NAME

  Latin4 - Native Encoding Support by Traditional Scripting

SYNOPSIS

  # encoding: Latin4
  use Latin4;
  print "Hello, world wide market!\n";

  # "no Latin4;" not supported

DESCRIPTION

  The Latin4 software provides character-oriented Perl environment on the
  native encoding, by traditional scripting that we know.

  - Character oriented regular expression and runtime routines
  - Character oriented Latin4::* subroutines
      and
  - Byte oriented CORE::* built-in functions
  - Byte oriented regular expression on /b modifier

  Information processing model beginning with Perl3 or this software.

    +--------------------------------------------+
    |    Text string as Digital octet string     |
    |    Digital octet string as Text string     |
    +--------------------------------------------+
    |       Not UTF8 Flagged, No Mojibake        |
    +--------------------------------------------+

  In UNIX Everything is a File
  - In UNIX everything is a stream of bytes
  - In UNIX the filesystem is used as a universal name space

  Native Encoding Scripting
  - native encoding of file contents
  - native encoding of file name on filesystem
  - native encoding of command line
  - native encoding of environment variable
  - native encoding of API
  - native encoding of network packet
  - native encoding of database

SUBROUTINES

  Old Days -- memories are always beautiful.

    Functions of
    Byte and SBCS -- Traditional Perl Script
    -------------
    eval
    length
    substr
    ord
    reverse
    getc
    index
    rindex
    pos
    m//
    s///
    split //
    tr///
    qr//
    -------------

  Today -- some memories are beautiful, others are not.
           (I don't say what are not;)

    Byte Oriented        Character Oriented
    Functions       vs   Subroutines
    -------------        ----------------
    eval            vs   Latin4::eval
    length          vs   Latin4::length
    substr          vs   Latin4::substr
    ord             vs   Latin4::ord
    reverse         vs   Latin4::reverse
    getc            vs   Latin4::getc
    index           vs   Latin4::index
    rindex          vs   Latin4::rindex
    pos             vs   (nothing)
    m//b            vs   m//
    s///b           vs   s///
    split //b       vs   split //
    tr///b          vs   tr///
    qr//b           vs   qr//
    -------------        ----------------

                                            ****************                     
                                            * Casual       *          Traditional
                                            * Scripting    *  nearly  Perl Script
                                            ****************          -----------
                                            * Latin4::eval   *  is not  eval       
                                            * length       *    is    length     
                                            * substr       *    is    substr     
                                            * ord          *    is    ord        
                                            * reverse      *    is    reverse    
                                            * getc         *    is    getc       
                                            * index        *    is    index      
                                            * rindex       *    is    rindex     
                                            * pos          *    is    pos        
                                            * m//          *    is    m//        
                                            * s///         *    is    s///       
                                            * split //     *    is    split //   
                                            * tr///        *    is    tr///      
                                            * qr//         *    is    qr//       
                                            ****************          -----------

  - Data typing by switching operators, like traditional Perl style
  - Text data by Character Oriented Subroutines
  - Binary data by Byte Oriented Functions
  - /b modifier was introduced via JPerl
  - Multibyte Character Support by Traditional Scripting, in almost all cases

ENCODING FAMILY

  Arabic, Big5HKSCS, Big5Plus, Cyrillic, EUCJP, EUCTW, GB18030, GBK, Greek,
  HP15, Hebrew, INFORMIXV6ALS, JIS8, KOI8R, KOI8U, KPS9566, Latin1, Latin10,
  Latin2, Latin3, Latin4, Latin5, Latin6, Latin7, Latin8, Latin9, OldUTF8,
  Sjis, TIS620, UHC, USASCII, UTF2, Windows1252, and Windows1258

SUPPORTED OPERATING SYSTEMS

  Apple Mac OS X, HP HP-UX, IBM AIX, Microsoft Windows, Oracle Solaris,
  and Other Systems

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/