Git Syntax Check pre-commit Hook

gistfile1.sh

# .git/hooks/pre-commit
git stash -q --keep-index
.git/hooks/syntax.rb
RESULT=$?
git stash pop -q
[ $RESULT -ne 0 ] && exit 1
exit 0

syntax.rb

#!/usr/bin/ruby
# .git/hooks/syntax.rb

exitCode = 0

puts "Starting pre-commit hook...", ""

puts "Doing php -l checks...", ""
# Check each added or modified file for syntax errors.
proc = IO.popen('git status --porcelain') do |f|
  f.readlines.each do |fileline|
    filebits = fileline.split ' ';
    if not (filebits[0] == 'M' or filebits[0] == 'A')
      next
    end
    
    next if not filebits[1].index('.php')
    
    puts "Checking file #{filebits[1]}..."
    
    IO.popen("php -l #{filebits[1]}") do |g|
      resultLines = g.readlines
      
      if resultLines.count > 1
        exitCode = 2
      end
      
      puts resultLines
    end
  end
end

exit!(exitCode)