- over.core.misc.console now accepts globals as well as locals to offer a complete environment

- new over.core.file.count_lines
- over.core.types.ndict can now export keys with dashes in them same way over.core.app.Main does it (by translating them to underscores)

core/file.py

@@ -85,3 +85,19 @@ def touch(fname, times=None):
 	
 	with open(fname, 'a'):
 		os.utime(fname, times)
+
+# --------------------------------------------------
+
+def count_lines(filename):
+	'''
+	A reasonably fast and memory-lean line counter.
+	'''
+	
+	lines = 0
+	buffer = bytearray(2048)
+	
+	with open(filename, 'rb') as f:
+		while f.readinto(buffer):
+				lines += buffer.count(b'\n')
+	
+	return lines