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stag-autoschema.pl - Man Page

writes the implicit stag-schema for a stag file


  stag-autoschema -w sxpr sample-data.xml

  stag-autoschema -dtd sample-data.xml


Takes a stag compatible file (xml, sxpr, itext), or a file in any format plus a parser, and writes out the implicit underlying stag-schema

stag-schema should look relatively self-explanatory.

Here is an example stag-schema, shown in sxpr syntax:

    (name "s"
     (address_type "s")
     (street "s")
     (street2? "s")
     (city "s")
     (zip? "s")))))

The database db contains zero or more persons, each person has a mandatory name and at least one address.

The cardinality mnemonics are as follows:


1 or more


0 or one


0 or more

The default cardinality is 1


-p|parser FORMAT

FORMAT is one of xml, sxpr or itext, or the name of a perl module

xml assumed as default


exports schema as DTD

-w|writer FORMAT

FORMAT is one of xml, sxpr or itext, or the name of a perl module, OR DTD

The default is sxpr

note that stag schemas exported as xml will be invalid xml, due to the use of symbols *, +, ? in the node names


not event based - memory usage becomes exhorbitant on large files; prepare a small sample beforehand

Pod Errors

Hey! The above document had some coding errors, which are explained below:

Around line 137:

Expected text after =item, not a bullet


2024-01-25 perl v5.38.2 User Contributed Perl Documentation