prevent_asset_commit.rb

pre-commit.rb

#!/usr/bin/env ruby
# Place in your .git/hooks directory
# Prevents rails assets commotted to master and other merge conflicts, etc

def on_master?
  `git rev-parse --abbrev-ref HEAD`.include?("master")
end

# Don't allow master to have a manifest
if on_master? && File.directory?("public/assets")
  puts "Master Cannot Have Compiled Assets - this interrupts live compile and build scripts"
  exit 1
end


FORBIDDEN = [
  />>>>>>/,    # Git conflict markers
  /<<<<<</,    # ''
  /======/,    # ''
  /binding\.pry/,        # pry debugging code
  /binding\.remote_pry/, # ''
  /debugger/             # Ruby debugging code
]
error_found = false

full_diff = `git diff --cached --`

full_diff.scan(%r{^\+\+\+ b/(.+)\n@@.*\n([\s\S]*?)(?:^diff|\z)}).each do |file, diff|
  added = diff.split("\n").select { |x| x.start_with?("+") }.join("\n")
  # Scan for "forbidden" calls
  FORBIDDEN.each do |re|
    if added.match(re)
      puts %{Error: git pre-commit hook forbids committing lines with "#{$1 || $&}" to #{file}\n--------------}
      error_found = true
    end
  end
end
# Finally, report errors
if error_found
  puts "To commit anyway, use --no-verify"
  exit 1
end