Jcode(e) User Contributed Perl Documentation Jcode(e) NAME Jcode - Japanese Charset Handler SYNOPSIS use Jcode; # # traditional Jcode::convert(\$str, $ocode, $icode, "z"); # or OOP! print Jcode->new($str)->h2z->tr($from, $to)->utf8; DESCRIPTION Jcode.pm supports both object and traditional approach. With object approach, you can go like; $iso_2022_jp = Jcode->new($str)->h2z->jis; Which is more elegant than; $iso_2022_jp = &jcode::convert(\$str,'jis',jcode::get- code(\str), "z"); For those unfamiliar with objects, Jcode.pm still supports getcode() and convert(). Methods Methods mentioned here all return Jcode object unless oth- erwise mentioned. $j = Jcode->new($str [, $icode]); Creates Jcode object $j from $str. Input code is automatically checked unless you explicitly set $icode. For available charset, see the getcode manpage below. The object keeps the string in EUC format enternaly. When the object itself is evaluated, it returns the EUC-converted string so you can "print $j;" without calling access method if you are using EUC (thanks to function overload). Passing Reference Instead of scalar value, You can use reference as Jcode->new(\$str); This saves time a little bit. In exchange of the value of $str being converted. (In a way, $str is now "tied" to jcode object). $j->set($str [, $icode]); Sets $j's internal string to $str. Handy when you use Jcode object repeatedly (saves time and memory to cre- ate object). # converts mailbox to SJIS format my $jconv = new Jcode; $/ = 00; while(<>){ print $jconv->set(\$_)->mime_decode->sjis; } $j->append($str [, $icode]); Appends $str to $j's internal string. $j = jcode($str [, $icode]); shortcut for Jcode->new() so you can go like; $sjis = jcode($str)->sjis; $euc = $j->euc; $jis = $j->jis; $sjis = $j->sjis; What you code is what you get :) $iso_2022_jp = $j->iso_2022_jp Same as $j->z2h->jis. Hankaku Kanas are forcibly con- verted to Zenkaku. [@lines =] $jcode->jfold([$bytes_per_line, $newline_str]); folds lines in jcode string every $bytes_per_line (default: 72) in a way that does not clobber the multibyte string. (Sorry, no Kinsoku done!) with a newline string spified by $newline_str (default: \n). Methods that use MIME::Base64 To use methods below, you need MIME::Base64. To install, simply perl -MCPAN -e 'CPAN::Shell->install("MIME::Base64")' $mime_header = $j->mime_encode([$lf, $bpl]); Converts $str to MIME-Header documented in RFC1522. When $lf is specified, it uses $lf to fold line (default: \n). When $bpl is specified, it uses $bpl for the number of bytes (default: 76; this number must be smaller than 76). $j->mime_decode; Decodes MIME-Header in Jcode object. You can retrieve the number of matches via $j->nmatch; Methods implemented by Jcode::H2Z Methods below are actually implemented in Jcode::H2Z. $j->h2z([$keep_dakuten]); Converts X201 kana (Hankaku) to X208 kana (Zenkaku). When $keep_dakuten is set, it leaves dakuten as is (That is, "ka + dakuten" is left as is instead of being converted to "ga") You can retrieve the number of matches via $j->nmatch; $j->z2h; Converts X208 kana (Zenkaku) to X201 kana (Hankazu). You can retrieve the number of matches via $j->nmatch; Methods implemented in Jcode::Tr Methods here are actually implemented in Jcode::Tr. $j->tr($from, $to); Applies tr on Jcode object. $from and $to can contain EUC Japanese. You can retrieve the number of matches via $j->nmatch; Methods implemented in Jcode::Unicode If your perl does not support XS (or you can't "perl Make- file.PL", Jcode::Unicode::NoXS will be used. See the Jcode::Unicode manpage and the Jcode::Uni- code::NoXS manpage for details $ucs2 = $j->ucs2; Returns UCS2 (Raw Unicode) string. $ucs2 = $j->utf8; Returns utf8 String. Instance Variables If you need to access instance variables of Jcode object, use access methods below instead of directly accessing them (That's what OOP is all about) FYI, Jcode uses a ref to array instead of ref to hash (common way) to optimize speed (Actually you don't have to know as long as you use access methods instead; Once again, that's OOP) $j->r_str Reference to the EUC-coded String. $j->icode Input charcode in recent operation. $j->nmatch Number of matches (Used in $j->tr, etc.) Subroutines ($code, [$nmatch]) = getcode($str); Returns char code of $str. Return codes are as follows ascii Ascii (Contains no Japanese Code) binary Binary (Not Text File) euc EUC-JP sjis SHIFT_JIS jis JIS (ISO-2022-JP) ucs2 UCS2 (Raw Unicode) utf8 UTF8 When array context is used instead of scaler, it also returns how many character codes are found. As men- tioned above, $str can be \$str instead. jcode.pl Users: This function is 100% upper-conpati- ble with jcode::getcode() -- well, almost; * When its return value is an array, the order is the opposite; jcode::getcode() returns $nmatch first. * jcode::getcode() returns 'undef' when the number of EUC characters is equal to that of SJIS. Jcode::getcode() returns EUC. for Jcode.pm there is no in-betweens. Jcode::convert($str, [$ocode, $icode, $opt]); Converts $str to char code specified by $ocode. When $icode is specified also, it assumes $icode for input string instead of the one checked by getcode(). As mentioned above, $str can be \$str instead. jcode.pl Users: This function is 100% upper-conpati- ble with jcode::convert() ! BUGS Unicode support by Jcode is far from efficient! ACKNOWLEDGEMENTS This package owes a lot in motivation, design, and code, to the jcode.pl for Perl4 by Kazumasa Utashiro <utashiro@iij.ad.jp>. Hiroki Ohzaki <ohzaki@iod.ricoh.co.jp> has helped me pol- ish regexp from the very first stage of development. And folks at Jcode Mailing list <jcode5@ring.gr.jp>. Without them, I couldn't have coded this far. SEE ALSO the Jcode::Unicode manpage the Jcode::Unicode::NoXS manpage COPYRIGHT Copyright 1999 Dan Kogai <dankogai@dan.co.jp> This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. 2001-06-13 perl v5.6.1 Jcode(e)