--- /dev/null
+"use strict";
+var log4js = require('../log4js');
+
+function categoryFilter (excludes, appender) {
+ if (typeof(excludes) === 'string') excludes = [excludes];
+ return function(logEvent) {
+ if (excludes.indexOf(logEvent.categoryName) === -1) {
+ appender(logEvent);
+ }
+ };
+}
+
+function configure(config) {
+ log4js.loadAppender(config.appender.type);
+ var appender = log4js.appenderMakers[config.appender.type](config.appender);
+ return categoryFilter(config.exclude, appender);
+}
+
+exports.appender = categoryFilter;
+exports.configure = configure;