Forum: Ruby on Rails File Auditing with rails - File I/O issue

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9fc9f31415f9384fbe7262fa916e16f5?d=identicon&s=25 Brian Corrigan (Guest)
on 2006-03-16 23:32
(Received via mailing list)
Hey Folks,
I've written a script to generate a list of all files on a machine,
then zip the results.  I'm going to stick a web front end on it, and use
it to audit some file servers. The problem is that the ZIP
compression/decompression isn't working,
but its not what you might think.  The script completes, but seems to
not actually write anything.

Here is a short version that only looks at the C:/temp drive.  You can
change this at the top.

---Start Code Here--
require 'find'
require 'csv'
require 'zlib'
tempfile = "temp.csv"
outfile  = "out.zip"
dirname = "c:/temp"
# Prepare comma-delimited file for writing
CSV::Writer.generate(File.open(tempfile,"w+"), ',') do |csv|
      Find.find(dirname) do |f|
          csv << [File.dirname(f), File.basename(f), File.mtime(f).to_s]
      end
end
# TEST: View the tempfile to make sure it has data.
#  This prints nothing, but the file DOES have info after
# the script completes.  Maybe the file isn't written at this point?
p IO.read(tempfile)
Zlib::GzipWriter.open(outfile) do |gz|
  gz << File.open(tempfile).read
end
Zlib::GzipReader.open(outfile) {|gz|
  print gz.read
}
# The ZIP file can't be extracted with WINZIP.  No idea why, but since
# I'll be using another RUBY script for extraction, im not sure that I
care.


---------------------------
Brian Corrigan
---------------------------
A2c85dc5ee81b12e3cc0a6522e8d079d?d=identicon&s=25 Chris Hall (Guest)
on 2006-03-17 00:30
(Received via mailing list)
I think you might want to try

outfile = "out.gz"
...
Zlib::GzipWriter.open(outfile) do |gz|
  gz.write(File.read(tempfile))
end

also, gzip != zip hence why winzip can't do anything with the resulting
gzipped file.  I wouldn't know if winzip supports gzip compression or
not.
the extension for a gzipped file is typically .gz.

Chris
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