'\"
'\" Generated from file 'cmdr_validate\&.man' by tcllib/doctools with format 'nroff'
'\" Copyright (c) 2013-2016 Andreas Kupries
'\" Copyright (c) 2013-2016 Documentation, Andreas Kupries
'\"
.TH "cmdr::validate" n 1\&.3\&.1 doc "Cmdr, a framework for command line parsing and dispatch"
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.BS
.SH NAME
cmdr::validate \- Cmdr - Standard validation types for parameters
.SH SYNOPSIS
package require \fBcmdr::validate \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
.PP
Validation types are Cmdr's answer to the necessity of
moving between the string and internal representations of
\fBcmdr::parameter\fR instances\&.
.PP
This internal package implements the twelve standard validation
types shown below\&. The \fBvalidate\fR command of the parameter
declaration DSL can use these by name\&. Non-standard types have to
provide a proper command prefix instead\&.
.PP
Readers interested in writing their own custom validation types
should read \fICmdr - Writing custom validation types\fR\&.
.SH "STANDARD TYPES"
.TP
boolean
Completable\&. Accepts a Tcl boolean\&.
.TP
identity
.TP
pass
.TP
str
Infinite\&.    Accepts all strings\&.
.TP
integer
Infinite\&.    Accepts a Tcl integer number\&.
.TP
double
Infinite\&.    Accepts a Tcl double number\&.
.TP
percent
Infinite\&.    Accepts a Tcl double number in the range [0,100]\&.
.TP
rdirectory
Completable\&. Accepts a readable directory (path)\&.
.TP
rfile
Completable\&. Accepts a readable file (path)\&.
.TP
rpath
Completable\&. Accepts a readable path\&.
.TP
rwdirectory
Completable\&. Accepts a read/writable directory (path)\&.
.TP
rwfile
Completable\&. Accepts a read/writable file (path)\&.
.TP
rwpath
Completable\&. Accepts a read/writable path\&.
.PP
.SH "STANDARD SELECTION RULES"
.PP
Because of the aformentioned necessity all parameters must have
a validation type assigned to them, and the framework will choose
which, if the user did not\&. This choice is made per the six rules
below and always returns one of the builtins described here\&.
.IP [1]
Use \fBidentity\fR if a  \fBgenerate\fR callback is specified\&.
.IP [2]
Use \fBboolean\fR  if no \fBdefault\fR is specified and the parameter is an \fIoption\fR\&.
.IP [3]
Use \fBidentity\fR if no \fBdefault\fR is specified and the parameter is an \fIinput\fR\&.
.IP [4]
Use \fBboolean\fR  if the specified \fBdefault\fR value is a Tcl boolean\&.
.IP [5]
Use \fBinteger\fR  if the specified \fBdefault\fR value is a Tcl integer\&.
.IP [6]
Use \fBidentity\fR as fallback of last resort\&.
.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