Generic Methods for SAX callbacks

This is a collection of generic functions for which one can write methods so that they are called in repsonse to different SAX events. The idea is that one defines methods for different classes of the .state argument and dispatch to different methods based on that argument. The functions represent the different SAX events.

Usage

startElement.SAX(name, atts, .state = NULL)
endElement.SAX(name, .state = NULL)
comment.SAX(content, .state = NULL)
processingInstruction.SAX(target, content, .state = NULL)
text.SAX(content, .state = NULL)
entityDeclaration.SAX(name, base, sysId, publicId, notationName,  .state = NULL)
.InitSAXMethods(where = "package:XML")

Arguments

name: the name of the XML element or entity being declared
atts: named character vector of XML attributes
content: the value/string in the processing instruction or comment
target: the target of the processing instruction, e.g. the R in <?R....>
base: x
sysId: the system identifier for this entity
publicId: the public identifier for the entity
notationName: name of the notation specification
.state: the state object on which the user-defined methods should dispatch.
where: the package in which the class and method definitions should be defined. This is almost always unspecified.

Value

Each method should return the (potentially modified) state value.

References

https://www.w3.org/XML/, http://www.xmlsoft.org

Author

Duncan Temple Lang

Note