gistfile1.rb

begin
    $stdin.each_line do |prism_line|
        # cflewis | 2010-03-27 | Regular expressions to use
        # cflewis | 2010-03-27 | eg. x[3] : [0..2] init blank
        array_declaration = /(\s*)(\w+)\[(\d+)\]\s+:\s+(\[.*\]\s+init\s+(\w+)\;)/
        
        # cflewis | 2010-03-27 | eg. x[1]
        array_usage = /(\w+)\[(\d+)\]/
        
        separator = "__"
    
        # cflewis | 2010-03-27 | For each line, check for array declarations
        # and substitute with individual variables
        if (prism_line =~ array_declaration) 
            leading_whitespace = $1
            array_name = $2
            array_length = $3
            tailing_data = $4
                        
            array_substitution = ""

            for i in (0..Integer(array_length) - 1)
                array_substitution = array_substitution + 
                    "#{leading_whitespace}#{array_name}#{separator}#{i} " +
                    ": #{tailing_data} //Substitution by Spectrum\n"
            end

            prism_line.gsub!(array_declaration, array_substitution)
        end
        
        # cflewis | 2010-03-27 | Replace all array usages with their
        # corresponding expanded variables
        prism_line.gsub!(array_usage, '\1' + separator + '\2')
        
        puts prism_line
    end
end