NAME

Locale::Currency::Format - Perl functions for formatting monetary values

SYNOPSIS

 use Locale::Currency::Format;

 $amt = currency_format('USD', 1000);             # => 1,000.00 USD
 $amt = currency_format('EUR', 1000, FMT_COMMON); # => EUR1.000,00
 $amt = currency_format('USD', 1000, FMT_SYMBOL); # => $1,000.00

 $sym = currency_symbol('USD');                   # => $
 $sym = currency_symbol('GBP', SYM_HTML);         # => £

 currency_set('USD', '#.###,## $', FMT_COMMON);   # => set custom format
 currency_format('USD', 1000, FMT_COMMON);        # => 1.000,00 $
 currency_set('USD');                             # => reset default format

The following example illustrates how to use Locale::Currency::Format with Mason. Skip it if you are not interested in Mason. A simple Mason component might look like this:

Total: <% 123456789, 'eur' |c %> 

<%init>
  use Locale::Currency::Format;

  $m->interp->set_escape(c => \&escape_currency);

  sub escape_currency {
    my ($amt, $code) = ${$_[0]} =~ /(.*?)([A-Za-z]{3})/;
    ${$_[0]} = currency_format($code, $amt, FMT_HTML);
  }
</%init>

DESCRIPTION

Locale::Currency::Format is a light-weight Perl module that enables Perl code to display monetary values in the formats recognized internationally and/or locally.

currency_format(CODE, AMOUNT [, FORMAT])

currency_format takes two mandatory parameters, namely currency code and amount respectively, and optionally a third parameter indicating which format is desired. Upon failure, it returns undef and an error message is stored in $Locale::Currency::Format::error.

  CODE   - A 3-letter currency code as specified in ISO 4217.
           Note that old code such as GBP, FRF and so on can also
           be valid.

  AMOUNT - A numeric value.

  FORMAT - There are five different format options FMT_STANDARD,
           FMT_COMMON, FMT_SYMBOL, FMT_HTML and FMT_NAME. If it is
           omitted, the default format is FMT_STANDARD.

           FMT_STANDARD Ex: 1,000.00 USD, 1.000.000,00 EUR
           FMT_SYMBOL   Ex: $1,000.00
           FMT_COMMON   Ex: 1.000 Dong (Vietnam), BEF 1.000 (Belgium)
           FMT_HTML     Ex: £1,000.00  (pound-sign HTML escape)
           FMT_NAME     Ex: 1,000.00 US Dollar

           NOTE: By default the trailing zeros after the decimal
	   point will be added. To turn it off, do a bitwise C<or>
           of FMT_NOZEROS with one of the five options above.
           Ex: FMT_STANDARD | FMT_NOZEROS  will give 1,000 USD
           

currency_symbol(CODE [, TYPE])

For conveniences, the function currency_symbol is provided for currency symbol lookup given a 3-letter currency code. Optionally, one can specify which format the symbol should be returned - Unicode-based character or HTML escape. Default is a Unicode-based character. Upon failure, it returns undef and an error message is stored in $Locale::Currency::Format::error.

  CODE   - A 3-letter currency code as specified in ISO 4217
  TYPE   - There are two available types SYM_UTF and SYM_HTML

	   SYM_UTF  returns the symbol (if exists) as an Unicode
		    character
           SYM_HTML returns the symbol (if exists) as a HTML escape

currency_set(CODE [, TEMPLATE, FORMAT])

currency_set can be used to set a custom format for a currency instead of the provided format. For example, in many non-English speaking countries, the US dollars might be displayed as 2.999,99 $ instead of the usual $2,999.99. In order to accomplish this, one will need to do as follows:

  if (currency_set('USD', '#.###,## $', FMT_COMMON)) {
      $amt = currency_format('USD', 2999.99, FMT_COMMON);
      . . .
  }

CODE     - A 3-letter currency code as specified in ISO 4217
TEMPLATE - A template in the form #.###,##$, #.### kr, etc.
           If a unicode character is used, make sure that
           the template is double-quoted

           currency_set('GBP', "\x{00A3}#,###.##", FMT_SYMBOL)

           If an HTML escaped symbol is used, indicate so

           currency_set('GBP', '&#00A3;#,###.##', FMT_HTML)

FORMAT   - When TEMPLATE is present, FORMAT is required.
           FMT_SYMBOL, FMT_COMMON, FMT_HTML are understood.
           Note that FMT_STANDARD and FMT_NAME will always be in
           the form <amount><space><code|name> such as
           1,925.95 AUD. Hence, currency_set returns an error
           if FORMAT is FMT_STANDARD or FMT_NAME.
           With FMT_COMMON, you can always attain what you could
           do with FMT_STANDARD and FMT_NAME, as follows

           currency_set('USD', 'USD #.###,##', FMT_COMMON)
           currency_set('USD', 'US Dollar #.###,##', FMT_COMMON)

Invoking currency_set with one argument will reset all formats to their original settings. For example, currency_set('USD') will clear all previous custom settings for the US currency (ie. FMT_SYMBOL, FMT_HTML, FMT_COMMON).

A WORD OF CAUTION

Please be aware that some currencies might have missing common format. In that case, currency_format will fall back to FMT_STANDARD format.

Also, be aware that some currencies do not have monetary symbol.

As countries merge together or split into smaller ones, currencies can be added or removed by the ISO. Please help keep the list up to date by sending your feedback to the email address at the bottom.

To see the error, examine $Locale::Currency::Format::error

use Locale::Currency::Format;
my $value = currency_format('USD', 1000);
print $value ? $value : $Locale::Currency::Format::error
OR
use Locale::Currency::Format qw(:DEFAULT $error);
my $value = currency_format('USD', 1000);
print $value ? $value : $error 

Lastly, please refer to perluniintro and perlunicode for displaying Unicode characters if you intend to use FMT_SYMBOL and currency_symbol. Otherwise, it reads "No worries, mate!"

SEE ALSO

Locale::Currency, Math::Currency, Number::Format, perluniintro, perlunicode

BUGS

If you find any inaccurate or missing information, please send your comments to tnguyen@cpan.org. Your effort is certainly appreciated!

AUTHOR

Tan D Nguyen <tnguyen@cpan.org>

COPYRIGHT

This library is free software. You may distribute under the terms of either the GNU General Public License or the Artistic License.