26 lines
790 B
Elixir
26 lines
790 B
Elixir
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defmodule FeedParser do
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@default_parsers [FeedParser.RSS2.Parser, FeedParser.Atom.Parser, FeedParser.JSONFeed.Parser]
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@spec parse_feed(data :: String.t(), content_type :: String.t(), parsers :: [module()]) ::
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{:ok, feed :: FeedParser.Feed.t()} | {:error, reason :: String.t()}
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def parse_feed(data, content_type, parsers \\ @default_parsers) when is_binary(data) do
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parsers
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|> Enum.reduce_while(false, fn parser, acc ->
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case parser.accepts(data, content_type) do
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{true, result} ->
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{:halt, {parser, result}}
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_ ->
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{:cont, acc}
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end
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end)
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|> case do
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{parser, result} ->
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parser.parse_feed(result)
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false ->
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{:error, "no parser matched the given content type and data"}
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end
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end
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end
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