def self.contains(filename, search, force_ruby=false)
return false if ! (File.file? filename and File.basename(filename).downcase =~ /.\.t(ar\.)?gz$/)
regex = Regexp.new search
if RHC::Helpers.windows? or RHC::Helpers.mac? or force_ruby
begin
zlib::GzipReader.open(filename) do |gz|
Minitar::Reader.open gz do |tar|
tar.each_entry do |entry|
if entry.full_name =~ regex
return true
end
end
end
end
rescue zlib::GzipFile::Error, zlib::GzipFile::Error
false
end
else
system "#{TAR_BIN} --wildcards -tf '#{filename}' '#{regex.source}' 2>/dev/null >/dev/null"
end
end