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#++
# Copyright (C) 2004 Mauricio Julio Fernández Pradier
# See LICENSE.txt for additional licensing information.
#--
require 'rubygems/package'
class Gem::Package::TarReader::Entry
attr_reader :header
def initialize(header, io)
@closed = false
@header = header
@io = io
@orig_pos = @io.pos
@read = 0
end
def check_closed # :nodoc:
raise IOError, "closed #{self.class}" if closed?
end
def bytes_read
@read
end
def close
@closed = true
end
def closed?
@closed
end
def eof?
check_closed
@read >= @header.size
end
def full_name
if @header.prefix != "" then
File.join @header.prefix, @header.name
else
@header.name
end
end
def getc
check_closed
return nil if @read >= @header.size
ret = @io.getc
@read += 1 if ret
ret
end
def directory?
@header.typeflag == "5"
end
def file?
@header.typeflag == "0"
end
def pos
check_closed
bytes_read
end
def read(len = nil)
check_closed
return nil if @read >= @header.size
len ||= @header.size - @read
max_read = [len, @header.size - @read].min
ret = @io.read max_read
@read += ret.size
ret
end
def rewind
check_closed
raise Gem::Package::NonSeekableIO unless @io.respond_to? :pos=
@io.pos = @orig_pos
@read = 0
end
end
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