NAME

       Encode::Arabic::Buckwalter - Tim Buckwalter's transliteration of Arabic

SYNOPSIS

           use Encode::Arabic::Buckwalter;         # imports just like 'use Encode' would, plus more

           while ($line = <>) {                    # Tim Buckwalter's mapping into the Arabic script

               print encode 'utf8', decode 'buckwalter', $line;    # 'Buckwalter' alias 'Tim'
           }

           # shell filter of data, e.g. in *n*x systems instead of viewing the Arabic script proper

           % perl -MEncode::Arabic::Buckwalter -pe '$_ = encode "buckwalter", decode "utf8", $_'

           # employing the modes of conversion for filtering and trimming

           Encode::Arabic::enmode 'buckwalter', 'nosukuun', '>&< xml';
           Encode::Arabic::Buckwalter->demode(undef, undef, 'strip _');

           $decode = "Aiqora>o h`*aA {l_n~a_S~a bi___{notibaAhK.";
           $encode = encode 'buckwalter', decode 'buckwalter', $decode;

           # $encode eq "AiqraO h`*aA Aln~aS~a biAntibaAhK."

DESCRIPTION

       Tim Buckwalter's notation is a one-to-one transliteration of the Arabic script for Modern Standard
       Arabic, using lower ASCII characters to encode the graphemes of the original script. This system has been
       very popular in Natural Language Processing, however, there are limits to its applicability due to
       numerous non-alphabetic codes involved.

   IMPLEMENTATION
       The module takes care of the Encode::Encoding programming interface, while the effective code is Tim
       Buckwalter's "tr"ick:

           $encode =~ tr[\x{060C}\x{061B}\x{061F}\x{0621}-\x{063A}\x{0640}-\x{0652}    # !! no break in true perl !!
                         \x{0670}\x{0671}\x{067E}\x{0686}\x{0698}\x{06A4}\x{06AF}\x{0660}-\x{0669}]
                        [,;?'|>&<}AbptvjHxd*rzs$SDTZEg_fqklmnhwYyFNKaui~o`{PJRVG0-9];

           $decode =~ tr[,;?'|>&<}AbptvjHxd*rzs$SDTZEg_fqklmnhwYyFNKaui~o`{PJRVG0-9]
                        [\x{060C}\x{061B}\x{061F}\x{0621}-\x{063A}\x{0640}-\x{0652}    # !! no break in true perl !!
                         \x{0670}\x{0671}\x{067E}\x{0686}\x{0698}\x{06A4}\x{06AF}\x{0660}-\x{0669}];

   EXPORTS & MODES
       If the first element in the list to "use" is ":xml", the alternative mapping is introduced that suits the
       XML etiquette. This option is there only to replace the ">&<" reserved characters by "OWI" while still
       having a one-to-one notation. There is no XML parsing involved, and the markup would get distorted if
       subject to "decode"!

           $using_xml = eval q { use Encode::Arabic::Buckwalter ':xml'; decode 'buckwalter', 'OWI' };
           $classical = eval q { use Encode::Arabic::Buckwalter;        decode 'buckwalter', '>&<' };

           # $classical eq $using_xml and $classical eq "\x{0623}\x{0624}\x{0625}"

       The module exports as if "use Encode" also appeared in the package. The other "import" options are just
       delegated to Encode and imports performed properly.

       The conversion modes of this module allow one to override the setting of the ":xml" option, in addition
       to filtering out diacritical marks and stripping off kashida. The modes and aliases relate like this:

           our %Encode::Arabic::Buckwalter::modemap = (

                   'default'       => 0,   'undef'         => 0,

                   'fullvocalize'  => 0,   'full'          => 0,

                   'nowasla'       => 4,

                   'vocalize'      => 3,   'nosukuun'      => 3,

                   'novocalize'    => 2,   'novowels'      => 2,   'none'          => 2,

                   'noshadda'      => 1,   'noneplus'      => 1,
               );

       enmode ($obj, $mode, $xml, $kshd)
       demode ($obj, $mode, $xml, $kshd)
           These methods can be invoked directly or through the respective functions of Encode::Arabic. The
           meaning of the extra parameters follows from the examples of usage.

SEE ALSO

       Encode::Arabic, Encode, Encode::Encoding

       Tim Buckwalter's Qamus  <http://www.qamus.org/>

       Buckwalter Arabic Morphological Analyzer
           <http://www.ldc.upenn.edu/Catalog/CatalogEntry.jsp?catalogId=LDC2002L49>

AUTHOR

       Otakar Smrz "<otakar-smrz users.sf.net>", <http://otakar-smrz.users.sf.net/>

COPYRIGHT AND LICENSE

       Copyright (C) 2003-2016 Otakar Smrz

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl
       itself.