45 lines
1.1 KiB
Scheme
45 lines
1.1 KiB
Scheme
(define-structure surflet surflet-interface
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(open scheme-with-scsh
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surflets)
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(begin
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(define *news* '())
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(define (read-news news-file-name)
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(close-after (open-input-file news-file-name)
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(lambda (news-input)
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(let loop ((next-line (read-line news-input))
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(news '()))
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(if (eof-object? next-line)
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news
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(loop (read-line news-input)
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(cons next-line news)))))))
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(define (main req)
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(if (null? *news*)
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(set! *news* (read-news "news.txt")))
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(let loop ((news *news*))
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(if (null? news)
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(show-final-page)
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(begin
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(show-news-page (car news))
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(loop (cdr news))))))
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(define (show-final-page)
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(send-html/finish
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`(html (body (p (h1 "THAT'S IT"))
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(p ("That's it..."))
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(hr)
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(p (url "news.scm" "See news again.") (br)
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(url "/" "Return to main menu."))))))
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(define (show-news-page news)
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(send-html/suspend
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(lambda (next-url)
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`(html (body (p (h1 ,news))
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(a (@ href ,next-url) "read more...")
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(hr)
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(p (url "news.scm" "See news again from beginning.") (br)
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(url "/" "Return to main menu.")))))))
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))
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