From 23bb7d68f04ed41ea155ed83e74ba5728bf7c239 Mon Sep 17 00:00:00 2001
From: Egor <egor@kislitsyn.com>
Date: Wed, 20 Feb 2019 10:16:51 +0000
Subject: [PATCH] fix carriage return

---
 lib/auto_linker/parser.ex | 52 +++++++++++++++++----------------------
 test/parser_test.exs      |  9 +++++++
 2 files changed, 31 insertions(+), 30 deletions(-)

diff --git a/lib/auto_linker/parser.ex b/lib/auto_linker/parser.ex
index 0448cdd..c675bb1 100644
--- a/lib/auto_linker/parser.ex
+++ b/lib/auto_linker/parser.ex
@@ -205,23 +205,20 @@ defmodule AutoLinker.Parser do
         handler
       )
 
-  defp do_parse({" " <> text, user_acc}, opts, {buffer, acc, {:open, level}}, handler),
-    do:
-      do_parse(
-        {text, user_acc},
-        opts,
-        {"", acc <> buffer <> " ", {:attrs, level}},
-        handler
-      )
-
-  defp do_parse({"\n" <> text, user_acc}, opts, {buffer, acc, {:open, level}}, handler),
-    do:
-      do_parse(
-        {text, user_acc},
-        opts,
-        {"", acc <> buffer <> "\n", {:attrs, level}},
-        handler
-      )
+  defp do_parse(
+         {<<char::bytes-size(1), text::binary>>, user_acc},
+         opts,
+         {buffer, acc, {:open, level}},
+         handler
+       )
+       when char in [" ", "\r", "\n"] do
+    do_parse(
+      {text, user_acc},
+      opts,
+      {"", acc <> buffer <> char, {:attrs, level}},
+      handler
+    )
+  end
 
   # default cases where state is not important
   defp do_parse(
@@ -232,24 +229,19 @@ defmodule AutoLinker.Parser do
        ),
        do: do_parse({text, user_acc}, opts, {buffer <> " ", acc, state}, handler)
 
-  defp do_parse({" " <> text, user_acc}, opts, {buffer, acc, state}, handler) do
+  defp do_parse(
+         {<<char::bytes-size(1), text::binary>>, user_acc},
+         opts,
+         {buffer, acc, state},
+         handler
+       )
+       when char in [" ", "\r", "\n"] do
     {buffer, user_acc} = run_handler(handler, buffer, opts, user_acc)
 
     do_parse(
       {text, user_acc},
       opts,
-      {"", acc <> buffer <> " ", state},
-      handler
-    )
-  end
-
-  defp do_parse({"\n" <> text, user_acc}, opts, {buffer, acc, state}, handler) do
-    {buffer, user_acc} = run_handler(handler, buffer, opts, user_acc)
-
-    do_parse(
-      {text, user_acc},
-      opts,
-      {"", acc <> buffer <> "\n", state},
+      {"", acc <> buffer <> char, state},
       handler
     )
   end
diff --git a/test/parser_test.exs b/test/parser_test.exs
index 998b8f4..66bfb97 100644
--- a/test/parser_test.exs
+++ b/test/parser_test.exs
@@ -51,6 +51,15 @@ defmodule AutoLinker.ParserTest do
   end
 
   describe "parse" do
+    test "handle line breakes" do
+      text = "google.com\r\nssss"
+
+      expected =
+        "<a href=\"http://google.com\" class=\"auto-linker\" target=\"_blank\" rel=\"noopener noreferrer\">google.com</a>\r\nssss"
+
+      assert parse(text) == expected
+    end
+
     test "does not link attributes" do
       text = "Check out <a href='google.com'>google</a>"
       assert parse(text) == text