// The output is not guaranteed to be well-formed XML, so the
// serialized string is returned. Consideration is being given
// to returning a slice of bytes and encoding information.
func (style *Stylesheet) Process(doc *xml.XmlDocument, options StylesheetOptions) (out string, err error) {
// lookup output method, doctypes, encoding
// create output document with appropriate values
output := xml.CreateEmptyDocument(doc.InputEncoding(), doc.OutputEncoding())
// init context node/document
context := &ExecutionContext{Output: output.Me, OutputNode: output, Style: style, Source: doc}
context.Current = doc
context.XPathContext = doc.DocXPathCtx()
// when evaluating keys/global vars position is always 1
context.XPathContext.SetContextPosition(1, 1)
start := doc
style.populateKeys(start, context)
// eval global params
// eval global variables
for _, val := range style.Variables {
val.Apply(doc, context)
}
// set xpath context
// process nodes
style.processNode(start, context, nil)
out, err = style.constructOutput(output, options)
// reset anything required for re-use
return
}
