1 files changed, 46 insertions, 0 deletions
diff --git a/third_party/python/yamllint/yamllint/rules/new_lines.py b/third_party/python/yamllint/yamllint/rules/new_lines.py
new file mode 100644
index 0000000000..686bac244b
--- /dev/null
+++ b/third_party/python/yamllint/yamllint/rules/new_lines.py
@@ -0,0 +1,46 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2016 Adrien Vergé
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+"""
+Use this rule to force the type of new line characters.
+
+.. rubric:: Options
+
+* Set ``type`` to ``unix`` to use UNIX-typed new line characters (``\\n``), or
+  ``dos`` to use DOS-typed new line characters (``\\r\\n``).
+"""
+
+
+from yamllint.linter import LintProblem
+
+
+ID = 'new-lines'
+TYPE = 'line'
+CONF = {'type': ('unix', 'dos')}
+DEFAULT = {'type': 'unix'}
+
+
+def check(conf, line):
+    if line.start == 0 and len(line.buffer) > line.end:
+        if conf['type'] == 'dos':
+            if (line.end + 2 > len(line.buffer) or
+                    line.buffer[line.end:line.end + 2] != '\r\n'):
+                yield LintProblem(1, line.end - line.start + 1,
+                                  'wrong new line character: expected \\r\\n')
+        else:
+            if line.buffer[line.end] == '\r':
+                yield LintProblem(1, line.end - line.start + 1,
+                                  'wrong new line character: expected \\n')