[R] Template Engine Package for R?

[Jason Rupert]

Related to the posting below, by any chance is there a "Template Engine" package for R? 

http://en.wikipedia.org/wiki/Template_processor

This may make this type of editing much easier?  Maybe...

Thanks again.



--- On Wed, 4/8/09, Jason Rupert <jasonkrupert at yahoo.com> wrote:

> From: Jason Rupert <jasonkrupert at yahoo.com>
> Subject: Re: [R] R File I/O Capability - Writing output to specific lines of existing file
> To: "jim holtman" <jholtman at gmail.com>
> Cc: R-help at r-project.org
> Date: Wednesday, April 8, 2009, 11:26 PM
> Darn.
> 
> I was afraid of this.  Always kind of weak when it comes to
> file I/O approaches, so I guess I will have to stretch and
> try to put something together.   
> 
> Yeah.  The input flat text file is about 600 lines long.  I
> will be replacing about 200.  I already have the template
> for those 200 lines.  I guess I will just need to read down
> to line 400 and replace until line 600.  
> 
> Thanks again for all the insights regarding this. 
> 
> 
> 
> --- On Wed, 4/8/09, jim holtman <jholtman at gmail.com>
> wrote:
> 
> > From: jim holtman <jholtman at gmail.com>
> > Subject: Re: [R] R File I/O Capability - Writing
> output to specific lines of  existing file
> > To: jasonkrupert at yahoo.com
> > Cc: R-help at r-project.org
> > Date: Wednesday, April 8, 2009, 8:02 PM
> > You can always read in the initialization file, make the
> > updates to it and then write it back out.  If it is a text 
> > file, it would be very hard to write into the middle of 
> > it since there is no structure to the file.  You can read 
> > it in as a table (read.table) or just as lines
> > (readLines) and the make any changes you want.  You can use 
> > regular expressions if you want to put something in the 
> > middle of one of the lines you have read in.
> > 
> > On Wed, Apr 8, 2009 at 10:13 AM, Jason Rupert
> > <jasonkrupert at yahoo.com> wrote:
> > >
> > Currently I am using the R "write"command
> > to output results to a *.txt file and then copying those
> > results into an initialization file.  In an attempt to
> > continue to automate the process I would like to have R
> > write to the location in the existing initialization file,
> > instead of me copying the data over.
> > By any chance are there any R commands to help?
> > Primarily, I will be using Windows, and the
> > initialization file is a simple flat file, i.e. not XML or
> > binary.
> >
> > I looked at:
> > (a)
> http://www.stat.ucl.ac.be/ISdidactique/Rhelp/library/R.io/html/00Index.html
> > (b) http://search.r-project.org/cgi-bin/namazu.cgi?query=File+I%2FO&max=100&result=normal&sort=score&idxname=functions&idxname=Rhelp08
> >
> > But, this did not appear to provide the functionality
> > to edit an existing file by adding information to the middle
> > of the file.
> >
> > Thank you again for any help and insight.
> >