Add --config option for explicitly stating configuration file to use.

aliparlakci/bulk-downloader-for-reddit#122

Address comments in pull review.

* Removed vertical space.
* Added config file existence check with log message.

README.md

@@ -181,6 +181,14 @@ Takes a file directory as a parameter and skips the posts if it matches with the
 
 Example usage: **`--downloaded-posts D:\bdfr\ALL_POSTS.txt`**
 
+## **`--config`**
+Specify a `config.json` file to use. This will disable reading from the default `Bulk downloader for reddit/config.json` file, as well as `--use-local-config` option.
+
+Example usage: **`--config /etc/bdfr/config.json`**
+Example usage: **`-c ~/config.json`**
+Example usage: **`--config c:\Users\Me\Downloads\config.json`**
+Example usage: **`-c c:\config.json`**
+
 ## ❔ FAQ
 
 ### I am running the script on a headless machine or on a remote server. How can I authenticate my reddit account?

script.py

@@ -256,10 +256,20 @@ def printLogo():
     )
 
 def main():
+    arguments = Arguments.parse()
+    GLOBAL.arguments = arguments
 
+    if arguments.config:
+        if arguments.use_local_config:
+            sys.exit()
+        if Path(arguments.config).exists():
+            GLOBAL.configDirectory = Path(arguments.config)
+        else:
+            VanillaPrint("custom config",arguments.config,"not found. Exiting.")
+            sys.exit()
+    else:
         if not Path(GLOBAL.defaultConfigDirectory).is_dir():
             os.makedirs(GLOBAL.defaultConfigDirectory)
-
         if Path("config.json").exists():
             GLOBAL.configDirectory = Path("config.json")
         else:
@@ -274,9 +284,6 @@ def main():
 
     sys.argv = sys.argv + GLOBAL.config["options"].split()
 
-    arguments = Arguments.parse()
-    GLOBAL.arguments = arguments
-
     if arguments.set_filename:
         Config(GLOBAL.configDirectory).setCustomFileName()
         sys.exit()

src/arguments.py

@@ -154,6 +154,12 @@ class Arguments:
                             help="Just saved posts into a the POSTS.json file without downloading"
                             )
 
+        parser.add_argument("--config","-c",
+                            help="Specify exact config.json file to use. " \
+                            "Disables reading from 'Bulk downloader for " \
+                            "reddit/config.json' and --use-local-config " \
+                            "option."
+                            )
 
         if arguments == []:
             return parser.parse_args()