Output git commits by day

git_days.rb

require 'optparse'

options = {
  :git_dir => ".git",
  :me      => false
}

OptionParser.new do |opts|
  opts.on("-d", "--git-dir DIR", "specify a git dir") do |dir|
    options[:git_dir] = dir
  end

  opts.on("--me") do |dir|
    options[:me] = true
  end

end.parse!

me = options[:me] ? "--author=#{`git config --get user.email`}" : ""
git_cmd = "git --git-dir=#{options[:git_dir]} --no-pager log --no-merges --date-order --format=format:'%at	%h	%an	%s' #{me}"

def bold(text)
  "\033[1m#{text}\033[0m"
end

def normalized(time)
  time.strftime("%F")
end

trap(:INT) do
  puts
  exit
end

r, w = IO.pipe
spawn({}, git_cmd, :out => w)

memo = Time.now + 86_400
r.each do |line|
  begin
    parts = line.split("\t")
    time = Time.at(parts.shift.to_i)
    if normalized(time) != normalized(memo)
      puts
      puts bold(time.strftime("%A, %B %e, %Y"))
      memo = time
    end
    puts "* " + parts.join(" ")
  rescue Errno::EPIPE
    break
  end
end