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Interface for HTTP webservers, frameworks and clients.
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lib/eex/html/safe.ex
defprotocol EEx.HTML.Safe do
@moduledoc """
Protocol to create safe HTML encoding of datastrutures.
"""
@fallback_to_any true
defstruct [:data]
@doc """
Converts a term to iodata.
If this protocol is not implemented it falls back to `String.Chars.to_string/1`
and handles html escaping.
"""
def to_iodata(raw)
end
defimpl EEx.HTML.Safe, for: EEx.HTML.Safe do
def to_iodata(%{data: data}), do: data
end
defimpl EEx.HTML.Safe, for: Any do
def to_iodata(term), do: String.Chars.to_string(term) |> EEx.HTML.escape_to_iodata()
end
defimpl String.Chars, for: EEx.HTML.Safe do
def to_string(%{data: data}) do
IO.iodata_to_binary(data)
end
end