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tcl::transform::counter - Counter transformation
package require Tcl 8.6
package require tcl::transform::core ?1?
package require tcl::transform::counter ?1?
The tcl::transform::counterr package provides a command creating a channel transformation which passes the read and written bytes through unchanged (like tcl::transform::identity), but additionally counts the bytes it has seen for each direction and stores these counts in Tcl variables specified at construction time.
This command creates a counter transformation on top of the channel chan and returns its handle. The accepted options are
The value of the option is the name of a global or namespaced variable, the location where the transformation has to store the byte count of the data read from the channel.
If not specified, or the empty string, the counter of the read direction is not saved.
The value of the option is the name of a global or namespaced variable, the location where the transformation has to store the byte count of the data written to the channel.
If not specified, or the empty string, the counter of the write direction is not saved.
This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category virtchannel of the Tcllib Trackers. Please also report any ideas for enhancements you may have for either package and/or documentation.
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Copyright © 2009 Andreas Kupries