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lib/instream/validate.ex
defmodule Instream.Validate do
@moduledoc """
Validation utility.
"""
@doc """
Validates a database name.
If the validation succeeds the database name will be returned.
Otherwise an `ArgumentError` will be raised.
"""
@spec database!(String.t()) :: String.t()
def database!(database) do
test = ~r/^[a-zA-Z0-9_\-]+$/
if not Regex.match?(test, database) do
raise ArgumentError, "invalid database name: #{inspect(database)}"
end
database
end
end