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diff --git a/lib/auto_linker.ex b/lib/auto_linker.ex
index 7cf24fb..1678131 100644
--- a/lib/auto_linker.ex
+++ b/lib/auto_linker.ex
@@ -1,73 +1,94 @@
defmodule AutoLinker do
@moduledoc """
- Documentation for AutoLinker.
+ Create url links from text containing urls.
+
+ Turns an input string like `"Check out google.com"` into
+ `Check out `"<a href='http://google.com' target='_blank' rel='noopener noreferrer'>google.com</a>"`
+
+ ## Examples
+
+ iex> AutoLinker.link("google.com")
+ "<a href='http://google.com' class='auto-linker' target='_blank' rel='noopener noreferrer'>google.com</a>"
+
+ iex> AutoLinker.link("google.com", new_window: false, rel: false)
+ "<a href='http://google.com' class='auto-linker'>google.com</a>"
+
+ iex> AutoLinker.link("google.com", new_window: false, rel: false, class: false)
+ "<a href='http://google.com'>google.com</a>"
"""
+ @doc """
+ Auto link a string.
+ """
def link(text, opts \\ []) do
opts =
- :url_linker
+ :auto_linker
|> Application.get_all_env()
|> Keyword.merge(opts)
- # rel = opts[:rel] || "noopener noreferrer"
- # new_window if opts[:target]
+ parse text, opts
end
# state = {buffer, acc, state}
defp parse(text, opts) do
- parse(text, Keyword.get(opts, :scheme, false), {"", "", false})
+ parse(text, Keyword.get(opts, :scheme, false), opts, {"", "", false})
end
- defp parse("", _scheme, opts ,{_, acc, _}), do: acc
+ defp parse("", _scheme, _opts ,{_, acc, _}), do: acc
defp parse(text, scheme, opts, {buffer, acc, state}) do
- acc <> create_link(text, opts)
+ acc = acc <> create_link(text, opts)
parse("", scheme, opts, {buffer, acc, state})
end
defp create_link(url, opts) do
[]
|> build_attrs(url, opts, :rel)
|> build_attrs(url, opts, :target)
+ |> build_attrs(url, opts, :class)
|> build_attrs(url, opts, :scheme)
- |> build_url(url, opts)
+ |> format_url(url, opts)
end
defp build_attrs(attrs, _, opts, :rel) do
if rel = Keyword.get(opts, :rel, "noopener noreferrer"),
do: [{:rel, rel} | attrs], else: attrs
end
defp build_attrs(attrs, _, opts, :target) do
if Keyword.get(opts, :new_window, true),
do: [{:target, :_blank} | attrs], else: attrs
end
- defp build_attrs(attrs, url, opts, :scheme) do
+ defp build_attrs(attrs, _, opts, :class) do
+ if cls = Keyword.get(opts, :class, "auto-linker"),
+ do: [{:class, cls} | attrs], else: attrs
+ end
+ defp build_attrs(attrs, url, _opts, :scheme) do
if String.starts_with?(url, ["http://", "https://"]),
do: [{:href, url} | attrs], else: [{:href, "http://" <> url} | attrs]
end
defp format_url(attrs, url, opts) do
url =
url
|> strip_prefix(Keyword.get(opts, :strip_prefix, true))
|> truncate(Keyword.get(opts, :truncate, false))
attrs =
attrs
|> Enum.map(fn {key, value} -> ~s(#{key}='#{value}') end)
|> Enum.join(" ")
"<a #{attrs}>" <> url <> "</a>"
end
defp truncate(url, false), do: url
defp truncate(url, len) when len < 3, do: url
defp truncate(url, len) do
if String.length(url) > len, do: String.slice(url, 0, len - 2) <> "..", else: url
end
defp strip_prefix(url, true) do
url
|> String.replace(~r/^https?:\/\//, "")
|> String.replace(~r/^www\./, "")
end
defp strip_prefix(url, _), do: url
end
diff --git a/test/auto_linker_test.exs b/test/auto_linker_test.exs
index c4928c3..15dd8a4 100644
--- a/test/auto_linker_test.exs
+++ b/test/auto_linker_test.exs
@@ -1,8 +1,6 @@
defmodule AutoLinkerTest do
use ExUnit.Case
doctest AutoLinker
- test "the truth" do
- assert 1 + 1 == 2
- end
+
end

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