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diff --git a/src/guile/skribilo/utils/files.scm b/src/guile/skribilo/utils/files.scm
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+;;; files.scm  --  File-related utilities.
+;;;
+;;; Copyright 2006  Ludovic Courtès <ludovic.courtes@laas.fr>
+;;;
+;;;
+;;; This program is free software; you can redistribute it and/or modify
+;;; it under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 2 of the License, or
+;;; (at your option) any later version.
+;;;
+;;; This program is distributed in the hope that it will be useful,
+;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with this program; if not, write to the Free Software
+;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+;;; USA.
+
+(define-module (skribilo utils files)
+  :export (file-prefix file-suffix file-size))
+
+;;; Author:  Ludovic Courtès
+;;;
+;;; Commentary:
+;;;
+;;; This module defines filesystem-related utility functions.
+;;;
+;;; Code:
+
+(define (file-size file)
+  (let ((file-info (false-if-exception (stat file))))
+    (if file-info
+	(stat:size file-info)
+	#f)))
+
+(define (file-prefix fn)
+  (if fn
+      (let ((dot (string-rindex fn #\.)))
+	(if dot (substring fn 0 dot) fn))
+      "./SKRIBILO-OUTPUT"))
+
+(define (file-suffix fn)
+  (if fn
+      (let ((dot (string-rindex fn #\.)))
+	(if dot
+	    (substring fn (+ dot 1) (string-length fn))
+	    ""))
+      #f))
+
+
+;;; arch-tag: b63d2a9f-a254-4e2d-8d85-df773bbc4a9b
+
+;;; files.scm ends here