1 files changed, 44 insertions, 0 deletions
diff --git a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/preprocessor/PreProcessorLoader.java b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/preprocessor/PreProcessorLoader.java
new file mode 100644
index 00000000..91218c82
--- /dev/null
+++ b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/preprocessor/PreProcessorLoader.java
@@ -0,0 +1,44 @@
+package at.gv.egiz.pdfas.lib.impl.preprocessor;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+import java.util.ServiceLoader;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import at.gv.egiz.pdfas.lib.api.Configuration;
+import at.gv.egiz.pdfas.lib.api.preprocessor.PreProcessor;
+
+public class PreProcessorLoader {
+
+	private static final Logger logger = LoggerFactory
+			.getLogger(PreProcessorLoader.class);
+	
+	private static ServiceLoader<PreProcessor> preProcessorLoader = ServiceLoader.load(PreProcessor.class);
+	
+	public static List<PreProcessor> getPreProcessors(Configuration configuration) {
+		logger.debug("building PreProcessors");
+		
+		List<PreProcessor> processors = new ArrayList<PreProcessor>();
+		Iterator<PreProcessor> processorIterator = preProcessorLoader.iterator();
+		
+		while(processorIterator.hasNext()) {
+			PreProcessor preProcessor = processorIterator.next();
+			logger.debug("Loading " + preProcessor.getName() + " [" + preProcessor.getClass().getName() + "]");
+			preProcessor.initialize(configuration);
+			logger.debug("Initialized " + preProcessor.getName());
+			processors.add(preProcessor);
+			logger.debug("Preprocessor added " + preProcessor.getName());
+		}
+		
+		logger.debug("PreProcessors constructed");
+		
+		Collections.sort(processors, new PreProcessorCompare());
+		
+		logger.debug("PreProcessors sorted");
+		return processors;
+	}
+}