Hash :
33c9aab8
Author :
Date :
2013-08-06T15:29:54
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;;
;; LowH Triangle Assets - Asset pipeline
;;
;; Copyright 2012 Thomas de Grivel <billitch@gmail.com>
;;
;; 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 :lowh.triangle.assets)
;; Finding assets
;; FIXME: This could be improved by listing all files in assets
;; FIXME: directories to work the paths in memory.
(defun find-in-assets (type dir name ext assets)
(find-if (lambda (asset)
(declare (type asset asset))
(and (typep asset type)
(string= name (asset-name asset))
(or (not (string= dir (asset-source-dir asset)))
(string= ext (asset-source-ext asset)))))
assets))
#+nil
(fmakunbound 'find-assets)
(defgeneric find-assets (type dir name ext assets))
;; Resolve name, possibly wild
(defmethod find-assets ((type class)
(dir string)
(name string)
(ext symbol)
assets)
(let ((absolute-dir (truename dir))
(assets assets))
(dolist (path (directory (str dir name (when ext ".") ext)))
(let* ((name.ext (enough-namestring (truename path) absolute-dir))
(name (if ext
(subseq name.ext 0 (- (length name.ext)
(length (string ext))
1))
name.ext)))
(unless (find-in-assets type dir name ext assets)
(push (make-instance type
:name name
:source-dir dir
:source-ext ext)
assets))))
assets))
;; Loop through extensions
(defmethod find-assets ((type class)
(dir string)
(name string)
(extensions cons)
assets)
(reduce (lambda (assets ext)
(declare (type symbol ext))
(find-assets type dir name ext assets))
extensions
:initial-value assets))
(defmethod find-assets ((type class)
(dir string)
(name string)
(ext null)
assets)
(find-assets type dir name (asset-class-extensions type) assets))
;; Loop through dirs
(defmethod find-assets ((type class)
(directories cons)
(name string)
ext
assets)
(reduce (lambda (assets dir)
(declare (type string dir))
(find-assets type dir name ext assets))
directories
:initial-value assets))
(defmethod find-assets (type (dir null) name ext assets)
(find-assets type (assets-dirs) name ext assets))
;; Resolve class
(defmethod find-assets ((type symbol) dir name ext assets)
(let ((class (if (keywordp type)
(find-class (find-symbol (str type "-ASSET")))
(find-class type))))
(unless class
(error "Unknown asset type : ~S" type))
(find-assets (the class class) dir name ext assets)))
;; Asset spec
(defmacro with-asset-spec (spec (name ext) &body body)
`(let (,name ,ext)
(cl-ppcre:register-groups-bind (n e)
("^\\s*(.*?)(?:\\.([^./]+))?\\s*$" ,spec)
(setf ,name n ,ext (intern-extension e)))
(let ((,name ,name) (,ext ,ext))
,@body)))
(defun find-assets-from-spec (spec &optional class assets)
(let ((new-assets (if class
(find-assets class nil spec nil assets)
assets)))
(if (eq assets new-assets)
(with-asset-spec spec (name ext)
(find-assets (or class (extension-asset-class ext))
nil name nil assets))
new-assets)))
(defun find-assets-from-specs (specs &optional class assets)
(reduce (lambda (assets spec)
(find-assets-from-spec spec class assets))
specs
:initial-value assets))
(defun find-asset (spec &optional class)
(first (find-assets-from-spec spec class)))