Extended maintenance of Ruby 1.9.3 ended on February 23, 2015. Read more
A header for a tar file
Fields in the tar header
Pack format for a tar header
Unpack format for a tar header
Creates a tar header from IO stream
# File rubygems/package/tar_header.rb, line 98 def self.from(stream) header = stream.read 512 empty = (header == "\0" * 512) fields = header.unpack UNPACK_FORMAT name = fields.shift mode = fields.shift.oct uid = fields.shift.oct gid = fields.shift.oct size = fields.shift.oct mtime = fields.shift.oct checksum = fields.shift.oct typeflag = fields.shift linkname = fields.shift magic = fields.shift version = fields.shift.oct uname = fields.shift gname = fields.shift devmajor = fields.shift.oct devminor = fields.shift.oct prefix = fields.shift new :name => name, :mode => mode, :uid => uid, :gid => gid, :size => size, :mtime => mtime, :checksum => checksum, :typeflag => typeflag, :linkname => linkname, :magic => magic, :version => version, :uname => uname, :gname => gname, :devmajor => devmajor, :devminor => devminor, :prefix => prefix, :empty => empty # HACK unfactor for Rubinius #new :name => fields.shift, # :mode => fields.shift.oct, # :uid => fields.shift.oct, # :gid => fields.shift.oct, # :size => fields.shift.oct, # :mtime => fields.shift.oct, # :checksum => fields.shift.oct, # :typeflag => fields.shift, # :linkname => fields.shift, # :magic => fields.shift, # :version => fields.shift.oct, # :uname => fields.shift, # :gname => fields.shift, # :devmajor => fields.shift.oct, # :devminor => fields.shift.oct, # :prefix => fields.shift, # :empty => empty end
Creates a new TarHeader using
vals
# File rubygems/package/tar_header.rb, line 164 def initialize(vals) unless vals[:name] && vals[:size] && vals[:prefix] && vals[:mode] then raise ArgumentError, ":name, :size, :prefix and :mode required" end vals[:uid] ||= 0 vals[:gid] ||= 0 vals[:mtime] ||= 0 vals[:checksum] ||= "" vals[:typeflag] ||= "0" vals[:magic] ||= "ustar" vals[:version] ||= "00" vals[:uname] ||= "wheel" vals[:gname] ||= "wheel" vals[:devmajor] ||= 0 vals[:devminor] ||= 0 FIELDS.each do |name| instance_variable_set "@#{name}", vals[name] end @empty = vals[:empty] end
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