380 lines
9.7 KiB
Scheme
380 lines
9.7 KiB
Scheme
;; Structures and interfaces for surflets.
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;;; Copyright 2002, 2003 Andreas Bernauer
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;;; Copyright 2002 Martin Gasbichler
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;;; NOTE: SSAX/lib/packages.scm must be loaded before you can use this
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;;; downloadable from
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;;; http://sourceforge.net/project/showfiles.php?group_id=30687 (take
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;;; the r5rs compliant version (ssax-sr5rs-plt200-4.9.tar.gz); and
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;;; patch string->goodhtml in packages.scm to string->goodHTML)
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;;; Interfaces
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;; Surflet Handler
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(define-interface surflet-handler-interface
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(export surflet-handler))
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;; Responses from SUrflets
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(define-interface surflet-handler/responses-interface
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(export make-surflet-response
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surflet-response?
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surflet-response-status
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surflet-response-content-type
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surflet-response-headers
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surflet-response-data))
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;; Use for SUrflets
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(define-interface surflet-handler/surflets-interface
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(compound-interface
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surflet-handler/responses-interface
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(export send/suspend ;send and suspend
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send/finish ;send and finish
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send ;just send (no finish, no suspend)
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send-error ;send error response
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set-session-data!
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get-session-data
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adjust-timeout! ;adjusts timeout of current session
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)))
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;; Use for adminstration of the Surflet Handler
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(define-interface surflet-handler/admin-interface
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(export get-loaded-surflets
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unload-surflet
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options-session-lifetime
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options-cache-surflets?
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options-surflet-path
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set-options-session-lifetime!
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set-options-cache-surflets?!
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get-sessions
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session-surflet-name
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session-memo
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session-continuation-table
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session-continuation-table-lock
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session-continuation-counter
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delete-session!
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session-adjust-timeout!
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adjust-timeout!
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get-continuations
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delete-continuation!
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instance-session-id
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resume-url?
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resume-url-ids
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resume-url-session-id
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resume-url-continuation-id))
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;; Helping functions for surflets
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(define-interface surflets-interface
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(compound-interface
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surflet-handler/surflets-interface
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(export send-html/suspend
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send-html/finish
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send-html
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form-query
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get-bindings
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extract-bindings
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extract-single-binding
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adjust-timeout!
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make-outdater
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(if-outdated :syntax)
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show-outdated
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generate-input-field-name
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make-input-field
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make-higher-input-field
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make-text-input-field
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make-hidden-input-field
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make-password-input-field
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make-number-input-field
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make-textarea-input-field
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make-select-input-field
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make-checkbox-input-field
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make-radio-input-fields
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make-submit-button
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make-reset-button
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make-image-button
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input-field-value
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raw-input-field-value
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input-field-binding
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make-address
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make-annotated-address
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returned-via
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returned-via?
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(case-returned-via :syntax)
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make-callback
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my-session-id
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my-continuation-id
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my-ids)))
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;; THE interface that SUrflets use.
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(define-interface surflet-interface
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(export main)) ; MAIN gets one parameter, the REQUEST
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;; Simple Surflet API as known from PLT
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(define-interface simple-surflet-api-interface
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(export single-query
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queries
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form-query
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inform
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final-page
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make-password
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make-number
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make-boolean
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make-radio
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make-yes-no
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extract/single
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extract))
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;; shift-reset
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(define-interface shift-reset-interface
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(export (reset :syntax)
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(shift :syntax)))
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;; For memory profiling
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(define-interface profiling-interface
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(export profile-space
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profile-result
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profile-results
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write-gnuplot-data-file
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space-info-pair space-info-symbol
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space-info-vector space-info-closure
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space-info-location space-info-cell
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space-info-channel space-info-port
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space-info-ratnum space-info-record
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space-info-continuation space-info-extended-number
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space-info-template space-info-weak-pointer
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space-info-shared-binding space-info-unused-d-header1
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space-info-unused-d-header2 space-info-string
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space-info-byte-vector space-info-double
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space-info-bignum space-info-total
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set-space-info-pair! set-space-info-symbol!
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set-space-info-vector! set-space-info-closure!
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set-space-info-location! set-space-info-cell!
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set-space-info-channel! set-space-info-port!
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set-space-info-ratnum! set-space-info-record!
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set-space-info-continuation! set-space-info-extended-number!
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set-space-info-template! set-space-info-weak-pointer!
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set-space-info-shared-binding! set-space-info-unused-d-header1!
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set-space-info-unused-d-header2! set-space-info-string!
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set-space-info-byte-vector! set-space-info-double!
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set-space-info-bignum! set-space-info-total!
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pure-count pure-bytes
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impure-count impure-bytes
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total-count total-bytes
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))
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;; Handling every condition
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(define-interface handle-fatal-interface
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(export with-fatal-handler*
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(with-fatal-handler :syntax)))
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;; Thread-safe counter
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(define-interface thread-safe-counter-interface
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(export make-thread-safe-counter
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thread-safe-counter-value
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thread-safe-counter-next!
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thread-safe-counter?))
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;; SUrflet-requests as expected from the surflet handler
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(define-interface surflet-requests-interface
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(export make-surflet-request
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surflet-request?
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surflet-request-request
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surflet-request-input-port
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surflet-request-method
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surflet-request-uri
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surflet-request-url
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surflet-request-version
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surflet-request-headers
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surflet-request-socket))
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;; These two are from Martin Gasbichler:
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(define-interface rt-module-language-interface
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(export ((lambda-interface
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with-names-from-rt-structure)
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:syntax)
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reify-structure
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load-structure
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load-config-file
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rt-structure-binding))
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(define-interface rt-modules-interface
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(export interface-value-names
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reify-structure
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load-config-file
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rt-structure-binding
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load-structure))
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;;; Structures (GREP)
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;; structures from SUrflet Handler
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(define-structures
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((surflet-handler surflet-handler-interface)
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(surflet-handler/surflets surflet-handler/surflets-interface)
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(surflet-handler/admin surflet-handler/admin-interface)
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(surflet-handler/responses surflet-handler/responses-interface))
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(open define-record-types ;DEFINE-RECORD-TYPE
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handle-fatal ;WITH-FATAL-ERROR-HANDLER* et al.
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handle-fatal-error
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httpd-errors ;errors for httpd
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httpd-logging ;HTTP-SYSLOG
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httpd-requests ;requests from httpd
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httpd-responses ;replies for httpd
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locks ;MAKE-LOCK et al.
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profiling ;PROFILE-SPACE
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rt-module-language ;get structures dynamically
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scheme-with-scsh ;regexp et al.
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shift-reset ;SHIFT and RESET
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srfi-6 ;string-ports
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srfi-14 ;CHAR-SET:DIGIT
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srfi-27 ;random numbers
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surflet-requests ;requests for surflets
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sxml-to-html ;SXML->HTML
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tables ;HASH-TABLES
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thread-cells ;THREAD-CELL et al.
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thread-fluids ;FORK-THREAD
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thread-safe-counter
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threads ;SLEEP
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uri ;URI-PATH-LIST->PATH
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)
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(files surflet-handler))
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;; SUrflets library of helping functions
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(define-structure surflets surflets-interface
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(open surflet-handler/surflets
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surflet-handler/responses
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surflet-handler/admin
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httpd-responses ; STATUS-CODE
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surflet-requests ; HTTP-URL:SEARCH
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url ; REQUEST:URL
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(subset uri (escape-uri unescape-uri))
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parse-html-forms
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sxml-to-html ; SXML->HTML
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srfi-1 ; FILTER
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(subset srfi-13 (string-index))
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sxml-tree-trans
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define-record-types
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weak ;MAKE-WEAK-POINTER
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locks
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let-opt ;:OPTIONAL
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handle-fatal-error
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(subset sunet-utilities (get-header)) ; GET-HEADER
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scheme-with-scsh)
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(files surflets))
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;; Shift-Reset
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(define-structure shift-reset shift-reset-interface
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(open scheme
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signals
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escapes
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thread-cells)
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(files shift-reset))
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;; Measuring memory usage.
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(define-structure profiling profiling-interface
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(open let-opt
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define-record-types
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spatial
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srfi-13
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srfi-1
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locks
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scheme-with-scsh)
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(files profile))
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;; Simple Surflet API as known from PLT.
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(define-structure simple-surflet-api simple-surflet-api-interface
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(open scheme-with-scsh
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define-record-types
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let-opt
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surflets
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(subset srfi-1 (zip filter find make-list))
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handle-fatal-error
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)
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(files simple-surflet-api))
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;; Handling every condition
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(define-structure handle-fatal handle-fatal-interface
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(open scheme conditions handle)
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(files handle-fatal))
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;; Thread-safe counter
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(define-structure thread-safe-counter thread-safe-counter-interface
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(open scheme
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locks
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define-record-types)
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(files thread-safe-counter))
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;; SUrflet-requests as expected from the SUrflet handler
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(define-structure surflet-requests surflet-requests-interface
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(open scheme
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define-record-types
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httpd-requests)
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(files surflet-request))
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;; These two are from Martin Gasbichler:
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(define-structure rt-module-language rt-module-language-interface
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(open scheme
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rt-modules)
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(for-syntax (open scheme
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rt-modules))
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(begin
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(define-syntax lambda-interface
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(lambda (expr rename compare)
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(let ((%lambda (rename 'lambda))
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(interface-name (cadr expr))
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(body (cddr expr)))
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`(,%lambda ,(interface-value-names interface-name) ,@body))))
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;(with-names-from-rt-structure surflet surflet-interface (main))
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(define-syntax with-names-from-rt-structure
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(lambda (expr rename compare)
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(let ((%lambda (rename 'lambda))
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(%let (rename 'let))
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(%rt-structure-value (rename 'rt-structure-value))
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(%rt-structure-binding (rename 'rt-structure-binding))
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(rt-structure (cadr expr))
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(interface-name (caddr expr))
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(body (cdddr expr)))
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(let ((ivn (interface-value-names interface-name)))
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`(,%let ((,%rt-structure-value ,rt-structure))
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((,%lambda ,ivn ,@body)
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,@(map (lambda (name)
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`(,%rt-structure-binding ,%rt-structure-value ',name))
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ivn)))))))))
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(define-structure rt-modules rt-modules-interface
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(open scheme
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meta-types ; syntax-type
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interfaces ; for-each-declaration
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define-record-types
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records
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signals
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bindings
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packages
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packages-internal
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locations
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environments
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ensures-loaded
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package-commands-internal)
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(files rt-module))
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