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Unicode::RecursiveDowngrade - Turn off the UTF-8 flags inside of complex variable


 use Unicode::RecursiveDowngrade;
 $rd = Unicode::RecursiveDowngrade->new;
 $var = {
     foo   => 'bar',
     baz   => [
     corge => \$grault,
 $unflagged = $rd->downgrade($var);


Unicode::RecursiveDowngrade will turn off the UTF-8 flag inside of complex variable in a lump. In spite of your intention, some modules turn it on every elements of returned variable. You may be hard up for turn them off if you don't need any UTF-8 flags in your variable. This module will fix it up easily.

Sometime I think about the UTF-8 flag is not stead. But some XML::Parser based modules will turn it on. For example, XML::Simple is really simple way to parse XMLs, but this module returns a simple hashref including flagged values. This hashref is very hard to use, isn't it?


  • new

    new() is a constructor method.

  • filter

    You can set some filter to filter() accessor. The values of downgraded will be passed this filter function. You have to set a code reference to this accessor. Like this:

     use Unicode::RecursiveDowngrade;
     use Unicode::Japanese;
     $rd = Unicode::RecursiveDowngrade->new;
     $rd->filter(sub { Unicode::Japanese->new(shift, 'utf8')->euc });
     $unflagged = $rd->downgrade($var);

    the passed subref will be called inside downgrade() method.

  • downgrade

    downgrade() returns a turned off variable of argument.


  • $Unicode::RecursiveDowngrade::DowngradeFunc

    This variable has a downgrade function for downgrade() method. You can override the variable for some other way.


Koichi Taniguchi <>


Copyright (c) 2005 Koichi Taniguchi. Japan. All rights reserved.

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