70 lines
2.2 KiB
Scheme
70 lines
2.2 KiB
Scheme
;;; Gash -- Guile As SHell
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;;; Copyright © 2019 Timothy Sample <samplet@ngyro.com>
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;;;
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;;; This file is part of Gash.
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;;;
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;;; Gash is free software: you can redistribute it and/or modify
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;;; it under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation, either version 3 of the License, or
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;;; (at your option) any later version.
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;;;
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;;; Gash is distributed in the hope that it will be useful,
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;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with Gash. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gash compat)
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#:export (if-guile-version-below))
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;;; Commentary:
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;;;
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;;; This module fills in for features that are missing in older
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;;; versions of the '(guile)' module.
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;;;
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;;; Code:
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(define-syntax if-guile-version-below
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(lambda (x)
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(define (guile-version<? major minor micro)
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(let ((g-major (string->number (major-version)))
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(g-minor (string->number (minor-version)))
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(g-micro (string->number (micro-version))))
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(or (< g-major major)
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(and (= g-major major)
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(< g-minor minor))
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(and (= g-major major)
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(= g-minor minor)
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(< g-micro micro)))))
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(syntax-case x ()
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((_ (maj min mic) consequent alternate)
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(if (guile-version<? (syntax->datum #'maj)
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(syntax->datum #'min)
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(syntax->datum #'mic))
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#'consequent
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#'alternate)))))
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(if-guile-version-below (2 0 10)
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(begin
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(define-public EXIT_SUCCESS 0)
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(define-public EXIT_FAILURE 1)
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(define-public (exact-integer? x)
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(and (integer? x) (exact? x))))
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#f)
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(if-guile-version-below (2 2 0)
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(begin
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(define* (setvbuf port mode #:optional size)
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(let ((mode (match mode
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('none _IONBF)
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('line _IOLBF)
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('block _IOFBF))))
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((@ (guile) setvbuf) port mode size)))
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(export! setvbuf))
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#f)
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