timesheet.rb

#!/usr/bin/env ruby
#
# timesheet.rb <month to display>
#
# Displays a list of the subject lines for all commits by an author
# in one month.  Defaults to the current month.  You can specify a
# different month in many different ways.
#
#   timesheet.rb last month
#   timesheet.rb 1           => last January
#   timesheet.rb jun         => June
#   timesheet.rb 1 year ago
#
# References:
#
# Chronic: A natural-language Time and Date parsing library:
#    http://chronic.rubyforge.org/
#
# Man page doc for: git log
#   http://www.kernel.org/pub/software/scm/git/docs/git-log.html
#
require 'rubygems'
require 'activesupport'
require 'chronic'
devroot = '/Users/stephen/dev/'
author = 'stephen'
repositories = [
  ['RITES', 'ruby/src/webapps/rigse2.git']
]
if ARGV.empty?
  time = Time.now
else
  time = Chronic.parse(ARGV.join(' '), :context => :past)
end
date_format = '%m/%d/%Y'
month_start = time.at_beginning_of_month.strftime(date_format)
time_month_end   = time.next_month.at_beginning_of_month
if time_month_end > Time.now
  time_month_end = Time.now
end
month_end = time_month_end.strftime(date_format)
repositories.each do |project, dir|
  path = devroot + dir
  Dir.chdir(path) do
    commit_subjects = `git log HEAD --no-merges --reverse --since='#{month_start}' --until='#{month_end}' --pretty=format:"* %s%n" --author=#{author}`
    commit_subjects.gsub!(/\n\n+\*/, "\n*")
    puts <<HEREDOC

project: #{project}
repository: #{path}
author: #{author}
period: #{month_start} to #{month_end}
non-merge commits: #{commit_subjects.split("\n").length}

#{commit_subjects}
HEREDOC
  end
end