29 lines
905 B
Scheme
29 lines
905 B
Scheme
(module read-doc mzscheme
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(require (lib "etc.ss")
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(lib "getinfo.ss" "setup")
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"util.ss"
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"read-lines.ss"
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"html.ss")
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(provide read-doc)
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;; extracts help desk message
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(define (get-message coll)
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(with-handlers ([void (lambda _ #f)]) ; collection may not exist
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((get-info (list coll)) 'help-desk-message (lambda () #f))))
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(define offset-format "file=~a&caption=~a&offset=~a#temp")
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(define (build-page file caption coll offset)
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(let ([msg (get-message coll)])
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(html-page
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#:title "PLT Help Desk"
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#:bodies (if msg
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`(,(format-collection-message msg)
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(hr)
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,(read-lines file caption offset))
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`(,(read-lines file caption offset))))))
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(define read-doc
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(opt-lambda (file caption coll [offset #f])
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(build-page file caption coll offset))))
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