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module Plum
module BinaryString
refine String do
def uint8(pos = 0)
byteslice(pos, 1).unpack("C")[0]
end
def uint16(pos = 0)
byteslice(pos, 2).unpack("n")[0]
end
def uint24(pos = 0)
(uint16(pos) << 8) | uint8(pos + 2)
end
def uint32(pos = 0)
byteslice(pos, 4).unpack("N")[0]
end
def push_uint8(val)
self << [val].pack("C")
end
def push_uint16(val)
self << [val].pack("n")
end
def push_uint24(val)
push_uint16(val >> 8)
push_uint8(val & ((1 << 8) - 1))
end
def push_uint32(val)
self << [val].pack("N")
end
alias push <<
def shift(count)
enc = self.encoding
force_encoding(Encoding::BINARY)
out = slice!(0, count)
force_encoding(enc)
out
end
end
end
end
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