+ def get_emoji(_), do: []
+
+ @link_regex ~r/[0-9a-z+\-\.]+:[0-9a-z$-_.+!*'(),]+/ui
+
+ @uri_schemes Application.get_env(:pleroma, :uri_schemes, [])
+ @valid_schemes Keyword.get(@uri_schemes, :valid_schemes, [])
+
+ # TODO: make it use something other than @link_regex
+ def html_escape(text, "text/html") do
+ HTML.filter_tags(text)
+ end
+
+ def html_escape(text, "text/plain") do
+ Regex.split(@link_regex, text, include_captures: true)
+ |> Enum.map_every(2, fn chunk ->
+ {:safe, part} = Phoenix.HTML.html_escape(chunk)
+ part
+ end)
+ |> Enum.join("")
+ end
+
+ @doc """
+ Escapes a special characters in mention names.
+ """
+ @spec mentions_escape(String.t(), list({String.t(), any()})) :: String.t()
+ def mentions_escape(text, mentions) do
+ mentions
+ |> Enum.reduce(text, fn {name, _}, acc ->
+ escape_name = String.replace(name, @markdown_characters_regex, "\\\\\\1")
+ String.replace(acc, name, escape_name)
+ end)
+ end
+
+ @doc "changes scheme:... urls to html links"
+ def add_links({subs, text}) do
+ links =
+ text
+ |> String.split([" ", "\t", "<br>"])
+ |> Enum.filter(fn word -> String.starts_with?(word, @valid_schemes) end)
+ |> Enum.filter(fn word -> Regex.match?(@link_regex, word) end)
+ |> Enum.map(fn url -> {Ecto.UUID.generate(), url} end)
+ |> Enum.sort_by(fn {_, url} -> -String.length(url) end)
+
+ uuid_text =
+ links
+ |> Enum.reduce(text, fn {uuid, url}, acc -> String.replace(acc, url, uuid) end)
+
+ subs =
+ subs ++
+ Enum.map(links, fn {uuid, url} ->
+ {uuid, "<a href=\"#{url}\">#{url}</a>"}
+ end)
+
+ {subs, uuid_text}
+ end
+
+ @doc "Adds the links to mentioned users"
+ def add_user_links({subs, text}, mentions) do
+ mentions =
+ mentions
+ |> Enum.sort_by(fn {name, _} -> -String.length(name) end)
+ |> Enum.map(fn {name, user} -> {name, user, Ecto.UUID.generate()} end)
+
+ uuid_text =
+ mentions
+ |> Enum.reduce(text, fn {match, _user, uuid}, text ->
+ String.replace(text, match, uuid)
+ end)
+
+ subs =
+ subs ++
+ Enum.map(mentions, fn {match, %User{id: id, ap_id: ap_id, info: info}, uuid} ->
+ ap_id =
+ if is_binary(info.source_data["url"]) do
+ info.source_data["url"]
+ else
+ ap_id
+ end
+
+ short_match = String.split(match, "@") |> tl() |> hd()
+
+ {uuid,
+ "<span><a data-user='#{id}' class='mention' href='#{ap_id}'>@<span>#{short_match}</span></a></span>"}
+ end)
+
+ {subs, uuid_text}
+ end
+
+ @doc "Adds the hashtag links"
+ def add_hashtag_links({subs, text}, tags) do
+ tags =
+ tags
+ |> Enum.sort_by(fn {name, _} -> -String.length(name) end)
+ |> Enum.map(fn {name, short} -> {name, short, Ecto.UUID.generate()} end)
+
+ uuid_text =
+ tags
+ |> Enum.reduce(text, fn {match, _short, uuid}, text ->
+ String.replace(text, match, uuid)
+ end)
+
+ subs =
+ subs ++
+ Enum.map(tags, fn {tag_text, tag, uuid} ->
+ url =
+ "<a data-tag='#{tag}' href='#{Pleroma.Web.base_url()}/tag/#{tag}' rel='tag'>#{
+ tag_text
+ }</a>"
+
+ {uuid, url}
+ end)
+
+ {subs, uuid_text}
+ end
+
+ def finalize({subs, text}) do
+ Enum.reduce(subs, text, fn {uuid, replacement}, result_text ->
+ String.replace(result_text, uuid, replacement)
+ end)
+ end
+
+ def truncate(text, opts \\ []) do
+ max_length = opts[:max_length] || 200
+ omission = opts[:omission] || "..."
+
+ cond do
+ not String.valid?(text) ->
+ text
+
+ String.length(text) < max_length ->
+ text
+
+ true ->
+ length_with_omission = max_length - String.length(omission)
+
+ "#{String.slice(text, 0, length_with_omission)}#{omission}"
+ end