contributors.sh

#!/bin/sh

function list_contributors {
    git log | grep "Author:" | sed "s/    //" | sed "s/ <.*//" | sort | uniq -c | sort
}

function total_contributors {
    list_contributors | wc -l | sed 's/ *//'
}

function core_developers {
    grep '    \* ' AUTHORS  | wc -l | sed 's/ *//'
}

function normal_contributors {
    echo `total_contributors` - `core_developers` | bc
}

function number_of_contributions {
    local contributions=$(seq -s '|' $1 | sed 's/\|$//')
    local contributors=$(list_contributors | egrep " ($contributions) Author" | wc -l | sed 's/ *//')
    local percent=$(echo "scale=2; $contributors*100/`normal_contributors`" | bc)
    echo "$contributors ($percent%)"
}

echo "Total contributors:"
total_contributors
echo
echo "Core developers:"
core_developers
echo
echo "Normal contributors:"
normal_contributors
echo
echo "New contributors with 1 contribution:"
number_of_contributions 1
echo
echo "New contributors with 2 contributions:"
number_of_contributions 2
echo
echo "New contributors with 3 contributions:"
number_of_contributions 3