You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
173 lines
4.4 KiB
173 lines
4.4 KiB
defmodule AutoLinker.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
|
|
if rel = Map.get(opts, :rel, "noopener noreferrer"), do: [{:rel, rel} | attrs], else: attrs
|
|
end
|
|
|
|
defp build_attrs(attrs, _, opts, :target) do
|
|
if Map.get(opts, :new_window, true), do: [{:target, :_blank} | attrs], else: attrs
|
|
end
|
|
|
|
defp build_attrs(attrs, _, opts, :class) do
|
|
if cls = Map.get(opts, :class, "auto-linker"), do: [{:class, cls} | attrs], else: attrs
|
|
end
|
|
|
|
defp build_attrs(attrs, url, _opts, :href) do
|
|
[{:href, url} | attrs]
|
|
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, true))
|
|
|> truncate(Map.get(opts, :truncate, false))
|
|
|
|
attrs = format_attrs(attrs)
|
|
"<a #{attrs}>#{url}</a>"
|
|
end
|
|
|
|
defp format_attrs(attrs) do
|
|
attrs
|
|
|> Enum.map(fn {key, value} -> ~s(#{key}="#{value}") end)
|
|
|> Enum.join(" ")
|
|
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_phone_link([], buffer, _), do: buffer
|
|
|
|
def create_phone_link([h | t], buffer, opts) do
|
|
create_phone_link(t, format_phone_link(h, buffer, opts), opts)
|
|
end
|
|
|
|
def format_phone_link([h | _], buffer, opts) do
|
|
val =
|
|
h
|
|
|> String.replace(~r/[\.\+\- x\(\)]+/, "")
|
|
|> format_phone_link(h, opts)
|
|
|
|
# val = ~s'<a href="#" class="phone-number" data-phone="#{number}">#{h}</a>'
|
|
String.replace(buffer, h, val)
|
|
end
|
|
|
|
def format_phone_link(number, original, opts) do
|
|
tag = opts[:tag] || "a"
|
|
class = opts[:class] || "phone-number"
|
|
data_phone = opts[:data_phone] || "data-phone"
|
|
attrs = format_attributes(opts[:attributes] || [])
|
|
href = opts[:href] || "#"
|
|
|
|
~s'<#{tag} href="#{href}" class="#{class}" #{data_phone}="#{number}"#{attrs}>#{original}</#{
|
|
tag
|
|
}>'
|
|
end
|
|
|
|
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(attrs)
|
|
"<a #{attrs}>@#{name}</a>"
|
|
end
|
|
|
|
def format_hashtag(attrs, tag, _opts) do
|
|
attrs = format_attrs(attrs)
|
|
"<a #{attrs}>##{tag}</a>"
|
|
end
|
|
|
|
def format_email(attrs, email, _opts) do
|
|
attrs = format_attrs(attrs)
|
|
~s(<a #{attrs}>#{email}</a>)
|
|
end
|
|
|
|
def format_extra(attrs, uri, _opts) do
|
|
attrs = format_attrs(attrs)
|
|
~s(<a #{attrs}>#{uri}</a>)
|
|
end
|
|
|
|
defp format_attributes(attrs) do
|
|
Enum.reduce(attrs, "", fn {name, value}, acc ->
|
|
acc <> ~s' #{name}="#{value}"'
|
|
end)
|
|
end
|
|
end
|