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Re: drain-input

From: Alex Shinn
Subject: Re: drain-input
Date: 30 Aug 2001 02:19:30 -0400
User-agent: Gnus/5.0808 (Gnus v5.8.8) Emacs/21.0.104

>>>>> "Rob" == Rob Browning <address@hidden> writes:

    Rob> Seems like you might get a lot better performance if you read
    Rob> in chunks and then used string-concatenate(-reverse) from
    Rob> srfi-19 or similar.  Actually, if read-delimited is
    Rob> implemented with special casing, you might get good results
    Rob> with just (read-delimited "" port).

For the particular problem of getting the contents of a file as a
string, I ended up doing

(define (file-contents file)
  (call-with-input-file file
    (lambda (p)
      (let* ((size (stat:size (stat p)))
             (buf (make-string size)))
        (read-string!/partial buf p)

but this doesn't work for draining arbitrary ports.  For this reading
by chunks or (read-delimited "" port) is probably best.

Alex Shinn <address@hidden>

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