RailsOnLisp/rol-assets/digest.lisp

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• Hash : cf03e3cc
  Author : Thomas de Grivel
  Date : 2017-03-04T19:15:41
  

  Replace files on asset precompile.
  

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• digest.lisp

• ;;
  ;;  RoL-assets  -  Asset pipeline
  ;;
  ;;  Copyright 2012-2015 Thomas de Grivel <thomas@lowh.net>
  ;;
  ;;  Permission to use, copy, modify, and distribute this software for any
  ;;  purpose with or without fee is hereby granted, provided that the above
  ;;  copyright notice and this permission notice appear in all copies.
  ;;
  ;;  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  ;;  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  ;;  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  ;;  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  ;;  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  ;;  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  ;;  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  ;;
  
  (in-package :RoL-assets)
  
  (defvar *digest* :sha1)
  
  (defun digest-file (path)
    (let ((n (ironclad:octets-to-integer (ironclad:digest-file *digest* path))))
      (cl-base64:integer-to-base64-string n :uri t)))
  
  (defmethod digest-asset ((asset asset) (path pathname))
    (setf (asset-digest asset) (digest-file path))
    (let ((digest-path (asset-path asset)))
      (when (probe-file digest-path)
        (sb-posix:unlink digest-path))
      (sb-posix:link path digest-path)
      #+nil(sb-posix:unlink path)
      #+nil(sb-posix:symlink (make-pathname :name (pathname-name digest-path)
                                       :type (pathname-type digest-path))
                        path)
      digest-path))
  

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