钱宇/Qian Yu

NAME

Encode::Detect::CJK - A Charset Detector, optimized for EastAsia charset and website content

SYNOPSIS

        use Encode::Detect::CJK; #just use
        
        use Encode::Detect::CJK qw(detect); #use and export function 
        
        #simple use it
        my $charset=CharsetDetector::detect($octets);
        
        #use it with advanced option
        my $charset = CharsetDetector::detect($octets,$max_len,$is_consider_html_head_charset);
        #return the charset of binary string $octets
        #$max_len if $octets 's size is big, will make detect slow, sometimes you need specify $max_len for detect,null is for DEFAULT(unlimit max_len)
        #$is_consider_html_header_charset, by DEFAULT, detetor will consider 
        #       html header (e.g. <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> ) as a factor to detect charset, 
        #       if you don't want detetor to consider html header as a factor, set $is_consider_html_header_charset to "" or 0

Basic Function

detect - detect the charset of string

        $charset=CharsetDetector::detect($octets,$max_len,$is_consider_html_head_charset);
        $charset=CharsetDetector::detect($octets,$max_len);#CharsetDetector::detect($octets,$max_len,1);
        $charset=CharsetDetector::detect($octets);#same as CharsetDetector::detect($octets,undef);

Param $octets - input binary string

input binary string

Param $max_len - max length for charset detector

if $octets 's size is big, will make detect slow, sometimes you need specify $max_len for detect,null is for DEFAULT(unlimit max_len) DEFAULT is unlimit

Param $is_consider_html_head_charset

by DEFAULT, detetor will consider html header (e.g. <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> ) as a factor to detect charset, if you don't want detetor to consider html header as a factor, set $is_consider_html_header_charset to "" or 0

Return Value $charset

if $octets is null return '' if $octets is '' return 'iso-8859-1' else return charset name

Supported Charset List

        return value: alias
        
        ascii       : ascii
        iso-8859-1  : iso-8859-1
        utf8        : utf8 utf-8-strict
        utf16       : utf16
        cp936       : euc-cn(gb2312) cp936(gbk) gb18030
        big5-eten   : big5-eten
        euc-jp      : euc-jp
        shiftjis    : shiftjis
        iso-2022-jp : iso-2022-jp
        euc-kr      : euc-kr
        iso-2022-kr : iso-2022-kr

COPYRIGHT

The CharsetDetector module is Copyright (c) 2003-2008 QIAN YU. All rights reserved.

You may distribute under the terms of either the GNU General Public License or the Artistic License, as specified in the Perl README file.