commit preflight script to check for stupid errors and run specs before commiting

gitpreflight.rb

#!/usr/bin/ruby

# ©2012 Russell Jennings. Released under MIT license.

class String
  def colorize(text, color_code) "\e[#{color_code}m#{text}\e[0m" end
  def red()     colorize(self, 31) end
  def green()   colorize(self, 32) end
  def yellow()  colorize(self, 33) end
  def pink()    colorize(self, 35) end
end

puts "#### Git PreFlight ####".pink
puts "#### ©2012 Russell Jennings ####".pink
sleep 1
puts "checking staged files for errors"
sleep 1
gitdiff =%x[git diff --staged]
if gitdiff.empty?
  puts "nothing staged for commit. exiting...".yellow
  exit 0
end
@gitlines = gitdiff.split("\n")
@errors = Array.new
i = 0
for line in @gitlines
  case 
    when line.match(/binding.pry/)
      @gitlines[i] = line.yellow
      @errors.push "found pry entry"
    when line.match(/console.log/)
      @gitlines[i] = line.yellow
      @errors.push "found console.log entry"
    when line.match(/^\+{1}.*#+/)
      @gitlines[i] = line.yellow
      @errors.push "found possible commented out code"
    when line.match(/^\+{1}/)
      @gitlines[i] = line.green
    when line.match(/^-{1}/)
      @gitlines[i] = line.red
  end
  i = i + 1
end
if @errors.size > (0)
  @gitlines.each {|line| puts line}
  puts "### WARNING ###".red
  puts "possibly found the following #{@errors.size} errors:".yellow
  @errors.each {|err| puts err.yellow }
  puts "Continue committing with #{@errors.size} possible errors? (y)/n".pink
  exit 0 if STDIN.gets.chop.downcase =~ /n/
else
  puts "no errors found"
  puts "want to see the commit diff? y/(n)".pink
  @gitlines.each {|line| puts line} if STDIN.gets.chop.downcase =~ /y/
end

puts "Should I run the specs before committing? y/(n)".pink
if STDIN.gets.chop.downcase =~ /y/
  puts "Run [A]ll, [C]ontrollers, or [M]odels?".pink
  what2run = STDIN.gets.chop.downcase
  case what2run
    when 'a'
      puts "running all specs..."
      runcommand = %x[bundle exec rspec spec]
      exit_code = $?.exitstatus
    when 'c'
      puts "running controller specs..."
      runcommand = %x[bundle exec rspec spec/controllers]
      exit_code = $?.exitstatus
    when 'm'
      puts "running model specs..."
      runcommand = %x[bundle exec rspec spec/models]
      exit_code = $?.exitstatus
    else
      puts "invalid option supplied"
      exit 1
  end
  case exit_code
    when 1
      puts runcommand
      puts "Specs failed!".red
      puts "Continue with commit? y/(n)".pink
      exit 0 unless STDIN.gets.chop.downcase =~ /y/
    when 0
      puts "all specs passed"
  end
end

commit = %x[git commit -m "#{ARGV[0]}"]
puts commit
puts "### Commit complete ###".pink