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Contents
module RubySMB
module Field
# Represents a NULL-Terminated String in UTF-16
class Stringz16 < BinData::Stringz
def assign(val)
super(binary_string(val.encode("utf-16le")))
end
def snapshot
# override to always remove trailing zero bytes
result = _value
result
result = trim_and_zero_terminate(result)
result.chomp("\0\0").force_encoding("utf-16le")
end
private
def append_zero_byte_if_needed!(str)
if str.length == 0 || !(str.end_with?("\0\0"))
str << "\0\0"
end
end
# Override parent on {BinData::Stringz} to use
# a double NULL-byte instead of a single NULL-byte
# as a terminator
# @see BinData::Stringz
def read_and_return_value(io)
max_length = eval_parameter(:max_length)
str = ''
i = 0
ch = nil
# read until double NULL-byte or we have read in the max number of bytes
while (ch != "\0\0") && (i != max_length)
ch = io.readbytes(2)
str << ch
i += 2
end
trim_and_zero_terminate(str)
end
# Override parent method of #truncate_after_first_zero_byte! on
# {BinData::Stringz} to use two consecutive NULL-bytes as the terimnator
# instead of a single NULL-nyte.
# @see BinData::Stringz
def truncate_after_first_zero_byte!(str)
str.sub!(/([^\0]*\0\0\0).*/, '\1')
end
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems