Git pre-commit hook

gistfile1.txt

#!/usr/bin/env ruby

# Put the contents of this gist into .git/hooks/pre-commit
# Make sure to chmod a+x .git/hooks/pre-commit

flag = false

modified_files = `git diff-index --name-status --cached HEAD`.
  map {|line| line.split}.
  select {|(status, name)| status != 'D'}. # ignore deleted files
  map {|(status, name)| name}

# Check Ruby syntax
modified_files.select {|f| f.match /\.((rb)|(rake))$/}.each do |file|

  result = `ruby -c #{file} 2>&1`

  if $? != 0
    puts result
    puts '==================='
    flag = true
  end
end

# Check ERB syntax
modified_files.select {|f| f.match /((\.rhtml)|(\.erb))$/}.each do |file|
  result = "sed 's/<%=/<%/g' #{file} | erb -xT - | ruby -c 2>&1"

  if $? != 0
    puts file
    puts result
    puts '==================='
    flag = true
  end
end

# Commented out because too many of our libraries have console in them.
#
# Dir["public/javascripts/**/*.js"].each do |file|
#   result = `grep -n console #{file}`
# 
#   if $? == 0
#     puts file
#     puts result
#     flag = true
#   end
# end

if flag
  puts 'Syntax errors!  Wah wah.'
  puts 'Did not commit.'
  exit 1
end

# exec "rake spec"