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//proc/thread-self/root/opt/alt/ruby40/share/rubygems/rubygems/package/tar_reader.rb

Text Base64

# frozen_string_literal: true

# rubocop:disable Style/AsciiComments

# Copyright (C) 2004 Mauricio Julio Fernández Pradier
# See LICENSE.txt for additional licensing information.

# rubocop:enable Style/AsciiComments

##
# TarReader reads tar files and allows iteration over their items

class Gem::Package::TarReader
  include Enumerable

##
  # Creates a new TarReader on +io+ and yields it to the block, if given.

def self.new(io)
    reader = super

return reader unless block_given?

begin
      yield reader
    ensure
      reader.close
    end

nil
  end

attr_reader :io # :nodoc:

##
  # Creates a new tar file reader on +io+ which needs to respond to #pos,
  # #eof?, #read, #getc and #pos=

def initialize(io)
    @io = io
    @init_pos = io.pos
  end

##
  # Close the tar file

def close
  end

##
  # Iterates over files in the tarball yielding each entry

def each
    return enum_for __method__ unless block_given?

until @io.eof? do
      begin
        header = Gem::Package::TarHeader.from @io
      rescue ArgumentError => e
        # Specialize only exceptions from Gem::Package::TarHeader.strict_oct
        raise e unless e.message.match?(/ is not an octal string$/)
        raise Gem::Package::TarInvalidError, e.message
      end

return if header.empty?
      entry = Gem::Package::TarReader::Entry.new header, @io
      yield entry
      entry.close
    end
  end

alias_method :each_entry, :each

##
  # NOTE: Do not call #rewind during #each

def rewind
    if @init_pos == 0
      @io.rewind
    else
      @io.pos = @init_pos
    end
  end

##
  # Seeks through the tar file until it finds the +entry+ with +name+ and
  # yields it.  Rewinds the tar file to the beginning when the block
  # terminates.

def seek(name) # :yields: entry
    found = find do |entry|
      entry.full_name == name
    end

return unless found

yield found
  ensure
    rewind
  end
end

require_relative "tar_reader/entry"

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Name	Size	Perms	Modified	Actions
tar_reader DIR	-	drwxr-xr-x	2026-06-09 07:03:28	Edit Download recursive recursive
digest_io.rb	1.33 KB	lrw-r--r--	2026-05-21 12:15:20	Edit Download recursive recursive
file_source.rb	610 B	lrw-r--r--	2026-05-21 12:15:20	Edit Download recursive recursive
io_source.rb	814 B	lrw-r--r--	2026-05-21 12:15:20	Edit Download recursive recursive
old.rb	3.62 KB	lrw-r--r--	2026-05-21 12:15:20	Edit Download recursive recursive
source.rb	72 B	lrw-r--r--	2026-05-21 12:15:20	Edit Download recursive recursive
tar_header.rb	6.40 KB	lrw-r--r--	2026-05-21 12:15:20	Edit Download recursive recursive
tar_reader.rb	1.95 KB	lrw-r--r--	2026-05-21 12:15:20	Edit Download recursive recursive
tar_writer.rb	7.59 KB	lrw-r--r--	2026-05-21 12:15:20	Edit Download recursive recursive

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