source: project/nondescript/filesystem/filesystem.scm @ 8841

;; statvfs egg for Chicken Scheme

;; Copyright (c) 2008 Ozzi Lee

;; Permission is hereby granted, free of charge, to any person
;; obtaining a copy of this software and associated documentation
;; files (the "Software"), to deal in the Software without
;; restriction, including without limitation the rights to use,
;; copy, modify, merge, publish, distribute, sublicense, and/or sell
;; copies of the Software, and to permit persons to whom the
;; Software is furnished to do so, subject to the following
;; conditions:

;; The above copyright notice and this permission notice shall be
;; included in all copies or substantial portions of the Software.

;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
;; OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
;; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
;; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
;; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
;; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
;; OTHER DEALINGS IN THE SOFTWARE.

(declare (export
          filesystem:block-size
          filesystem:blocks-total
          filesystem:blocks-free
          filesystem:blocks-available
          filesystem:blocks->bytes
          filesystem:blocks->kilobytes
          filesystem:blocks->kibibytes))

(use statvfs)

(define (filesystem:block-size path)
  (vector-ref (statvfs path) 2))

(define (filesystem:blocks-total path)
  (vector-ref (statvfs path) 3))

(define (filesystem:blocks-free path)
  (vector-ref (statvfs path) 4))

(define (filesystem:blocks-available path)
  (vector-ref (statvfs path) 5))

(define (filesystem:blocks->bytes blocksize blocks units)
  (inexact->exact (round (* blocks (/ blocksize units)))))

(define (filesystem:blocks->kilobytes blocksize blocks e)
  (filesystem:blocks->bytes blocksize blocks (expt 1000 e)))

(define (filesystem:blocks->kibibytes blocksize blocks e)
  (filesystem:blocks->bytes blocksize blocks (expt 1024 e)))