Add argparse.ArgumentParser based CliArguments class

This wrapper lives in a seperate module and class so that possible
processing of arguments can be done before the config dictionary
gets passed to the compiler.

srdl2sv/cli/cli.py

@@ -0,0 +1,63 @@
+import argparse
+import os
+from itertools import chain
+
+class CliArguments():
+    def __init__(self):
+        self.parser = argparse.ArgumentParser(
+            description="SystemRDL 2 SystemVerilog compiler")
+
+        self.parser.add_argument(
+            "-v",
+            "--verbosity",
+            action="count",
+            help="Increase output verbosity.")
+
+        self.parser.add_argument(
+            "-q",
+            "--quiet",
+            action="store_true")
+
+        self.parser.add_argument(
+            "-o",
+            "--out_dir",
+            type=str,
+            help="Define output directory to dump files.\
+                  If directory is non-existent, it will be created.")
+
+        self.parser.add_argument(
+            "-d",
+            "--search_paths",
+            type=str,
+            nargs="+",
+            help="Point to one (or more) directories that will\
+                  be searched for RDL files.")
+
+        self.parser.add_argument(
+            "-r",
+            "--recursive_search",
+            action="store_true",
+            help="If set, the dependency directories will be\
+                  searched recursively.");
+
+        self.parser.add_argument(
+            "IN_RDL",
+            type=str,
+            nargs="+",
+            help="Location of RDL file(s) with root addrmap.")
+
+    def get_config(self) -> dict():
+        args = self.parser.parse_args()
+
+        config = dict()
+
+        config['input_file'] = args.IN_RDL
+        config['verbosity'] = args.verbosity
+        config['quiet'] = args.quiet
+
+        if args.recursive_search:
+            config['search_paths'] = [x[0] for y in args.search_paths for x in os.walk(y)]
+        else:
+            config['search_paths'] = args.search_paths
+
+        return config

srdl2sv/main.py

@@ -1,27 +1,31 @@
 #!/usr/bin/env python3
 
+# Standard modules
 import sys
-import os
-import re
 import time
 
-from systemrdl import RDLCompiler, RDLCompileError, RDLWalker, RDLListener, node
-from systemrdl.node import FieldNode
+# Imported modules
+from systemrdl import RDLCompiler, RDLCompileError
 
+# Local modules
 from components.addrmap import AddrMap
-
+from cli.cli import CliArguments
 
 if __name__ == "__main__":
     # Take start timestamp
     start = time.time()
 
+    # Construct command line arguments
+    cli_arguments = CliArguments()
+    config = cli_arguments.get_config()
+
     # Compile and elaborate files provided from the command line
-    input_files = sys.argv[1:]
     rdlc = RDLCompiler()
 
     try:
-        for input_file in input_files:
-            rdlc.compile_file(input_file)
+        for input_file in config['input_file']:
+            rdlc.compile_file(
+                input_file, incl_search_paths=config['search_paths'])
 
         root = rdlc.elaborate()
     except RDLCompileError: