The R Project SVN R

#! /bin/sh

##

## Diff  ``without R version''

## usage: Rdiff from-file to-file exitstatus

## from-file equal to `-' means STDIN

ffile=${1}

tfile=${2}

exitstatus=${3}

## sed script to get rid of the startup message

script='/^R : Copyright/,/quit R.$/{d;}'

## egrep pattern to get rid of some more???

pattern='(^Number of.*:|^Time '

if test -n "`echo ${ffile} | grep primitive-funs`"; then

  pattern=${pattern}'|^\[1\] [19][0-9][0-9])'

else

  pattern=${pattern}')'

fi

tmpfile=${TMPDIR-/tmp}/${ffile}-d.${$}

if test ${ffile} = '-' ; then 

  ffile=''

fi

sed -e "${script}" ${ffile} | egrep -v "${pattern}" > ${tmpfile}

(sed -e "${script}" ${tfile} | \

  egrep -v "${pattern}" | \

  diff -bw ${tmpfile} - ) && exitstatus=0

rm -f ${tmpfile}

exit ${exitstatus}