Clean up help screen, get rid of util.py (#1027)

* More refactoring of cli.py

break up code from cli.py (now in jrnl.py) up into smaller functions
get rid of export mode
move --encrypt and --decrypt to commands.py
clean up the help screen even more
update flag name for import

* reorganize code, move around lots of functions

* clean up import statements

* move run function out of cli and into jrnl

* rename confusingly named function

* move editor function into editor file

* rename parse_args.py to args.py to make room for more args functions

* Fix error in test suite for windows

I accidentally flipped the conditional, so this fixes it.

Co-authored-by: Micah Jerome Ellison <micah.jerome.ellison@gmail.com>

* Update app description on help screen

Co-authored-by: Micah Jerome Ellison <micah.jerome.ellison@gmail.com>

jrnl/config.py

@@ -0,0 +1,88 @@
+import logging
+import sys
+
+import colorama
+import yaml
+
+from .color import ERROR_COLOR
+from .color import RESET_COLOR
+from .output import list_journals
+
+
+def scope_config(config, journal_name):
+    if journal_name not in config["journals"]:
+        return config
+    config = config.copy()
+    journal_conf = config["journals"].get(journal_name)
+    if type(journal_conf) is dict:
+        # We can override the default config on a by-journal basis
+        logging.debug(
+            "Updating configuration with specific journal overrides %s", journal_conf
+        )
+        config.update(journal_conf)
+    else:
+        # But also just give them a string to point to the journal file
+        config["journal"] = journal_conf
+    return config
+
+
+def verify_config_colors(config):
+    """
+    Ensures the keys set for colors are valid colorama.Fore attributes, or "None"
+    :return: True if all keys are set correctly, False otherwise
+    """
+    all_valid_colors = True
+    for key, color in config["colors"].items():
+        upper_color = color.upper()
+        if upper_color == "NONE":
+            continue
+        if not getattr(colorama.Fore, upper_color, None):
+            print(
+                "[{2}ERROR{3}: {0} set to invalid color: {1}]".format(
+                    key, color, ERROR_COLOR, RESET_COLOR
+                ),
+                file=sys.stderr,
+            )
+            all_valid_colors = False
+    return all_valid_colors
+
+
+def load_config(config_path):
+    """Tries to load a config file from YAML."""
+    with open(config_path) as f:
+        return yaml.load(f, Loader=yaml.FullLoader)
+
+
+def is_config_json(config_path):
+    with open(config_path, "r", encoding="utf-8") as f:
+        config_file = f.read()
+    return config_file.strip().startswith("{")
+
+
+def update_config(config, new_config, scope, force_local=False):
+    """Updates a config dict with new values - either global if scope is None
+    or config['journals'][scope] is just a string pointing to a journal file,
+    or within the scope"""
+    if scope and type(config["journals"][scope]) is dict:  # Update to journal specific
+        config["journals"][scope].update(new_config)
+    elif scope and force_local:  # Convert to dict
+        config["journals"][scope] = {"journal": config["journals"][scope]}
+        config["journals"][scope].update(new_config)
+    else:
+        config.update(new_config)
+
+
+def get_journal_name(args, config):
+    from . import install
+
+    args.journal_name = install.DEFAULT_JOURNAL_KEY
+    if args.text and args.text[0] in config["journals"]:
+        args.journal_name = args.text[0]
+        args.text = args.text[1:]
+    elif install.DEFAULT_JOURNAL_KEY not in config["journals"]:
+        print("No default journal configured.", file=sys.stderr)
+        print(list_journals(config), file=sys.stderr)
+        sys.exit(1)
+
+    logging.debug("Using journal name: %s", args.journal_name)
+    return args