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PostgreSQL driver for Elixir
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lib/postgrex/extensions/raw.ex
defmodule Postgrex.Extensions.Raw do
@moduledoc false
import Postgrex.BinaryUtils, warn: false
use Postgrex.BinaryExtension,
send: "bpcharsend",
send: "textsend",
send: "varcharsend",
send: "byteasend",
send: "enum_send",
send: "unknownsend",
send: "citextsend",
send: "charsend"
def init(opts), do: Keyword.fetch!(opts, :decode_binary)
def encode(_) do
quote location: :keep, generated: true do
bin when is_binary(bin) ->
[<<byte_size(bin)::int32>> | bin]
other ->
raise DBConnection.EncodeError, Postgrex.Utils.encode_msg(other, "a binary")
end
end
def decode(:copy) do
quote location: :keep do
<<len::int32, value::binary-size(len)>> -> :binary.copy(value)
end
end
def decode(:reference) do
quote location: :keep do
<<len::int32, value::binary-size(len)>> -> value
end
end
end