文件操作 - posix.rb

文件: /opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/file_system/posix.rb

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# frozen_string_literal: true

class Puppet::FileSystem::Posix < Puppet::FileSystem::FileImpl
  def binread(path)
    path.binread
  end

# Provide an encoding agnostic version of compare_stream
  #
  # The FileUtils implementation in Ruby 2.0+ was modified in a manner where
  # it cannot properly compare File and StringIO instances. To sidestep that
  # issue this method reimplements the faster 2.0 version that will correctly
  # compare binary File and StringIO streams.
  def compare_stream(path, stream)
    ::File.open(path, 'rb') do |this|
      bsize = stream_blksize(this, stream)
      sa = String.new.force_encoding('ASCII-8BIT')
      sb = String.new.force_encoding('ASCII-8BIT')
      loop do
        this.read(bsize, sa)
        stream.read(bsize, sb)
        return true if sa.empty? && sb.empty?
        break if sa != sb
      end
      false
    end
  end

private

def stream_blksize(*streams)
    streams.each do |s|
      next unless s.respond_to?(:stat)

size = blksize(s.stat)
      return size if size
    end
    default_blksize()
  end

def blksize(st)
    s = st.blksize
    return nil unless s
    return nil if s == 0

s
  end

def default_blksize
    1024
  end
end

文件操作 - posix.rb

文件: /opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/file_system/posix.rb

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