eblondel/zen4R

Issue reading an HTML file after loading zen4R

maelle opened this issue · 7 comments

maelle commented

👋 here!

I am seeing a surprising error message when reading an HTML file with xml2 but only after loading zen4R,

> xml2::read_html("<html><body><nav>bla</nav></body></html>")
{html_document}
<html>
[1] <body><nav>bla</nav></body>
> library("zen4R")
> xml2::read_html("<html><body><nav>bla</nav></body></html>")
librdf error - HTML parser error: Tag nav invalid
{html_document}
<html>
[1] <body><nav>bla</nav></body>

Any idea what might be the reason? Thank you!

r-lib/xml2#427

eblondel commented

Can you repeat the exercise but instead of zen4R, use atom4R package, and next try to do it loading rdflib. I suspect this would be the right target. Thanks

eblondel commented

I can't reproduce the issue on my side

maelle commented 
> xml2::read_html("<html><body><nav>bla</nav></body></html>")
{html_document}
<html>
[1] <body><nav>bla</nav></body>
> library("atom4R")
> xml2::read_html("<html><body><nav>bla</nav></body></html>")
librdf error - HTML parser error: Tag nav invalid
{html_document}
<html>
[1] <body><nav>bla</nav></body>

and

> xml2::read_html("<html><body><nav>bla</nav></body></html>")
{html_document}
<html>
[1] <body><nav>bla</nav></body>
> library("rdflib")
> xml2::read_html("<html><body><nav>bla</nav></body></html>")
{html_document}
<html>
[1] <body><nav>bla</nav></body>

so I still see the message with atom4R but not rdflib.

maelle commented

FWIW I am on Ubuntu.

eblondel commented

Ok thanks so first it has nothing to deal with zen4R, not even atom4R itself. However, in atom4R we load DCMI vocabularies and this is done through rdflib package function rdf_query. The call to this function is causing the error you see. You could try to run a rdf query and see if you get similar error

maelle commented

ah, indeed, thank you! Over to the rdflib repo I go. 😸

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