inliner.rb

# 2009, Johannes Fahrenkrug, http://springenwerk.com
# Licence: use it however you want.

# make sure we at least have the input file as an argument
if ARGV.size != 2
  puts "Usage: ruby inliner.rb inputfile outputfile"
else
  inputfile = ARGV[0]
  outputfile = ARGV[1]
  puts "Input file: #{inputfile}"
  puts "Output file: #{outputfile}"
  
  File.open(outputfile, 'w') do |outfile|  
    File.open(inputfile).readlines.each do |line|
      if line.strip.match(/^###inline/)
        # ok, we found an inline marker
        keyvalue = line.strip.split("=")
        if keyvalue.size != 2
          puts "ERROR: invalid inline marker: '#{line.strip}'"
        else
          file = keyvalue[1]
          puts "Inlining #{file}"
          outfile.puts "/* Inlined from #{file} */"
          File.open(file).readlines.each do |insert_line|
            outfile.puts insert_line
          end
        end
      else
        # put a normal line from the original file into the new one
        outfile.puts line
      end
    end
  end
end