>I need a fast way to convert relatively large ascii strings to their "escaped" hex equivalent for use within dynamically generated javascript. Here I mean where "ABC" becomes "%41%42%43". This will be used as a support routine on a web server for generating portions of web pages that are intentionally obfuscated. It needs to be fast and callable from a VFP COM DLL that is working in conjunction with an ASP app to generate the web pages.
>
>The STRCONV function with opcode of 15 is very close in that it produces an ascii to hex conversion, but it does not include the javascript escape character "%".
>
>var cNew="";
>for (var i=0; i> cNew+= "%" + cStr.substr(i,2);
> }
>return unescape(cNew);
>}
>
>Thanks very much for any suggestions.

Why don't you write a partially optimzed vfp or javascript solution ? The c/c++ version will be faster, but not by that far a margin than if you use a worst case approach similar to the above<g>. If you are already unsure how to proceed with a fll, how will it be if you want to add/change a few more functions with similar functionality? If possible, keep it the language domains you know. I strongly doubt that implementing a transformation like that will be the bottleneck of a vfp-web-app if the conversion is coded in vfp.

In nearly all dynamically memory allocating languages you run into string/memory thrashing. Depending on the size of the strings I'ld try a few simple tricks in vfp first - for instance in MB-sized strings check writing to allocated memory or a file or in intermediate size inplement something similar as the CLR to always append groups of characters in a single line.

HTH

thomas