# Zlib file decompression EOL issue **URL:** \ **Category:** Ruby\ **Created:** [April 11, 2008, 5:06pm UTC](https://www.ruby-forum.com/t/zlib-file-decompression-eol-issue/134517 "2008-04-11T17:06:28Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![peho](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/8edcca/32.png) [@peho](https://www.ruby-forum.com/u/peho)\ **Post date:** [April 11, 2008, 5:06pm UTC](https://www.ruby-forum.com/t/zlib-file-decompression-eol-issue/134517/1 "2008-04-11T17:06:28Z")
Hi, first thx for helping ! I’m trying to decompress some .gz files with zlip. Here’s the code that i use, taken from here [http://www.misuse.org/science/2007/09/07/ruby-zlib-buffer-error-on-windows/](http://www.misuse.org/science/2007/09/07/ruby-zlib-buffer-error-on-windows/) and modified to fit my needs. File::open(compressedFilePath.sub(‘.gz’, ‘’), ‘wb’) do |unzipped\_file| unzipped\_file.binmode gz = File::open(compressedFilePath, ‘rb’) gz.binmode begin zis = Zlib::GzipReader.new(gz) puts zis.os\_code() dis = zis.read io = StringIO.new(dis) ensure zis.finish if zis end unzipped\_file.write(io.read) unzipped\_file.flush unzipped\_file.fsync gz.close end The problem is, when i try to decompress FAT encoded files, only the first line is read and managed. The GzipReader ignore the rest of the file beyond the first line: > file object-TS1T-AA-CS-C-0123-2005.08.31.05.01-2005.08.31.05.34.csv.gz > object-TS1T-AA-CS-C-0123-2005.08.31.05.01-2005.08.31.05.34.csv.gz: gzip > compressed data, from FAT filesystem (MS-DOS, OS/2, NT) No problem when it’s Unix encoded: > file error-TS1T-AA-CS-C-0123-2005.08.31.05.01-2005.08.31.05.34.csv.gz > error-TS1T-AA-CS-C-0123-2005.08.31.05.01-2005.08.31.05.34.csv.gz: gzip > compressed data, was “error-TS1T-AA-CS-C-0123-2005.08”, from Unix, last > modified: Thu Apr 10 14:02:51 2008 I suspect EOL issue, but i can’t find a workaround. Any suggestions are welcome.