term::receive::bind - Keyboard dispatch from terminals

       This document, and the package it describes, will undoubtedly contain bugs and  other  problems.   Please
       report  such  in the category term of the TcllibTrackers [http://core.tcl.tk/tcllib/reportlist].  Please
       also report any ideas for enhancements you may have for either package and/or documentation.

       When proposing code changes, please provide unifieddiffs, i.e the output of diff-u.

       Note further that attachments are strongly preferred over inlined patches. Attachments  can  be  made  by
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       Terminal control

       The  package  exports a single command, the class command, enabling the creation of dispatcher instances.
       Its API is:

       term::receive::bindobject ?map?
              This command creates a new dispatcher object with the name object, initializes it, and returns the
              fully qualified name of the object command as its result.

              The argument is a dictionary mapping  from  strings,  i.e.  character  sequences  to  the  command
              prefices to invoke when the sequence is found in the input stream.

       Copyright (c) 2006 Andreas Kupries <andreas_kupries@users.sourceforge.net>

tcllib                                                 0.2                             term::receive::bind(3tcl)

       This package provides a class for the creation of simple dispatchers from character sequences to actions.
       Internally each dispatcher is in essence a deterministic finite automaton with tree structure.

       character input, control, dispatcher, listener, receiver, terminal

       term::receive::bind - Keyboard dispatch from terminals

       The  simplicity  of  the  DFA  means that it is not possible to recognize a character sequence with has a
       another recognized character sequence as its prefix.

       In other words, the set of recognized strings has to form a prefixcode.

       The objects created by the class command provide the methods listed below:

       objectmapstrcmd
              This  method  adds  an  additional mapping from the string str to the action cmd. The mapping will
              take effect immediately should the processor be  in  a  prefix  of  str,  or  at  the  next  reset
              operation.  The  action  is a command prefix and will be invoked with one argument appended to it,
              the character sequence causing the invokation. It is executed in the global namespace.

       objectdefaultcmd
              This method defines a default action cmd which will  be  invoked  whenever  an  unknown  character
              sequence  is  encountered. The command prefix is handled in the same as the regular action defined
              via method map.

       objectlisten ?chan?
              This methods sets up a filevent listener  for  the  channel  with  handle  chan  and  invokes  the
              dispatcher object whenever characters have been received, or EOF was reached.

              If not specified chan defaults to stdin.

       objectunlisten ?chan?
              This methods removes the filevent listener for the channel with handle chan.

              If not specified chan defaults to stdin.

       objectreset
              This method resets the character processor to the beginning of the tree.

       objectnextchar
              This method causes the character processor to process the character c. This may simply advance the
              internal state, or invoke an associated action for a recognized sequence.

       objectprocessstr
              This  method  causes  the character processor to process the character sequence str, advancing the
              internal state and invoking action as necessary. This is a callback for listen.

       objecteof
              This method causes the character processor to handle EOF on the input. This  is  currently  no-op.
              This is a callback for listen.

       package require Tcl8.59

       package require term::receive::bind?0.2?term::receive::bindobject ?map?

       objectmapstrcmdobjectdefaultcmdobjectlisten ?chan?

       objectunlisten ?chan?

       objectresetobjectnextcharobjectprocessstrobjecteof

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