Hnngngng ... it's a misnomer
AFAIS
- it's only operating on UCS-2 and ignoring the planes above
- it's ignoring whitespaces by it's own definition of whitespace
- it's avoiding some control characters
So not just a simple rotate by 0x8000 = 2^15!
One needs
- an ordered list of all allowed characters.
- divide them by two
- map them in a lookup hash with 2^16 entries
- the ignored ones map to themself
This JS implementation should be a good start for a Perl port
https://github.com/rottytooth/rot8000/blob/main/rot8000.js
You can use ord and chr to convert to codepoint and back
HTH!
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|