[PATCH 06/15] bitbake: lib/bb/msg.py: Add filter utilities

[Joshua Watt <jpewhacker@gmail.com>]

Adds generic filter utilities that can be used to filter when the log
level is greater than or equal to a defined value, or below a defined
value, as well as a generic function to translate a string to a logging
level (or bitbake logging level)

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
---
 bitbake/lib/bb/msg.py | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/bitbake/lib/bb/msg.py b/bitbake/lib/bb/msg.py
index c70fd80806..8561826a6e 100644
--- a/bitbake/lib/bb/msg.py
+++ b/bitbake/lib/bb/msg.py
@@ -135,6 +135,28 @@ class BBLogFilterStdOut(BBLogFilter):
             return True
         return False
 
+class LogFilterGEQLevel(logging.Filter):
+    def __init__(self, level):
+        self.strlevel = str(level)
+        self.level = stringToLevel(level)
+
+    def __repr__(self):
+        return "%s level >= %s (%d)" % (self.__class__.__name__, self.strlevel, self.level)
+
+    def filter(self, record):
+        return (record.levelno >= self.level)
+
+class LogFilterLTLevel(logging.Filter):
+    def __init__(self, level):
+        self.strlevel = str(level)
+        self.level = stringToLevel(level)
+
+    def __repr__(self):
+        return "%s level < %s (%d)" % (self.__class__.__name__, self.strlevel, self.level)
+
+    def filter(self, record):
+        return (record.levelno < self.level)
+
 # Message control functions
 #
 
@@ -175,6 +197,19 @@ def addDefaultlogFilter(handler, cls = BBLogFilter, forcelevel=None):
 
     cls(handler, level, debug_domains)
 
+def stringToLevel(level):
+    try:
+        return int(level)
+    except ValueError:
+        pass
+
+    try:
+        return getattr(logging, level)
+    except AttributeError:
+        pass
+
+    return getattr(BBLogFormatter, level)
+
 #
 # Message handling functions
 #
-- 
2.17.1