From bolker@zoo.ufl.edu  Tue Oct  2 19:53:57 2001
From: bolker@zoo.ufl.edu (Ben Bolker)
Date: Tue, 2 Oct 2001 14:53:57 -0400 (EDT)
Subject: [Rd] calling browser in Windows
Message-ID: <Pine.LNX.4.30.0110021342140.30794-100000@bolker.zoo.ufl.edu>


  I'm working on the interface to LiveGraphics3D (Java applet for dynamic
3D graphics) that I mentioned earlier on the list, and I've hit a
cross-platform problem.
  I want to allow the option of popping up a browser or opening the file
in a browser automatically.  On Unix, the following (stolen from
help.start()) works:

system(paste(browser, " -remote \"openURL(", url, ")\" 2>/dev/null || ",
               browser, " ", url, " &", sep = ""))

If I want to do this in Windows, options("browser") is NULL.  (For now I'm
hardcoding browser to "C:/PROGRA~1/INTERN~1/IEXPLORE.EXE", but this
clearly isn't a general solution.) The syntax of the call is also
different (IE at least appears to require just the file name, "file:/"
just seems to confuse it).  I don't know how to start a browser in the
background, or do the equivalent of -remote ...  help.start() is
considerably more internalized on Windows, so I'm not getting much useful
there.

  Here's what I'm doing now:

  mach <- machine()
  if (mach=="Unix") {
    url <- paste("file:",file.path(getwd(),fn),sep="")
    system(paste(browser, " -remote \"openURL(", url, ")\" 2>/dev/null ||
",
                 browser, " ", url, " &", sep = ""))
  }
  else if (mach=="Windows") {
    system(paste(browser,file.path(getwd(),fn)))
  }
}


  Is there a different idiom I should be using for Windows?
  I suppose it's all completely different for the Mac too ...
  Might it be possible to standardize this interface?

 thanks,
  Ben Bolker

--
318 Carr Hall                                bolker@zoo.ufl.edu
Zoology Department, University of Florida    http://www.zoo.ufl.edu/bolker
Box 118525                                   (ph)  352-392-5697
Gainesville, FL 32611-8525                   (fax) 352-392-3704

-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-devel-request@stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._


[Rd] calling browser in Windows
Ben Bolker