Re: [osinfo-db] install-script, opensuse: Add omit-xml-declaration to the output format

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On Fri, Apr 21, 2017 at 11:20:05AM +0200, Fabiano Fidêncio wrote:
> On Fri, Apr 21, 2017 at 11:16 AM, Daniel P. Berrange
> <berrange@xxxxxxxxxx> wrote:
> > On Fri, Apr 21, 2017 at 11:06:42AM +0200, Fabiano Fidêncio wrote:
> >> On Fri, Apr 21, 2017 at 10:45 AM, Daniel P. Berrange
> >> <berrange@xxxxxxxxxx> wrote:
> >> > On Fri, Apr 21, 2017 at 10:37:37AM +0200, Fabiano Fidêncio wrote:
> >> >> Without this change the output got from the command-line template will
> >> >> look like "<?xml version=1> autoyast=device://sda/autoinst.xml" while
> >> >> what we actually expect is just "autoyast=device://sda/autoinst.xml".
> >> >
> >> > This description looks a bit odd - if I run
> >> >
> >> >   $ osinfo-install-script -p jeos  opensuse42.2
> >> >
> >> > it generates autoinst.xml, which contains
> >> >
> >> > <?xml version="1.0"?>
> >> > <profile xmlns:config="http://www.suse.com/1.0/configns"; xmlns="http://www.suse.com/1.0/yast2ns";>
> >> >   <bootloader>
> >> >     <device_map config:type="list">
> >> > ....snip....
> >> >
> >> > where is this
> >> >
> >> >  "<?xml version=1> autoyast=device://sda/autoinst.xm"
> >> >
> >> > data that you're referring to ?
> >>
> >> You'll get it once you call
> >> osinfo_install_script_generate_command_line_for_media().
> >> The returned result depends on the output type set in for the XML file.
> >>
> >> So, instead of getting the expected
> >> "autoyast=device://sda/autoinst.xml" you'll get  "<?xml version=1>
> >> autoyast=device://sda/autoinst.xml".
> >>
> >> We never been hit by this because all the other install-scripts we
> >> have are not XML files, but pure text files, while the openSUSE/SLES
> >> one is actually a XML.
> >
> > Urgh, this approach to generating multiple different documents from
> > the single xsl template is broken by design :-(
> >
> > You're lucky that omit-xml-declaration works here - the XSL code is
> > still generating what it thinks is XML here - it just happens you're
> > ok since you've only needed to generate a single line.
> 
> Yep, unfortunately I was aware of this. /o\
> 
> >
> > This should have been done by having separate <template> elements,
> > so we could then have  <xsl:output method="xml"/> and
> > <xsl:output method="text"/> for the respective documents.
> 
> Do you want a libosinfo bug for this so we can work on this in the future?

Yeah, we need to figure out how to fix this - the hard bit is backcompat
support.

> And are you okay with the "workaround" for now?

Yeah.


Regards,
Daniel
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