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diff --git a/lib/linkify/builder.ex b/lib/linkify/builder.ex
index 0ce3661..e15be81 100644
--- a/lib/linkify/builder.ex
+++ b/lib/linkify/builder.ex
@@ -1,165 +1,164 @@
defmodule Linkify.Builder do
@moduledoc """
Module for building the auto generated link.
"""
@doc """
Create a link.
"""
def create_link(text, opts) do
url = add_scheme(text)
[]
|> build_attrs(url, opts, :rel)
|> build_attrs(url, opts, :target)
|> build_attrs(url, opts, :class)
|> build_attrs(url, opts, :href)
|> format_url(text, opts)
end
defp build_attrs(attrs, uri, %{rel: get_rel}, :rel) when is_function(get_rel, 1) do
case get_rel.(uri) do
nil -> attrs
rel -> [{:rel, rel} | attrs]
end
end
defp build_attrs(attrs, _, opts, :rel) do
case Map.get(opts, :rel) do
rel when is_binary(rel) -> [{:rel, rel} | attrs]
_ -> attrs
end
end
defp build_attrs(attrs, _, opts, :target) do
if Map.get(opts, :new_window), do: [{:target, :_blank} | attrs], else: attrs
end
defp build_attrs(attrs, _, opts, :class) do
case Map.get(opts, :class) do
cls when is_binary(cls) -> [{:class, cls} | attrs]
_ -> attrs
end
end
defp build_attrs(attrs, url, opts, :href) do
case Map.get(opts, :href_handler) do
handler when is_function(handler) -> [{:href, handler.(url)} | attrs]
_ -> [{:href, url} | attrs]
end
end
defp add_scheme("http://" <> _ = url), do: url
defp add_scheme("https://" <> _ = url), do: url
defp add_scheme(url), do: "http://" <> url
defp format_url(attrs, url, opts) do
url =
url
|> strip_prefix(Map.get(opts, :strip_prefix, false))
|> truncate(Map.get(opts, :truncate, false))
attrs
|> format_attrs()
|> format_tag(url, opts)
end
defp format_attrs(attrs) do
attrs
- |> Enum.map(fn {key, value} -> ~s(#{key}="#{value}") end)
- |> Enum.join(" ")
+ |> Enum.map_join(" ", fn {key, value} -> ~s(#{key}="#{value}") end)
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
def create_mention_link("@" <> name, _buffer, opts) do
mention_prefix = opts[:mention_prefix]
url = mention_prefix <> name
[]
|> build_attrs(url, opts, :rel)
|> build_attrs(url, opts, :target)
|> build_attrs(url, opts, :class)
|> build_attrs(url, opts, :href)
|> format_mention(name, opts)
end
def create_hashtag_link("#" <> tag, _buffer, opts) do
hashtag_prefix = opts[:hashtag_prefix]
url = hashtag_prefix <> tag
[]
|> build_attrs(url, opts, :rel)
|> build_attrs(url, opts, :target)
|> build_attrs(url, opts, :class)
|> build_attrs(url, opts, :href)
|> format_hashtag(tag, opts)
end
def create_email_link(email, opts) do
[]
|> build_attrs(email, opts, :class)
|> build_attrs("mailto:#{email}", opts, :href)
|> format_email(email, opts)
end
def create_extra_link(uri, opts) do
[]
|> build_attrs(uri, opts, :class)
|> build_attrs(uri, opts, :rel)
|> build_attrs(uri, opts, :target)
|> build_attrs(uri, opts, :href)
|> format_extra(uri, opts)
end
def format_mention(attrs, name, opts) do
attrs
|> format_attrs()
|> format_tag("@#{name}", opts)
end
def format_hashtag(attrs, tag, opts) do
attrs
|> format_attrs()
|> format_tag("##{tag}", opts)
end
def format_email(attrs, email, opts) do
attrs
|> format_attrs()
|> format_tag(email, opts)
end
def format_extra(attrs, uri, opts) do
attrs
|> format_attrs()
|> format_tag(uri, opts)
end
def format_tag(attrs, content, %{iodata: true}) do
["<a ", attrs, ">", content, "</a>"]
end
def format_tag(attrs, content, %{iodata: :safe}) do
[{:safe, ["<a ", attrs, ">"]}, content, {:safe, "</a>"}]
end
def format_tag(attrs, content, _opts) do
"<a #{attrs}>#{content}</a>"
end
end

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