'\" '\" Generated from file 'term_bind\&.man' by tcllib/doctools with format 'nroff' '\" Copyright (c) 2006 Andreas Kupries '\" .TH "term::receive::bind" 3tcl 0\&.1 tcllib "Terminal control" .\" The -*- nroff -*- definitions below are for supplemental macros used .\" in Tcl/Tk manual entries. .\" .\" .AP type name in/out ?indent? .\" Start paragraph describing an argument to a library procedure. .\" type is type of argument (int, etc.), in/out is either "in", "out", .\" or "in/out" to describe whether procedure reads or modifies arg, .\" and indent is equivalent to second arg of .IP (shouldn't ever be .\" needed; use .AS below instead) .\" .\" .AS ?type? ?name? .\" Give maximum sizes of arguments for setting tab stops. Type and .\" name are examples of largest possible arguments that will be passed .\" to .AP later. If args are omitted, default tab stops are used. .\" .\" .BS .\" Start box enclosure. From here until next .BE, everything will be .\" enclosed in one large box. .\" .\" .BE .\" End of box enclosure. .\" .\" .CS .\" Begin code excerpt. .\" .\" .CE .\" End code excerpt. .\" .\" .VS ?version? ?br? .\" Begin vertical sidebar, for use in marking newly-changed parts .\" of man pages. The first argument is ignored and used for recording .\" the version when the .VS was added, so that the sidebars can be .\" found and removed when they reach a certain age. If another argument .\" is present, then a line break is forced before starting the sidebar. .\" .\" .VE .\" End of vertical sidebar. .\" .\" .DS .\" Begin an indented unfilled display. .\" .\" .DE .\" End of indented unfilled display. .\" .\" .SO ?manpage? .\" Start of list of standard options for a Tk widget. The manpage .\" argument defines where to look up the standard options; if .\" omitted, defaults to "options". The options follow on successive .\" lines, in three columns separated by tabs. .\" .\" .SE .\" End of list of standard options for a Tk widget. .\" .\" .OP cmdName dbName dbClass .\" Start of description of a specific option. cmdName gives the .\" option's name as specified in the class command, dbName gives .\" the option's name in the option database, and dbClass gives .\" the option's class in the option database. .\" .\" .UL arg1 arg2 .\" Print arg1 underlined, then print arg2 normally. .\" .\" .QW arg1 ?arg2? .\" Print arg1 in quotes, then arg2 normally (for trailing punctuation). .\" .\" .PQ arg1 ?arg2? .\" Print an open parenthesis, arg1 in quotes, then arg2 normally .\" (for trailing punctuation) and then a closing parenthesis. .\" .\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages. .if t .wh -1.3i ^B .nr ^l \n(.l .ad b .\" # Start an argument description .de AP .ie !"\\$4"" .TP \\$4 .el \{\ . ie !"\\$2"" .TP \\n()Cu . el .TP 15 .\} .ta \\n()Au \\n()Bu .ie !"\\$3"" \{\ \&\\$1 \\fI\\$2\\fP (\\$3) .\".b .\} .el \{\ .br .ie !"\\$2"" \{\ \&\\$1 \\fI\\$2\\fP .\} .el \{\ \&\\fI\\$1\\fP .\} .\} .. .\" # define tabbing values for .AP .de AS .nr )A 10n .if !"\\$1"" .nr )A \\w'\\$1'u+3n .nr )B \\n()Au+15n .\" .if !"\\$2"" .nr )B \\w'\\$2'u+\\n()Au+3n .nr )C \\n()Bu+\\w'(in/out)'u+2n .. .AS Tcl_Interp Tcl_CreateInterp in/out .\" # BS - start boxed text .\" # ^y = starting y location .\" # ^b = 1 .de BS .br .mk ^y .nr ^b 1u .if n .nf .if n .ti 0 .if n \l'\\n(.lu\(ul' .if n .fi .. .\" # BE - end boxed text (draw box now) .de BE .nf .ti 0 .mk ^t .ie n \l'\\n(^lu\(ul' .el \{\ .\" Draw four-sided box normally, but don't draw top of .\" box if the box started on an earlier page. .ie !\\n(^b-1 \{\ \h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul' .\} .el \}\ \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul' .\} .\} .fi .br .nr ^b 0 .. .\" # VS - start vertical sidebar .\" # ^Y = starting y location .\" # ^v = 1 (for troff; for nroff this doesn't matter) .de VS .if !"\\$2"" .br .mk ^Y .ie n 'mc \s12\(br\s0 .el .nr ^v 1u .. .\" # VE - end of vertical sidebar .de VE .ie n 'mc .el \{\ .ev 2 .nf .ti 0 .mk ^t \h'|\\n(^lu+3n'\L'|\\n(^Yu-1v\(bv'\v'\\n(^tu+1v-\\n(^Yu'\h'-|\\n(^lu+3n' .sp -1 .fi .ev .\} .nr ^v 0 .. .\" # Special macro to handle page bottom: finish off current .\" # box/sidebar if in box/sidebar mode, then invoked standard .\" # page bottom macro. .de ^B .ev 2 'ti 0 'nf .mk ^t .if \\n(^b \{\ .\" Draw three-sided box if this is the box's first page, .\" draw two sides but no top otherwise. .ie !\\n(^b-1 \h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c .el \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c .\} .if \\n(^v \{\ .nr ^x \\n(^tu+1v-\\n(^Yu \kx\h'-\\nxu'\h'|\\n(^lu+3n'\ky\L'-\\n(^xu'\v'\\n(^xu'\h'|0u'\c .\} .bp 'fi .ev .if \\n(^b \{\ .mk ^y .nr ^b 2 .\} .if \\n(^v \{\ .mk ^Y .\} .. .\" # DS - begin display .de DS .RS .nf .sp .. .\" # DE - end display .de DE .fi .RE .sp .. .\" # SO - start of list of standard options .de SO 'ie '\\$1'' .ds So \\fBoptions\\fR 'el .ds So \\fB\\$1\\fR .SH "STANDARD OPTIONS" .LP .nf .ta 5.5c 11c .ft B .. .\" # SE - end of list of standard options .de SE .fi .ft R .LP See the \\*(So manual entry for details on the standard options. .. .\" # OP - start of full description for a single option .de OP .LP .nf .ta 4c Command-Line Name: \\fB\\$1\\fR Database Name: \\fB\\$2\\fR Database Class: \\fB\\$3\\fR .fi .IP .. .\" # CS - begin code excerpt .de CS .RS .nf .ta .25i .5i .75i 1i .. .\" # CE - end code excerpt .de CE .fi .RE .. .\" # UL - underline word .de UL \\$1\l'|0\(ul'\\$2 .. .\" # QW - apply quotation marks to word .de QW .ie '\\*(lq'"' ``\\$1''\\$2 .\"" fix emacs highlighting .el \\*(lq\\$1\\*(rq\\$2 .. .\" # PQ - apply parens and quotation marks to word .de PQ .ie '\\*(lq'"' (``\\$1''\\$2)\\$3 .\"" fix emacs highlighting .el (\\*(lq\\$1\\*(rq\\$2)\\$3 .. .\" # QR - quoted range .de QR .ie '\\*(lq'"' ``\\$1''\\-``\\$2''\\$3 .\"" fix emacs highlighting .el \\*(lq\\$1\\*(rq\\-\\*(lq\\$2\\*(rq\\$3 .. .\" # MT - "empty" string .de MT .QW "" .. .BS .SH NAME term::receive::bind \- Keyboard dispatch from terminals .SH SYNOPSIS package require \fBTcl 8\&.4\fR .sp package require \fBterm::receive::bind ?0\&.1?\fR .sp \fBterm::receive::bind\fR \fIobject\fR ?\fImap\fR? .sp \fIobject\fR \fBmap\fR \fIstr\fR \fIcmd\fR .sp \fIobject\fR \fBdefault\fR \fIcmd\fR .sp \fIobject\fR \fBlisten\fR ?\fIchan\fR? .sp \fIobject\fR \fBunlisten\fR ?\fIchan\fR? .sp \fIobject\fR \fBreset\fR .sp \fIobject\fR \fBnext\fR \fIchar\fR .sp \fIobject\fR \fBprocess\fR \fIstr\fR .sp \fIobject\fR \fBeof\fR .sp .BE .SH DESCRIPTION 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\&. .SH "CLASS API" The package exports a single command, the class command, enabling the creation of dispatcher instances\&. Its API is: .TP \fBterm::receive::bind\fR \fIobject\fR ?\fImap\fR? This command creates a new dispatcher object with the name \fIobject\fR, initializes it, and returns the fully qualified name of the object command as its result\&. .sp 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\&. .PP .SH "OBJECT API" The objects created by the class command provide the methods listed below: .TP \fIobject\fR \fBmap\fR \fIstr\fR \fIcmd\fR This method adds an additional mapping from the string \fIstr\fR to the action \fIcmd\fR\&. The mapping will take effect immediately should the processor be in a prefix of \fIstr\fR, 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\&. .TP \fIobject\fR \fBdefault\fR \fIcmd\fR This method defines a default action \fIcmd\fR 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 \fBmap\fR\&. .TP \fIobject\fR \fBlisten\fR ?\fIchan\fR? This methods sets up a filevent listener for the channel with handle \fIchan\fR and invokes the dispatcher object whenever characters have been received, or EOF was reached\&. .sp If not specified \fIchan\fR defaults to \fBstdin\fR\&. .TP \fIobject\fR \fBunlisten\fR ?\fIchan\fR? This methods removes the filevent listener for the channel with handle \fIchan\fR\&. .sp If not specified \fIchan\fR defaults to \fBstdin\fR\&. .TP \fIobject\fR \fBreset\fR This method resets the character processor to the beginning of the tree\&. .TP \fIobject\fR \fBnext\fR \fIchar\fR This method causes the character processor to process the character \fIc\fR\&. This may simply advance the internal state, or invoke an associated action for a recognized sequence\&. .TP \fIobject\fR \fBprocess\fR \fIstr\fR This method causes the character processor to process the character sequence \fIstr\fR, advancing the internal state and invoking action as necessary\&. This is a callback for \fBlisten\fR\&. .TP \fIobject\fR \fBeof\fR This method causes the character processor to handle EOF on the input\&. This is currently no-op\&. This is a callback for \fBlisten\fR\&. .PP .SH NOTES 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\&. .PP In other words, the set of recognized strings has to form a \fIprefix code\fR\&. .SH "BUGS, IDEAS, FEEDBACK" This document, and the package it describes, will undoubtedly contain bugs and other problems\&. Please report such in the category \fIterm\fR of the \fITcllib Trackers\fR [http://core\&.tcl\&.tk/tcllib/reportlist]\&. Please also report any ideas for enhancements you may have for either package and/or documentation\&. .PP When proposing code changes, please provide \fIunified diffs\fR, i\&.e the output of \fBdiff -u\fR\&. .PP Note further that \fIattachments\fR are strongly preferred over inlined patches\&. Attachments can be made by going to the \fBEdit\fR form of the ticket immediately after its creation, and then using the left-most button in the secondary navigation bar\&. .SH KEYWORDS character input, control, dispatcher, listener, receiver, terminal .SH CATEGORY Terminal control .SH COPYRIGHT .nf Copyright (c) 2006 Andreas Kupries .fi