whodunnit.sh

#!/bin/bash
#
# whodunnit
# Parses the result of svn blame and displays a report of how many rows and
# percent each username has contributed with.
#
# created by johan.nilsson a bwin dot org and hans.nilsson a bwin dot org
#
if [ "$1" = "-h" ] 
	then
		echo -e "whodunnit - Parses the result of svn blame and displays a report

usage: whodunnit TARGET[@REV]...       display statistics from svn target
   or: whodunnit                       read text from stdin

Arguments:
   -h			Print Help (this message) and exit"
		exit 1
	else 
		if [ "$1" = "" ] 
			then
				blame_list=`cat /dev/stdin | sed 's/^ *[0-9]*[ \t]* //g' | cut -d" " -f1 | sort`
			else
				blame_list=`svn blame $* | sed 's/^ *[0-9]*[ \t]* //g' | cut -d" " -f1 | sort`
	fi
fi

total_rows=`echo $blame_list | sed s/" "/"\n"/g | wc -l`
commiter_list=`echo $blame_list | sed s/" "/"\n"/g | uniq -c | sort -nr | sed s/" "//g`

stats=""
for i in `echo $commiter_list`
	do
		rows=`echo $i | sed 's/[a-z]//g'`;
		commiter=`echo $i | sed 's/[0-9]//g'`;
		percent=`echo "scale=10; ($rows / $total_rows) * 100" | bc`

		commit_stat="$commiter $percent $rows"

		if [ "$stats" = "" ]
			then
				stats=$commit_stat
			else
				stats="$stats\n$commit_stat"
		fi	
done

echo "------------------------------------------------------------------------"
echo "- Fields: username, percent, rows"
echo "------------------------------------------------------------------------"
echo -e $stats | awk '{printf "%-13s %5.2f %5d\n", $1, $2, $3 }'
echo "------------------------------------------------------------------------"
echo "Total rows: $total_rows"
echo "------------------------------------------------------------------------"
echo "End-of-Report"