+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
defmodule Pleroma.Formatter do
+ alias Pleroma.HTML
alias Pleroma.User
- alias Pleroma.Web.MediaProxy
- @link_regex ~r/https?:\/\/[\w\.\/?=\-#%&@~\(\)]+[\w\/]/u
- def linkify(text) do
- Regex.replace(@link_regex, text, "<a href='\\0'>\\0</a>")
+ @safe_mention_regex ~r/^(\s*(?<mentions>(@.+?\s+){1,})+)(?<rest>.*)/s
+ @link_regex ~r"((?:http(s)?:\/\/)?[\w.-]+(?:\.[\w\.-]+)+[\w\-\._~%:/?#[\]@!\$&'\(\)\*\+,;=.]+)|[0-9a-z+\-\.]+:[0-9a-z$-_.+!*'(),]+"ui
+ @markdown_characters_regex ~r/(`|\*|_|{|}|[|]|\(|\)|#|\+|-|\.|!)/
+
+ @auto_linker_config hashtag: true,
+ hashtag_handler: &Pleroma.Formatter.hashtag_handler/4,
+ mention: true,
+ mention_handler: &Pleroma.Formatter.mention_handler/4,
+ scheme: true
+
+ def escape_mention_handler("@" <> nickname = mention, buffer, _, _) do
+ case User.get_cached_by_nickname(nickname) do
+ %User{} ->
+ # escape markdown characters with `\\`
+ # (we don't want something like @user__name to be parsed by markdown)
+ String.replace(mention, @markdown_characters_regex, "\\\\\\1")
+
+ _ ->
+ buffer
+ end
+ end
+
+ def mention_handler("@" <> nickname, buffer, opts, acc) do
+ case User.get_cached_by_nickname(nickname) do
+ %User{id: id} = user ->
+ ap_id = get_ap_id(user)
+ nickname_text = get_nickname_text(nickname, opts)
+
+ link =
+ ~s(<span class="h-card"><a data-user="#{id}" class="u-url mention" href="#{ap_id}" rel="ugc">@<span>#{
+ nickname_text
+ }</span></a></span>)
+
+ {link, %{acc | mentions: MapSet.put(acc.mentions, {"@" <> nickname, user})}}
+
+ _ ->
+ {buffer, acc}
+ end
+ end
+
+ def hashtag_handler("#" <> tag = tag_text, _buffer, _opts, acc) do
+ tag = String.downcase(tag)
+ url = "#{Pleroma.Web.base_url()}/tag/#{tag}"
+ link = ~s(<a class="hashtag" data-tag="#{tag}" href="#{url}" rel="tag ugc">#{tag_text}</a>)
+
+ {link, %{acc | tags: MapSet.put(acc.tags, {tag_text, tag})}}
+ end
+
+ @doc """
+ Parses a text and replace plain text links with HTML. Returns a tuple with a result text, mentions, and hashtags.
+
+ If the 'safe_mention' option is given, only consecutive mentions at the start the post are actually mentioned.
+ """
+ @spec linkify(String.t(), keyword()) ::
+ {String.t(), [{String.t(), User.t()}], [{String.t(), String.t()}]}
+ def linkify(text, options \\ []) do
+ options = options ++ @auto_linker_config
+
+ if options[:safe_mention] && Regex.named_captures(@safe_mention_regex, text) do
+ %{"mentions" => mentions, "rest" => rest} = Regex.named_captures(@safe_mention_regex, text)
+ acc = %{mentions: MapSet.new(), tags: MapSet.new()}
+
+ {text_mentions, %{mentions: mentions}} = AutoLinker.link_map(mentions, acc, options)
+ {text_rest, %{tags: tags}} = AutoLinker.link_map(rest, acc, options)
+
+ {text_mentions <> text_rest, MapSet.to_list(mentions), MapSet.to_list(tags)}
+ else
+ acc = %{mentions: MapSet.new(), tags: MapSet.new()}
+ {text, %{mentions: mentions, tags: tags}} = AutoLinker.link_map(text, acc, options)
+
+ {text, MapSet.to_list(mentions), MapSet.to_list(tags)}
+ end
end
- @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).()
+ @doc """
+ Escapes a special characters in mention names.
+ """
+ def mentions_escape(text, options \\ []) do
+ options =
+ Keyword.merge(options,
+ mention: true,
+ url: false,
+ mention_handler: &Pleroma.Formatter.escape_mention_handler/4
+ )
+
+ if options[:safe_mention] && Regex.named_captures(@safe_mention_regex, text) do
+ %{"mentions" => mentions, "rest" => rest} = Regex.named_captures(@safe_mention_regex, text)
+ AutoLinker.link(mentions, options) <> AutoLinker.link(rest, options)
+ else
+ AutoLinker.link(text, options)
+ 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
+ def html_escape({text, mentions, hashtags}, type) do
+ {html_escape(text, type), mentions, hashtags}
+ end
- 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)
+ def html_escape(text, "text/html") do
+ HTML.filter_tags(text)
end
- def html_escape(text) do
+ 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)
|> Enum.join("")
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, file} <- File.read("config/emoji.txt") do
- file
- |> String.trim
- |> String.split("\n")
- |> Enum.map(fn(line) ->
- [name, file] = String.split(line, ", ")
- {name, file}
- end)
- else
- _ -> []
- end)
-
- @emoji @finmoji_with_filenames ++ @emoji_from_file
-
- def emojify(text, additional \\ nil) do
- all_emoji = if additional do
- Map.to_list(additional) ++ @emoji
+ def truncate(text, max_length \\ 200, omission \\ "...") do
+ # Remove trailing whitespace
+ text = Regex.replace(~r/([^ \t\r\n])([ \t]+$)/u, text, "\\g{1}")
+
+ if String.length(text) < max_length do
+ text
else
- @emoji
+ length_with_omission = max_length - String.length(omission)
+ String.slice(text, 0, length_with_omission) <> omission
end
-
- Enum.reduce(all_emoji, text, fn ({emoji, file}, text) ->
- 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
+ defp get_ap_id(%User{source_data: %{"url" => url}}) when is_binary(url), do: url
+ defp get_ap_id(%User{ap_id: ap_id}), do: ap_id
- def get_custom_emoji() do
- @emoji
- end
+ defp get_nickname_text(nickname, %{mentions_format: :full}), do: User.full_nickname(nickname)
+ defp get_nickname_text(nickname, _), do: User.local_nickname(nickname)
end
projects / akkoma / blobdiff