# Newbie trying to zip all .dat files in directory **URL:** \ **Category:** ruby-talk\ **Created:** [16 August 2005 00:41 UTC](https://rubytalk.org/t/newbie-trying-to-zip-all-dat-files-in-directory/20180 "2005-08-16T00:41:26Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Len\_Sumnler](https://avatars.discourse-cdn.com/v4/letter/l/aeb1de/32.png) [@Len\_Sumnler](https://rubytalk.org/u/Len_Sumnler)\ **Post date:** [16 August 2005 00:41 UTC](https://rubytalk.org/t/newbie-trying-to-zip-all-dat-files-in-directory/20180/1 "2005-08-16T00:41:26Z")
Hello all. I am running Ruby 1.8.2 on XP professional. Have installed RubyZip through gems. I have tried to create a zip file containing all of the .dat file in a particular directory. It appears that I only get the last .dat file ziped. Can anyone point me in the right direction. Please remember I have just started to learn Ruby but am trying to create some small but usefull functions. I looked through the news group for similar post and tried googling for additional documentation on the RubyZip and seem to have come up short. Len Sumnler ---
**Author:** ![Wilson\_Bilkovich](https://yyz1.discourse-cdn.com/flex029/user_avatar/rubytalk.org/wilson_bilkovich/32/8247_2.png) [@Wilson\_Bilkovich](https://rubytalk.org/u/Wilson_Bilkovich)\ **Post date:** [16 August 2005 03:14 UTC](https://rubytalk.org/t/newbie-trying-to-zip-all-dat-files-in-directory/20180/2 "2005-08-16T03:14:00Z")
Well, I was just going to bang this one out, and help you out, but rubyzip is pretty odd. It's the most Java-like Ruby program I have seen. Looking at the docs and the source code, I've just written a number of test programs, starting with this: require 'rubygems' require 'zip/zip' Zip::ZipFile.open('example.zip',Zip::ZipFile::CREATE) do |zfile|   Dir["\*.dat"].each do |file\_name|     zfile.add(file\_name, file\_name)   end end However, that gives me: c:/ruby/lib/ruby/1.8/delegate.rb:105:in `method\_missing': undefined method `copy\_stream' for #\ (NoMethodError)         from c:/ruby/lib/ruby/gems/1.8/gems/rubyzip-0.5.9/lib/zip/zip.rb:1282:in `write\_to\_zip\_output\_stream' copy\_stream comes from "fileutils.rb", and I get that error even if I include it and edit the rubyzip source to make an explicit call to it. So.. Blocked by that, I found another mailing list posting which got me headed in the right direction.. This now works for me. (Note the 'b' as part of the file mode. Nothing worked until I set it to binary mode, at least on Windows XP) require 'zip/zip' Zip::ZipOutputStream.open("example.zip") do |zos|   Dir["\*.dat"].each do |file\_name|     zos.put\_next\_entry(file\_name)     File.open(file\_name,'rb') do |f|     zos.write(f.read)   end   end end Short answer: Someone needs to point out another zip library for Ruby. Heh. > **···** > > On 8/15/05, len \ wrote: > > > Hello all. > > > > I am running Ruby 1.8.2 on XP professional. Have installed RubyZip > > through gems. > > > > I have tried to create a zip file containing all of the .dat file in a > > particular directory. It appears that I only get the last .dat file > > ziped. Can anyone point me in the right direction. Please remember I > > have just started to learn Ruby but am trying to create some small but > > usefull functions. I looked through the news group for similar post > > and tried googling for additional documentation on the RubyZip and seem > > to have come up short. ---
**Author:** ![Len\_Sumnler](https://avatars.discourse-cdn.com/v4/letter/l/aeb1de/32.png) [@Len\_Sumnler](https://rubytalk.org/u/Len_Sumnler)\ **Post date:** [16 August 2005 03:51 UTC](https://rubytalk.org/t/newbie-trying-to-zip-all-dat-files-in-directory/20180/3 "2005-08-16T03:51:14Z")
Thanks I really do appreciate all of the work you did. I'm new to Ruby and in many respects to this whole OO thing. I will study and use the code you supplied. Quick question, I was kind of doing the same thing but I did not prefix the first line with Zip:: --- what is the significance. Len Sumnler ---
**Author:** ![dave](https://avatars.discourse-cdn.com/v4/letter/d/ee7513/32.png) [@dave](https://rubytalk.org/u/dave)\ **Post date:** [16 August 2005 08:50 UTC](https://rubytalk.org/t/newbie-trying-to-zip-all-dat-files-in-directory/20180/4 "2005-08-16T08:50:42Z")
> Quick question, I was kind of doing the same thing but I did not prefix > the first line with Zip:: --- what is the significance. It's the Zip module namespace. If you write a program, Test, a class such as Settings can cause problems. Using a module: module Test   class Settings   end end Test::Settings will not cause definition problems with other programs that use the same class name: Settings. > **···** > > -- > > > here are more things in heaven and earth, > > horatio, than are dreamt of in your philosophy. ---
**Author:** ![Wilson\_Bilkovich](https://yyz1.discourse-cdn.com/flex029/user_avatar/rubytalk.org/wilson_bilkovich/32/8247_2.png) [@Wilson\_Bilkovich](https://rubytalk.org/u/Wilson_Bilkovich)\ **Post date:** [16 August 2005 12:41 UTC](https://rubytalk.org/t/newbie-trying-to-zip-all-dat-files-in-directory/20180/5 "2005-08-16T12:41:09Z")
I was thinking about my message, and realized I had perhaps come across as harsh on RubyZip. I wouldn't want the author to read my post and come slash my tires or anything. I just meant that it is (in its own words, as well) a direct port of the Java zip library. As such, it's very much not idiomatic Ruby. I just wanted to make sure you realized that as you studied it. Don't try to make your code look like this, unless that makes you happy. Speaking of which.. does anyone else know what's up with the copy\_stream problem I ran into on my first try? I've never used that method before, so I'm not sure exactly how it should work. > **···** > > On 8/15/05, len \ wrote: > > > Thanks > > > > I really do appreciate all of the work you did. I'm new to Ruby and in > > many respects to this whole OO thing. I will study and use the code > > you supplied. > > > > Quick question, I was kind of doing the same thing but I did not prefix > > the first line with Zip:: --- what is the significance. ---
**Author:** ![Chris6](https://avatars.discourse-cdn.com/v4/letter/c/b2d939/32.png) [@Chris6](https://rubytalk.org/u/Chris6)\ **Post date:** [16 August 2005 18:16 UTC](https://rubytalk.org/t/newbie-trying-to-zip-all-dat-files-in-directory/20180/6 "2005-08-16T18:16:15Z")
I am able to run the original code on Win2K with ruby 1.8.2 (2004-12-25) [i386-mswin32] and RubyZip-0.5.8 Possibly a bug introduced in RubyZip-0.5.9? Cheers ---
**Author:** ![Thomas\_Sondergaard4](https://avatars.discourse-cdn.com/v4/letter/t/8491ac/32.png) [@Thomas\_Sondergaard4](https://rubytalk.org/u/Thomas_Sondergaard4)\ **Post date:** [29 August 2005 14:26 UTC](https://rubytalk.org/t/newbie-trying-to-zip-all-dat-files-in-directory/20180/7 "2005-08-29T14:26:22Z")
Wilson Bilkovich wote: > I was thinking about my message, and realized I had perhaps come > across as harsh on RubyZip. I wouldn't want the author to read my > post and come slash my tires or anything. I wouldn't think of it. besides I don't know where you live 🙂 > I just meant that it is (in its own words, as well) a direct port of > the Java zip library. > As such, it's very much not idiomatic Ruby. I just wanted to make > sure you realized that as you studied it. Don't try to make your code > look like this, unless that makes you happy. It is certainly not a direct port, as I have never seen the source code to java's ZipFile/ZipInputStream. I wrote rubyzip to learn ruby and I have tried to make it ruby-like. For instance the stream-objects are IO-like and there is an API that let you access the contents of a zip file with an interface similar to that provided by ruby's File and Dir classes ([http://rubyzip.sourceforge.net/classes/Zip/ZipFileSystem.html\](http://rubyzip.sourceforge.net/classes/Zip/ZipFileSystem.html%5C)). The idea is of course to minimize the amount of API you have to learn. I've never used rubyzip myself, it's just a pet project for playing with ruby. If you have suggestions for (API) improvements I'd be happy to hear about them. > Speaking of which.. does anyone else know what's up with the > copy\_stream problem I ran into on my first try? I've never used that > method before, so I'm not sure exactly how it should work. 0.5.9 is broken - unfortunately I released it just before I went on vacation. 0.5.10 will be released shortly, until then 0.5.8 works. br, Thomas