SADAHIRO Tomoyuki > ShiftJIS-X0213-MapUTF > ShiftJIS::X0213::MapUTF

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NAME ^

ShiftJIS::X0213::MapUTF - conversion between Shift_JIS-2004/Shift_JISX0213 and Unicode

SYNOPSIS ^

    use ShiftJIS::X0213::MapUTF;

    # for Shift_JIS-2004
    $utf16be_string  = sjis2004_to_utf16be($sjis2004_string);
    $sjis2004_string = utf16be_to_sjis2004($utf16be_string);

    # for Shift_JISX0213
    $utf16be_string  = sjis0213_to_utf16be($sjis0213_string);
    $sjis0213_string = utf16be_to_sjis0213($utf16be_string);

DESCRIPTION ^

This module provides functions to convert from Shift_JIS-2004 (specified by JIS X 0213:2004) to Unicode, and vice versa.

For backward compatibility, this module also provides functions to convert from Shift_JISX0213 (specified by JIS X 0213:2000) to Unicode, and vice versa.

For convenience, "SJIS-X" is used to refer to both Shift_JIS-2004 and Shift_JISX0213 hereafter.

The following 10 JIS Kanji characters are added in JIS X 0213:2004. These mappings are used only for Shift_JIS-2004, and not for Shift_JISX0213.

   sjis2004     unicode 3.2.0

    0x879F        U+4FF1
    0x889E        U+525D
    0x9873        U+20B9F
    0x989E        U+541E
    0xEAA5        U+5653
    0xEFF8        U+59F8
    0xEFF9        U+5C5B
    0xEFFA        U+5E77
    0xEFFB        U+7626
    0xEFFC        U+7E6B

Conversion from SJIS-X to Unicode

If the first parameter is a reference, that is used for coping with SJIS-X characters unmapped to Unicode, SJIS_CALLBACK. (any reference will not allowed as STRING.)

If SJIS_CALLBACK is given, STRING is the second parameter; otherwise the first.

If SJIS_CALLBACK is not specified, SJIS-X characters unmapped to Unicode are silently deleted and illegal bytes are skipped by one byte. (as if a coderef constantly returning null string, sub {''}, is passed as SJIS_CALLBACK.)

Currently, only coderefs are allowed as SJIS_CALLBACK. A string returned from SJIS_CALLBACK is inserted in place of the unmapped character or the illegal byte.

A coderef as SJIS_CALLBACK is called with one or more arguments.

If illegal byte appears (i.e. a leading byte [0x81..0x9F, 0xE0..0xFC] without trailing byte ([0x40..0x7E, 0x80..0xFC]), or a reserved byte ([0x80, 0xA0, 0xF0..0xFF]), the first argument is undef and the second argument is an unsigned integer representing the byte.

If an unmapped character appears, the first argument is a defined string representing a character.

Example

    my $sjis_callback = sub {
        my ($char, $byte) = @_;
        return function($char) if defined $char;
        die sprintf "illegal byte 0x%02x", $byte;
    };

In the example above, $char may be "\xfc\xfc", etc.

The return value of SJIS_CALLBACK must be legal in the target format. E.g. never use with sjis2004_to_utf16be() a callback that returns UTF-8. I.e. you should prepare SJIS_CALLBACK for each UTF.

sjis2004_to_utf8([SJIS_CALLBACK,] STRING)

Converts Shift_JIS-2004 to UTF-8

sjis2004_to_unicode([SJIS_CALLBACK,] STRING)

Converts Shift_JIS-2004 to Unicode (Perl's internal format, flagged with SVf_UTF8, see perlunicode)

sjis2004_to_utf16le([SJIS_CALLBACK,] STRING)

Converts Shift_JIS-2004 to UTF-16LE.

sjis2004_to_utf16be([SJIS_CALLBACK,] STRING)

Converts Shift_JIS-2004 to UTF-16BE.

sjis2004_to_utf32le([SJIS_CALLBACK,] STRING)

Converts Shift_JIS-2004 to UTF-32LE.

sjis2004_to_utf32be([SJIS_CALLBACK,] STRING)

Converts Shift_JIS-2004 to UTF-32BE.

sjis0213_to_utf8([SJIS_CALLBACK,] STRING)

Converts Shift_JISX0213 to UTF-8

sjis0213_to_unicode([SJIS_CALLBACK,] STRING)

Converts Shift_JISX0213 to Unicode (Perl's internal format, flagged with SVf_UTF8, see perlunicode)

sjis0213_to_utf16le([SJIS_CALLBACK,] STRING)

Converts Shift_JISX0213 to UTF-16LE.

sjis0213_to_utf16be([SJIS_CALLBACK,] STRING)

Converts Shift_JISX0213 to UTF-16BE.

sjis0213_to_utf32le([SJIS_CALLBACK,] STRING)

Converts Shift_JISX0213 to UTF-32LE.

sjis0213_to_utf32be([SJIS_CALLBACK,] STRING)

Converts Shift_JISX0213 to UTF-32BE.

Conversion from Unicode to SJIS-X

If the first parameter is a reference, that is used for coping with Unicode characters unmapped to SJIS-X, UNICODE_CALLBACK. (any reference will not allowed as STRING.)

If UNICODE_CALLBACK is given, STRING is the second parameter; otherwise the first.

If UNICODE_CALLBACK is not specified, SJIS-X characters unmapped to Unicode are silently deleted and partial bytes are skipped by one byte. (as if a coderef constantly returning null string, sub {''} is passed as UNICODE_CALLBACK.)

Currently, only coderefs are allowed as UNICODE_CALLBACK. A string returned from the coderef is inserted in place of the unmapped character.

A coderef as UNICODE_CALLBACK is called with one or more arguments. If the unmapped character is a partial character (an illegal byte), the first argument is undef and the second argument is an unsigned integer representing the byte. If not partial, the first argument is an unsigned interger representing a Unicode code point.

For example, characters unmapped to SJIS-X are converted to numerical character references for HTML 4.01.

    sub toHexNCR {
        my ($char, $byte) = @_;
        return sprintf("&#x%x;", $char) if defined $char;
        die sprintf "illegal byte 0x%02x", $byte;
    }

    $sjis2004 = utf8_to_sjis2004   (\&toHexNCR, $utf8_string);
    $sjis2004 = unicode_to_sjis2004(\&toHexNCR, $unicode_string);
    $sjis2004 = utf16le_to_sjis2004(\&toHexNCR, $utf16le_string);

The return value of UNICODE_CALLBACK must be legal in Shift_JIS-2004.

utf8_to_sjis2004([UNICODE_CALLBACK,] STRING)

Converts UTF-8 to Shift_JIS-2004.

unicode_to_sjis2004([UNICODE_CALLBACK,] STRING)

Converts Unicode to Shift_JIS-2004.

This Unicode is in the Perl's internal format (see perlunicode). If SVf_UTF8 is not turned on, STRING is upgraded as an ISO 8859-1 (latin1) string.

utf16_to_sjis2004([UNICODE_CALLBACK,] STRING)

Converts UTF-16 (with or w/o BOM) to Shift_JIS-2004.

utf16le_to_sjis2004([UNICODE_CALLBACK,] STRING)

Converts UTF-16LE to Shift_JIS-2004.

utf16be_to_sjis2004([UNICODE_CALLBACK,] STRING)

Converts UTF-16BE to Shift_JIS-2004.

utf32_to_sjis2004([UNICODE_CALLBACK,] STRING)

Converts UTF-32 (with or w/o BOM) to Shift_JIS-2004.

utf32le_to_sjis2004([UNICODE_CALLBACK,] STRING)

Converts UTF-32LE to Shift_JIS-2004.

utf32be_to_sjis2004([UNICODE_CALLBACK,] STRING)

Converts UTF-32BE to Shift_JIS-2004.

utf8_to_sjis0213([UNICODE_CALLBACK,] STRING)

Converts UTF-8 to Shift_JISX0213.

unicode_to_sjis0213([UNICODE_CALLBACK,] STRING)

Converts Unicode to Shift_JISX0213.

This Unicode is in the Perl's internal format (see perlunicode). If SVf_UTF8 is not turned on, STRING is upgraded as an ISO 8859-1 (latin1) string.

utf16_to_sjis0213([UNICODE_CALLBACK,] STRING)

Converts UTF-16 (with or w/o BOM) to Shift_JISX0213.

utf16le_to_sjis0213([UNICODE_CALLBACK,] STRING)

Converts UTF-16LE to Shift_JISX0213.

utf16be_to_sjis0213([UNICODE_CALLBACK,] STRING)

Converts UTF-16BE to Shift_JISX0213.

utf32_to_sjis0213([UNICODE_CALLBACK,] STRING)

Converts UTF-32 (with or w/o BOM) to Shift_JISX0213.

utf32le_to_sjis0213([UNICODE_CALLBACK,] STRING)

Converts UTF-32LE to Shift_JISX0213.

utf32be_to_sjis0213([UNICODE_CALLBACK,] STRING)

Converts UTF-32BE to Shift_JISX0213.

Export

By default:

    sjis2004_to_utf8     utf8_to_sjis2004
    sjis2004_to_utf16le  utf16le_to_sjis2004
    sjis2004_to_utf16be  utf16be_to_sjis2004
    sjis2004_to_unicode  unicode_to_sjis2004

    sjis0213_to_utf8     utf8_to_sjis0213
    sjis0213_to_utf16le  utf16le_to_sjis0213
    sjis0213_to_utf16be  utf16be_to_sjis0213
    sjis0213_to_unicode  unicode_to_sjis0213

On request:

    sjis2004_to_utf32le  utf32le_to_sjis2004
    sjis2004_to_utf32be  utf32be_to_sjis2004
                         utf16_to_sjis2004 [*]
                         utf32_to_sjis2004 [*]

    sjis0213_to_utf32le  utf32le_to_sjis0213
    sjis0213_to_utf32be  utf32be_to_sjis0213
                         utf16_to_sjis0213 [*]
                         utf32_to_sjis0213 [*]

[*] Their counterparts sjis2004_to_utf16(), sjis2004_to_utf32(), sjis0213_to_utf16() and sjis0213_to_utf32() are not implemented yet. They need more investigation on return values from SJIS_CALLBACK... (concatenation needs recognition of and coping with BOM)

BUGS ^

On mapping between SJIS-X and Unicode used in this module, notice that:

AUTHOR ^

SADAHIRO Tomoyuki <SADAHIRO@cpan.org>

  Copyright(C) 2002-2007, SADAHIRO Tomoyuki. Japan. All rights reserved.

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

SEE ALSO ^

JIS X 0213:2000/Amd1:2004

7-bit and 8-bit double byte coded extended KANJI sets for information interchange

Japanese Industrial Standards Committee (JISC)

http://www.jisc.go.jp/

Japanese Standards Association (JSA)

http://www.jsa.or.jp/

Unihan database (Unicode version: 3.2.0) by Unicode (c)

http://www.unicode.org/Public/UNIDATA/Unihan.txt

JIS KANJI JITEN, the revised edition

edited by Shibano, published by Japanese Standards Association, 2002, Tokyo [ISBN4-542-20129-5]

ShiftJIS::CP932::MapUTF

conversion between Microsoft Windows CP-932 and Unicode

(CP932-Unicode mapping is different with Shift_JIS-2004-Unicode mapping, but what you desire may be the former.)

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