How to do channel redirection?
in [TCL]
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From: pmarin on 22 Dec 2009 06:42 I often need to redirect a tcl function/command that write to the stdout, to another channel. For example if I want to convert the output of a command to a string (It could be very easy to do If I can do channel redirection). How can I do it? Example: Imagine the command "toString": >set output [toString { puts "hello"} ] >set output "hello" Cheers. Happy Christmas! pmarin.
From: Jan Kandziora on 22 Dec 2009 09:26
pmarin schrieb: > I often need to redirect a tcl function/command that write to the > stdout, to another channel. > For example if I want to convert the output of a command to a string > (It could be very easy to do If I can do channel redirection). > How can I do it? > If you only need to capture puts (not fcopy or others), easiest way is to redefine the puts procedure. See http://wiki.tcl.tk/8502 for an example which redirects all puts output to a text widget. Kind regards Jan |