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defmodule Glob do |
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import String, only: [contains?: 2] |
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import Path, only: [split: 1] |
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def hits?(path, pattern) do |
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match(split(path), split(pattern)) |
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end |
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def wild?(pattern) do |
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contains?(pattern, ["*", "**"]) |
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end |
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def match(_, []), do: true |
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def match([], ["**" | t]), do: match([], t) |
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def match([], _), do: false |
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def match(e, ["**" | t]), do: unwind(match(e, t), e, t) |
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def match([_ | et], ["*" | pt]), do: match(et, pt) |
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def match([eh | et], [eh | pt]), do: match(et, pt) |
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def match([_ | _], [_ | _]), do: false |
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def unwind(true, _e, _t), do: true |
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def unwind(false, [_ | et], t), do: match(et, ["**" | t]) |
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def unwind(false, [], _t), do: false |
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end |