FM / perl5

/usr/share/perl5

Name	Size	Mode	Actions
App/	-	0755	rm
Archive/	-	0755	rm
Attribute/	-	0755	rm
autodie/	-	0755	rm
B/	-	0755	rm
Carp/	-	0755	rm
CGI/	-	0755	rm
Class/	-	0755	rm
Config/	-	0755	rm
CPAN/	-	0755	rm
CPANPLUS/	-	0755	rm
DBIx/	-	0755	rm
DBM_Filter/	-	0755	rm
Devel/	-	0755	rm
Digest/	-	0755	rm
Encode/	-	0755	rm
encoding/	-	0755	rm
Exporter/	-	0755	rm
ExtUtils/	-	0755	rm
File/	-	0755	rm
Filter/	-	0755	rm
Getopt/	-	0755	rm
HTML/	-	0755	rm
I18N/	-	0755	rm
IO/	-	0755	rm
IPC/	-	0755	rm
JSON/	-	0755	rm
Locale/	-	0755	rm
Log/	-	0755	rm
Math/	-	0755	rm
Memoize/	-	0755	rm
Module/	-	0755	rm
Net/	-	0755	rm
Object/	-	0755	rm
overload/	-	0755	rm
Package/	-	0755	rm
Params/	-	0755	rm
Parse/	-	0755	rm
PerlIO/	-	0755	rm
Pod/	-	0755	rm
pod/	-	0755	rm
Search/	-	0755	rm
TAP/	-	0755	rm
Term/	-	0755	rm
Test/	-	0755	rm
Test2/	-	0755	rm
Text/	-	0755	rm
Thread/	-	0755	rm
Tie/	-	0755	rm
Time/	-	0755	rm
Unicode/	-	0755	rm
unicore/	-	0755	rm
URI/	-	0755	rm
User/	-	0755	rm
vendor_perl/	-	0755	rm
version/	-	0755	rm
warnings/	-	0755	rm
abbrev.pl	838	0644	edit dl rm
AnyDBM_File.pm	2594	0644	edit dl rm
assert.pl	1298	0644	edit dl rm
attributes.pm	14877	0644	edit dl rm
autodie.pm	11763	0644	edit dl rm
AutoLoader.pm	14997	0644	edit dl rm
AutoSplit.pm	19637	0644	edit dl rm
autouse.pm	4238	0644	edit dl rm
base.pm	6986	0644	edit dl rm
Benchmark.pm	28530	0644	edit dl rm
bigfloat.pl	7368	0644	edit dl rm
bigint.pl	8959	0644	edit dl rm
bigint.pm	17852	0644	edit dl rm
bignum.pm	18673	0644	edit dl rm
bigrat.pl	4476	0644	edit dl rm
bigrat.pm	14442	0644	edit dl rm
blib.pm	2106	0644	edit dl rm
bytes.pm	2384	0644	edit dl rm
bytes_heavy.pl	758	0644	edit dl rm
cacheout.pl	1122	0644	edit dl rm
Carp.pm	7611	0644	edit dl rm
CGI.pm	261478	0644	edit dl rm
charnames.pm	15670	0644	edit dl rm
complete.pl	3191	0644	edit dl rm
constant.pm	12528	0644	edit dl rm
CORE.pod	1569	0644	edit dl rm
CPAN.pm	130907	0644	edit dl rm
CPANPLUS.pm	7269	0644	edit dl rm
ctime.pl	1993	0644	edit dl rm
DB.pm	19202	0644	edit dl rm
DBM_Filter.pm	14415	0644	edit dl rm
diagnostics.pm	17380	0644	edit dl rm
Digest.pm	10412	0644	edit dl rm
DirHandle.pm	1937	0644	edit dl rm
dotsh.pl	2175	0644	edit dl rm
Dumpvalue.pm	16899	0644	edit dl rm
dumpvar.pl	15275	0644	edit dl rm
English.pm	4488	0644	edit dl rm
Env.pm	5170	0644	edit dl rm
exceptions.pl	1736	0644	edit dl rm
Expect.pm	54725	0644	edit dl rm
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fastcwd.pl	1019	0644	edit dl rm
Fatal.pm	40966	0644	edit dl rm
feature.pm	5092	0644	edit dl rm
fields.pm	9507	0644	edit dl rm
FileCache.pm	5570	0644	edit dl rm
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filetest.pm	4003	0644	edit dl rm
find.pl	1185	0644	edit dl rm
FindBin.pm	5658	0644	edit dl rm
finddepth.pl	1130	0644	edit dl rm
flush.pl	642	0644	edit dl rm
getcwd.pl	1427	0644	edit dl rm
getopt.pl	1322	0644	edit dl rm
getopts.pl	1406	0644	edit dl rm
hostname.pl	727	0644	edit dl rm
if.pm	1166	0644	edit dl rm
importenv.pl	283	0644	edit dl rm
integer.pm	3266	0644	edit dl rm
less.pm	3084	0644	edit dl rm
locale.pm	820	0644	edit dl rm
look.pl	1255	0644	edit dl rm
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newgetopt.pl	2213	0644	edit dl rm
NEXT.pm	18481	0644	edit dl rm
ok.pm	967	0444	edit dl rm
open.pm	7740	0644	edit dl rm
open2.pl	185	0644	edit dl rm
open3.pl	185	0644	edit dl rm
overload.pm	48050	0644	edit dl rm
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parent.pm	2998	0644	edit dl rm
perl5db.pl	317682	0644	edit dl rm
PerlIO.pm	11122	0644	edit dl rm
pwd.pl	1478	0644	edit dl rm
Safe.pm	24326	0644	edit dl rm
SelectSaver.pm	1076	0644	edit dl rm
SelfLoader.pm	17341	0644	edit dl rm
Shell.pm	8685	0644	edit dl rm
shellwords.pl	276	0644	edit dl rm
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stat.pl	590	0644	edit dl rm
strict.pm	3716	0644	edit dl rm
subs.pm	842	0644	edit dl rm
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syslog.pl	4806	0644	edit dl rm
tainted.pl	164	0644	edit dl rm
termcap.pl	4114	0644	edit dl rm
Test.pm	28800	0644	edit dl rm
Test2.pm	6393	0444	edit dl rm
Thread.pm	8285	0644	edit dl rm
timelocal.pl	690	0644	edit dl rm
UNIVERSAL.pm	6536	0644	edit dl rm
utf8.pm	6918	0644	edit dl rm
utf8_heavy.pl	8001	0644	edit dl rm
validate.pl	3731	0644	edit dl rm
vars.pm	2358	0644	edit dl rm
version.pm	1037	0644	edit dl rm
version.pod	12315	0644	edit dl rm
vmsish.pm	4328	0644	edit dl rm
warnings.pm	16133	0644	edit dl rm

Edit: /usr/share/perl5/bytes.pm (2384B)

package bytes;

our $VERSION = '1.03';

$bytes::hint_bits = 0x00000008;

sub import {
    $^H |= $bytes::hint_bits;
}

sub unimport {
    $^H &= ~$bytes::hint_bits;
}

sub AUTOLOAD {
    require "bytes_heavy.pl";
    goto &$AUTOLOAD if defined &$AUTOLOAD;
    require Carp;
    Carp::croak("Undefined subroutine $AUTOLOAD called");
}

sub length (_);
sub chr (_);
sub ord (_);
sub substr ($$;$$);
sub index ($$;$);
sub rindex ($$;$);

1;
__END__

=head1 NAME

bytes - Perl pragma to force byte semantics rather than character semantics

=head1 SYNOPSIS

use bytes;
    ... chr(...);       # or bytes::chr
    ... index(...);     # or bytes::index
    ... length(...);    # or bytes::length
    ... ord(...);       # or bytes::ord
    ... rindex(...);    # or bytes::rindex
    ... substr(...);    # or bytes::substr
    no bytes;

=head1 DESCRIPTION

The C<use bytes> pragma disables character semantics for the rest of the
lexical scope in which it appears.  C<no bytes> can be used to reverse
the effect of C<use bytes> within the current lexical scope.

Perl normally assumes character semantics in the presence of character
data (i.e. data that has come from a source that has been marked as
being of a particular character encoding). When C<use bytes> is in
effect, the encoding is temporarily ignored, and each string is treated
as a series of bytes.

As an example, when Perl sees C<$x = chr(400)>, it encodes the character
in UTF-8 and stores it in $x. Then it is marked as character data, so,
for instance, C<length $x> returns C<1>. However, in the scope of the
C<bytes> pragma, $x is treated as a series of bytes - the bytes that make
up the UTF8 encoding - and C<length $x> returns C<2>:

$x = chr(400);
    print "Length is ", length $x, "\n";     # "Length is 1"
    printf "Contents are %vd\n", $x;         # "Contents are 400"
    { 
        use bytes; # or "require bytes; bytes::length()"
        print "Length is ", length $x, "\n"; # "Length is 2"
        printf "Contents are %vd\n", $x;     # "Contents are 198.144"
    }

chr(), ord(), substr(), index() and rindex() behave similarly.

For more on the implications and differences between character
semantics and byte semantics, see L<perluniintro> and L<perlunicode>.

=head1 LIMITATIONS

bytes::substr() does not work as an lvalue().

=head1 SEE ALSO

L<perluniintro>, L<perlunicode>, L<utf8>

=cut

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