(Excel) XML Inclusive Canonicalization

Demonstrates how to convert XML to the Inclusive XML Canonicalization form as specified in http://www.w3.org/TR/xml-c14n/

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' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

' The XML digital signature verification class provides utility methods for
' XML canonicalization.  This example demonstrates how to do inclusive XML canonicalization.

Dim http As Chilkat.Http
Set http = Chilkat.NewHttp
Dim sbXml As Chilkat.StringBuilder
Set sbXml = Chilkat.NewStringBuilder
Dim canon As Chilkat.XmlDSig
Set canon = Chilkat.NewXmlDSig

' Use inclusive XML canonicalization.

canonVersion = "C14N"

withComments = False


url = "https://www.chilkatsoft.com/exampleData/c14n/test7.xml"

success = http.QuickGetSb(url,sbXml)

' This is the input XML:
' The XML comment is referring to when exclusive XML canonicalization is applied.  With inclusive canonicalization, the namespace nodes
' are kept, as we'll see below..

' <doc>
' <!-- A namespace node N is ignored if the nearest ancestor element of the node's parent element that is in the node-set has a namespace node in the node-set with the same local name and value as N. -->
' 	<animal xmlns:aa="https://www.animal.com/">
' 		<reptile xmlns:bb="https://www.reptile.com/">
'   			<lizard xmlns="" type="african fat tailed" abc="xyz" xmlns:aa="https://www.animal.com/" />
'   			<snake type="poisonous rattler" xmlns:bb="https://www.reptile.com/" >
'   			</snake>
'   		</reptile>
'   	</animal>
' </doc>


xmlInclCanon = canon.CanonicalizeXml(sbXml.GetAsString(),canonVersion,withComments)
Debug.Print xmlInclCanon

' The C14N (inclusive) canonicalization is:

' <doc>
' 
' 	<animal xmlns:aa="https://www.animal.com/">
' 		<reptile xmlns:bb="https://www.reptile.com/">
'   			<lizard abc="xyz" type="african fat tailed"></lizard>
'   			<snake type="poisonous rattler">
'   			</snake>
'   		</reptile>
'   	</animal>
' </doc>

' To see the difference, let's do exclusive canonicalization..
canonVersion = "EXCL_C14N"


xmlExclCanon = canon.CanonicalizeXml(sbXml.GetAsString(),canonVersion,withComments)
Debug.Print xmlExclCanon

' // The C14N (exclusive) canonicalization is:
' 
' <doc>
' 
' 	<animal>
' 		<reptile>
'   			<lizard abc="xyz" type="african fat tailed"></lizard>
'   			<snake type="poisonous rattler">
'   			</snake>
'   		</reptile>
'   	</animal>
' </doc>