diff --git a/gixy/cli/main.py b/gixy/cli/main.py
index ecef89c..5561f18 100644
--- a/gixy/cli/main.py
+++ b/gixy/cli/main.py
@@ -98,7 +98,7 @@ def main():
     _init_logger(args.debug)
 
     path = os.path.expanduser(args.nginx_file)
-    if not os.path.isfile(path):
+    if path != '-' and not os.path.exists(path):
         sys.stderr.write('Please specify path to Nginx configuration.\n\n')
         parser.print_help()
         sys.exit(1)
@@ -150,7 +150,13 @@ def main():
         config.set_for(name, options)
 
     with Gixy(config=config) as yoda:
-        yoda.audit(path)
+        if path == '-':
+            with os.fdopen(sys.stdin.fileno(), mode='r') as fdata:
+                yoda.audit('<stdin>', fdata, is_stdin=True)
+        else:
+            with open(path, mode='r') as fdata:
+                yoda.audit(path, fdata, is_stdin=False)
+
         formatted = formatters()[config.output_format]().format(yoda)
         if args.output_file:
             with open(config.output_file, 'w') as f:
diff --git a/gixy/core/manager.py b/gixy/core/manager.py
index 2017469..1147382 100644
--- a/gixy/core/manager.py
+++ b/gixy/core/manager.py
@@ -1,25 +1,32 @@
+import os
+import logging
+
 import gixy
 from gixy.core.plugins_manager import PluginsManager
 from gixy.core.context import get_context, pop_context, push_context, purge_context
 from gixy.parser.nginx_parser import NginxParser
 from gixy.core.config import Config
 
+LOG = logging.getLogger(__name__)
+
 
 class Manager(object):
     def __init__(self, config=None):
         self.root = None
-        self.parser = None
-        self.auditor = None
         self.config = config or Config()
+        self.auditor = PluginsManager(config=self.config)
         self.stats = {gixy.severity.UNSPECIFIED: 0,
                       gixy.severity.LOW: 0,
                       gixy.severity.MEDIUM: 0,
                       gixy.severity.HIGH: 0}
 
-    def audit(self, file_path):
-        self.auditor = PluginsManager(config=self.config)
-        self.parser = NginxParser(file_path, allow_includes=self.config.allow_includes)
-        self.root = self.parser.parse(file_path)
+    def audit(self, file_path, file_data, is_stdin=False):
+        LOG.debug("Audit config file: {fname}".format(fname=file_path))
+        parser = NginxParser(
+            cwd=os.path.dirname(file_path) if not is_stdin else '',
+            allow_includes=self.config.allow_includes)
+        self.root = parser.parse(content=file_data.read(), path_info=file_path)
+
         push_context(self.root)
         self._audit_recursive(self.root.children)
 
diff --git a/gixy/parser/nginx_parser.py b/gixy/parser/nginx_parser.py
index 7a30c26..ec9506b 100644
--- a/gixy/parser/nginx_parser.py
+++ b/gixy/parser/nginx_parser.py
@@ -12,26 +12,32 @@ LOG = logging.getLogger(__name__)
 
 
 class NginxParser(object):
-    def __init__(self, file_path, allow_includes=True):
-        self.base_file_path = file_path
-        self.cwd = os.path.dirname(file_path)
+    def __init__(self, cwd='', allow_includes=True):
+        self.cwd = cwd
         self.configs = {}
         self.is_dump = False
         self.allow_includes = allow_includes
         self.directives = {}
+        self.parser = raw_parser.RawParser()
         self._init_directives()
 
-    def parse(self, file_path, root=None):
-        LOG.debug("Parse file: {}".format(file_path))
+    def parse_file(self, path, root=None):
+        LOG.debug("Parse file: {}".format(path))
+        content = open(path).read()
+        return self.parse(content=content, root=root, path_info=path)
 
+    def parse(self, content, root=None, path_info=None):
         if not root:
             root = block.Root()
 
         try:
-            parser = raw_parser.RawParser()
-            parsed = parser.parse(file_path)
+            parsed = self.parser.parse(content)
         except ParseException as e:
-            LOG.error('Failed to parse config "{file}": {error}'.format(file=file_path, error=str(e)))
+            error_msg = 'char {char} (line:{line}, col:{col})'.format(char=e.loc, line=e.lineno, col=e.col)
+            if path_info:
+                LOG.error('Failed to parse config "{file}": {error}'.format(file=path_info, error=error_msg))
+            else:
+                LOG.error('Failed to parse config: {error}'.format(error=error_msg))
             return root
 
         if len(parsed) and parsed[0].getName() == 'file_delimiter':
@@ -108,7 +114,7 @@ class NginxParser(object):
         for file_path in glob.iglob(path):
             include = block.IncludeBlock('include', [file_path])
             parent.append(include)
-            self.parse(file_path, include)
+            self.parse_file(file_path, include)
 
         if not file_path:
             LOG.warning("File not found: {}".format(path))
diff --git a/gixy/parser/raw_parser.py b/gixy/parser/raw_parser.py
index e2fdd59..84aa18e 100644
--- a/gixy/parser/raw_parser.py
+++ b/gixy/parser/raw_parser.py
@@ -25,17 +25,15 @@ class RawParser(object):
     """
 
     def __init__(self):
-        self._script = None
+        self._if_fixer = re.compile(r'(if\s.+)\)\)(\s*\{)?$', flags=re.MULTILINE)
 
-    def parse(self, file_path):
+    def parse(self, data):
         """
         Returns the parsed tree.
         """
         # Temporary, dirty hack :(
-        content = open(file_path).read()
-        content = re.sub(r'(if\s.+)\)\)(\s*\{)?$', '\\1) )\\2', content, flags=re.MULTILINE)
+        content = self._if_fixer.sub('\\1) )\\2', data)
         return self.script.parseString(content, parseAll=True)
-        # return self.script.parseFile(file_path, parseAll=True)
 
     @cached_property
     def script(self):
diff --git a/tests/directives/test_block.py b/tests/directives/test_block.py
index 5ac7ae0..cd56e4c 100644
--- a/tests/directives/test_block.py
+++ b/tests/directives/test_block.py
@@ -1,17 +1,13 @@
 from nose.tools import assert_equals, assert_is_instance, assert_is_not_none, assert_is_none, assert_true, assert_false
-import mock
-from six import StringIO
-from six.moves import builtins
 from gixy.parser.nginx_parser import NginxParser
 from gixy.directives.block import *
 
 # TODO(buglloc): what about include block?
 
+
 def _get_parsed(config):
-    with mock.patch('%s.open' % builtins.__name__) as mock_open:
-        mock_open.return_value = StringIO(config)
-        root = NginxParser('/foo/bar', allow_includes=False).parse('/foo/bar')
-        return root.children[0]
+    root = NginxParser(cwd='', allow_includes=False).parse(config)
+    return root.children[0]
 
 
 def test_block():
diff --git a/tests/directives/test_directive.py b/tests/directives/test_directive.py
index e846e2d..612c3f9 100644
--- a/tests/directives/test_directive.py
+++ b/tests/directives/test_directive.py
@@ -1,15 +1,11 @@
 from nose.tools import assert_equals, assert_is_instance, assert_false, assert_true
-import mock
-from six import StringIO
-from six.moves import builtins
 from gixy.parser.nginx_parser import NginxParser
 from gixy.directives.directive import *
 
 
 def _get_parsed(config):
-    with mock.patch('%s.open' % builtins.__name__) as mock_open:
-        mock_open.return_value = StringIO(config)
-        return NginxParser('/foo/bar', allow_includes=False).parse('/foo/bar').children[0]
+    root = NginxParser(cwd='', allow_includes=False).parse(config)
+    return root.children[0]
 
 
 def test_directive():
diff --git a/tests/parser/test_nginx_parser.py b/tests/parser/test_nginx_parser.py
index 2609df2..782f702 100644
--- a/tests/parser/test_nginx_parser.py
+++ b/tests/parser/test_nginx_parser.py
@@ -1,16 +1,11 @@
 from nose.tools import assert_is_instance, assert_equal
-import mock
-from six import StringIO
-from six.moves import builtins
 from gixy.parser.nginx_parser import NginxParser
 from gixy.directives.directive import *
 from gixy.directives.block import *
 
 
 def _parse(config):
-    with mock.patch('%s.open' % builtins.__name__) as mock_open:
-        mock_open.return_value = StringIO(config)
-        return NginxParser('/foo/bar', allow_includes=False).parse('/foo/bar')
+    return NginxParser(cwd='', allow_includes=False).parse(config)
 
 
 def test_directive():
diff --git a/tests/parser/test_raw_parser.py b/tests/parser/test_raw_parser.py
index e4d55f7..ddbbc6c 100644
--- a/tests/parser/test_raw_parser.py
+++ b/tests/parser/test_raw_parser.py
@@ -493,7 +493,5 @@ add_header X-Blank-Comment blank;
 
 
 def assert_config(config, expected):
-    with mock.patch('%s.open' % builtins.__name__) as mock_open:
-        mock_open.return_value = StringIO(config)
-        actual = RawParser().parse('/foo/bar')
-        assert_equals(actual.asList(), expected)
+    actual = RawParser().parse(config)
+    assert_equals(actual.asList(), expected)
diff --git a/tests/plugins/test_simply.py b/tests/plugins/test_simply.py
index e93fb65..6de1c5c 100644
--- a/tests/plugins/test_simply.py
+++ b/tests/plugins/test_simply.py
@@ -81,7 +81,7 @@ def yoda_provider(plugin, plugin_options=None):
 def check_configuration(plugin, config_path, test_config):
     plugin_options = parse_plugin_options(config_path)
     with yoda_provider(plugin, plugin_options) as yoda:
-        yoda.audit(config_path)
+        yoda.audit(config_path, open(config_path, mode='r'))
         results = RawFormatter().format(yoda)
 
         assert_equals(len(results), 1, 'Should have one report')
@@ -102,7 +102,7 @@ def check_configuration(plugin, config_path, test_config):
 
 def check_configuration_fp(plugin, config_path, test_config):
     with yoda_provider(plugin) as yoda:
-        yoda.audit(config_path)
+        yoda.audit(config_path, open(config_path, mode='r'))
         results = RawFormatter().format(yoda)
 
         assert_equals(len(results), 0,