Add config parser functionality

Signed-off-by: Václav Valíček <valicek1994@gmail.com>

repo_cloner/lib/cloner_config.py

@@ -1,4 +1,10 @@
+import os
+
 from repo_cloner.lib.default_cloner_config import DefaultClonerConfig
+from repo_cloner.lib.config_file_not_found_error import ConfigFileNotFoundError
+import logging
+
+l = logging.getLogger("rc.cfg")
 
 
 class ClonerConfig(DefaultClonerConfig):
@@ -37,6 +43,79 @@ class ClonerConfig(DefaultClonerConfig):
 	def _set_property(self, key: str, value):
 		if not self.has_property(key):
 			raise KeyError(f"{key} is not recognized config option")
-		if not isinstance(value, type(self.__getattribute__(key))):
-			raise ValueError(f"Invalid value for key {key}: type is {type(value)}")
+
+		requested_type = type(self.__getattribute__(key));
+		if not isinstance(value, requested_type):
+			l.debug(f"Trying conversion of {key} from {type(value)} to {requested_type}")
+			try:
+				if requested_type == bool:
+					value = True if value == "1" else False
+				else:
+					value = requested_type(value)
+				l.debug(f"Conversion result: {type(value)}: {value}")
+			except Exception as e:
+				l.critical(f"Conversion failed! ({str(e)}")
+				raise ValueError(
+					f"Invalid value for key {key}: type is {type(value)} instead of {requested_type}, conversion failed")
 		self.__values[key] = value
+
+
+class ClonerConfigParser:
+	__file: str = ""
+	__invalid_lines: list = []
+
+	def __init__(self, config_file: str):
+		self.__file = config_file
+		self.__config = ClonerConfig()
+		self.__invalid_lines = []
+		l.info(f"Parsing cloner config file: {self.__file}")
+
+		if not os.path.exists(self.__file):
+			l.critical(f"Config file: {self.__file} does not exist!")
+			raise ConfigFileNotFoundError(self.__file)
+
+		# parse config file
+		raw_lines = []
+		with open(self.__file, "r") as f:
+			raw_lines = f.readlines()
+		l.debug(f"Readen {len(raw_lines)} lines")
+		lines = []
+
+		# strip lines, remove comments
+		line: str = ""
+		for line in raw_lines:
+			if not line.startswith('#'):
+				line = line.strip()
+				# empty line? skip
+				if len(line) > 0:
+					lines.append(line)
+		l.debug(f"Found {len(lines)} config lines")
+
+		for line in lines:
+			if not "=" in line:
+				l.warning(f"Line '{line}' has invalid format!")
+				self.__invalid_lines.append((line, None))
+				continue
+			eq = line.find("=")
+			key: str = line[0:eq]
+			val: str = line[eq + 1:]
+			l.debug(f"Found config pair: {key} => '{val}'")
+
+			try:
+				self.__config._set_property(key, val)
+			except BaseException as e:
+				self.__invalid_lines.append((key, val))
+				l.critical(str(e))
+
+	@property
+	def config(self) -> ClonerConfig:
+		return self.__config
+
+	@property
+	def invalid(self) -> bool:
+		return len(self.__invalid_lines) > 0
+
+	@property
+	def invalid_lines(self):
+		return self.__invalid_lines
+

repo_cloner/lib/repo_dir_structure.py

@@ -1,6 +1,7 @@
 import os.path
 from repo_cloner.lib.dir_not_found_error import DirNotFoundError
 from repo_cloner.lib.config_file_not_found_error import ConfigFileNotFoundError
+from repo_cloner.lib.cloner_config import ClonerConfig, ClonerConfigParser
 
 
 class RepoDirStructure():
@@ -8,12 +9,14 @@ class RepoDirStructure():
 	_conf_dir: str = ""
 	_cache_dir: str = ""
 	_repos_dir: str = ""
+	_config = None
 
 	def __init__(self, base_dir: str):
 		self._base_dir = base_dir
 		self._conf_dir = os.path.join(self._base_dir, "config")
 		self._cache_dir = os.path.join(self._base_dir, "cache")
 		self._repos_dir = os.path.join(self._base_dir, "repos")
+		self._config = None
 
 	@property
 	def __config_filename(self) -> str:
@@ -75,3 +78,15 @@ class RepoDirStructure():
 		if not os.path.exists(self.__config_filename):
 			raise ConfigFileNotFoundError(self.__config_filename)
 		return True
+
+	@property
+	def config_file(self):
+		return self.__config_filename
+
+	@property
+	def config(self) -> ClonerConfig:
+		self.has_config
+		if not self._config:
+			parser = ClonerConfigParser(self.__config_filename)
+			self._config = parser.config
+		return self._config