Class: Gem::Package::IOSource

Inherits:
Source
  • Object
show all
Defined in:
lib/rubygems/package/io_source.rb

Overview

Supports reading and writing gems from/to a generic IO object. This is useful for other applications built on top of rubygems, such as rubygems.org.

This is a private class, do not depend on it directly. Instead, pass an IO object to `Gem::Package.new`.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(io) ⇒ IOSource

Returns a new instance of IOSource.



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# File 'lib/rubygems/package/io_source.rb', line 13

def initialize(io)
  @io = io
end

Instance Attribute Details

#io ⇒ Object (readonly)

:nodoc: all



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# File 'lib/rubygems/package/io_source.rb', line 11

def io
  @io
end

Instance Method Details

#path ⇒ Object 



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# File 'lib/rubygems/package/io_source.rb', line 45

def path
end

#present? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubygems/package/io_source.rb', line 29

def present?
  true
end

#start ⇒ Object 



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# File 'lib/rubygems/package/io_source.rb', line 17

def start
  @start ||= begin
    if io.pos > 0
      raise Gem::Package::Error, "Cannot read start unless IO is at start"
    end

    value = io.read 20
    io.rewind
    value
  end
end

#with_read_io ⇒ Object 



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# File 'lib/rubygems/package/io_source.rb', line 33

def with_read_io
  yield io
ensure
  io.rewind
end

#with_write_io ⇒ Object 



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# File 'lib/rubygems/package/io_source.rb', line 39

def with_write_io
  yield io
ensure
  io.rewind
end