-region (point-min) (point-max)
  43                         "uncompface"
  44                         'delete '(t nil) nil))
  45            (progn
  46              (goto-char (point-min))
  47              (insert "/* Width=48, Height=48 */\n")
  48              ;; I just can't get "icontopbm" to work correctly on its
  49              ;; own in XEmacs.  And Emacs doesn't understand un-raw pbm
  50              ;; files.
  51              (if (not (featurep 'xemacs))
  52                  (eq 0 (call-process-region (point-min) (point-max)
  53                                             "icontopbm"
  54                                             'delete '(t nil)))
  55                (shell-command-on-region (point-min) (point-max)
  56                                         "icontopbm | pnmnoraw"
  57                                         (current-buffer) t)
  58                t))
  59            (buffer-string)))))
  60
  61 (provide 'compface)
  62
  63 ;; arch-tag: f9c78e84-98c0-4142-9682-8ba4cf4c3441
  64 ;;; compface.el ends here