From a6e87558631ffdc6955cf7dbc47b319fdfd8c976 Mon Sep 17 00:00:00 2001
From: Egor Kislitsyn <egor@kislitsyn.com>
Date: Tue, 9 Apr 2019 13:45:55 +0700
Subject: [PATCH] do not link inside `<pre>` and `<code>`

---
 lib/auto_linker/parser.ex | 12 ++++++++++++
 test/parser_test.exs      | 11 +++++++++++
 2 files changed, 23 insertions(+)

diff --git a/lib/auto_linker/parser.ex b/lib/auto_linker/parser.ex
index 9e4941f..d16ea9f 100644
--- a/lib/auto_linker/parser.ex
+++ b/lib/auto_linker/parser.ex
@@ -162,9 +162,21 @@ defmodule AutoLinker.Parser do
   defp do_parse({"<a" <> text, user_acc}, opts, {buffer, acc, :parsing}, handler),
     do: do_parse({text, user_acc}, opts, {"", acc <> buffer <> "<a", :skip}, handler)
 
+  defp do_parse({"<pre" <> text, user_acc}, opts, {buffer, acc, :parsing}, handler),
+    do: do_parse({text, user_acc}, opts, {"", acc <> buffer <> "<pre", :skip}, handler)
+
+  defp do_parse({"<code" <> text, user_acc}, opts, {buffer, acc, :parsing}, handler),
+    do: do_parse({text, user_acc}, opts, {"", acc <> buffer <> "<code", :skip}, handler)
+
   defp do_parse({"</a>" <> text, user_acc}, opts, {buffer, acc, :skip}, handler),
     do: do_parse({text, user_acc}, opts, {"", acc <> buffer <> "</a>", :parsing}, handler)
 
+  defp do_parse({"</pre>" <> text, user_acc}, opts, {buffer, acc, :skip}, handler),
+    do: do_parse({text, user_acc}, opts, {"", acc <> buffer <> "</pre>", :parsing}, handler)
+
+  defp do_parse({"</code>" <> text, user_acc}, opts, {buffer, acc, :skip}, handler),
+    do: do_parse({text, user_acc}, opts, {"", acc <> buffer <> "</code>", :parsing}, handler)
+
   defp do_parse({"<" <> text, user_acc}, opts, {"", acc, :parsing}, handler),
     do: do_parse({text, user_acc}, opts, {"<", acc, {:open, 1}}, handler)
 
diff --git a/test/parser_test.exs b/test/parser_test.exs
index 4e23ff0..2bcf788 100644
--- a/test/parser_test.exs
+++ b/test/parser_test.exs
@@ -69,6 +69,17 @@ defmodule AutoLinker.ParserTest do
       assert parse(text) == text
     end
 
+    test "does not link inside `<pre>` and `<code>`" do
+      text = "<pre>google.com</pre>"
+      assert parse(text) == text
+
+      text = "<code>google.com</code>"
+      assert parse(text) == text
+
+      text = "<pre><code>google.com</code></pre>"
+      assert parse(text) == text
+    end
+
     test "links url inside html" do
       text = "<div>google.com</div>"