forked from AkkomaGang/akkoma
166 lines
4.6 KiB
Elixir
166 lines
4.6 KiB
Elixir
defmodule Pleroma.Formatter do
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alias Pleroma.User
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alias Pleroma.Web.MediaProxy
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alias Pleroma.HTML
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alias Pleroma.Emoji
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@tag_regex ~r/\#\w+/u
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def parse_tags(text, data \\ %{}) do
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Regex.scan(@tag_regex, text)
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|> Enum.map(fn ["#" <> tag = full_tag] -> {full_tag, String.downcase(tag)} end)
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|> (fn map ->
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if data["sensitive"] in [true, "True", "true", "1"],
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do: [{"#nsfw", "nsfw"}] ++ map,
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else: map
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end).()
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end
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def parse_mentions(text) do
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# Modified from https://www.w3.org/TR/html5/forms.html#valid-e-mail-address
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regex =
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~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
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Regex.scan(regex, text)
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|> List.flatten()
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|> Enum.uniq()
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|> Enum.map(fn "@" <> match = full_match ->
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{full_match, User.get_cached_by_nickname(match)}
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end)
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|> Enum.filter(fn {_match, user} -> user end)
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end
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def emojify(text) do
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emojify(text, Emoji.get_all())
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end
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def emojify(text, nil), do: text
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def emojify(text, emoji) do
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Enum.reduce(emoji, text, fn {emoji, file}, text ->
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emoji = HTML.strip_tags(emoji)
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file = HTML.strip_tags(file)
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String.replace(
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text,
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":#{emoji}:",
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"<img height='32px' width='32px' alt='#{emoji}' title='#{emoji}' src='#{
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MediaProxy.url(file)
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}' />"
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)
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|> HTML.filter_tags()
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end)
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end
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def get_emoji(text) when is_binary(text) do
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Enum.filter(Emoji.get_all(), fn {emoji, _} -> String.contains?(text, ":#{emoji}:") end)
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end
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def get_emoji(_), do: []
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@link_regex ~r/[0-9a-z+\-\.]+:[0-9a-z$-_.+!*'(),]+/ui
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@uri_schemes Application.get_env(:pleroma, :uri_schemes, [])
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@valid_schemes Keyword.get(@uri_schemes, :valid_schemes, [])
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# TODO: make it use something other than @link_regex
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def html_escape(text, "text/html") do
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HTML.filter_tags(text)
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end
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def html_escape(text, "text/plain") do
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Regex.split(@link_regex, text, include_captures: true)
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|> Enum.map_every(2, fn chunk ->
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{:safe, part} = Phoenix.HTML.html_escape(chunk)
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part
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end)
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|> Enum.join("")
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end
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@doc "changes scheme:... urls to html links"
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def add_links({subs, text}) do
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links =
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text
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|> String.split([" ", "\t", "<br>"])
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|> Enum.filter(fn word -> String.starts_with?(word, @valid_schemes) end)
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|> Enum.filter(fn word -> Regex.match?(@link_regex, word) end)
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|> Enum.map(fn url -> {Ecto.UUID.generate(), url} end)
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|> Enum.sort_by(fn {_, url} -> -String.length(url) end)
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uuid_text =
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links
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|> Enum.reduce(text, fn {uuid, url}, acc -> String.replace(acc, url, uuid) end)
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subs =
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subs ++
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Enum.map(links, fn {uuid, url} ->
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{uuid, "<a href=\"#{url}\">#{url}</a>"}
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end)
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{subs, uuid_text}
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end
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@doc "Adds the links to mentioned users"
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def add_user_links({subs, text}, mentions) do
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mentions =
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mentions
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|> Enum.sort_by(fn {name, _} -> -String.length(name) end)
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|> Enum.map(fn {name, user} -> {name, user, Ecto.UUID.generate()} end)
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uuid_text =
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mentions
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|> Enum.reduce(text, fn {match, _user, uuid}, text ->
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String.replace(text, match, uuid)
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end)
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subs =
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subs ++
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Enum.map(mentions, fn {match, %User{id: id, ap_id: ap_id, info: info}, uuid} ->
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ap_id =
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if is_binary(info.source_data["url"]) do
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info.source_data["url"]
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else
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ap_id
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end
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short_match = String.split(match, "@") |> tl() |> hd()
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{uuid,
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"<span><a data-user='#{id}' class='mention' href='#{ap_id}'>@<span>#{short_match}</span></a></span>"}
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end)
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{subs, uuid_text}
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end
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@doc "Adds the hashtag links"
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def add_hashtag_links({subs, text}, tags) do
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tags =
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tags
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|> Enum.sort_by(fn {name, _} -> -String.length(name) end)
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|> Enum.map(fn {name, short} -> {name, short, Ecto.UUID.generate()} end)
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uuid_text =
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tags
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|> Enum.reduce(text, fn {match, _short, uuid}, text ->
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String.replace(text, match, uuid)
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end)
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subs =
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subs ++
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Enum.map(tags, fn {tag_text, tag, uuid} ->
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url =
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"<a data-tag='#{tag}' href='#{Pleroma.Web.base_url()}/tag/#{tag}' rel='tag'>#{
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tag_text
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}</a>"
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{uuid, url}
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end)
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{subs, uuid_text}
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end
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def finalize({subs, text}) do
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Enum.reduce(subs, text, fn {uuid, replacement}, result_text ->
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String.replace(result_text, uuid, replacement)
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end)
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end
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end
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