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Net::DNS::ZoneFile(3pmUser Contributed Perl DocumentatiNet::DNS::ZoneFile(3pm)

NAME
       Net::DNS::ZoneFile - DNS zone file

SYNOPSIS
	   use Net::DNS::ZoneFile;

	   $zonefile = new Net::DNS::ZoneFile( 'named.example' );

	   while ( $rr = $zonefile->read ) {
	       $rr->print;
	   }

	   @zone = $zonefile->read;

DESCRIPTION
       Each Net::DNS::ZoneFile object instance represents a zone file together
       with any subordinate files introduced by the $INCLUDE directive.	 Zone
       file syntax is defined by RFC1035.

       A program may have multiple zone file objects, each maintaining its own
       independent parser state information.

       The parser supports both the $TTL directive defined by RFC2308 and the
       BIND $GENERATE syntax extension.

       All RRs in a zone file must have the same class, which may be specified
       for the first RR encountered and is then propagated automatically to
       all subsequent records.

METHODS
   new
	   $zonefile = new Net::DNS::ZoneFile( 'filename', ['example.com'] );

	   $handle   = new IO::File( 'filename', '<:encoding(ISO8859-7)' );
	   $zonefile = new Net::DNS::ZoneFile( $handle, ['example.com'] );

       The new() constructor returns a Net::DNS::ZoneFile object which
       represents the zone file specified in the argument list.

       The specified file or file handle is open for reading and closed when
       exhausted or all references to the ZoneFile object cease to exist.

       The optional second argument specifies $ORIGIN for the zone file.

       Character encoding is specified indirectly by creating a file handle
       with the desired encoding layer, which is then passed as an argument to
       new(). The specified encoding is propagated to files introduced by
       $include directives.

   read
	   $rr = $zonefile->read;
	   @rr = $zonefile->read;

       When invoked in scalar context, read() returns a Net::DNS::RR object
       representing the next resource record encountered in the zone file, or
       undefined if end of data has been reached.

       When invoked in list context, read() returns the list of Net::DNS::RR
       objects in the order that they appear in the zone file.

       Comments and blank lines are silently disregarded.

       $INCLUDE, $ORIGIN, $TTL and $GENERATE directives are processed
       transparently.

   name
	   $filename = $zonefile->name;

       Returns the name of the current zone file.  Embedded $INCLUDE
       directives will cause this to differ from the filename argument
       supplied when the object was created.

   line
	   $line = $zonefile->line;

       Returns the number of the last line read from the current zone file.

   origin
	   $origin = $zonefile->origin;

       Returns the fully qualified name of the current origin within the zone
       file.

   ttl
	   $ttl = $zonefile->ttl;

       Returns the default TTL as specified by the $TTL directive.

COMPATIBILITY WITH Net::DNS::ZoneFile 1.04
       Applications which depended on the defunct Net::DNS::ZoneFile 1.04 CPAN
       distribution will continue to operate with minimal change using the
       compatibility interface described below.

	   use Net::DNS::ZoneFile;

	   $listref = Net::DNS::ZoneFile->read( $filename );
	   $listref = Net::DNS::ZoneFile->read( $filename, $include_dir );

	   $listref = Net::DNS::ZoneFile->readfh( $handle, $include_dir );

	   $listref = Net::DNS::ZoneFile->parse(  $string );
	   $listref = Net::DNS::ZoneFile->parse(  $string, $include_dir );
	   $listref = Net::DNS::ZoneFile->parse( \$string, $include_dir );

	   $_->print for @$listref;

       The optional second argument specifies the default path for filenames.
       The current working directory is used by default.

       Although not available in the original implementation, the RR list can
       be obtained directly by calling any of these methods in list context.

	   @rr = Net::DNS::ZoneFile->read( $filename, $include_dir );

   read
	   $listref = Net::DNS::ZoneFile->read( $filename, $include_dir );
	   @rr = Net::DNS::ZoneFile->read( $filename, $include_dir );

       read() parses the specified zone file and returns a reference to the
       list of Net::DNS::RR objects representing the RRs in the file.  The
       return value is undefined if the zone data can not be parsed.

       When called in list context, the partial result is returned if an error
       is encountered by the parser.

   readfh
	   $listref = Net::DNS::ZoneFile->readfh( $handle, $include_dir );

       readfh() parses data from the specified file handle and returns a
       reference to the list of Net::DNS::RR objects representing the RRs in
       the file.

   parse
	   $listref = Net::DNS::ZoneFile->parse(  $string, $include_dir );
	   $listref = Net::DNS::ZoneFile->parse( \$string, $include_dir );

       parse() interprets the zone file text in the argument string and
       returns a reference to the list of Net::DNS::RR objects representing
       the RRs.

ACKNOWLEDGEMENTS
       This package is designed as an improved and compatible replacement for
       Net::DNS::ZoneFile 1.04 which was created by Luis Munoz in 2002 as a
       separate CPAN module.

       The present implementation is the result of an agreement to merge our
       two different approaches into one package integrated into Net::DNS.
       The contribution of Luis Munoz is gratefully acknowledged.

       Thanks are also due to Willem Toorop for his constructive criticism of
       the initial version and invaluable assistance during testing.

COPYRIGHT
       Copyright (c)2011-2012 Dick Franks.

       All rights reserved.

LICENSE
       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.

SEE ALSO
       perl, Net::DNS, Net::DNS::RR, RFC1035 Section 5.1, RFC2308, BIND 9
       Administrator Reference Manual

perl v5.26.0			  2017-07-31	       Net::DNS::ZoneFile(3pm)
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