Extract offences on lines changed in branch

offences_on_file.rb

#!/usr/bin/env ruby

def exec_rubocop(file_name)
  response = %x{rubocop -c ./.rubocop.yml #{file_name}}
  response = response.split("\n")
  response.grep(/\d*:\d*/)
end

def commits_to_load
  %x{git log --format=format:%h $(git merge-base HEAD develop)..HEAD}.split("\n")
end

def commits_regexp
    commits_to_load.join("|")
end

def changed_lines(file)
  lines = %x{git --no-pager blame HEAD -- "#{file}"}.split("\n")
  lines.grep(/#{commits_regexp}/).map do |row|
    row.match(/(\d*)\)/)[1]
  end
end

def files_to_check
  %x{git diff --name-only HEAD $(git merge-base HEAD develop) | grep -v erb}.split("\n")
end

def extract_rubocop_line_number(row)
  # spec/reports/company_spec.rb:710:101: C: Line is too long. [124/100]
  line_number_match = row.match(/:(\d*):\d*/)
  return line_number_match[1].to_i if line_number_match
end

def file_path_in_subtree(file)
  items = file.split(File::SEPARATOR)
  items = items[1..items.length] # wheely-core/ -- cut here -- lib/wheely-core/...
  items.join(File::SEPARATOR)
end

problems = true
files_to_check.each do |f|
  file = file_path_in_subtree(f)
  puts "Processing #{file}"
  rubocop_result = exec_rubocop(file)
  changed_lines = changed_lines(file).each_with_object({}){|n,a| a[n.to_i] = true}
  rubocop_result.map do |row|
    # puts row if row.downcase.match(/complex|size/)
    line_number = extract_rubocop_line_number(row)
    if line_number
      puts row if changed_lines[line_number]
      problems = false
    end
  end
end

exit(problems)