restructuring

util/parser.py

@@ -0,0 +1,31 @@
+import argparse
+
+
+def create_parser():
+    # Create the top-level parser
+    parser = argparse.ArgumentParser(description="Time tracker.")
+    subparsers = parser.add_subparsers(dest="command", help="Sub-command help")
+
+    # Create the parser for the "ls" command
+    _ = subparsers.add_parser("ls", help="List all events.")
+
+    # Create the parser for the "ps" command
+    _ = subparsers.add_parser("ps", help="Show the currently running event.")
+
+    # Create the parser for the "add" command
+    parser_add = subparsers.add_parser("add", help="Adding a new event.")
+    parser_add.add_argument("name", help="Name of the event")
+    parser_add.add_argument("-s", "--start", help="Start datetime (default now)")
+    parser_add.add_argument("-e", "--end", help="End datetime")
+
+    # Create the parser for the "start" command
+    parser_start = subparsers.add_parser("start", help="Starting a new event.")
+    parser_start.add_argument("name", help="Name of the event")
+    parser_start.add_argument("-s", "--start", help="Start datetime (default now)")
+
+    # Create the parser for the "end" command
+    parser_end = subparsers.add_parser("end", help="Ending the current event.")
+    parser_end.add_argument("-e", "--end", help="End datetime")
+
+    return parser
+