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#! /bin/bash
#
# shprof - a line profiler for shell scripts
#
# adapted from a similar program included in `The New KornShell' by
# Bolsky and Korn and posted to usenet by bsh20858@challenger.fhda.edu
#
# converted to bash v2 syntax by Chet Ramey
#
TMPFILE=${TMP:-/tmp}/shprof$$
trap 'rm -f $TMPFILE' EXIT
errexit()
{
echo $0: "$@" >&2
exit 1
}
# create script with profiling enabled
cat > $TMPFILE <<- \_EOF_
declare -a _line
_profend()
{
case "$1" in
/*|./*) file="$1" ;;
*) file=$(type -path "$1") ;;
esac
echo "*** line profile for $file ***"
i=1;
while read -r && [ $i -le $NLINE ]; do
count=${_line[$i]}
if [ "$count" -gt 0 ]; then
echo "[$count] $i: $REPLY"
fi
i=$((i + 1))
done <$file
_EOF_
# make the profiling script remove itself after printing line stats
echo "rm -f $TMPFILE" >> $TMPFILE
cat >> $TMPFILE <<- \_EOF_
}
_command=$1
shift
i=1
NLINE=$(wc -l < "$_command")
while [ $i -le $NLINE ]; do
_line[$i]=0
i=$((i + 1))
done
unset i
trap "_profend ${_command}" EXIT
trap '_line[$LINENO]=$((${_line[$LINENO]} + 1))' DEBUG
LINENO=0
_EOF_
case "$1" in
/*|./*) file=$1 ;;
*) file=$((type -path "$1")) ;;
esac
cat "${file-$1}" >> $TMPFILE || errexit "${1}: cannot open"
chmod +x $TMPFILE
exec -a "$file" $TMPFILE "$@"
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