[XeTeX] documentation on programming language (in macros)?

[Bernhard Barkow]

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On 26. Feb 2005, at 6:31, Roger Hart wrote:
> I certainly very much appreciate all the extremely generous and expert 
> help that I've received with my many very ignorant and simple novice 
> questions about latex etc.  So please let me apologize for asking one 
> more, and I do hope I may forgiven for stating this, since I really 
> don't know anything about programming in TeX and LaTeX at this point, 
> but it seems to me that making ps4pdf work with xelatex should be 
> pretty trivial exercise:
>
> 1)  add a section of code that tests to see if the environment is 
> xelatex, and if it is, use \XeTeXpdffile, instead of the corresponding 
> pdflatex command, to insert the contents of myfilename-pics, one page 
> at a time;
>
> 2) if the environment is not xelatex, then process according to 
> ps4pdf, either creating a -pics file under latex + dvips +ps2pdf, and 
> even allowing the usual processing under pdflatex.
>
> That is, something like,
>
> case of xelatex {
> %set definitions
>      \newcounter{pdfpage}
>      \setcounter{pdfpage}{1}
> %redefine ps4pdf for xelatex
> \renewcommand{ps4pdf}{
>      \XeTeXpdffile "scratch-xy-pics.pdf" page pdfpage
>      \stepcounter{pdfpage}
>      }
> }
> case of latex + dvips +ps2pdf {
>      process what is already in ps4pdf
> }
> case of pdftex{
>      process what is already in ps4pdf
> }
>
>
> Or even,
>
> if xelatex {
> insert pages as above
> }
> else
> \usepackage{ps4pdf}
> endif
>
I don't know about ps4pdf; I never used it, because I decided to use 
pdftex exclusively some time ago, and if really necessary I keep my 
graphics files as both eps and pdf. However, checking for XeTeX works 
like this:

\ifx\XeTeXversion\undefined
	\newcommand{\testb}{This is not XeTeX!}
\else
	\newcommand{\testb}{This is XeTeX \number\XeTeXversion\XeTeXrevision!}
\fi

HTH,

Bernhard Barkow


____________________________________________________
_________________________________ Bernhard Barkow __
__                                                __
__ mail bb at creativeeyes.at __ www.creativeeyes.at __
__ Phone  +43 699 12660415 __ Fax   +43 1 8775334 __
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