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term::receive(n) Terminal control term::receive(n)
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NAME
term::receive - General input from terminals
SYNOPSIS
package require Tcl 8.4
package require term::receive ?0.1?
::term::receive::getch ?chan?
::term::receive::listen cmd ?chan?
cmd process string
cmd eof
::term::receive::unlisten ?chan?
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DESCRIPTION
This package provides the most primitive commands for receiving characters to a terminal. They are in
essence convenient wrappers around the builtin commands read and fileevent.
::term::receive::getch ?chan?
This command reads a single character from the channel with handle chan and returns it as the
result of the command.
If not specified chan defaults to stdin.
It is the responsibility of the caller to make sure that the channel can provide single char-acters. characters.
acters. On unix this can be done, for example, by using the command of package
term::ansi::ctrl::unix.
::term::receive::listen cmd ?chan?
This command sets up a filevent listener for the channel with handle chan and invokes the com-mand command
mand prefix cmd whenever characters have been received, or EOF was reached.
If not specified chan defaults to stdin.
The signature of the command prefix is
cmd process string
This method is invoked when characters were received, and string holds them for pro-cessing. processing.
cessing.
cmd eof
This method is invoked when EOF was reached on the channel we listen on. It will be
the last call to be received by the callback.
::term::receive::unlisten ?chan?
This command disables the filevent listener for the channel with handle chan.
If not specified chan defaults to stdin.
BUGS, IDEAS, FEEDBACK
This document, and the package it describes, will undoubtedly contain bugs and other problems.
Please report such in the category term of the Tcllib SF Trackers [http://source-
forge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have for
either package and/or documentation.
KEYWORDS
character input, control, get character, listener, receiver, terminal
COPYRIGHT
Copyright (c) 2006 Andreas Kupries <andreas_kupries@users.sourceforge.net>
term 0.1 term::receive(n)
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