AstroWeb procedures

Periodic updates at La Plata are done with the following suite of procedures:

update_astroweb.pl: Copies the master database in HTML format, and uses the procedures described below to sort the records and split them into separate category pages.
dtsort.pl: The primary purpose of this program is to sort resource records. Sort options include 'topzone' (sort by fully-qualified-domain-name, with fields reversed into 'JANET' order), 'protoname'(sort key concatenates the protocol name with the resource namestring) and 'name' (sort on resource namestrings). dtsort.pl executes a series of string replacement rules which put the text into a canonical form (e.g., the HTML variable 'href' is changed to 'HREF'). In addition, dtsort.pl recognizes when successive records are identical, and deletes the redundant copies. It also recognizes when records have the same URL but different text; in this case, the program merges the two records and inserts a comment about the similarity. This program uses the auxiliary file country-codes
dtsplit.pl: This program uses configuration rules given in its BEGIN section to split a file of resource records into separate pages by using the CATEGORY codes.
dtnodd.pl: This program strips the "DD" fields from resource records so that the record will be rendered as only one line (just the URL and the short name string).

The procedures have been translated into Perl with minor modifications from the original AWK implementation.