| Convert-AnyBase documentation | Contained in the Convert-AnyBase distribution. |
Convert::AnyBase - Convert (encode/decode) numbers to and from an arbitrary base
Version 0.010
use Convert::AnyBase
# A hex encoder/decoder
my $hex = Convert::AnyBase->new( set => '0123456789abcdef', normalize => sub { lc } )
$hex->encode( 10 ) # a
$hex->encode( 100 ) # 64
$hex->decode( 4d2 ) # 1234
# A Crockford encoder/decoder (http://www.crockford.com/wrmg/base32.html)
Convert::AnyBase->new( set => ( join '', 0 .. 9, 'a' .. 'h', 'j', 'k', 'm', 'n', 'p' .. 't', 'v', 'w', 'x', 'y', 'z' ),
normalize => sub { s/[oO]/0/g; s/[iIlL]/1/g; lc }, # o, O => 0 / i, I, l, L => 1
)
Convert::AnyBase is a tool for converting numbers to and from arbitrary symbol sets.
Create a new converter for the given base. The arguments are:
set A string representing the base 'alphabet'. Each character is a different symbol for the base.
The length of the string is the base of the system. The 0-value is the first character, the
1-value is the second character, etc. For example, hexadecimal would be represented by the following:
'0123456789abcdef'
normalize A code reference for normalizing a string before decoding. The code should operate on $_
and return the sanitized string. The normalizer can be used to consistently lowercase,
uppercase, or canocalize input, etc. A normalizer for Crockford (base 32):
sub {
s/[oO]/0/g; # Translate o/O to 0
s/[iIlL]/1/g; # Translate i/I/l/L to 1
lc; # Lowercase and return the result
}
Encode <number> into a string
Decode <string> into a number
A hex converter
A decimal (string) converter
A Crockford converter
Robert Krimen, <rkrimen at cpan.org>
Please report any bugs or feature requests to bug-convert-anybase at rt.cpan.org, or through
the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Convert-AnyBase. I will be notified, and then you'll
automatically be notified of progress on your bug as I make changes.
You can find documentation for this module with the perldoc command.
perldoc Convert::AnyBase
You can also look for information at:
Copyright 2009 Robert Krimen, all rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
| Convert-AnyBase documentation | Contained in the Convert-AnyBase distribution. |
package Convert::AnyBase; use warnings; use strict;
our $VERSION = '0.010';
sub new { shift; require Convert::AnyBase::Converter; return Convert::AnyBase::Converter->new( @_ ); } { my ( $hex, $crockford, $decimal ); sub hex { return $hex || __PACKAGE__->new( set => ( join '', 0 .. 9, 'a' .. 'f' ), normalize => sub { lc } ); } sub crockford { return $crockford ||= __PACKAGE__->new( set => ( join '', 0 .. 9, 'a' .. 'h', 'j', 'k', 'm', 'n', 'p' .. 't', 'v', 'w', 'x', 'y', 'z' ), normalize => sub { s/[oO]/0/g; s/[iIlL]/1/g; lc }, ); } sub decimal { return $decimal ||= __PACKAGE__->new( set => ( join '', 0 .. 9, ) ); } }
1; # End of Convert::AnyBase