;;;;
;;;; pkgball.stk			-- Pkgball management
;;;;
;;;; Copyright © 2006-2007 Erick Gallesio - I3S-CNRS/ESSI <eg@essi.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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
;;;; USA.
;;;;
;;;;           Author: Erick Gallesio [eg@essi.fr]
;;;;    Creation date: 26-Dec-2006 17:44 (eg)
;;;; Last file update: 24-Mar-2007 16:18 (eg)
;;;;

;; ----------------------------------------------------------------------
;;    pkgball-sans-suffix ...
;; ----------------------------------------------------------------------
(define (pkgball-sans-suffix path)
   (substring path 0 (- (string-length path)
			(string-length (pkgball-suffix)))))

;; ----------------------------------------------------------------------
;;	pkgball? ...
;; ----------------------------------------------------------------------
(define (pkgball? path)
  (let ((len-path   (string-length path))
	(len-suffix (string-length (pkgball-suffix))))
    (and (> len-path len-suffix)
	 (string=? (substring path (- len-path len-suffix) len-path)
		   (pkgball-suffix)))))

;*---------------------------------------------------------------------*/
;*    parse-pkgball-name ...                                          */
;*---------------------------------------------------------------------*/
(define (parse-pkgball-name name)
  (let ((res (regexp-match  "(_*[^_]+)_*([a-z]+)*-([0-9]+.[0-9]+.[0-9]+).tar.gz"
			    (basename name))))
    (if res
      (values (cadr res) (caddr res) (cadddr res))
      (values #f #f #f))))