Sort IP List

Mike Bonner bonnmike at gmail.com
Fri Jun 29 20:42:53 EDT 2018


You all are just too darn smart. great solution.

On Fri, Jun 29, 2018 at 5:54 PM Alex Tweedly via use-livecode <
use-livecode at lists.runrev.com> wrote:

> Why not just do it directly (avoid the function call) ...
>
> function sortIPList2 pIPList
>     set the itemdelimiter to "."
>     try
>        sort lines of pIPList ascending numeric \
>              by (item 1 of each * 16777216) + \
>              (item 2 of each *65536) + \
>              (item 3 of each *256) + \
>              (item 4 of each )
>     catch theError
>        breakpoint
>     end try
>     return pIPList
> end sortIPList2
>
> or if you prefer ...
>     by item 4 of each + 256 * ( item 3 of each + 256 * (item 2 of each +
> 256 * item 1 of each ))
> ...
>
> Alex.
>
> On 30/06/2018 00:41, hh via use-livecode wrote:
> > Your IP addresses [0-255].[0-255].[0-255].[0-255]
> > are the hex IP numbers converted to base 256.
> > So you may try the following sorting function that
> > converts the IPs from base 256 to base 10 (decimal).
> >
> > function ip2dec x
> >    set itemdel to "."
> >    repeat with i=0 to 3
> >      add (item 4-i of x)*256^i to y
> >    end repeat
> >    return y
> > end ip2dec
> >
> > on mouseUp
> >    put fld "ips" into s
> >    sort s numeric by ip2dec(each) # <----
> >    put s into fld "out"
> > end mouseUp
> >
> >
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