'\"
'\" Generated from file 'cmdr_ask\&.man' by tcllib/doctools with format 'nroff'
'\" Copyright (c) 2013-2016 Andreas Kupries
'\" Copyright (c) 2013-2016 Documentation, Andreas Kupries
'\"
.TH "cmdr::ask" n 1 doc "Cmdr, a framework for command line parsing and dispatch"
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.BS
.SH NAME
cmdr::ask \- Cmdr - Terminal-based simple user interactions
.SH SYNOPSIS
package require \fBcmdr::color \fR
.sp
package require \fBlinenoise \fR
.sp
package require \fBstruct::matrix \fR
.sp
package require \fBtextutil::adjust \fR
.sp
package require \fBtry \fR
.sp
package require \fBcmdr::ask \fR
.sp
\fB::cmdr::ask\fR \fBstring\fR \fIquery\fR ?\fIdefault\fR?
.sp
\fB::cmdr::ask\fR \fBstring/extended\fR \fIquery\fR ?options\&.\&.\&.?
.sp
\fB::cmdr::ask\fR \fBstring*\fR \fIquery\fR
.sp
\fB::cmdr::ask\fR \fByn\fR \fIquery\fR ?\fIdefault\fR?
.sp
\fB::cmdr::ask\fR \fBchoose\fR \fIquery\fR \fIchoices\fR ?\fIdefault\fR?
.sp
\fB::cmdr::ask\fR \fBmenu\fR \fIheader\fR \fIprompt\fR \fIchoices\fR ?\fIdefault\fR?
.sp
.BE
.SH DESCRIPTION
.PP
Welcome to the Cmdr project, written by Andreas Kupries\&.
.PP
For availability please read \fICmdr - How To Get The Sources\fR\&.
.PP
This package provides a few utility commands implementing a few simple
terminal-based interactions with the user\&.
.SH API
.TP
\fB::cmdr::ask\fR \fBstring\fR \fIquery\fR ?\fIdefault\fR?
When invoked this command prompts the user with \fIquery\fR for a string\&.
If the \fIdefault\fR is specified and not the empty string it is also
shown as part of the prompt\&. Note that \fIdefault\fR defaults to the
empty string\&.
.sp
The interactively entered string is returned as the result of the
command\&. The \fIdefault\fR is returned as the result if the user entered
an empty string and the \fIdefault\fR is not empty\&.
.RS
.TP
string \fIquery\fR
The prompt to show to the user before interaction begins\&.
.TP
string \fIdefault\fR
The default to return if the user enters nothing\&.
.RE
.TP
\fB::cmdr::ask\fR \fBstring/extended\fR \fIquery\fR ?options\&.\&.\&.?
This command is similar to \fB::cmdr::ask string\fR, except it allows for
more customization of the interaction through options\&.
.sp
The accepted options are
.RS
.TP
\fB-history\fR boolean
If \fBtrue\fR, save user input into \fBlinenoise\fR's in-memory history\&. Default is \fBfalse\fR\&.
.TP
\fB-hidden\fR boolean
If \fBtrue\fR, input is hidden\&. Default is \fBfalse\fR, visible echo\&.
.TP
\fB-complete\fR cmdprefix
If not empty, installed as completion callback\&.
.TP
\fB-default\fR string
If not empty the string to return if the user enters the empty string\&.
.RE
.RS
.TP
string \fIquery\fR
The prompt to show to the user before interaction begins\&.
.RE
.TP
\fB::cmdr::ask\fR \fBstring*\fR \fIquery\fR
Behaves like \fB::cmdr::ask string\fR without a default, except that the user's
input is not echoed back to the terminal\&. This command is for the entry of hidden
strings, i\&.e\&. passwords, and the like\&.
.RS
.TP
string \fIquery\fR
The prompt to show to the user before interaction begins\&.
.RE
.TP
\fB::cmdr::ask\fR \fByn\fR \fIquery\fR ?\fIdefault\fR?
When invoked this command prompts the user with \fIquery\fR for a \fIboolean\fR
value/string\&. If the \fIdefault\fR is specified and not the empty string it is
also shown as part of the prompt\&. Note that \fIdefault\fR defaults to the empty
string\&.
.sp
The interactively entered boolean is returned as the result of the command\&.
The \fIdefault\fR boolean is returned as the result if the user entered an empty
string and the \fIdefault\fR is not empty\&.
.sp
Note that the command will not return until the user entered a valid
boolean value\&. Entering a non-boolean string causes the command to loop internally
and re-prompt\&.
.RS
.TP
string \fIquery\fR
The prompt to show to the user before interaction begins\&.
.TP
string \fIdefault\fR
The default boolean to return if the user enters nothing\&.
.RE
.TP
\fB::cmdr::ask\fR \fBchoose\fR \fIquery\fR \fIchoices\fR ?\fIdefault\fR?
When invoked this command prompts the user with \fIquery\fR for one of the
\fIchoices\fR, entered as string\&. Prompt and input happen on a single line\&.
.sp
The interactively entered choice is returned as the result of the command\&.
The \fIdefault\fR choice is returned as the result if the user entered an empty
string and the \fIdefault\fR is not empty\&.
.sp
Note that the command will not return until the user entered a valid
choice\&. Entering a non-choice causes the command to loop internally and re-prompt\&.
The user is supported in entry by an internal completion callback\&.
.RS
.TP
string \fIquery\fR
The prompt to show to the user before interaction begins\&.
.TP
string \fIdefault\fR
The default boolean to return if the user enters nothing\&.
.RE
.TP
\fB::cmdr::ask\fR \fBmenu\fR \fIheader\fR \fIprompt\fR \fIchoices\fR ?\fIdefault\fR?
Similar to \fB::cmdr::ask choose\fR, except that the \fIchoices\fR are shown
as an enumerated menu, one per line, with a leading \fIheader\fR\&.
Furthermore the command accepts not only the choices as input, but also their
numeric indices in the menu\&. The result however is always the relevant chosen string\&.
.PP
.SH "BUGS, IDEAS, FEEDBACK"
Both the package(s) and this documentation will undoubtedly contain
bugs and other problems\&.
Please report such at
\fICmdr Tickets\fR [https:/core\&.tcl\&.tk/akupries/cmdr]\&.
.PP
Please also report any ideas you may have for enhancements of
either package(s) and/or documentation\&.
.SH KEYWORDS
arguments, command hierarchy, command line completion, command line handling, command tree, editing command line, help for command line, hierarchy of commands, interactive command shell, optional arguments, options, parameters, processing command line, tree of commands
.SH COPYRIGHT
.nf
Copyright (c) 2013-2016 Andreas Kupries
Copyright (c) 2013-2016 Documentation, Andreas Kupries

.fi