NAME
Big5Plus - Source code filter to escape Big5Plus script
Install and Usage
There are two steps there:
You'll have to download Big5Plus.pm and Ebig5plus.pm and put it in your perl lib directory.
You'll need to write "use Big5Plus;" at head of the script.
SYNOPSIS
use Big5Plus;
use Big5Plus ver.sion; --- require minimum version
use Big5Plus ver.sion.0; --- expects version (match or die)
use Big5Plus qw(ord reverse getc); --- demand enhanced feature of ord, reverse, and getc
use Big5Plus ver.sion qw(ord reverse getc);
use Big5Plus ver.sion.0 qw(ord reverse getc);
# "no Big5Plus;" not supported
or
$ perl Big5Plus.pm Big5Plus_script.pl > Escaped_script.pl.e
then
$ perl Escaped_script.pl.e
Big5Plus_script.pl --- script written in Big5Plus
Escaped_script.pl.e --- escaped script
subroutines:
Big5Plus::ord(...);
Big5Plus::reverse(...);
Big5Plus::getc(...);
Big5Plus::length(...);
Big5Plus::substr(...);
Big5Plus::index(...);
Big5Plus::rindex(...);
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
Big5Plus software is "middleware" between perl interpreter and your Perl script written in Big5Plus.
Perl is optimized for problems which are about 90% working with text and about 10% everything else. Even if this "text" doesn't contain Big5Plus, Perl3 or later can treat Big5Plus as binary data.
By "use Big5Plus;", it automatically interpret your script as Big5Plus. The various functions of perl including a regular expression can treat Big5Plus 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 Big5Plus 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 Big5Plus, 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. Big5Plus.pm, Ebig5plus.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;
}
$status;
}
sub import {
filter_add(\&multibyte_filter);
}
1;I am glad that I could confirm my idea is not so wrong.
Command-line Wildcard Expansion on DOS-like Systems
The default command shells on DOS-like systems (COMMAND.COM or cmd.exe or Win95Cmd.exe) do not expand wildcard arguments supplied to programs. Instead, import of Ebig5plus.pm works well.
in Ebig5plus.pm
#
# @ARGV wildcard globbing
#
sub import {
if ($^O =~ /\A (?: MSWin32 | NetWare | symbian | dos ) \z/oxms) {
my @argv = ();
for (@ARGV) {
# has space
if (/\A (?:$q_char)*? [ ] /oxms) {
if (my @glob = Ebig5plus::glob(qq{"$_"})) {
push @argv, @glob;
}
else {
push @argv, $_;
}
}
# has wildcard metachar
elsif (/\A (?:$q_char)*? [*?] /oxms) {
if (my @glob = Ebig5plus::glob($_)) {
push @argv, @glob;
}
else {
push @argv, $_;
}
}
# no wildcard globbing
else {
push @argv, $_;
}
}
@ARGV = @argv;
}
}Software Composition
Big5Plus.pm --- source code filter to escape Big5Plus
Ebig5plus.pm --- run-time routines for Big5Plus.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 Big5Plus;' in your script.
---------------------------------
Before You do
---------------------------------
(nothing) use Big5Plus;
---------------------------------Escaping Multiple-Octet Code (Big5Plus.pm provides)
Insert chr(0x5c) before @ [ \ ] ^ ` { | and } in multiple-octet of
string in single quote ('', q{}, <<'END', and qw{})
string in double quote ("", qq{}, <<END, <<"END", ``, qx{}, and <<`END`)
regexp in single quote (m'', s''', split(''), split(m''), and qr'')
regexp in double quote (//, m//, ??, s///, split(//), split(m//), and qr//)
character in tr/// (tr/// and y///)
ex. Japanese Katakana "SO" like [ `/ ] code is "\x83\x5C" in SJIS
see hex dump
-----------------------------------------
source script "`/" [83 5c]
-----------------------------------------
Here, use SJIS;
hex dump
-----------------------------------------
escaped script "`\/" [83 [5c] 5c]
-----------------------------------------
^--- escape by SJIS software
by the by see hex dump
-----------------------------------------
your eye's "`/\" [83 5c] [5c]
-----------------------------------------
perl eye's "`\/" [83] \[5c]
-----------------------------------------
hex dump
-----------------------------------------
in the perl "`/" [83] [5c]
-----------------------------------------Multiple-Octet Anchoring of Regular Expression (Big5Plus.pm provides)
Big5Plus.pm applies multiple-octet anchoring at beginning of regular expression.
--------------------------------------------------------------------------------
Before After
--------------------------------------------------------------------------------
m/regexp/ m/${Ebig5plus::anchor}(?:regexp).../
--------------------------------------------------------------------------------Escaping Second Octet (Big5Plus.pm provides)
Big5Plus.pm escapes second octet of multiple-octet character in regular expression.
--------------------------------------------------------------------------------
Before After
--------------------------------------------------------------------------------
m<...`/...> m<...`/\...>
--------------------------------------------------------------------------------Multiple-Octet Character Regular Expression (Big5Plus.pm provides)
Big5Plus.pm clusters multiple-octet character with quantifier, makes cluster from multiple-octet custom character classes. And makes multiple-octet version metasymbol from classic Perl character class shortcuts and POSIX-style character classes.
--------------------------------------------------------------------------------
Before After
--------------------------------------------------------------------------------
m/...MULTIOCT+.../ m/...(?:MULTIOCT)+.../
m/...[AN-EM].../ m/...(?:A[N-Z]|[B-D][A-Z]|E[A-M]).../
m/...\D.../ m/...(?:${Ebig5plus::eD}).../
m/...[[:^digit:]].../ m/...(?:${Ebig5plus::not_digit}).../
--------------------------------------------------------------------------------Calling 'Ebig5plus::ignorecase()' (Big5Plus.pm provides)
Big5Plus.pm applies calling 'Ebig5plus::ignorecase()' instead of /i modifier.
--------------------------------------------------------------------------------
Before After
--------------------------------------------------------------------------------
m/...$var.../i m/...@{[Ebig5plus::ignorecase($var)]}.../
--------------------------------------------------------------------------------Character-Oriented Regular Expression
Regular expression works as character-oriented that has no /b modifier.
--------------------------------------------------------------------------------
Before After
--------------------------------------------------------------------------------
/regexp/ /ditto$Ebig5plus::matched/
m/regexp/ m/ditto$Ebig5plus::matched/
?regexp? m?ditto$Ebig5plus::matched?
m?regexp? m?ditto$Ebig5plus::matched?
$_ =~ ($_ =~ m/ditto$Ebig5plus::matched/) ?
s/regexp/replacement/ eval{ Ebig5plus::s_matched(); local $^W=0; my $__r=qq/replacement/; $_="${1}$__r$'"; 1 } :
undef
$_ !~ ($_ !~ m/ditto$Ebig5plus::matched/) ?
s/regexp/replacement/ 1 :
eval{ Ebig5plus::s_matched(); local $^W=0; my $__r=qq/replacement/; $_="${1}$__r$'"; undef }
split(/regexp/) Ebig5plus::split(qr/regexp/)
split(m/regexp/) Ebig5plus::split(qr/regexp/)
split(qr/regexp/) Ebig5plus::split(qr/regexp/)
qr/regexp/ qr/ditto$Ebig5plus::matched/
--------------------------------------------------------------------------------Byte-Oriented Regular Expression
Regular expression works as byte-oriented that has /b modifier.
--------------------------------------------------------------------------------
Before After
--------------------------------------------------------------------------------
/regexp/b /(?:regexp)$Ebig5plus::matched/
m/regexp/b m/(?:regexp)$Ebig5plus::matched/
?regexp?b m?regexp$Ebig5plus::matched?
m?regexp?b m?regexp$Ebig5plus::matched?
$_ =~ ($_ =~ m/(\G[\x00-\xFF]*?)(?:regexp)$Ebig5plus::matched/) ?
s/regexp/replacement/b eval{ Ebig5plus::s_matched(); local $^W=0; my $__r=qq/replacement/; $_="${1}$__r$'"; 1 } :
undef
$_ !~ ($_ !~ m/(\G[\x00-\xFF]*?)(?:regexp)$Ebig5plus::matched/) ?
s/regexp/replacement/b 1 :
eval{ Ebig5plus::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)$Ebig5plus::matched/
--------------------------------------------------------------------------------Escaping Character Classes (Ebig5plus.pm provides)
The character classes are redefined as follows to backward compatibility.
---------------------------------------------------------------
Before After
---------------------------------------------------------------
. ${Ebig5plus::dot}
${Ebig5plus::dot_s} (/s modifier)
\d [0-9] (universally)
\s \s
\w [0-9A-Z_a-z] (universally)
\D ${Ebig5plus::eD}
\S ${Ebig5plus::eS}
\W ${Ebig5plus::eW}
\h [\x09\x20]
\v [\x0A\x0B\x0C\x0D]
\H ${Ebig5plus::eH}
\V ${Ebig5plus::eV}
\C [\x00-\xFF]
\X X (so, just 'X')
\R ${Ebig5plus::eR}
\N ${Ebig5plus::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:] ${Ebig5plus::not_alnum}
[:^alpha:] ${Ebig5plus::not_alpha}
[:^ascii:] ${Ebig5plus::not_ascii}
[:^blank:] ${Ebig5plus::not_blank}
[:^cntrl:] ${Ebig5plus::not_cntrl}
[:^digit:] ${Ebig5plus::not_digit}
[:^graph:] ${Ebig5plus::not_graph}
[:^lower:] ${Ebig5plus::not_lower}
${Ebig5plus::not_lower_i} (/i modifier)
[:^print:] ${Ebig5plus::not_print}
[:^punct:] ${Ebig5plus::not_punct}
[:^space:] ${Ebig5plus::not_space}
[:^upper:] ${Ebig5plus::not_upper}
${Ebig5plus::not_upper_i} (/i modifier)
[:^word:] ${Ebig5plus::not_word}
[:^xdigit:] ${Ebig5plus::not_xdigit}
---------------------------------------------------------------\b and \B are redefined as follows to backward compatibility.
---------------------------------------------------------------
Before After
---------------------------------------------------------------
\b ${Ebig5plus::eb}
\B ${Ebig5plus::eB}
---------------------------------------------------------------Definitions in Ebig5plus.pm.
---------------------------------------------------------------------------------------------------------------------------------------------------------
After Definition
---------------------------------------------------------------------------------------------------------------------------------------------------------
${Ebig5plus::anchor} qr{\G(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE])*?}
for over 32766 octets string on ActivePerl5.6 and Perl5.10 or later
qr{\G(?(?=.{0,32766}\z)(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE])*?|(?(?=[$sbcs]+\z).*?|(?:.*?[$sbcs](?:$tbcs_1st[^$sbcs]{2})*?)))}oxms;
${Ebig5plus::dot} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE\x0A])}
${Ebig5plus::dot_s} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE])}
${Ebig5plus::eD} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE0-9])}
${Ebig5plus::eS} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE\s])}
${Ebig5plus::eW} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE0-9A-Z_a-z])}
${Ebig5plus::eH} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE\x09\x20])}
${Ebig5plus::eV} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE\x0A\x0B\x0C\x0D])}
${Ebig5plus::eR} qr{(?:\x0D\x0A|[\x0A\x0D])}
${Ebig5plus::eN} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE\x0A])}
${Ebig5plus::not_alnum} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE\x30-\x39\x41-\x5A\x61-\x7A])}
${Ebig5plus::not_alpha} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE\x41-\x5A\x61-\x7A])}
${Ebig5plus::not_ascii} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE\x00-\x7F])}
${Ebig5plus::not_blank} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE\x09\x20])}
${Ebig5plus::not_cntrl} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE\x00-\x1F\x7F])}
${Ebig5plus::not_digit} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE\x30-\x39])}
${Ebig5plus::not_graph} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE\x21-\x7F])}
${Ebig5plus::not_lower} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE\x61-\x7A])}
${Ebig5plus::not_lower_i} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE])}
${Ebig5plus::not_print} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE\x20-\x7F])}
${Ebig5plus::not_punct} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE\x21-\x2F\x3A-\x3F\x40\x5B-\x5F\x60\x7B-\x7E])}
${Ebig5plus::not_space} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE\s\x0B])}
${Ebig5plus::not_upper} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE\x41-\x5A])}
${Ebig5plus::not_upper_i} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE])}
${Ebig5plus::not_word} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE\x30-\x39\x41-\x5A\x5F\x61-\x7A])}
${Ebig5plus::not_xdigit} qr{(?:[\x81-\xFE][\x00-\xFF]|[^\x81-\xFE\x30-\x39\x41-\x46\x61-\x66])}
${Ebig5plus::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))}
${Ebig5plus::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 \N, \p, \P, and \X (Big5Plus.pm provides)
Big5Plus.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
------------------------------------Escaping Built-in Functions (Big5Plus.pm and Ebig5plus.pm provide)
Insert 'Ebig5plus::' at head of function name. Ebig5plus.pm provides your script Ebig5plus::* subroutines.
-------------------------------------------
Before After Works as
-------------------------------------------
length length Byte
substr substr Byte
pos pos Byte
split Ebig5plus::split Character
tr/// Ebig5plus::tr Character
tr///b tr/// Byte
tr///B tr/// Byte
y/// Ebig5plus::tr Character
y///b tr/// Byte
y///B tr/// Byte
chop Ebig5plus::chop Character
index Ebig5plus::index Character
rindex Ebig5plus::rindex Character
lc Ebig5plus::lc Character
lcfirst Ebig5plus::lcfirst Character
uc Ebig5plus::uc Character
ucfirst Ebig5plus::ucfirst Character
fc Ebig5plus::fc Character
chr Ebig5plus::chr Character
glob Ebig5plus::glob Character
lstat Ebig5plus::lstat Character
opendir Ebig5plus::opendir Character
stat Ebig5plus::stat Character
unlink Ebig5plus::unlink Character
chdir Ebig5plus::chdir Character
do Ebig5plus::do Character
require Ebig5plus::require Character
-------------------------------------------
------------------------------------------------------------------------------------------------------------------------
Before After
------------------------------------------------------------------------------------------------------------------------
use Perl::Module; BEGIN { Ebig5plus::require 'Perl/Module.pm'; Perl::Module->import() if Perl::Module->can('import'); }
use Perl::Module @list; BEGIN { Ebig5plus::require 'Perl/Module.pm'; Perl::Module->import(@list) if Perl::Module->can('import'); }
use Perl::Module (); BEGIN { Ebig5plus::require 'Perl/Module.pm'; }
no Perl::Module; BEGIN { Ebig5plus::require 'Perl/Module.pm'; Perl::Module->unimport() if Perl::Module->can('unimport'); }
no Perl::Module @list; BEGIN { Ebig5plus::require 'Perl/Module.pm'; Perl::Module->unimport(@list) if Perl::Module->can('unimport'); }
no Perl::Module (); BEGIN { Ebig5plus::require 'Perl/Module.pm'; }
------------------------------------------------------------------------------------------------------------------------Escaping File Test Operators (Big5Plus.pm and Ebig5plus.pm provide)
Insert 'Ebig5plus::' instead of '-' of operator.
Available in MSWin32, MacOS, and UNIX-like systems
--------------------------------------------------------------------------
Before After Meaning
--------------------------------------------------------------------------
-r Ebig5plus::r File or directory is readable by this (effective) user or group
-w Ebig5plus::w File or directory is writable by this (effective) user or group
-e Ebig5plus::e File or directory name exists
-x Ebig5plus::x File or directory is executable by this (effective) user or group
-z Ebig5plus::z File exists and has zero size (always false for directories)
-f Ebig5plus::f Entry is a plain file
-d Ebig5plus::d Entry is a directory
-t -t The filehandle is a TTY (as reported by the isatty() system function;
filenames can't be tested by this test)
-T Ebig5plus::T File looks like a "text" file
-B Ebig5plus::B File looks like a "binary" file
-M Ebig5plus::M Modification age (measured in days)
-A Ebig5plus::A Access age (measured in days)
-C Ebig5plus::C Inode-modification age (measured in days)
-s Ebig5plus::s File or directory exists and has nonzero size
(the value is the size in bytes)
--------------------------------------------------------------------------
Available in MacOS and UNIX-like systems
--------------------------------------------------------------------------
Before After Meaning
--------------------------------------------------------------------------
-R Ebig5plus::R File or directory is readable by this real user or group
-W Ebig5plus::W File or directory is writable by this real user or group
-X Ebig5plus::X File or directory is executable by this real user or group
-l Ebig5plus::l Entry is a symbolic link
-S Ebig5plus::S Entry is a socket
--------------------------------------------------------------------------
Not available in MSWin32 and MacOS
--------------------------------------------------------------------------
Before After Meaning
--------------------------------------------------------------------------
-o Ebig5plus::o File or directory is owned by this (effective) user
-O Ebig5plus::O File or directory is owned by this real user
-p Ebig5plus::p Entry is a named pipe (a "fifo")
-b Ebig5plus::b Entry is a block-special file (like a mountable disk)
-c Ebig5plus::c Entry is a character-special file (like an I/O device)
-u Ebig5plus::u File or directory is setuid
-g Ebig5plus::g File or directory is setgid
-k Ebig5plus::k File or directory has the sticky bit set
---------------------------------------------------------------------------w only inspects the read-only file attribute (FILE_ATTRIBUTE_READONLY), which determines whether the directory can be deleted, not whether it can be written to. Directories always have read and write access unless denied by discretionary access control lists (DACLs). (MSWin32) -R, -W, -X, -O are indistinguishable from -r, -w, -x, -o. (MSWin32) -g, -k, -l, -u, -A are not particularly meaningful. (MSWin32) -x (or -X) determine if a file ends in one of the executable suffixes. -S is meaningless. (MSWin32)
As of Perl 5.00503, as a form of purely syntactic sugar, you can stack file test operators, in a way that -w -x $file is equivalent to -x $file && -w _ .
if ( -w -r $file ) {
print "The file is both readable and writable!\n";
}Escaping Function Name (You do)
You need write 'Big5Plus::' at head of function name when you want character- oriented subroutine. See 'Character-Oriented Subroutines'.
--------------------------------------------------------
Function Character-Oriented Description
--------------------------------------------------------
ord Big5Plus::ord
reverse Big5Plus::reverse
getc Big5Plus::getc
length Big5Plus::length
substr Big5Plus::substr
index Big5Plus::index See 'About Indexes'
rindex Big5Plus::rindex See 'About Rindexes'
--------------------------------------------------------
About Indexes
-------------------------------------------------------------------------
Function Works as Returns as Description
-------------------------------------------------------------------------
index Character Byte JPerl semantics (most useful)
(same as Ebig5plus::index)
Big5Plus::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 Ebig5plus::rindex)
Big5Plus::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
$ord = Big5Plus::ord($string); This subroutine returns the numeric value (ASCII or Big5Plus 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 Big5Plus qw(ord);", ord of your script will be rewritten in Big5Plus::ord. Big5Plus::ord is not compatible with ord of JPerl.Reverse List or String
@reverse = Big5Plus::reverse(@list); $reverse = Big5Plus::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 Big5Plus qw(reverse);", reverse of your script will be rewritten in Big5Plus::reverse. Big5Plus::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 = Big5Plus::getc(FILEHANDLE); $getc = Big5Plus::getc($filehandle); $getc = Big5Plus::getc; This subroutine returns the next character from the input file attached to FILEHANDLE. It returns undef at end-of-file, or if an I/O error was encountered. If FILEHANDLE is omitted, the subroutine reads from STDIN. This subroutine is somewhat slow, but it's occasionally useful for single-character input from the keyboard -- provided you manage to get your keyboard input unbuffered. This subroutine requests unbuffered input from the standard I/O library. Unfortunately, the standard I/O library is not so standard as to provide a portable way to tell the underlying operating system to supply unbuffered keyboard input to the standard I/O system. To do that, you have to be slightly more clever, and in an operating-system-dependent fashion. Under Unix you might say this: if ($BSD_STYLE) { system "stty cbreak </dev/tty >/dev/tty 2>&1"; } else { system "stty", "-icanon", "eol", "\001"; } $key = Big5Plus::getc; if ($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 Big5Plus qw(getc);", getc of your script will be rewritten in Big5Plus::getc. Big5Plus::getc is not compatible with getc of JPerl.Length by Big5Plus Character
$length = Big5Plus::length($string); $length = Big5Plus::length(); This subroutine returns the length in characters (programmer-visible characters) of the scalar value $string. If $string is omitted, it returns the Big5Plus::length of $_. Do not try to use Big5Plus::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 Big5Plus Character
$substr = Big5Plus::substr($string,$offset,$length,$replacement); $substr = Big5Plus::substr($string,$offset,$length); $substr = Big5Plus::substr($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 = Big5Plus::substr $s, 4, 5; # black my $middle = Big5Plus::substr $s, 4, -11; # black cat climbed the my $end = Big5Plus::substr $s, 14; # climbed the green tree my $tail = Big5Plus::substr $s, -4; # tree my $z = Big5Plus::substr $s, -4, 2; # tr If Perl version 5.14 or later, you can use the Big5Plus::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, Big5Plus::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 $name = 'fred'; Big5Plus::substr($name, 4) = 'dy'; # $name is now 'freddy' my $null = Big5Plus::substr $name, 6, 2; # returns "" (no warning) my $oops = Big5Plus::substr $name, 7; # returns undef, with warning Big5Plus::substr($name, 7) = 'gap'; # raises an exception An alternative to using Big5Plus::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 = Big5Plus::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 Big5Plus::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: $x = '1234'; for (Big5Plus::substr($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: $x = '1234'; for (Big5Plus::substr($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 Big5Plus Character
$index = Big5Plus::index($string,$substring,$offset); $index = Big5Plus::index($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 = Big5Plus::index($string, $lookfor, $pos)) > -1) { print "Found at $pos\n"; $pos++; }Rindex by Big5Plus Character
$rindex = Big5Plus::rindex($string,$substring,$offset); $rindex = Big5Plus::rindex($string,$substring); This subroutine works just like Big5Plus::index except that it returns the character position of the last occurrence of $substring in $string (a reverse Big5Plus::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: $pos = Big5Plus::length($string); while (($pos = Big5Plus::rindex($string, $lookfor, $pos)) >= 0) { print "Found at $pos\n"; $pos--; }Filename Globbing
@glob = glob($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 Ebig5plus::glob() subroutine. See Ebig5plus::glob of Ebig5plus.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 Big5Plus 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 Big5Plus 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--; }
Un-Escaping bytes::* Subroutines (Big5Plus.pm provides)
Big5Plus.pm 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
---------------------------------------Escaping Standard Module Content (You do)
You need copy built-in standard module to /Perl/site/lib/Big5Plus and change 'use utf8;' to 'use Big5Plus;' in its. You need help yourself for now.
Back to and see 'Escaping Your Script'. Enjoy hacking!!
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 Ebig5plus.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
SJIS_NONBLOCK.
Example:
SET SJIS_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 Big5Plus 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.
chdir
Function chdir() can always be executed with perl5.005.
There are the following limitations for DOS-like system(any of MSWin32, NetWare, symbian, dos).
On perl5.006 or perl5.00800, if path is ended by chr(0x5C), it needs jacode.pl library.
On perl5.008001 or later, perl5.010, perl5.012, perl5.014, perl5.016, perl5.018, perl5.020 if path is ended by chr(0x5C), chdir succeeds when a short path name (8dot3name) can be acquired according to COMMAND.COM or cmd.exe or Win95Cmd.exe. However, leaf-subdirectory of the current directory is a short path name (8dot3name).
see also, Bug #81839 chdir does not work with chr(0x5C) at end of path http://bugs.activestate.com/show_bug.cgi?id=81839Big5Plus::substr as Lvalue
If Perl version is older than 5.14, Big5Plus::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.
Big5Plus::substr($string, 13, 4, "JPerl");
Special Variables $` and $& need /( Capture All )/
Because $` and $& use $1. ------------------------------------------------------------------------------------------- Before After Works as ------------------------------------------------------------------------------------------- $` Ebig5plus::PREMATCH() CORE::substr($&,0,CORE::length($&)-CORE::length($1)) ${`} Ebig5plus::PREMATCH() CORE::substr($&,0,CORE::length($&)-CORE::length($1)) $PREMATCH Ebig5plus::PREMATCH() CORE::substr($&,0,CORE::length($&)-CORE::length($1)) ${^PREMATCH} Ebig5plus::PREMATCH() CORE::substr($&,0,CORE::length($&)-CORE::length($1)) $& Ebig5plus::MATCH() $1 ${&} Ebig5plus::MATCH() $1 $MATCH Ebig5plus::MATCH() $1 ${^MATCH} Ebig5plus::MATCH() $1 $' $' $' ${'} ${'} $' $POSTMATCH Ebig5plus::POSTMATCH() $' ${^POSTMATCH} Ebig5plus::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 Big5Plus/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 '?'.
Look-behind Assertion
The look-behind assertion like (?<=[A-Z]) is not prevented from matching trail octet of the previous multiple-octet code.
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.
${^WIN32_SLOPPY_STAT} is ignored
Even if ${^WIN32_SLOPPY_STAT} is set to a true value, file test functions Ebig5plus::*(), Ebig5plus::lstat(), and Ebig5plus::stat() on Microsoft Windows open the file for the path which has chr(0x5c) at end.
eval "string"
The function which escapes "string" of eval has not been implemented yet. It will be supported in future versions.
Delimiter of String and Regexp
qq//, q//, qw//, qx//, qr//, m//, s///, tr///, and y/// can't use a wide character as the delimiter.
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.
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 this 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 strings as Binary strings |
| Binary strings as Text strings |
+--------------------------------------------+
| Not UTF8 Flagged, UNIX/C-ism |
+--------------------------------------------+
Script could be written in native encoding of operating systems.
- Like contents of a file
- Like a file name on the file systems
- Like command lines
- Like environment variables
- Like parameters of API
In UNIX Everything is a File
- In UNIX everything is a stream of bytes
- In UNIX the filesystem is used as a universal name spaceIdeally, 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,Big5Plus +--------------+-------+-------+-------+-------+-------+ | 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.
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.
Big5Plus 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 provide 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
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
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
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
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
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