77 lines
2.9 KiB
Scheme
77 lines
2.9 KiB
Scheme
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;;; scganadu.scm - a Xanadu file system (until desktop publishing)
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;;;
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;;; Copyright (c) 2011-2012 Johan Ceuppens
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;;;
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;;; All rights reserved.
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;;;
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;;; Redistribution and use in source and binary forms, with or without
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;;; modification, are permitted provided that the following conditions
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;;; are met:
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;;; 1. Redistributions of source code must retain the above copyright
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;;; notice, this list of conditions and the following disclaimer.
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;;; 2. Redistributions in binary form must reproduce the above copyright
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;;; notice, this list of conditions and the following disclaimer in the
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;;; documentation and/or other materials provided with the distribution.
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;;; 3. The name of the authors may not be used to endorse or promote products
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;;; derived from this software without specific prior written permission.
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;;;
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;;; THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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;;; IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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;;; OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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;;; IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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;;; INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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;;; NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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;;; DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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;;; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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;;; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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;;; THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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;; This code fabricates xanadu hypertext files to attach
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;; to xanandu objects or use as metafiles
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(load "scganaduutil.scm")
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(define (make-scganadu)
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(let ((record (delay #f)))
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(define (add-file filename)
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(let ((displayproc (write (((FILE-MAKER-unit (force record)) 'get-post-html)
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(string-append "<filename>"
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filename
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"</filename>"))))
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(with-output-to-file (string-append "." filename ".scganadu") displayproc)
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)))
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(define (attach-to-file! filename)
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(let ((displayproc (write (((FILE-MAKER-unit (force record)) 'get-post-html)
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(string-append "<filename>"
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filename
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"</filename>")))))
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(with-output-to-file filename displayproc)
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))
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(define (dispatch msg)
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(lambda (msg)
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(cond ((eq? msg 'add-file)add-file)
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((eq? msg 'attach-to-file!)attach-to-file!)
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(else (aspecterror) (display "make-scganadu")))))
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(define :scganadu-record
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(make-record-type 'scganadu-record
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'(FILE-MAKER make-scganadu)))
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(define make-scganadu-record
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(record-constructor :scganadu-record
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'(FILE-MAKER make-scganadu)))
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(define FILE-MAKER-unit (record-accessor :scganadu-record 'FILE-MAKER))
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(define make-scganadu-unit (record-accessor :scganadu-record 'make-scganadu))
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(define make-scganadu-record
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(delay (make-copy-of-document))
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(delay (make-cell dispatch)))
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(set! record make-scganadu-record)
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dispatch))
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