XML/SGML objects
OmniMark provides powerful query facilities for retrieving information about the current SGML or XML context. The following information is available:
- the value of the APPINFO string in the SGML declaration, if specified (only available when processing SGML documents)
- the name of the DOCTYPE element of the current document instance
- the name of any currently open elements
- the attribute values of any of the currently open elements
- the names of any elements which immediately preceded the currently open elements
- the type of content that immediately preceded any of the currently open elements
- the public identifier, system identifier, notation, or the data attributes of any entity referenced by an ENTITY attribute or any currently open element
- the public identifier or system identifier of any notation referenced by a NOTATION attribute of any currently open element
- the name of the current external text or data entity, if any
- the public identifier, system identifier, notation, or the data attributes of the current external text or data entity
In addition, OmniMark also provides:
- a data structure that represents the stack of currently open elements, allowing you to make complex queries about, and to iterate over all open elements
- data structures that represent the declared and specified attributes of each currently open element, allowing you to make complex queries about, and to iterate over the attributes