31 lines
689 B
Elixir
31 lines
689 B
Elixir
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defmodule ActivityPub.Headers.SignatureSplitter do
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def split(""), do: []
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def split(value) do
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{key_value, rest} = scan_until(value, ",")
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{key, value} = split_kv(key_value)
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[{key, value} | split(rest)]
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end
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defp split_kv(kv_string) do
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{key, wrapped_value} = scan_until(kv_string, "=")
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value = String.trim(wrapped_value, ~s("))
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{key, value}
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end
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def scan_until(buffer, terminator, acc \\ "")
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def scan_until("", _terminator, acc), do: {acc, ""}
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def scan_until(<<ch::utf8, buffer::binary>>, terminator, acc) do
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ch = <<ch>>
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if ch == terminator do
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{acc, buffer}
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else
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scan_until(buffer, terminator, acc <> ch)
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end
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end
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end
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