CoffeePress, an Invisible XML step

This is an an XML Calabash 1.x extension step that implements an Invisible XML processor.

<p:declare-step type="cx:invisible-xml">
  <p:input port="grammar" sequence="true"/>
  <p:input port="source" primary="true"/>
  <p:input port="parameters" kind="parameter"/>
  <p:output port="result"/>
  <p:option name="fail-on-error" select="'true'"/>
</p:declare-step>

If a grammar is not provided, the Invisible XML specification grammar is used. (In other words a parser without a grammar parses Invisible XML documents.)

If the grammar is provided and it is and XML document with a root element of <ixml>, it is assumed to be the XML version of an Invisible XML grammar. Any other input is assumed to be a wrapper around a grammar in the Invisible XML text format; the parser is constructed from the string value of that input.

The string value of the source input is parsed.

The result is the XML document that results from the parse. If the result is ambiguous, one of the parses is returned. If the input cannot be parsed, then if fail-on-error is true, an exception is thrown. If fail-on-error is false, an XML representation of the failed parse appears on result.

The parameter can be any of the parser options described in the CoffeeSacks documentation, except that the choose-alternative function is not supported at this time.