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jbclements / sxml

Oleg Kiselyov's sxml/ssax/sxpath/sxslt libraries (racket-specific)

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Suppressing sxml/ssax warnings

sschwarzer opened this issue · comments

commented

In case anyone else runs into this ...

Parsing an SVG file with ssax:xml->sxml gave me the warning

ssax:warn: warning at position 137: DOCTYPE DECL svg http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd found and skipped

I couldn't find an "official" way to suppress the warning, short of redirecting current-output-port or current-error-port. Looking around in the sxml source code eventually led me to

(require
  ; For `current-sxml-warning-handler`
  sxml/ssax/errors-and-warnings)

...

  (parameterize ([current-sxml-warning-handler (lambda args void)])
    (ssax:xml->sxml port '()))

I don't know if there should be an official API for this. Maybe it's enough to document current-sxml-warning-handler and provide it under a nicer module path, for example sxml.

commented

Yes, this kind of thing does not surprise me; the sxml library is written to run across multiple scheme implementations, so this kind of issue is definitely present.

I like your proposed solution. Any interest in making a pull request?

commented

I like your proposed solution.

I assume you're referring to exposing and documenting current-sxml-warning-handler, not redirecting current-output-port or current-error-port?

Any interest in making a pull request?

Kind of yes, but that may take a while. At the earliest after Racketfest. So I won't be upset if you do it yourself. :-)