On 6-1-2010 2:33, Zhichu Chen wrote:

...

Hi,

I've written a very old module which used a lot of pdf primitives like \pdfescapehex and \pdfescapename etc. and it turns out not they don't work in mkiv. So I just want to know are there any alternatives?

just lua code as placeholders for primitives will not show up in context mkiv

\startluacode    local texsprint, ctxcatcodes = tex.sprint, tex.ctxcatcodes    local gsub, format, byte = string.gsub, string.format, string.byte    function commands.hexify(str)        texsprint(ctxcatcodes,(gsub(str,".",function(s) return format("%0X",byte(s)) end)))    end \stopluacode

\long\def\hexify#1{\ctxlua{commands.hexify([[#1]])}}

\hexify{I wonder why this is needed.}

btw, if your old module produces pdf and uses other \pdf... primitives it's unlikely to work with mkiv anyway so you'd better check if it's still needed Yes, \pdffilemoddate, \pdffilesize, \pdfmdfivesum are kind of disabled as well, I'm not familiar with lua at all, so I don't know how to replace them with the lua version. I did change your code format("%0X",byte(s)) with

Thank you Hans, On Wed, Jan 6, 2010 at 4:38 PM, Hans Hagen wrote: format("%s",byte(s)) and it worked as \pdfescapename. I hope I'm not too wrong. Anyway, my ancient module just write directly with pdfobj, I just commented the /ModDate parameters and seems just fine now. I think I really need to learn some lua. Thank you again for your time.

Hans

-----------------------------------------------------------------                                          Hans Hagen | PRAGMA ADE              Ridderstraat 27 | 8061 GH Hasselt | The Netherlands     tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com                                             | www.pragma-pod.nl -----------------------------------------------------------------

-- Best Regards Chen ---------------------------------------------------------------- Zhi-chu Chen | Shanghai Synchrotron Radiation Facility No. 2019 | Jialuo Rd. | Jiading | Shanghai | P.R. China tel: 086 21 5955 3405 | zhichu.chen.googlepages.com | www.sinap.ac.cn ----------------------------------------------------------------