Search my commits given a period

gsearch.rb

#!/usr/bin/env ruby

require 'date'

def print_usage
  puts "USAGE: gsearch <from> [<to>]"
  exit 1
end

print_usage if ARGV.size < 1 || ARGV.size > 2

begin
  from = Date.strptime(ARGV[0],"%d/%m/%Y")
  if ARGV[1]
    to = Date.strptime(ARGV[1],"%d/%m/%Y")
  end
rescue ArgumentError
  puts 'Invalid date format. Valid format: dd/mm/YYYY'
  print_usage
end

str_from = from.strftime("%Y-%m-%d")
to = to || from + 1
str_to = to.strftime("%Y-%m-%d")

puts "Showing commits from #{str_from} to #{str_to}"
git_command = 'git log --all --date=iso-local --pretty=format:\'%ad %aN %s\' --author="Leandro Guida" --reverse'
command = "#{git_command} | awk '$0 >= \"#{str_from}\" && $0 <= \"#{str_to}\"'"
system(command)