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CharDet::GB2312DistributionAnalysis

Public Class Methods

new() click to toggle source
# File lib/tmail/vendor/rchardet-1.3/lib/rchardet/chardistribution.rb, line 144
def initialize
  super()
  @_mCharToFreqOrder = GB2312CharToFreqOrder
  @_mTableSize = GB2312_TABLE_SIZE
  @_mTypicalDistributionRatio = GB2312_TYPICAL_DISTRIBUTION_RATIO
end

Public Instance Methods

get_order(aStr) click to toggle source
# File lib/tmail/vendor/rchardet-1.3/lib/rchardet/chardistribution.rb, line 151
def get_order(aStr)
  # for GB2312 encoding, we are interested 
  #  first  byte range: 0xb0 -- 0xfe
  #  second byte range: 0xa1 -- 0xfe
  # no validation needed here. State machine has done that
  if (aStr[0..0] >= "\xB0") and (aStr[1..1] >= "\xA1")
    return 94 * (aStr[0] - 0xB0) + aStr[1] - 0xA1
  else
    return -1
  end
end

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