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, 2012, 2014, 2022 Free Software Foundation, Inc.
;;;;
;;;; This library is free software; you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public
;;;; License as published by the Free Software Foundation; either
;;;; version 3 of the License, or (at your option) any later version.
;;;;
;;;; This library 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
;;;; Lesser General Public License for more details.
;;;;
;;;; You should have received a copy of the GNU Lesser General Public
;;;; License along with this library; if not, write to the Free Software
;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

(use-modules (test-suite lib))

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

(define (egrep string filename)
  (zero? (system (string-append "grep -E \"" string "\" " filename
                                " >" %null-device))))

(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))
                (pass-if file (egrep "unistd.h" 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)))