NAME

Lingua::JA::Numbers - Converts numeric values into their Japanese string equivalents and vice versa

VERSION

$Revision: 0.5 $ $Date: 2015/03/10 11:04:45 $

SYNOPSIS

  use Lingua::JA::Numbers;

  # OO Style
  my $ja = Lingua::JA::Numbers->new(1234567890, {style=>'romaji'});
  # JuuNiOkuSanzenYonHyakuGoJuuRokuManNanaSenHappyakuKyuuJuu
  # $ja->get_string is implictly called
  print "$ja\n"; 
  print $ja+0, "\n";
  # 1234567890
  # $ja->number is implicitly called.
  # 1234567890

  # Functional Style
  my $str = ja2num(1234567890, {style=>'romaji'});
  print "$str\n";
  # JuuNiOkuSanzenYonHyakuGoJuuRokuManNanaSenHappyakuKyuuJuu
  print num2ja($str), "\n";
  # 1234567890

INSTALLATION

To install this module type the following:

   perl Makefile.PL
   make
   make test
   make install

DEPENDENCIES

This module requires perl 5.8.1 or better. It also uses bignum internally (that comes with perl core).

DESCRIPTION

This module converts Japanese text in UTF-8 (or romaji in ascii) to number, AND vice versa. Though this pod is in English and all examples are in romaji to make <http://search.cpan.org/> happy, this module does accept Japanese in UTF-8. Try the code below to see it.

  perl -MLingua::JA::Numbers \
    -e '$y="\x{4e8c}\x{5343}\x{4e94}"; printf "(C) %d Dan Kogai\n", ja2num($y)'

CAVEAT

DO NOT BE CONFUSED WITH Lingua::JA::Number by Mike Schilli. This module is far more comprehensive. As of 0.03, it even does its to_string() upon request.

METHODS

This module supports the following methods. They are compliant with Lingua::En::Numbers and others.

->new($str [, {key=>var ...} ]): Constructs an object via $str. String can either be number or a string in Japanese that represents a number. Optionally take options. See "Functions" for options.
->parse($str, [, {key=>var ...} ]): Parses $str.
->opt(key => var): Changes internal options.
->get_string =item ->stringify =item ->as_string: Stringifies the object accordingly to the options. The object auto-stringifies via overload so you don't usally need this.
->as_number =item ->numify: Numifies the object. The object auto-numifies via overload so you don't usally need this UNLESS YOU USE THIS MODULE with bignum. See "bignum vs. Lingua::JA::Numbers" below.

Functions

This module supports the funcitons below;

num2ja($num, [{key => value ... }]); =item number_to_ja()

Converts the number to Japanese accordingly to the options. "number_to_ja()" is just an alias to "num2ja()".

  # \x{767e}\x{4e8c}\x{5341}\x{4e09}
  num2ja(123)
  # HyakuNijuuSan
  num2ja(123, {style=>"romaji"})

This function supports the options as follows;

style => (kanji|romaji|hiragana|katakana)

Sets which style (well, script but the word "script" is confusing). You can choose "kanji" (default), romaji, hiragana and katakana.

daiji => (0|1|2)

When 1, daiji is used. When 2 or larger, even those that are not represented as daiji will be in daiji. See <http://ja.wikipedia.org/wiki/%E5%A4%A7%E5%AD%97_%28%E6%95%B0%E5%AD%97%29> for details.

When this option is set to non-zero, "style" is ignored (kanji).

p_one

Forciblly prefix one even when not needed.

  print num2ja(1110, {style=>"romaji"}), "\n";
  # SenHyakuJuu
  print num2ja(1110, {style=>"romaji", p_one=>1}), "\n";
  # IchiSenIchiHyakuIchiJuu

fixed4

Just stack numbers for thousands.

  print num2ja(2005, {style=>"romaji"}), "\n";
  NiSenGo
  print num2ja(2005, {style=>"romaji", fixed4=>1}), "\n";
  NiZeroZeroGo

with_arabic

Like "fixed4" but stack these numbers with arabic.

  print num2ja(20050831, {style=>"romaji"}), "\n";
  # NiSenGoManHappyakuSanJuuIchi
  print num2ja(20050831, {style=>"romaji" with_arabic=>1}), "\n";
  # 2005Man0831

manman

Depreciated. When set to non-zero, it 8-digit (4x2) denomination for 'Goku' (10**48) and above.

  print num2ja(10**60, {style=>"romaji"}), "\n";
  # IchiAsougi
  print num2ja(10**60, {style=>"romaji" manman=>1}), "\n";
  # IchiManKougasha

ja2num($str, [{key => value ... }]); =item ja_to_number()

Converts Japanese number to number. Unlike "num2ja()", its counterpart, it supports only one option, "manman =" (0|1)> which toggles 8-digit denomination.

It is pretty liberal on what it takes. For instance they all return 20050831.

  ja2num("NisenGoManHappyakuSanjuIchi")
  ja2num("NiZeroZeroGoZeroHachiSanIchi")
  ja2num("2005Man0831")

ja2num() hacks

ja2num() acts like a calculator -- the easiest way to support scientific notation was just that. Try

  ja2num("6.0225Kakeru10No23Jou")

to_string() of Lingua::JA::Number

Though not exported by default, This module comes with to_string() that is (upper-)compatibile with Lingua::JA::Number.

 my @words = Lingua::JA::Numbers::to_string(1234);
 print join('-', @words), "\n";   
 # "sen-ni-hyaku-san-ju-yon"

EXPORT

ja2num(), num2ja(), num2ja_ordinal(), ja_to_number(), number_to_ja(), number_to_ja_ordinal()

BUGS

bignum vs. Lingua::JA::Numbers

Because of overload, The OO approach does not go well with bignum, despite the fact this module uses it internally.

  use bignum;
  $j = Lingua::JA::Numbers->new("SanTenIchiYon");
  $b = 1 + $ja          # bang! does not work;
  $b = 1 + $ja->numify; # OK

Jo, or 10**24

The chacracter Jo (U+25771) which represents ten to twenty-four does not have a code point in BMP so it is represented in two letters that look like one (U+79be U+x4e88)

AUTHOR

Dan Kogai, <dankogai@dan.co.jp>

COPYRIGHT AND LICENSE

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.7 or, at your option, any later version of Perl 5 you may have available.