stag-autoschema.pl - writes the implicit stag-schema for a stag file
stag-autoschema.pl -w sxpr sample-data.xml stag-autoschema.pl -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:
(db
(person*
(name "s"
(address+
(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:
The default cardinality is 1
FORMAT is one of xml, sxpr or itext, or the name of a perl module
xml assumed as default
exports schema as DTD
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
