1 files changed, 53 insertions, 0 deletions
diff --git a/mwlib/log.py b/mwlib/log.py
new file mode 100755
index 0000000..9afef8f
--- /dev/null
+++ b/mwlib/log.py
@@ -0,0 +1,53 @@
+#! /usr/bin/env python
+
+# Copyright (c) 2007-2008 PediaPress GmbH
+# See README.txt for additional licensing information.
+
+import sys
+
+class Stdout(object):
+    """late-bound sys.stdout"""
+    def write(self, msg):
+        sys.stdout.write(msg)
+
+    def flush(self):
+        sys.stdout.flush()
+
+class Stderr(object):
+    """late-bound sys.stderr"""
+    def write(self, msg):
+        sys.stderr.write(msg)
+
+    def flush(self):
+        sys.stderr.flush()
+
+class Log(object):
+    logfile = Stderr()
+    
+    def __init__(self, prefix=None):
+        if prefix is None:
+            self._prefix = []
+        else:
+            if isinstance(prefix, basestring):
+                self._prefix = [prefix]
+            else:
+                self._prefix = prefix
+
+    def __getattr__(self, name):
+        return Log([self, name])
+
+    def __nonzero__(self):
+        return bool(self._prefix)
+    
+    def __str__(self):
+        return ".".join(str(x) for x in self._prefix if x)
+                 
+    def __call__(self, msg, *args):
+        if not self.logfile:
+            return
+
+        if args:
+            msg = " ".join(([msg] + [repr(x) for x in args]))
+
+        s = "%s >> %s\n" % (".".join(str(x) for x in self._prefix if x), msg)
+        self.logfile.write(s)