Class: Gem::Package::TarWriter::BoundedStream

Inherits:

Object

• Object
• Gem::Package::TarWriter::BoundedStream

show all

Defined in:

lib/rubygems/package/tar_writer.rb

Overview

Instance Attribute Summary (collapse)

• - (Object) limit readonly

  Maximum number of bytes that can be written.

• - (Object) written readonly

  Number of bytes written.

Instance Method Summary (collapse)

• - (BoundedStream) initialize(io, limit) constructor

  Wraps io and allows up to limit bytes to be written.

• - (Object) write(data)

  Writes data onto the IO, raising a FileOverflow exception if the number of bytes will be more than #limit.

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# File 'lib/rubygems/package/tar_writer.rb', line 32

def initialize(io, limit)
  @io = io
  @limit = limit
  @written = 0
end

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# File 'lib/rubygems/package/tar_writer.rb', line 22

def limit
  @limit
end

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# File 'lib/rubygems/package/tar_writer.rb', line 27

def written
  @written
end

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# File 'lib/rubygems/package/tar_writer.rb', line 42

def write(data)
  # XXX MACRUBY mainly because our File.open won't honor 'b'.
  data = data.force_encoding('BINARY')

  if data.size + @written > @limit
    raise FileOverflow, "You tried to feed more data than fits in the file."
  end
  @io.write data
  @written += data.size
  data.size
end