BIND 10 #2430: support $GENERATE in dns::MasterLoader

[BIND 10 Development]

#2430: support $GENERATE in dns::MasterLoader
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            Reporter:  jinmei        |                        Owner:
                Type:  task          |  UnAssigned
            Priority:  medium        |                       Status:
           Component:  libdns++      |  reviewing
            Keywords:                |                    Milestone:
           Sensitive:  0             |  bind10-1.2-release-freeze
         Sub-Project:  DNS           |                   Resolution:
Estimated Difficulty:  5             |                 CVSS Scoring:
         Total Hours:  0             |              Defect Severity:  N/A
                                     |  Feature Depending on Ticket:
                                     |  loadzone-ng
                                     |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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Changes (by muks):

 * owner:  muks => UnAssigned
 * status:  assigned => reviewing


Comment:

 Up for review.

 Some notes:

 * It does not support relative names in the RHS (what becomes the RDATA).
 Names have to be formatted to be absolute.
 * There are some corner cases with width in nibble mode ('N' and 'n').
 What happens when the width is not filled? In this case, the nibble
 generator would trail the generated string (from LHS) with a ".", but we
 consider it as relative to the origin anyway (otherwise, the name could be
 out of zone).
 * In the previous case, note that such concatenation with origin means
 that width N and width N-1 result in the same LHS Name when N is even.

-- 
Ticket URL: <http://bind10.isc.org/ticket/2430#comment:3>
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