git.squeep.com Git - akkoma/blob - lib/pleroma/formatter.ex

   1 defmodule Pleroma.Formatter do
   2   alias Pleroma.User
   3   alias Pleroma.Web.MediaProxy
   4
   5   @tag_regex ~r/\#\w+/u
   6   def parse_tags(text, data \\ %{}) do
   7     Regex.scan(@tag_regex, text)
   8     |> Enum.map(fn ["#" <> tag = full_tag] -> {full_tag, String.downcase(tag)} end)
   9     |> (fn map ->
  10           if data["sensitive"] in [true, "True", "true", "1"],
  11             do: [{"#nsfw", "nsfw"}] ++ map,
  12             else: map
  13         end).()
  14   end
  15
  16   def parse_mentions(text) do
  17     # Modified from https://www.w3.org/TR/html5/forms.html#valid-e-mail-address
  18     regex =
  19       ~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
  20
  21     Regex.scan(regex, text)
  22     |> List.flatten()
  23     |> Enum.uniq()
  24     |> Enum.map(fn "@" <> match = full_match ->
  25       {full_match, User.get_cached_by_nickname(match)}
  26     end)
  27     |> Enum.filter(fn {_match, user} -> user end)
  28   end
  29
  30   @finmoji [
  31     "a_trusted_friend",
  32     "alandislands",
  33     "association",
  34     "auroraborealis",
  35     "baby_in_a_box",
  36     "bear",
  37     "black_gold",
  38     "christmasparty",
  39     "crosscountryskiing",
  40     "cupofcoffee",
  41     "education",
  42     "fashionista_finns",
  43     "finnishlove",
  44     "flag",
  45     "forest",
  46     "four_seasons_of_bbq",
  47     "girlpower",
  48     "handshake",
  49     "happiness",
  50     "headbanger",
  51     "icebreaker",
  52     "iceman",
  53     "joulutorttu",
  54     "kaamos",
  55     "kalsarikannit_f",
  56     "kalsarikannit_m",
  57     "karjalanpiirakka",
  58     "kicksled",
  59     "kokko",
  60     "lavatanssit",
  61     "losthopes_f",
  62     "losthopes_m",
  63     "mattinykanen",
  64     "meanwhileinfinland",
  65     "moominmamma",
  66     "nordicfamily",
  67     "out_of_office",
  68     "peacemaker",
  69     "perkele",
  70     "pesapallo",
  71     "polarbear",
  72     "pusa_hispida_saimensis",
  73     "reindeer",
  74     "sami",
  75     "sauna_f",
  76     "sauna_m",
  77     "sauna_whisk",
  78     "sisu",
  79     "stuck",
  80     "suomimainittu",
  81     "superfood",
  82     "swan",
  83     "the_cap",
  84     "the_conductor",
  85     "the_king",
  86     "the_voice",
  87     "theoriginalsanta",
  88     "tomoffinland",
  89     "torillatavataan",
  90     "unbreakable",
  91     "waiting",
  92     "white_nights",
  93     "woollysocks"
  94   ]
  95
  96   @finmoji_with_filenames Enum.map(@finmoji, fn finmoji ->
  97                             {finmoji, "/finmoji/128px/#{finmoji}-128.png"}
  98                           end)
  99
 100   @emoji_from_file (with {:ok, default} <- File.read("config/emoji.txt") do
 101                       custom =
 102                         with {:ok, custom} <- File.read("config/custom_emoji.txt") do
 103                           custom
 104                         else
 105                           _e -> ""
 106                         end
 107
 108                       (default <> "\n" <> custom)
 109                       |> String.trim()
 110                       |> String.split(~r/\n+/)
 111                       |> Enum.map(fn line ->
 112                         [name, file] = String.split(line, ~r/,\s*/)
 113                         {name, file}
 114                       end)
 115                     else
 116                       _ -> []
 117                     end)
 118
 119   @emoji @finmoji_with_filenames ++ @emoji_from_file
 120
 121   def emojify(text, emoji \\ @emoji)
 122   def emojify(text, nil), do: text
 123
 124   def emojify(text, emoji) do
 125     Enum.reduce(emoji, text, fn {emoji, file}, text ->
 126       emoji = HtmlSanitizeEx.strip_tags(emoji)
 127       file = HtmlSanitizeEx.strip_tags(file)
 128
 129       String.replace(
 130         text,
 131         ":#{emoji}:",
 132         "<img height='32px' width='32px' alt='#{emoji}' title='#{emoji}' src='#{
 133           MediaProxy.url(file)
 134         }' />"
 135       )
 136     end)
 137   end
 138
 139   def get_emoji(text) do
 140     Enum.filter(@emoji, fn {emoji, _} -> String.contains?(text, ":#{emoji}:") end)
 141   end
 142
 143   def get_custom_emoji() do
 144     @emoji
 145   end
 146
 147   @link_regex ~r/https?:\/\/[\w\.\/?=\-#\+%&@~\(\):]+[\w\/]/u
 148
 149   def html_escape(text) do
 150     Regex.split(@link_regex, text, include_captures: true)
 151     |> Enum.map_every(2, fn chunk ->
 152       {:safe, part} = Phoenix.HTML.html_escape(chunk)
 153       part
 154     end)
 155     |> Enum.join("")
 156   end
 157
 158   @doc "changes http:... links to html links"
 159   def add_links({subs, text}) do
 160     links =
 161       Regex.scan(@link_regex, text)
 162       |> Enum.map(fn [url] -> {Ecto.UUID.generate(), url} end)
 163
 164     uuid_text =
 165       links
 166       |> Enum.reduce(text, fn {uuid, url}, acc -> String.replace(acc, url, uuid) end)
 167
 168     subs =
 169       subs ++
 170         Enum.map(links, fn {uuid, url} ->
 171           {uuid, "<a href='#{url}'>#{url}</a>"}
 172         end)
 173
 174     {subs, uuid_text}
 175   end
 176
 177   @doc "Adds the links to mentioned users"
 178   def add_user_links({subs, text}, mentions) do
 179     mentions =
 180       mentions
 181       |> Enum.sort_by(fn {name, _} -> -String.length(name) end)
 182       |> Enum.map(fn {name, user} -> {name, user, Ecto.UUID.generate()} end)
 183
 184     uuid_text =
 185       mentions
 186       |> Enum.reduce(text, fn {match, _user, uuid}, text ->
 187         String.replace(text, match, uuid)
 188       end)
 189
 190     subs =
 191       subs ++
 192         Enum.map(mentions, fn {match, %User{ap_id: ap_id, info: info}, uuid} ->
 193           ap_id = info["source_data"]["url"] || ap_id
 194
 195           short_match = String.split(match, "@") |> tl() |> hd()
 196           {uuid, "<span><a href='#{ap_id}'>@<span>#{short_match}</span></a></span>"}
 197         end)
 198
 199     {subs, uuid_text}
 200   end
 201
 202   @doc "Adds the hashtag links"
 203   def add_hashtag_links({subs, text}, tags) do
 204     tags =
 205       tags
 206       |> Enum.sort_by(fn {name, _} -> -String.length(name) end)
 207       |> Enum.map(fn {name, short} -> {name, short, Ecto.UUID.generate()} end)
 208
 209     uuid_text =
 210       tags
 211       |> Enum.reduce(text, fn {match, _short, uuid}, text ->
 212         String.replace(text, match, uuid)
 213       end)
 214
 215     subs =
 216       subs ++
 217         Enum.map(tags, fn {_, tag, uuid} ->
 218           url = "<a href='#{Pleroma.Web.base_url()}/tag/#{tag}' rel='tag'>##{tag}</a>"
 219           {uuid, url}
 220         end)
 221
 222     {subs, uuid_text}
 223   end
 224
 225   def finalize({subs, text}) do
 226     Enum.reduce(subs, text, fn {uuid, replacement}, result_text ->
 227       String.replace(result_text, uuid, replacement)
 228     end)
 229   end
 230 end