Add configparser

redirector/conf/config.ini

+[DEFAULT]
+nginx_dir = /etc/nginx
+maps_dir = $(nginx_dir)s/maps
+config_dir = $(nginx_dir)s/location_includes
+

redirector/conf/config.py

+import configparser
+import argparse as ap
+
+class Config:
+    def __init__(self):
+        self.config = configparser.ConfigParser()
+        self.filename = 'config.ini'
+
+    def read_config(self, filename='config.ini'):
+        self.filename = filename
+        self.config.read(self.filename)
+
+    def get_default_dir(self, dir_key):
+        default_dir = self.config['DEFAULT'][dir_key]
+
+        return default_dir
+
+    def rewrite_default_dir(self, dir_key, new_val):
+        self.config['DEFAULT'][dir_key] = new_val
+
+        f = open(self.filename, 'w')
+        self.config.write(f)
+        f.close()
+
+    def show_config(self):
+        f = open(self.filename, 'r')
+        print(f.read())
+        f.close()
+
+
+def main():
+    parser = ap.ArgumentParser(description='Redirector configure utility')
+    parser.add_argument('--show', help='Show current config file content.', action='store_true')
+    parser.add_argument('--edit', action='store', nargs=2, help='Edit one of params. \n Usage: redirector-config --edit NGINX_DIR /etc/nginx2')
+
+    args = parser.parse_args()
+
+    config = Config()
+    config.read_config()
+
+    if args.show:
+        config.show_config()
+
+    if args.edit:
+        config.rewrite_default_dir(args.edit[0], args.edit[1])
+
+
+if __name__ == "__main__":
+    main()
+