Re: [xsl] xdiff. XML file comparison using xslt

[David Carlisle <davidc@xxxxxxxxx>]

On 10/04/2010 12:49, Dave Pawson wrote:
> 2010-04-10T12:39:24Z
> DaveP ideas on what an xdiff should do.
>
> HL requirement, to compare two XML files as being 'equal', using XSLT.
>
> KISS
>   compare doc1, doc2
> 1. traverse the tree of doc1 in its entirity
> 2. for each element node:
>       have access to doc2, same xpath access
>       # children is the same
>         order of children is the same
>       # attributes is the same (irrespective of order)
> 3. for each attribute node
>       have access to doc2, same xpath access
>       check normalized space value is the same for doc2
> 4  for each text node
>        have access to doc2, same xpath access
>        check normalized space value is the same for doc2
> 5. for each comment - ignore
> 6. for each PI
>        have access to doc2, same xpath access
>        check name is the same
>        check normalized space value is the same for doc2
>
> At first error, report both node contents, xpath [line number]
>         halt processing.
>
> For any node, inability to access the matching node in doc2
> is deemed a failure.
>
>
> 'How' to be based on this.
>
> Thoughts?
>
>
>
> regards

isn't that more or less deep-equal, perhaps one of the saxon-extended 
variants?

David