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defmodule Utils.File do |
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import Enum, only: [map: 2, find_value: 2] |
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import File, only: [read: 1] |
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import Path, only: [expand: 2, wildcard: 1, join: 2] |
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@app_root expand("../..", __DIR__) |
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@repo_root expand("../../../..", __DIR__) |
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@paths [ |
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"", |
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"agents/", |
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"test/specs/" |
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] |
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def file(name) do |
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paths(name) |
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|> find_value(&fetch/1) |
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|> ensure(name) |
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end |
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defp paths(name) do |
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map(@paths, fn path -> concat("#{@app_root}/#{path}", name) end) ++ |
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nested(name) ++ |
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rooted(name) |
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end |
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defp nested(name) do |
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wildcard(join(@app_root, "agents/**/#{name}")) |
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end |
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defp rooted(name) do |
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wildcard(join(@repo_root, "agents/**/#{name}")) |
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end |
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defp ensure(nil, name), do: "file not found: #{name}" |
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defp ensure(content, _name), do: content |
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defp concat(path, name), do: "#{path}#{name}" |
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defp fetch({:ok, content}), do: content |
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defp fetch({:error, _}), do: nil |
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defp fetch(path) do |
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read(path) |> fetch() |
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end |
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end |