Date: Wed, 30 Jul 2014 17:25:09 -0700 From: Marcel Moolenaar <marcel@xcllnt.net> To: "Simon J. Gerraty" <sjg@juniper.net> Cc: Alfred Perlstein <alfred@freebsd.org>, phil@juniper.net, freebsd-arch@freebsd.org Subject: Re: XML Output: libxo - provide single API to output TXT, XML, JSON and HTML Message-ID: <06AE7354-CF5D-409F-BCAB-7CD4B728DF15@xcllnt.net> In-Reply-To: <20140730235123.AC944580A2@chaos.jnpr.net> References: <20140725044921.9F0D3580A2@chaos.jnpr.net> <CAETOPp13H7kyLy-1VJRDOsDbOh8A1MWZDxw1xHUBsxTRtMfc7g@mail.gmail.com> <20140728054217.AC1A0580A2@chaos.jnpr.net> <20140728055336.GJ50802@ivaldir.etoilebsd.net> <CAETOPp3hJB8Gj%2BPMj3N951krnNqCYiAOY-cPHxMCBy1CQXWJaQ@mail.gmail.com> <A1E63A7A-BB38-4CC3-B5EC-B251BE990572@mail.turbofuzz.com> <20140729230345.31E9B580A2@chaos.jnpr.net> <53D85495.4050408@mu.org> <20140730053446.DCE8D580A2@chaos.jnpr.net> <53D944F5.7000207@freebsd.org> <20140730194522.B58FE580A2@chaos.jnpr.net> <20140730235123.AC944580A2@chaos.jnpr.net>
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--Apple-Mail=_48265AB6-342B-4B6A-A5BE-772C31DFAA79 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=us-ascii On Jul 30, 2014, at 4:51 PM, Simon J. Gerraty <sjg@juniper.net> wrote: > This looks like the same sort of approach that Juniper used a > over a decade ago for the BSD apps to get XML out, and which we felt was > just too ugly to upstream, I don't see how we could support this. > > Unfortunately it took me a couple of years to get a few hours of Phil's > time, to come up with a neat API to avoid that #ifdef and if/else mess. > On the plus side that means it covers a lot more than just XML. > > We now have an API and library that can avoid the need to double the > cost of adding new output to apps, ie you only write to libxo's api > and it does plain TXT for you if needed. Something that any implementation should handle is that warn(3) and err(3) functions should do the right thing. More precisely: I would expect that the output of a utility when emitting some ML handles both stdout and stderr consistently. Also: I would hope that if we emit XML (for example), we can do so according to a well-defined schema. The GSoC approach seems less likely to have a good solution for those than libxo has. -- Marcel Moolenaar marcel@xcllnt.net --Apple-Mail=_48265AB6-342B-4B6A-A5BE-772C31DFAA79 Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP using GPGMail -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org iEYEARECAAYFAlPZjOUACgkQpgWlLWHuifaXRwCeLbL9tbaOdsi++lSRyt1iWTve dHsAoIOco8fBpBMa6TfW8OxC5OHqyG4N =2IhH -----END PGP SIGNATURE----- --Apple-Mail=_48265AB6-342B-4B6A-A5BE-772C31DFAA79--
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