~ chicken-core (chicken-5) /build-version.scm

 1;;;; build-version.scm
 2;
 3; Copyright (c) 2011-2022, The CHICKEN Team
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25
26
27(declare
28 (unit build-version))
29
30;; (read-version filename): Read line from FILENAME and return
31;; as a string; return #f if non-existent file or blank line.
32(define-syntax read-version
33  (er-macro-transformer
34   (lambda (x r c)
35     (let ((fn (cadr x)))
36       (and (##sys#file-exists? fn #t #f #f)
37	    (call-with-input-file (cadr x)
38	     (lambda (p)
39	       (let ((ver ((##sys#slot (##sys#slot p 2) 8) p 256))) ; read-line
40		 (if (or (eof-object? ver) (string=? ver ""))
41		     #f
42		     ver)))))))))
43
44(define ##sys#build-id      (read-version "buildid"))
45(define ##sys#build-branch  (read-version "buildbranch"))
46(define ##sys#build-version (read-version "buildversion"))