[R] Regex matching that gives byte offset?

Prof Brian Ripley ripley at stats.ox.ac.uk
Wed Oct 28 16:29:00 CET 2009

Do you mean like regexpr() (on the same help page)?

Depending on your locale, you might actually prefer the character 
offset: if you want to match in a MBCS and have byte offsets you will 
need to work a bit harder if useBytes=TRUE is not sufficient for you.

On Wed, 28 Oct 2009, Johannes Graumann wrote:

> Hi,
> Is there any way of doing 'grep' ore something like it on the content of a
> text file and extract the byte positioning of the match in the file? I'm
> facing the need to access rather largish (>600MB) XML files and would like
> to be able to index them ...
> Thanks for any help or flogging,
> Joh
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

Brian D. Ripley,                  ripley at 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

More information about the R-help mailing list