21 lines
771 B
Scheme
21 lines
771 B
Scheme
(define-c-library libc '("stdio.h") #f ())
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(define-c-procedure c-fopen libc 'fopen 'pointer '(pointer pointer))
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;(define-c-procedure c-fputs libc 'fputs 'int '(pointer pointer))
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(define-c-procedure c-fputc libc 'fputc 'int '(int pointer))
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(define-c-procedure c-fclose libc 'fclose 'int '(pointer))
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(define mode-cbv (string->c-bytevector "a"))
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(define (with-append-to-file path thunk)
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(let* ((path-cbv (string->c-bytevector path))
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(file-cbv (c-fopen path-cbv mode-cbv)))
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(string-for-each
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(lambda (c)
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(c-fputc (char->integer c) file-cbv))
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(parameterize ((current-output-port (open-output-string)))
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(apply thunk '())
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(get-output-string (current-output-port))))
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(c-fclose file-cbv)
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(c-bytevector-free path-cbv)))
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