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PATH: usr / share / perl5

use strict;
use warnings;

# A tiny private library routine which is a helper to several Perl core
# modules, to allow a paradigm to be implemented in a single place.  The name,
# contents, or even the existence of this file may be changed at any time and
# are NOT to be used by anything outside the Perl core.

sub _meta_notation ($) {

# Returns a copy of the input string with the nonprintable characters
    # below 0x100 changed into printables.  Any ASCII printables or above 0xFF
    # are unchanged.  (XXX Probably above-Latin1 characters should be
    # converted to \X{...})
    #
    # \0 .. \x1F (which are "\c@" .. "\c_") are changed into ^@, ^A, ^B, ...
    # ^Z, ^[, ^\, ^], ^^, ^_
    # \c? is changed into ^?.
    #
    # The above accounts for all the ASCII-range nonprintables.
    #
    # On ASCII platforms, the upper-Latin1-range characters are converted to
    # Meta notation, so that \xC1 becomes 'M-A', \xE2 becomes 'M-b', etc.
    # This is how it always has worked, so is continued that way for backwards
    # compatibility.  The range \x80 .. \x9F becomes M-^@ .. M-^A, M-^B, ...
    # M-^Z, M-^[, M-^\, M-^], M-^, M-^_
    #
    # On EBCDIC platforms, the upper-Latin1-range characters are converted
    # into '\x{...}'  Meta notation doesn't make sense on EBCDIC platforms
    # because the ASCII-range printables are a mixture of upper bit set or
    # not.  [A-Za-Z0-9] all have the upper bit set.  The underscore likely
    # doesn't; and other punctuation may or may not.  There's no simple
    # pattern.

my $string = shift;

$string =~ s/([\0-\037])/
               sprintf("^%c",utf8::unicode_to_native(ord($1)^64))/xeg;
    $string =~ s/\c?/^?/g;
    if (ord("A") == 65) {
        $string =~ s/([\200-\237])/sprintf("M-^%c",(ord($1)&0177)^64)/eg;
        $string =~ s/([\240-\377])/sprintf("M-%c"  ,ord($1)&0177)/eg;
    }
    else {
        no warnings 'experimental::regex_sets';
        # Leave alone things above \xff
        $string =~ s/( (?[ [\x00-\xFF] & [:^print:]])) /
                  sprintf("\\x{%X}", ord($1))/xaeg;
    }

return $string;
}
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[-] URI.pm [edit]
[+] Compress
[+] Math
[+] Term
[+] Module
[-] bytes.pm [edit]
[+] User
[-] Dumpvalue.pm [edit]
[+] URI
[-] bytes_heavy.pl [edit]
[-] SelectSaver.pm [edit]
[+] Locale
[+] Thread
[-] charnames.pm [edit]
[-] vmsish.pm [edit]
[-] XSLoader.pm [edit]
[-] Memoize.pm [edit]
[-] FileCache.pm [edit]
[-] _charnames.pm [edit]
[-] filetest.pm [edit]
[-] FileHandle.pm [edit]
[-] base.pm [edit]
[-] overload.pm [edit]
[-] NEXT.pm [edit]
[+] ExtUtils
[-] Internals.pod [edit]
[-] Test.pm [edit]
[-] deprecate.pm [edit]
[-] DBM_Filter.pm [edit]
[-] less.pm [edit]
[+] pod
[+] Pod
[-] feature.pm [edit]
[-] UNIVERSAL.pm [edit]
[-] overloading.pm [edit]
[-] Safe.pm [edit]
[-] utf8.pm [edit]
[+] warnings
[-] perl5db.pl [edit]
[+] IO
[+] Devel
[-] autouse.pm [edit]
[+] CPAN
[-] Symbol.pm [edit]
[+] Net
[-] fields.pm [edit]
[-] open.pm [edit]
[-] meta_notation.pm [edit]
[-] English.pm [edit]
[-] PerlIO.pm [edit]
[+] ..
[+] Memoize
[-] locale.pm [edit]
[-] blib.pm [edit]
[-] FindBin.pm [edit]
[+] Class
[-] integer.pm [edit]
[+] B
[-] DirHandle.pm [edit]
[-] CORE.pod [edit]
[-] sigtrap.pm [edit]
[+] File
[-] AnyDBM_File.pm [edit]
[+] Time
[+] Attribute
[+] DBM_Filter
[-] Thread.pm [edit]
[+] overload
[+] Config
[-] DB.pm [edit]
[+] Tie
[-] Benchmark.pm [edit]
[-] vars.pm [edit]
[+] unicore
[-] subs.pm [edit]
[-] AutoSplit.pm [edit]
[-] warnings.pm [edit]
[+] Search
[+] IPC
[+] Unicode
[-] strict.pm [edit]
[-] diagnostics.pm [edit]
[+] vendor_perl
[-] AutoLoader.pm [edit]
[+] I18N
[-] dumpvar.pl [edit]
[+] encoding
[+] Getopt
[-] if.pm [edit]
[-] SelfLoader.pm [edit]
[-] sort.pm [edit]
[+] Text