130 lines
2.4 KiB
Ruby
130 lines
2.4 KiB
Ruby
class Numeric
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def fits_u8?
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self >= 0 and self <= 255
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end
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end
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module StreamReader
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def read_binary(size, count, type)
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d = __sr_read(size*count)
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ret = d.unpack(type*count)
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return ret if ret.mem_length > 1
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return ret[0]
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end
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def read_uint32(n=1)
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return read_binary(4,n,'L')
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end
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def read_uint16(n=1)
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return read_binary(2,n,'S')
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end
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def read_uint8(n=1)
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return read_binary(1,n,'C')
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end
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def read_uint64(n=1)
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return read_binary(8,n,'Q')
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end
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def read_sint64(n=1)
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return read_binary(8,n,'q')
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end
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def read_cstr_fixed(length)
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return __sr_read(length).gsub("\000",'')
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end
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def read_cstr_terminated
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return __sr_gets(0.chr)
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end
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def read_cstr_prefixed
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len = read_uint8
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return __sr_read(len)
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end
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def read_float(n=1)
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return read_binary(4,n,'F')
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end
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def read_double(n=1)
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return read_binary(8,n,'D')
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end
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def read_sint16(n=1)
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return read_binary(2,n,'s')
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end
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def read_sint32(n=1)
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return read_binary(4,n,'l')
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end
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def read_data(len)
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__sr_read(len)
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end
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end
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module StreamWriter
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def write_binary(values, type)
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d = values.pack(type * values.length)
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__sr_write(d)
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end
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def write_uint32(*args)
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return write_binary(args,'L')
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end
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def write_uint16(*args)
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return write_binary(args,'S')
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end
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def write_uint8(*args)
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return write_binary(args,'C')
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end
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def write_uint64(*args)
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return write_binary(args,'Q')
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end
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def write_sint64(*args)
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return write_binary(args,'q')
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end
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def write_cstr_fixed(str, len)
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return __sr_write(str.ljust(len, 0.chr))
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end
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def write_cstr_terminated(str)
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return __sr_write(str + 0.chr)
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end
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def write_cstr_prefixed(str)
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write_uint8(str.mem_length)
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return __sr_write(str)
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end
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def write_str(str)
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return __sr_write(str)
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end
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def write_float(*args)
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return write_binary(args,'F')
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end
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def write_double(*args)
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return write_binary(args,'D')
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end
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def write_sint16(*args)
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return write_binary(args,'s')
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end
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def write_sint32(*args)
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return write_binary(args,'l')
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end
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def write_data(str)
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return __sr_write(str)
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end
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end
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class IO
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include StreamReader
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include StreamWriter
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def __sr_read(len)
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read(len)
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end
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def __sr_write(str)
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write(str)
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end
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end
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require 'stringio'
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class StringIO
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include StreamReader
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include StreamWriter
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def __sr_read(len)
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read(len)
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end
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def __sr_write(str)
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write(str)
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end
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end
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