Class: OdpsDatahub::CrcCalculator

Inherits:
Object
  • Object
show all
Defined in:
lib/fluent/plugin/crc/crc.rb

Class Method Summary collapse

Class Method Details

.calculate(data) ⇒ Object

Returns crc32c to_i.

Parameters:

  • data (StringIO)

Returns:

  • crc32c to_i



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# File 'lib/fluent/plugin/crc/crc.rb', line 24

def self.calculate(data)
  if (!$USE_FAST_CRC)
    require_relative 'origin/crc32c'
    crc32c = Digest::CRC32c.new
    crc32c.update(data.string)
    return crc32c.checksum.to_i
  elsif getOsType == "linux" || getOsType == "unix"
    require_relative 'lib/linux/crc32c.so'
    return Crc32c.calculate(data.string, data.length, 0).to_i
  elsif getOsType == "windows"
    require_relative 'lib/win/crc32c.so'
    return Crc32c.calculate(data.string, data.length, 0).to_i
  end
end

.getOsType ⇒ Object 



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# File 'lib/fluent/plugin/crc/crc.rb', line 39

def self.getOsType
  host_os = RbConfig::CONFIG['host_os']
  case host_os
    when /mswin|msys|mingw|cygwin|bccwin|wince|emc/
      "windows"
    when /linux/
      "linux"
    when /solaris|bsd/
      "unix"
    else
      raise Error::WebDriverError, "unspport os"
  end
end