NAME
EUCJP - Source code filter to escape EUC-JP script
Install and Usage
There are two steps there:
You'll have to download EUCJP.pm and Eeucjp.pm and put it in your perl lib directory.
You'll need to write "use EUCJP;" at head of the script.
SYNOPSIS
use EUCJP;
use EUCJP ver.sion; --- require minimum version
use EUCJP ver.sion.0; --- expects version (match or die)
use EUCJP qw(ord reverse getc); --- demand enhanced feature of ord, reverse, and getc
use EUCJP ver.sion qw(ord reverse getc);
use EUCJP ver.sion.0 qw(ord reverse getc);
# "no EUCJP;" not supported
or
$ perl EUCJP.pm EUC-JP_script.pl > Escaped_script.pl.e
then
$ perl Escaped_script.pl.e
EUC-JP_script.pl --- script written in EUC-JP
Escaped_script.pl.e --- escaped script
subroutines:
EUCJP::ord(...);
EUCJP::reverse(...);
EUCJP::getc(...);
EUCJP::length(...);
EUCJP::substr(...);
EUCJP::index(...);
EUCJP::rindex(...);
EUCJP::eval(...);
functions:
<*>
glob(...);
CORE::chop(...);
CORE::ord(...);
CORE::reverse(...);
CORE::getc(...);
CORE::index(...);
CORE::rindex(...);
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(...);ABSTRACT
EUCJP software is "middleware" between perl interpreter and your Perl script written in EUC-JP.
Perl is optimized for problems which are about 90% working with text and about 10% everything else. Even if this "text" doesn't contain EUC-JP, Perl3 or later can treat EUC-JP as binary data.
By "use EUCJP;", it automatically interpret your script as EUC-JP. The various functions of perl including a regular expression can treat EUC-JP now. The function length treats length per byte. This software does not use UTF8 flag.
Yet Another Future Of
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/jperlNow, 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 EUC-JP 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
Remains One Language Handling Raw EUC-JP, Doesn't Use UTF8 flag like JPerl
Remains One Interpreter like Encode module
Code Set Independent like Ruby
Monolithic Script like cpanminus
There's more than one way to do it like Perl itself
I am excited about this software and Perl's future --- I hope you are too.
JRE: JPerl Runtime Environment
+---------------------------------------+
| JPerl Application Script | Your Script
+---------------------------------------+
| Source Code Filter, Runtime Routine | ex. EUCJP.pm, Eeucjp.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.
Basic Idea of Source Code Filter
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;
}
$status;
}
sub import {
filter_add(\&multibyte_filter);
}
1;I am glad that I could confirm my idea is not so wrong.
Command-line Wildcard Expansion on DOS-like Systems
The default command shells on DOS-like systems (COMMAND.COM or cmd.exe or Win95Cmd.exe) do not expand wildcard arguments supplied to programs. Instead, import of Eeucjp.pm works well.
in Eeucjp.pm
#
# @ARGV wildcard globbing
#
sub import {
if ($^O =~ /\A (?: MSWin32 | NetWare | symbian | dos ) \z/oxms) {
my @argv = ();
for (@ARGV) {
# has space
if (/\A (?:$q_char)*? [ ] /oxms) {
if (my @glob = Eeucjp::glob(qq{"$_"})) {
push @argv, @glob;
}
else {
push @argv, $_;
}
}
# has wildcard metachar
elsif (/\A (?:$q_char)*? [*?] /oxms) {
if (my @glob = Eeucjp::glob($_)) {
push @argv, @glob;
}
else {
push @argv, $_;
}
}
# no wildcard globbing
else {
push @argv, $_;
}
}
@ARGV = @argv;
}
}Software Composition
EUCJP.pm --- source code filter to escape EUC-JP
Eeucjp.pm --- run-time routines for EUCJP.pmUpper Compatibility by Escaping
This software adds the function by 'Escaping' it always, and nothing of the past is broken. Therefore, 'Possible job' never becomes 'Impossible job'. This approach is effective in the field where the retreat is never permitted. It means incompatible upgrade of Perl should be rewound.
Escaping Your Script (You do)
You need write 'use EUCJP;' in your script.
---------------------
You do
---------------------
use EUCJP;
---------------------Multiple-Octet Anchoring of Regular Expression (EUCJP software provides)
EUCJP software applies multiple-octet anchoring at beginning of regular expression.
--------------------------------------------------------------------------------
Before After
--------------------------------------------------------------------------------
m/regexp/ m/${Eeucjp::anchor}(?:regexp).../
--------------------------------------------------------------------------------Multiple-Octet Character Regular Expression (EUCJP software provides)
EUCJP software 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/...(?:${Eeucjp::eD}).../
m/...[[:^digit:]].../ m/...(?:${Eeucjp::not_digit}).../
--------------------------------------------------------------------------------Calling 'Eeucjp::ignorecase()' (EUCJP software provides)
EUCJP software applies calling 'Eeucjp::ignorecase()' instead of /i modifier.
--------------------------------------------------------------------------------
Before After
--------------------------------------------------------------------------------
m/...$var.../i m/...@{[Eeucjp::ignorecase($var)]}.../
--------------------------------------------------------------------------------Character-Oriented Regular Expression
Regular expression works as character-oriented that has no /b modifier.
--------------------------------------------------------------------------------
Before After
--------------------------------------------------------------------------------
/regexp/ /ditto$Eeucjp::matched/
m/regexp/ m/ditto$Eeucjp::matched/
?regexp? m?ditto$Eeucjp::matched?
m?regexp? m?ditto$Eeucjp::matched?
$_ =~ ($_ =~ m/ditto$Eeucjp::matched/) ?
s/regexp/replacement/ CORE::eval{ Eeucjp::s_matched(); local $^W=0; my $__r=qq/replacement/; $_="${1}$__r$'"; 1 } :
undef
$_ !~ ($_ !~ m/ditto$Eeucjp::matched/) ?
s/regexp/replacement/ 1 :
CORE::eval{ Eeucjp::s_matched(); local $^W=0; my $__r=qq/replacement/; $_="${1}$__r$'"; undef }
split(/regexp/) Eeucjp::split(qr/regexp/)
split(m/regexp/) Eeucjp::split(qr/regexp/)
split(qr/regexp/) Eeucjp::split(qr/regexp/)
qr/regexp/ qr/ditto$Eeucjp::matched/
--------------------------------------------------------------------------------Byte-Oriented Regular Expression
Regular expression works as byte-oriented that has /b modifier.
--------------------------------------------------------------------------------
Before After
--------------------------------------------------------------------------------
/regexp/b /(?:regexp)$Eeucjp::matched/
m/regexp/b m/(?:regexp)$Eeucjp::matched/
?regexp?b m?regexp$Eeucjp::matched?
m?regexp?b m?regexp$Eeucjp::matched?
$_ =~ ($_ =~ m/(\G[\x00-\xFF]*?)(?:regexp)$Eeucjp::matched/) ?
s/regexp/replacement/b CORE::eval{ Eeucjp::s_matched(); local $^W=0; my $__r=qq/replacement/; $_="${1}$__r$'"; 1 } :
undef
$_ !~ ($_ !~ m/(\G[\x00-\xFF]*?)(?:regexp)$Eeucjp::matched/) ?
s/regexp/replacement/b 1 :
CORE::eval{ Eeucjp::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)$Eeucjp::matched/
--------------------------------------------------------------------------------Escaping Character Classes (Eeucjp.pm provides)
The character classes are redefined as follows to backward compatibility.
---------------------------------------------------------------
Before After
---------------------------------------------------------------
. ${Eeucjp::dot}
${Eeucjp::dot_s} (/s modifier)
\d [0-9] (universally)
\s \s
\w [0-9A-Z_a-z] (universally)
\D ${Eeucjp::eD}
\S ${Eeucjp::eS}
\W ${Eeucjp::eW}
\h [\x09\x20]
\v [\x0A\x0B\x0C\x0D]
\H ${Eeucjp::eH}
\V ${Eeucjp::eV}
\C [\x00-\xFF]
\X X (so, just 'X')
\R ${Eeucjp::eR}
\N ${Eeucjp::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:] [\s\x0B]
[: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:] ${Eeucjp::not_alnum}
[:^alpha:] ${Eeucjp::not_alpha}
[:^ascii:] ${Eeucjp::not_ascii}
[:^blank:] ${Eeucjp::not_blank}
[:^cntrl:] ${Eeucjp::not_cntrl}
[:^digit:] ${Eeucjp::not_digit}
[:^graph:] ${Eeucjp::not_graph}
[:^lower:] ${Eeucjp::not_lower}
${Eeucjp::not_lower_i} (/i modifier)
[:^print:] ${Eeucjp::not_print}
[:^punct:] ${Eeucjp::not_punct}
[:^space:] ${Eeucjp::not_space}
[:^upper:] ${Eeucjp::not_upper}
${Eeucjp::not_upper_i} (/i modifier)
[:^word:] ${Eeucjp::not_word}
[:^xdigit:] ${Eeucjp::not_xdigit}
---------------------------------------------------------------\b and \B are redefined as follows to backward compatibility.
---------------------------------------------------------------
Before After
---------------------------------------------------------------
\b ${Eeucjp::eb}
\B ${Eeucjp::eB}
---------------------------------------------------------------Definitions in Eeucjp.pm.
---------------------------------------------------------------------------------------------------------------------------------------------------------
After Definition
---------------------------------------------------------------------------------------------------------------------------------------------------------
${Eeucjp::anchor} qr{\G(?>[^\x8E\x8F\xA1-\xFE]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])*?}
for over 32766 octets string on ActivePerl5.6 and Perl5.10 or later
qr{\G(?(?=.{0,32766}\z)\G(?>[^\x8E\x8F\xA1-\xFE]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])*?|(?(?=[\x00-\x8D\x90-\xA0\xFF]+\z).*?|(?:.*?[^\x8E\x8F\xA1-\xFE](?>[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\xA1-\xFE])*?)))}oxms
for over 32766 octets string on ActivePerl5.6 and Perl5.10 or later
qr{\G(?(?=.{0,32766}\z)\G(?>[^\x8E\x8F\xA1-\xFE]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])*?|(?(?=[$sbcs]+\z).*?|(?:.*?[$sbcs](?:[^$sbcs][^$sbcs])*?)))}oxms
${Eeucjp::dot} qr{(?>[^\x8E\x8F\xA1-\xFE\x0A]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::dot_s} qr{(?>[^\x8E\x8F\xA1-\xFE]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::eD} qr{(?>[^\x8E\x8F\xA1-\xFE0-9]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::eS} qr{(?>[^\x8E\x8F\xA1-\xFE\s]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::eW} qr{(?>[^\x8E\x8F\xA1-\xFE0-9A-Z_a-z]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::eH} qr{(?>[^\x8E\x8F\xA1-\xFE\x09\x20]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::eV} qr{(?>[^\x8E\x8F\xA1-\xFE\x0A\x0B\x0C\x0D]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::eR} qr{(?>\x0D\x0A|[\x0A\x0D])};
${Eeucjp::eN} qr{(?>[^\x8E\x8F\xA1-\xFE\x0A]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::not_alnum} qr{(?>[^\x8E\x8F\xA1-\xFE\x30-\x39\x41-\x5A\x61-\x7A]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::not_alpha} qr{(?>[^\x8E\x8F\xA1-\xFE\x41-\x5A\x61-\x7A]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::not_ascii} qr{(?>[^\x8E\x8F\xA1-\xFE\x00-\x7F]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::not_blank} qr{(?>[^\x8E\x8F\xA1-\xFE\x09\x20]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::not_cntrl} qr{(?>[^\x8E\x8F\xA1-\xFE\x00-\x1F\x7F]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::not_digit} qr{(?>[^\x8E\x8F\xA1-\xFE\x30-\x39]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::not_graph} qr{(?>[^\x8E\x8F\xA1-\xFE\x21-\x7F]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::not_lower} qr{(?>[^\x8E\x8F\xA1-\xFE\x61-\x7A]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::not_lower_i} qr{(?>[^\x8E\x8F\xA1-\xFE\x41-\x5A\x61-\x7A]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])}; # Perl 5.16 compatible
# ${Eeucjp::not_lower_i} qr{(?>[^\x8E\x8F\xA1-\xFE]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])}; # older Perl compatible
${Eeucjp::not_print} qr{(?>[^\x8E\x8F\xA1-\xFE\x20-\x7F]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::not_punct} qr{(?>[^\x8E\x8F\xA1-\xFE\x21-\x2F\x3A-\x3F\x40\x5B-\x5F\x60\x7B-\x7E]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::not_space} qr{(?>[^\x8E\x8F\xA1-\xFE\s\x0B]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::not_upper} qr{(?>[^\x8E\x8F\xA1-\xFE\x41-\x5A]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::not_upper_i} qr{(?>[^\x8E\x8F\xA1-\xFE\x41-\x5A\x61-\x7A]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])}; # Perl 5.16 compatible
# ${Eeucjp::not_upper_i} qr{(?>[^\x8E\x8F\xA1-\xFE]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])}; # older Perl compatible
${Eeucjp::not_word} qr{(?>[^\x8E\x8F\xA1-\xFE\x30-\x39\x41-\x5A\x5F\x61-\x7A]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
${Eeucjp::not_xdigit} qr{(?>[^\x8E\x8F\xA1-\xFE\x30-\x39\x41-\x46\x61-\x66]|[\x8E\xA1-\xFE][\xA1-\xFE]|\x8F[\xA1-\xFE][\x00-\xFF])};
# This solution is not perfect. I beg better solution from you who are reading this.
${Eeucjp::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))};
${Eeucjp::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]))};
---------------------------------------------------------------------------------------------------------------------------------------------------------Un-Escaping \ of \b{}, \B{}, \N{}, \p{}, \P{}, and \X (EUCJP software provides)
EUCJP software removes '\' at head of alphanumeric regexp metasymbols \b{}, \B{}, \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
------------------------------------
\b{...} b\{...}
\B{...} B\{...}
\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
------------------------------------Escaping Built-in Functions (EUCJP software provides)
Insert 'Eeucjp::' at head of function name. Eeucjp.pm provides your script Eeucjp::* subroutines.
-------------------------------------------
Before After Works as
-------------------------------------------
length length Byte
substr substr Byte
pos pos Byte
split Eeucjp::split Character
tr/// Eeucjp::tr Character
tr///b tr/// Byte
tr///B tr/// Byte
y/// Eeucjp::tr Character
y///b tr/// Byte
y///B tr/// Byte
chop Eeucjp::chop Character
index Eeucjp::index Character
rindex Eeucjp::rindex Character
lc Eeucjp::lc Character
lcfirst Eeucjp::lcfirst Character
uc Eeucjp::uc Character
ucfirst Eeucjp::ucfirst Character
fc Eeucjp::fc Character
chr Eeucjp::chr Character
glob Eeucjp::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'; }
------------------------------------------------------------------------------------------------------------------------Escaping Function Name (You do)
You need write 'EUCJP::' at head of function name when you want character- oriented subroutine. See 'Character-Oriented Subroutines'.
--------------------------------------------------------
Function Character-Oriented Description
--------------------------------------------------------
ord EUCJP::ord
reverse EUCJP::reverse
getc EUCJP::getc
length EUCJP::length
substr EUCJP::substr
index EUCJP::index See 'About Indexes'
rindex EUCJP::rindex See 'About Rindexes'
eval EUCJP::eval
--------------------------------------------------------
About Indexes
-------------------------------------------------------------------------
Function Works as Returns as Description
-------------------------------------------------------------------------
index Character Byte JPerl semantics (most useful)
(same as Eeucjp::index)
EUCJP::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 Eeucjp::rindex)
EUCJP::rindex Character Character Character-oriented semantics
CORE::rindex Byte Byte Byte-oriented semantics
(nothing) Byte Character (most useless)
-------------------------------------------------------------------------Character-Oriented Subsroutines
Ordinal Value of Character
$ord = EUCJP::ord($string); This subroutine returns the numeric value (ASCII or EUC-JP 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 EUCJP qw(ord);", ord of your script will be rewritten in EUCJP::ord. EUCJP::ord is not compatible with ord of JPerl.Reverse List or String
@reverse = EUCJP::reverse(@list); $reverse = EUCJP::reverse(@list); In list context, this subroutine returns a list value consisting of the elements of @list in the opposite order. In scalar context, the subroutine concatenates all the elements of @list and then returns the reverse of that resulting string, character by character. If you import reverse "use EUCJP qw(reverse);", reverse of your script will be rewritten in EUCJP::reverse. EUCJP::reverse is not compatible with reverse of JPerl. Even if you do not know this subroutine, there is no problem. This subroutine can be created with $rev = join('', reverse(split(//, $jstring))); as before. See: P.558 JPerl (Japanese Perl) Appendix C Supplement the Japanese version ISBN 4-89052-384-7 PERL PUROGURAMINGUReturns Next Character
$getc = EUCJP::getc(FILEHANDLE); $getc = EUCJP::getc($filehandle); $getc = EUCJP::getc; This subroutine returns the next character from the input file attached to FILEHANDLE. It returns undef at end-of-file, or if an I/O error was encountered. If FILEHANDLE is omitted, the subroutine reads from STDIN. This subroutine is somewhat slow, but it's occasionally useful for single-character input from the keyboard -- provided you manage to get your keyboard input unbuffered. This subroutine requests unbuffered input from the standard I/O library. Unfortunately, the standard I/O library is not so standard as to provide a portable way to tell the underlying operating system to supply unbuffered keyboard input to the standard I/O system. To do that, you have to be slightly more clever, and in an operating-system-dependent fashion. Under Unix you might say this: if ($BSD_STYLE) { system "stty cbreak </dev/tty >/dev/tty 2>&1"; } else { system "stty", "-icanon", "eol", "\001"; } $key = EUCJP::getc; if ($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 EUCJP qw(getc);", getc of your script will be rewritten in EUCJP::getc. EUCJP::getc is not compatible with getc of JPerl.Length by EUC-JP Character
$length = EUCJP::length($string); $length = EUCJP::length(); This subroutine returns the length in characters (programmer-visible characters) of the scalar value $string. If $string is omitted, it returns the EUCJP::length of $_. Do not try to use EUCJP::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 subroutine, there is no problem. This subroutine can be created with $len = split(//, $jstring); as before. See: P.558 JPerl (Japanese Perl) Appendix C Supplement the Japanese version ISBN 4-89052-384-7 PERL PUROGURAMINGUSubstr by EUC-JP Character
$substr = EUCJP::substr($string,$offset,$length,$replacement); $substr = EUCJP::substr($string,$offset,$length); $substr = EUCJP::substr($string,$offset); This subroutine 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. First character is at offset zero. If $offset is negative, starts that far back from the end of the string. If $length is omitted, returns everything through the end of the string. If $length is negative, leaves 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. my $s = "The black cat climbed the green tree"; my $color = EUCJP::substr $s, 4, 5; # black my $middle = EUCJP::substr $s, 4, -11; # black cat climbed the my $end = EUCJP::substr $s, 14; # climbed the green tree my $tail = EUCJP::substr $s, -4; # tree my $z = EUCJP::substr $s, -4, 2; # tr If Perl version 5.14 or later, you can use the EUCJP::substr() subroutine as an lvalue. In its case $string must itself be an lvalue. If you assign something shorter than $length, the string will shrink, and if you assign something longer than $length, the string will grow to accommodate it. To keep the string the same length, you may need to pad or chop your value using sprintf. If $offset and $length specify a substring that is partly outside the string, only the part within the string is returned. If the substring is beyond either end of the string, EUCJP::substr() returns the undefined value and produces a warning. When used as an lvalue, specifying a substring that is entirely outside the string raises an exception. Here's an example showing the behavior for boundary cases: my $name = 'fred'; EUCJP::substr($name, 4) = 'dy'; # $name is now 'freddy' my $null = EUCJP::substr $name, 6, 2; # returns "" (no warning) my $oops = EUCJP::substr $name, 7; # returns undef, with warning EUCJP::substr($name, 7) = 'gap'; # raises an exception An alternative to using EUCJP::substr() as an lvalue is to specify the replacement string as the 4th argument. This allows you to replace parts of the $string and return what was there before in one operation, just as you can with splice(). my $s = "The black cat climbed the green tree"; my $z = EUCJP::substr $s, 14, 7, "jumped from"; # climbed # $s is now "The black cat jumped from the green tree" Note that the lvalue returned by the three-argument version of EUCJP::substr() acts as a 'magic bullet'; each time it is assigned to, it remembers which part of the original string is being modified; for example: $x = '1234'; for (EUCJP::substr($x,1,2)) { $_ = 'a'; print $x,"\n"; # prints 1a4 $_ = 'xyz'; print $x,"\n"; # prints 1xyz4 $x = '56789'; $_ = 'pq'; print $x,"\n"; # prints 5pq9 } With negative offsets, it remembers its position from the end of the string when the target string is modified: $x = '1234'; for (EUCJP::substr($x, -3, 2)) { $_ = 'a'; print $x,"\n"; # prints 1a4, as above $x = 'abcdefg'; print $_,"\n"; # prints f } Prior to Perl version 5.10, the result of using an lvalue multiple times was unspecified. Prior to 5.16, the result with negative offsets was unspecified.Index by EUC-JP Character
$index = EUCJP::index($string,$substring,$offset); $index = EUCJP::index($string,$substring); This subroutine 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 subroutine returns one less than the base, ordinarily -1. To work your way through a string, you might say: $pos = -1; while (($pos = EUCJP::index($string, $lookfor, $pos)) > -1) { print "Found at $pos\n"; $pos++; }Rindex by EUC-JP Character
$rindex = EUCJP::rindex($string,$substring,$offset); $rindex = EUCJP::rindex($string,$substring); This subroutine works just like EUCJP::index except that it returns the character position of the last occurrence of $substring in $string (a reverse EUCJP::index). The subroutine 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: $pos = EUCJP::length($string); while (($pos = EUCJP::rindex($string, $lookfor, $pos)) >= 0) { print "Found at $pos\n"; $pos--; }Eval EUC-JP Script
$eval = EUCJP::eval { block }; $eval = EUCJP::eval $expr; $eval = EUCJP::eval; The EUCJP::eval keyword serves two distinct but related purposes in JPerl. These purposes are represented by two forms of syntax, EUCJP::eval { block } and EUCJP::eval $expr. The first form traps runtime exceptions (errors) that would otherwise prove fatal, similar to the "try block" construct in C++ or Java. The second form compiles and executes little bits of code on the fly at runtime, and also (conveniently) traps any exceptions just like the first form. But the second form runs much slower than the first form, since it must parse the string every time. On the other hand, it is also more general. Whichever form you use, EUCJP::eval is the preferred way to do all exception handling in JPerl. For either form of EUCJP::eval, the value returned from an EUCJP::eval is the value of the last expression evaluated, just as with subroutines. Similarly, you may use the return operator to return a value from the middle of the eval. The expression providing the return value is evaluated in void, scalar, or list context, depending on the context of the EUCJP::eval itself. See wantarray for more on how the evaluation context can be determined. If there is a trappable error (including any produced by the die operator), EUCJP::eval returns undef and puts the error message (or object) in $@. If there is no error, $@ is guaranteed to be set to the null string, so you can test it reliably afterward for errors. A simple Boolean test suffices: EUCJP::eval { ... }; # trap runtime errors if ($@) { ... } # handle error (Prior to Perl 5.16, a bug caused undef to be returned in list context for syntax errors, but not for runtime errors.) The EUCJP::eval { block } form is syntax checked and compiled at compile time, so it is just as efficient at runtime as any other block. (People familiar with the slow EUCJP::eval $expr form are occasionally confused on this issue.) Because the { block } is compiled when the surrounding code is, this form of EUCJP::eval cannot trap syntax errors. The EUCJP::eval $expr form can trap syntax errors because it parses the code at runtime. (If the parse is unsuccessful, it places the parse error in $@, as usual.) If $expr is omitted, evaluates $_ . Otherwise, it executes the value of $expr as though it were a little JPerl script. The code is executed in the context of the current of the current JPerl script, which means that it can see any enclosing lexicals from a surrounding scope, and that any nonlocal variable settings remain in effect after the EUCJP::eval is complete, as do any subroutine or format definitions. The code of the EUCJP::eval is treated as a block, so any locally scoped variables declared within the EUCJP::eval last only until the EUCJP::eval is done. (See my and local.) As with any code in a block, a final semicolon is not required. EUCJP::eval will be escaped as follows: ------------------------------------------------- Before After ------------------------------------------------- EUCJP::eval { block } eval { block } EUCJP::eval $expr eval EUCJP::escape $expr EUCJP::eval eval EUCJP::escape ------------------------------------------------- To tell the truth, the subroutine EUCJP::eval does not exist. If it exists, you will troubled, when EUCJP::eval has a parameter that is single quoted string included my variables. EUCJP::escape is a subroutine that makes Perl script from JPerl script. Here is a simple JPerl shell. It prompts the user to enter a string of arbitrary JPerl code, compiles and executes that string, and prints whatever error occurred: #!/usr/bin/perl # jperlshell.pl - simple JPerl shell use EUCJP; print "\nEnter some JPerl code: "; while (<STDIN>) { EUCJP::eval; print $@; print "\nEnter some more JPerl code: "; } Here is a rename.pl script to do a mass renaming of files using a JPerl expression: #!/usr/bin/perl # rename.pl - change filenames use EUCJP; $op = shift; for (@ARGV) { $was = $_; EUCJP::eval $op; die if $@; # next line calls the built-in function, not # the script by the same name if ($was ne $_) { print STDERR "rename $was --> $_\n"; rename($was,$_); } } You'd use that script like this: C:\WINDOWS> perl rename.pl 's/\.orig$//' *.orig C:\WINDOWS> perl rename.pl 'y/A-Z/a-z/ unless /^Make/' * C:\WINDOWS> perl rename.pl '$_ .= ".bad"' *.f Since EUCJP::eval traps errors that would otherwise prove fatal, it is useful for determining whether particular features (such as fork or symlink) are implemented. Because EUCJP::eval { block } is syntax checked at compile time, any syntax error is reported earlier. Therefore, if your code is invariant and both EUCJP::eval $expr and EUCJP::eval { block } will suit your purposes equally well, the { block } form is preferred. For example: # make divide-by-zero nonfatal EUCJP::eval { $answer = $a / $b; }; warn $@ if $@; # same thing, but less efficient if run multiple times EUCJP::eval '$answer = $a / $b'; warn $@ if $@; # a compile-time syntax error (not trapped) EUCJP::eval { $answer = }; # WRONG # a runtime syntax error EUCJP::eval '$answer ='; # sets $@ Here, the code in the { block } has to be valid JPerl code to make it past the compile phase. The code in the $expr doesn't get examined until runtime, so it doesn't cause an error until runtime. Using the EUCJP::eval { block } form as an exception trap in libraries does have some issues. Due to the current arguably broken state of __DIE__ hooks, you may wish not to trigger any __DIE__ hooks that user code may have installed. You can use the local $SIG{__DIE__} construct for this purpose, as this example shows: # a private exception trap for divide-by-zero EUCJP::eval { local $SIG{'__DIE__'}; $answer = $a / $b; }; warn $@ if $@; This is especially significant, given that __DIE__ hooks can call die again, which has the effect of changing their error messages: # __DIE__ hooks may modify error messages { local $SIG{'__DIE__'} = sub { (my $x = $_[0]) =~ s/foo/bar/g; die $x }; EUCJP::eval { die "foo lives here" }; print $@ if $@; # prints "bar lives here" } Because this promotes action at a distance, this counterintuitive behavior may be fixed in a future release. With an EUCJP::eval, you should be especially careful to remember what's being looked at when: EUCJP::eval $x; # CASE 1 EUCJP::eval "$x"; # CASE 2 EUCJP::eval '$x'; # CASE 3 EUCJP::eval { $x }; # CASE 4 EUCJP::eval "\$$x++"; # CASE 5 $$x++; # CASE 6 CASEs 1 and 2 above behave identically: they run the code contained in the variable $x. (Although CASE 2 has misleading double quotes making the reader wonder what else might be happening (nothing is).) CASEs 3 and 4 likewise behave in the same way: they run the code '$x' , which does nothing but return the value of $x. (CASE 4 is preferred for purely visual reasons, but it also has the advantage of compiling at compile-time instead of at run-time.) CASE 5 is a place where normally you would like to use double quotes, except that in this particular situation, you can just use symbolic references instead, as in CASE 6. Before Perl 5.14, the assignment to $@ occurred before restoration of localized variables, which means that for your code to run on older versions, a temporary is required if you want to mask some but not all errors: # alter $@ on nefarious repugnancy only { my $e; { local $@; # protect existing $@ EUCJP::eval { test_repugnancy() }; # $@ =~ /nefarious/ and die $@; # Perl 5.14 and higher only $@ =~ /nefarious/ and $e = $@; } die $e if defined $e } The block of EUCJP::eval { block } does not count as a loop, so the loop control statements next, last, or redo cannot be used to leave or restart the block.Filename Globbing
@glob = glob($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 Eeucjp::glob() subroutine. See Eeucjp::glob of Eeucjp.pm for details.
Byte-Oriented Functions
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 EUCJP 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 EUCJP 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--; }
Yada Yada Operator (EUCJP software provides)
The yada yada operator (noted ...) is a placeholder for code. Perl parses it
without error, but when you try to execute a yada yada, it throws an exception
with the text Unimplemented:
sub unimplemented { ... }
eval { unimplemented() };
if ( $@ eq 'Unimplemented' ) {
print "I found the yada yada!\n";
}
You can only use the yada yada to stand in for a complete statement. These
examples of the yada yada work:
{ ... }
sub foo { ... }
...;
eval { ... };
sub foo {
my( $self ) = shift;
...;
}
do { my $n; ...; print 'Hurrah!' };
The yada yada cannot stand in for an expression that is part of a larger statement
since the ... is also the three-dot version of the range operator
(see "Range Operators"). These examples of the yada yada are still syntax errors:
print ...;
open my($fh), '>', '/dev/passwd' or ...;
if ( $condition && ... ) { print "Hello\n" };
There are some cases where Perl can't immediately tell the difference between an
expression and a statement. For instance, the syntax for a block and an anonymous
hash reference constructor look the same unless there's something in the braces that
give Perl a hint. The yada yada is a syntax error if Perl doesn't guess that the
{ ... } is a block. In that case, it doesn't think the ... is the yada yada because
it's expecting an expression instead of a statement:
my @transformed = map { ... } @input; # syntax error
You can use a ; inside your block to denote that the { ... } is a block and not a
hash reference constructor. Now the yada yada works:
my @transformed = map {; ... } @input; # ; disambiguates
my @transformed = map { ...; } @input; # ; disambiguatesUn-Escaping bytes::* Subroutines (EUCJP software provides)
EUCJP software removes 'bytes::' at head of subroutine 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
---------------------------------------Ignore Pragmas and Modules
-----------------------------------------------------------
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 Eeucjp.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
$flag = utf8::valid(STRING); Returns true always.Dummy bytes::chr
This subroutine is same as chr.Dummy bytes::index
This subroutine is same as index.Dummy bytes::length
This subroutine is same as length.Dummy bytes::ord
This subroutine is same as ord.Dummy bytes::rindex
This subroutine is same as rindex.Dummy bytes::substr
This subroutine is same as substr.
Environment Variable
This software uses the flock function for exclusive control. The execution of the
program is blocked until it becomes possible to read or write the file.
You can have it not block in the flock function by defining environment variable
CHAR_NONBLOCK.
Example:
SET CHAR_NONBLOCK=1
(The value '1' doesn't have the meaning)BUGS, LIMITATIONS, and COMPATIBILITY
I have tested and verified this software using the best of my ability. However, a software containing much regular expression is bound to contain some bugs. Thus, if you happen to find a bug that's in EUCJP software and not your own program, you can try to reduce it to a minimal test case and then report it to the following author's address. If you have an idea that could make this a more useful tool, please let everyone share it.
(dummy item to avoid Test::Pod error)
format
Function "format" can't handle multiple-octet code same as original Perl.
cloister of regular expression
The cloister (?s) and (?i) of a regular expression will not be implemented for the time being. Cloister (?s) can be substituted with the .(dot) and \N on /s modifier. Cloister (?i) can be substituted with \F...\E.
EUCJP::substr as Lvalue
If Perl version is older than 5.14, EUCJP::substr differs from CORE::substr, and cannot be used as a lvalue. To change part of a string, you need use the optional fourth argument which is the replacement string.
EUCJP::substr($string, 13, 4, "JPerl");
Special Variables $` and $& need /( Capture All )/
Because $` and $& use $1. ------------------------------------------------------------------------------------------- Before After Works as ------------------------------------------------------------------------------------------- $` Eeucjp::PREMATCH() CORE::substr($&,0,CORE::length($&)-CORE::length($1)) ${`} Eeucjp::PREMATCH() CORE::substr($&,0,CORE::length($&)-CORE::length($1)) $PREMATCH Eeucjp::PREMATCH() CORE::substr($&,0,CORE::length($&)-CORE::length($1)) ${^PREMATCH} Eeucjp::PREMATCH() CORE::substr($&,0,CORE::length($&)-CORE::length($1)) $& Eeucjp::MATCH() $1 ${&} Eeucjp::MATCH() $1 $MATCH Eeucjp::MATCH() $1 ${^MATCH} Eeucjp::MATCH() $1 $' $' $' ${'} ${'} $' $POSTMATCH Eeucjp::POSTMATCH() $' ${^POSTMATCH} Eeucjp::POSTMATCH() $' -------------------------------------------------------------------------------------------Limitation of Regular Expression
This software has limitation from \G in multibyte anchoring. Only the following Perl can treat the character string which exceeds 32766 octets with a regular expression.
perl 5.6 or later --- ActivePerl on MSWin32
perl 5.10.1 or later --- other Perl
see also, In 5.10.0, the * quantifier in patterns was sometimes treated as {0,32767} http://perldoc.perl.org/perl5101delta.html [perl #116379] \G can't treat over 32767 octet http://www.nntp.perl.org/group/perl.perl5.porters/2013/01/msg197320.html perlre - Perl regular expressions http://perldoc.perl.org/perlre.html perlre length limit http://stackoverflow.com/questions/4592467/perlre-length-limit Japanese Document EUCJP/JA.pmEmpty 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 as literal string and literal of regexp in one Perl script. Therefore, modifier /a, /d, /l, and /u are not supported. \d means [0-9] universally.
Named Character
A named character, such \N{GREEK SMALL LETTER EPSILON}, \N{greek:epsilon}, or \N{epsilon} is not supported.
Unicode Properties (aka Character Properties) of Regular Expression
Unicode properties (aka character properties) of regexp are not available. Also (?[]) in regexp of Perl 5.18 is not available. There is no plans to currently support these.
Delimiter of String and Regexp
qq//, q//, qw//, qx//, qr//, m//, s///, tr///, and y/// can't use a wide character as the delimiter.
\b{...} Boundaries in Regular Expressions
Following \b{...} available starting in v5.22 are not supported.
\b{gcb} or \b{g} Unicode "Grapheme Cluster Boundary" \b{sb} Unicode "Sentence Boundary" \b{wb} Unicode "Word Boundary" \B{gcb} or \B{g} Unicode "Grapheme Cluster Boundary" doesn't match \B{sb} Unicode "Sentence Boundary" doesn't match \B{wb} Unicode "Word Boundary" doesn't match
AUTHOR
INABA Hitoshi <ina@cpan.org>
This project was originated by INABA Hitoshi.
LICENSE AND COPYRIGHT
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.
My Goal
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.
/* You are not expected to understand this */
Information processing model beginning with perl 5.8
+----------------------+---------------------+
| Text strings | |
+----------+-----------| Binary strings |
| UTF-8 | Latin-1 | |
+----------+-----------+---------------------+
| UTF8 | Not UTF8 |
| Flagged | Flagged |
+--------------------------------------------+
http://perl-users.jp/articles/advent-calendar/2010/casual/4
Confusion of Perl string model is made from double meanings of
"Binary string."
Meanings of "Binary string"
1. Non-Text string
2. Digital octet string
Let's draw again using those term.
+----------------------+---------------------+
| Text strings | |
+----------+-----------| Non-Text strings |
| UTF-8 | Latin-1 | |
+----------+-----------+---------------------+
| UTF8 | Not UTF8 |
| Flagged | Flagged |
+--------------------------------------------+
| Digital octet string |
+--------------------------------------------+There are people who don't agree to change in the character string processing model of Perl 5.8. It is impossible to get to agree it to majority of Perl user who hardly ever use Perl. How to solve it by returning to a original 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
of UNIX/C-ism.
+--------------------------------------------+
| Text string as Digital octet string |
| Digital octet string as Text string |
+--------------------------------------------+
| Not UTF8 Flagged, No Mojibake |
+--------------------------------------------+
In UNIX Everything is a File
- In UNIX everything is a stream of bytes
- In UNIX the filesystem is used as a universal name space
Native Encoding Scripting
- native encoding of file contents
- native encoding of file name on filesystem
- native encoding of command line
- native encoding of environment variable
- native encoding of API
- native encoding of network packet
- native encoding of databaseIdeally, 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.
This goal has been achieved by that this software is additional code for perl like utf8 pragma. Perl should work same as past Perl if added nothing.
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 built-in 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-orientedThere 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,japerl Encode,EUCJP +--------------+-------+-------+-------+-------+-------+ | data | Old | Old | New | Old | New | +--------------+-------+-------+-------+-------+-------+ | script | Old | Old | New | +--------------+-------+---------------+---------------+ | interpreter | Old | New | +--------------+-------+-------------------------------+ Old --- Old byte-oriented New --- New character-orientedThe 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. (May the japerl take over JPerl!)
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.
Someday, I want to ask Larry Wall about this goal in the elevator.
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.
EUCJP software remains one language and one interpreter.
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 provides programming environment like at that time.
Perl's motto
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 next time.
--- Learning Perl 6th Edition
The most important thing for most people to know about handling
Unicode data in Perl, however, is that if you don't ever use any Uni-
code data -- if none of your files are marked as UTF-8 and you don't
use UTF-8 locales -- then you can happily pretend that you're back in
Perl 5.005_03 land; the Unicode features will in no way interfere with
your code unless you're explicitly using them. Sometimes the twin
goals of embracing Unicode but not disturbing old-style byte-oriented
scripts has led to compromise and confusion, but it's the Perl way to
silently do the right thing, which is what Perl ends up doing.
--- Advanced Perl Programming, 2nd EditionSEE ALSO
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
By Tom Christiansen, Nathan Torkington
August 1998
Pages: 800
ISBN 10: 1-56592-243-3 | ISBN 13: 978-1-56592-243-3
http://shop.oreilly.com/product/9781565922433.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
Advanced Perl Programming, 2nd Edition
By Simon Cozens
June 2005
Pages: 300
ISBN-10: 0-596-00456-7 | ISBN-13: 978-0-596-00456-9
http://shop.oreilly.com/product/9780596004569.do
Perl RESOURCE KIT UNIX EDITION
Futato, Irving, Jepson, Patwardhan, Siever
ISBN 10: 1-56592-370-7
http://shop.oreilly.com/product/9781565923706.do
Perl Resource Kit -- Win32 Edition
Erik Olson, Brian Jepson, David Futato, Dick Hardt
ISBN 10:1-56592-409-6
http://shop.oreilly.com/product/9781565924093.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
Regular Expressions Cookbook, 2nd Edition
By Jan Goyvaerts, Steven Levithan
Final Release Date: August 2012
Pages: 612
ISBN: 978-1-4493-1943-4 | ISBN 10:1-4493-1943-2
JIS KANJI JITEN
By 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
LINUX NIHONGO KANKYO
By YAMAGATA Hiroo, Stephen J. Turnbull, Craig Oda, Robert J. Bickel
June, 2000
Pages: 376
ISBN 4-87311-016-5
http://www.oreilly.co.jp/books/4873110165/
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
Windows NT Shell Scripting
By Timothy Hill
April 27, 1998
Pages: 400
ISBN 10: 1578700477 | ISBN 13: 9781578700479
http://search.barnesandnoble.com/Windows-NT-Shell-Scripting/Timothy-Hill/e/9781578700479/
Windows(R) Command-Line Administrators Pocket Consultant, 2nd Edition
By William R. Stanek
February 2009
Pages: 594
ISBN 10: 0-7356-2262-0 | ISBN 13: 978-0-7356-2262-3
http://shop.oreilly.com/product/9780735622623.do
Kaoru Maeda, Perl's history Perl 1,2,3,4
http://www.slideshare.net/KaoruMaeda/perl-perl-1234
nurse, What is "string"
http://d.hatena.ne.jp/nurse/20141107#1415355181
NISHIO Hirokazu, What's meant "string as a sequence of characters"?
http://d.hatena.ne.jp/nishiohirokazu/20141107/1415286729
nurse, History of Japanese EUC 22:00
http://d.hatena.ne.jp/nurse/20090308/1236517235
Mike Whitaker, Perl And Unicode
http://www.slideshare.net/Penfold/perl-and-unicode
Ricardo Signes, Perl 5.14 for Pragmatists
http://www.slideshare.net/rjbs/perl-514-8809465
Ricardo Signes, What's New in Perl? v5.10 - v5.16 #'
http://www.slideshare.net/rjbs/whats-new-in-perl-v510-v516
YAP(achimon)C::Asia Hachioji 2016 mid in Shinagawa
Kenichi Ishigaki (@charsbar) July 3, 2016 YAP(achimon)C::Asia Hachioji 2016mid
https://www.slideshare.net/charsbar/cpan-63708689
CPAN Directory INABA Hitoshi
http://search.cpan.org/~ina/
BackPAN
http://backpan.perl.org/authors/id/I/IN/INA/
Recent Perl packages by "INABA Hitoshi"
http://code.activestate.com/ppm/author:INABA-Hitoshi/ACKNOWLEDGEMENTS
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
http://search.cpan.org/~utashiro/
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://dl.dropbox.com/u/23756062/perlwin.html
https://sites.google.com/site/hiroa63iz/perlwin
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)
Takahashi Masatuyo, JPerl Wiki
http://ja.jperl.wikia.com/wiki/JPerl_Wiki
Juerd, Perl Unicode Advice
http://juerd.nl/site.plp/perluniadvice
daily dayflower, 2008-06-25 perluniadvice
http://d.hatena.ne.jp/dayflower/20080625/1214374293
Unicode issues in Perl
http://www.i-programmer.info/programming/other-languages/1973-unicode-issues-in-perl.html
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
Error: Runtime exception on jperl 5.005_03
http://www.rakunet.org/tsnet/TSperl/12/374.html
http://www.rakunet.org/tsnet/TSperl/12/375.html
http://www.rakunet.org/tsnet/TSperl/12/376.html
http://www.rakunet.org/tsnet/TSperl/12/377.html
http://www.rakunet.org/tsnet/TSperl/12/378.html
http://www.rakunet.org/tsnet/TSperl/12/379.html
http://www.rakunet.org/tsnet/TSperl/12/380.html
http://www.rakunet.org/tsnet/TSperl/12/382.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
Object-oriented with Perl
http://www.freeml.com/perl-oo/486
http://www.freeml.com/perl-oo/487
http://www.freeml.com/perl-oo/490
http://www.freeml.com/perl-oo/491
http://www.freeml.com/perl-oo/492
http://www.freeml.com/perl-oo/494
http://www.freeml.com/perl-oo/514