'\"
'\" Generated from file 'valtype_common\&.man' by tcllib/doctools with format 'nroff'
'\" Copyright (c) 2011 Andreas Kupries <andreas_kupries@users\&.sourceforge\&.net>
'\"
.TH "valtype::common" n 1\&.1 tcllib "Validation types"
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.BS
.SH NAME
valtype::common \- Validation, common code
.SH SYNOPSIS
package require \fBTcl 8\&.5 9\fR
.sp
package require \fBvaltype::common ?1\&.1?\fR
.sp
\fBvaltype::common::reject\fR \fIcode\fR \fItext\fR
.sp
\fBvaltype::common::badchar\fR \fIcode\fR ?\fItext\fR?
.sp
\fBvaltype::common::badcheck\fR \fIcode\fR ?\fItext\fR?
.sp
\fBvaltype::common::badlength\fR \fIcode\fR \fIlengths\fR ?\fItext\fR?
.sp
\fBvaltype::common::badprefix\fR \fIcode\fR \fIprefixes\fR ?\fItext\fR?
.sp
.BE
.SH DESCRIPTION
This package implements a number of common commands used by the
validation types in this module\&. These commands essentially
encapsulate the throwing of validation errors, ensuring that a proper
\fB-errorcode\fR is used\&. See section \fBError Codes\fR\&.
.SH API
.TP
\fBvaltype::common::reject\fR \fIcode\fR \fItext\fR
The core command of this package it throws an \fBINVALID\fR error
with the specified \fItext\fR\&. The first argument is a list of codes
extending the \fBINVALID\fR with detail information\&.
.TP
\fBvaltype::common::badchar\fR \fIcode\fR ?\fItext\fR?
This command throws an \fBINVALID CHAR\fR error with the specified
\fItext\fR\&. The first argument is a list of codes providing
details\&. These are inserted between the codes \fBINVALID\fR and
\fBCHARACTER\fR\&.
.TP
\fBvaltype::common::badcheck\fR \fIcode\fR ?\fItext\fR?
This command throws an \fBINVALID CHECK-DIGIT\fR error with the
specified \fItext\fR, if any, extended by the standard text "the check
digit is incorrect"\&. The first argument is a list of codes providing
details\&. These are inserted between the codes \fBINVALID\fR and
\fBCHECK_DIGIT\fR\&.
.TP
\fBvaltype::common::badlength\fR \fIcode\fR \fIlengths\fR ?\fItext\fR?
This command throws an \fBINVALID LENGTH\fR error with the
specified \fItext\fR, if any, extended by the standard text "incorrect
length, expected \&.\&.\&. character(s)"\&. The first argument is a list of
codes providing details\&.
These are inserted between the codes \fBINVALID\fR and
\fBLENGTH\fR\&. The argument \fIlengths\fR is a list of the input
lengths which had been expected, i\&.e\&. these are the valid lengths\&.
.TP
\fBvaltype::common::badprefix\fR \fIcode\fR \fIprefixes\fR ?\fItext\fR?
This command throws an \fBINVALID PREFIX\fR error with the
specified \fItext\fR, if any, extended by the standard text "incorrect
prefix, expected \&.\&.\&."\&. The first argument is a list of codes providing
details\&.
These are inserted between the codes \fBINVALID\fR and
\fBPREFIX\fR\&. The argument \fIprefixes\fR is a list of the input
prefixes which had been expected, i\&.e\&. these are the valid prefixes\&.
.PP
.SH "ERROR CODES"
The errors thrown by the commands of this package all use the
\fB-errorcode\fR \fBINVALID\fR to distinguish the input validation
failures they represent from package internal errors\&.
.PP
To provide more detailed information about why the validation
failed the \fB-errorCode\fR goes actually beyond that\&.
First, it will contain a code detailing the type itself\&. This is
supplied by the caller\&. This is then followed by values detailing the
reason for the failure\&. The full set of \fB-errorCode\fRs which can be
thrown by this package are shown below, with \fB<>\fR a placeholder
for both the caller-supplied type-information, the type description\&.
.TP
INVALID \fB<>\fR CHARACTER
The input value contained one or more bad characters, i\&.e\&. characters
which must not occur in the input for it to be a \fB<>\fR\&.
.TP
INVALID \fB<>\fR CHECK-DIGIT
The check digit of the input value is wrong\&. This usually signals a
data-entry error, with digits transposed, forgotten, etc\&. Of course,
th input may be an outright fake too\&.
.TP
INVALID \fB<>\fR LENGTH
The input value is of the wrong length to be a \fB<>\fR\&.
.TP
INVALID \fB<>\fR PREFIX
The input value does not start with the magic value(s) required for it
to be a \fB<>\fR\&.
.PP
.SH "BUGS, IDEAS, FEEDBACK"
This document, and the package it describes, will undoubtedly contain
bugs and other problems\&.
Please report such in the category \fIvaltype\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
Checking, Testing, Type checking, Validation, Value checking, isA
.SH CATEGORY
Validation, Type checking
.SH COPYRIGHT
.nf
Copyright (c) 2011 Andreas Kupries <andreas_kupries@users\&.sourceforge\&.net>

.fi
