NAME

  UTF8::R2 - makes UTF-8 scripting easy for enterprise use or LTS

SYNOPSIS

  use UTF8::R2;
  use UTF8::R2 qw( RFC3629 );
  use UTF8::R2 qw( RFC2279 );

DESCRIPTION

  UTF8::R2 module provides minimal UTF-8 subroutines for stable scripting
  environment, using no utf8 pragma, no UTF-8 flag.

    # on use UTF8::R2;
    # or use UTF8::R2 qw( RFC3629 );
    # m/./ means
    qr{(?>
        [\x00-\x7F\xC0-\xC1\xF5-\xFF]                |
        [\xC2-\xDF][\x80-\xBF]                       |
        [\xE0-\xE0][\xA0-\xBF][\x80-\xBF]            |
        [\xE1-\xEC][\x80-\xBF][\x80-\xBF]            |
        [\xED-\xED][\x80-\x9F][\x80-\xBF]            |
        [\xEE-\xEF][\x80-\xBF][\x80-\xBF]            |
        [\xF0-\xF0][\x90-\xBF][\x80-\xBF][\x80-\xBF] |
        [\xF1-\xF3][\x80-\xBF][\x80-\xBF][\x80-\xBF] |
        [\xF4-\xF4][\x80-\x8F][\x80-\xBF][\x80-\xBF] |
        [\x00-\xFF]
    )}x;

    # on use UTF8::R2 qw( RFC2279 );
    # m/./ means
    qr{(?>
        [\x00-\x7F\xC0-\xC1\xF5-\xFF]                |
        [\xC2-\xDF][\x80-\xBF]                       |
        [\xE0-\xEF][\x80-\xBF][\x80-\xBF]            |
        [\xF0-\xF4][\x80-\xBF][\x80-\xBF][\x80-\xBF] |
        [\x00-\xFF]
    )}x;

SUBROUTINES

  VERY USEFUL UTF-8 CODEPOINT FEATURE
    UTF8::R2::qr(qr/ utf8_regex_here . \D \H \N \R \S \V \W \b \d \h \s \v \w \x{Unicode} [ \D \H \S \V \W \b \d \h \s \v \w \x{Unicode} ] ? + * {n} {n,} {n,m} /imsxogc)
    UTF8::R2::split(qr/$utf8regex/imsxo, $_, 3)
    UTF8::R2::tr($_, 'ABC', 'XYZ', 'cdsr')
    tie my %utf8r2, 'UTF8::R2';
      $_ =~ $utf8r2{qr/$utf8regex/imsxogc}
      $_ =~ s<$utf8r2{qr/before/imsxo}><after>egr

  OTHER UTF-8 CODEPOINT FEATURE
    UTF8::R2::chop(@_)
    UTF8::R2::chr($_)
    UTF8::R2::getc(FILE)
    UTF8::R2::index($_, 'ABC', 5)
    UTF8::R2::lc($_)
    UTF8::R2::lcfirst($_)
    UTF8::R2::length($_)
    UTF8::R2::ord($_)
    UTF8::R2::reverse(@_)
    UTF8::R2::rindex($_, 'ABC', 5)
    UTF8::R2::substr($_, 0, 5)
    UTF8::R2::uc($_)
    UTF8::R2::ucfirst($_)

SUPPORTED PERL VERSIONS

  perl version 5.005_03 to newest perl

SEE ALSO

  http://search.cpan.org/~ina/
  http://backpan.perl.org/authors/id/I/IN/INA/