On Mon, Apr 13, 2015 at 11:10 AM, jcbollinger <john.bollin...@stjude.org> wrote:
> You're already generating a compound search key (although it's not strictly
> necessary for what you're doing so far); a reasonable solution would be a
> compound sort key that captures the IP address (if any) as the first part,
> and the rest of the hash key as a second part. Here's a way to approach it
> with the help of a Ruby regex:
>
> <%
> require 'ipaddr'
> if @bind
> @bind.sort_by { |address_port, bind_params|
> md = /^((\d+)\.(\d+)\.(\d+)\.(\d+))?(.*)/.match(address_port)
> [ (md[1] ? md[2..5].inject(0){ |addr, octet| (addr << 8) + octet.to_i }
> : -1), md[6] ]
> }.map do |address_port, bind_params|
> -%>
> bind <%= address_port -%> <%= Array(bind_params).join(" ") %>
> <%
> end
> else
> -%>
>
>
> In the sort_by() block, variable 'md' captures the match data for matching
> the given regex against the 'address_port' string. The regex will match any
> string; the important part is the capturing groups. If the string starts
> with a dotted-quad address then the whole address is captured as group 1,
> and the segments are captured as groups 2 - 5. Whatever is not matched as a
> dotted-quad address is always captured as group 6. The dotted-quad match is
> all-or-nothing; either four segments will be captured or none. The sort key
> is then formed as a two-element array: the first element is -1 if no address
> is given, else the 4-byte integer IP address, and the second element is the
> string tail.
John,
That looks great! I'll give that a try. (Though possibly after a
delay... I have some higher priority issues on my plate)
Tom
--
Email: t...@whatexit.org Work: tlimonce...@stackoverflow.com
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