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Diffstat (limited to 'ruby_2_2/lib/rubygems/package/tar_header.rb')
| -rw-r--r-- | ruby_2_2/lib/rubygems/package/tar_header.rb | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/ruby_2_2/lib/rubygems/package/tar_header.rb b/ruby_2_2/lib/rubygems/package/tar_header.rb deleted file mode 100644 index f9ab13aca7..0000000000 --- a/ruby_2_2/lib/rubygems/package/tar_header.rb +++ /dev/null @@ -1,229 +0,0 @@ -# -*- coding: utf-8 -*- -#-- -# Copyright (C) 2004 Mauricio Julio Fernández Pradier -# See LICENSE.txt for additional licensing information. -#++ - -## -#-- -# struct tarfile_entry_posix { -# char name[100]; # ASCII + (Z unless filled) -# char mode[8]; # 0 padded, octal, null -# char uid[8]; # ditto -# char gid[8]; # ditto -# char size[12]; # 0 padded, octal, null -# char mtime[12]; # 0 padded, octal, null -# char checksum[8]; # 0 padded, octal, null, space -# char typeflag[1]; # file: "0" dir: "5" -# char linkname[100]; # ASCII + (Z unless filled) -# char magic[6]; # "ustar\0" -# char version[2]; # "00" -# char uname[32]; # ASCIIZ -# char gname[32]; # ASCIIZ -# char devmajor[8]; # 0 padded, octal, null -# char devminor[8]; # o padded, octal, null -# char prefix[155]; # ASCII + (Z unless filled) -# }; -#++ -# A header for a tar file - -class Gem::Package::TarHeader - - ## - # Fields in the tar header - - FIELDS = [ - :checksum, - :devmajor, - :devminor, - :gid, - :gname, - :linkname, - :magic, - :mode, - :mtime, - :name, - :prefix, - :size, - :typeflag, - :uid, - :uname, - :version, - ] - - ## - # Pack format for a tar header - - PACK_FORMAT = 'a100' + # name - 'a8' + # mode - 'a8' + # uid - 'a8' + # gid - 'a12' + # size - 'a12' + # mtime - 'a7a' + # chksum - 'a' + # typeflag - 'a100' + # linkname - 'a6' + # magic - 'a2' + # version - 'a32' + # uname - 'a32' + # gname - 'a8' + # devmajor - 'a8' + # devminor - 'a155' # prefix - - ## - # Unpack format for a tar header - - UNPACK_FORMAT = 'A100' + # name - 'A8' + # mode - 'A8' + # uid - 'A8' + # gid - 'A12' + # size - 'A12' + # mtime - 'A8' + # checksum - 'A' + # typeflag - 'A100' + # linkname - 'A6' + # magic - 'A2' + # version - 'A32' + # uname - 'A32' + # gname - 'A8' + # devmajor - 'A8' + # devminor - 'A155' # prefix - - attr_reader(*FIELDS) - - ## - # Creates a tar header from IO +stream+ - - def self.from(stream) - header = stream.read 512 - empty = (header == "\0" * 512) - - fields = header.unpack UNPACK_FORMAT - - 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+ - - 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" if vals[:typeflag].nil? || vals[:typeflag].empty? - 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 - - ## - # Is the tar entry empty? - - def empty? - @empty - end - - def ==(other) # :nodoc: - self.class === other and - @checksum == other.checksum and - @devmajor == other.devmajor and - @devminor == other.devminor and - @gid == other.gid and - @gname == other.gname and - @linkname == other.linkname and - @magic == other.magic and - @mode == other.mode and - @mtime == other.mtime and - @name == other.name and - @prefix == other.prefix and - @size == other.size and - @typeflag == other.typeflag and - @uid == other.uid and - @uname == other.uname and - @version == other.version - end - - def to_s # :nodoc: - update_checksum - header - end - - ## - # Updates the TarHeader's checksum - - def update_checksum - header = header " " * 8 - @checksum = oct calculate_checksum(header), 6 - end - - private - - def calculate_checksum(header) - header.unpack("C*").inject { |a, b| a + b } - end - - def header(checksum = @checksum) - header = [ - name, - oct(mode, 7), - oct(uid, 7), - oct(gid, 7), - oct(size, 11), - oct(mtime, 11), - checksum, - " ", - typeflag, - linkname, - magic, - oct(version, 2), - uname, - gname, - oct(devmajor, 7), - oct(devminor, 7), - prefix - ] - - header = header.pack PACK_FORMAT - - header << ("\0" * ((512 - header.size) % 512)) - end - - def oct(num, len) - "%0#{len}o" % num - end - -end - |