Artifact
d18764a9fcdda3704b7c2a4710f05f8210a3ae2f:
;; Copyright (c) 2009 Derick Eddington. All rights reserved.
;; Licensed under an MIT-style license. My license is in the file
;; named LICENSE from the original collection this file is distributed
;; with. If this file is redistributed with some other collection, my
;; license must also be included.
#!r6rs
(library (srfi private OS-id-features)
(export
OS-id-features)
(import
(rnrs))
(define (OS-id-features OS-id features-alist)
(define OS-id-len (string-length OS-id))
(define (OS-id-contains? str)
(define str-len (string-length str))
(let loop ((i 0))
(and (<= (+ i str-len) OS-id-len)
(or (string-ci=? str (substring OS-id i (+ i str-len)))
(loop (+ 1 i))))))
(apply append
(map cdr (filter (lambda (x) (OS-id-contains? (car x)))
features-alist))))
)