list parsing

2 files changed, 29 insertions, 1 deletions

diff --git a/examples/read_conf.py b/examples/read_conf.py
index 2c547eb..936157e 100644
--- a/examples/read_conf.py
+++ b/examples/read_conf.py
@@ -9,6 +9,6 @@ import pom_parser
 try:
 	filename = 'examples/conf.pom' if len(sys.argv) < 2 else sys.argv[1]
 	conf = pom_parser.load_path(filename)
-	print(conf.get_float('tab-size',17))
+	print(conf.get_list('file-extensions.C',['a']))
 except pom_parser.Error as e:
 	print('Parse error:', str(e), sep = '\n')
diff --git a/pom_parser/__init__.py b/pom_parser/__init__.py
index 29bf843..c179158 100644
--- a/pom_parser/__init__.py
+++ b/pom_parser/__init__.py
@@ -92,6 +92,26 @@ class Item:
 			return False
 		return None
 
+	def _parse_list(self) -> list[str]:
+		chars = iter(self.value)
+		list_ = []
+		entry: list[str] = []
+		while (c := next(chars, '')):
+			if c == ',':
+				list_.append(''.join(entry).strip(' \t'))
+				entry = []
+			elif c == '\\':
+				c = next(chars, '')
+				if c not in ',\\':
+					entry.append('\\')
+				entry.append(c)
+			else:
+				entry.append(c)
+		last_entry = ''.join(entry).strip(' \t')
+		if last_entry:
+			list_.append(last_entry)
+		return list_
+
 class Configuration:
 	_items: dict[str, Item]
 	def __repr__(self) -> str:
@@ -156,6 +176,14 @@ class Configuration:
 			raise item._error(f'Value {repr(item.value)} for {item.key} is invalid (want on/off/yes/no/true/false)')
 		return boolv
 
+	def get_list(self, key: str, default: Optional[list[str]] = None) -> Optional[list[str]]:
+		item = self._items.get(key)
+		if item is None:
+			return None if default is None else default
+		item.read = True
+		return item._parse_list()
+
+
 	def items(self) -> Iterable[Item]:
 		import copy
 		return map(copy.copy, self._items.values())