tcl::transform::observeReflected/virtual channel suptcl::transform::observe(n)______________________________________________________________________________NAME
tcl::transform::observe - Observer transformation, stream copy
SYNOPSIS
package require Tcl 8.6
package require tcl::transform::core ?1?
package require tcl::transform::observe ?1?
::tcl::transform::observe chan logw logr
_________________________________________________________________DESCRIPTION
The tcl::transform::observer package provides a command creating a
channel transformation which passes the read and written bytes through
unchanged (like tcl::transform::identity), but additionally copies the
data it has seen for each direction into channels specified at con‐
struction time.
Related transformations in this module are tcl::transform::adler32,
tcl::transform::counter, tcl::transform::crc32, and tcl::trans‐
form::identity.
The internal TclOO class implementing the transform handler is a sub-
class of the tcl::transform::core framework.
API
::tcl::transform::observe chan logw logr
This command creates an observer transformation on top of the
channel chan and returns its handle. The channel handles logr
and logw are there the data is copied to.
BUGS, IDEAS, FEEDBACK
This document, and the package it describes, will undoubtedly contain
bugs and other problems. Please report such in the category virtchan‐
nel 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
channel transformation, observer, reflected channel, stream copy, tip
230, transformation, virtual channel
CATEGORY
Channels
COPYRIGHT
Copyright (c) 2009 Andreas Kupries <andreas_kupries@users.sourceforge.net>
virtchannel_transform 1 tcl::transform::observe(n)
