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

Relationships & Source Files
Inherits: Object
Defined in: lib/rubygems/package/tar_writer.rb

Overview

IO wrapper that allows writing a limited amount of data

Class Method Summary

Instance Attribute Summary

  • #limit readonly

    Maximum number of bytes that can be written.

  • #written readonly

    Number of bytes written.

Instance Method Summary

Constructor Details

.new(io, limit) ⇒ BoundedStream

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

[ GitHub ] 

  


# File 'lib/rubygems/package/tar_writer.rb', line 30



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


  







Instance Attribute Details



  

    #limit   (readonly)
  



  

    

Maximum number of bytes that can be written


  



  [ GitHub ]


  

  


# File 'lib/rubygems/package/tar_writer.rb', line 20



attr_reader :limit


  








  

    #written   (readonly)
  



  

    

Number of bytes written


  



  [ GitHub ]


  

  


# File 'lib/rubygems/package/tar_writer.rb', line 25



attr_reader :written


  







Instance Method Details



  

    #write(data)  
  



  

    

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


  



  [ GitHub ]


  

  


# File 'lib/rubygems/package/tar_writer.rb', line 40



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