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@(do
(defun stream-positioned-to-right-place (name)
(let* ((stream (open-file name "r+b"))
(pre (progn (stream-set-prop stream :byte-oriented t)
(read-until-match #/@\(txr\)/ stream t))))
(when (or (empty pre) (not (search-str pre "@(txr)")))
(throwf 'error "~a isn't a TXR executable" name))
stream)))
@(next :args)
@(cases)
-w
@string
@file
@ (eof)
@ (do
(let* ((f (stream-positioned-to-right-place file))
(b (ffi-put string (ffi (zarray 128 char)))))
(put-buf b 0 f)))
@(or)
@file
@ (eof)
@ (do
(let ((f (stream-positioned-to-right-place file))
(b (make-buf 128)))
(fill-buf b 0 f)
(put-line (ffi-get b (ffi (zarray 128 char))))))
@(or)
@ (output)
usage: @{self-path} [-w string] txr-executable
@ (end)
@ (do (exit 1))
@(end)
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