Problem with open_buffer

[sandrods]

I'm getting undefined method bytesize' for nil:NilClass`using open_buffer.

this code works:

data = string_with_zip_file
::File.open('my_file.zip', "wb") {|f| f.write(data) }
Zip::File.open('my_file.zip')

but if I try to use open_buffer

data = string_with_zip_file
Zip::File.open_buffer(data)

I get this error:

NoMethodError: NoMethodError: undefined method `bytesize' for nil:NilClass
  .rbenv/versions/1.9.3-p327/.../rubyzip-1.1.6/lib/zip/entry.rb:224:in `read_local_entry'
  .rbenv/versions/1.9.3-p327/.../rubyzip-1.1.6/lib/zip/entry.rb:194:in `read_local_entry'
  .rbenv/versions/1.9.3-p327/.../rubyzip-1.1.6/lib/zip/output_stream.rb:114:in `block in copy_raw_entry'
  .rbenv/versions/1.9.3-p327/.../rubyzip-1.1.6/lib/zip/entry.rb:557:in `get_raw_input_stream'
  .rbenv/versions/1.9.3-p327/.../rubyzip-1.1.6/lib/zip/output_stream.rb:112:in `copy_raw_entry'
  .rbenv/versions/1.9.3-p327/.../rubyzip-1.1.6/lib/zip/entry.rb:545:in `write_to_zip_output_stream'
  .rbenv/versions/1.9.3-p327/.../rubyzip-1.1.6/lib/zip/file.rb:318:in `block (2 levels) in write_buffer'
  .rbenv/versions/1.9.3-p327/.../rubyzip-1.1.6/lib/zip/entry_set.rb:42:in `call'
  .rbenv/versions/1.9.3-p327/.../rubyzip-1.1.6/lib/zip/entry_set.rb:42:in `block in each'
  .rbenv/versions/1.9.3-p327/.../rubyzip-1.1.6/lib/zip/entry_set.rb:41:in `each'
  .rbenv/versions/1.9.3-p327/.../rubyzip-1.1.6/lib/zip/entry_set.rb:41:in `each'
  .rbenv/versions/1.9.3-p327/.../rubyzip-1.1.6/lib/zip/file.rb:318:in `block in write_buffer'
  .rbenv/versions/1.9.3-p327/.../rubyzip-1.1.6/lib/zip/output_stream.rb:60:in `write_buffer'
  .rbenv/versions/1.9.3-p327/.../rubyzip-1.1.6/lib/zip/file.rb:317:in `write_buffer'
  .rbenv/versions/1.9.3-p327/.../rubyzip-1.1.6/lib/zip/file.rb:128:in `open_buffer'

Am I doing something wrong?

[drock]

I am getting the same thing.

I switched to using Zip::InputStream instead. Example:

Zip::InputStream.open(StringIO.new(data)) do |zis|
      while entry = zis.get_next_entry
          puts entry.name
      end
end

[mpwdawson]

I'm running into this same error: NoMethodError: undefined method `bytesize' for nil:NilClass, but it looks like OS X's .DS_Store is the culprit. Zip::File.open works fine, but Zip::File.open_buffer raises the error. I can work around this, but hopefully this can be fixed?

My code:

contents = []
Zip::File.open_buffer(File.open("zip_test.zip", "rb").read) do |zip_file|
  zip_file.each do |entry|
    contents << entry.get_input_stream.read
  end
end

Sample attachment you can use: https://s3.amazonaws.com/github-rubyzip/zip_test.zip

Thanks.

[kylekyle]

It looks like this is not going to be fixed. Can a project maintainer just mark it as such and make the method private so people aren't led to believe they can open a buffer directly?

[aalvarado]

I was getting this error while trying to use the Roo gem.

It looks like it was an encoding issue. We had something like this:

Roo::Excelx.new(StringIO.new(xlsx_report.file_data))

and getting

NoMethodError:
       undefined method `bytesize' for nil:NilClass

loading it like this:

Roo::Excelx.new(StringIO.new(xlsx_report.file_data).set_encoding('ASCII-8BIT'))

solves the issue.

[bpina]

I received this error as well, but it only occurred when I ran the code on OS X. There was no problem opening the buffer on Linux (Gentoo or Ubuntu).

Here's some example code that could reproduce the problem on OS X:

Zip::File.open_buffer(File.read('/path/to/my_zip.zip'))

I was able to resolve the issue on OS X by changing my code to:

Zip::File.open_buffer(File.binread('/path/to/my_zip.zip'))

[hainesr]

Fixed, as far as I can tell.