NAME

ShiftJIS::CP932::MapUTF - Converts between CP-932 (Shift_JIS supported by MS) and unicode

SYNOPSIS

use ShiftJIS::CP932::MapUTF;

$utf8_string  = cp932_to_utf8($cp932_string);

DESCRIPTION

The Microsoft CodePage 932 (CP-932) table comprises 7915 characters:

JIS X 0201-1976 single-byte characters (191 characters),
JIS X 0208-1990 double-byte characters (6879 characters),
NEC special characters (83 characters from SJIS row 13),
NEC-selected IBM extended characters (374 characters from SJIS row 89 to 92),
and IBM extended characters (388 characters from SJIS row 115 to 119).

It contains duplicates that do not round trip map. These duplicates are due to the characters defined by vendors, NEC and IBM.

For example, there are two characters that are mapped to U+2252, namely, 0x81e0 (JIS X 0208) and 0x8790 (NEC special character).

This module provides some functions to maps from CP-932 to Unicode, and vice versa.

cp932_to_utf8(STRING)

cp932_to_utf8(CODEREF, STRING)

Converts CP-932 to UTF-8.

For example, converts \x81\xe0 or \x87\x90 to U+2252 in the UTF-8 encoding.

If CODEREF is not specified, characters that aren't mapped to Unicode are deleted. If CODEREF is specified, characters that aren't mapped to Unicode are converted using CODEREF from the CP-932 character string.

For example, converts \x82\xf2 to U+3094, HIRAGANA LETTER VU, in the UTF-8 encoding.

cp932_to_utf8(
  sub { $_[0] eq "\x82\xf2" ? "\xe3\x82\x94" : "" },
  $cp932_string);

cp932_to_utf16(STRING)

cp932_to_utf16(CODEREF, STRING)

Converts CP-932 to UTF-16LE.

For example, converts \x81\xe0 or \x87\x90 to U+2252 in the UTF-16LE encoding.

If CODEREF is not specified, characters that aren't mapped to Unicode are deleted. If CODEREF is specified, characters that aren't mapped to Unicode are converted using CODEREF from the CP-932 character string.

For example, converts \x82\xf2 to U+3094, HIRAGANA LETTER VU, in the UTF-16LE encoding.

cp932_to_utf16(
  sub { $_[0] eq "\x82\xf2" ? "\x94\x30" : "" },
  $cp932_string);

utf8_to_cp932(STRING)

utf8_to_cp932(CODEREF, STRING)

Converts UTF-8 to CP-932 (normalized).

For example, U+2252 in the UTF-8 encoding is converted to \x81\xe0, not to \x87\x90.

If CODEREF is not specified, characters that aren't mapped to CP-932 are deleted. If CODEREF is specified, characters that aren't mapped to CP-932 are converted using CODEREF from its Unicode code point (integer).

For example, characters that aren't mapped to CP-932 are converted to numerical character reference for HTML 4.01.

utf8_to_cp932(sub {sprintf "&#%04x;", shift}, $utf8_string);

utf16_to_cp932(STRING)

utf16_to_cp932(CODEREF, STRING)

Converts UTF-16LE to CP-932 (normalized).

For example, U+2252 in the UTF-16LE encoding is converted to \x81\xe0, not to \x87\x90.

If CODEREF is not specified, characters that aren't mapped to CP-932 are deleted. If CODEREF is specified, characters that aren't mapped to CP-932 are converted using CODEREF from its Unicode code point (integer).

For example, characters that aren't mapped to CP-932 are converted to numerical character reference for HTML 4.01.

utf16_to_cp932(sub {sprintf "&#%04x;", shift}, $utf16LE_string);

AUTHOR

Tomoyuki SADAHIRO

bqw10602@nifty.com
http://homepage1.nifty.com/nomenclator/perl/

Copyright(C) 2001, SADAHIRO Tomoyuki. Japan. All rights reserved.

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

SEE ALSO

1. Microsoft PRB: Conversion Problem Between Shift-JIS and Unicode (Article ID: Q170559)

2. Unicode.org

   ftp://ftp.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WINDOWS/CP932.TXT