112 lines
2.8 KiB
Racket
112 lines
2.8 KiB
Racket
#lang racket/base
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(require ffi/unsafe
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ffi/unsafe/define
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ffi/unsafe/atomic
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setup/dirs
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"../utils/utils.rkt"
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(prefix-in g: racket/gui)
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)
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(provide webwire_new
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webwire_destroy
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webwire_command
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webwire_get
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webwire_status
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webwire_status_string
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reader)
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(define-ffi-definer define-libwebui-wire
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(ffi-lib "c:/devel/racket/webui-wire/build/Debug/libwebui-wire.dll"
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#:custodian (current-custodian)))
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;(ffi-lib "libwebui-wire" '("3" "4" "5" #f)
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; #:get-lib-dirs (lambda ()
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; (cons (build-path ".") (get-lib-search-dirs)))
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; #:fail (lambda ()
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; (ffi-lib (get-lib-path "libwebui-wire.dll")))
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; ))
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(define _webui-handle _pointer)
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(define _webui-get-result
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(_enum '(null = 0
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event
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log
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invalid-handle = 256
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)))
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(define _webui-handle-status
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(_enum '(valid = 1
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handle-destroyed
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handle-needs-destroying
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null-handle
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existing-handle-destroy-this-one
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handle-invalid-unexpected
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)))
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(define-libwebui-wire webwire_new
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(_fun -> _webui-handle))
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(define-libwebui-wire webwire_destroy
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(_fun _webui-handle -> _void))
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(define-libwebui-wire webwire_command
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(_fun _webui-handle _string/utf-8 -> _string/utf-8))
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(define-libwebui-wire webwire_get
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(_fun _webui-handle
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[evt : (_ptr o _string/utf-8)]
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[kind : (_ptr o _string/utf-8)]
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[msg : (_ptr o _string/utf-8)]
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-> [ result : _webui-get-result ]
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-> (list result evt kind msg)))
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(define-libwebui-wire webwire_status
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(_fun _webui-handle -> _webui-handle-status))
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(define-libwebui-wire webwire_status_string
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(_fun _webui-handle-status -> _string/utf-8))
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(define (webwire-new evt-cb log-cb)
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(parameterize ([g:current-eventspace (g:current-eventspace)])
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(let ((evtcb (lambda (msg)
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(g:queue-callback (lambda () (evt-cb msg)))))
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(logcb (lambda (k m)
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(g:queue-callback (lambda () (log-cb k m)))))
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)
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(webwire_new evtcb logcb))))
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(define last-evt #f)
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(define (evt msg)
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(displayln msg)
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(set! last-evt msg))
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(define last-log #f)
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(define (log k m)
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(let ((msg (format "~a ~a" k m)))
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(displayln msg)
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(set! last-log msg)))
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(define (reader h)
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(let ((l (webwire_get h)))
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(let ((result (car l)))
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(unless (or (eq? result 'null) (eq? result 'invalid-handle))
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(let* ((evt (cadr l))
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(kind (caddr l))
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(msg (cadddr l)))
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(unless (eq? evt #f)
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(displayln (format "EVENT:~a" evt)))
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(unless (eq? kind #f)
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(displayln (format "~a:~a" kind msg)))
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(reader h)))
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result)))
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