Regenerate cli-arguments.md from the actual usage of 0.13

docs/user-guide/convert_arguments_to_doc.py

@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+
+# Copyright 2018 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+Convert the output of `nginx-ingress-controller --help` to
+a Markdown table.
+"""
+
+import re
+import sys
+
+assert sys.version_info[0] == 3, 'This script requires Python 3'
+
+data = sys.stdin.read()
+data = data.replace('\t', ' ' * 8)  # Expand tabs
+data = data.replace('\n' + (' ' * 8 * 2), ' ')  # Unwrap lines
+
+print('''
+| Argument | Description |
+|----------|-------------|
+'''.rstrip())
+
+for arg_m in re.finditer('^\s+(-.+?)\s{2,}(.+)$', data, flags=re.MULTILINE):
+	arg, description = arg_m.groups()
+	print('| `{arg}` | {description} |'.format(
+		arg=arg.replace(', ', '`, `'),
+		description=description,
+	))