#!/usr/bin/ruby

# display include files

cmd = "grep include[^d] " + ARGV[0]
system cmd
print "\n"

# display macros

cmd = "grep define[^d] " + ARGV[0]
system cmd

# display types and functions

line_once = true
cmd = "gcc -E " + ARGV[0]
p_in = IO.popen(cmd, "r")
while ( line = p_in.gets )
    case line
    when /^#/
    when /[\S]/
        puts line
        line_once = true
    else
        if line_once == true
            puts line
            line_once = false
        end
    end
end
p_in.close