Parent

BSON::ByteBuffer

Attributes

max_size[R]
order[R]

Public Class Methods

new(initial_data="", max_size=DEFAULT_MAX_BSON_SIZE) click to toggle source
# File lib/bson/byte_buffer.rb, line 11
def initialize(initial_data="", max_size=DEFAULT_MAX_BSON_SIZE)
  @str = case initial_data
    when String then
      if initial_data.respond_to?(:force_encoding)
        initial_data.force_encoding('binary')
      else
        initial_data
      end
    when BSON::ByteBuffer then
      initial_data.to_a.pack('C*')
    else
      initial_data.pack('C*')
  end

  @cursor = @str.length
  @max_size = max_size
end

Public Instance Methods

==(other) click to toggle source
# File lib/bson/byte_buffer.rb, line 181
def ==(other)
  other.respond_to?(:to_s) && @str == other.to_s
end
append!(buffer) click to toggle source

Appends a second ByteBuffer object, buffer, to the current buffer.

# File lib/bson/byte_buffer.rb, line 53
def append!(buffer)
  @str << buffer.to_s
  self
end
clear() click to toggle source
# File lib/bson/byte_buffer.rb, line 41
def clear
  @str = ""
  @str.force_encoding('binary') if @str.respond_to?(:force_encoding)
  rewind
end
dump() click to toggle source
# File lib/bson/byte_buffer.rb, line 197
def dump
  @str.each_byte do |c, i|
    $stderr.puts "#{'%04d' % i}: #{'%02x' % c} #{'%03o' % c} #{'%s' % c.chr} #{'%3d' % c}"
    i += 1
  end
end
get(len=nil) click to toggle source
# File lib/bson/byte_buffer.rb, line 129
def get(len=nil)
  one_byte = len.nil?
  len ||= 1
  check_read_length(len)
  start = @cursor
  @cursor += len
  if one_byte
    @str[start]
  else
    @str[start, len].unpack("C*")
  end
end
get_double() click to toggle source
# File lib/bson/byte_buffer.rb, line 170
def get_double
  check_read_length(8)
  vals = @str[@cursor..@cursor+7]
  @cursor += 8
  vals.unpack(DOUBLE_PACK)[0]
end
get_int() click to toggle source
# File lib/bson/byte_buffer.rb, line 156
def get_int
  check_read_length(4)
  vals = @str[@cursor..@cursor+3]
  @cursor += 4
  vals.unpack(INT32_PACK)[0]
end
get_long() click to toggle source
# File lib/bson/byte_buffer.rb, line 163
def get_long
  check_read_length(8)
  vals = @str[@cursor..@cursor+7]
  @cursor += 8
  vals.unpack(INT64_PACK)[0]
end
length() click to toggle source
Alias for: size
more?() click to toggle source
# File lib/bson/byte_buffer.rb, line 177
def more?
  @cursor < @str.size
end
position() click to toggle source
# File lib/bson/byte_buffer.rb, line 33
def position
  @cursor
end
position=(val) click to toggle source
# File lib/bson/byte_buffer.rb, line 37
def position=(val)
  @cursor = val
end
prepend!(buffer) click to toggle source

Prepends a second ByteBuffer object, buffer, to the current buffer.

# File lib/bson/byte_buffer.rb, line 59
def prepend!(buffer)
  @str = buffer.to_s + @str
  self
end
put(byte, offset=nil) click to toggle source
# File lib/bson/byte_buffer.rb, line 64
def put(byte, offset=nil)
  @cursor = offset if offset
  if more?
    @str[@cursor] = chr(byte)
  else
    ensure_length(@cursor)
    @str << chr(byte)
  end
  @cursor += 1
end
put_array(array, offset=nil) click to toggle source
# File lib/bson/byte_buffer.rb, line 89
def put_array(array, offset=nil)
  @cursor = offset if offset
  if more?
    @str[@cursor, array.length] = array.pack("C*")
  else
    ensure_length(@cursor)
    @str << array.pack("C*")
  end
  @cursor += array.length
end
put_binary(data, offset=nil) click to toggle source
# File lib/bson/byte_buffer.rb, line 75
def put_binary(data, offset=nil)
  @cursor = offset if offset
  if defined?(BINARY_ENCODING)
    data = data.dup.force_encoding(BINARY_ENCODING)
  end
  if more?
    @str[@cursor, data.length] = data
  else
    ensure_length(@cursor)
    @str << data
  end
  @cursor += data.length
end
put_double(d, offset=nil) click to toggle source
# File lib/bson/byte_buffer.rb, line 120
def put_double(d, offset=nil)
  a = []
  [d].pack(DOUBLE_PACK).each_byte { |b| a << b }
  put_array(a, offset)
end
put_int(i, offset=nil) click to toggle source
# File lib/bson/byte_buffer.rb, line 112
def put_int(i, offset=nil)
  put_num(i, offset, 4)
end
put_long(i, offset=nil) click to toggle source
# File lib/bson/byte_buffer.rb, line 116
def put_long(i, offset=nil)
  put_num(i, offset, 8)
end
put_num(i, offset, bytes) click to toggle source
# File lib/bson/byte_buffer.rb, line 100
def put_num(i, offset, bytes)
  pack_type = bytes == 4 ? INT32_PACK : INT64_PACK
  @cursor = offset if offset
  if more?
    @str[@cursor, bytes] = [i].pack(pack_type)
  else
    ensure_length(@cursor)
    @str << [i].pack(pack_type)
  end
  @cursor += bytes
end
rewind() click to toggle source
# File lib/bson/byte_buffer.rb, line 29
def rewind
  @cursor = 0
end
size() click to toggle source
# File lib/bson/byte_buffer.rb, line 47
def size
  @str.size
end
Also aliased as: length
to_a(format="C*") click to toggle source
# File lib/bson/byte_buffer.rb, line 185
def to_a(format="C*")
  @str.unpack(format)
end
to_s() click to toggle source
# File lib/bson/byte_buffer.rb, line 193
def to_s
  @str
end
unpack(format="C*") click to toggle source
# File lib/bson/byte_buffer.rb, line 189
def unpack(format="C*")
  to_a(format)
end

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