Char::UTF2 - Source code filter to escape UTF-2 script
There are two steps there:
You'll have to download Char/UTF2.pm and Char/Eutf2.pm and put it in your perl lib directory.
You'll need to write "use Char::UTF2;" at head of the script.
use Char::UTF2; use Char::UTF2 ver.sion; --- require minimum version use Char::UTF2 ver.sion.0; --- expects version (match or die) use Char::UTF2 qw(ord reverse getc); --- demand enhanced feature of ord, reverse, and getc use Char::UTF2 ver.sion qw(ord reverse getc); use Char::UTF2 ver.sion.0 qw(ord reverse getc); # "no Char::UTF2;" not supported or $ perl Char/UTF2.pm UTF-2_script.pl > Escaped_script.pl.e then $ perl Escaped_script.pl.e UTF-2_script.pl --- script written in UTF-2 Escaped_script.pl.e --- escaped script functions: Char::UTF2::ord(...); Char::UTF2::reverse(...); Char::UTF2::getc(...); Char::UTF2::length(...); Char::UTF2::substr(...); Char::UTF2::index(...); Char::UTF2::rindex(...); <*> glob(...); CORE::chop(...); CORE::ord(...); CORE::reverse(...); CORE::getc(...); CORE::index(...); CORE::rindex(...); emulate Perl5.6 on perl5.00503 use warnings; use warnings::register; emulate Perl5.16 use feature qw(fc); dummy functions: utf8::upgrade(...); utf8::downgrade(...); utf8::encode(...); utf8::decode(...); utf8::is_utf8(...); utf8::valid(...); bytes::chr(...); bytes::index(...); bytes::length(...); bytes::ord(...); bytes::rindex(...); bytes::substr(...);
Char::UTF2 software is "middleware" between perl interpreter and your Perl script written by UTF-2.
Perl is optimized for problems which are about 90% working with text and about 10% everything else. But this "text" means US-ASCII text, and popular UTF-2 is contained in "everything else."
Please be not disappointed.
The string of Perl3 or later can treat binary data. That is, the string of Perl3 or later can treat UTF-2.
Perl is designed to make the easy jobs easy, without making the hard jobs impossible. Char::UTF2 software is Perl program designed to make the "easy jobs easy".
By "use Char::UTF2;", it automatically interpret your script as UTF-2. The various functions of perl including a regular expression can treat UTF-2 now. The function length treats length per byte. This software does not use UTF8 flag.
JPerl is very useful software. -- Oops, note, this "JPerl" means "Japanized Perl" or "Japanese Perl". Therefore, it is unrelated to JPerl of the following.
JPerl is an implementation of Perl written in Java. http://www.javainc.com/projects/jperl/ jPerl - Perl on the JVM http://www.dzone.com/links/175948.html Jamie's PERL scripts for bioinformatics http://code.google.com/p/jperl/ jperl (Jonathan Perl) https://github.com/jperl
Now, the last version of JPerl is 5.005_04 and is not maintained now.
Japanization modifier WATANABE Hirofumi said,
"Because WATANABE am tired I give over maintaing JPerl."
at Slide #15: "The future of JPerl" of
ftp://ftp.oreilly.co.jp/pcjp98/watanabe/jperlconf.ppt
in The Perl Confernce Japan 1998.
When I heard it, I thought that someone excluding me would maintain JPerl. And I slept every night hanging a sock. Night and day, I kept having hope. After 10 years, I noticed that white beard exists in the sock :-)
This software is a source code filter to escape Perl script encoded by UTF-2 given from STDIN or command line parameter. The character code is never converted by escaping the script. Neither the value of the character nor the length of the character string change even if it escapes.
I learned the following things from the successful software.
Upper Compatibility like Perl4 to Perl5
Maximum Portability like jcode.pl
Handles Raw UTF-2, Doesn't use UTF8 flag like JPerl
Remains One Interpreter like Encode module
Code Set Independent like Ruby
There's more than one way to do it like Perl itself
I am excited about this software and its future --- I hope you are too.
+---------------------------------------+ | JPerl Application Script | Your Script +---------------------------------------+ | Source Code Filter, Runtime Routine | ex. Char/UTF2.pm, Char/Eutf2.pm +---------------------------------------+ | PVM 5.00503 or later | ex. perl 5.00503 +---------------------------------------+
A Perl Virtual Machine (PVM) enables a set of computer software programs and data structures to use a virtual machine model for the execution of other computer programs and scripts. The model used by a PVM accepts a form of computer intermediate language commonly referred to as Perl byteorientedcode. This language conceptually represents the instruction set of a byte-oriented, capability architecture.
I discovered this mail again recently.
[Tokyo.pm] jus Benkyoukai
http://mail.pm.org/pipermail/tokyo-pm/1999-September/001854.html
save as: SJIS.pm
package SJIS; use Filter::Util::Call; sub multibyte_filter { my $status; if (($status = filter_read()) > 0 ) { s/([\x81-\x9f\xe0-\xef])([\x40-\x7e\x80-\xfc])/ sprintf("\\x%02x\\x%02x",ord($1),ord($2)) /eg; } $status; } sub import { filter_add(\&multibyte_filter); } 1;
I am glad that I could confirm my idea is not so wrong.
The default command shells on DOS-like systems (COMMAND.COM or cmd.exe) do not expand wildcard arguments supplied to programs. Instead, import() of Char/Eutf2.pm works well.
in Char/Eutf2.pm # # @ARGV wildcard globbing # sub import() { if ($^O =~ /\A (?: MSWin32 | NetWare | symbian | dos ) \z/oxms) { my @argv = (); for (@ARGV) { # has space if (/\A (?:$q_char)*? [ ] /oxms) { if (my @glob = Char::Eutf2::glob(qq{"$_"})) { push @argv, @glob; } else { push @argv, $_; } } # has wildcard metachar elsif (/\A (?:$q_char)*? [*?] /oxms) { if (my @glob = Char::Eutf2::glob($_)) { push @argv, @glob; } else { push @argv, $_; } } # no wildcard globbing else { push @argv, $_; } } @ARGV = @argv; } }
Char/UTF2.pm --- source code filter to escape UTF-2 Char/Eutf2.pm --- run-time routines for Char/UTF2.pm perl5.bat --- find and run perl5 without %PATH% settings perl55.bat --- find and run perl5.5 without %PATH% settings perl56.bat --- find and run perl5.6 without %PATH% settings perl58.bat --- find and run perl5.8 without %PATH% settings perl510.bat --- find and run perl5.10 without %PATH% settings perl512.bat --- find and run perl5.12 without %PATH% settings perl514.bat --- find and run perl5.14 without %PATH% settings perl516.bat --- find and run perl5.16 without %PATH% settings perl64.bat --- find and run perl64 without %PATH% settings perl64512.bat --- find and run perl5.12 (x64) without %PATH% settings perl64514.bat --- find and run perl5.14 (x64) without %PATH% settings perl64516.bat --- find and run perl5.16 (x64) without %PATH% settings aperl58.bat --- find and run ActivePerl 5.8 without %PATH% settings aperl510.bat --- find and run ActivePerl 5.10 without %PATH% settings aperl512.bat --- find and run ActivePerl 5.12 without %PATH% settings aperl514.bat --- find and run ActivePerl 5.14 without %PATH% settings aperl516.bat --- find and run ActivePerl 5.16 without %PATH% settings aperl64512.bat --- find and run ActivePerl 5.12 (x64) without %PATH% settings aperl64514.bat --- find and run ActivePerl 5.14 (x64) without %PATH% settings aperl64516.bat --- find and run ActivePerl 5.16 (x64) without %PATH% settings sperl58.bat --- find and run Strawberry Perl 5.8 without %PATH% settings sperl510.bat --- find and run Strawberry Perl 5.10 without %PATH% settings sperl512.bat --- find and run Strawberry Perl 5.12 without %PATH% settings sperl514.bat --- find and run Strawberry Perl 5.14 without %PATH% settings sperl516.bat --- find and run Strawberry Perl 5.16 without %PATH% settings sperl64512.bat --- find and run Strawberry Perl 5.12 (x64) without %PATH% settings sperl64514.bat --- find and run Strawberry Perl 5.14 (x64) without %PATH% settings sperl64516.bat --- find and run Strawberry Perl 5.16 (x64) without %PATH% settings strict.pm_ --- dummy strict.pm warnings.pm_ --- poor warnings.pm warnings/register.pm_ --- poor warnings/register.pm feature.pm_ --- dummy feature.pm
This software adds the function by 'Escaping' it always, and nothing of the past is broken. Therefore, 'Possible job' never becomes 'Impossible job'. This approach is effective in the field where the retreat is never permitted. Modern Perl/perl can not always solve the problem. Often, it means an incompatible upgrade part to traditional Perl should be rewound.
You need write 'use Char::UTF2;' in your script.
--------------------------------- Before You do --------------------------------- (nothing) use Char::UTF2; ---------------------------------
Char/UTF2.pm applies multiple-octet anchoring at beginning of regular expression.
-------------------------------------------------------------------------------- Before After -------------------------------------------------------------------------------- m/regexp/ m/${Char::Eutf2::anchor}(?:regexp).../ --------------------------------------------------------------------------------
Char/UTF2.pm clusters multiple-octet character with quantifier, makes cluster from multiple-octet custom character classes. And makes multiple-octet version metasymbol from classic Perl character class shortcuts and POSIX-style character classes.
-------------------------------------------------------------------------------- Before After -------------------------------------------------------------------------------- m/...MULTIOCT+.../ m/...(?:MULTIOCT)+.../ m/...[AN-EM].../ m/...(?:A[N-Z]|[B-D][A-Z]|E[A-M]).../ m/...\D.../ m/...(?:${Char::Eutf2::eD}).../ m/...[[:^digit:]].../ m/...(?:${Char::Eutf2::not_digit}).../ --------------------------------------------------------------------------------
Char/UTF2.pm applies calling 'Char::Eutf2::ignorecase()' instead of /i modifier.
-------------------------------------------------------------------------------- Before After -------------------------------------------------------------------------------- m/...$var.../i m/...@{[Char::Eutf2::ignorecase($var)]}.../ --------------------------------------------------------------------------------
Regular expression works as character-oriented that has no /b modifier.
-------------------------------------------------------------------------------- Before After -------------------------------------------------------------------------------- /regexp/ /ditto$Char::Eutf2::matched/ m/regexp/ m/ditto$Char::Eutf2::matched/ ?regexp? m?ditto$Char::Eutf2::matched? m?regexp? m?ditto$Char::Eutf2::matched? $_ =~ ($_ =~ m/ditto$Char::Eutf2::matched/) ? s/regexp/replacement/ eval{ Char::Eutf2::s_matched(); local $^W=0; my $__r=qq/replacement/; $_="${1}$__r$'"; 1 } : undef $_ !~ ($_ !~ m/ditto$Char::Eutf2::matched/) ? s/regexp/replacement/ 1 : eval{ Char::Eutf2::s_matched(); local $^W=0; my $__r=qq/replacement/; $_="${1}$__r$'"; undef } split(/regexp/) Char::Eutf2::split(qr/regexp/) split(m/regexp/) Char::Eutf2::split(qr/regexp/) split(qr/regexp/) Char::Eutf2::split(qr/regexp/) qr/regexp/ qr/ditto$Char::Eutf2::matched/ --------------------------------------------------------------------------------
Regular expression works as byte-oriented that has /b modifier.
-------------------------------------------------------------------------------- Before After -------------------------------------------------------------------------------- /regexp/b /(?:regexp)$Char::Eutf2::matched/ m/regexp/b m/(?:regexp)$Char::Eutf2::matched/ ?regexp?b m?regexp$Char::Eutf2::matched? m?regexp?b m?regexp$Char::Eutf2::matched? $_ =~ ($_ =~ m/(\G[\x00-\xFF]*?)(?:regexp)$Char::Eutf2::matched/) ? s/regexp/replacement/b eval{ Char::Eutf2::s_matched(); local $^W=0; my $__r=qq/replacement/; $_="${1}$__r$'"; 1 } : undef $_ !~ ($_ !~ m/(\G[\x00-\xFF]*?)(?:regexp)$Char::Eutf2::matched/) ? s/regexp/replacement/b 1 : eval{ Char::Eutf2::s_matched(); local $^W=0; my $__r=qq/replacement/; $_="${1}$__r$'"; undef } split(/regexp/b) split(qr/regexp/) split(m/regexp/b) split(qr/regexp/) split(qr/regexp/b) split(qr/regexp/) qr/regexp/b qr/(?:regexp)$Char::Eutf2::matched/ --------------------------------------------------------------------------------
The character classes are redefined as follows to backward compatibility.
--------------------------------------------------------------- Before After --------------------------------------------------------------- . ${Char::Eutf2::dot} ${Char::Eutf2::dot_s} (/s modifier) \d [0-9] \s [\x09\x0A\x0C\x0D\x20] \w [0-9A-Z_a-z] \D ${Char::Eutf2::eD} \S ${Char::Eutf2::eS} \W ${Char::Eutf2::eW} \h [\x09\x20] \v [\x0A\x0B\x0C\x0D] \H ${Char::Eutf2::eH} \V ${Char::Eutf2::eV} \C [\x00-\xFF] \X X (so, just 'X') \R ${Char::Eutf2::eR} \N ${Char::Eutf2::eN} ---------------------------------------------------------------
Also POSIX-style character classes.
--------------------------------------------------------------- Before After --------------------------------------------------------------- [:alnum:] [\x30-\x39\x41-\x5A\x61-\x7A] [:alpha:] [\x41-\x5A\x61-\x7A] [:ascii:] [\x00-\x7F] [:blank:] [\x09\x20] [:cntrl:] [\x00-\x1F\x7F] [:digit:] [\x30-\x39] [:graph:] [\x21-\x7F] [:lower:] [\x61-\x7A] [\x41-\x5A\x61-\x7A] (/i modifier) [:print:] [\x20-\x7F] [:punct:] [\x21-\x2F\x3A-\x3F\x40\x5B-\x5F\x60\x7B-\x7E] [:space:] [\x09\x0A\x0B\x0C\x0D\x20] [:upper:] [\x41-\x5A] [\x41-\x5A\x61-\x7A] (/i modifier) [:word:] [\x30-\x39\x41-\x5A\x5F\x61-\x7A] [:xdigit:] [\x30-\x39\x41-\x46\x61-\x66] [:^alnum:] ${Char::Eutf2::not_alnum} [:^alpha:] ${Char::Eutf2::not_alpha} [:^ascii:] ${Char::Eutf2::not_ascii} [:^blank:] ${Char::Eutf2::not_blank} [:^cntrl:] ${Char::Eutf2::not_cntrl} [:^digit:] ${Char::Eutf2::not_digit} [:^graph:] ${Char::Eutf2::not_graph} [:^lower:] ${Char::Eutf2::not_lower} ${Char::Eutf2::not_lower_i} (/i modifier) [:^print:] ${Char::Eutf2::not_print} [:^punct:] ${Char::Eutf2::not_punct} [:^space:] ${Char::Eutf2::not_space} [:^upper:] ${Char::Eutf2::not_upper} ${Char::Eutf2::not_upper_i} (/i modifier) [:^word:] ${Char::Eutf2::not_word} [:^xdigit:] ${Char::Eutf2::not_xdigit} ---------------------------------------------------------------
Also \b and \B are redefined as follows to backward compatibility.
--------------------------------------------------------------- Before After --------------------------------------------------------------- \b ${Char::Eutf2::eb} \B ${Char::Eutf2::eB} ---------------------------------------------------------------
Definitions in Char/Eutf2.pm.
--------------------------------------------------------------------------------------------------------------------------------------------------------- After Definition --------------------------------------------------------------------------------------------------------------------------------------------------------- ${Char::Eutf2::anchor} qr{\G(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF])*?} ${Char::Eutf2::dot} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF\x0A])} ${Char::Eutf2::dot_s} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF])} ${Char::Eutf2::eD} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF0-9])} ${Char::Eutf2::eS} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF\x09\x0A\x0C\x0D\x20])} ${Char::Eutf2::eW} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF0-9A-Z_a-z])} ${Char::Eutf2::eH} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF\x09\x20])} ${Char::Eutf2::eV} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF\x0A\x0B\x0C\x0D])} ${Char::Eutf2::eR} qr{(?:\x0D\x0A|[\x0A\x0D])} ${Char::Eutf2::eN} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF\x0A])} ${Char::Eutf2::not_alnum} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF\x30-\x39\x41-\x5A\x61-\x7A])} ${Char::Eutf2::not_alpha} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF\x41-\x5A\x61-\x7A])} ${Char::Eutf2::not_ascii} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF\x00-\x7F])} ${Char::Eutf2::not_blank} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF\x09\x20])} ${Char::Eutf2::not_cntrl} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF\x00-\x1F\x7F])} ${Char::Eutf2::not_digit} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF\x30-\x39])} ${Char::Eutf2::not_graph} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF\x21-\x7F])} ${Char::Eutf2::not_lower} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF\x61-\x7A])} ${Char::Eutf2::not_lower_i} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF])} ${Char::Eutf2::not_print} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF\x20-\x7F])} ${Char::Eutf2::not_punct} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF\x21-\x2F\x3A-\x3F\x40\x5B-\x5F\x60\x7B-\x7E])} ${Char::Eutf2::not_space} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF\x09\x0A\x0B\x0C\x0D\x20])} ${Char::Eutf2::not_upper} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF\x41-\x5A])} ${Char::Eutf2::not_upper_i} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF])} ${Char::Eutf2::not_word} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF\x30-\x39\x41-\x5A\x5F\x61-\x7A])} ${Char::Eutf2::not_xdigit} qr{(?:(?:[\xC2-\xDF]|[\xE0-\xE0][\xA0-\xBF]|[\xE1-\xEC][\x80-\xBF]|[\xED-\xED][\x80-\x9F]|[\xEE-\xEF][\x80-\xBF]|[\xF0-\xF0][\x90-\xBF][\x80-\xBF]|[\xF1-\xF3][\x80-\xBF][\x80-\xBF]|[\xF4-\xF4][\x80-\x8F][\x80-\xBF])[\x00-\xFF]|[^\x80-\xFF\x30-\x39\x41-\x46\x61-\x66])} ${Char::Eutf2::eb} qr{(?:\A(?=[0-9A-Z_a-z])|(?<=[\x00-\x2F\x40\x5B-\x5E\x60\x7B-\xFF])(?=[0-9A-Z_a-z])|(?<=[0-9A-Z_a-z])(?=[\x00-\x2F\x40\x5B-\x5E\x60\x7B-\xFF]|\z))} ${Char::Eutf2::eB} qr{(?:(?<=[0-9A-Z_a-z])(?=[0-9A-Z_a-z])|(?<=[\x00-\x2F\x40\x5B-\x5E\x60\x7B-\xFF])(?=[\x00-\x2F\x40\x5B-\x5E\x60\x7B-\xFF]))} ---------------------------------------------------------------------------------------------------------------------------------------------------------
Char/UTF2.pm removes '\' at head of alphanumeric regexp metasymbols \N, \p, \P and \X. By this method, you can avoid the trap of the abstraction.
See also, Deprecate literal unescaped "{" in regexes. http://perl5.git.perl.org/perl.git/commit/2a53d3314d380af5ab5283758219417c6dfa36e9
------------------------------------ Before After ------------------------------------ \N{CHARNAME} N\{CHARNAME} \p{L} p\{L} \p{^L} p\{^L} \p{\^L} p\{\^L} \pL pL \P{L} P\{L} \P{^L} P\{^L} \P{\^L} P\{\^L} \PL PL \X X ------------------------------------
Insert 'Char::Eutf2::' at head of function name. Char/Eutf2.pm provides your script Char::Eutf2::* functions.
------------------------------------------- Before After Works as ------------------------------------------- length length Byte substr substr Byte pos pos Byte split Char::Eutf2::split Character tr/// Char::Eutf2::tr Character tr///b tr/// Byte tr///B tr/// Byte y/// Char::Eutf2::tr Character y///b tr/// Byte y///B tr/// Byte chop Char::Eutf2::chop Character index Char::Eutf2::index Character rindex Char::Eutf2::rindex Character lc Char::Eutf2::lc Character lcfirst Char::Eutf2::lcfirst Character uc Char::Eutf2::uc Character ucfirst Char::Eutf2::ucfirst Character fc Char::Eutf2::fc Character chr Char::Eutf2::chr Character glob Char::Eutf2::glob Character ------------------------------------------- ------------------------------------------------------------------------------------------------------------------------ Before After ------------------------------------------------------------------------------------------------------------------------ use Perl::Module; BEGIN { require 'Perl/Module.pm'; Perl::Module->import() if Perl::Module->can('import'); } use Perl::Module @list; BEGIN { require 'Perl/Module.pm'; Perl::Module->import(@list) if Perl::Module->can('import'); } use Perl::Module (); BEGIN { require 'Perl/Module.pm'; } no Perl::Module; BEGIN { require 'Perl/Module.pm'; Perl::Module->unimport() if Perl::Module->can('unimport'); } no Perl::Module @list; BEGIN { require 'Perl/Module.pm'; Perl::Module->unimport(@list) if Perl::Module->can('unimport'); } no Perl::Module (); BEGIN { require 'Perl/Module.pm'; } ------------------------------------------------------------------------------------------------------------------------
You need write 'Char::UTF2::' at head of function name when you want character- oriented function. See 'Character-Oriented Functions'.
-------------------------------------------------------- Function Character-Oriented Description -------------------------------------------------------- ord Char::UTF2::ord reverse Char::UTF2::reverse getc Char::UTF2::getc length Char::UTF2::length substr Char::UTF2::substr index Char::UTF2::index See 'About Indexes' rindex Char::UTF2::rindex See 'About Rindexes' -------------------------------------------------------- About Indexes ------------------------------------------------------------------------- Function Works as Returns as Description ------------------------------------------------------------------------- index Character Byte JPerl semantics (most useful) (same as Char::Eutf2::index) Char::UTF2::index Character Character Character-oriented semantics CORE::index Byte Byte Byte-oriented semantics (nothing) Byte Character (most useless) ------------------------------------------------------------------------- About Rindexes ------------------------------------------------------------------------- Function Works as Returns as Description ------------------------------------------------------------------------- rindex Character Byte JPerl semantics (most useful) (same as Char::Eutf2::rindex) Char::UTF2::rindex Character Character Character-oriented semantics CORE::rindex Byte Byte Byte-oriented semantics (nothing) Byte Character (most useless) -------------------------------------------------------------------------
Ordinal Value of Character
$ord = Char::UTF2::ord($string); This function returns the numeric value (ASCII or UTF-2 character) of the first character of $string, not Unicode. If $string is omitted, it uses $_. The return value is always unsigned. If you import ord "use Char::UTF2 qw(ord);", ord of your script will be rewritten in Char::UTF2::ord. Char::UTF2::ord is not compatible with ord of JPerl. Even if you do not know this function, there is no problem. This function can be created with a unpack function as before.
Reverse List or String
@reverse = Char::UTF2::reverse(@list); $reverse = Char::UTF2::reverse(@list); In list context, this function returns a list value consisting of the elements of @list in the opposite order. In scalar context, the function concatenates all the elements of @list and then returns the reverse of that resulting string, character by character. If you import reverse "use Char::UTF2 qw(reverse);", reverse of your script will be rewritten in Char::UTF2::reverse. Char::UTF2::reverse is not compatible with reverse of JPerl. Even if you do not know this function, there is no problem. This function can be created with $rev = join('', reverse(split(//, $jstring))); as before.
Returns Next Character
$getc = Char::UTF2::getc(FILEHANDLE); $getc = Char::UTF2::getc($filehandle); $getc = Char::UTF2::getc; This function returns the next character from the input file attached to FILEHANDLE. It returns undef at end-of-file, or if an I/O error was encountered. If FILEHANDLE is omitted, the function reads from STDIN. This function is somewhat slow, but it's occasionally useful for single-character input from the keyboard -- provided you manage to get your keyboard input unbuffered. This function requests unbuffered input from the standard I/O library. Unfortunately, the standard I/O library is not so standard as to provide a portable way to tell the underlying operating system to supply unbuffered keyboard input to the standard I/O system. To do that, you have to be slightly more clever, and in an operating-system-dependent fashion. Under Unix you might say this: if ($BSD_STYLE) { system "stty cbreak </dev/tty >/dev/tty 2>&1"; } else { system "stty", "-icanon", "eol", "\001"; } $key = Char::UTF2::getc; if ($BSD_STYLE) { system "stty -cbreak </dev/tty >/dev/tty 2>&1"; } else { system "stty", "icanon", "eol", "^@"; # ASCII NUL } print "\n"; This code puts the next character typed on the terminal in the string $key. If your stty program has options like cbreak, you'll need to use the code where $BSD_STYLE is true. Otherwise, you'll need to use the code where it is false. If you import getc "use Char::UTF2 qw(getc);", getc of your script will be rewritten in Char::UTF2::getc. Char::UTF2::getc is not compatible with getc of JPerl. Even if you do not know this function, there is no problem. This function can be created with CORE::getc as before.
Length by UTF-2 Character
$length = Char::UTF2::length($string); $length = Char::UTF2::length(); This function returns the length in characters (programmer-visible characters) of the scalar value $string. If $string is omitted, it returns the Char::UTF2::length of $_. Do not try to use Char::UTF2::length to find the size of an array or hash. Use scalar @array for the size of an array, and scalar keys %hash for the number of key/value pairs in a hash. (The scalar is typically omitted when redundant.) To find the length of a string in bytes rather than characters, say simply: $bytes = length($string); Even if you do not know this function, there is no problem. This function can be created with $len = split(//, $jstring); as before.
Substr by UTF-2 Character
$substr = Char::UTF2::substr($string,$offset,$length,$replacement); $substr = Char::UTF2::substr($string,$offset,$length); $substr = Char::UTF2::substr($string,$offset); This function extracts a substring out of the string given by $string and returns it. The substring is extracted starting at $offset characters from the front of the string. If $offset is negative, the substring starts that far from the end of the string instead. If $length is omitted, everything to the end of the string is returned. If $length is negative, the length is calculated to leave that many characters off the end of the string. Otherwise, $length indicates the length of the substring to extract, which is sort of what you'd expect. For bytes, use the substr from built-in Perl functions. An alternative to using Char::UTF2::substr as an lvalue is to specify the $replacement string as the fourth argument. This lets you replace parts of the $string and return what was there before in one operation, just as you can with splice. The next example also replaces the last character of $var with "Curly" and puts that replaced character into $oldstr: $oldstr = Char::UTF2::substr($var, -1, 1, "Curly"); To prepend the string "Larry" to the current value of $var, use: Char::UTF2::substr($var, 0, 0, "Larry"); To instead replace the first character of $var with "Moe", use: Char::UTF2::substr($var, 0, 1, "Moe"); And, finally, to replace the last character of $var with "Curly", use: Char::UTF2::substr($var, -1, 1, "Curly");
Index by UTF-2 Character
$index = Char::UTF2::index($string,$substring,$offset); $index = Char::UTF2::index($string,$substring); This function searches for one string within another. It returns the character position of the first occurrence of $substring in $string. The $offset, if specified, says how many characters from the start to skip before beginning to look. Positions are based at 0. If the substring is not found, the function returns one less than the base, ordinarily -1. To work your way through a string, you might say: $pos = -1; while (($pos = Char::UTF2::index($string, $lookfor, $pos)) > -1) { print "Found at $pos\n"; $pos++; } This function is realizable with a regular expression as before. There is no problem even if you do not know this function.
Rindex by UTF-2 Character
$rindex = Char::UTF2::rindex($string,$substring,$offset); $rindex = Char::UTF2::rindex($string,$substring); This function works just like Char::UTF2::index except that it returns the character position of the last occurrence of $substring in $string (a reverse Char::UTF2::index). The function returns -1 if $substring is not found. $offset, if specified, is the rightmost character position that may be returned. To work your way through a string backward, say: $pos = Char::UTF2::length($string); while (($pos = Char::UTF2::rindex($string, $lookfor, $pos)) >= 0) { print "Found at $pos\n"; $pos--; } This function is realizable with a regular expression as before. There is no problem even if you do not know this function.
Filename Globbing
@glob = glob($expr); $glob = glob($expr); @glob = glob; $glob = glob; @glob = <*>; $glob = <*>; Performs filename expansion (globbing) on $expr, returning the next successive name on each call. If $expr is omitted, $_ is globbed instead. This operator is implemented via the Char::Eutf2::glob() function. See Char::Eutf2::glob of Char/Eutf2.pm for details.
Chop Byte String
$byte = CORE::chop($string); $byte = CORE::chop(@list); $byte = CORE::chop; This function chops off the last byte of a string variable and returns the byte chopped. The CORE::chop operator is used primarily to remove the newline from the end of an input record, and is more efficient than using a substitution (s/\n$//). If that's all you're doing, then it would be safer to use chomp, since CORE::chop always shortens the string no matter what's there, and chomp is more selective. You cannot CORE::chop a literal, only a variable. If you CORE::chop a @list of variables, each string in the list is chopped: @lines = `cat myfile`; CORE::chop @lines; You can CORE::chop anything that is an lvalue, including an assignment: CORE::chop($cwd = `pwd`); CORE::chop($answer = <STDIN>); This is different from: $answer = CORE::chop($temp = <STDIN>); # WRONG which puts a newline into $answer because CORE::chop returns the byte chopped, not the remaining string (which is in $tmp). One way to get the result intended here is with substr: $answer = substr <STDIN>, 0, -1; But this is more commonly written as: CORE::chop($answer = <STDIN>); In the most general case, CORE::chop can be expressed in terms of substr: $last_byte = CORE::chop($var); $last_byte = substr($var, -1, 1, ""); # same thing Once you understand this equivalence, you can use it to do bigger chops. To CORE::chop more than one byte, use substr as an lvalue, assigning a null string. The following removes the last five bytes of $caravan: substr($caravan, -5) = ""; The negative subscript causes substr to count from the end of the string instead of the beginning. If you wanted to save the bytes so removed, you could use the four-argument form of substr, creating something of a quintuple CORE::chop: $tail = substr($caravan, -5, 5, ""); If no argument is given, the function chops the $_ variable.
Ordinal Value of Byte
$ord = CORE::ord($expr); This function returns the numeric value of the first byte of $expr, regardless of "use Char::UTF2 qw(ord);" exists or not. If $expr is omitted, it uses $_. The return value is always unsigned. If you want a signed value, use unpack('c',$expr). If you want all the bytes of the string converted to a list of numbers, use unpack('C*',$expr) instead.
Reverse List or Byte String
@reverse = CORE::reverse(@list); $reverse = CORE::reverse(@list); In list context, this function returns a list value consisting of the elements of @list in the opposite order. In scalar context, the function concatenates all the elements of @list and then returns the reverse of that resulting string, byte by byte, regardless of "use Char::UTF2 qw(reverse);" exists or not.
Returns Next Byte
$getc = CORE::getc(FILEHANDLE); $getc = CORE::getc($filehandle); $getc = CORE::getc; This function returns the next byte from the input file attached to FILEHANDLE. It returns undef at end-of-file, or if an I/O error was encountered. If FILEHANDLE is omitted, the function reads from STDIN. This function is somewhat slow, but it's occasionally useful for single-byte input from the keyboard -- provided you manage to get your keyboard input unbuffered. This function requests unbuffered input from the standard I/O library. Unfortunately, the standard I/O library is not so standard as to provide a portable way to tell the underlying operating system to supply unbuffered keyboard input to the standard I/O system. To do that, you have to be slightly more clever, and in an operating-system-dependent fashion. Under Unix you might say this: if ($BSD_STYLE) { system "stty cbreak </dev/tty >/dev/tty 2>&1"; } else { system "stty", "-icanon", "eol", "\001"; } $key = CORE::getc; if ($BSD_STYLE) { system "stty -cbreak </dev/tty >/dev/tty 2>&1"; } else { system "stty", "icanon", "eol", "^@"; # ASCII NUL } print "\n"; This code puts the next single-byte typed on the terminal in the string $key. If your stty program has options like cbreak, you'll need to use the code where $BSD_STYLE is true. Otherwise, you'll need to use the code where it is false.
Index by Byte String
$index = CORE::index($string,$substring,$offset); $index = CORE::index($string,$substring); This function searches for one byte string within another. It returns the position of the first occurrence of $substring in $string. The $offset, if specified, says how many bytes from the start to skip before beginning to look. Positions are based at 0. If the substring is not found, the function returns one less than the base, ordinarily -1. To work your way through a string, you might say: $pos = -1; while (($pos = CORE::index($string, $lookfor, $pos)) > -1) { print "Found at $pos\n"; $pos++; }
Rindex by Byte String
$rindex = CORE::rindex($string,$substring,$offset); $rindex = CORE::rindex($string,$substring); This function works just like CORE::index except that it returns the position of the last occurrence of $substring in $string (a reverse CORE::index). The function returns -1 if not $substring is found. $offset, if specified, is the rightmost position that may be returned. To work your way through a string backward, say: $pos = CORE::length($string); while (($pos = CORE::rindex($string, $lookfor, $pos)) >= 0) { print "Found at $pos\n"; $pos--; }
Char/UTF2.pm removes 'bytes::' at head of function name.
--------------------------------------- Before After Works as --------------------------------------- bytes::chr chr Byte bytes::index index Byte bytes::length length Byte bytes::ord ord Byte bytes::rindex rindex Byte bytes::substr substr Byte ---------------------------------------
Char/Eutf2.pm does "BEGIN { unshift @INC, '/Perl/site/lib/Char::UTF2' }" at head. Store the standard module modified for Char::UTF2 software in this directory to override built-in standard modules.
You need copy built-in standard module to /Perl/site/lib/Char::UTF2 and change 'use utf8;' to 'use Char::UTF2;' in its. You need help yourself for now.
Back to and see 'Escaping Your Script'. Enjoy hacking!!
----------------------------------------------------------- Before After ----------------------------------------------------------- use strict; use strict; no strict qw(refs); use 5.12.0; use 5.12.0; no strict qw(refs); require utf8; # require utf8; require bytes; # require bytes; require charnames; # require charnames; require I18N::Japanese; # require I18N::Japanese; require I18N::Collate; # require I18N::Collate; require I18N::JExt; # require I18N::JExt; require File::DosGlob; # require File::DosGlob; require Wild; # require Wild; require Wildcard; # require Wildcard; require Japanese; # require Japanese; use utf8; # use utf8; use bytes; # use bytes; use charnames; # use charnames; use I18N::Japanese; # use I18N::Japanese; use I18N::Collate; # use I18N::Collate; use I18N::JExt; # use I18N::JExt; use File::DosGlob; # use File::DosGlob; use Wild; # use Wild; use Wildcard; # use Wildcard; use Japanese; # use Japanese; no utf8; # no utf8; no bytes; # no bytes; no charnames; # no charnames; no I18N::Japanese; # no I18N::Japanese; no I18N::Collate; # no I18N::Collate; no I18N::JExt; # no I18N::JExt; no File::DosGlob; # no File::DosGlob; no Wild; # no Wild; no Wildcard; # no Wildcard; no Japanese; # no Japanese; ----------------------------------------------------------- Comment out pragma to ignore utf8 environment, and Char/Eutf2.pm provides these functions.
Dummy utf8::upgrade
$num_octets = utf8::upgrade($string); Returns the number of octets necessary to represent the string.
Dummy utf8::downgrade
$success = utf8::downgrade($string[, FAIL_OK]); Returns true always.
Dummy utf8::encode
utf8::encode($string); Returns nothing.
Dummy utf8::decode
$success = utf8::decode($string); Returns true always.
Dummy utf8::is_utf8
$flag = utf8::is_utf8(STRING); Returns false always.
Dummy utf8::valid
$flag = utf8::valid(STRING); Returns true always.
Dummy bytes::chr
This function is same as chr.
Dummy bytes::index
This function is same as index.
Dummy bytes::length
This function is same as length.
Dummy bytes::ord
This function is same as ord.
Dummy bytes::rindex
This function is same as rindex.
Dummy bytes::substr
This function is same as substr.
This software uses the flock function for exclusive control. The execution of the program is blocked until it becomes possible to read or write the file. You can have it not block in the flock function by defining environment variable SJIS_NONBLOCK. Example: SET SJIS_NONBLOCK=1 (The value '1' doesn't have the meaning)
Using warnings pragma on perl5.00503 by rename files. warnings.pm_ --> warnings.pm warnings/register.pm_ --> warnings/register.pm
Using feature pragma by rename files. feature.pm_ --> feature.pm
I have tested and verified this software using the best of my ability. However, a software containing much regular expression is bound to contain some bugs. Thus, if you happen to find a bug that's in Char::UTF2 software and not your own program, you can try to reduce it to a minimal test case and then report it to the following author's address. If you have an idea that could make this a more useful tool, please let everyone share it.
format
Function "format" can't handle multiple-octet code same as original Perl.
cloister of regular expression
The cloister (?s) and (?i) of a regular expression will not be implemented for the time being. Cloister (?s) can be substituted with the .(dot) and \N on /s modifier. Cloister (?i) can be substituted with \F...\E.
Char::UTF2::substr as Lvalue
Char::UTF2::substr differs from CORE::substr, and cannot be used as a lvalue. To change part of a string, you can use the optional fourth argument which is the replacement string.
Char::UTF2::substr($string, 13, 4, "JPerl");
Special Variables $` and $& need /( Capture All )/
Because $` and $& use $1. ------------------------------------------------------------------------------------------- Before After Works as ------------------------------------------------------------------------------------------- $` Char::Eutf2::PREMATCH() CORE::substr($&,0,CORE::length($&)-CORE::length($1)) $PREMATCH Char::Eutf2::PREMATCH() CORE::substr($&,0,CORE::length($&)-CORE::length($1)) ${^PREMATCH} Char::Eutf2::PREMATCH() CORE::substr($&,0,CORE::length($&)-CORE::length($1)) $& Char::Eutf2::MATCH() $1 $MATCH Char::Eutf2::MATCH() $1 ${^MATCH} Char::Eutf2::MATCH() $1 $' Char::Eutf2::POSTMATCH() $' $POSTMATCH Char::Eutf2::POSTMATCH() $' ${^POSTMATCH} Char::Eutf2::POSTMATCH() $' -------------------------------------------------------------------------------------------
Limitation of Regular Expression
This software has limitation from \G in multibyte anchoring. On perl5.006, perl5.008, perl5.010, perl5.012, perl5.014 and perl5.016 it doesn't match in the place in which it should match at over 32,767 octets. Moreover, at that time, neither the error nor warning are displayed.
see also, Bug #89792 \G can't treat over 32,767 octets http://bugs.activestate.com/show_bug.cgi?id=89792 [perl #116379] \G can't treat over 32767 octet http://www.nntp.perl.org/group/perl.perl5.porters/2013/01/msg197320.html
Empty Variable in Regular Expression
Unlike literal null string, an interpolated variable evaluated to the empty string can't use the most recent pattern from a previous successful regular expression.
Limitation of ?? and m??
Multibyte character needs ( ) which is before {n,m} {n,} {n} * and + in ?? or m??. As a result, you need to rewrite a script about $1,$2,$3,... You cannot use (?: ) ? {n,m}? {n,}? and {n}? in ?? and m??, because delimiter of m?? is '?'.
Modifier /a /d /l and /u of Regular Expression
The concept of this software is not to use two or more encoding methods at the same time. Therefore, modifier /a /d /l and /u are not supported. \d means [0-9] always.
INABA Hitoshi <ina@cpan.org>
This project was originated by INABA Hitoshi.
This software is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic.
This software is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
P.401 See chapter 15: Unicode of ISBN 0-596-00027-8 Programming Perl Third Edition.
Before the introduction of Unicode support in perl, The eq operator just compared the byte-strings represented by two scalars. Beginning with perl 5.8, eq compares two byte-strings with simultaneous consideration of the UTF8 flag.
Information processing model beginning with perl 5.8 +----------------------+---------------------+ | Text strings | | +----------+-----------| Binary strings | | UTF8 | Latin-1 | | +----------+-----------+---------------------+ | UTF8 | Not UTF8 | | Flagged | Flagged | +--------------------------------------------+ http://perl-users.jp/articles/advent-calendar/2010/casual/4 You should memorize this figure. (Why is only Latin-1 special?)
This change consequentially made a big gap between a past script and new script. Both scripts cannot re-use the code mutually any longer. Because a new method puts a strain in the programmer, it will still take time to replace all the in existence scripts.
The biggest problem of new method is that the UTF8 flag can't synchronize to real encode of string. Thus you must debug about UTF8 flag, before your script. How to solve it by returning to a past method, let's drag out page 402 of the old dusty Programming Perl, 3rd ed. again.
Information processing model beginning with perl3 or this software. +--------------------------------------------+ | Text strings as Binary strings | | Binary strings as Text strings | +--------------------------------------------+ | Not UTF8 Flagged | +--------------------------------------------+
Ideally, I'd like to achieve these five Goals:
Goal #1:
Old byte-oriented programs should not spontaneously break on the old byte-oriented data they used to work on.
It has already been achieved by UTF-2 designed for combining with old byte-oriented ASCII.
Goal #2:
Old byte-oriented programs should magically start working on the new character-oriented data when appropriate.
Still now, 1 octet is counted with 1 by embedded functions length, substr, index, rindex and pos that handle length and position of string. In this part, there is no change. The length of 1 character of 2 octet code is 2.
On the other hand, the regular expression in the script is added the multibyte anchoring processing with this software, instead of you.
figure of Goal #1 and Goal #2.
GOAL#1 GOAL#2 (a) (b) (c) (d) (e) +--------------+-------+-------+-------+-------+-------+ | data | Old | Old | New | Old | New | +--------------+-------+-------+-------+-------+-------+ | script | Old | Old | New | +--------------+-------+---------------+---------------+ | interpreter | Old | New | +--------------+-------+-------------------------------+ Old --- Old byte-oriented New --- New character-oriented
There is a combination from (a) to (e) in data, script and interpreter of old and new. Let's add the Encode module and this software did not exist at time of be written this document and JPerl did exist.
(a) (b) (c) (d) (e) JPerl Encode,Char::UTF2 +--------------+-------+-------+-------+-------+-------+ | data | Old | Old | New | Old | New | +--------------+-------+-------+-------+-------+-------+ | script | Old | Old | New | +--------------+-------+---------------+---------------+ | interpreter | Old | New | +--------------+-------+-------------------------------+ Old --- Old byte-oriented New --- New character-oriented
The reason why JPerl is very excellent is that it is at the position of (c). That is, it is not necessary to do a special description to the script to process new character-oriented string.
Contrasting is Encode module and describing "use Char::UTF2;" on this software, in this case, a new description is necessary.
Goal #3:
Programs should run just as fast in the new character-oriented mode as in the old byte-oriented mode.
It is impossible. Because the following time is necessary.
(1) Time of escape script for old byte-oriented perl.
(2) Time of processing regular expression by escaped script while multibyte anchoring.
Goal #4:
Perl should remain one language, rather than forking into a byte-oriented Perl and a character-oriented Perl.
JPerl remains one Perl language by forking to two interpreters. However, the Perl core team did not desire fork of the interpreter. As a result, Perl language forked contrary to goal #4.
A character-oriented perl is not necessary to make it specially, because a byte-oriented perl can already treat the binary data. This software is only an application program of byte-oriented Perl, a filter program.
And you will get support from the Perl community, when you solve the problem by the Perl script.
Goal #5:
JPerl users will be able to maintain JPerl by Perl.
May the JPerl be with you, always.
Back when Programming Perl, 3rd ed. was written, UTF8 flag was not born and Perl is designed to make the easy jobs easy. This software provide programming environment like at that time.
Some computer scientists (the reductionists, in particular) would like to deny it, but people have funny-shaped minds. Mental geography is not linear, and cannot be mapped onto a flat surface without severe distortion. But for the last score years or so, computer reductionists have been first bowing down at the Temple of Orthogonality, then rising up to preach their ideas of ascetic rectitude to any who would listen. Their fervent but misguided desire was simply to squash your mind to fit their mindset, to smush your patterns of thought into some sort of Hyperdimensional Flatland. It's a joyless existence, being smushed. --- Learning Perl on Win32 Systems If you think this is a big headache, you're right. No one likes this situation, but Perl does the best it can with the input and encodings it has to deal with. If only we could reset history and not make so many mistakes nest time. --- Learning Perl 6th Edition
PERL PUROGURAMINGU Larry Wall, Randal L.Schwartz, Yoshiyuki Kondo December 1997 ISBN 4-89052-384-7 http://www.context.co.jp/~cond/books/old-books.html Programming Perl, Second Edition By Larry Wall, Tom Christiansen, Randal L. Schwartz October 1996 Pages: 670 ISBN 10: 1-56592-149-6 | ISBN 13: 9781565921498 http://shop.oreilly.com/product/9781565921498.do Programming Perl, Third Edition By Larry Wall, Tom Christiansen, Jon Orwant Third Edition July 2000 Pages: 1104 ISBN 10: 0-596-00027-8 | ISBN 13: 9780596000271 http://shop.oreilly.com/product/9780596000271.do The Perl Language Reference Manual (for Perl version 5.12.1) by Larry Wall and others Paperback (6"x9"), 724 pages Retail Price: $39.95 (pound 29.95 in UK) ISBN-13: 978-1-906966-02-7 http://www.network-theory.co.uk/perl/language/ Perl Pocket Reference, 5th Edition By Johan Vromans Publisher: O'Reilly Media Released: July 2011 Pages: 102 http://shop.oreilly.com/product/0636920018476.do Programming Perl, 4th Edition By: Tom Christiansen, brian d foy, Larry Wall, Jon Orwant Publisher: O'Reilly Media Formats: Print, Ebook, Safari Books Online Released: March 2012 Pages: 1130 Print ISBN: 978-0-596-00492-7 | ISBN 10: 0-596-00492-3 Ebook ISBN: 978-1-4493-9890-3 | ISBN 10: 1-4493-9890-1 http://shop.oreilly.com/product/9780596004927.do Perl Cookbook, Second Edition By Tom Christiansen, Nathan Torkington Second Edition August 2003 Pages: 964 ISBN 10: 0-596-00313-7 | ISBN 13: 9780596003135 http://shop.oreilly.com/product/9780596003135.do Perl in a Nutshell, Second Edition By Stephen Spainhour, Ellen Siever, Nathan Patwardhan Second Edition June 2002 Pages: 760 Series: In a Nutshell ISBN 10: 0-596-00241-6 | ISBN 13: 9780596002411 http://shop.oreilly.com/product/9780596002411.do Learning Perl on Win32 Systems By Randal L. Schwartz, Erik Olson, Tom Christiansen August 1997 Pages: 306 ISBN 10: 1-56592-324-3 | ISBN 13: 9781565923249 http://shop.oreilly.com/product/9781565923249.do Learning Perl, Fifth Edition By Randal L. Schwartz, Tom Phoenix, brian d foy June 2008 Pages: 352 Print ISBN:978-0-596-52010-6 | ISBN 10: 0-596-52010-7 Ebook ISBN:978-0-596-10316-3 | ISBN 10: 0-596-10316-6 http://shop.oreilly.com/product/9780596520113.do Learning Perl, 6th Edition By Randal L. Schwartz, brian d foy, Tom Phoenix June 2011 Pages: 390 ISBN-10: 1449303587 | ISBN-13: 978-1449303587 http://shop.oreilly.com/product/0636920018452.do Perl RESOURCE KIT UNIX EDITION Futato, Irving, Jepson, Patwardhan, Siever ISBN 10: 1-56592-370-7 http://shop.oreilly.com/product/9781565923706.do MODAN Perl NYUMON By Daisuke Maki 2009/2/10 Pages: 344 ISBN 10: 4798119172 | ISBN 13: 978-4798119175 http://www.seshop.com/product/detail/10250/ Understanding Japanese Information Processing By Ken Lunde January 1900 Pages: 470 ISBN 10: 1-56592-043-0 | ISBN 13: 9781565920439 http://shop.oreilly.com/product/9781565920439.do CJKV Information Processing Chinese, Japanese, Korean & Vietnamese Computing By Ken Lunde First Edition January 1999 Pages: 1128 ISBN 10: 1-56592-224-7 | ISBN 13: 9781565922242 http://shop.oreilly.com/product/9781565922242.do Mastering Regular Expressions, Second Edition By Jeffrey E. F. Friedl Second Edition July 2002 Pages: 484 ISBN 10: 0-596-00289-0 | ISBN 13: 9780596002893 http://shop.oreilly.com/product/9780596002893.do Mastering Regular Expressions, Third Edition By Jeffrey E. F. Friedl Third Edition August 2006 Pages: 542 ISBN 10: 0-596-52812-4 | ISBN 13:9780596528126 http://shop.oreilly.com/product/9780596528126.do Regular Expressions Cookbook By Jan Goyvaerts, Steven Levithan May 2009 Pages: 512 ISBN 10:0-596-52068-9 | ISBN 13: 978-0-596-52068-7 http://shop.oreilly.com/product/9780596520694.do JIS KANJI JITEN Kouji Shibano Pages: 1456 ISBN 4-542-20129-5 http://www.webstore.jsa.or.jp/lib/lib.asp?fn=/manual/mnl01_12.htm UNIX MAGAZINE 1993 Aug Pages: 172 T1008901080816 ZASSHI 08901-8 http://ascii.asciimw.jp/books/books/detail/978-4-7561-5008-0.shtml MacPerl Power and Ease By Vicki Brown, Chris Nandor April 1998 Pages: 350 ISBN 10: 1881957322 | ISBN 13: 978-1881957324 http://www.amazon.com/Macperl-Power-Ease-Vicki-Brown/dp/1881957322 Other Tools http://search.cpan.org/dist/jacode/ http://search.cpan.org/dist/Char/ BackPAN http://backpan.perl.org/authors/id/I/IN/INA/
This software was made referring to software and the document that the following hackers or persons had made. I am thankful to all persons.
Rick Yamashita, Shift_JIS ttp://furukawablog.spaces.live.com/Blog/cns!1pmWgsL289nm7Shn7cS0jHzA!2225.entry (dead link) ttp://shino.tumblr.com/post/116166805/1981-us-jis (add 'h' at head) http://www.wdic.org/w/WDIC/%E3%82%B7%E3%83%95%E3%83%88JIS Larry Wall, Perl http://www.perl.org/ Kazumasa Utashiro, jcode.pl ftp://ftp.iij.ad.jp/pub/IIJ/dist/utashiro/perl/ http://log.utashiro.com/pub/2006/07/jkondo_a580.html Jeffrey E. F. Friedl, Mastering Regular Expressions http://regex.info/ SADAHIRO Tomoyuki, The right way of using Shift_JIS http://homepage1.nifty.com/nomenclator/perl/shiftjis.htm http://search.cpan.org/~sadahiro/ Yukihiro "Matz" Matsumoto, YAPC::Asia2006 Ruby on Perl(s) http://www.rubyist.net/~matz/slides/yapc2006/ jscripter, For jperl users http://homepage1.nifty.com/kazuf/jperl.html Bruce., Unicode in Perl http://www.rakunet.org/tsnet/TSabc/18/546.html Hiroaki Izumi, Perl5.8/Perl5.10 is not useful on the Windows. http://www.aritia.jp/hizumi/perl/perlwin.html TSUKAMOTO Makio, Perl memo/file path of Windows http://digit.que.ne.jp/work/wiki.cgi?Perl%E3%83%A1%E3%83%A2%2FWindows%E3%81%A7%E3%81%AE%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB%E3%83%91%E3%82%B9 chaichanPaPa, Matching Shift_JIS file name http://d.hatena.ne.jp/chaichanPaPa/20080802/1217660826 SUZUKI Norio, Jperl http://homepage2.nifty.com/kipp/perl/jperl/ WATANABE Hirofumi, Jperl http://www.cpan.org/src/5.0/jperl/ http://search.cpan.org/~watanabe/ ftp://ftp.oreilly.co.jp/pcjp98/watanabe/jperlconf.ppt Chuck Houpt, Michiko Nozu, MacJPerl http://habilis.net/macjperl/index.j.html Kenichi Ishigaki, Pod-PerldocJp, Welcome to modern Perl world http://search.cpan.org/dist/Pod-PerldocJp/ http://gihyo.jp/dev/serial/01/modern-perl/0031 http://gihyo.jp/dev/serial/01/modern-perl/0032 http://gihyo.jp/dev/serial/01/modern-perl/0033 Fuji, Goro (gfx), Perl Hackers Hub No.16 http://gihyo.jp/dev/serial/01/perl-hackers-hub/001602 Dan Kogai, Encode module http://search.cpan.org/dist/Encode/ http://www.archive.org/details/YAPCAsia2006TokyoPerl58andUnicodeMythsFactsandChanges (video) http://yapc.g.hatena.ne.jp/jkondo/ (audio) Juerd, Perl Unicode Advice http://juerd.nl/site.plp/perluniadvice daily dayflower, 2008-06-25 perluniadvice http://d.hatena.ne.jp/dayflower/20080625/1214374293 Jesse Vincent, Compatibility is a virtue http://www.nntp.perl.org/group/perl.perl5.porters/2010/05/msg159825.html Tokyo-pm archive http://mail.pm.org/pipermail/tokyo-pm/ http://mail.pm.org/pipermail/tokyo-pm/1999-September/001844.html http://mail.pm.org/pipermail/tokyo-pm/1999-September/001854.html ruby-list http://blade.nagaokaut.ac.jp/ruby/ruby-list/index.shtml http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-list/2440 http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-list/2446 http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-list/2569 http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-list/9427 http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-list/9431 http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-list/10500 http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-list/10501 http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-list/10502 http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-list/12385 http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-list/12392 http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-list/12393 http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-list/19156
To install Char::UTF2, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Char::UTF2
CPAN shell
perl -MCPAN -e shell install Char::UTF2
For more information on module installation, please visit the detailed CPAN module installation guide.