Class: IPFS::IO::ReadFromWriterIO

Inherits:
Object
  • Object
show all
Defined in:
lib/ipfs-api/io.rb

Overview

:nodoc:

Instance Method Summary collapse

Constructor Details

#initialize(&block) ⇒ ReadFromWriterIO

Returns a new instance of ReadFromWriterIO.



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# File 'lib/ipfs-api/io.rb', line 8

def initialize &block
  @block = block
  @stream = StringIO.new
  fetch_data
end

Instance Method Details

#read(length = nil, outbuf = '') ⇒ Object 



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# File 'lib/ipfs-api/io.rb', line 14

def read length = nil, outbuf = ''
  return nil if @stream.size == 0
  outbuf.slice!(length..-1) if !length.nil?
  q = 0
  while @stream.size > 0
    s = @stream.size - @p
    s = [length - q, s].min if !length.nil?
    outbuf[q, s] = @stream.string[@p, s]
    @p += s
    q += s
    break if q == length
    fetch_data if @stream.size == @p
  end
  outbuf
end