defmodule Pleroma.Formatter do alias Pleroma.User alias Pleroma.Web.MediaProxy @tag_regex ~r/\#\w+/u def parse_tags(text, data \\ %{}) do Regex.scan(@tag_regex, text) |> Enum.map(fn ["#" <> tag = full_tag] -> {full_tag, String.downcase(tag)} end) |> (fn map -> if data["sensitive"] in [true, "True", "true", "1"], do: [{"#nsfw", "nsfw"}] ++ map, else: map end).() end def parse_mentions(text) do # Modified from https://www.w3.org/TR/html5/forms.html#valid-e-mail-address regex = ~r/@[a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@?[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*/u Regex.scan(regex, text) |> List.flatten() |> Enum.uniq() |> Enum.map(fn "@" <> match = full_match -> {full_match, User.get_cached_by_nickname(match)} end) |> Enum.filter(fn {_match, user} -> user end) end @finmoji [ "a_trusted_friend", "alandislands", "association", "auroraborealis", "baby_in_a_box", "bear", "black_gold", "christmasparty", "crosscountryskiing", "cupofcoffee", "education", "fashionista_finns", "finnishlove", "flag", "forest", "four_seasons_of_bbq", "girlpower", "handshake", "happiness", "headbanger", "icebreaker", "iceman", "joulutorttu", "kaamos", "kalsarikannit_f", "kalsarikannit_m", "karjalanpiirakka", "kicksled", "kokko", "lavatanssit", "losthopes_f", "losthopes_m", "mattinykanen", "meanwhileinfinland", "moominmamma", "nordicfamily", "out_of_office", "peacemaker", "perkele", "pesapallo", "polarbear", "pusa_hispida_saimensis", "reindeer", "sami", "sauna_f", "sauna_m", "sauna_whisk", "sisu", "stuck", "suomimainittu", "superfood", "swan", "the_cap", "the_conductor", "the_king", "the_voice", "theoriginalsanta", "tomoffinland", "torillatavataan", "unbreakable", "waiting", "white_nights", "woollysocks" ] @finmoji_with_filenames Enum.map(@finmoji, fn finmoji -> {finmoji, "/finmoji/128px/#{finmoji}-128.png"} end) @emoji_from_file (with {:ok, default} <- File.read("config/emoji.txt") do custom = with {:ok, custom} <- File.read("config/custom_emoji.txt") do custom else _e -> "" end (default <> "\n" <> custom) |> String.trim() |> String.split(~r/\n+/) |> Enum.map(fn line -> [name, file] = String.split(line, ~r/,\s*/) {name, file} end) else _ -> [] end) @emoji @finmoji_with_filenames ++ @emoji_from_file def emojify(text, emoji \\ @emoji) def emojify(text, nil), do: text def emojify(text, emoji) do Enum.reduce(emoji, text, fn {emoji, file}, text -> emoji = HtmlSanitizeEx.strip_tags(emoji) file = HtmlSanitizeEx.strip_tags(file) String.replace( text, ":#{emoji}:", "<img height='32px' width='32px' alt='#{emoji}' title='#{emoji}' src='#{ MediaProxy.url(file) }' />" ) end) end def get_emoji(text) do Enum.filter(@emoji, fn {emoji, _} -> String.contains?(text, ":#{emoji}:") end) end def get_custom_emoji() do @emoji end @link_regex ~r/https?:\/\/[\w\.\/?=\-#\+%&@~'\(\):]+[\w\/]/u def html_escape(text) 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 "changes http:... links to html links" def add_links({subs, text}) do links = Regex.scan(@link_regex, text) |> 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} -> {:safe, link} = Phoenix.HTML.Link.link(url, to: url) link = link |> IO.iodata_to_binary() {uuid, link} 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{ap_id: ap_id, info: info}, uuid} -> ap_id = info["source_data"]["url"] || ap_id short_match = String.split(match, "@") |> tl() |> hd() {uuid, "<span><a 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, uuid} -> url = "<a href='#{Pleroma.Web.base_url()}/tag/#{tag}' rel='tag'>##{tag}</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 end