On Feb 28, 2005, at 1:26 PM, Alexandre Saidi wrote:
I'm looking for how to redirect things displayed under Gnu Prolog.
Call current_input/1 or current_output/1 with a variable to get the name of the current input or output stream, respectively.
Use open/4 or open/3 to create a "stream" and get an atom X identifying it, then
use set_input/1 or set_output/1 with X.
When done with the redirected stream, use set_input/1 or set_output/1 to restore the original stream.
Finally, call close/1 on the stream X. (See sections 7.10.1 through 7.10.7 in the GProlog manual.)
The deprecated, but simpler, way to do all of this is to use see/1, seeing/1, seen to handle the input stream redirection and tell/1, telling/1, told to handle the output stream redirection. (Section 7.16)
HTH, Lindsey Spratt http://homepage.mac.com/~lspratt
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