53 lines
1.5 KiB
Elixir
53 lines
1.5 KiB
Elixir
defmodule RDF.Reader do
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@moduledoc false
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@callback read_file(String.t, keyword) :: keyword(RDF.Graph)
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@callback read_file!(String.t, keyword) :: RDF.Graph
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@callback read_string(String.t, keyword) :: keyword(RDF.Graph)
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@callback read_string!(String.t, keyword) :: RDF.Graph
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defmacro __using__(_) do
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quote bind_quoted: [], unquote: true do
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@behaviour unquote(__MODULE__)
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def read(file_or_content, opts \\ []) do
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if File.exists?(file_or_content) do
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read_file(file_or_content, opts)
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else
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read_string(file_or_content, opts)
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end
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end
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def read!(file_or_content, opts \\ []) do
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case read(file_or_content, opts) do
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{:ok, graph} -> graph
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{:error, reason} -> raise reason
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end
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end
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def read_file(file, opts \\ []) do
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case File.read(file) do
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{:ok, content} -> read_string(content, opts)
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{:error, reason} -> {:error, reason}
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end
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end
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def read_file!(file, opts \\ []) do
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case read_file(file, opts) do
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{:ok, graph} -> graph
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{:error, reason} -> raise File.Error, path: file, action: "read", reason: reason
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end
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end
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def read_string!(content, opts \\ []) do
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case read_string(content, opts) do
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{:ok, graph} -> graph
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{:error, reason} -> raise reason
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end
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end
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defoverridable [read: 2, read!: 2, read_file: 2, read_file!: 2, read_string!: 2]
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end
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end
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end
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