/* ###
 * IP: GHIDRA
 * REVIEWED: YES
 *
 * 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.
 */
//Clears any functions that are not xref'd
//@category Symbol

import ghidra.app.script.GhidraScript;
import ghidra.program.model.listing.Function;
import ghidra.program.model.listing.FunctionIterator;

public class ClearOrphanFunctions extends GhidraScript {

	@Override
	public void run() throws Exception {
		FunctionIterator funcIter = currentProgram.getListing().getFunctions(true);
		while (funcIter.hasNext()) {
			Function func = funcIter.next();
			if (currentProgram.getReferenceManager().getReferenceCountTo(func.getEntryPoint()) == 0) {
				println("Function " + func.getName() + " at " + func.getEntryPoint().toString() +
					" is not called");
				currentProgram.getFunctionManager().removeFunction(func.getEntryPoint());
				setEOLComment(func.getEntryPoint(), "Function Removed by ClearOrphanFunctions.java");
			}
		}
	}

}