\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5×\D6?\BDê\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2€ \00 $\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4ê\E9\F2á\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// # -*- coding: utf-8 -*- # frozen_string_literal: true #-- # 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, ].freeze ## # 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) EMPTY_HEADER = ("\0" * 512).freeze # :nodoc: ## # Creates a tar header from IO +stream+ def self.from(stream) header = stream.read 512 empty = (EMPTY_HEADER == header) fields = header.unpack UNPACK_FORMAT new :name => fields.shift, :mode => strict_oct(fields.shift), :uid => oct_or_256based(fields.shift), :gid => oct_or_256based(fields.shift), :size => strict_oct(fields.shift), :mtime => strict_oct(fields.shift), :checksum => strict_oct(fields.shift), :typeflag => fields.shift, :linkname => fields.shift, :magic => fields.shift, :version => strict_oct(fields.shift), :uname => fields.shift, :gname => fields.shift, :devmajor => strict_oct(fields.shift), :devminor => strict_oct(fields.shift), :prefix => fields.shift, :empty => empty end def self.strict_oct(str) return str.oct if str =~ /\A[0-7]*\z/ raise ArgumentError, "#{str.inspect} is not an octal string" end def self.oct_or_256based(str) # \x80 flags a positive 256-based number # \ff flags a negative 256-based number # In case we have a match, parse it as a signed binary value # in big-endian order, except that the high-order bit is ignored. return str.unpack('N2').last if str =~ /\A[\x80\xff]/n strict_oct(str) end ## # Creates a new TarHeader using +vals+ def initialize(vals) unless vals[:name] && vals[:size] && vals[:prefix] && vals[:mode] 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" va