--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/scripts/release/log.py	Fri Mar 13 18:14:54 2009 +0000
@@ -0,0 +1,78 @@
+# Copyright 2009 the Melange authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Logging facilities.
+
+The public interface is basically an initialization function for the
+underlying Python logging module. Logging always goes to the console,
+and can optionally be configured to write to a transcript file, which
+will store exactly what appears on screen (minus colors).
+"""
+
+__authors__ = [
+    # alphabetical order by last name, please
+    '"David Anderson" <dave@natulte.net>',
+    ]
+
+import logging
+
+import util
+
+
+class _ColorizingFormatter(logging.Formatter):
+  """A logging formatter that colorizes based on log levels."""
+
+  def format(self, record):
+    msg = logging.Formatter.format(self, record)
+
+    if record.levelno >= logging.WARNING:
+      return util.colorize(msg, util.RED, bold=True)
+    elif record.levelno == logging.INFO:
+      return util.colorize(msg, util.GREEN)
+    else:
+      return msg
+
+
+class _DecolorizingFormatter(logging.Formatter):
+  """A logging formatter that strips color."""
+
+  def format(self, record):
+    return util.decolorize(logging.Formatter.format(self, record))
+
+
+def init(logfile=None):
+  """Initialize the logging subsystem.
+
+  Args:
+    logfile: The filename for the transcript file, if any.
+  """
+
+  root = logging.getLogger('')
+  root.setLevel(logging.DEBUG)
+
+  console = logging.StreamHandler()
+  console.setLevel(logging.DEBUG)
+  console.setFormatter(_ColorizingFormatter())
+  root.addHandler(console)
+
+  if logfile:
+    transcript = logging.FileHandler(logfile, 'w')
+    transcript.setLevel(logging.DEBUG)
+    transcript.setFormatter(_DecolorizingFormatter())
+    root.addHandler(transcript)
+
+
+debug = logging.debug
+info = logging.info
+error = logging.error