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Recognize 7z files by magic bytes, not filename

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Jack Nagel 2013-04-03 23:30:32 -05:00
parent 12932a51b3
commit df29049222
1 changed files with 10 additions and 10 deletions
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20
Library/Homebrew/extend/pathname.rb
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@ -181,20 +181,20 @@ class Pathname
# POSIX tar magic has a 257 byte offset # POSIX tar magic has a 257 byte offset
# magic numbers stolen from /usr/share/file/magic/ # magic numbers stolen from /usr/share/file/magic/
case open { |f| f.read(262) } case open { |f| f.read(262) }
when /^PK\003\004/n then :zip when /^PK\003\004/n then :zip
when /^\037\213/n then :gzip when /^\037\213/n then :gzip
when /^BZh/n then :bzip2 when /^BZh/n then :bzip2
when /^\037\235/n then :compress when /^\037\235/n then :compress
when /^.{257}ustar/n then :tar when /^.{257}ustar/n then :tar
when /^\xFD7zXZ\x00/n then :xz when /^\xFD7zXZ\x00/n then :xz
when /^Rar!/n then :rar when /^Rar!/n then :rar
when /^7z\xBC\xAF\x27\x1C/n then :p7zip
else else
# This code so that bad-tarballs and zips produce good error messages # This code so that bad-tarballs and zips produce good error messages
# when they don't unarchive properly. # when they don't unarchive properly.
case extname case extname
when ".tar.gz", ".tgz", ".tar.bz2", ".tbz" then :tar when ".tar.gz", ".tgz", ".tar.bz2", ".tbz" then :tar
when ".zip" then :zip when ".zip" then :zip
when ".7z" then :p7zip
end end
end end
end end