gitへ変更した行数をカウントするスクリプト

git_count_changes.rb

# gitへ変更した行数をカウントするスクリプト
#
# example:
# git log --since=2014-11-01 --committer=manhole --shortstat --ignore-all-space --no-merges | ruby git_count_changes.rb
#   => commits=175, insertions=10350, deletions=1253

# 各行の形式は...
# 10 files changed, 210 insertions(+), 19 deletions(-)
#  1 file changed, 5 insertions(+)
#  1 file changed, 50 deletions(-)

commits = 0
insertions = 0
deletions = 0
ARGF.each_line { |line|
    if !(line =~ / files? changed, /)
        next
    end
    #puts line
    commits += 1
    if line =~ /(\d+) insertion/
        #puts $1
        insertions += $1.to_i
    else
        #puts 0
    end
    if line =~ / (\d+) deletion/
        #puts $1
        deletions += $1.to_i
    else
        #puts 0
    end
}
puts %Q|commits=#{commits}, insertions=#{insertions}, deletions=#{deletions}|