Net::DNS::Text - DNS text representation
use Net::DNS::Text;
$object = new Net::DNS::Text('example');
$string = $object->string;
$object = decode Net::DNS::Text( \$data, $offset );
( $object, $next ) = decode Net::DNS::Text( \$data, $offset );
$data = $object->encode;
$text = $object->value;
The Net::DNS::Text module implements a class of text objects
with associated class and instance methods.
Each text object instance has a fixed identity throughout its
lifetime.
$object = new Net::DNS::Text('example');
Creates a text object which encapsulates a single character
string component of a resource record.
Arbitrary single-byte characters can be represented by \ followed
by exactly three decimal digits. Such characters are devoid of
any special meaning.
A character preceded by \ represents itself, without any special
interpretation.
$object = decode Net::DNS::Text( \$buffer, $offset );
( $object, $next ) = decode Net::DNS::Text( \$buffer, $offset );
Creates a text object which represents the decoded data at the
indicated offset within the data buffer.
The argument list consists of a reference to a scalar containing
the wire-format data and offset of the text data.
The returned offset value indicates the start of the next item in
the data buffer.
$data = $object->encode;
Returns the wire-format encoded representation of the text object
suitable for inclusion in a DNS packet buffer.
$data = $object->raw;
Returns the wire-format encoded representation of the text object
without the explicit length field.
$value = $text->value;
Character string representation of the text object.
$string = $text->string;
Conditionally quoted zone file representation of the text object.
Coding strategy is intended to avoid creating unnecessary argument
lists and stack frames. This improves efficiency at the expense of
code readability.
Platform specific character coding features are conditionally
compiled into the code.
Copyright (c)2009-2011 Dick Franks.
All rights reserved.
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted, provided
that the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation, and that the name of the author not be used in advertising
or publicity pertaining to distribution of the software without specific
prior written permission.
THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
perl, the Net::DNS manpage, RFC1035, RFC3629,
Unicode Technical Report #16
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