guile/test-suite/tests/c-api.test

;;;; c-api.test --- complementary test suite for the c-api     -*- scheme -*-
;;;; MDJ 990915 <djurfeldt@nada.kth.se>
;;;;
;;;; 	Copyright (C) 1999, 2006 Free Software Foundation, Inc.
;;;; 
;;;; 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, 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 software; see the file COPYING.  If not, write to
;;;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;;;; Boston, MA 02110-1301 USA

(define srcdir (cdr (assq 'srcdir %guile-build-info)))

(define (egrep string filename)
  (zero? (system (string-append "egrep '" string "' " filename " >/dev/null"))))

(define (seek-offset-test dirname)
  (let ((dir (opendir dirname)))
    (do ((filename (readdir dir) (readdir dir)))
	((eof-object? filename))
      (if (and 
	   (eqv? (string-ref filename (- (string-length filename) 1)) #\c)
	   (eqv? (string-ref filename (- (string-length filename) 2)) #\.))
	  (let ((file (string-append dirname "/" filename)))
	    (if (and (file-exists? file)
		     (egrep "SEEK_(SET|CUR|END)" file)
		     (not (egrep "unistd.h" file)))
		(fail file)))))))

;;; A rough conservative test to check that all source files
;;; which use SEEK_SET, SEEK_CUR, and SEEK_END include unistd.h.
;;;
;;; If this test start to trigger without reason, we just modify it
;;; to be more precise.
(with-test-prefix "SEEK_XXX => #include <unistd.h>"
  (if (file-exists? srcdir)
      (seek-offset-test srcdir)))