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Old 01-29-2011, 05:27 AM
TANIGUCHI Takaki
 
Default Bug#611422: ITP: libmath-base85-perl -- Perl extension for base 85 numbers, as referenced by RFC 1924

Package: wnpp
Owner: takaki@debian.org
Severity: wishlist

* Package name : libmath-base85-perl
Version : 0.2
Upstream Author : Tony Monroe
* URL or Web page : http://cpan.org/
* License : Perl
Description : Perl extension for base 85 numbers, as referenced by RFC 1924
RFC 1924 describes a compact, fixed-size representation of IPv6 addresses
which uses a base 85 number system. Math::Base85 handles some of the uglier
details of it.
.
The base 85 numbers (from 0 to 84) are as follows:
.
0..9 A..Z a..z ! # $ % & ( ) * + - ; < = > ? @ ^ _ ` { | } ~
.
At the moment, there's not much in this module. But it should be sufficient
for the purposes of RFC 1924.
.
This module has a variable called $Math::Base85::base85_digits, which is a
string containing the digits of the base 85 alphabet from lowest (0) to
highest (~), in that order.



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Old 01-29-2011, 05:45 PM
Niko Tyni
 
Default Bug#611422: ITP: libmath-base85-perl -- Perl extension for base 85 numbers, as referenced by RFC 1924

On Sat, Jan 29, 2011 at 03:27:54PM +0900, TANIGUCHI Takaki wrote:
> Package: wnpp
> Owner: takaki@debian.org
> Severity: wishlist
>
> * Package name : libmath-base85-perl
> Version : 0.2
> Upstream Author : Tony Monroe
> * URL or Web page : http://cpan.org/
> * License : Perl
> Description : Perl extension for base 85 numbers, as referenced by RFC 1924
> RFC 1924 describes a compact, fixed-size representation of IPv6 addresses
> which uses a base 85 number system. Math::Base85 handles some of the uglier
> details of it.

Do you really have a use case for this?

RFC 1924 is an April 1st one, and I've never seen anybody actually use
the base85 representation of IPv6 addresses anywhere.

(In case somebody wants a quick try, ipv6calc supports it:
% ipv6calc -O base85 2607:f8f0:610:4000:214:38ff:feee:b65a
No input type specified, try autodetection...found type: ipv6addr
B7RDhRib#Y+VwlwuPBOG
)
--
Niko Tyni ntyni@debian.org


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Old 01-29-2011, 07:43 PM
"brian m. carlson"
 
Default Bug#611422: ITP: libmath-base85-perl -- Perl extension for base 85 numbers, as referenced by RFC 1924

On Sat, Jan 29, 2011 at 08:45:58PM +0200, Niko Tyni wrote:
> Do you really have a use case for this?

It looks like this is not generic enough, but if it were, it could be
used for PostScript and PDF, which can use Ascii85. The printable
characters used there are different, though.

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brian m. carlson / brian with sandals: Houston, Texas, US
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