CODEWITHSUNDEEP
rubyziptemporary-files
Kkkev
Kkkev

Reputation: 4905

Ruby: reading a temporary zip file

I have a TempFile object that is a zip file, and I wish to read from it as follows:

Zip::ZipFile.open_buffer(tempfile) do |zipfile|
    ...
end

However, when I do this, I get the following error:

Zip::ZipFile.open_buffer expects an argument of class String or IO. Found: Tempfile

I've also tried

Zip::ZipFile.open(tempfile.path) do |zipfile|
    ...
end

But that returns

can't dup NilClass

How can I process a temporary zip file?

Upvotes: 5

Views: 2543

Answers (3)

yeshwant singh
yeshwant singh

Reputation: 164

I faced the same error , but after digging i found out that these zip file should be in binary

i.e, first copy them to some file in binary mode then you can unzip it using ZIP module without facing the error

sample code

#copying zip file to a new file in binary mode

filename = "empty.zip" 
File.open(filename, "wb") do |empty_file|
  open("#{zipfile_url}", 'rb') do |read_file|
    empty_file.write(read_file.read)
  end
end

#now you can open the zip file

Zip::File.open(filename) do |f|
  . . .
end

Upvotes: 0

Kkkev
Kkkev

Reputation: 4905

It turns out that the temporary file was corrupted, so the

can't dup NilClass

error was as a result of trying to read the corrupted file.

Therefore the solution is to use

Zip::ZipFile.open(tempfile.path) do |zipfile|
    ...
end

Upvotes: 3

peter
peter

Reputation: 42192

See the following article http://info.michael-simons.eu/2008/01/21/using-rubyzip-to-create-zip-files-on-the-fly/ which explains how to use the more basic interface Zip::ZipOutputStream if you work with a Tempfile

Upvotes: 3

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