Add project files.

env/Lib/site-packages/gunicorn/app/base.py

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+#
+# This file is part of gunicorn released under the MIT license.
+# See the NOTICE for more information.
+import importlib.util
+import importlib.machinery
+import os
+import sys
+import traceback
+
+from gunicorn import util
+from gunicorn.arbiter import Arbiter
+from gunicorn.config import Config, get_default_config_file
+from gunicorn import debug
+
+
+class BaseApplication:
+    """
+    An application interface for configuring and loading
+    the various necessities for any given web framework.
+    """
+    def __init__(self, usage=None, prog=None):
+        self.usage = usage
+        self.cfg = None
+        self.callable = None
+        self.prog = prog
+        self.logger = None
+        self.do_load_config()
+
+    def do_load_config(self):
+        """
+        Loads the configuration
+        """
+        try:
+            self.load_default_config()
+            self.load_config()
+        except Exception as e:
+            print("\nError: %s" % str(e), file=sys.stderr)
+            sys.stderr.flush()
+            sys.exit(1)
+
+    def load_default_config(self):
+        # init configuration
+        self.cfg = Config(self.usage, prog=self.prog)
+
+    def init(self, parser, opts, args):
+        raise NotImplementedError
+
+    def load(self):
+        raise NotImplementedError
+
+    def load_config(self):
+        """
+        This method is used to load the configuration from one or several input(s).
+        Custom Command line, configuration file.
+        You have to override this method in your class.
+        """
+        raise NotImplementedError
+
+    def reload(self):
+        self.do_load_config()
+        if self.cfg.spew:
+            debug.spew()
+
+    def wsgi(self):
+        if self.callable is None:
+            self.callable = self.load()
+        return self.callable
+
+    def run(self):
+        try:
+            Arbiter(self).run()
+        except RuntimeError as e:
+            print("\nError: %s\n" % e, file=sys.stderr)
+            sys.stderr.flush()
+            sys.exit(1)
+
+
+class Application(BaseApplication):
+
+    # 'init' and 'load' methods are implemented by WSGIApplication.
+    # pylint: disable=abstract-method
+
+    def chdir(self):
+        # chdir to the configured path before loading,
+        # default is the current dir
+        os.chdir(self.cfg.chdir)
+
+        # add the path to sys.path
+        if self.cfg.chdir not in sys.path:
+            sys.path.insert(0, self.cfg.chdir)
+
+    def get_config_from_filename(self, filename):
+
+        if not os.path.exists(filename):
+            raise RuntimeError("%r doesn't exist" % filename)
+
+        ext = os.path.splitext(filename)[1]
+
+        try:
+            module_name = '__config__'
+            if ext in [".py", ".pyc"]:
+                spec = importlib.util.spec_from_file_location(module_name, filename)
+            else:
+                msg = "configuration file should have a valid Python extension.\n"
+                util.warn(msg)
+                loader_ = importlib.machinery.SourceFileLoader(module_name, filename)
+                spec = importlib.util.spec_from_file_location(module_name, filename, loader=loader_)
+            mod = importlib.util.module_from_spec(spec)
+            sys.modules[module_name] = mod
+            spec.loader.exec_module(mod)
+        except Exception:
+            print("Failed to read config file: %s" % filename, file=sys.stderr)
+            traceback.print_exc()
+            sys.stderr.flush()
+            sys.exit(1)
+
+        return vars(mod)
+
+    def get_config_from_module_name(self, module_name):
+        return vars(importlib.import_module(module_name))
+
+    def load_config_from_module_name_or_filename(self, location):
+        """
+        Loads the configuration file: the file is a python file, otherwise raise an RuntimeError
+        Exception or stop the process if the configuration file contains a syntax error.
+        """
+
+        if location.startswith("python:"):
+            module_name = location[len("python:"):]
+            cfg = self.get_config_from_module_name(module_name)
+        else:
+            if location.startswith("file:"):
+                filename = location[len("file:"):]
+            else:
+                filename = location
+            cfg = self.get_config_from_filename(filename)
+
+        for k, v in cfg.items():
+            # Ignore unknown names
+            if k not in self.cfg.settings:
+                continue
+            try:
+                self.cfg.set(k.lower(), v)
+            except Exception:
+                print("Invalid value for %s: %s\n" % (k, v), file=sys.stderr)
+                sys.stderr.flush()
+                raise
+
+        return cfg
+
+    def load_config_from_file(self, filename):
+        return self.load_config_from_module_name_or_filename(location=filename)
+
+    def load_config(self):
+        # parse console args
+        parser = self.cfg.parser()
+        args = parser.parse_args()
+
+        # optional settings from apps
+        cfg = self.init(parser, args, args.args)
+
+        # set up import paths and follow symlinks
+        self.chdir()
+
+        # Load up the any app specific configuration
+        if cfg:
+            for k, v in cfg.items():
+                self.cfg.set(k.lower(), v)
+
+        env_args = parser.parse_args(self.cfg.get_cmd_args_from_env())
+
+        if args.config:
+            self.load_config_from_file(args.config)
+        elif env_args.config:
+            self.load_config_from_file(env_args.config)
+        else:
+            default_config = get_default_config_file()
+            if default_config is not None:
+                self.load_config_from_file(default_config)
+
+        # Load up environment configuration
+        for k, v in vars(env_args).items():
+            if v is None:
+                continue
+            if k == "args":
+                continue
+            self.cfg.set(k.lower(), v)
+
+        # Lastly, update the configuration with any command line settings.
+        for k, v in vars(args).items():
+            if v is None:
+                continue
+            if k == "args":
+                continue
+            self.cfg.set(k.lower(), v)
+
+        # current directory might be changed by the config now
+        # set up import paths and follow symlinks
+        self.chdir()
+
+    def run(self):
+        if self.cfg.print_config:
+            print(self.cfg)
+
+        if self.cfg.print_config or self.cfg.check_config:
+            try:
+                self.load()
+            except Exception:
+                msg = "\nError while loading the application:\n"
+                print(msg, file=sys.stderr)
+                traceback.print_exc()
+                sys.stderr.flush()
+                sys.exit(1)
+            sys.exit(0)
+
+        if self.cfg.spew:
+            debug.spew()
+
+        if self.cfg.daemon:
+            if os.environ.get('NOTIFY_SOCKET'):
+                msg = "Warning: you shouldn't specify `daemon = True`" \
+                      " when launching by systemd with `Type = notify`"
+                print(msg, file=sys.stderr, flush=True)
+
+            util.daemonize(self.cfg.enable_stdio_inheritance)
+
+        # set python paths
+        if self.cfg.pythonpath:
+            paths = self.cfg.pythonpath.split(",")
+            for path in paths:
+                pythonpath = os.path.abspath(path)
+                if pythonpath not in sys.path:
+                    sys.path.insert(0, pythonpath)
+
+        super().run()