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35 lines
1.1 KiB
Racket
35 lines
1.1 KiB
Racket
#lang racket/base
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(require (for-syntax racket/base
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racket/list
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syntax/parse)
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(only-in scribble/text/syntax-utils include/text)
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(only-in "output.rkt" output)
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racket/match
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racket/port)
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(provide include-template)
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;; Adaptation of function in web-server/templates library
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;; to check for binary result and pass it through.
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;; Actually patches underlying bug in `output`.
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(define (finish result)
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(match result
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[(? bytes? bs) bs]
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;; list of expressions with byte string in last place.
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;; infer that user is trying to return a binary as the last value in a template,
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;; and treat it as a single binary value.
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[(list _ ... (? bytes? bs)) bs]
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[_ (with-output-to-string (λ () (output result)))]))
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(define-syntax (include-template stx)
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(syntax-parse stx
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[(_ (~optional (~seq #:command-char command-char:expr)) src:expr)
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(quasisyntax/loc stx
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(finish (include/text #,@(if (attribute command-char)
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(list #'#:command-char #'command-char)
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empty)
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src)))]))
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