From 91c977fd9aee0a873da2571ced5e3657252aed58 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Adam=20S=C5=82oczy=C5=84ski?=
 <adam.sloczynski.mail@gmail.com>
Date: Tue, 2 Apr 2019 18:41:28 +0200
Subject: [PATCH] configfiles: Add NginxBear

This bear verifies syntax of nginx configuration files.

Closes https://github.com/coala/coala-bears/issues/1638
---
 bears/configfiles/NginxBear.py     | 40 ++++++++++++++++++++++++++++++
 tests/configfiles/NginxBearTest.py | 35 ++++++++++++++++++++++++++
 2 files changed, 75 insertions(+)
 create mode 100644 bears/configfiles/NginxBear.py
 create mode 100644 tests/configfiles/NginxBearTest.py

diff --git a/bears/configfiles/NginxBear.py b/bears/configfiles/NginxBear.py
new file mode 100644
index 0000000000..c88b2bc760
--- /dev/null
+++ b/bears/configfiles/NginxBear.py
@@ -0,0 +1,40 @@
+from coalib.bearlib.abstractions.Linter import linter
+from dependency_management.requirements.DistributionRequirement \
+    import DistributionRequirement
+from coalib.results.RESULT_SEVERITY import RESULT_SEVERITY
+
+
+@linter(executable='nginx',
+        output_format='regex',
+        output_regex=r'\[(?P<severity>.+)\](?P<message>.+)'
+                     r':(?P<line>\d+)',
+        severity_map={'emerg': RESULT_SEVERITY.MAJOR,
+                      'alert': RESULT_SEVERITY.MAJOR,
+                      'warn': RESULT_SEVERITY.NORMAL},
+        use_stderr=True)
+class NginxBear:
+    """
+    Checks syntax of nginx configuration files using `nginx -tc` command.
+    """
+
+    LANGUAGES = {'nginx'}
+    REQUIREMENTS = {
+        DistributionRequirement(
+            apt_get='nginx',
+            brew='nginx',
+            dnf='nginx',
+            portage=None,
+            xbps='nginx',
+            yum='nginx',
+            zypper='nginx',
+        ),
+    }
+    AUTHORS = {'The coala developers'}
+    AUTHORS_EMAILS = {'coala-devel@googlegroups.com'}
+    LICENSE = 'AGPL-3.0'
+    CAN_DETECT = {'Syntax'}
+    SEE_MORE = 'https://nginx.com'
+
+    @staticmethod
+    def create_arguments(filename, file, config_file):
+        return ('-tc', filename)
diff --git a/tests/configfiles/NginxBearTest.py b/tests/configfiles/NginxBearTest.py
new file mode 100644
index 0000000000..2b2c78a882
--- /dev/null
+++ b/tests/configfiles/NginxBearTest.py
@@ -0,0 +1,35 @@
+from bears.configfiles.NginxBear import NginxBear
+from coalib.testing.LocalBearTestHelper import verify_local_bear
+
+good_file = """
+http{
+    server {
+        listen 80;
+
+        server_name example.com www.example.com;
+
+        root /usr/local/www/example.com;
+
+        access_log /var/log/nginx/example.access.log;
+        error_log /var/log/nginx/example.error.log;
+    }
+}
+"""
+
+bad_file = """
+http{
+    server {
+        listen 80;
+
+        server_name example.com www.example.com;
+
+        root /usr/local/www/example.com;
+
+        access_log /var/log/nginx/example.access.log;
+        error_log /var/log/nginx/example.error.log;
+    }
+"""
+
+NginxBearTest = verify_local_bear(NginxBear,
+                                  valid_files=(good_file, ),
+                                  invalid_files=(bad_file, ))