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46821 ripley 1 
#!@R_SHELL@
11515 hornik 2 
##
45264 ripley 3 
## Rdiff -- diff 'without R version'
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revision='$Rev: 47774 $'
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version=`set - ${revision}; echo ${2}`
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version="R output diff: ${R_VERSION} (r${version})
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47467 hornik 9 
Copyright (C) 2000-2008 The R Core Development Team.
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This is free software; see the GNU General Public License version 2
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or later for copying conditions.  There is NO warranty."
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47467 hornik 13 
usage="
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Usage: R CMD Rdiff FROM-FILE TO-FILE EXITSTATUS
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Diff R output files FROM-FILE and TO-FILE discarding the R startup message,
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where FROM-FILE equal to '-' means stdin.
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Options:
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  -h, --help     print this help message and exit
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  -v, --version  print version info and exit
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Report bugs to <r-bugs@r-project.org>."
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if test "${#}" -le 1; then
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  case "${1}" in
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    -h | --help) echo "${usage}"; exit 0 ;;
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    -v | --version) echo "${version}"; exit 0 ;;
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    *) echo "${usage}"; exit 1 ;;
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  esac
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fi
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11358 hornik 33 
ffile=${1}
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tfile=${2}
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exitstatus=${3}
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## These are set in Renviron if run from R CMD
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## 'grep -E' is POSIX, but not AT&T Unix, so not supported
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## by the default grep on Solarix, for example
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EGREP=${EGREP-egrep}
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SED=${SED-sed}
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37820 urbaneks 43 
## sed scripts to get rid of the startup message
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scriptold='/^R : Copyright /,/quit R.$/{d;}'
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scriptnew='/^R version /,/quit R.$/{d;}'
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## turn UTF-8 directional single quotes into ASCII quote
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s1="s/‘/'/g"
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s2="s/’/'/g"
37742 leisch 50 
 
37490 maechler 51 
## egrep pattern to get rid of some more
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pattern='(^Time |^Loading required package.*|^Package [A-Za-z][A-Za-z0-9]+ loaded|^<(environment|promise|pointer): )'
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32349 maechler 54 
if test ${ffile} = '-' ; then
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  ffile=''
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  bfile=''
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else
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  if test -f ${ffile} ; then
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      bfile=`basename "${ffile}"`
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  else
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      echo "no valid file ${ffile}"
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      exit 1
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  fi
11476 maechler 64 
fi
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tmpfile=${TMPDIR-/tmp}/${bfile}-d.${$}
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45264 ripley 68 
${SED} -e "${scriptold}" -e "${scriptnew}" -e "${s1}" -e "${s2}" ${ffile} | ${EGREP} -v "${pattern}" > ${tmpfile}
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## some packages ship .Rout.save with CRLF endings
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(tr -d '\r' <  ${tfile} | ${SED} -e "${scriptold}" -e "${scriptnew}" -e "${s1}" -e "${s2}" | \
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  ${EGREP} -v "${pattern}" | \
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  diff -bw ${tmpfile} - ) && exitstatus=0
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8746 hornik 74 
rm -f ${tmpfile}
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8746 hornik 76 
exit ${exitstatus}