1 files changed, 122 insertions, 0 deletions
diff --git a/examples/summaries/cocoa/Logger.py b/examples/summaries/cocoa/Logger.py
new file mode 100644
index 000000000000..91d503c31210
--- /dev/null
+++ b/examples/summaries/cocoa/Logger.py
@@ -0,0 +1,122 @@
+from __future__ import print_function
+import sys
+import os.path
+import inspect
+
+class NopLogger:
+	def __init__(self):
+		pass
+
+	def write(self,data):
+		pass
+
+	def flush(self):
+		pass
+
+	def close(self):
+		pass
+
+
+class StdoutLogger:
+	def __init__(self):
+		pass
+
+	def write(self,data):
+		print(data)
+
+	def flush(self):
+		pass
+
+	def close(self):
+		pass
+
+class FileLogger:
+	def __init__(self, name):
+		self.file = None
+		try:
+			name = os.path.abspath(name)
+			self.file = open(name,'a')
+		except:
+			try:
+				self.file = open('formatters.log','a')
+			except:
+				pass
+
+	def write(self,data):
+		if self.file != None:
+			print(data,file=self.file)
+		else:
+			print(data)
+
+	def flush(self):
+		if self.file != None:
+			self.file.flush()
+
+	def close(self):
+		if self.file != None:
+			self.file.close()
+			self.file = None
+
+# to enable logging:
+# define lldb.formatters.Logger._lldb_formatters_debug_level to any number greater than 0
+# if you define it to any value greater than 1, the log will be automatically flushed after each write (slower but should make sure most of the stuff makes it to the log even if we crash)
+# if you define it to any value greater than 2, the calling function's details will automatically be logged (even slower, but provides additional details)
+# if you need the log to go to a file instead of on screen, define lldb.formatters.Logger._lldb_formatters_debug_filename to a valid filename
+class Logger:
+	def __init__(self,autoflush=False,logcaller=False):
+		global _lldb_formatters_debug_level
+		global _lldb_formatters_debug_filename
+		self.autoflush = autoflush
+		want_log = False
+		try:
+			want_log = (_lldb_formatters_debug_level > 0)
+		except:
+			pass
+		if not (want_log):
+			self.impl = NopLogger()
+			return
+		want_file = False
+		try:
+			want_file = (_lldb_formatters_debug_filename != None and _lldb_formatters_debug_filename != '' and _lldb_formatters_debug_filename != 0)
+		except:
+			pass
+		if want_file:
+			self.impl = FileLogger(_lldb_formatters_debug_filename)
+		else:
+			self.impl = StdoutLogger()
+		try:
+			self.autoflush = (_lldb_formatters_debug_level > 1)
+		except:
+			self.autoflush = autoflush
+		want_caller_info = False
+		try:
+			want_caller_info = (_lldb_formatters_debug_level > 2)
+		except:
+			pass
+		if want_caller_info:
+			self._log_caller()
+
+	def _log_caller(self):
+		caller = inspect.stack()[2]
+		try:
+			if caller != None and len(caller) > 3:
+				self.write('Logging from function ' + str(caller))
+			else:
+				self.write('Caller info not available - Required caller logging not possible')
+		finally:
+			del caller # needed per Python docs to avoid keeping objects alive longer than we care
+
+	def write(self,data):
+		self.impl.write(data)
+		if self.autoflush:
+			self.flush()
+
+	def __rshift__(self,data):
+		self.write(data)
+
+	def flush(self):
+		self.impl.flush()
+
+	def close(self):
+		self.impl.close()
+