53 lines
1.4 KiB
Elixir
53 lines
1.4 KiB
Elixir
defmodule BDS.Rendering.FileSystem do
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@moduledoc false
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defstruct [:root_paths]
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def new(root_paths) when is_list(root_paths) do
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%__MODULE__{root_paths: Enum.uniq(root_paths)}
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end
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def new(root_path) when is_binary(root_path) do
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new([root_path])
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end
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def full_path(%__MODULE__{root_paths: root_paths}, template_path) do
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normalized_path = to_string(template_path)
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cond do
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normalized_path == "" ->
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raise Liquex.Error, message: "Illegal template path '#{template_path}'"
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Path.type(normalized_path) == :absolute ->
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raise Liquex.Error, message: "Illegal template path '#{template_path}'"
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String.contains?(normalized_path, "..") ->
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raise Liquex.Error, message: "Illegal template path '#{template_path}'"
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true ->
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root_paths
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|> Enum.map(&Path.expand(Path.join(&1, normalized_path <> ".liquid")))
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|> Enum.find(&File.regular?/1)
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|> case do
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nil ->
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Path.expand(Path.join(List.first(root_paths) || ".", normalized_path <> ".liquid"))
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path ->
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path
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end
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end
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end
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end
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defimpl Liquex.FileSystem, for: BDS.Rendering.FileSystem do
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def read_template_file(file_system, template_path) do
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file_system
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|> BDS.Rendering.FileSystem.full_path(template_path)
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|> File.read()
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|> case do
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{:ok, contents} -> contents
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_error -> raise Liquex.Error, message: "No such template '#{template_path}'"
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end
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end
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end
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