# File lib/rchardet/chardistribution.rb, line 174 def get_order(aStr) # for big5 encoding, we are interested # first byte range: 0xa4 -- 0xfe # second byte range: 0x40 -- 0x7e , 0xa1 -- 0xfe # no validation needed here. State machine has done that if aStr[0, 1] >= "\xA4" bytes = aStr.bytes.to_a if aStr[1, 1] >= "\xA1" return 157 * (bytes[0] - 0xA4) + bytes[1] - 0xA1 + 63 else return 157 * (bytes[0] - 0xA4) + bytes[1] - 0x40 end else return -1 end end
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