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add optional rel attribute handler

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This commit is contained in:
Egor Kislitsyn 2019-02-22 17:41:23 +07:00
parent 3ceaf266da
commit d6a0318275
2 changed files with 53 additions and 20 deletions
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41
lib/auto_linker/builder.ex
View file

@ -7,11 +7,13 @@ defmodule AutoLinker.Builder do
Create a link.
"""
def create_link(url, opts) do
url = add_scheme(url)
[]
|> build_attrs(url, opts, :rel)
|> build_attrs(url, opts, :target)
|> build_attrs(url, opts, :class)
|> build_attrs(url, opts, :scheme)
|> build_attrs(url, opts, :href)
|> format_url(url, opts)
end
@ -23,6 +25,13 @@ defmodule AutoLinker.Builder do
|> format_markdown(text, opts)
end
defp build_attrs(attrs, uri, %{rel: get_rel}, :rel) when is_function(get_rel, 1) do
case get_rel.(uri) do
nil -> attrs
rel -> [{:rel, rel} | attrs]
end
end
defp build_attrs(attrs, _, opts, :rel) do
if rel = Map.get(opts, :rel, "noopener noreferrer"), do: [{:rel, rel} | attrs], else: attrs
end
@ -35,12 +44,14 @@ defmodule AutoLinker.Builder do
if cls = Map.get(opts, :class, "auto-linker"), do: [{:class, cls} | attrs], else: attrs
end
defp build_attrs(attrs, url, _opts, :scheme) do
if String.starts_with?(url, ["http://", "https://"]),
do: [{:href, url} | attrs],
else: [{:href, "http://" <> url} | attrs]
defp build_attrs(attrs, url, _opts, :href) do
[{:href, url} | attrs]
end
defp add_scheme("http://" <> _ = url), do: url
defp add_scheme("https://" <> _ = url), do: url
defp add_scheme(url), do: "http://" <> url
defp format_url(attrs, url, opts) do
url =
url
@ -117,10 +128,11 @@ defmodule AutoLinker.Builder do
url = mention_prefix <> name
[href: url]
[]
|> build_attrs(url, opts, :rel)
|> build_attrs(url, opts, :target)
|> build_attrs(url, opts, :class)
|> build_attrs(url, opts, :href)
|> format_mention(name, opts)
end
@ -129,43 +141,48 @@ defmodule AutoLinker.Builder do
url = hashtag_prefix <> tag
[href: url]
[]
|> build_attrs(url, opts, :rel)
|> build_attrs(url, opts, :target)
|> build_attrs(url, opts, :class)
|> build_attrs(url, opts, :href)
|> format_hashtag(tag, opts)
end
def create_email_link(email, opts) do
[]
|> build_attrs(email, opts, :class)
|> build_attrs("mailto:#{email}", opts, :href)
|> format_email(email, opts)
end
def create_extra_link(uri, opts) do
[]
|> build_attrs(uri, opts, :class)
|> build_attrs(uri, opts, :rel)
|> build_attrs(uri, opts, :target)
|> build_attrs(uri, opts, :href)
|> format_extra(uri, opts)
end
def format_mention(attrs, name, _opts) do
attrs = format_attrs(attrs)
"<a #{attrs}>@" <> name <> "</a>"
"<a #{attrs}>@#{name}</a>"
end
def format_hashtag(attrs, tag, _opts) do
attrs = format_attrs(attrs)
"<a #{attrs}>#" <> tag <> "</a>"
"<a #{attrs}>##{tag}</a>"
end
def format_email(attrs, email, _opts) do
attrs = format_attrs(attrs)
~s(<a href="mailto:#{email}" #{attrs}>#{email}</a>)
~s(<a #{attrs}>#{email}</a>)
end
def format_extra(attrs, uri, _opts) do
attrs = format_attributes(attrs)
~s(<a href="#{uri}"#{attrs}>#{uri}</a>)
attrs = format_attrs(attrs)
~s(<a #{attrs}>#{uri}</a>)
end
defp format_attributes(attrs) do

32
test/auto_linker_test.exs
View file

@ -33,7 +33,7 @@ defmodule AutoLinkerTest do
"hello google.com https://ddg.com 888 888-8888 user@email.com [google.com](http://google.com) irc:///mIRC"
expected =
"hello <a href=\"http://google.com\">google.com</a> <a href=\"https://ddg.com\">ddg.com</a> <a href=\"#\" class=\"phone-number\" data-phone=\"8888888888\">888 888-8888</a> <a href=\"mailto:user@email.com\" >user@email.com</a> <a href='http://google.com'>google.com</a> <a href=\"irc:///mIRC\">irc:///mIRC</a>"
"hello <a href=\"http://google.com\">google.com</a> <a href=\"https://ddg.com\">ddg.com</a> <a href=\"#\" class=\"phone-number\" data-phone=\"8888888888\">888 888-8888</a> <a href=\"mailto:user@email.com\">user@email.com</a> <a href='http://google.com'>google.com</a> <a href=\"irc:///mIRC\">irc:///mIRC</a>"
assert AutoLinker.link(text,
phone: true,
@ -47,6 +47,22 @@ defmodule AutoLinkerTest do
) == expected
end
test "rel as function" do
text = "google.com"
expected = "<a href=\"http://google.com\" rel=\"com\">google.com</a>"
custom_rel = fn url ->
url |> String.split(".") |> List.last()
end
assert AutoLinker.link(text,
class: false,
new_window: false,
rel: custom_rel
) == expected
end
describe "custom handlers" do
test "mentions handler" do
text = "hello @user, @valid_user and @invalid_user"
@ -106,7 +122,7 @@ defmodule AutoLinkerTest do
end
expected =
"Hello again, <span class='h-card'><a href='#/user/user'>@<span>@user</span></a></span>.&lt;script&gt;&lt;/script&gt;\nThis is on another :moominmamma: line. <a class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"/tag/2hu\">#2hu</a> <a class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"/tag/epic\">#epic</a> <a class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"/tag/phantasmagoric\">#phantasmagoric</a>"
"Hello again, <span class='h-card'><a href='#/user/user'>@<span>@user</span></a></span>.&lt;script&gt;&lt;/script&gt;\nThis is on another :moominmamma: line. <a href=\"/tag/2hu\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">#2hu</a> <a href=\"/tag/epic\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">#epic</a> <a href=\"/tag/phantasmagoric\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">#phantasmagoric</a>"
assert AutoLinker.link(text,
mention: true,
@ -120,7 +136,7 @@ defmodule AutoLinkerTest do
describe "mentions" do
test "simple mentions" do
expected =
~s{hello <a class="auto-linker" target="_blank" rel="noopener noreferrer" href="https://example.com/user/user">@user</a> and <a class="auto-linker" target="_blank" rel="noopener noreferrer" href="https://example.com/user/anotherUser">@anotherUser</a>.}
~s{hello <a href="https://example.com/user/user" class="auto-linker" target="_blank" rel="noopener noreferrer">@user</a> and <a href="https://example.com/user/anotherUser" class="auto-linker" target="_blank" rel="noopener noreferrer">@anotherUser</a>.}
assert AutoLinker.link("hello @user and @anotherUser.",
mention: true,
@ -132,7 +148,7 @@ defmodule AutoLinkerTest do
text = "hey @user@example.com"
expected =
"hey <a class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https://example.com/user/user@example.com\">@user@example.com</a>"
"hey <a href=\"https://example.com/user/user@example.com\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">@user@example.com</a>"
assert AutoLinker.link(text,
mention: true,
@ -144,7 +160,7 @@ defmodule AutoLinkerTest do
describe "hashtag links" do
test "hashtag" do
expected =
" one <a class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https://example.com/tag/2two\">#2two</a> three <a class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https://example.com/tag/four\">#four</a>."
" one <a href=\"https://example.com/tag/2two\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">#2two</a> three <a href=\"https://example.com/tag/four\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">#four</a>."
assert AutoLinker.link(" one #2two three #four.",
hashtag: true,
@ -289,7 +305,7 @@ defmodule AutoLinkerTest do
expected =
"<a href=\"xmpp:user@example.com\" class=\"auto-linker\">xmpp:user@example.com</a>"
assert AutoLinker.link(text, extra: true) == expected
assert AutoLinker.link(text, extra: true, new_window: false, rel: false) == expected
end
test "email" do
@ -305,7 +321,7 @@ defmodule AutoLinkerTest do
expected =
"<a href=\"magnet:?xt=urn:btih:a4104a9d2f5615601c429fe8bab8177c47c05c84&dn=ubuntu-18.04.1.0-live-server-amd64.iso&tr=http%3A%2F%2Ftorrent.ubuntu.com%3A6969%2Fannounce&tr=http%3A%2F%2Fipv6.torrent.ubuntu.com%3A6969%2Fannounce\" class=\"auto-linker\">magnet:?xt=urn:btih:a4104a9d2f5615601c429fe8bab8177c47c05c84&dn=ubuntu-18.04.1.0-live-server-amd64.iso&tr=http%3A%2F%2Ftorrent.ubuntu.com%3A6969%2Fannounce&tr=http%3A%2F%2Fipv6.torrent.ubuntu.com%3A6969%2Fannounce</a>"
assert AutoLinker.link(text, extra: true) == expected
assert AutoLinker.link(text, extra: true, new_window: false, rel: false) == expected
end
test "dweb" do
@ -315,7 +331,7 @@ defmodule AutoLinkerTest do
expected =
"<a href=\"dweb://584faa05d394190ab1a3f0240607f9bf2b7e2bd9968830a11cf77db0cea36a21+v1.0.0/path/to/file.txt\" class=\"auto-linker\">dweb://584faa05d394190ab1a3f0240607f9bf2b7e2bd9968830a11cf77db0cea36a21+v1.0.0/path/to/file.txt</a>"
assert AutoLinker.link(text, extra: true) == expected
assert AutoLinker.link(text, extra: true, new_window: false, rel: false) == expected
end
end