Thank you Prof Brian , Duncan . Let me try that out, Thanks, Sandip
On Tue, Jan 21, 2014 at 9:14 PM, Prof Brian Ripley <rip...@stats.ox.ac.uk>wrote: > On 22/01/2014 00:08, Duncan Murdoch wrote: > >> On 14-01-21 5:41 PM, Sandip Nandi wrote: >> >>> Hi , >>> >>> I am using C interface of R . If a unicode string is read , in what >>> format >>> I could pass it back to R ? >>> I was trying to use the following >>> >>> tpStr = ( char *)val; >>> SET_STRING_ELT(innerList , 0, mkChar(tpStr)); >>> >>> It does not work . >>> >>> If I pass it back from as RAW format to R , what package is there to read >>> it ? I mean package for interpreting RAW data . >>> >> >> There are a number of encodings for Unicode. Most Unix systems use >> UTF-8, Windows uses UTF-16 for some things, etc. >> >> If your string is known to be in UTF-8 that's easiest: just use >> mkCharCE instead of mkChar, as described in Writing R Extensions. If it >> is in UTF-16 you might have more trouble because of possible embedded 0 >> bytes. Translate to UTF-8 first using C facilities like >> WideCharToMultibyte. >> > > Which is Windows-only (and 'wide char' differs by platform, including if > it is known to be any Unicode encoding) All platforms have Riconv: see > 'Writing R Extensions'. C11 has other ways to do this, but they are not > widely implemented. > > -- > Brian D. Ripley, rip...@stats.ox.ac.uk > Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ > University of Oxford, Tel: +44 1865 272861 (self) > 1 South Parks Road, +44 1865 272866 (PA) > Oxford OX1 3TG, UK Fax: +44 1865 272595 > [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
