[DVIPDFMx] hyperxmp and (x)dvipdfmx

[Pablo Rodríguez]

Hi there,

I have been trying to use hyperxmp to include XMP metadata in a XeLaTeX
generated file.

Due to the lack of proper knowledge (this is actually all Greek to me
;-)), I had to introduce the following conditional in the command that
embeds the XMP file (code below).

I have a couple of questions:

Is the code included between \ifxetex ... \else right? (I mean, it works
for me, but I don't know what it does.)

Is there any better way to detect if hyperref is using the dvipdfmx or
dvipdfm driver?

Thanks for your help,


Pablo


\newcommand*{\hyxmp at embed@packet at dvipdfm}{%
\ifxetex{%
  \hyxmp at string@len{\hyxmp at xml}%
  \special{pdf:stream @hyxmp at Metadata (\hyxmp at xml)
    <<
      /Type /Metadata
      /Subtype /XML
    >>
  }%
  \special{pdf:put @catalog
    <<
      /Metadata @hyxmp at Metadata
    >>
  }%
}
\else
\hyxmp at string@len{\hyxmp at xml}%
  \special{pdf: object @hyxmp at Metadata
    <<
      /Type /Metadata
      /Subtype /XML
      /Length \the\@tempcnta
    >>
    stream^^J\hyxmp at xml endstream%
  }%
  \special{pdf: docview
    <<
      /Metadata @hyxmp at Metadata
    >>
  }%
\fi
}