Whats wrong with this script?

[Tommy Nordgren]

#!/usr/bin/ruby

$headersumfile = File.open("Header-summary.txt","w");

$finalizerfile = File.open("Finalizers.m","w");

def scanfiles(dirhand, dirname)

dirhand.each { | fn |
if (fn == '.' || fn == '..')

elsif (fn =~ /\.m$/)
File.open("#{dirname}/#{fn}","r") { | f |
f.each { | l |
$finalizerfile.puts(l);
}
}
elsif (fn =~ /\.h$/)
File.open("#{dirname}/#{fn}","r") { | f |
f.each { | l |
$headersumfilefile.puts(l);
}
}
elsif (File.directory?("#{dirname}/#{fn}"))
scanfiles(Dir.open("#{dirname}/#{fn}"),"#{dirname}/#{fn}")
end
}
dirhand.close;
end

scanfiles(Dir.open("Source"),"Source");

$finalizerfile.close;
$headersumfile.close;

Message from terminal:
emac$ ./extractdata.rb
/extractdata.rb:21:in `scanfiles': private method `puts' called for
nil:NilClass (NoMethodError)
from ./extractdata.rb:20:in `each'
from ./extractdata.rb:20:in `scanfiles'
from ./extractdata.rb:19:in `open'
from ./extractdata.rb:19:in `scanfiles'
from ./extractdata.rb:9:in `each'
from ./extractdata.rb:9:in `scanfiles'
from ./extractdata.rb:25:in `scanfiles'
from ./extractdata.rb:9:in `each'
from ./extractdata.rb:9:in `scanfiles'
from ./extractdata.rb:31
Work Directory: ~/Desktop/Drawkit/DrawKit/Trunk :

The script are supposed to copy objective source and header files to a
pair of files.
The directory to be scanned exists in my current work directory.
Can someone please help

 

[Sebastian Hungerecker]

$headersumfilefile.puts(l);

Typo: there is no variable $headersumfilefile, only $headersumfile.

HTH,
Sebastian

 

[Simon Krahnke]

Typo: there is no variable $headersumfilefile, only $headersumfile.

That seems to be another reason not to use global variables.

mfg, simon .... l